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UNDERGROUND TANK-C-4/8/96
/ F[[oE ._'ON T ~ N'F.% Fac t I i ty , ~]Permit to Ope/ate I /~)/~ Date [-]Construction Permit t Date ~Pe;mit to abandonl Ho. of Tanks , , Date ~ended Pe;mit Conditfons :~Pe;mit Appttcation Form, ' ~ Tank ~A~ptlcatio. to Abando~ 'ranks(s) Date ~Copy og H~ttten' Contract a~tueen Owner '& ~Xnl~ect ton ~Co;rel~ndence -Recetved ~Corres~ndence - Nailed " ~. Date ~Unautho~t~ Re[eels Repo~tl ~bandonment/C[oauce 'Repoct. ' ' ' ~6ampling/Lab Re.rte ' ' ' ~NV~ C~pZtanee Check (Hew COns[r~ctton Checklist) ..... ~S?D C~p[tanoe Check (Neu Construction Check[tst) ~NV~ ~[an Cheek (Hew Construction) ~87D Plan Check (Hew Construction) ~NV~ Plan Cheek (txtsttn9 ~8~ P~an Cheek (Bxt=tt~ Facility) ~ ~"[ncomple~e Application. form ~Pe;mit Appitca=lon Check,tat ~Permtt Instructions ~Discarded G~i0ht S ....... nell Tel~ Relu[t ._ Date Da te ~Hontto;t~ Heir Constructt"on' ~Bnvt;o~enta[. Senat[[vtty Data= B Groundwate; Drilling, Bo;lng Logs Location of Hater Hells ~Statement o~ Underground Conduits ~Plot Plan ~eatutin9 All Environmentally Sensitive Data ~PhoCos ~Construction Drawings Location: 'e~dtiOn~ ~Hal~ sheet shoutn~ date received and tally of tnsp ~t scel laneous 1700 Flower Street KERN COUNTY HEALTH DEPARTM iT: HEALTH OFFICER Bakersfield, California 93305 Leon M Hebertson, M.D. ENVIRONMENTAL HEALTH DIVISION Telephone (805) 861-3636 . - DIRECTOR OF ENVIRONMENTAL HEALTH Vernon S. Relchard I.NTERIM PERMIT '- ~"~/~,~ PERMIT~el 500400 TO OPERATE: ISSUED: MARCH 1, 1987 EXPI RES: MARCH 1, 1990 UNDERGROUND HAZARDOUS SUBSTANCES ..... STORAGE FACILITY ' - ' NUMBER OF TANKS~-'4- FAC ILITY: I OWNER: CHET' S SERVICE I NEILSEN, HANS 231 ~EAST 18TH STREET $ 3463 FICHE LANE BAKERSFIELD, CA ~ .~ -. BAKERSFIELD, CA 93304 TANK # AGE(IN YRS} sUBSTANCE CODE PRESSURIZED PIPING? 1-3 UNK MVF 3 ,-' UNK _ · 4 UNK ' "- ~ NOTIN use --:'-'"UNK : NOTE: ALL INTERIM REQUIREMENTS ESTABLISHED BY THE PERMITTING AUTHORITY MUST BE MET DURING THE TERM OF THIS PERMIT NON--TRANSFERABLE * * * POST ON PREMISES :' ' DATE PEI~.ilT CHECK LIST RETURNED: ~.. · ': , '.,-: ..... .~ Pe rmi t ,/~--~ Kern County Health Departmen~ Division o[ Enviro~ental He~ Application .1700 Flo~r Street, Bakersfield, ~ 93305 ~PLI~TION FOR PE~IT' ~ opE~TE ~E~R~ ~~S SUBST~CES S~E FACILI~ T~ of Application (ch~k): ~New Facility ~ification of Facility ~isti~ Facility ~ansfer of ~ership A. ~ergen~ 24-~ur Contact (n~e, area c~e, ~one): ~-C'~ .~.J_~-~¢/~ Facility ~ C~ ,I 3~V ~ ~. of T~ks , ~ .... ~ of B~ineSs (check).J' ~Iine S~t'fon ~er (de~ri~) Is Tank(s) ~cat~ on ~ Agricultural Fa~? ~Y~ Is Tank(s) Us~ Pri~rily for ~ricultural ~r~ses? ~Yes Facility ~dre~ ~/ ~ /,f~-. ~.~. Nearest T R SEC (R~al ~atio~ ~ly) O~rator ~]~s~ C? ~{~ ~ Con,ct ~r~ c~z c~ ~ ~,,e,~ .... ~dr'ess-.--~. {/--~ ~ :~ ~-,~ , ,' ZiP ~/yj-3f '~' . Telex,. B. ~r ~ Facility Provid~ by ~/~ , ~p~ ~il ~aracteristics at ~cility ~sis for Soil ~ a~ Gro~ter ~p~ '~teminatio~ . C. Contractor A/ ~ ~ntractor's ~ce~e ~dre~ Zip Pro~s~ S~rti~ ~te P~o~s~ C~eti~ ~rker's C~~ti~ Certificati~ ~ I~urer D. If ~is ~it Is For ~ification Of ~ ~isti~ ~cility, Briefly ~ri~ ~ifi~ti~ E. Tank(s) Store (~eck all ~t a~ly): Tank ~ ~ste Pr~uct ~tor Vehicle Unlead~ R~ula~ Pr~i~ Die~I ~ste · ank ~ Cheez ~o¢~ (n~c~¢c~aZ ~e~ ~ ~ (t~ ~) ~caZ G. Transfer of Ownership Dste of ~-ansfer /</,//2 Previous Owner Previous Facility Name I, accept {':~1~¥ all obligations ~ '~ermi~ N~. issued to · I understand that the Permittin~ Authority may re~iew and modi'fy or terminate the transfer of the Permit to Operate this ~dergro~a~d storage facility upon receiving this c~mpleted This form has been c~mpleted under penalty of perjury and to the best of my k~owledge is true and correct. / .. ?-;:/,,' ...... .-. ./ / Signature ...,~". /~,~ ,' ,,_' ,. ..F' :,:-.,, :d. ,'-'>'-~ .' ..,_ Title (,/D/i~,~ ':6 ,<' Date >//',.'"",?y' TANK ~ (FILL OUT SEPARATE FORM JH TANK) FOR EACH SECTION, CHECK ALL APPROPRIATE BOXES H. 1. Tank is: Iq Vaul ted ~Non-Vaul ted [~Double-Wal 1 I-]Single-Wall 2. ~ Material ~'~Carbon Steel [] stainless Steel [-]Polyvinyl Chloride []Fiberglass-Clad Steel [] Fiberglass-Reinforced Plastic [] Concrete [~ Alumin~ [] Bronze []Unknown [] Other (describe) 3. Primary Containment Dste Installed 'Thickness (Inches) Capacity (Gallons) Manufacturer -- 4. Tank Secondary Contairm%ent " [-~Double-Wall ~Synthetic Liner []Lined Vault []None ~]Other (describe): Manufacturer: [2]Material ThiCkness (Inches) Capacity (Gals.) 5. Tank Interior ~inin~ ---~Rubber []Alkyd []Epoxy []Phenolic []Glass []Clay ~Unlined []unknown [~Other (describe): 6. Tank Corrosion Protection .... -~Galvanized ~assi~Clad []Pol~thylene Wrap '[]Vinyl Wrappin~ []Tar or Asphalt ~unknown []None []Other (describe): Cathodic Protection: '[]None [~Impressed Current System ~lSacrtfiCial A~ode System.' Describe System & Equipment: 7. Leak Detection, Monito. rin~, and Interception a. Tank: [~Visual (vaulted tanks only) [-~Groundwater Manitorirg' Wall(s) [-~Vadose Zone Monitorin~ Wall(s) [~U-Tube Without Liner [~U-Tube with Ccmpatible Liner Directir~ Flow to Monitorirg Well(s)* [] Vapor Dstector* [] Liquid Level Sensor' [] Co~ductivit~ Sensor*' [-] Pressure Sensor in Annular Space of Double Wall Tank- ~ Liquid Retrieval & Inspection Fr~m U-Tube, Monitoring Well or Annular S~ace [-]Daily Gauging & Inventory Reconciliation []Periodic Tightnmss Testing [-[ None .~ Unknow~ ~'~ Other b. Piping: Flow-Restricting Leak Detector(s) for Pressurized Pipit' ~Monitoring S~p with Race~y []Sealed Concrete Race~y ~Half-Cut Cnmpatible Pi.,pe ,Ra~e~ay []Synthetic Liner Race~ay I-I Unknown [] Other /~./ *Describe Make & Model': ' 8. Ti hmess sted? 1::3 es []No Date of Last ?ighl:ness Test Results bf ?est Test Name Testing ¢c~pany 9. Tan__.~k Tank Repaired? r-lYes []No ~.Llnkno~a~ Date(s) of Repair(s) Describe Repairs 10. Overfill Protection ~Operator Fills, Controls, & Visually Monitors [~vel []Tape Float Gau~e []Float Vent Valves [] Auto Shut- Off Controls Capacitance Sensor []Sealed Fill Box [~None [~Unkno~ Other: List Make & MOdel For Above ~u,~;ices a. Underground Piping: []Yes []No ~Unknown Material Thickness (inches) Diameter ' Manufacturer []Pressure []Suction []Gravity Approximate Length 0f 'Pipe b. Underground Piping Corrosion Protection : .... []Galvanized -[]Fiberglass-Clad "[]Impressed Current' ~ [~Sacriffcial~'-An~dm [']Polyethylene Wrap []Electrical Isolation [~Vinyl Wrap [-]Tar or Asphalt ~Unknown ~ [~None ~Other (describe): c. Underground Piping, Secondary Containment: []Double-Wall' []Synthetic Liner System []None ~Unkno~ [-]Other (describe): TANK ~ ~ (FILL OUT SEP~TE FO~ ~ .H T~K) - ~ ~ SEnIOr, CHECK ~ ~PROPRIATE ~XES H. 1. Tank is: ~Vaulted ~n-Vault~ ~uble-Wali ~Si~le~all 2. ~ Material ~Car~n Stol ~s~inless Steel ~l~inyl C~oride ~Fi~rglass~l~ Stol ~Fi~rglass-Reinforc~ Plastic ~Concrete ~ ~in~ ~Bronze ~ Other (de~ri~) 3. Priory Contai~nt ~te Ins~ll~ ~ic~ess (Inches) Ca,city (~llons) ~nufacturer 4. Tan~ ~condary Contai~nt ~ Other (descr i~): ~ufacturer: ~terial ~ic~ess (Inc~s) ~city (~ls.) 5. Tank Interior Li'ni~ ~Other (de~ri~): 6. Tank Corrosion Protection ~Tar or ~p~lt ~~ ~No~ ~Other (de~ri~): Cath~ic Protection:~ ~ne ~pr~s~ ~rent S~t~ ~br'i'ficial ~e ~t~ ~ri~ Syst~ & Equi~ent: 7. Leak Detection, ~nitori~, and Intercep%ion a. Ta~: ~Vis~l (vault~ ~ only) ~Gro~ter ~itori~' ~Vadose Zone ~itori~ ~ll(s) ~U~ Wi~ut ~ner ~ Va~r ~t~tor* ~Li~id ~vel ~n~r' ~ Cond~tivit~ ~ Pressure Se~r in ~ular S~ce of ~le Wall ~ Liquid ~tri~al & Ins~ction Fr~ U-T~, ~nitori~ ~11 or ~ar ~ily Ga~i~ & I~entory Reconciliation ~ri~ic Tigh~e~ T~ti~ b. Pipit: Fl~Restricti~ ~ak ~t~tor(s) for Pre~uriz~ Pipi~w 8. ~te of ~st Tightne~ Test Results of ~ Test ~e ~sti~ C~ny 9. T~k ~ ~t.(s) of ~ir(s) 10. ~erfill Protection ........ ~rator FillS, Controls, & Visually Monitors ~vel ~Ta~ Fl~t ~e ~Fl~t Vent.Valves .~Auto Shut- Off Thlckne~ (i~hes) D~eter ~nufacturer b. Undergro~ .Pipi~ Corrosion Prot~tion : c. Undergro~ Pipit, Seco~ary Contai~nt: ~Other (de~ri~): TANK ~ (FILL OUT HEPARATE FORM ,H TANK) FOR EACH SECTION, CHECK ALL APPROPRIATE BOXES H. 1. Tank is: [-]Vaulted ~Non-Vaul ted [Double'-Wal 1 []Single-Wall 2. Tank Material Carbon Steel [] stainless Steel [~P~lyvinyl Chloride [~Fiberglass-Clad Steel Fiberglass-Reinforced Plastic [] Concrete [] Aluminum [] Bronze [-]Unk~own [] Other (describe) 3. Primary Containment Date Installed Thickness (Inches) Capacity (Gallons) Manufacturer 4. Tank Secondary Containment -- ~ ......... ' ..... "' [']Double-Wall ' ~lSynthetic 'Liner []Lined Vault []None ~ltklknown [~Other (describe): Manufacturer: ~lMaterial Thickness (Inches) Capacity (Gals.) 5. Tank Interior Linin~ ---~.Rubber [']Alkyd []Epoxy []~henolic [Glass []Clay ~Unlined []II, known [Other (describe): 6. Tank Corrosion Protection .... ---~Galvanized ~ass-Clad [2]Polyethylene wrap DVinyl-wrappil,] [']Tar or Asphalt ~Unknown []None []Other (describe): Cathodic Protection:~ [None []Impressed Current System ['lSacrific'ial 9~ode System ~--~rib~ System & Equipment: 7. Leak Detection, Monitoring, and Interception a. Tank: ~Visual (vaulted tanks only) . [-]Groundwater Monitoril~' Wall(s) [VadOse Zone Monitoring Well(s) [-]U-Tube Without Liner ~[_]U-Tube with Ccmpatible Liner Directing Flow to Monitoring Well(s)* Vapor Detector* [] Liquid Level Sensort [ Conductivit~ Sensor* [] Pressure Sensor in Annular Space of Double Wall Tank- [] Liquid Bstrieval & Inspection Frnm U-Tube, Monitoring Well or Annular Space []Daily Gauging & Inventory Reconciliation ['1Periodic Tightness Testing r~ None' ~ Unkno~m [2] Other b. Piping: Flow-Restricting Leak Detector(s) for Pressurized Piping' [] Monitoring S~p with Race~y [] Sealed Concrete Raceway [ Half-Cut Cumpatible Pipe Raceway. [ Synthetic Liner Raceway []None : [ Unknown [] Other /~/½ *Describe Make & Model: 8. ~en Tightness Tested? []Yes []No Date of Last Tightness Test Results of Test Test Name Testing Company 9. Tank Re~ Tank Repai red? ~'~ Yes ~No ~]Unknown Da te (s) of Repa ir (s) Describe Repairs 10. Overfill Protection '~Operator Fills, Controls, & Visually Monitors Level []-]Tape Float Gauge []Float Vent Valves [] Auto Shut- Off Controls Capaci~ance Sensor []Sealed Fill Box [']None []Unknown Other: List Make & Model Fo~ Abo~e Devices a. Underground Piping: []Yes ~No ~Unknown Material Thickness (inches) Diamete~ Manufacturer []Pressure [~Suc(ion ' [~Gravity Approximate Length of 'Pipe b. Underground Piping CorrOsion Protection : ~ [-]Galvanized []Fiberglass-Clad [Impressed Current []Sacrificial~--An~de ~Polyethylene Wrap [-]Electrical Isolation ~Vinyl Wrap []Tar or Asphalt ~Unknown []None []Other (describe): c. Underground Piping, Secondary Containment: ' []Double-Wall ~Synthetic Liner System [-]None ~T]Unknown []Other (describe): /~,' <~'~-~ T~K ~ (FILL OIIT , EPARATE F~ ~ T~K) //~/ O J t- ----'~'R-~CH SE~ION, CHECK ~L ~PROPRIATE oOXES H. 1. Tank is: ~ Vaul ted ~n-Vaul t~ ~Uble-Wal 1 ~Si~le~al 1 2. Tank Mater ~Car~n Steel ~Stainless Steel ~l~inyl C~oride ~Fi~rglass~l~ Steel ~Fi~rglass-Reinforc~ Plastic ~Concrete ~in~ ~Bronze ~-~k~ ~Other (de~ri~) 3. Priory Contai~nt ~te Installed ~i.c~ess (Inches) Ca.city (~llons)' ~nufacturer 4. Tank Secondary Co6tai~ent ~l~Wall ~ ~thetic Liner ~Lin~ Vault ~ne ~o~ ~Other (descri~): ~nufacturer: ~terial Thic~ess (Inches) Ca.city (Gals.) 5. Tank Interior Lini~ ~~r ~kyd ~Z~xy ~enolic ~Glass ~Clay ~ltn~ ~o~ ~Other (de~ri~): 6. Tank Corrosion Protection ~G~lvaniz~ ~F~g]%ss-Cl~ ~l~thyle~ ~ap ~Vinyi ~a~i~ - ~Tar or ~p~lt ~k~ ~No~ ~Other (de~ri~): Cath~ic Protection:~ ~ne ~pres~ ~rrent S~t~ ~crificfal ~e ~t~ ~ri~ Syst~ & Egui~ent: 7. Leak Detection, ~nitori~, and Interception a. Tank: ~Vis~l (vault~ tanks only) ~Gro~ter ~nitori~ ~ll(s) ~Vadose Zone ~nitori~ ~ll(s) ~U~ Wi~ut ~ner U-~ wi~ C~tible Liner Dir~ti~ Flow to ~nitori~ ~ll(s)* Va~r ~t~tor* ~Li~id ~vel ~n~r ~Cond~tivit~ ~ Pressure Sen~r in ~ular S~ce of ~uble Wall Tank- ~ Liquid ~tri~al & Ins~ction Fr~ U-T~, Monito~i~ ~11 or ~ar ~ ~ily Ga~i~ & I~entory Reconciliation ~ri~ic Tigh~e~ Testi~ ~None ~o~ ~her b. Pipit: ~ Fl~Restricti~ ~ak ~tector (s) for Pre,uti ~nitori~ S~p with ~ce~y ~ ~al~ C~crete ~ce~y ~lf-Cut C~tible Pi~ ~ceway ~S~t~tic Liner ~y ~N~e ~Unkno~ ~er *~ri~ ~ke & ~el: 8. ~en Tigh~ess ~st~? ~Yes ~ ~kno~ ~te of ~st Tightne~ Test Results of Test Test ~e ~sti~ C~ny 9. Tank ~ ' ~te(s) of ~ir(s) ~ri~ Re. irs 10. ~erf]ll Protection ~rator Filis, Controls, & Visually Monitors ~vel ~Ta~ Fl~t Ga~e ~Fl~t Vent Valves ~Auto Shut- Off Controls citance ~r ~al~ Fill ~x ~ne ~o~' Other: List ~ & ~el F~ ~e ~ices 11. Pipi~ a. ~dergro~d Pipi~: ~Yes ~ ~]~o~ ~terial Thickne~ (l~hes) Di~eter Manufacturer ~essure ~S~tion ~Gravity ~pr oxi~te b. Undergro~ Pipi~ Corrosion Proration : ~lvaniz~ ~Fi~rglass~l~ ~ess~ ~rrent ~crificial ~e ~Polye~yle~ Wrap ~Electrical Isolati~ ~Vinyl Wrap ~Tar or ~lt ~Unkno~ ~None ~her (de~ri~): c. Undergro~ Pipit, Seco~ary Contat~ent: ~le-Wall ~S~thetic. Liner Syst~ ~ne ~kno~ ~Other (de~ri~): PERMIT CHECKLIST .This checklist is provided to ensure that all necessary packet enclosures.were received and that the Permittee has obtained all necessary equipment to implement the first phase of monitoring requirements. Please complete this form and return to .KCHD in the self-addressed envelope provided within 30 days of receipt. Check: Yes A. The packet I received contained: 1) Cover Letter, Permit Checklist, Interim Permit, Phase I Interim Permit Monitoring Requirements, Information' 'Sheet (Agreement Between owner 'and Operator ), Chapter 15 (KCOC ~G-3941 ), Explanation of Substance Codes, Equipment Lists and Return Envelope. 2) Standard Inventory Control Monitoring Handbook ~UT-IO. 3) The Following Forms: a) Inventory Recording Sheet b) Inventory Reconciliation Sheet with summary on reverse c) Trend Analysis Worksheet 4) An Action Chart (to post at facility) B. I have examined the information on my Interim Permit, · Phase I Monitoring Requirements, and Information Sheet (Agreement between Owner and Operator), and find owner's name and address, facility name and address, operator's name and address, substance codes, and number of tanks to be accurately listed (if "no" is checked, note appropriate corrections on the back side of this sheet). C. I have the following required equipment (as described on page 6 of Handbook): 1) Acceptable gauging instrument 2) "Striker. plate(s)" in tank(s) 3) Water-finding paste /~. I have read the information on the enclosed "Information Sheet" pertaining to Agreements between Owner and Operator and hereby state that the owner of this foaw~ielritaYndiospetrhaeto°rp~rat~:~f~'>n°''' ~///'is checked, attach a copy of agreement between E' I have enclosed a copy of Calibratio~ Charts for ail tanks at this facility (if tanks are identical, one chart ~ill sUffice; label chart(s) with corresponding. // tank numbers listed on permit}. F. As required on page 6 of Handbook #UT-lC, all meters at this facility have had calibration checks within the last 30 days and were calibrated by a registered device repairman _if out of tolerance (all. meter calibrations must be recorded on "Meter Calibration Check Form" found in the Appendix of Handbook). G. Standard Inventory Control Monitoring was started at this facility in accordance with procedures describe~ in, Handbook #UT-10. Date Star~!ed BINDING CONTRACT BETWEEN CHET CANDELARIA AND HANCE NIELSEN I, Hance Nielsen, owner of underground storage tanks located at 231 East 18th Street Bakersfield, California have entered into this written contract with Chet Candelaria, the operator of same, to fulfill a requirement ...... ,q-,,o'/-C"~ ....................... ' .... " of my permit to operate, # /~ . I have provided the operator with a copy of the Permit to Operate and Chapter 15 of the Ordinance. I, Chet C~ndelaria, operator of underground storage tanks located at 231 East 18th Street Bakersfield, California have received from Hance Nielsen, owner of same, a copy of Permit to Operate # /~r? J~-['~J and Chapter 15 of the Ordinance describing fines and penalties for non-compliance. I have read and understand my responsibilities under this Permit and agree to do the following: 1. moni%or the underground tanks as specified in the Permit to Operate 2. maintain appropriate records as required by the permit to Operate 3. implement all reporting procedures as required by the Permit to Operate 4. properly close the undergroUnd tanks as required by the Permit'to Operate. n . r..~../Operator ~/'//~////~,~,, 7 DATE ~'///~-f~/~,-~f'~/ 7 DATE McCART~ TA~ f, STEEL COMPANY $$0 Gallons STREET ~o 0 BOX 1807 n~~*~ CALFIOR~A 93503 UNDERGROUND U.L, TANK CAPACITY CHART / ~ TAk~ SiZE 45 1/.2" D~A, X 80" SHELL Depth cf Capacity Depth of Capacity 'i:;uid.- In In Liquid In in i~ches Gallom~ Snch~s · 2" 9 25" ~" !$ 26" ~6 4" 2 ~. 27" 35 2 5" ~4 28" 368 ~." 4a 2g" 383 7" 55 S0" 39 7 ~:" 67 31" 413 ___ ~': 81 32" :' .~" IG~ 34" , 45 7 II" . . ii9 35" 470 15" 165 38" 509 -~. 1~" ! 7g 3g" S 20 '~" Z'9i~ 41" 19" 2=~ ~" 4 2" SS 1 ~ '" 240 43" 560 22" 272 45" 57! 7.~" 287 45 1/Z" 573 , /~,~,ARTHY TANK & STEEl. CO, ,30X ~68 3030 M ST. · BAK,.2RSFIELO, CALIFORNIA - 93302 FA i rview 4-6718 12/5/63 .~ ~ CAPACITY OF MC CARTHY UNDF. RGROUN~ TANKS Dep:h 2000 3000 4000 Dep:h 2000 3000 /~000 Inches G'al. Gal. Ga!. Inches Gal. Gal, Gal, !" $ 8 10 38" I034 1544 2014 ~' i 5. 22 29 39" 1068 ·. ! 596 2081 3'~ - 27 41 4" 42 62 8t 4~" 1138 1700 2216 5" · "58 87 113 42" 1173 1750 2281 6" '75 114 148 43" t206 1802 2349 7" 96 1~.~3 186 44" I242 1854 2418 8" 1 i 7 174 22.6 45" 1276 1904 2483 9" 138 206 269 46" 1309 1955 2549 10" ! (~2,~ 24 ! 3 t 4 47" 1341 2002 2610 l I" 186 277 360 48" 1377 2056 2679 /12" 210 3t4 469 49~' 1410 2105 2745 · 13" 236 352 .45? 50" ,~4,~.2 "215b, 2807 14" 263 39! 5t0 5!i, .. '~",",'.,,-~/,, 2201 '2869 15II 2~ ~'32 564 · 52'' '1508 2250 2934 16'' · 318 47~'~ 618 $3'' 1530 2299 2996 I 7'' ~6 516 673 5~+'' 1571 2~44 3056 18'' 376 ~61 732 55"' t60~ 239! 3116 19'' ~,07 607 79! 56`~ i633 2/~38 3~77 20'' 436 65'0 847 57'' J663 2482 3236 21'' 467 696 907 58'' 1692 2525 3292 22'' 498 742- 968 59'' 1723 2570 3350 23'' 530 790 1030 60'' 175~ 2612 3406 24'~ ~C62 838 I092 61'' 1777 2652 3458 I ~ 62'' 1810 270~ 3521 25'' 595 887 26:~ 627 935 i219 02~ 1831 2731 356I 27'' 661 955 1284 64'' 1856 ~Z769 36 I 0 25'' 694 !035 1349 65'' !~81 2806 3658 2~'' 727 1084 1414 66'' 1900 2837 3697 30'' 762 1~35 1479 67'' 1927 2875 3747 31''' 795 1]85 1547 68" 1948 2906 3788 32'~,~ 830~ ~2~ 69" ~ .,5 i612 1968 2936 3828 33" 8,64:~ 1288 1678 70" 1987 2964 386~ 34" 89~ 1338 ~745 71" 2005 2991 3898 35" 930 i390 ',.813 · 72'~ 2020 3013 3927 36" 967 i'441 1880 73" 2033 3033 3954 37" .1015 15!3 t972 74, 20/a4 · 30~,9 3975 75" 2052 3061 3990 75½" 2054 3~64 ,3994 ,. SERVICE REP" ~TAND INVOICE P.O. NO. STATION NO. ................. S-J~-~ JR~ g~,.r~ · DESCRIPTION OF WORK PERFORMED '- " ' NAMI[ M-H-~. ~A- ?.^- TO- .^T= TOTAL TOTAl lABOR INCLUOI='S sF'RvIcE (:::ALL & MILE:AGE: t SERVICEOF KERN STaTiON COUNTY. ~NTEN~NCE ,NC. ,., ~..E.,.- 1000 Mt. Vernon Ave. {3) Bakersfield. California 03307 X ~lo,/~ TOTAl. PRESS HARD - YOU ARE MAKING 5 COPIES · COUNTY OF KERN I STATE OF CALIFORNIA t i 116 East California Avenue Bakersfield-93307 , Telephone (805) 861-2'418 i o "Ce.rti/icate of Inspection d i J.O '/'/' 7 NAME U /~,..,~.2 ~ ',~.),?--.~_'.--.~//'~-,~ /y,~,~ / ...,r~ ,_: /-/ /7. I' OWNER 6! ' ~/" / / FORMER NAME ~:1 ~'~ ...........n ~ ......... '~'-- ' i ." ! '~ H :,,'"~ x ,, :,.:.,:,...' 4.',: ,': ~.. :', : '-w ,'-": ~ ,~- q : ":-":-.' iNtX ou~ 1 Vernon L. Lowe, Di,eoor 1 'Permit Questionnaire Normally, permits are sent to facility Owners but since many Owners live outside Kern County, they may choose to have the permits sent to the Operators of the facility where they are to be posted. Please fill in Permit ~ and check one of the .following before returning this form with payment: 1. Send all information to Owner at the address listed on invoice (if owner is different than Operator, it will be Owner's responsibility to provide Operator with pertinent informat ion). 2. Send all information to Owner at the following cor~rected address: Send all information to Operato~ ~ (Operator can make copy of permit for Owner). Environmental Sensitivity ~ UNDERGROUND HAZ~DOUS SUBST~CE STORAGE FAC * INSPECTION REPORT Type of Inspection: Routine ~ Co~plaint Reinspection Co==ents: ITEM VIOLATIONS NOTED 1. Primary Containment Monitorlngj a. Intercepting and Directing System b. Standard Inventory Control Monitoring c. Modified Inventory Control Monitoring d. In-Tank Level Sensing Device e. Groundmater Monitoring f. Vadose Zone Monitoring 2. Secondary Containment Monitoring: a. Liner b. Double-Walled Tank c. Vault 3. Piping Monitoring a. Pressurized b. Suction c. Oravlty 4. Overfill Protection 5. Tightness Testing 6. New Construction/Modification 7. Closure/Abandonment 8. Unauthorized Release 9. Maintenance, General Safety and Operating Condition of Facility Reinspectlon scheduled? Yes No Approximate Reinspection Date INSPECTOR: . , REPORT RECEIVED BY (Form ~H/~4P-170) · ADVANCED ENVIRONMENTAL CONCEPTS INC- February 17, 1994 ...:._ _.:.~_~ i Ms. Flora Darling ,-~ , Kern County Environmental Health Services Department 2700 "M" Street, Suite 300 Bakersfield, California 9330'1 · . ::---.~ ~_.....j Regarding: Environmental Site Assessment Report Chico and the Man Service Station 23'1 East '18th Street Bakersfield, California Dear Ms. Darling: Advanced Environmental Concepts, Inc. [AEC] has prepared the Environmental Site Assessment Report for the above referenced pi'eject/location. Enclosed please find that report, which AEC is submitting for review. Should you have any questions or require clarification on any aspects of the enclosed, please do not hesitate to contact our office at [805] 83'1-'1646. Respectfully yours, Advanced Environmental Concepts, Inc. ~.' ... D~bbfe Irwin ' ............... ProJ(~ct Coordinator / Office Administrator Attachments: Report [I) Distribution: `1 / Addressee - REG MAIL '1/Mr. Gene Bolton `1/Bksfld File · EI'-JVIFtOI'JMEt, I TAL CO~'JCEPTS WITH rDESIGt,] IN k41r4O. ,14flOASHEROAD.#206 * BAKERSFIELD· CA 93313 805,'831-16,1P, · FAX ;qPF,,,R;~! I?;! -ADVANCED ENVIRONMENTAL CONCEPTS INC- Advanced Environmental Concepts, Inc. is pleased to present the following: Environmental Site Assessment for Chico and the Man Service Station 231 East t 8th Sffeet County of Kern · Bakersfield, California This report has been prepared for: ' Gene Bolton, Pro-Tech Specialties January ~994 · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND * ,4400 ASHE ROAD. #206 * BAKERSFIELD. CA 93313 805/831-1646 · FAX 805/831-1771 Environmental Assessment Report Advanced Environmental Concepts, Inc. Table of Contents Page 1.0 INTRODUCTION l 2.0 BACKGROUND '1 3.0 SITE CHARACTERISTICS 2 3, '1 Site Description 2 3.2 Regional Geology 3 3.3 Local Geology 3 3.4' Hydrogeology 3 4.0 ASSESSMENT ACTIVITIES 3 4.'1 Decontamination Procedures 3 4.2 Soil Borings 4 5.0 ANALYTICAL RESULTS 4 6.0 FEASIBILITY STUDY 5 6,1 Soils 5 6.2 Extent of Hydrocarbon Migration 5 6.3 Remediation Alternatives 6 7.0 CONCLUSIONS 7 8.0 RECOMMENDATIONS 8 9.0 LIMITATIONS 8 '10.0 CLOSING 9 Appendices: IA] Project Maps/Figures [BI Boring Logs ICI Laboratory Reports/Chain-of-Custody Documents Project: AEC 94C-14~'1 · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND · 4400 ASHE ROAD. #206 * BAKERSF'IELD. CA93313 805/831-1646 - FAX 805/831-1771 Environmental Assessment Report Advanced Environmental Concepts, Inc. 1.0 INTRODUCTION This report presents the results of o soil investigation conducted by Advanced Environmental Concepts, Inc. (AEC) to estimate the extent of hydrocarbon Impacted soil resulti0g from the unauthorized discharge of gasoline, identified following the removal of four (4) underground storage tank (UST) and associated plumbing. The UST was located of the Chico and the Man Service Station, 3151 East 18th Street, Bakersfield, California (Appendix A, Figure t). The project was performed on December 22, 1993, in accordance with the work plan previously designed and submitted by AEC and approved by the Kern County Environmental Health Department [KCEHD]. This investigation was authorized by Mr. Gene Bolton of Pro-Tech Specialties, representing Mrs. Nelsien the property owner, and conducted under the direct supervision of Ms. Flora Darling, Hazardous Materials Specialists, Kern County Environmental Health Department (KCEHD). The subject site is located In east Bakersfield. The general area is comprised of light Industries, retail stores and related Service businesses. Contained in this report is background information regarding existing site characteristics, regional and local hydrogeological profiles, and the project history. Also included in the following sections are the objectives and scope of investigation, detailed investigative procedures, and subsequent findings. Finally, AEC provides an evaluation of said findings and makes related conclusions and recommendations. The report appendices contain project maps and figures (Appendix A), soil boring logs (Appendix B), laboratory reportslchain-of-custody documents (Appendix C), and cross- sections depicting the horizontal and verlical extent of hydrocarbon migration (Appendix D). 2.0 BACKGROUND On April 21, t989 Valley Tree Construction supervised the excavation, removal, and disposal of four (4] gasoline UST's from the subject site. Very strong gasoline odors were noted in the soil during the excavation procedures. Former tank locations and sample locations are presented on Figure 2 [Appendix Al. The analytical results of soil samples collected from below the removed UST are presented in Table t. Units are in milligrams per kilogram [mg/kg] which are equivalent to parts per million (ppm). Table I Analytical Results - Soil Samples Tank Removal 4121/89 (ppm) Sample I.D. TPH-g Benzene Toluene Xylenes Ethylbenzene TH-I-2' 6900 310 920 1210 220 TH- 1-6' 5600. 210 690 1085 190 TH-2-2' 4300 t50 550 670 140 TH-2-6' 7000 230 930 1520 280 Project: AEC 94C-1411 I · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND · 4400 ASHE ROAD. #206 · BAKERSFIELD. CA 93313 805/831-1646 · FAX 805/831-1771 Environmental Assessment Report Advanced Environmental Concepts, Inc. Table '1 (continued] Analytical Results - Soil Samples Tank Removal 412'I/89 (ppm] Sample I.D. TPH-g Benzene Toluene Xylenes EthyIbenzene TH-3-~ 5000 85 490 1230 210 TH-3-6 2500 '15 '100 472 70 TH-4-2' ND ND ND ND ND TH-4-6 ND ND ND ND ND TH-5-2' ND. ND ND ND ND TH-5-6 ND. ND ND ND ND TH-b-2' ND ND ND ND ND TH-b-6 ND ND ND ND ND TH-7-2' ND ND ND ND ND TH-7-6 ND ND ND ND ND TH-8-2' ND ND ND ND ND TH-8-6' ND ND ND ND ND TH-9-2' ND ND ND ND ND TH-9-6 ND ND ND ND ND Detection Limit: 1.0 2.0 2.0 5.0 2.0 ND: Non-detected TPH-g: Total Petroleum Hydrocarbons as gasoline Based on these results, KCEHD required that a site assessment evaluating the lateral and vertical extent of hydrocarbon impacted soil be performed. 3.0 SITE CHARACTERISTICS The following sections summarize the project site features and conditions along with regional and local geological and hydrological characteristics. 3.1 Site Description The Chico and the Man Service Station is located on the southwest corner of the intersection of East 18th and Sonora Streets, in Bakersfield, California. The general area is comprised of light industry and related services. The subject site is at an average elevation of 385-feet above mean sea level with minimal topographic relief. The property is presently a vacant lot. Project: A[-C 94C-t4tI 2 · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND * .4400 ASHE ROAD. #206 * E~AKERSFIELD CAg3313 805t831-1646 · FAX 805/831-1771 Environmental Assessment Report Advanced Environmental Concepts, Inc. 3.2 Regional Geology The subject property is located in the Southern San Joaquin Valley [Valley] which is a part of the Central Valley of California. The Valley forms the southern two-thirds of the Central Valley and is characterized as a broad structural trough. It is bordered on the east by the Sierra Nevada Range and on the west by the Coast Range [Diablo and Temblor Mountains]. The Valley extends 250 miles southeastward from the confluence of the San Joaquin and Sacramento Rivers to the Tehachapi and San Emigdio Mountains. The width ranges from 2,5 miles wide near the Kern River to approximately ,55 miles wide near the Kings River, with an approximate average width of 40 miles. Geology of the southern Valley consists of a Pre-Tertiary basement complex overlain by marine and non-marine sedimentary rocks of Tertiary age. These rocks are composed of consolidated sandstones, siltstones and shales which thicken from northeast to southwest. The Valley was once an inland sea of comparatively shallow depth that continued to subside due to the ever increasing load of sediments transported and deposited from higher elevations. These deposits consist of gravels, sands, silts and clays. The majority of the groundwater pumped from the Valley floor occurs within these relatively unconsolidated continental deposits. 3.3 Local Geology The investigated property is located on alluvial deposits, created from sediments transported and deposited by local streams, and during flood stages of the Kern River. The site is situated in a Iow to moderate energy flood plain environment consisting of weakly consolidated to unconsolidated, poorly bedded sands and silts. 3.4 Hydrogeology Ground and surface water in the central Bakersfield area is regulated by the Kern County Water Agency. According to the Kern County Water Agency "Water Supply Report-1990", depth to groundwater in unconfined and equivalent wells is estimated at 180-feet below grade level [BGL] at the site. No perched water bearing zones are reported in the area. 4.0 ASSESSMENT ACTIVITIES 4. t Deconlamination Procedures Prior to initiating drilling operations, the augers and associated drilling equipment were thoroughly cleaned using a high pressure steam cleaner. In addition, the soil sampler and hand auger were washed in an Alconox solution and double rinsed in clean, deionized water prior to initial use and between each sampling interval to minimize the possibility of cross-contamination between samples. Project: AEC 94C-14tI 3 · ENVIRONMENTAL CONCERTS WITH DESIGN IN MIND · 4400 ASHE ROAD. #206 · BAKERSFIELD. CA 93313 805/831'1646 · FAX 805/831'1771 Environmental Assessment Report Advanced Environmenlal Concepts. Inc. 4.2 Soil Borings On December 42, 4994 four [4] soil borings lB-4, B-2, B-3, and B-4] were drilled on the subject property. The borings were advanced using a truck-mounted Mobile B-64 drill rig, equipped with 8-Inch O.D. continuous flight, hollow-stem augers. Borings '1, 2, and 4 were drilled to a total depth of 60 feet BGL and boring 3 was drilled to 30 feet BGL. The borings were positioned to evaluate the vertical and horizontal extent of the hydrocarbon migration. Soil samples were collected at intervals of 5-feet in all borings commencing at 40-feet BGL. Samples were obtained by driving a thin-walled steel sampler, equipped with three (3] 2.5-inch x 6-inch brass sleeves, a minimum of '18-inches into previously undisturbed soil. The sampler was driven ahead of the augers using a 440- lb. slide hammer with a 30-inch vertical fall. Following each sample drive, the sampler was withdrawn from the borehole and the three [3] brass sleeves were removed. The bottom sleeve was retained for laboratory analysis and prepared by placing teflon tape and plastic caps over each end, then securing the caps with duct tape. The samples were labeled, placed in sealable plastic bags, recorded on a Chain-cf-Custody document and placed in an ice chest cooled with blue ice. Soil exposed at each end of the center brass sleeve, and the cuttings, were examined for lithological purposes and for any obvious evidence of hydrocarbons. Lithologic descriptions [Appendix BI were logged according to the Unified Soils Classification System [USCS]. Chain-of-Custody protocol was strictly followed to ensure sample integrity and traceability. Upon completion of the above described procedures, the barings were abandoned with hydrated bentonite followed by a cement slurry to grade. 5.0 ANALYTICAL RESULTS Selected soil samples were submitted to Associated Laboratories, Inc., of Orange, California and analyzed for total petroleum hydrocarbons as gasoline [-fPH-g] and volatile aromatics [BTXE] using CA DHS and EPA 8020 method, respectively. The analytical results are presented in Table 2 and the laboratory reports and Chain-of Custody are provided in Appendix C. Units are in milligrams per kilogram IreD/kg] which are equivalent to parts per million [ppm]. TABLE 2 Analytical Results - Soil Borings 42145/93 [ppm) Sample I.D. TPH-g Benzene Toluene Xylenes Ethylbenzene B4-20 ND ND ND ND ND B'1-30 ND ND ND ND ND B~-40 '1 '1 0.80 2.0 0.93 0.'1 '1 B'1-50 '13 ND ND ND ND B '1-55 '19 0.08 0. '15 0.06 ND B'1-60 ND ND ND ND ND ProJeot: AEC 94C-444 4 4 · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND · 4400ASHE ROAD. #206 * BAKERSFIELD. CA93313 805/831-1646 · FAX 805/831-1771 Environmental Assessment Report Advanced Environmental Concepts, Inc. TABLE 2 [continued] Analytical Results - Soil Borings t 2115/93 Lopm] Sample I.D. TPH-g Benzene Toluene Xylenes Ethylbenzene B2-15 4300 ND 2.2 380 4.3 B2-25 2600 0.20 35 300 40 B2-30 9800 45 910 1400 250 B2-35 2700 2.7 130 350 55 B2-40 14000 '190 1500 2000 370 B2-45 39 0.23 2.0 3.4 0.56 B2-50 4.6 ND 0.85 0.20 ND B2-55 '10 0.08 0.02 0.'!0 0.0'1 B2-60 15 ND ND ND ND B3-20 42 ND ND ND ND B3-30 2700 '12 200 340 56 B4-30 70 0. '1 '1 '1.5 '1.3 4.4 B4-50 16 ND 0.0t 0.039 ND B4-60 '17 0.02 0, '1 0.16 0.02 D.L.(mg/kg) 1.0 0.005 0.005 0.005 0.005 ND: Non-detected at indicated limit of detection D.L. Detection Limit 6.0 FEASIBILITY STUDY 6. t Soils The soil profile at the site consists of silty sands, "dean" sands, and poorly sorted sands to a total drilled depth of 60 feet BGL. The silty sands [SM-ML] are commonly tan-brown, slightly to very compact, commonly friable, and slightly to moderately moist. The "clean" sands [SW] are olive gray-buff, moderately dense, unconsolidated, and slightly moist. The poorly sorted sands [SP-GC] commonly consist of olive-gray to white, moderately to very dense, unconsolidated to very consolidated, and slightly moist. The sediments are typical of Iow to moderate energy fluvial deposits subjected to periodic reworking during flood stages. The strata were loosely compacted due to the increasing weight of the overlying sediments. 6.2 Extent of Hydrocarbon Migration Analytical results Indicate that significant hydrocarbon concentrations extend to a depth of 45 feet BGL with the highest concentration, t4,000 ppm, being detected in B-2 at 40 feet BGL Hydrocarbon levels below '100 ppm were detected in B-I and B-4, and below Project: AEC 94C-t4t I 5 · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND · 4400 ASHE ROAD, #206 · BAKERSFIELD, CAg3313 805t831-1646 · FAX 805/831-1771 Environmental Assessment Report Advanced Environmental Concepts, Inc. 40 feet BGL in B-2. Plume dimensions are approximately 60 feet deep by 60 feet wide and forms an nonsymetric, elongated, spheroid shape that occupies approximately 6,200 cubic yards. The highest concentrations of hydrocarbons are contained within about 785 cubic yards. 6.3 Remediation Alternatives Advanced Environmental Concepts, Inc. recommends the following three [3] remediation alternatives for treatment of the hydrocarbon contamination located at the subject facility: I ) No-action alternative; 2] Implementation of an in-situ vapor extraction system; and 3) In-situ bioremediation of the impacted soil. Alternative ~t: The no-action remediation alternative involves leaving in place, the soils that exhibit hydrocarbon levels in excess of RAL, then capping the contaminated area with a relatively impermeable layer of asphalt or concrete. This alternative would require approval of the Kern County Environmental Health Department. To be eligible for this remediation alternative, the site location must satisfy specific parameters associated with depth to groundwater, site geology and contaminant concentration levels. It is unlikely that this facility will be eligible for this alternative in that the site does not satisfy the following criteria based upon the "Leaching Potential Analysis- gasoline" as outlined in the LUFT Manual: [al Groundwater depth is estimated at 180-feet BGL [10 points] [bi No discernible fractures [10 points) Ici Average annual precipitation is less the 10-inches [5.72] [10 paints) [dj No available man-made conduits [t0 points] [el Coarse grained soil [ 9 points] There is a total of 49 points scored which correlates to the following maximum allowable levels of gasoline-range hydrocarbons that can be left in place; 1,000-ppm and 1/50/50/50 for TPH and BTXE constituents, respectively. The hydrocarbon concentration levels found at the subject site exceed these limits to a depth of 45-feet in soil boring B-I. Altemative The vapor extraction alternative involves the withdrawal of the volatile organic constituents from the soil matrix via a vacuum pump manifolded to extraction wells, and the subsequent destruction or collection of hydrocarbons using a regenerative thermal oxidizer or carbon adsorption. This system operates on the principle that volatile organic compounds have relatively high vapor pressures and will volatilize at ambient soil temperatures provided a reduction in pressure is applied. The treatment Project: AEC 94C-1411 6 · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND · 4,,400 ASHE ROAD. #206 · 8AKERSF:IELD. CA93313 805/831-1646 · FAX 805/831-1771 Environmental Assessment Report Advanced Environmental Concepts. Inc. at the subject site would also involve injecting air into the perimeter wells to enhance the volatilization of the diesel-range hydrocarbons while oxygenating the soil and promoting natural bio-degradation. Vapor extraction is most effective and efficient in coarse grained soils [SP], alihough soils classified as ML [silt) also have the capability of being treated by this method. Because hydrocarbon vapors are generated by the removal process, an air emission recovery system will be required by the local Air Pollution Control District [APCD] if the hydrocarbon concentrations exceed allowable emission levels. The soil venting system is also most effective on hydrocarbons with high vapor pressures. The advantages of this treatment alternative include the ability to treat the soil in-situ, ease of installation and manifolding of the extraction wells, minimal maintenance, relatively rapid reduction in hydrocarbon concentrations, and minimal disruption of normal site operations. Alternative Bioremediation involves treating the' impacted soil either aboveground or In-situ. The aboveground treatment alternative involves excavation and surface treatment of the affected soil and is more time-efficient and effective than the in- situ method. However, this discussion will center on the in-situ method because the depth of gasoline impacted soil and the proximity to the warehouse negates an excavation alternative. The in-situ treatment method involves ntroduction of microbes and nutrients to the contaminated soil via injection wells screened across the affected intervals. A mixing tank is placed above the well and hydrostatic head pressure allows continual percolation of biologically active fluids through the contaminated zones. The soil type is primarily a sand or silty sand and would be receptive to an active biological treatment method. However, intervals of consolidated sand are also present, which could impede the lateral migration of the microbes. To offset this effect it would be necessary to install a tight injection well pattern, which increases the treatment cost per cubic yard. 7.0 CONCLUSIONS On the basis of our investigation, AEC presents the following conclusions: a) The soil profile at the subject site generally consists of interbedded sands and silts to the total drilled depth of 60 feet. b) The analytical results indicate elevated levels of TPH-g and BTXE to a total depth of 40 feet in B-2 and B-3. TPH-g and BTXE levels are below the RAL for gasoline in soil in all other samples analyzed. c) The vertical extent of the gasoline migration appears to extend to a depth of 60 feet BGL. The lateral extent of the plume is about 60 feet. The approximate volume of the plume is 6,280 cubic yards and extends underneath a large portion of the site and probably the adjoining streets. Project: AEC 94C-t4tt 7 · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND · 4400 ASHE ROAD. #206 ,, E~AKEFiSFIELD. CA93313 805/831-1646 · FAX 805/831-1771 Environmental Assessment Report Advanced Environmental Concepts, Inc. d] The soils containing elevated levels of TPH and BTXE are separated from groundwater by approximately t40 feet. e] It is unlikely that groundwater is currently threatened by this unauthorized release. 8.0 RECOMMENDATIONS Based upon the levels and volume of gasoline-range hydrocarbons and the found in the coarse grained soil, Advanced Environmental Concepts, Inc. recommends that the vapor extraction alternative be implemented at this site. 9.0 LIMITATIONS This work has been performed in accordance with generally accepted environmental science and engineering practices. The soil samples for this project were obtained on a finite grid as directed by the on-site regulatory agency representative, hence the analytical results are indicative of discrete samples and are not meant to be misconstrued or representative of unsampled subsurface areas. Conclusions and recommendations are based upon information collected and compiled during this investigation. No other warranty, expressed or implied, is given. Project: AEC 94C-14tt 8 · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND · ,:t..~00ASHEROAO.#206 · BAKERSFIELD. CA 93313 505/831-1646 · FAX 805/831-1771 Environmental Assessment Report Advanced Environmental Concepts. Inc. 10.0 CLOSING Advanced Environmental Concepts, Inc. appreciates the opportunity to be of service to Mr. Gene Bo,on on this project. If there should be any questions or additional information required regarding this report, please do not hesitate to contact our office at (805) 834-1646. This Environmental Site Assessment has been prepared by: Advanced Environmental Concepts, Inc. This Environmental Site Assessment has been reviewed by: Pr/bject hydrogeologist ~Z~alifornia Registered Environmental Assessor ~1508 DOCZZBX Projecl: AEC 94C-14t · ENVIRONMENTAL CONCEPTS WITH DESIGN ~N MIND 4a. 00 ASHE ROAD. #206 * BAKERSFIELD. CA 93313 805/831-1646 · FAX 805/831-1771 Advanced Environmental conCePts, Inc. :- ,. :...~ .% . -: .....:.. - . .... . , .- .- · . ~ ......' ::... ' .- ~.~ · ........ -. ,. '- -,- . . ~; · -.. : -_ -. ,. ,. - . - ' " ' ,.-" ~" :: i- ,~: ' - "":'"'" ~?' .... i;: ....' · ~' '"'"'. ~ ·' . i~ ~. -':: .....: . .. ' . 'Z.:,.h":'- . .,: :, · . }. ".. . ,..:" .'.:'.. ,:. '.L.'.,>,, ;.¢'?..;' , ~'. ;-:,.-.. .. t',--.,.:; ~.,~ '.,..-.,. '" '"'~~ A"' ' ':' ......' ..... ' ' ' ' ' ' ' :'""" "~'"' '" .... ' "~ '. · ': .~ "'-' '- '~'-'r- ........ ' .... ~ ? "4.: ",,"-' '- :' ¢.'i*'(',' · · '; "' -' '~'-' .f .'; , :" ' ....... . , ........ .~ .....-. . ......... ;. .=,;.,:~..:-,_ .-.,,..:,._, · . _ ,-. -. _ ... .. -,-; ...,_ ,." _ · ...:' ? .~.'.~. ,.'~... "- "'.." .' "? -~ ...... ' ...... "' ,.:..':..::,. ,':.(7..,... ,:....:;' ...'::,-:' .:'. ,~'.,?;..:~ .' PROJECT' MAPS / FIGURES.. ' "~.'- ~--':' ''~ · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND · I ! EC -SITE LOCATION MAP- FIGURE A Chico and the Man Service Station 1 231 East 18th Street ADVANCED ENVIRONMENTAL CONCEPTS County of Kern · Bakersfield, CA P.O. BOX40672 BAKERSFIELD, CA 93384 EAST 18th STREET FORMER TANK PIT ~ :. m / '2500~ i ~ooo 7ooo TH-1 SAMPLE I.D. ~ ............................................................................................ il, ~ SAMPLE LOCATION ~_ ~'~ 5600 TPH-g IN PPM SCALE / Eip,=~__ -Soil SampleTank RemovalLOCation Map- FIGURE i lm~ Chico and the Man Service Station 231 East 18th Street ADVANCED ENVIRONMENTAL CONCEP7"~ P.O. BOX40872 BAKERSFIELD, CA 93384 County of Kern · Bakersfield, Califomia E. 18th STREET BUILDING VACANT LOT · FORMER TANK PIT~ FENCE B~ SO~L BOR~.G ~. O. jl · SOIL BORING LOCATION ~ 1" = 10' I /~ E~f~.~ - Soil Boring Location Map - FIGURE 231 East 18th Street ADVANCED ENVIRONMENTAl CONCEPTS P.O. BOX40~7E BAKERSFIELD, CA .q3384 County of Kern · Bakersfield, California / E. 181h STREET VACANT LOT # · FORMER TANK ~ i!::ii!~i:i:ii?:i /~' / ~,~ .: :::::i:::::::::::' ?~. ,n · '.'. .... ' ~ /~ SOIL BORING LOCATION / / ~[~ SCALE ~ ~:, l~l~_ -Extent o,AreaiHydrocarbons-view FIGURE ~ Chi~ and the Man Se~ice Staaon 4 231 East 18~ S~eet ADVANCED E~I~ONVE~A~ CO~CEP~ P.O. BOXY72 BAKERSRE~, CA 9~ CounW of Kem· Bakersfield, CNEomia NORTH O O SOUTH A' A [ B4 B3 B2 BI : ~ 10' APPROXIMATE A[IEA OF TOTAL PLUME ,,, ,,..,,,,,,..,,,,",[300 i ---'- ~, ,,,,"'""'"'"'"" ; . ---- ; ; ND 20' jllJJllIljlljljlijjljljljl /~/ ,F 70 : ND 30' .. ; 11 40' :-- 16 ZONE OF >1,000 ppm 4.6 ----~ 13 --- 50' _.- ~0 [ ,,,,,,,,,,7 ~ 19 ~,I,. 17 ..,1,~,,,,,,,,, ...... ,,,,,,""' --. ND --- 60' 'T' ocli,,,,,,,,,,,,,,,,,,,..,....................,..,...............,..,,."''' Go' ~u i "~ TPI~-g IN PPM 1 -- 10' I ND - NON DETECABLE 1 SCALE / -Cross Section A-A'- FIGURE Extent of Hydrocarbons - TPH-g Chico and lfle Man Service Station 5 ADVANCED ENVIRONMENTAL CONCEPTS 231 East 18th Street P.O. BOX4O872 BAKERSRELD, CA 93384 County of Kern · Bakersfield, Califomla Advanced Environmental Concepts, Inc. - ' .'- .'. "' .... .' :~:'.- ,./,", ;-..,,'~. '.'~ ,~ ' .... ";' ": i:' ...:' : - · :" "" .... ' .... ' ' '"'"'- ' '.- "' ..... : ..... " "' ' '"" i;'.;' ' ....... ., '-... ~.; .... ... -:" , '. : . --.- ';;.:;',-. :;'" -"-';: '"';i,'.' ' '- , -. .,. ,; ... · .... , ,~.'-,.-... '".... ' ....-: '- .... ,..... ;..,; . .. ~' ..' . ; - " ': ' '. ':' · -' -. 'i . .; , · .. -_ .,: ~, . '-,:. '-.. .... :-., ;,,./- · .·:.!. :·:'; BORING LOGS . - . .~;-.-' .;.;,~ -_- '... -:, , ~ -". ;~ ';-'; :...: 'i,. ": j.-. :-..-,. ' . . . '- .. :, ;,...i.;~. _" .~ .-,.:-;,.,..~ ,:_' .... .- . -~. ..;,:..-....:, .,...-.;: ', '. ,,.~- . .- ,_.~. . .: _' : . , · , , _ ,... -,; -..~, .. ,-; · . -, ...~ Z .'~: j._..-, · , , , . :~.','- ,~..~:~ · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND · W£LL D£PTH PID ~RVAL I LI~LOGIC DESCRIPTION DETAIL (ppm) ~VCOUNT ! LOG .. B 5 B o GRAB SILTY SAND (SM): Dk yell bm, fn- cse, hrd, 60% send, 40% fines, SM moist, no odor. 1 0 0 8 I SP POORLY GRADED SAND (BP): Yell Bm, fn-med grained, 11· subang-submd, hard, medium dense, homo, moist, no odor. 15 ~ 15 ~ 0 12 22 ~ SP SAME AS ABOVE ~ 20 m 0 12 · SP SAME AS ABOVE 30 -- 25 -- soo 14 · SP SAME AS ABOVE 18 -- 30 -- 700 10 I SANDY SILT (MI_): Gm-blu, very stiff, 60% 18 ML fine grained, Iow plastic, no dry strgh, 40 % hydrocarbon odor. AEC WELL/BORING LOG P.O. BOX 40872 BAKERSFIELD, CA 93384 PROJECT ChlcoandtheManlGaneBolton LOCATION 231 E. 18thStreet, Bakers. lleld, Cailfomle WELLJBORING NO. a.1 SU.rACE ELEVATION WELLHEAD ELEVATION N/A DATE DRILLED 12/_1~3 LOGGED BY J. Dunwoody REVlL=WED BY J. DUNWOODY __ DRILUNG COMPANY S B & S Drilllncj Coml~any DRILLER Veto_Smith METHOD HOLLOW STEM AUGER BORE HOLE DIAMETER 8 INCH TOTAL DEPTH 60' DEPTH TO WATER: INITIAL NIA STATIC CASING TYPE DIAMETER SCHEDULE INTERVAL N~A TO ....... _N/A_ ........ SCREEN TYPE DIAMETER SLOT SIZE INTERVAL N/A .TO N/A FILTER PACK TYPE INTERVAL N/A TO _ _NIA SURFACE SEAL TYPE Cerne~ sand slurry over bentonite INTERVAL NIA TO NIA NOTES WELL PID ,~i~PLE ~O U.S.C.S. DEPTH ~RVAL LI~ LOGIC DESCRIPTION DETAIL (ppm) BL'OWCOUNT LOG --- WEM. GRADED SAND ($W): Yell-bm, flne-cse grelned, hard. subeng-$ubrnd, reed dense, homo, hydrocar'oon odor. ~ 35~ 700 10 · SW 18 -- 25 40~ soo 8 I 11 SAME AS ABOVE 18 · ML SILT WITH ~ND (ML): Dk yell-bm, hard, 20°A sa~l, ~c~e, homo, 35B strong hydmcs~on (x~r. 50~ 6oo 21 I SW WELL GRADED SAHD (SW): Redlshbm, fn-cse 50 subang~ubmd, very dense,homo, moist, mod hydroca~oon odor. SAME AS ABOYE 10 60 -- o ~o · T. D. D~lled 24B SM/~L SILTY SAND/SANDY SILT (SM/ML): 60 Feet 50 brn-dkyellbm,dnese~'~u'd, 50% fines, 50% sand, ~n-med, homo, no AEC ,~ov,~,cEo E~,,O~~.~. CO, CE~ WELI_/BORI NO LOG P.O. BOX40672 BAKERSFIELD, CA 93384 PROJECT Chico and the Man I Gene Bolton LOCATION 231 E. 18th Sln~t, Bakersfield, California WELUBORING .O. a-1 JPLE ID WELL DEPTH PID ~RVAL U.S.C.S. DETAIL (ppm) BL"I3WCOUNT LOG LI LoGIc DESCRIPTION SILTY SAND (SM): Dk yell bm, fn- cse, hrd, 60% sand, 40% fines, B 5 B 0 SM moist, no odor. GRAB ~ 10 ~ 150 20 · sP POORLY GRADED SAND (SP): Yail Bm, fn-medgrained, 25 suban~submd, hard, medium dense, homo, moist, no odor. -- 15 -- 1900 19 · SP SAME AS ABOVE __ 25 l 26 -- 20 -- 2500 26 SP SAME AS ABOVE ~ 25 ~ 2500 45 SP SAME AS ABOVE ~ 30 -'-- 2500 27 I ML no dry stmtgh, 60% fines, 40% sand, flne-med grained, 25J poody s~led, homo, moist, organics, sl]'ong hydrocarbon odor. AEC WELL/BORING LOG P.O. BOX 40672 BAKERSFIELD, CA 93384 PROJECT ChlcoandtheManlGeneBolton LOCATION _231E. 18thSlreet, Bakersfleld, Cailfomla WEI/JBORING NO. 8-2 SURFACE ELEVATION WELLHEAD ELEVATION _.._~A DATE DRILLED 12J15/93 LOGGED BY J. Dunwoody REVIEWED BY_ J. DUNW.O~3__DY DRIllING COMPANY S B & S I:)flllln~3 ComDany DRILLER __Veto Smith METHOO ~HO__.L.~3_.~W_S__TE_M__AU_ GER___ BORE HOLE DIAMETER 8 INCH TOTAL DEPTH 60' DEPTH TO WATER: INmAL N/A STATIC ~N/A CASING TYPE DIAMETER SCHEDULE INTERVAL N/A TO ........ _NJA_ ......... SCREEN TYPE DIAMETER SLOT SIZE INTERVAL N/A .TO __N/A FILTER PACK TYPE INTERVAL. N/A TO SURFACE SEAL TYPE Cement sand slurry ove~ bentonite INTERVAL N/A .TO N/A NOTES WELL DEPTH PID ~tlPLE ID[ U.S.C.S. ~RVAL LI LOGIC DESCRIPTION DETAIL (ppm) BLOWCOUNT LOG WELL GRADED SAND (SW): Yell-bm, flne-cse grained, hard, subang-subrnd, med dense, homo, hydrocarbon odor. ~ 3 5m 2500 38 · sw ~ 40 ~ 19o0 39 · sw SAME AS ABOVE 51 ~ 45 ~ 2500 29 · ML SILT WITH SAND (ML): Dk yell-bm, hard, 20% sand. fn-cse, homo, - "m ~ hydrocarbon odor. ~ 50 ~ 2300 39 m WELL GRADED SAND (SW): Redlshbm. fn-cse grained. 48m sw subang-submd, very dense,homo, moist, mod hydrocarbon odor. 55 ---- 220 29 SAME AS ABOVE " m SILTY SAND/SANOY SILT (SM/MI..): Redish 00 ~ 0 29· brn-dkyellbm,dnese/hard, 50% fines, 50% sand, fn-rned, homo, no T. D. Drilled m SM/ML 60 Feet 35m odor. 65-- ~RO~ECT Ohico ~md tho Men I Gen® Boron LO~A?ION ~H E. 18th S~m~t, B~k~r~leld, ~ll~oml~ I/~LL/BOFIINO NO. WELL PID ~MPLE ID U.S.C.S. DEPTH ~RVAL LIt~'LOGIC DESCRIPTION DETAIL (ppm) a~vcouNT LOG SILTY SAND (SM): Dk yell bm, fn- cse, hrd, 60% sand, 40% fines, m 5 m o GRAB SM moist, no odor. ~ 10 ---- o 18 ~ SP 22 POORLY GRADED SAND (SP): Yell Bm, fn-med grelned, -- 35B suban~.submd, hard, rnedlum dense, homo, moist, no odor. --15 ...-- 0 22 18 · SP SAME AS ABOVE -- 20 --- 75 29 29 · SP SAME AS AaOVE __ 31 ! -- 25 ~ 2s0o 28 · SP SAME AS ABOVE 32 30 ~ 2500 SANDY SILT (MI.): Gmblue - gry, very stiff, Iow plastic, T, D. Drilled 29 B ML no dry slmtgh, 60% fines, 40% sand, flne-med grained, 30 Feet 35~ poorly srted, homo, moist, organics, strong hydrocarbon odor. AEC =V VCEOE .O~M=NT= CO~C=P= WELI./BORING LOG of P.O. BOX 40872 BAKERSFIELD, CA 93384 PROJECT Chico and the Man ! Gene Bolton LOCATION 231 E. 18th Street, Bakersfield, Cellfomla WEUJaOR~NG NO. _a-3 SURFACE ELEVATION WELLHEAD ELEVATION NrA DATE DRILLED 12/15~93 LOGGED BY. J. Dunwoedy REVIEWED BY J. DUNWOODY DRILUNG COMPANY S_B & S Drilling Company DRI! ! FR ___~em Smith METHOD HOLLOW STEM AUGER BORE HOLE DIAMETER 8 INCH TOTAL DEPTH 30' DEPTH TO WATER: INITIAL N/A STATIC__N!_A_ CASING TYPE DIAMETER SCHEDULE INTERVAL N/A TO ____. N_/A_ ....... SCREEN TYPE DIAMETER SLOT SIZE INTERVAL_ N/A ~TO NIA FILTER PACK TYPE INTERVAL NIA TO . _N~A- INTERVAL N/A TO_____N./.A. SURFACE SEAL TYPE Cement sand slurry over bentonite _ NOTES WELL DEPTH PID PLE ID DETAIL (ppm) SLOWCOUNT LOG LI LOGIC DESCRIPTION -- 5 -- 0 SM SILTY SAND (SM): Dk yell bm, fn- cse, hrd, 60% sand, 40% fines, GRAB moist, no odor. B 10 m 0 22 SP i POORLY GRADED SAND (SP): Yell Bm, fn-med grained, 25 subang-subrnd, hard, medium dense, homo, moist, no odor. ~ 15 -- 0 18 B SP __ 35 SAME AS ABOVE ~ 20 -- 0 28 sp 35 I SAME AS ABOVE ~ 25 --- so SP 29 · SAME AS ABOVE ~ 30 25 39 IBI ML SANDY SILT (MI.): Gmblue - gry, very stiff, Iow no dry slrntgh, 60% fines, 40% sand, fine.reed grained, 44I poorly srted, homo, moist, organic~, strong hydrocarbon odor. AEC =V VCEOE~W.O~M ~TALCO~CEPTS WELL/BORING LOG~ of 2 P.O. BOX 40672 BAKERSFIELD, CA 93384 PROJECT ChleoandtheManlGefleBolton LOCATION 231E. 18thSt~eet, Bakersflekl, CaJlfomla WEM.JBORING NO. B-4 SURFACE ELEVATION WELLHEAD ELEVATION N~A DATE DR;~ ~ ~O 12/15/93 LOGGED BY J. Dunwoody REVIEWED BY J. DUNWOOD¥ DRILLING COMPANY S B & S Drlllin¢l Company DRILLER __~em_Sn',lth METHOD _HOLLO _W_S__TI~ M ~_G. ER BORE HOLE DIAMETER 8 INCH TOTAL DEPTH 60' DEPTH TO WATER: INmAL NIA STATIC ___N/_~ CASING TYPE DIAMETER SCHEDULE INTERVAL N~A_ TO __N_]A_ _ SCREEN TYPE DIAMETER SLOT SIZE INTERVAL NIA TO NIA FILTER PACK TYPE INTERVAL NIA __.TO ..... SURFACE SEAL TYPE Cement sand slurry over bentonite INTERVAL NIA TO NIA NOTES J~IIPLE ID U.S.C.S.A WELL PID DEPTH ~RVAL LI~LOGIC DESCRIPTION DETAIL (ppm) BLOWCOUNT LOG '~ ~ 3 5 ~ 180 18 · sw WELL GRADED SAND (SW): Yell-bm, flne-cse grained, hard, 22I subang-submd, med dense, homo, hydroca~om~ odor. m 40 ~ 75 29 ~ SW SAME AS ABOVE 28 ~ 45 ~ 75 38 I ML SILT WITH SAND (MI.): Dk yell-bm, hard, 20% sand. fn-cse, homo, m 50 m 25 28 · 26B SW WELL GRADED SAND (SW): Redishbm, fn-cse grelnedd, -- 29 subang-submd, ve~/dense,homo, rnolst, mod hydrocarbon odor. ~ 55 ---- 0 6 · SAME AS ABOVE 12B SW 10 SILTY SAND/SANDY SILT (SM/MI.): Reddish 60 0 20~ brn-dkyellbm,dneae/hard, 50% flne~, 50% sand, fit-med, homo, no T. D. Drilled 24 ~ SM/ML 60 Feet .50 , 65 ~ ,~ov,~/vc~z~E~/~oN~E/,n'~z. co~c~'7~ WELL/BORING LOG 2 o~ ~ AEC ~.o. ~ox,~= ~,~/~,~. c,~ ~.~ PROJECT Chioo and the Man / Gene Bolton LOCATION 231 E. 18th Slmet, Bakersfield, California WELL/BORING.O. B-4 Advanced Environmental Concepb. Inc. ...... ,-' .. ~. - . .?-~' .. ,., ... . . .~ · - ~~TORY REPORTS ~. ..... -' -," "~" "':' 'CHAIN~F~USTODY 'DOCUMENTS' ' .~-Z -'.' .. ENVIRONMENTAL CONCEPTS W~H DES~N IN MINE) · ASSOCIATED LABORAZORIES 806 Nort]] Batavia-Orange, California 92668-714/771-6900 * FAX 714/538-1209 CLIENT Advanced Environmental Concept (4283) LAB NO. G64635-01 Attn: Jon Buck 4400 Ashe Road REPORTED 12/30/93 Suite #206 Bakersfield, CA 93313 SAMPLE Soil RECEIVED 12/16/93 IDENTIFICATION Chico & The Man 231 E. 18th, Bakersfield, CA BASED ON SAMPLE As Submitted B1-20' B1-30' B1-40' Total Hydrocarbons (TPH DHS) (mg/kg) -Gasoline ND< 5 ND< 5 11 Benzene (mg/kg) ND< 0.005 ND< 0.005 0.80 Toluene (mg/kg) ND< 0.005 ND< 0.005 2.0 Ethylbenzene (mg/kg) ND< 0.005 ND< 0.005 0.11 Total Xylenes (8020) (mg/kg) ND< 0.015 ND< 0.015 0.93 Date Analyzed: 12/24 & 27/93 A$SO~IATED~LLA~q~ORIES, by: Vice Prebident ESB/ql NOTE: Unless notified in writing, all samples will be discarded by appropriate disposal protocol 30 days from date reported. TESTING & CONSULTING Chemical · The reports of the ~.ssociated Laboratories are confidential property of our clients and Microbiological · may not be reproduced or used for publication in part or in full without our written permission. This IS for the mutual protection of the public, our clients, and ourselves. EnWronmental · ASSOCIATED LABORATORIES 806 North Batavia-Orange, California 92668-714/771-6900 FF~X 714/5~8-1209 CLIENT Advanced Environmental Concept (4283) LAB NO. G64635-02 Attn: Jon Buck 4400 Ashe Road REPORTED 12/30/93 suite #206 Bakersfield, CA 93313 SAMPLE Soil RECEIVED 12/16/93 IDENTIFICATION Chico & The Man 231 E. 18th, Bakersfield, CA BASED ON SAMPLE As Submitted al-50' B1-55' B1-60' Total Hydrocarbons (TPH DHS) (mg/kg) -Gasoline 13 19 ND< 5 Benzene (mg/kg) ND< 0.005 0.08 ND< 0.005 Toluene (mg/kg) ND< 0.005 0.15 ND< 0.005 Ethylbenzene (mg/kg) ND< 0.005 ND< 0.005 ND< 0.005 Total Xylenes (8020) (mg/kg) ND< 0.015 0.06 ND< 0.015 Date Analyzed: 12/24 & 27/93 ASSOCSATED~~~by:.i~[/t...i!~ Edw~%.--~./_(Beh~, Ph.D. ~ ~ Vic~ Presi'dent ESB/ql NOTE: Unless notified in writing, all samples will be discarded by appropriate disposal protocol 30 days from date reported. TESTING & CONSULTING Chemical · The reports of the Associated Laboratories are confidential property of our clients and Microbiological · may not be reproc~uced or used for puOllcation in part or in full without our written permission. This Is for the mutual protection of the public, our clients, and ourselves. EnWronmental · ASSOCL4 D L4BO R $ Batavia. Orange, Calitornia 92666 - 714/771.6900 FAX 714/$38.1209 FAX 714/$$8-12~ Advanced Environmental Concept (4283) LAB NO. G64635-O3 G64635-04 Attn: Jon Buck 4400 Ashe Road REPORTED 12/30/93 12/30/93 suite #206 Bakersfield, CA 93313 Soil RECEIVED 12/16/93 12/16/93 iATION Chico & The Man 231 E. 18th, Bakersfield, CA ISAMPLE As Submitted B2-15' B2-25' B2-30' B2-45' Hydrocarbons OHS) (rog/kg) 39 ]asoline 4,300 2,600 9,800 ne (mg/kg) ND< 0.005 0.20 45 0.23 ne (mg/kg) 2.2 35 910 2.0 9enzene (mg/kg) 4.3 40 250 0.56 Xylenes (mg/kg) 380 300 1,400 3.4 ~nalyzed: 12/24 & 27/93 ~residen, liscarded Unless notified in writing, all samples will be discarded .e reported. by appropriate disposal protocol 30 days from date reported. TESTING & CONSULTII', TESTING & CONSULTING Chemicc Chemical · Associated Laboratories are confidential orooerty of our clients and Microbiologlcc duced or used for publication in Part or in full without our written Microbiological · Enwronmentc is for the mutual protection of the public, our clients, and ourselves. Environmental . ASSOCiATED LABORAIORIES 806 North Batavia- Orange, California 92668- 714/771-6900 FAX 714/558.1209 CLIENT Advanced Environmental Concept (4283) LAB NO. G64635-05 Attn: Jon Buck 4400 Ashe Road REPORTED 12/30/93 suite #206 Bakersfield, CA 93313 SAMPLE Soil RECEIVED 12/16/93 IDENTIFICATION Chico & The Man 231 E. 18th, Bakersfield, CA BASED ON SAMPLE As Submitted B2-50' B2-55' B2-60' Total Hydrocarbons (TPH DHS) (mg/kg) -Gasoline 4.6 10 15 Benzene (mg/kg) ND< 0.005 0.08 ND< 0.005 Toluene (mg/kg) 0.85 0.02 ND< 0.005 Ethylbenzene (mg/kg) ND< 0.005 0.01 ND< 0.005 Total Xylenes (8020) (mg/kg) 0.20 0.10 ND< 0.015 Date Analyzed: 12/24 & 27/93 A.i.~~,ATED~~~,~~ ORIES, by: Edw~ ' Ph.D~ ~' Vice PreSident ESB/ql NOTE: Unless notified in writing, all samples will be discarded by appropriate, disposal protocol 30 days from date reported. TESTING & CONSULTING Chemical · The reports of the ,~,ssociated Laboratories are confidential orooerty of our clients and Microbiologicol · may not be reDroduced or used for publication in part or in tull without our written permission. This is for the mutual protection of the public, our clients, and ourselves. Environmental · ASSOCIATED LABO RIES 806 North Batavia-Orange, California 92668-714/771-6900 FAX 714/538-1209 CLIENT Advanced Environmental Concept (4283) LAB NO. G64635-06 Attn: Jon Buck 4400 Ashe Road REPORTED 12/30/93 Suite #206 Bakersfield, CA 93313 SAMPLE Soil RECEIVED 12/16/93 IDENTIFICATION Chico & The Man 231 E. 18th, Bakersfield, CA BASED ON SAMPLE As Submitted B3-20' B3-30' B4-30' Total Hydrocarbons (TPH DHS) (mg/kg) -Gasoline 42 2,700 70 Benzene (mg/kg) ND< 0.005 12 0.11 Toluene (mg/kg) ND< 0.005 200 1.5 Ethylbenzene (mg/kg) ND< 0.005 56 1.3 Total Xylenes (8020) (mg/kg) ND< 0.015 340 4.4 Date Analyzed: 12/24 & 27/93 AS$OC~AT~<~~TORIES, by: Ed ~ ."~" B h.D_ Vice President ESB/ql NOTE: Unless notified in writing, all samples will be discarded by appropriate disposal protocol 30 days from date reported. TESTING & CONSULTING Chemical · The reports of the Associated Laboratories are confidential property of our clients and Microbiological · may not be reproduced or used for publication in part or in full without our written permission. This Is for the mutual protection of the public, our clients, and ourselves. EnWronmental · ASSOCiATED LABORAIORIES 806 North Batavia-Orange, California 92668. 714/771-6900 FAX 714/558-1209 CLIENT Advanced Environmental Concept (4283) LAB NO. G64635-07 Attn: Jon Buck 4400 Ashe Road REPORTED 12/30/93 Suite #206 Bakersfield, CA 93313 SAMPLE Soil RECEIVED 12/16/93 IDENTIFICATION Chico & The Man 231 E. lSth, Bakersfield, CA BASED ON SAMPLE As Submitted B4-50' B4-60' Total Hydrocarbons (TPH DHS) (mg/kg) -Gasoline 16 ].7 Benzene (mg/kg) ND< 0.005 0.02 Toluene (mg/kg) 0.61 0.10 Etbylbenzene (mg/kg? ND< 0.005 0.02 Total Xylene$ (802u) (mg/kg) 0.039 0.16 Date Analyze,~: 12/~.t & 27/92 A S{;O C,~ AT E~I. A~. I{~TOR I ES, Vice Pretident ESB/ql NOTE: Unless notified in %,.,~Jting, all samples will be discarded by appropriate disposal protocol 30 days from date reported. TESTING & CONSULTING Chemical · -[he reports of the ~ssociated Laboratories are confidential property of our clients and Microbiologicol · may not be reproduced or used for publication in part or in full without our written permission. This iS for the mutual protection of the public, our clients, and ourselves. Enwronmentol · I~[SSOCIATED LABORATORI~ · COMMITMENT TO QUALITY ° QUALITY CONTROL/QUALITY ASSURANCE REPORT G64635 QA/QC CONTROL NO. G64689 INSTRUMENT LOGBOOK Hyd 1-6 DATE G64689 ANALYZED Dec 23 1993 I.L.B. PAGE LOCATION 53 DATE G64635 ANALYZED Jun 23 1993 SAMPLE LOG PAGE LOCATION 35 [ EPA 8020 REPORTING UNITS mg/kg SAMPLE MATRIX soil COMPOUND SR SR1 RPD S.A. SSR SSRI %RE %REI RPD BLK BENZENE 0 0 0 0.05 0.054 0.046 108 92 16 0 E TH YLBENZENE 0 0 0 O. 05 O. 052 O. 048 104 96 8. 8 0 XYLENES 0 0 0 O. 15 O. 16 O. 149 107 99 7. 8 0 CHLOROBENZENE· 1,2-DICHLOROBENZENE 1,3-DICHLOROBENZENE 1 ;4-DICHLOROBENZENE SR ....... SAMPLE SRI ..... SAMPLE DUPLICATE RPD---- RELATIVE PERCENT DIFFERENCE S.A.---- ANALYTE SPIKE IN SAMPLE MATRIX SSR ..... SPIKE RECOVERED AND SAMPLE 'SR' SSR I .... SPIKE RECOVERED AND SAMPLE 'SR I' ~.RE .... PERCENT RECOVERY OF SPIKE IN 'SR' %REI--- PERCENT RECOVERY OF SPIKE IN 'SRI' BLK ..... ANALYTE CONCENTRATION DETECTED IN LAB BLANK 99% ..... UPPER/LOWER CONTROL LIMI'F 95% ..... UPPER/LOWER WARNING LIMFF s .......... STANDARD DEVIATION 2s ........ 2 x STANDARD DEVIATION 0,VARNING LIMIT) 3s ........ 3 x STANDARD DEVIATION (CONTROL LIMIT) MEAN-- TIME WEIGHTED AVERAGE OF SPIKE RECOVERY SURROGATE SPIKE DATE BENZENYL FLUORIDE SPIKE CONCENTRATION OF 150 ng WITH A RECOVERY OF 79 · BENZENYL FLUORIDE RECOVERY LIMITSOPIII % TO 129 % PASS / NO PASS J/~_/')~ DATE TYPED Dec 29 1993 AI33201 ACTION TAKEN SPIKE SOURCE EPA Repository Dil. STANDARD LOT NO. BTX 40893 ANALYST Rick Conn QA / QC COMPILER tSSOCIATED LABORATORI · COMMITMENT TO QUALff~ ' QUALITY CONTROL/QUALITY ASSURANCE REPORT G64635 QA/QC CONTROL NO. G64689 INSTRUMENT LOGBOOK Hyd I-6 DATE G64689 ANALYZED Dec 23 1993 I.L.B. PAGE LOCATION 53 DATE G64635 ANALYZED Dec 23 1993 SAMPLE LOG PAGE LOCATION 35 [ EPA 8015M/D.H.S.L.U.F.T. REPORTIN~ UNITS mg/kg SAMPLE MATRIX soil ] COMPOUND SR 8RI RPD S.A. SSR SSRI %RE %REI RPD BLK ' GASOLINE 0 0 0 5 5.4 5. 7 108 114 5 0 DIESEL ........ ..... -. .i......... · i....'.: SR ....... SAMPLE X O SRI ..... SAMPLE DUPLICATE RPD---- RELATIVE PERCENT DIFFERENCE S.A.--- ANALYTE SPIKE IN SAMPLE MATRIX SSR ..... SPIKE RECOVERED AND SAMPLE 'SR' SSRI .... SPIKE RECOVERED AND SAMPLE 'SRI' %RE--- PERCENT RECOVERY OF SPIKE eJ, REI--- PERCENT RECOVERY OF SPIKE IN 'SRi' BLK .... ANALYTE CONCENTRATION DETECrrED IN LAB BLANK 99% ..... UPPER/LOWER CONTROL LIMIT 95'~ ...... UPPER/LOWER WARNING LIMrr s ......... STANDARD DEVIATION 2s ....... 2 x STANDARD DEVIATION (WARNING LIMIT) 3s ........ 3 x STANDARD DEVIATION (CONTROL LIMIT) MEAN-- TIME WEIGHTED AVERAGE OF SPIKE RECOVERY SURROGATE SPIKE DATE BENZENYL FLUORIDE SPIKE CONCENTRATION OF WITH A RECOVERY OF BENZENYL FLUORIDE RECOVERY LIMITS OF TO PASS / NO PASS ~//JO DATE TYPED Dec 29 1993 BI33201 ACTION TAKEN/I SPIKE SOURCE SH-R STANDARD LOT NO. Gas 52093 ANALYST Danielle Luian QA / QC COMPILER /Y/'~/O CHAIN-OF-CUSTODY RECORD , Clien~ Proj~:~# Turn Around R~uest~: ~ ~b Use Only. ~s Sig~ ~ ..~ ~ e ~ ~ ~ Y~ / No . .~ ...~_,..,.., ~.~,zm,~.c,, ... ~!- ~o~ ~ ?. zO ~ 1- 5~/ '"1 G ~ Y ~I'-~o~ ~.~ lo'Ob ~-~o 'l I~ :1~ AnalYsis Requested p~e ~b use OnlY. S~pte Co~iti~ as r~: Turn Around R~ue~ed: Chitt~ ye I No s~ted y~ i No ~ 24-H~'Rus~ II Total Number o! contalnel t ) Date ~ NTAL coNCEf Date N~ccED qfloNMt: Timeature) · k~ EN~~ ~E 'V' Street Bakersfield, CA 93304 (805) 327-0671 (805) 324-4218 FAX & Associates ......... --April 14, 1994 Mr. Gene Bolton Post Office Box 11324 Midland, Texas 79702 SUBJECT: Remediation of Soil 231 East 18th Street Bakersfield, California Dear Mr. Bolton: BSK & Associates (BSK) has evaluated options to remediate approximately 6,300 cubic yards of soil containing gasoline at the above-referenced site in Bakersfield, California. Remediation options for soils containing'gasoline include ex-sim and in-sim methods. Soil excavation (ex-sim treatmen0 is effective for most soils and petroleum hydrocarbons. Excavation is generally limited to depths of 25 feet and can be further limited by site development and site operations. Extent of attainable cleanup is usually more predictable and more likely to be complete. Remediation usually requires shorter time periods and is time- dependant on the type of surface treatment selected (i.e. off-haul, recycling, or controlled on-site aeration). Environmental impact and site disturbance can be substantial, including risk of chemical exposure and physical cor~tact with chemicals. The potential for damage to nearby structures and other site features can be high. Costs for ex-sim treatment of hydrocarbons in soil deeper than 25 feet are typically high and can approach one million dollars depending on site-specific conditions. In-sim remedial methods include bioremediation, vapor extraction, and bioventing. In-situ methods are generally effective in permeable soil types (i.e. sand and sand silt mixtures) and are not limited by depth or by site development. Site operations are usually only minimally interrupted by system installation and maintenance tasks. Extent of attainable cleanup often varies depending on soil types and type of contaminant and is generally not entirely complete. In-sim methods require long periods of time (on the order of several years) in comparison to ex- situ treatment. Environmenfal impact and site disturbance are usually minimal. Short-term liabilities are minimal. Long-term liabilities may result from incomplete reduction. Costs associated with in-sim methods are generally substantially less in comparison to ex-sim methods. Geotechnical Engineering · Engineering Geology · Environmental Services · Construction Inspection & Testing · Analytical Testinc R~mediation of Soil April 14, 1994 231 East 18th Street Page 2 Bakersfield, California Results of BSK's informal feasibility study and our review of available site information and site characterization reports indicate that the site is suitable for in-situ remediation. BSK is looking forward to working with you on this project. If you choose to select BSK as your remediation contractor, we would be pleased to meet with you to discuss a project scope and negotiate a contract. We appreciate the opportunity to propose an alternative for remediation of your site. If you have questions or require additional information, please contact our Bakersfield office. Respectfully submitted, BSK & Associates Bruce M. Blythe Project Geologist BMB/ds "V" Street Bakersfield, CA 93304 (805) 327-0671 (805) 324-4218 FAX & Associates April 15, 1994 PROPOSAL BP94053 Mr. Gene Bolton Post Office Box 11324 Midland, Texas 79702 SUBJECT: Proposal and Fee Estimate Remediation of Soil 231 East 18th Street Dear Mr. Bolton: BSK & Associates (BSK) is pleased to present our proposal for soil remediation at the former Chico and the Man service station site in Bakersfield, California. Information concerning the site was obtained from our review of the Environmental Assessment Report prepared by Advanced Environmental Concepts dated January 1994. The site is presently a vacant, commercially zoned, parcel at the southwest corner of East 18th and Sonora Streets. Gasoline product originating from leaking USTs has migrated to an approximate depth of 45 feet and extends laterally for a distance of 20 to 30 feet from the source point. Known maximum concentration of gasoline in soil is 14,000 ppm. Maximum known benzene concentration is 120 ppm. Gasoline migration reportedly extends in an eastwardly direction into the right-of-way of Sonora Street. Subsurface soils are granular ranging from poorly graded sand to silty sand. Groundwater is reported to occur at, a depth of 200 feet in the vicinity of the site. Two options for soil remediation are presented for your consideration. OPTION A - BIOVENTING Fuels such as gasoline are well-suited for Bioventing treatment. Bioventing biodegrades petroleum hydrocarbons through the stimulation of indigenous bacteria which are present in nearly all natural soils. To increase hydrocarbon degradation rates, environmental conditions within the soil are optimized by introducing oxygen into the impacted soil zone. Through their metabolic processes,, bacteria works to reduce hydrocarbon levels in soil. By limiting air emissions through reinjecting,into the soil and limiting the clean air influx rate to the minimum flow needed to promote biodegradation, the need for air emission control is avoided or greatly reduced. Geotechnical Engineering · Engineering Geology · Environmental Services · Construction Inspection & Testing · Analytical Testing Proposal and Fee Estimate Proposal BP94053 Remediation of Soil April 15, 1994 231 East 18th Street Enclosure 1 - Page 1 SUMMARY OF ESTIMATED FEES SOIL REMEDIATION 231 EAST 18TH STREET OPTION A - BIOVENTING CAPITAL COSTS Governmental Permits: $ 500 Pilot Study: 5,000 Well-Field and Equipment Installation: 20,000 Progress and Post-Operation Assessments and Closure: 15,000 Project Management, Plans, Engineering, Permitting and Reporting: 25.000 Estimated Total: $ 65,500 MONTFILY EXPENSES Equipment Rental: $ 500 Electricity: 350-500 Sampling and Maintenance: 750 Estimated Monthly Total: $1,600-1,750 Proposal and Fee Estim,.,e . Proposal IGP94053 Remediation of Soil April 15, 199,* 231 East 18th Street Page 2 Scope of Services Qption A o Preparation of Remedial Action Plan specific to the proposed scope of work for submittal to the KCEHSD o Obtaining required permits o Drilling, sampling and logging soil borings and construction of extraction wells o Submitting selected soil samples to BSK Analytical Laboratories for analyses of Total Petroleum Hydrocarbons as gasoline and BTEX o Underground piping, including trenching, materials, valves,.fittings, electrical and labor (electricity connection to be provided by client) o Equipment and equipment installation, including skid mounted blower o Pilot Testing commensurate with system startup o Operations and maintenance including monthly sampling and analyses o Remedial-progress assessment, including drilling, confirmation sampling, chemical analyses, and progress reporting o Post-operation drilling, confirmation sampling and chemical analyses, well closure, piping removal and grouting o Project management, engineering design, and final reporting Estimated Fees Option A - Estimated cost for the scope of services described would be approximately $65,500 and monthly operating costs would range from $1,600 to $1,750 per month. A Summary of Estimated Fees is attached. OPTION B - VAPOR EXTRACTION Vapor Extraction involves the removal of gasoline vapors from subsurface soils by mechanically drawing or venting air through the soil matrix. Vapors brought to the surface may be treated through a thermal oxidizer eguipped with a catalytic module. Gasoline concentrations in soil are reduced to carbon dioxide which can be safely emitted to the atmosphere. This alternative would require the construction of extraction wells and the installation of a transportable vapor extraction and thermal oxidation unit. & Asso~ hit' Proposal and Fee Estimate Proposal BP9S~053 Remediation of Soil April 15, 1994 231 East 18th Street Page 3 Scope of.Services Option B o Preparation of a Remedial Action Plan specific to the proposed scope of work o Obtaining required permits o Drilling, sampling and logging soil borings and construction of extraction wells o Submitting selected soil samples to BSK Analytical Laboratories for analyses of Total Petroleum Hydrocarbons as gasoline and BTEX o Underground piping, including trenching, materials, valves, fittings, electrical, and labor o Equipment and equipment installation, including thermal oxidizer unit o Electrical and natural gas hookups for the thermal oxidizer unit (electricity and natural gas connections to be provided by ellen0 o Pilot Testing commensurate with system startup o Operation and maintenance including monthly sampling for air pollution control requirements (if required) o Remedial progress assessment, including drilling, confirmation sampling, chemical analysis, and progress reporting. o Post-operation drilling, confirmation sampling and chemical analyses, well closure, piping removal and grouting o Project management, engineering design, and final reporting Estimated Fees Option B - Estimated cost for the scope of services described would be approximately $81,000 and monthly operating costs would range from $5,750 to $6,000 per month. A Summary of Estimated Fees is attached. BSK & Associates Enclosure: Summary of Estimated Fees Proposal and Fee Estim~.~e Proposal BP94053 Remediation of Soil April 15, 1994 231 East 18th Street Enclosure 1 - Page 2 SUMMARY OF ESTIMATED FEES SOIL REMEDIATION -- 231 EAST 18TH STREET OPTION B - VAPOR EXTRACTION CAPITAL COSTS Governmental Permits: $ 500 Pilot Study: 5,000 Well-Field and Equipment Installation: 30,000 Progress and Post-Operation Assessments and Closure: 20,000 Project Management, Plans, Engineering, Permitting and Reporting: 25,000 Estimated Total: $ 80,850 MONTHLY EXPENSES Equipment Rental: $ 2,500 Electricity and Natural Gas: 750-1,000 Sampling and Maintenance: ' 2,500 Estimated Monthly Total: $5,750-6,000 ENVIRONMENTAL HEALTH S,--RII~ES~ DEPARTMENT . .~3URCE~ MANAGEMENT AGENCY STEVE McCALLEY, R.E.H.S., Director DA ViD PRICE III, RMA DIRECTOR 2700"M" STREET, SUITE 300 ~ Engineering & Survey Servk~a Department BAKERSFIELD, CA 9:)301 ~ Envtronrnental Health Sewi~ea Department Phone: (805) 862-8700 Planning Department FAX:(805) 862.8701 Roads Department April 29, 1996 Gene Bolton Pro-Tech Specialties P. O. Box 11324 Midland, TX 79702 SUBJECT: Location : 231 E. 18th Street, Bakersfield, CA Known As : Chico & the Man Permit # : 150040 Dear Mr. Bolton: '- This letter confLrrns the completion of site investigation and remedial action at the above site. With the provision that the information provided to this agency was accurate and representative of existing conditions, it is the position of this office that no further action is required at this time. Please be advised that this letter does not relieve you of any liability under the California Health and Safety Code or Water Code for past, present, or future operations at the site. Further, it does not relieve you of the responsibility to clean up existing, additional, or previously unidentified conditions at the site which cause or threaten to caUSe pollution or nuisance or otherwise pose a threat to water quality or public health. Additionally, be advised that changes in the present or proposed use of the site may require further site characterization and mitigation activity. It is the property owner's responsibility to notify this agency of any changes in report content, future contamination f'mdings, or site usage. If you have any questions regarding this matter, please contact Dan Starkey at (805) 862-8757. Environmental Health Serv~artmenC- DS:cas cc: A E C Regional Water Quality Control Board colt\150040.b , R.4M' ~,.rt ~.:S ~'clb¢om'r~c'mrs ,,vi~] perform al~ work ~n ~ lxo:%Ss!o,al a~d c'o~[ Oh. rain itl pem~it~ rcq~t~ by' the m~ulamK,., ~encics; · Prepare and s~bmit to the Kern County Iinvtronment~ Heahh 8e~{c¢$ ~pmmeni t. KCEHSD) a Reme~al Ac;ion W~k ~.n an~ tI~ a~d 8afc~ Plan for ~ , l'n~mil t.h..ree ;'ado:~e zone ,.,.,ells in order to conduct a pJlo{; test; ,,'sdo~e v,.e wells. (.:k,.st * 4.,,,,~ includes the ..... s ..... ~ o...~, of two add. i~o~al w¢lB for a to.tat of Eve. Any additional wella need, d will increase costs: . Soil s~_mples wi.L! be coll:.';teg every five feet la alt well bo~.,,=s, ~u :ue:4cnoed in it'~:c c:~Jfied laberaco,w for analysis of TotM Pe,,m:um H:-ds'c.<'.aroons ~.-t.~ ,,...i k~,,,.,,,,,, tek'eno,--""-'.,~ k ........ ,, znd. xylcne: · :nsell and mair~tain a val.',or exu'acdon unit for a period (;f :4 mon..'hs; , Collect vapor s~mp!es from the '.'aFor '" ~ '" .. b-moethty h.,bora;o,'.'y anal)..~ ~ fo...' a ped~ no.'. to exceed s!x motlths; , DisposM of ail drill cartings ?.o ,'.he ap.~ropri'a~.e dSSl:,OSt'd facility; , Repons wt:l bc prep~,,~ t;..,a:I.,g obsen'ag0n.~ ri:adc in d~-¢ fiald ii:'~d mSh!.tS of ....... rlm,t e'/e-r7 two lsao::tl:s. A e...., mpo~ will ' .=m~ be prepared ~: the ¢.nd of tho :n ,mb c',¢.riod lhat ,fictM.!s -:..21 e-~.I,4 work, .-- ,','-- ae. alvsls m;..'.u}:3, coqclusion~ and -,.~ '"' '~ 'F"' " " RAM, . .~fides i~se:f o,,... ,.----~':h'~'";""' ~...,,~""f' ~.,,'~" !:a~. w<-.,rkcd., irt :~,.'he. r~gula'~.or7, ~'~"~,,,.,~ ~c~li:~g with r-o ,*dc t,q ' ;"-" ~: '3.,OT-~. '.hK~C, V ' ' u:id¢.rg[<,ui:M <:,',:'al,' rank .c.,ut,.,.o ..... ~is ~xpenerl<,:e.. ~J.,._.,,,. n;:, cozr:loany m ' ' ~'~" the K,...r:,:-~b ,a t,",.. :Jet¢,m,'.n¢ t~-,,.,,., mos: ck?~-t.~Sccm.'¢ ~..ad efr~cie,nt me:had:s to soz.,,e ~";...,.....,,, p,':;hie.. . .7._'.,3. If vou ha:..: -an7 que~d::m:i ..... · , . . re..:a~.,,,~ the.. $C:vp¢ Of V, rc)rk <3r Cc)st E'~tinri~:¢, p:~. :,:< ,:ali ..,,'"' t,:a.a=~ ,.n..,¢, at (805) 3:2.,5 UNDERGROUND STORAGE TANK UNAUTHORIZED RELEASE (LEAK) / CO ..... AMINATION SITE REPORT N~E OF INDtV~U~ FILING R~ORT I PHONE / SIGNA~RE / /- j , C~ ~A~ ZIP I ~NT~ PERSON NAME PHONE ADDRESS FAClLI~ N~E (IF ~PLICAB~ OPE~TOR ~ PHONE ADDRESS CRO~ STREET L~AL AGENCY AGENCY ~E ~NT~T PERSON pH~E REG~N~ BOARD PH~E (11 NAME OUANTI~ LOST (mLLONSi UNKNOWN ~ UNKNOWN DA~ DI~VERED ~ HOWDIS~VERED ~ INVENTORY ~NTR~ ~ SU~URFACE MONITORING ~ NUIS~CE CONDITIONS DA~ DIVERGE BE~N M~OD'USED TO STOP DISCHARGE (CHECK ~L ~AT APPL~ HAS D~C~R~ BEEN STOPP~ ? ~ REPAIR TANK ~ CLOSE TANK & FILL IN P~CE ~ CHANGE PR~EDURE ~ YES ~ NO ,FYES. DA~ O.! '7~ O,IT, ~YI ~ Y ~REP~CETANK ~OTHER SOURCE OF DIVERGE CAUSE(S) ~ PIPING~K ~ GTE. ~ ~..OS,ON ~ UNKNOWN ~ O~ER CHECK ONE ONLY ~ UNDERMINED ~ SOIL ONLY ~ GROUNDWATER ~ DRINKING WATER - (CHECK ONLY IF WATER WELLS HA~ AC~ALLY BEEN A~EC~D) CHECK ONE ONLY ~ NOAC~ONTA~N ~ PR~IMINARYS~A~E~MENT~RK~NSUBMI~ED ~ POLLUTIONCHARAC~RI~TION ~ LE~ BEI~ ~NFIRMED ~ PRELIMINARY SI~ ~ESSMENT UNDERWAY ~ POST CLE~UP MONITORING IN PROGRE~ ~ REMEDIATION P~N ~ CASE CL~ED(CLE~UP~MPLE~DOR UNNECE~AR~ ~ CLE~UP UNDERWAY CHECK APPROPRIATE ACTION(S) ~ EXCAVA~ & DISUSE (ED) ~ REMOVE FREE PRODUCT (FP) ~ ENH~CED alO DEG~DAT~N (1~ ~ C~ S~ (CD) ~ EXCAVATE & TREAT (E~ ~ PUMP & TREAT GROUNDWA~R (G~ ~ RE.CE SUPPLY (R~ ~ ~NTAINMENT BARRIER (CB) ~ NOACT~NREOUIRED(NA) ~ TREAmENTATH~P(HU) ~ VENTmlL~S) ~ VACUUM EXTRACT ~a ~ OTHER (0~ ~,ADVANCED ENVIRONMENTAL CONCEPTS-dhlC ~, Gene go,tar. O. Box 1'~ 324 ':" ' Mid.and. TX 79702 ' The r.m;~oo! oo~ or~d ~?n~ ~F~'l~ fo/~k~ reme~i~i~oq via v~r ex~c~oiion ul'i4zin~ reg~r~rafive · Perm !t'f;ng i rr?nlfohJJng, .soc:urlty er~closdre 40.20;2.00 ~, RT~~. doit (mon!h. iy 'enfc~i-~ monfhs at jS4,000/monfh) 30 030 0'3 I o M nt;",k' rna~ntenanc¢ and sampling ,..¢00 ~,.; D T'.v~ c;c, nfim:-,atior, ~Orir'~O,~ 2.C~00.6,0 (5~-fee~ each} 3.~00.00 V -qmo! Re~rt (lqoluding mo:~:.t,~r,r,g data, cJrsio, or~d c:ord~rh',olory progrom~ 4,500.00 t De Ir:'/o~ceo on a ~c;hth;y ~sJs, 'fhctnk you for ....r .... ' ~.. , n~, hesitate to ~*-~,a~ our off~ce at hove ¢,¢,y quest}on~, o!e~se do ~+ .............. Sincerely. AcNanc~d Env!ronmen1~l C~ncepts. Inc. ~sider, t T,lh~ am___.O'v'r¢ p~r)C'~ :.ll~d ~C:'fir'~Qf:'~Pr'~ Clr~ .*Oh?ccO/Ory .~r',d Qr~ ':,6,,¢.'~, .... S,~i._ ,l~$$,,.,"l Of en,,,Irohm~:'no; ~,~[:.>orl b¢~,.,,uk..' '"" t,D Ol:6r;t, Dote at Acce?,tonce ..................... .>,gr oture S'igr',alu~e: 150040 Chico & The Man Station 231 E. 19th St., Bak. 5 Contract AEC 831-1646 Status : Case Closed Est TOC: 5-96 Grndwtr: No groundwater contamination Comment= VES application being sent to SQVAPCD. Facility receiving funds from the state. Case was inactive for many years because of RP's financial problems. 9-6-95 No information received. 12-28-95 At site VES system operating. 3-6-96 Reviewed closure workplan and drafted letter of approval. Workplan states that VES system has stabilized and levels of contamination are low. Submitted closure s~mmery to RWQCB. 4-23-96 Reviewed conformation boring assessment report. Drafted closure letter. ;ALIFORNIA - CALIFORNIA ENVIRONr? rAL PROTECTION AGENCY PETE WILSON, Governor · VATER RESOURCES CONTROL BOARD OF CLEAN WATER PROGRAMS T~.ET, SUITE 130 ., JUL 1 2 .NTO, CALIFORNIA 04244-2120 ~27-4307 ~27-4530 (FAX) ;irginia Nielsen Box 11324 ~d, TX 79702 ~ROUND STORAGE TANK CLEANUP FUND PROGRAM, NO RESPONSE TO LETTER OF I%~ENT (LOC): CLAIM NUMBER 000071; FOR SITE ADDRESS: 231 E. 18th ~, Bakersfield, CA ~ come to my attention that the LOC issued to you on January 10, 1994 9 amount of $20,000 has not been responded to with a request for ursement. 9 submit your reimbursement request with all of the required ~ting documentation, or a written explanation as to the status of the up and. why you have not requested reimbursement to date. If a request equate explanation is not received within thirty (30) calendar days the date of this letter, I will take steps to begin the withdrawal ss of your LOC. e send your reimbursement request or explanation to: State Water Resources Control Board Division of Clean Water Programs Underground Storage Tank Cleanup Fund Program Attention: Lydia Bra¢co Claim No. 000071 P.~O. Box 944212 Sacramento, CA 94244-2120 u have any questions, please contact Pamela Rarick at (916) 227-4516. Bracco, Team Leader, Region 5 "ground Storage Tank Cleanup Fund Kern County EHD Attn: Joe Canas i2700 M Street, Suite 300 Bakersfield, CA 93301 " : CONCEPTS iNC' .AOVANCED ENVIRONMENTAL '- :.:,- .._-: :.:.=,= ~2:": ' .:.'.~:=~:E=C '2,,::. c:33'.~' - STATE OF CALIFORNIA - CALIFORNIA ENVIRONM'~'TAL PROTECTION AGENCY PETE WILSON, Governor BOARD , 2014 T STREET, SUITE 130 P.O. BOX 944212 SACRAMENTO, CALIFORNIA 94244-2120 (916)227-4307 '$EP 7 l~g4 (916}227-4530 {FAX) Mrs. Virgin~ielsen p. alSd, TX 79702 UNDERGROUND STORAGE TANK CLEANUP FUND PROGRAM, NOTICE OF PROPOSED WITHDRAWAL OF LETTER OF COMMITMENT, CLAIM NUMBER 000071 SITE ADDRESS: 231 E. 18th St., Bakersfield, CA A Letter of Commitment (LOC) was issued to you on January 10, 1994. Pursuant to its terms and conditions, an LOC may be withdrawn at any time if the claimant is found to be not in compliance with any applicable state rules and regulations, and with all of the terms, conditions, and commitments contained in the claimant's application. This letter is to notify you that the Underground Storage Tank Cleanup Fund 'is proposing to withdraw your LOC for the following reason(s): On July 12, 1994, a letter entitled "No Response to Letter of Commitment" was sent to you. You were given thirty (30) calendar days from the date of the letter to submit your reimbursement request with all of the required supporting documentation, or a written explanation as to the status of the cleanup and why you have not-requested reimbursement. To date, we have not received a response from you. If you are not in agreement with this decision, you may request a review of the decision by the Manager of the Underground Storage Tank Cleanup Fund Program within thirty (30) calendar days of the date of this Notice. Please send any request for review to: Mr. Dave Deaner, Manager Underground Storage Tank Cleanup Fund Program State Water Resources Control Board Division of Clean Water Programs P. O. Box 944212 Sacramento, CA 94244-2120 If a request for review of this decision is not received within thirty (30) calendar days of the date of this notice, your LOC will be withdrawn. If you have any questions, please contact me at (916) 227-4374. ely~ , Team Leader Region 5 Underground Storage Tank Cleanup Fund ' ':::::.' ' cc: Kern County EHD Attn: Joe Can'as 2700 M Street, Suite 300 .... Bakersfield, CA 93301 /ffil · ADVANCED ENVIRONMENTAL CONCEPTS INC=' September 22, 4994 "" =''' "' Ms. Flora Darling Hazardous Materials Specialist Kern County Environmental Health Services Department 2700 "M" Street, Suite 300 Bakersfield, California 93304 RE: Reply tor,,_,,-,""'ct~"~,,~, request for additional information regarding the Chico & The Man Site, KCEHSD Site #450040. Dear Ms. Darling, Please find below the additional information you requested regarding the remedial action activities at the above stated facility. The information will be listed in the order that it was requested in the KCEHSD lefter dated August 30, 4994. Radius of influence can be calculated using the following parameters: 4. flow rate 2. permeability 3. screened interval 4. change in pressure 5. viscosity of gas 6. temperature of gas 7. compressibility of gas 8. well radius When these parameters are held constant and solved for effective radius of influence for a range of permeability values the result is radius of influence distances from 49 to 440 feet. These results are presented in Table I. TABLE t EFFECTIVE RADIUS PERMEABILITY RADIUS [in darcys] [in feet] 40 440 9 74 8 36 '7 49 · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND 4400 ASHE ROAD, #206 · BAKERSFIELD. CAg3313 805/831-1646 · FAXS05/831-1771 Ms. Flora Darling Advanced Environmental Concepts, Inc. Chico & The Man Page Two AEC has measured influence distances in excess of 55 feet at other sites in Kern County that have soil types similar to those found at the Chico & The Man site. AEC estimates that influence radii at the subject site would be between 40 and 90 feet. Once vadose wells are installed at the site the communication between wells will be measured and placement and/or addition of subsequent wells adjusted accordingly. The physical measuring of well communication will be accomplished by inducing a vacuum on the vapor extraction well network using a 250 cfm vacuum pump. The vacuum will be isolated on one individual well while measuring the effect on another well using a Merium U-Tube Manometer. 2. The estimated time iequlred to achieve the cleanup goals of 4/50150150 and '1000 ppm for BTEX and TPH-g, respectively is one year. The method AEC proposes to use to demonstrate that these goals have been achieved is conformation soil borings. Location, number and sample points will be submitted to KCEHSD for approval prior to commencement of the activities. 3. The total impacted area at the subject site is approximately 37,073 cubic feet. This area can be divided into two distinct sub-areas, that less than 4000 ppm and that greater than '1000ppm with approximate volumes of 24,980 and '12,093 cubic feet, respectively. To determine the gallons of product present in the impacted area average hydrocarbon concentrations of 6400 ppm for the greater than 4000 ppm area and 400 ppm for the less than 4000 ppm area were used. These average concentrations result in estimated gasoline quantities of '1450 and 200 gallons in the greater than '1000 ppm and less than '1000 ppm plume areas, respectively. 4. Monitoring of the cleanup activities will be performed by collecting influent and effluent air samples from the vapor extraction machine and submitting them to a laboratory for analysis of TPH-g and BTEX. The frequency of this sampling will be weekly for the first month and monthly after that. In addition to the air sampling the influent will be measured with a Gastech GT302 LEL meter for hydrocarbon and oxygen levels. This testing method will be performed daily for the first two weeks then weekly there after. If you should require additional information, please do not hesitate to contact our office at 834- 4646. Sincerely, Advanced Environmental Concepts, Inc. //~oseC)h'A. '"D~n,~,oody?,ll/_ // // Registered Geologist~5504 cc: Mr. Gene Bolton LetrZ 1 Z · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND Mrs. Virginia Neilson June 19, 1990 Page 2 discharge, dispersal, release or escape is sudden and accidental; 7) Coverage does not apply to liability arising out of damage tO property owned, occupied, rented, or used by the insured or to property in the care, custody or control of the insured or as to which the insured exercised physical control for any purpose; 8) Coverage does not apply to any alleged property damage which is caused to work performed by or on behalf of the insured, arising out of the work or any portion thereof, or ou%-~of materials, parts, or equipment furnished in connection therewith; 9) Coverage does not apply to liabilities arising out of the acts or omissions of any individual or organization other than those individuals or organizations described as "Named Insured" or Persons Insured" in the policies; 10) Any payments that might be made by Transamerica in this case are subject to the applicable limits of liability and/or deductibles as contained in the policy; 11) Coverage does not apply if the insured failed to provide notice to Transamerica in accordance with the conditions of the policy; 12) Coverage does not apply to any voluntary payment, assumed obligation or incurred expense other than for first aid to others at the time of any accident or occurrence; 13) In accordance with the assignment condition of the policy, coverage is not afforded for any person or entity whose interest in the · .policy is secured without the written consent of Transamerica; and 14) Should Transamerica assert and prevail on any of the reservations set forth herein, it does not waive its rights, if any, to seek reimbursement for any, indemnity or other payments made to you or on your behalf in connection with the captioned matter. As this matter develops further, you will be advised of any additional legal principles or policy provisions which might limit the indemnity obligations which Transamerica has undertaken or will undertake. It is my understanding that your property was leased to Chet Candelaria and he operated a gas station for several years. Mr. Candelaria has advised his insurance carrier, Sequoia Insurance, of this matter and I anticipate that they will also conduct a similar investigation into this matter. By copy of this letter to the Clifford Bradford Agency, I ask that Ms. Jan Woodin please forward the address of Mr. Ed Noriega. iNSURANCE GROUP June 19, ~990 ~r4n~:m~er~ ~001 S~i__ Nlel~on Olov~.; 'Z~r ~venue m,,,,~L,na ~.,, ~°ltCYhOlde~: ~ans ~ Vt wear ~s. Nt-- ~ced at 231 ~ AS u... ~son. ~th St., Bake~Sfiel~ health Se~.'~=u, I note ~'~,~ea Site. nc=d an inv · _.. charact ~zces has .,~u the Ke In my rev' e~tlgat~o on ~N_ erization_ =_re~ested ~.~rn Countu n_ lew of the -, n. ~co the -"= propert,. [ ~easlbili,.. --~c the re_~ ~ePartmen~ _~ uxa~ tha* - ~ ~s ini,4-~ ~ study =.~ ~pOnSibl. _ ~ ur Envi~-~ ~ YOu ~= any work The insuring agreement of t ~r~© defend any s-'- hese ~o.~ . Y Or r Ult a · ~ ~Cles . contemD. P operty d-- ga~nst th~ _ PrOVadeo ~. aCCOrds._, uy the ~__~ ' ~Uch = ~ '~ynOlde~ __ i' une c fees _?..~ay, Trans._~=neral liak:, ~ request d--' seeking d-- Ompany has ~ yo~ may ~_ ~erica w~, ~AA~ty no-: . wes not .__ ~ages f~_ . ~ --c~ in -=. '~ not r_~'-. ~Cles is-- ~unstitut_ ~ oOdilv un~S matte- =~Urse ~_ ~ued by T--- = a suit ~. a ~less a.~ ur ~ay for--~nS~eric~ We Will Continue Our investigation "~ ~til SUch ~aY-of the 1~' - a suit i- ' .gal 1) Coverage does not a~ply to S~ject to the fOllowing incurred ~ ~n~tiated. in CO~ection with costs alleged t reSe~ati°ns 2) In accordance any cla~. ~ o have ~_ : ...COVe=age ~ with ~oli -"' ~or e~itah~en or to be alleged o~_not applyI Pr?~Sion, a . ~'~ relief; ~eCOVered in ~_Punltive d nf-appl~cabl - 3) Coverage does th= caption.~a~es, fin..e c~se law not co~..~ not apDl.. ~ ..=u ~atter; o or Denalt~es is no* 'j~xng Which ~ch take _ ' policies; ~__ ' UOVered = Trana~e~_ s ~lace ._ '~anS~er~._ . uY the n~l~_~~ua Provia_=P~lor and .... =.uPe=tv ~__n_=~ no ob~- 7~°ued by ~_~--~cy tnsnJ. S..~ co the ~ ~age. -~atlo~ ,_ J ~anSamer~__ --~nce to ~u lnde~ifv _~a, and thu~ You 5) Coverage does not apply to ~ u~a~s ~ - rOt Caused by any alleged d 6) an "Occurrence,,, as defin,~ ~ ~age or inju~ ---~ ny the Unless PO/icy. COVerage does d~age ar.~._n°t appl : . of Smo ~ 1_~.~ o~t o~ ~ to l~ilit li~.~=k~' Vapors, ~ uae discha~__Y for bOdil.. . or ~'i~U=ants in~ ~=e materi-. ~us, alkali- ' release - ~uc th'~ ~. 7' the a~- ~rlta~ts ~- =~ClUsion dh~'uSPnere or a~..C°nt~inant u~s not applv ]~ Watercours~ ~ =r s~ch Mrs. Virginia Neilson June 19, 1990 Page 3 Thank you for your attention to this matter. Robert O. Edwards Claims Analyst ROE/jh cc: Jan Woodin C~if ford-Bradford Agency 1831 Truxtun Ave 'C~ 0%-~ ~ ~-)-~-~ Bakersfield, CA 93301 Gene Bolton Pro Tech Specialties P. O. Box 11324 Midland, Texas 79702 :orner filling station leaves lasting memories on from the late 192h. The gu elafia. . he ~er g~ ~lion has ~ a worry. ~en refining oil, the d~ir~ ~g~ g~l~ ~e in ~efican Ufe for many yea~ p~u~ ~ ker~ne w~ch ges that have happened to Kern gasoUne. He wa~ glad to di~ ~ it at ~ were J~ f~ a~ ~. ~ ~ ~ ~w ~ ~U~ ~ oil well in I~, the development line were ~ld for a fraction ~ aut~obile a~ later the oil cfi~s gaU~," read an exce~ from "OIL" it w~ ~ H~age ~ ~ ~ ~ ~ h 1~, ~ 'were ~arly ~ l~. Even ff there was a market. ccording to the American Petmlem gasoline, shopk~rs d ~e em w~ ~ag~ ~ ~i~ A~ ~ * ~y 1M,~ · * nil relinem w~e not inter~t~ in and troublesome substan~. ATiONS: S -e Ch ges ~nti~u~ from Dr_ ' m~ w~ leas~ their s~Uo~ fro~ ed~~~ quickly s~ ~ big oil mm~ni~. ~ey made } gasoline and oil needs ... ~ ~ living repairing cam, and g~ Jditi~ ~m am ~, a~ o~e ~les were a sideline, t~en oil le fling stati~ is a veritable, p~ucing co~ nationa~ off ~u d ~o~Um f~ ma~m' ~y a~ abed. the~ ~at ~ pla~ ~rfecti~ m~ ~ a way d ~n~ .-HOBBS, N.M. MIDLAND, TX. :. (50~) 393-7427 (g15) eeT-34ge PRO-TECH SPECIALTIES P.O. Box 11324 Mictlancl, Texas 79702 October 20, 1990 "' To: Flora Darling 2700 M. Street Suite 300 ~: Bakersfield, Ca. 93301 From; Gene Bolton ~ P.O. Box 11324 ':~'' Midland, Texas 79702 "~: Subj: Letter of October 11, 1990 Dear Floria, Let me introduce myself. Mrs Virginia Nielsen is my mother. I have been transaGting all business matters for her during the last ten months. All future correspondence should be mailed to me at the address noted above. You can FAX any information to me at 915-687-1993. The following points pertaining to our mutual prob- · · lems need to be listed at this time; 1. Mrs. Nielsen paid $14,100.00 to have all tanks, feeder lines, and contaminated soil removed from the property at 321 E. 18th. Street Bakersfield, Ca. New soil was transfered to this site and placed in the existing cavity. .. 'HOBBS,' N.M. - MIDLAND, TX. -' (505) 393-7~7 (915) 687-3496 PRO-TECH SPECIALTIES P.O. Box 11324 Midland, Tex~ 79702 2. Mrs. Nielsen paid an attorney in Clovis, Ca. approximatl'y .... $5,500.00 trying to recover her money from Mr. Chet Candal- eria's Insurance Company., or his attorney. 3.No response was forthcoming from Mr. Candeleria, his Insur- ance Company., or his attorney. 4. These actions, expenditures, and non-solutions. Contributed to a partial mental and complete physical breakdown with-Mrs. Nielsen. '. 5. Mrs. Nielsen has no money. She exists on Socia& Security and · her retirement check from Kern County. 6. Mrs. Nielsen contributed the very Historic Station Building to the Kern County Museum. No funds were rece&ved or wanted. 7. My late stepfather, Mr. Hans Nielsen, had a signed contract ..... with Mr. Candeleria, (Accompanying copy) which bound Mr. 5:.'. Candeleria to moniter the tanks as instructed in Permit 150040C. It is obivious that this requirement was not .:.i~-~ performed. '.~':~· 8. Mrs. Nielsen's property Insurance has stated that Mr. Candeleria's Insurance is liable. H(~BBS, N.M. MIDLAND, TX. (50~) 393-7427 (915) 687-3496 PRO-TECH SPECIALTIES P.O. Box 11324 Midland, Texas 79702 9. T certa±nl¥ want. to work w±th you £n every possible way. Z na[u=a[~ ~es~ce [o ~e~ ~h~s p=ope=[y ~n[o a se~[ab[e s[a[~s. M=s. ~e[sen needs .[he ~ncome ~[ could p=od~ce. ......... 10. I have '.been a contributing member of-Green peace for many years, and I believe that all poluting areas must be terminated. Keep up the good efforts. Thank you and regards Gene Bolton CC/J.W. Neal File ~;~ ~..~ . . RESOURCE MANAGEMENT AGENCY Environmental Health Sea, vices Department RANDALL L. ABBOTT S~rE McCALLEY, REHS, DIRECTOR DIRECTOR ^i~ Po,,.~o. Co.t~o~ [~t~ DAVID PRICE I11 W~LL~M J. RODDY, APCO ASSISTANT DIRECTOR P~anning & Development Sev~.~J Department TED JAMES, AICP, DIRECTOR ENVIRONMENTAL HEALTH SERVICES DEPARTMENT October 11, 1990 Mrs. Virginia Nielsen 1001Sylmar Space 31 Clovis, CA 93612 SUBJECT: Location: 321 E. 18th Street, Bakersfield, CA Known As: Chico and the Man Gasoline Station Permit #: 150040 Dear Mrs. Nielsen: Our last communication regarding the above referenced site was February 20, lg90, when Mrs. Virginia Knudsen telephoned this office to discuss the site's status. It was our Department's understanding that you were consulting an attorney in regards to recovering costs of site characterization and possible clean-up actions from Mr. Chet Candelaria. Since our office has not received any further communication from you regarding the site, I have enclosed a copy of SB 299 (Keene), for your information. You may be eligible under SB 29g Legislation to obtain a small business loan or clean-up fund to characterize the site. Please stay in communication with this Department regarding your efforts to resolve the necessary actions needed to move this site toward closure. If you have questions you may contact me at (805) 861-3636, Ext. 54g. Sincerely,/~ /~/ Flora Darling, R.E.HoS. - Hazardous Materials Speciali'st Hazardous Materials Management Program ED:ch darling\nielsen, lel 2700 "M" STREET, SUITE 300 BAKERSFIELD. CALIFORNIA 93301 (805) 861-3636 '~ MIDLAND, TX. (915) 687-3496 PRO-TECH SPECIALTIES P.O. Box 11324 Midland, Texas 79702 ~ber 20 -1990 Flora Darling 2700 M. Street Suite 300 Bakersfield, Ca. 93301 MID~ND,~7~ Gene Bolton GENE BOLTON P.O. Box 11324 OWNE, Midland, Texas 79702 MID.ND OFFICES 91~7.~ TOLL FREE ~Z-~99 Letter of October 11, 199 FAX915~7.~ Floria, [ k--- -- Let me introduce myself. Mrs Virginia Nielsen is my ~er. I have been transacting all business matters for during the last ten months. All future correspondence ~ld be mailed to me at the address noted above. You can . -_ _ any information to me at 915-687-1993. The following points pertaining to our mutual prob- ~ need to be listed at this time; Nielsen paid $14,100.00 to have all tanks, feeder lines, contaminated soil removed from the property at 321E. 18th. et Bakersfield, Ca. New soil was transfered to this site placed in the existing cavity. BNA CALIFORNIA ENVIRONMENT REPORTER Vol. 1, No. 2 THE BUREAU OF NATIONAL AFFAIRS, INC. November 26, 1990 HIGHLIGHTS ENVIRONMENTAL ..C'3.,E,/dqUP COSTS are GROUND WATER RECYCLING at Lawrence damages covered by insurance policies, the Call- Livermore National Laboratory uses treated fornia Supreme Court rules in a decision viewed groundwater from Superfund cleanup to cool the as "pro*policyholder." In a separate acUon, the facility's air conditioning system in an effort to court agrees to decide the power of counties to trim Livermore's water use (p. 20). enforce permits at hazardous waste sites (p. 25). PARKING FEES suggested by the Bay Area ROADSIDE INSPECrlONS of the opacity of Metropolitan Transportation Commission as part emissions from buses and heavy-duty trucks are of a three-pronged air quality improvement plan ordered under rules adopted by the Air Resources are condemned by industry as "potentially devas- Board (p. 19). taring" to retail centers, but branded inadequate OIL*EATING MICROORGANISMS indicate by some environmental groups, at a hearing on promise for cleaning up a 59,000-gallon diesel' the proposal (p. 27). spill at Sandia National Laboratories (p. 20). TOUGHER AUTO EMISSIONS LIMITS will be AN ENVIRONMENTAL SUPERAGENCY for phased in between 1993 and 1995 by the ARB under a waiver from the Clean Air Act granted to the San Francisco Bay Area is contemplated in a California by the federal Environmental Protec- Bay Vision 2020 draft report (p. 28). tion Agency (p. 21). CHARCOAL LIGHTER FLUID i~' the subject SMALL RECIPROCATING g.NGINES used in of a suit by outdoor barbecue manufacturers utility and lawn and garden equipment could be which charges that a South Coast Air Quality subject to new emissions standards after hear- Management District rule limiting lighter fluid ings by the ARB scheduled for Dee. 13-14 in San emissions is flawed (p. 26). Francisco (p. 23). DAIRIES ARE TARGETED as hazardous OIL TANKER TRAFFIC improvement sugg~s- waste sources that pollute streams as Sonoma tiGriS for San Francisco Bay are voiced during the County prosecutors settle one case brought under first hearings held following enactment of land- the Hazardous Waste Control Act and file a sec- mark oil spill prevention legislation. The sugges- ond one (p. 24). tiGriS range from deferring to federal officials to a call for a sweeping expansion of the existing SMOG SEASON OZONE EXCESS~ fell to' vessel traffic system (p. 22). historic lows this year in both the South Coast and the Bay Area Air quality Management Dis- tricts, according to reports issued by the two BIG GREEN'S DEFEAT does not signal a districts (p. 28). voter backlash on environmental issues, the heads of California's two leading business MINOR MITIGATION COSTS are associated and environmental groups--Kirk West of with the proposed merger of San Diego Gas & the California Chamber of Commerce and Electric Co. with Southern California Edison Co., Michael Paparian of Sierra Club Califor- the California Public Utilities Commission says nia--tell BNA in exclusive interviews on the in a final environmental impact report on the election's aftermath (Interview, p. 29). merger (p. 22). Col3~'tght O 1990 by The Bureau of National iffalm. Inc.. Waehlngto~. D.C. 20037 LEGAL DEVELOPMENTS Hazardous Waste ,4m-ojet case and settled the question of liability permanently in California," attorney Moses Lasky ENVIRONMENTAL CLEANUP COST8 told BNA Nov. 16. Lasky, a partner tn the San Francis- 'COVERED DAMAGES,' SUPREME COURT RULES co-based law ~ of Lasky, Haas, CoMer & Mttater, represented Aerojet General Corp. la a similar cover- Goverument-ordered environmental cleanup costs age dispute heard by a California appellate court are damages covered by comprehensive general Ii* which ruled for policyholders on the damages issue ability insurance policies, the California Supreme two years ago CAe~*o~et Ge~ter~J Corp. t*. Court ruled Nov. 15 in a unanimous pro-policyholder Court of $(ru Af(zteo Countt;, Calif CtApp First App* decision (,4IU Ins. Co. u. Superior CouFt, Calif Div, 209COlApp. 3d 973). "Since California pronounce* SupCt, No. S012525, 11/15/00). ments tend to affect the rest of the country, this will Ruling that insurance policy language should be probably have farther reaching effects," he sai~L construed according to "the mutual intentions of the Insurers argue that the court's decision will affect parties** and its "plain and ordinary'* meaning, resolv- all insured companies, whether or not they have a lng ambiguities tn favor of coverage, the supreme waste problem. "Our point has been that these compa- court overturned an appeals court decision tn favor of hies are polluters--polluters who are endangering the insurance carriers (AIU IJu. Co. t~. Superior Court environment--and they should be responsible for of $(tut(z Clara Countlh Calif CtApp Sixth AppDiv, cleaning up the mess they make," said Bill Packer, No. H005467). spokesman for the Association of California Insurance Attorneys for policyholders hailed the ruling as Companies. "By asking insurance companies to pay, further evidence of a "pro-polieyholder trend" across you are asking the consumers--the policyholders--to the county, but attorneys for insurance carriers pre- dicted it would result in more litigation, not necessar- pay for the cleanup.'* ily more victories for policyholders. High Court Rejects 'AeroJet* Definition At issue is coverage sought by FMC Corp., a ma- In interpreting policy previsions, the court ruled in chinery and chemicals manufacturer, from about 170 its 60*page opinion that if FMC is held liable in the of its insurance companies for complying with govern- underlying third-party suits, it will be "legally obligat- ment cleanup orders. FMC is the defendant in actions ed" to pay for whatever relief the courts order. The commenced by federal and state governments under high court rejected the carriers' argument that tn the Comprehensive Environmental Response, Com- making such an award, the courts would be exercising pensation, and Liability Act (CERCLA) and similar "equitable" rather than "legal" authority. state laws,' in which the governments claim that FMC The word "damages" tn comprehensive general Ii- must elect to either pay the governments' cleanup ability (CGL} policies should be given its "plain and costs or perform its own investigation and cleanup, ordinary" meaning, the court said. It rejected the narrow, technical definition of "damages" used by the Carriers' Defense Arguments Foil U.S. Court of Appeals for the Fourth Circuit tn the pro- "This decision is significant nationally because this carrier decision, M(zrl/l(Jnd C(3su~ltp Co. t,. is California, a key state," FMC General Counsel Inc. (822 F2d 1348, cert. denied 484 US 1008). Bowen H. Tucker told BNA Nov. 16. "The California The court also rejected the broad defirgtion of dam- court clearly confirmed that general liability policies ages applied by the California Court of Appeals, First provide coverage for the costs of waste site cleanup. District, in the pro-policyholder Aero, et decision. The The other important aspect of the decision is that the Aero, et court defined, damages to Include "any sum court rejected one of the carrier's key arguments that expended under sanction of law.*' The ,4ero;~et court large companies--because of their size and sophistica- said, "The insured may reasonably expect coverage tion--should not have the benefit of the same kind of for any sums expended, either at law or equity, as a policy interpretation as the normal policyholder." result of the insured's causing property damage to But carrier attorneys disputed that interpretation, another." The supreme court denied review of "I don't think the court rejected that argument at ~et in August. The case is currently pending before the all," said carrier attorney Barry Ostrager of the New trial court on other issues. York f~*m of Simpson, Thacher & Bartlett. "What the Although ruling that the statutory and dictiunary court was clearly saying was that these cases each definitions of damages should be used, such a defini- have to be resolved on the facts.*' tion will not be applied "inflexibly,*' the court said. '"rile supreme court ruled exactly the same way adding that ambiguities would be construed to protect that the appeals court ruled two years ago tn the the "reasonable expectations of the insured." I 1-~6-90 BNA Callfo~la--t=nvJroflmeflt Roportof (A) STATE CONTRACT The State Leaking Underground Storage Tank Pilot Program provides a mechanism for the State to reimburse the County for County oversight. The County will conduct the necessary oversight and bill the State Water Resources Control Board under this State contract. The State will then charge you, a responsible party, for both the costs incurred by the County and the State, pertaining to your site, under the State terms explained below: Whereas the Legislature has appropriated funds from the California l-lazardous Substance Clean-up Fund to pay the local and state agency administrative and oversight costs associated with the cleanup of release~ from underground storage tanks; and Whereas the direct and indirect costs of overseeing removal or remedial action at t he above site are funded, in whole or in part, from t he Hazardous Substance Cleanup Fund; and Whereas the above individual(s) or entity(ies) have been identified as the party or parties responsible for investigation and cleanup of the above site; YOU ARE HEREBY NOTIFIED that pursuant to Section 25360 oI~ the Health and Safety code, the Above Responsible Party or Parties shall reimburse the State Water Resources Control Board for all direct and indirect costs incurred by any and all state and local agencies while overseeing the cleanup of the above underground storage tank sile, and the above Responsible Party or Parties shall make full payment of such costs within 30 days of receip! of a detailed invoice from the State Water Resources Control Board. (B) COUNTY OF KERN LOCAL AGREEMENT OPTION Kern County Environmental Health is providing this option for those who prefer to pay the County directly and avoid the addition of State costs. Prior to the County's performance of services, this option requires your deposit of $1,000.00 (one thousand dollars) with the County to be held in the Local Option Trust Account. Charges for County oversight are made against this account. In this option, a responsible party must enter into a County agreement, attachment "B". The environmental sensitivity {attachment "C") of this, site has been reviewed by Environmental Health to determine the potential threat for groundwater contamination. Only sites determined to be non-environmental.!y sensitive may enroll in the Local Option Agreement. The site described above is not in an environmentally sensitive area and may be enrolled in the Local Agreement Option; however, the County of Kern reserves the right to cancel any Local Agreement Option, should it be discovered that groundwater contamination or a unique, complex hydrogeological condition exists. In such cases, Environmental Health will utilize the State contract to pay for County oversight activities. The County of Kern reserves this right for any site even when the site is located in a non-environmentally sensitive area. It is necessary for you to respond, in writing, within ten (10) calendar days of receipt of this letter to advise Kern County Environmental Health of your choice: either the State contract or the County's Local Agreement Option. If you select the County's Local Agreement, please complete and sign the Local Agreement, (attachment B), and return it with your check for $1.,000.00 (one thousand dollars) made payable to the County of Kern, addressed to Kern County Environmental Health 2700 M Street, Suite 300, Bakersfield, CA 93301, Attention: Accounting - Local Agreement Option. If you select the State contract, please indicate, in writing, that you have made this selection and that you have read the above official notification. Failure to respond within ten (10) calendar days to this notice will automatically result in oversight cost recovery for your site(s) to be placed under the terms of the State contract for Leaking Underground Storage Tanks. If you should have any questions regarding this matter, please contact Susan Gonzales -at (805) 861-3636. J Environmental Health Servic~xs D~partment attachments · ADVANCED ENVIRONMENTAL CONCEPTS INC- Advanced Environmental Concepts, Inc. is pleased to present the following: Environmental Site Assessment for Chico and the Man Service Station 23 t East t 8th Street County of Kern · Bakersfield, California This report has bcc, n prepared for: Gene Bolton, Pro-Tech Specialties January ~994 · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MINE)· 44,00ASHEROAO.#206 * ~AKERSFiELD. CA93313 805t831-164.6 ', FAXS05/831-1771 Environmental Assessment Report Advanced Environmental Concepts, Inc. Table of Contents Parle 1.0 INTRODUCTION t 2.0 BACKGROUND I 3.0 SITE CHARACTERISTICS 2 3. t Site Description 2 3.2 Regional Geology 3 3.3 Local Geology 3 3.4' Hydrogeology 3 4.0 ASSESSMENT ACTIVITIES 3 4.1 Decontamination Procedures 3' 4.2 Soil Borings 4 5.0 ANALYTICAL RESULTS 4 6.0 FEASIBILITY STUDY 5 6.1 Soils 5 6.2 Extent of Hydrocarbon Migration 5 6.3 Remediation Alternatives 6 7.0 CONCLUSIONS 7 8.0 RECOMMENDATIONS 8 9.0 LIMITATIONS 8 I 0.0 CLOSING 9 Appendices: [Al Project Maps/Figures [BI Boring Logs ICI Laboratory Reports/Chain-of-Custody Documents Project: AEC 94C-14tt · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND · 4400 ASHE ROAD. #206 * BAKERSFIELD. CA 93313 805/831-1646 · FAX 805/831-1771 Environmental Assessment Report Advanced Environmental Concepts, Inc. 1.0 INTRODUCTION This report presents the results of o soil investigation conducted by Advanced Environmental -- Concepts, Inc. (AEC) to estimate the extent of hydrecorbon Impacted soil resulting from the unauthorized discharge of gasoline, identified following the removal of four (4) underground storage tank (UST) and associated plumbing. The UST was located at the Chico and the Man Service Station, 315t East 18th Street, Bakersfield, California (Appendix A, Figure I). The project was performed on_ December 29. I<:)93, in accordance with the work plan previously designed and submitted by AEC and approved by the Kern County Environmental Health Department (KCEHD). This investigation was authorized by Mr. Gene Ballon of Pro-Tech Specialties, representing Mrs. Nelsien the property owner, and conducted under the direct supervision of Ms. Flora Darling, Hazardous Materials Specialists, Kern County Environmental Health Department (KCEHD). The subject site is located in east Bakersfield. The general area is comprised of light Industries, retail stores and related service businesses. Contained in this report is background information regarding existing site characteristics, regional and local hydrogeological profiles, and the project history. Also included in the following sections are the objectives and scope of investigation, detailed investigative procedures, and subsequent findings. Finally, AEC provides an evaluation of said findings and makes related conclusions and recommendations. The report appendices contain project maps and figures [Appendix A], soil boring logs [Appendix BI, laboratory reports/chain-of-custody documents [Appendix C], and cross- sections depicting the horizontal and vertical extent of hydrocarbon migration [Appendix DJ. 2.0 BACKGROUND On April 21, 1989 Valley Tree Construction supervised the excavation, removal, and disposal of four [4] gasoline UST's from the subject site. Very strong gasoline odors were noted in the soil during the excavation procedures. Former tank locations and sample locations are presented on Figure 2 (Appendix A). The analytical results of soil samples collected from below the removed UST are presented in Table 1. Units are in milligrams per kilogram (rog/kg) which are equivalent to parts per million (ppm). Table I Analytical Results - Soil Samples Tank Removal 412tl89 (ppm] Sample I.D. TPH-g Benzene Toluene Xylenes Ethylbenzene TH-I-2' 6900 3t0 920 12t0 220 TH-I-6' 5600 2 t0 690 1085 t90 TH-2-2' 4300 t 50 550 670 140 TH-2-6' 7000 230 930 1520 280 Project: AEC 94C-t41t . I · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND · 4400 ASHE ROAD, #20l~ · BAKERSFIELD. CA 93313 805/831-1646 · FAX 805/831-1771 Environmental Assessment Report Advanced Environmental Concepts, Inc. Table l [continued] Anal~cal Results - Soil Samples Tank Removal 4/2tl89 [ppm] Sample I.D. TPH-g Benzene Toluene Xylenes Ethylbenzene TH-3-2' 5000 85 490 1230 2 t 0 TH-3-6' 2500 'I 5 ~ 00 472 70 TH-4-2' ND ND ND ND ND TH-4-6 ND ND ND ND ND TH-5-2' ND. ND ND ND ND TH-5-6 ND ND ND ND ND TH-6-2' ND ND ND ND ND THo6-6 ND ND ND ND ND TH-7-2' ND ND ND ND ND TH-7-6' ND ND ND ND ND TH-8-2' ND ND ND ND ND TH-8-6 ND ND ND ND ND TH-9-2' ND ND ND ND ND TH-9-6 ND ND ND ND ND Detection Limit: 4.0 2.0 2.0 5.0 2.0 ND: Non-detected TPH-g: Total Petroleum Hydrocarbons as gasoline Based on these results, KCEHD required that a site assessment evaluating the lateral and vertical extent of hydrocarbon impacted soil be performed. 3.0 SITE CHARACTERISTICS The following sections summarize the project site features and conditions along with regional and local geological and hydrological characteristics. 3. t Site Description The Chico and the Man Service Station is located on the southwest corner of the intersection of East ~ 8th and Sonora Streets, in Bakersfield, California. The general area is comprised of light industry and related services. The subject site is at an average elevation of 385-feet above mean sea level with minimal topographic relief. The property is presently a vacant lot. Project: AEC 94C-44~ 2 · ENVIRONMENTAL CONCEPTS WITH I~ESlGN IN MIND * 4400 ASHE ROAD. #206 · BAKERSFIELD. CA 93313 805/831-1646 * FAX 805/831-1771 Environmental Assessment Report Advanced Environmental Concepts, Inc. 3.2 Regional Geology · The subject property is located in the Southern San Joaquin Valley [Valley] which is a part of the Central Valley of California. The Valley forms the southern twa-thirds of the Central Valley and is characterized as a broad structural trough. It is bordered on the east by the Sierra Nevada Range and on the west by the Coast Range [Diablo and Temblor Mountains]. The Valley extends 250 miles southeastward from the confluence of the San Joaquin and Sacramento Rivers to the Tehachapi and San Emigdio Mountains. The width ranges from 25 miles wide near the Kern River to approximately 55 miles wide near the Kings River, with an approximate average width of 40 miles. Geology of the southern Valley consists of a Pre-Tertiary basement complex overlain by marine and non-marine sedimentary rocks of Tertiary age. These rocks are composed of consolidated sandstones, siltstones and shales which thicken from northeast to southwest. The Valley was once an inland sea of comparatively shallow depth that continued to subside due to the ever increasing load of sediments transported and deposited from higher elevations. These deposits consist of gravels, sands, silts and clays. The majority of the groundwater pumped from the Valley floor occurs within these relatively unconsolidated continental deposits. 3.3 Local Geology The investigated property is located on alluvial deposits, created from sediments transported and deposited by local streams, and during flood stages of the Kern River. The site is situated in a laWlto moderate energy flood plain environment consisting of weakly consolidated to uncj~nsolidated, poorly bedded sands and silts. 3.4 Hydrogeology Ground and surface water in the central Bakersfield area is regulated by the Kern County Water Agency. According to the Kern County Water Agency "Water Supply Report-t990", depth to groundwater in unconfined and equivalent wells is estimated at 180-feet below grade level [BGL) at the site. No perched water bearing zones are reported in the area. 4.0 ASSESSMENT ACTIVITIES 4.t Decontamination Procedures Prior to initiating drilling operations, the augers and associated drilling equipment were thoroughly cleaned using a high pressure steam cleaner. In addition, the soil sampler and hand auger were washed in an Alconox solution and double rinsed in clean, deionized water prior to initial use and between each sampling interval to minimize the possibility of cross-contamination between samples. Project: AEC 94C-t411 3 · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MINE) * 4400 ASHE ROAD. #206 · E3AKEFISFIELD 0A93313 805/831-1646 · FAXS05/831-1771 Environmental Assessment Report Advanced Environmental Concepts, Inc. 4.2 Soil Borings On December t2, 1994 four [4] soil berings [B-t, B-2, B-3, and B-4] were drilled on the subject property. The borings were advanced using a truck-mounted Mobile B-61 drill rig, equipped with 8-inch O.D. continuous flight, hollow-stem augers. Borings I, 2, and 4 were drilled to a total depth of 60 feet BGL and boring 3 was drilled to 30 feet BGL. The borings were positioned to evaluate the vertical and horizontal extent of the hydrocarbon migration. Soil samples were collected at intervals of 5-feet in all borings commencing at 10-feet BGL. Samples were obtained by driving a thin-walled steel sampler, equipped with three [3] 2.5-inch x 6-inch brass sleeves, a minimum of 18-inches into previously undisturbed soil. The sampler was driven ahead of the augers using a 140- lb. slide hammer with a 30-inch vertical fall. Following each sample drive, the sampler was withdrawn from the borehole and the three [3] brass sleeves were removed. The bottom sleeve was retained for laboratory analysis and prepared by placing teflon tape and plastic caps over each end, then securing the caps with duct tape. The samples were labeled, placed in sealable plastic bags, recorded on a Chain-of-Custody document and placed in an ice chest cooled with blue ice. Soil exposed at each end of the center brass sleeve, and the cuttings, were examined for lithological purposes and for any obvious evidence of hydrocarbons. Lilhologic descriptions [Appendix BI were logged according to the Unified Soils Classification System [USCS]. Chain-of-Custody protocol was strictly followed to ensure sample integrity and traceability. Upon completion of the above described procedures, the borings were abandoned with hydrated bentonite followed by a cement slurry to grade. 5.0 ANALYTICAL RESULTS Selected soil samples were submitted to Associated Laboratories, Inc., of Orange, California and analyzed for total petroleum hydrocarbons as gasoline (TPH-g) and volatile aromatics (BT×E) using CA DHS and EPA 8020 method, respectively. The analytical results are presented in Table 2 and the laboratory reports and Chain-of Custody are provided in Appendix C. Units are in milligrams per kilogram (rog/kg) which are equivalent to parts per million (ppm). TABLE 2 Analytical Results - Soil Borings 121t5/93 (ppm} Sample I.D. TPH-g Benzene Toluene Xylenes Ethylbenzene Bt-20 ND ND ND ND ND BI-30 ND ND ND ND ND BI-40 11 0.80 2.0 0.93 0.11 BI-50 13 ND ND ND ND BI-55 19 0.08 0.t5 0.06 ND BI-60 ND ND ND ND ND Project: AEC 94C-14tt 4 · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND · 4A00 ASHE ROAD. #206 · ~AKEIRSF!ELD. CA 93313 805/831-1646 · FAX 805/831-1771 Environmental Assessment Report ~ Advanced Environmental Concepts, Inc. [continued] ~'~ Analytical Results - Soil Borings 121t5/93 (ppm) Sample I.D. TPH-g Benzene Toluene Xylenes Ethylbenzene 82-`15 / 4300 ND 2.2 380 4.3 82-25 / 2600 0.20 35 300 40 82-30 ~ 9800 V 45 v/ 910 1400 25o 82-35 I 2700 2.7! 130 350 55 82-40 L.-4.,44~0 ~ 190 V ,1500 2000 370 82-45 -'"39 0,23 2.0 3.4 0.56 82-50 4.6 ND 0.85 0.20 ND 82-55 t0 0.08 0.02 0.'!0 0.01 82-60 t5 ND ND ND ND / 83-20 42 / ND / ND ND ND 83-30 2700~J 12'/ 200 340 56 84-30 70 0.11 1.5 1.3 4.4 84-50 16 ND 0.01 0.039 ND B4-60 17 0.02 0. t 0.16 0.02 D.L.[mg/kgl t .0 0.005 0.005 0.005 0.005 ND: Non-detected at indicated limit of detection D.L. Detection Limit 6.0 FEASIBILITY STUDY 6.1 Soils The soil profile at the site consists af siltY sands, "dean" sands, and poorly sorted sands to a total drilled depth of 60 feet BGL. The silty sands [SM-ML] are commonly tan-brown, slightly to very compact, oommonly friable, and slightly to moderately moist. The "clean" sands [SW] are olive gray-buff, moderately dense, unconsolidated, and slightly moist. The poorly sorted sands [SP-GC] commonly consist of olive-gray to white, moderately to. very dense, unaansolidated to very consolidated, and slightly moist. The sediments are typioal of Iow to moderate energy fluvial deposits subjected to periodic reworking during flood stages. The strata were loosely compacted due to the inoreasing weight of the overlying sediments. 6.2 Extent of Hydrocarbon Migration Analytical results indicate that significant hydrocarbon concentrations extend to a depth of 45 feet BGL with the highest concentration, 14,000 ppm, being detected in B-2 at 40 feet BGL. Hydrocarbon levels below `100 ppm were detected in B-I and B-4, and below Projech AEC 94C-t4t t 5 · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND * 4400 ASHE ROAD. #206 · BAKERSFIELD. CA93313 805/831-1646 ° FAX 805/831-1771 Environmental Assessment Report Advanced Environmental Concepts, Inc. 40 feet BGL in B-2. Plume dimensions are approximately 60 feet deep by 60 feet wide and forms an nonsymetric, elongated, spheroid shape that ocoupies approximately 6,200 cubic yards. The highest concentrations of hydrocarbons are contained within about 785 cubic yards. 6.3 Remediafion Alternatives Advanced Environmental Concepts, Inc. recommends the following three [3] remediation alternatives for treatment of the hydrocarbon contamination located at the subject facility: t ] No-action alternative; 2] Implementation of an in-situ vapor extraction system; and 3] In-situ bioremediation of the impacted soil. Allemative #1: The no-action remediation alternative invOlves leaving in place, the soils that exhibit hydrocarbon levels in excess of RAL, then capping the contaminated area with a relatively impermeable layer of asphalt or concrete. This alternative would require approval of the Kern County Environmental Health Department. To be eligible for this remediation alternative, the site location must satisfy specific parameters associated with depth to groundwater, site geology and contaminant concentration levels. It is unlikely that this facility will be eligible for this alternative in that the site does not satisfy the following criteria based upon the "Leaching Potential Analysis- gasoline" as outlined in the LUFT Manual: (al Groundwater depth is estimated at 180-feet BGL Il0 points] Ih] No discernible fractures [10 points] [c] Average annual precipitation is less the '10-inches [5.72] [10 points] [d] No available man-made conduits [t0 points] [e] Coarse grained soil [ 9 points] There is a total of 49 points scored which correlates to the following maximum allowable levels of gasoline-range hydrocarbons that can be left in place; 1,000-ppm and 1/50/50/50 for TPH and BTXE constituents, respectively. The hydrocarbon concentration levels found at the subject site exceed these limits to a depth of 45-feet in soil boring B-t. Alternative ~2: The vapor extraction alternative involves the withdrawal of the volatile organic constituents from the soil matrix via a vacuum pump manifolded to extraction wells, and the subsequent destruction or collection of hydrocarbons using a regenerative thermal oxidizer or carbon adsorption. This system operates on the principle that volatile organic compounds have relatively high vapor pressures and will volatilize at ambient soil temperatures provided a reduction in pressure is applied. The treatment Project: ~ 94C-~4~ t 6 · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND · 44,00 ASHE ROAD. #206 · 8AKE~SFtEL'D. CA93313 805/831-1646 · FAX 805/831-1771 Environmental Assessment Report Advanced Environmental Concepts, Inc. at the subject site would also involve injecting air into the perimeter wells to enhance the volatilization of the diesel-range hydrocarbons while oxygenating the soil and promoting natural bio-degradation. Vapor extraction is most effective and efficient in coarse grained soils [SP], although soils classified as ML [silt] also have the capability of being treated by this method. Because hydrocarbon vapors are generated by the removal process, an air emission recovery system will be required by the local Air Pollution Control District [APCD] if the hydrocarbon concentrations exceed allowable emission levels. The soil venting system is also most effective on hydrocarbons with high vapor pressures. The advantages of this treatment alternative include the ability to treat the soil in-situ, ease of installation and manifolding of the extraction wells, minimal maintenance, relatively rapid reduction in hydrocarbon concentrations, and minimal disruption of normal site operations. Alternative '3: Bioremediation involves treating the impacted soil either abovegraund or in-situ. The aboveground treatment alternative involves excavation and surface treatment of the affected soil and is more time-efficient and effective than the in- situ method. However, this discussion will center on the in-situ method because the depth of gasoline impacted soil and the proximity to the warehouse negates an excavation alternative. The in-situ treatment method involves introduction of microbes and nutrients to the contaminated soil via injection wells screened across the affected intervals. A mixing tank is placed above the well and hydrostatic head pressure allows continual percolation of biologically active fluids through the contaminated zones. The soil type is primarily a sand or silty sand and would be receptive to an active biological treatment method. However, intervals of consolidated sand are also present, which could impede the lateral migration of the microbes. To offset this effect it would be necessary to install a tight injection well pattern, which increases the treatment cost per cubic yard. 7.0 CONCLUSIONS On the basis of our investigation, AEC presents the following conclusions: a) The soil profile at the subject site generally consists of interbedded sands and silts to the total drilled depth of 60 feet. b) The analytical results indicate elevated levels of TPH-g and BTXE to a total depth of 40 feet in B-2 and B-3. TPH-g and BTXE levels are below the RAL for gasoline in soil in all other samples analyzed. c) The vertical extent of the gasoline migration appears to extend to a depth of 60 feet BGL. The lateral extent of the plume is about 60 feet. The approximate volume of the plume is 6,280 cubic yards and extends underneath a large portion of the site and probably the adjoining streets. ~ Projecl: AEC 94C-t41t 7 · ENVIRONMENTAI- CONCEPTS WITH IDESlGN IN MIND * 4400 ASHE ROAD. #206 · BAKERSFIELD CA 93313 805/831-1646 * FAX 805/831-1771 Environmental Assessment Report Advanced Environmental Concepts, Inc. d) The soils containing elevated levels of TPH and BTXE are separated from groundwater by approximately t40 feet. e) It is unlikely that groundwater is currently threatened by this unauthorized release. 8.0 RECOMMENDATIONS Based upon the levels and volume of gasoline-range hydrocarbons and the found in the coarse grained soil, Advanced Environmental Concepts, Inc. recommends that the vapor extraction alternative be implemented at this site. 9.0 LIMITATIONS This work has been performed in accordance with generally accepted environmental science and engineering practices. The soil samples for this project were obtained on a finite grid as directed by the on-site regulatory agency representative, hence the analytical results are indicative of discrete samples and are not meant to be misconstrued or representative of unsampled subsurface areas. Conclusions and recommendations are based upon information collected and compiled during this investigation. No other warranty, expressed or implied, is given. Project: AEC 94C-t444 8 · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND · 4400 ASHE ROAD. #206 · BAKERSFIELD. CA 93313 805/831-1646 · FAX 805/831-1771 Environmental Assessment Report Advanced Environmental Concepts, Inc. 10.0 CLOSING Advanced Environmental Concepts, Inc. appreciates the opportunity to be of service to Mr. Gene --Bolton on this project. If there should be any questions or additional information required regarding this report, please do not hesitate to contact our office at (805) 831-1646. This Environmental Site Assessment has been prepared by.. Advanced Environmental Concepts, Inc. /~ose~h A. Dunwoody ~/' ,/ California Registered Geologist ~5504 This Environmental Site Assessment has been reviewed by: I~roject Hydrogeologist Registered Environmental Assessor #1508 ~vCalifornia I)OCZZBX Project: AEC 94C-14t t 9 · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND · 4400 ASHE ROAD, #206 · BAKERSFIELD, CA 93313 805/831-1646 · FAX 805/831-1771 Advanced Environmental Concepts, Inc.- .. · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND · * I=IAKI::t::I~FII:::I D CA.q3313 805/831-1646 · FAX 805/831-1771 ! ! Chico and the Man Service Station 1 231 East 18th Street ADVANCED ENVIRONMENTAL CONCEPTS P.O. BOX40672 BAKERSFIELD, C.A 93384 County of Kem· Bakersfield, CA EAST 18th STREET / ~FO----_.~_~ / TH-9 TH.MSI~,I$1_4No/ ~ / ........... FORME~ PIPING ....... .. ' ........ =================================== . ...... :~ ::::::::::::::::::::::::::: :: :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: ND "' '.. TH -4 FORMER TANK PIT ~ .~t~ m I ~ ~ ~hi~ ~nd ~o ~ 8~i~ 8t~on ADVANCED E~RONME~AL ~NCEP~ P.O. BOX~ BAKERSFIELD, CA 9~ ~un~ of Kern · Bakersfield, Califomia · · E. 18th STREET · BUILDING VACANT LOT · FORMER TANK PIT_ :::::::::::::::::::::::::::::B~::::::' ,, .FENCE ........ /~ ~ / ~' '......I i 1" = 10' ~ J Chico and the Man Service Station 231 East 18th Street ADVANCED ENVIRONMENTAL CONCEPTS County of Kem· Bakersfield, California P.O. BOX 4067E BAKERSFIELD, CA 93384 / E. 18th STREET /lllllll I1tlt111111111'~ · BUILDING / VACANT LOT # · FORMER TANK ~. \ IIrr% :::::::::::::::::::::::::::::::: / B1 SOILBORING I. D. ~ · SOIL BORING LOCATION 1"- 10' / , El ~,,~__ -Extent of AreaiHydr°carb°ns' view FIGURE ~ Chico and the Man Service Station 231 East 18th Street ADVANCED ENVIRONMENTAL CONCEPTS P.O. BOX4067E BAKERSFIELD, CA ~ County of Kern · Bakersfield, California NORTH O I SOUTH A' A I B4 B3 B2 B1 -- 117 APPROXIMATE AliEA OF TOTAL PLUME ,,,,,...,,, ,.......,,,,"~0 ~ ~ I ~ ~- 42 ND I iiiiiiiiiIIIIIIII ,,,,,,,,,,,,,,,,,,,,,,,,'"' ~~ [ 16 ZONE OF >1 ,~0 ppm 4.6 ----} 13 --- 50' , ,,,,,,2 10 ~ iIll ~ TP~N PPM SCALE ~ ]~~~ -Cross 8oction A-A'- [ ~ Chim ~d ~e M~ Se~ Sta~on 5 ADVANCED EN~RONME~AL CONCEP~ 231 East l~h ~reet P.O. BOXY72 BA~RSRE~. CA ~ Coun~ of Kern · B~ersfield, C~Eomia Advanced Environmental Concepts; Inc. · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MiND · WELL DEPTH PID ~,~,~Vl P LE ID ~RVAL U.S.C.S. DETAIL (ppm) BE~WCOUNT LOG LI OGIC DESCRIPTION -- 5 -- o GRAB SILTY SAND (SM): Dk yell bm, fn- e. se, hrd, 60% sand, 40% fines, SM motst no odor. -- 10 -- 0 8 I sP POORLY GRADED SAND (SP): Yell Bm, fn-med grained, 11~ subang-$ubmd, hard, medium dense, homo, moist, no odor. 15 -- 15 -- o 12 22 ~ SP SAME AS ABOVE -- 20 -- o 12 · SP SAME AS ABOVE 3O -- 25- 5oo 14 · SP SAME AS ABOVE 18 25 -- 30 -- 700 10 I SANDY SILT (Mt.): Gm-Mu, very stiff, 60% 18 ML fine gminod, Iow plastic, no dry strgh, 40 % 20· sand, moist, homo, sm o~ganics, hydrOCaltmn odor. AEC WELL/BORING LOG ~.0. BOX 40~7£ BAI~$Ft~LO, CA PROJECT ChlcoandtheManlGoneBolton LOCATION 231 E. 18thSt~eet, Bakersfleld, Califomla WELL/BORING NO. B.1 SURFACE ELEVATION WEM.HEAD ELEVATION N/A DATE DRILLED 12/15/93 LOGGED BY J- Dunwoody REVIEWED BY J. DUNWOODY DRILLING COMPANY S_B & S Drfllln¢l_ Compa_~v DRILLER VernSmilh METHOD HOIIO_W_$__TE.M_A__U.G_~R_ .... BORE HOLE DIAMETER 8 INCH TOTAL DEPTH 60' DEPTH TO WATER: INITIAL N/A STATIC NIA CASING TYPE DIAMETER SCHEDULE INTERVAL .N/A TO _NIA_ ....... SCREEN TYPE DIAMETER SLOT SIZE INTERVAL N/A TO N/A FILTER PACK TYPE INTERVAL N/A TO ___N/A_ ...... SURFACE SEAL TYPE Cement sand slurp/over bentonite INTERVAL N/A .TO N/A NOTES WELL DEPTH PID .~MPLE ID U.S.C.S.~"~tLO ~RVAL LI GIC DESCRIPTION DETAIL (ppm) BEOWCOUNT LOG WELL GRADED SAND (SW): Yell-bm, fine-cse grained, hard, subang-submd, meal dense, homo, hydrocarbon odor. ~ 35~- 7oo 10 · sw 18 25 m 40 ~ ~ 8 · SW 11m SAME AS ABOVE 18 · iL SILT WITH SAND (MI.): Dk yell-bm, hard, 20% sand, fn-cse, homo, "m ~ hydro~afoon odor. ~ 50 ~ soo mm ~, m 8w wE,, GRADED SAND (SW): Redlshbm, fn-cse graJnedd, 50 subang-submd, very dense,homo, moist, mod hydrocarbon odor. imm 55 m 2~mO 12 · SW SAME AS ABOVE 10 60 ~ o 2o · T. D. Drilled 24m SM/ML SILT~' SAND/SANDY SILT (SM/ML): Reddish 60 Feet so brn-dkyellbm,dnese/hard, 50% fines, 50% sand, fn-med, homo, no ~ 65 AEC , ov, ,cEo P.O. BOX 40672 BAKERSFIELD, CA 93384 PROJECT Chico and the Man / Gene Bolton LOCATION 231 E. 18th Slmet, Bakersfield, California WELL/BORING .O. B-1 WELL PID ~I~MpLE ID I~ERVAL U.S.C.S. DETAIL DEPTH (ppm) BD:~WCOUNT LOG LI LOGIC DESCRIPTION SILTY SAND (SM): Dk yell bm, fn- cse, hrd. 60% sand, 40% fines, ~ 5 ~ 0 SM moist, no odor. GRAB ~ 10 ~ 150 20 I sP POORLY GRADED SAND (SP): Yell Bm. fn-med grelned. 25B subang-submd, hard, medium dense, homo, moist, no odor. 18 ~ 15 1900 19 · SP SAME AS ABOVE 26 ~ 20 --' 2500 26 SP SAME AS ABOVE ~ 25 -'-- 2500 45 SP SAME AS ABOVE ~ 30 ~ 2500 27 · ML no dry stmtgh, 60% fines, 40% sand, flne-med grained, 25I po~ srted, homo, moist, organics, strong hydrocaflxm odor. 26 AEC wcEo ~wBoN ENr co~c WELL/BORING LOG P.O. BOX 40~72 BAKERSFIELD, CA 93384 PROJECT Chleo and the Man l Gene Bolton LOCATION 231E. 18thS~'eet, Bakersfleld, Cellfomla WEL[JBORING NO. B-2 SURFACE ELEVATION WELLHEAD ELEVATION N~A DATE DRIU. ED 12/15/93 LOGGED BY J. Dunwoody REVIEWED BY J. DUNWOODY DRILUNG COMPANY S B & S Dfllllng Company DRIII FR Veto Sm#h METHOD HOLLOW STEM AUGER BORE HOLE DIAMETER 8 INCH TOTAL DEPTH 60' DEPTH TO WATER: INITIAL N~A_ STATIC_NIA ..... CASING TYPE DIAMETER SCHEDULE INTERVAL N{A -TO ...... SCREEN TYPE DIAMETER SLOT SIZE INTERVAl NIA__TO N/A FILTER PACK TYPE INTERVAL NIA TO ..... _N/A_ SURFACE SEAL TYPE Cement sand slum/over bentonite INTERVAL N/A ~TO N/A NOTES WELL DEPTH PID ~mmi~PLE ID ~RVAL U.S.C.S. DETAIL (ppm) BE)OWCOUNT LOG LI LOGIC DESCRIPTION WELL GRADED SAND (SW): Yell-bm, flne-cse grained, hard, subang-subrnd, meal dense, homo, hydrocarbon odor. -- 35-- 25oo 38 · SW m ,-~ 40 m 1900 39 · SW SAME AS ABOVE m 51 -- 45 -- 2soo 29 · ML SILT WITH ,~,ND (MI.): Dk yell-bm, hard, 20% sand, fn-cse, homo, m =. hydrocaJtxm odor. m -- s0 -- ~oo 38 m w~LL GRADED SAND (SW): Redlshbrn, fn-cse grained. 48m sw subang.$ubmd, very dense,homo, moist, mod hydrocarbon odor. -- 55 220 29 m SAME AS ABOVE 35m sw SILTY SAND/SANDY SILT (SM/ML): Redlsh ~ 60 ~ 0 29 m brn-dkyellbm,dnese/hard, 50% flne~, 50% sand, fn-med, homo, no T. D. Drilled 35m SM/ML 60 Feet odor. -- 65 AEC co~c .r WELL/BORING LOG P.O. BOX 40~X£ BAI~RSFIELO, CA ~ PFIOJ£OT Chl~o ~nd lhe M~n ! G~r~ 8ol~on LOCATION Z~ E. ~ 8th 8'~t, Bek~fl~d, Cellfoml~ I/~FIINO NO. PID ,a~aPLE ~O U.S.C.S. .,~ WELL DEPTH ~RVAL LIi'~r?LOGIC DESCRIPTION DETAIL (ppm) BEOWCOUNT LOG SILTY SAND (SM): Dk yell bm, fn- cse, hrd, 60% sand, 40% fines, ---' 5 o GRAB SM moist, no odor. ~ 10 ~ o 18 ~ SP 22 POORLY GRADED SAND (SP): Yell Bm, fn-med grained, -- 35B subang-submd, hard, medium dense, homo, moist, no odor. ~15 ~ 0 22 16 · SP SAME AS ABOVE m 20 .... 75 29 29 · SP SAME AS ABOVE 31 m 25 .--- 2s0o 28 · SP. SAME AS ABOVE 32 30 2500 SANDY SILT (MI.): Gmblue - gry, very stiff, Iow plastic, 29 I ML no dry s'~ntgh, 60% fines, 40% sand, flne-med grained. T, D. Drilled 35· poorly srted, homo, moist, organics, strong hydrocarbon odor. 30 Feet 40 AEC , ov=c o ENVIRONMENTAL CONCEPTS WELL/BORING LOG 1 of 1 P.O. BOX 40~7E BAKERSFIELD, CA 93384 PROJECT. Chico and th__e_Man I Gene Bolton LOCATION _231 E. 18th S~'eet, Bakersfield, California WELL/BORING NO. a-3 SURFACE ELEVATION WELLHEAD ELEVATION N/A DATE DRILLED 12/15/93 LOGGED BY J. Dunwoody REVIEWED BY J. DUNWOODY DRILUNG COMPANY S B 8, S Drilling Company DRILLER _3/em_Smith METHOD HOLLOW STEM_~_U_GER .__ BORE HOLE DIAMETER 8 INCH TOTAL DEPTH 30' DEPTH TO WATER: INmAL N/A STATIC___~A .... CASING TYPE DIAMETER SCHEDULE INTERVAL N~A TO __N_IA___ SCREEN TYPE DIAMETER. SLOT SIZE INTERVAL. NIA .TO N/A FILTER PACK TYPE INTERVAL_ NIA TO __ _N/~A_ SURFACE SEAL TYPE Can3ant sand slurry over benton_~E.e INTERVAL NIA .TO N/A NOTES WELL DEPTH PID PLE ID DETAIL (ppm) aLOWCOUNT LOG LI LOGIC DESCRIPTION ~ 5 m O SM SILTY SAND (SM): Dk yell bm, fn- cse, hrd, 60°,4, sand, 40% fines, GRAB moist, no odor. SP ~ 10-- 0 22 I POORLY GRADED SAND (SP): Yell Bm, ~med grained, 25 subam3-submd, hard, medium dense, homo, moist, no odor. 15 ~ 0 sp 35 SAME AS ABOVE m 20 m 0 28 SP 35 m SAME AS ABOVE -- 25 -- 50 SP 29 · SAME AS ABOVE 30 25 39 I ML SANDY SILT (ML): Gmblue - gry, ve~ stiff, Iow plastic, "m no dr~ strntgh, 50% fines, 4O% sand, flne-med grained, 50 poorly srted, homo, moist, organics, strong hydrocarbon odor. AEC AOVA~CEOENV/RO~M ~r CO~CEPTS WELL/BORING LOG of 2 P.O. BOX 4067E BAKERSFIELD, CA 93384 PROJECT ChleoendtheManlGoneBolton LOCATION 231E. 18thSl~'eet, Bakersflaid, Caiifomla WELL/BORING NO.B-4SURFACE ELEVATION WEM.HEAD ELEVATION NIA DATE DRILLED 12/lS/93 LOGGED BY J. Dunwoody REVIEWED BY. J. DUNWOODY DRILUNG COMPANY S B & S Drillin¢l Coml~any DRILLER Veto Smith METHOD HOLLOW STEM AU~.E_R__.. BORE HOLE DIAMETER 8 INCH TOTAL DEPTH 60' DEPTH TO WATER: INITIAL __N_/A STATIC _N/A CASING TYPE DIAMETER SCHEDULE INTERVAL N~A. ~TO ....... _NJA_ .... SCREEN TYPE DIAMETER SLOT SIZE INTERVAL NIA TO N/A FILTER PACK TYPE INTERVAL NIA TO __ _NI~ SURFACE SEAL TYPE Cement sand slurry over bentonite INTERVAL NIA .TO NIA NOTES ,~iI,PLE ID U.S.C.S. ~,., WELL DEPTH PID tRVAL LIT~vGIC DESCRIPTION DETAIL (ppi) BI:ffWCOUNT LOG -- 3 5 ~ 180 18 m ~, w.. GRADED SAND (SIN): Yell-bm, flne-cse grained, hard, 22 subang-submd, reed dense, homo, hydrocarbon odor. ~o -- 78 ~ m sw SAME AS ABOVE 28 -- 45 ~ 7s ~ m ML SILT ~ SAND (MI_): Dk yell-bm, hard, 20% sand, fn-c~e, homo. slreng hydrocarbon odor, [] m 50 ~ 25 28 m sw WELL GRADED SAND (SW): Redishbm, fn-cse grainedd, 29m subang-submd, very dense,homo, moist, mod hydrocarbon odor. - 55 - o s · SAME AS ABOVE __ 12m 10 SIL~f SAND/SANDY SILT (SM/ML): Reddish ~o -- o 20· bm-dkyellbm,dneae/hard, 50% flne~, 50% sand, fn-med, homo, no T. D. Drilled __ 24 m SM/ML 60 Feet 5o 65--- AEC .~vANcE~ E~,O~,E~A. co~c~prs WELL/BORING LOG ~ o~ ~ P.O. BOX4067'2 BAKERSFIELD, CA 93384 PROJECT Chl~o and the Man ! Gene Bolton LOCATION 231 E. 18th Street, Bakersfield, California WELUBORING .O. B-4 Advanced EnvirOnmental Concepts, Inc. - . · . , , .. ..: .... . .-._' . ' , .....,~, ;' - ~.. · , ~ '%'~.;,~. '- . · ,..,.' , _ .-. ,. ,"-..~.'.'. ~:' ;,. ';i',.~'~. LABORATORY REPORTS I. '"-"" ~'" ~HAIN-('3F-(~J ISTODY' DOCUMENTS - '~- . - , .., -.: ..:,. ..,. ... .. ,.,' ",'..:..~! ;. '~'.. ~ ~'-~ ~. :,~-;, -- · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND ASSOCiATED LABORAK)RES 806 North Batavia-Orange, California 92668-714/771-6900 FAX 714/558-1209 CE-IENT Advanced Environmental Concept (4283) LAB NO. ' G64635-01 Attn: Jon Buck 4400 Ashe Road REPORTED 12/30/93 Suite #206 Bakersfield, CA 93313 SAMPLE Soil RECEIVED 12/16/93 IDENTIFICATION Chico & The Man 231 E. 18th, Bakersfield, CA BASED ON SAMPLE As Submitted Bl-20' B1-30' B1-40' Total Hydrocarbons (TPH DHS) (mg/kg) -Gasoline ND< 5 ND< 5 11 Benzene (mg/kg) ND< 0.005 ND< 0.005 0.80 Toluene (mg/kg) ND< 0.005 ND< 0.005 2.0 Ethylbenzene (mg/kg) ND< 0.005 ND< 0.005 0.11 Total Xylenes (8020) (mg/kg) ND< 0.015 ND< 0.015 0.93 Date Analyzed: 12/24 & 27/93 by: Ed . ~,.j · B~h~re, Ph.D.~-~ V?~Pr~ident ESB/ql NOTE: Unless notified in writing, all samples will be discarded by appropriate disposal protocol 30 days from date reported. TESTING & CONSULTING Chemical. The reports of the Associated Laboratories are confidential property of our clients and Microbiological · may not be reDrocluced or used for publication in Dart or in full without our written permission. This is for the mutual protection of the public, our clients, and ourselves. EnWronmental · ASSOCiAT,ZD LABORATORIES 806 North Bata~a- Orange, California 92668- 714/771-6900 '~ FAX 714/558-1209 CLI~ENT Advanced Environmental Concept (4283) LAB NO. G64635-02 Attn: Jon Buck 4400 Ashe Road REPORTED 12/30/93 Suite #206 Bakersfield, CA 93313 SAMPLE Soil RECEIVED 12/16/93 IDENTIFICATION Chico & The Man 231 E. 18th, Bakersfield, CA BASED ON SAMPLE As Submitted B1-50' B1-55' B1-60' Total Hydrocarbons (TPH DHS) (mg/kg) -Gasoline 13 19 ND< 5 Benzene (mg/kg) ND< 0.005 0.08 ND< 0.005 Toluene (mg/kg) ND< 0.005 0.15 ND< 0.005 Ethylbenzene (mg/kg) ND< 0.005 ND< 0.005 ND< 0.005 Total Xylenes (8020) (mg/kg) ND< 0.015 0.06 ND< 0.015 Date Analyzed: 12/24 & 27/93 E ~'~. e ,:' Ph.D. ~ ~ Vice President ESB/ql NOTE: Unless notified in writing, all samples will be discarded by appropriate disposal protocol 30 days from date reported. TESTING & CONSULTING Chemical · The reports of the ,~ssociated Laboratories are confidential property of our clients and Microbiological. may not be reproduced or used for publication in part or in full without our written permission. This IS for the mutual protection of the public, our clients, and ourselves. EnWronmentol · ASSOCIATED LABORATORIES 806 North Batavia - Orange, Calitornia 92668 - 714/771-6900 FAX 714/538-'1209 CLIENT Advanced Environmental Concept (4283) LAB NO. G64635-03 Attn: Jon Buck 4400 Ashe Road REPORTED 12/30/93 suite #206 Bakersfield, CA 93313 SAMPLE Soil RECEIVED 12/16/93 IDENTIFICATION Chico & The Man 231 E. 18th, Bakersfield, CA BASED ON SAMPLE As Submitted B2-15' B2-25' B2-30' Total Hydrocarbons (TPH PHS) (mg/kg) -Gasoline 4,300 2,600 9,800 Benzene (mg/kg) ND< 0.005 0.20 45 Toluene (mg/kg) 2.2 35 910 Ethylbenzene (mg/kg) 4.3 40 250 Total Xylenes (8020) (mg/kg) 380 300 1,400 Date Analyzed: 12/24 & 27/93 AS$O ATED' $ T R ES, by: Ed .... ~ Vice Presiden ESB/ql NOTE: Unless notified in writing, all samples will be discarded by appropriate disposal protocol 30 days from date reported. TESTING & CONSULTING Chemical · The reports of the Associated Laboratories are confidential property of our clients and Microbiological · may not be reproduced or used for publication in part or in full without our written permission. This 15 for the mutual protection of the public, our clients, and ourselves. EnWronmental · ASSOCiATED LABORAIORI£S 806 North Batavia- Orange, Calitornia 92668- 714/771-6900 '~ FAX 714/558-1209 CL-IENT Advanced Environmental Concept (4283) LAB NO. G64635-04 Attn: Jon Buck 4400 Ashe Road REPORTED 12/30/93 suite #206 Bakersfield, CA 93313 SAMPLE soil RECEIVED 12/16/93 IDENTIFICATION Chico & The Man 231 E. 18th, Bakersfield, CA BASED ON SAMPLE As Submitted B2-35' B2-40' B2-45' Total Hydrocarbons (TPH DHS) (mg/kg) -Gasoline 2,700 14,000 39 Benzene (mg/kg) 2.7 190 0.23 Toluene (mg/kg) 130 1,500 2.0 Ethylbenzene (mg/kg) 55 370 0.56 Total Xylenes (8020) (mg/kg) 350 2,000 3.4 Date Analyzed: 12/24 & 27/93 A O¢ TE ABO ?flR ES, by: Vice President ESB/ql NOTE: Unless notified in writing, all samples will be discarded by appropriate disposal protocol 30 days from date reported. TESTING & CONSULTING Chemical · The reports of the Associated Laboratories are confidential property of our clients and Microbiological · may not be reproduced or used for publication in part or in full without our written permission. This iS for the mutual protection of the public, our clients, and ourselves. EnWronrnental · ASSOCiA173D LABORAIORIES 806 Nort~J BAtm~A-OmAge, Ca]J'/oJ'AJe 92668-714/77J-6900 fAX 7J4/538-1209 CLIENT Advanced Environmental Concept (4283) LAB NO. G64635-05 Attn: Jan Buck 4400 Ashe Road REPORTED 12/30/93 Suite #206 Bakersfield, CA 93313 SA~4PLE Soil RECEIVED 12/16/93 IDENTIFICATION Chico & The Man 231 E. 18th, Bakersfield, CA BASED ON SAMPLE As Submitted B2-50' B2-55' B2-60' Total Hydrocarbons (TPH DHS) (mg/kg) -Gasoline 4.6 10 15 Benzene (mg/kg) ND< 0.005 0.08 ND< 0.005 Toluene (mg/kg) 0.85 0.02 ND< 0.005 Ethylbenzene (mg/kg) ND< 0.005 0.01 ND< 0.005 Total Xylenes (8020) (mg/kg) 0.20 0.10 ND< 0.015 Date Analyzed: 12/24 & 27/93 A '6e ATED% O , OR ES, Edwaf%~ SI Benare, Ph.D. Vice PreSident ESB/ql NOTE: Unless notified in writing, all samples will be discarded by appropriate disposal protocol 30 days from date reported. TESTING & CONSULTING Chemical · The reports of the Associated Laboratories are confidential property of our clients and Microbiological · may not be reoroc~uced or used for puPlication in part or in full without our written permission. This Is for the mutual protection of the Public, our clients, and ourselves. Enwronmental · ASSOCIATED I. ABO RIES 806 North Batavia-Orange, Calitornia 92668- ?14/~'71-6900 - FAX ~'14/558-1209 CLIENT Advanced Environmental Concept (4283) LAB NO. G64635-06 Attn: Jon Buck 4400 Ashe Road REPORTED 12/30/93 suite #206 Bakersfield, CA 93313 SAMPLE Soil RECEIVED 12/16/93 IDENTIFICATION Chico & The Man 231 E. 18th, Bakersfield, CA BASED ON SAMPLE As Submitted B3-20' B3-30' B4-30' Total Hydrocarbons (TPH DHS) (mg/kg) -Gasoline 42 2,700 70 Benzene (mg/kg) ND< 0.005 12 0.11 Toluene (mg/kg) ND< 0.005 200 1.5 Ethylbenzene (mg/kg) ND< 0.005 56 1.3 Total Xylenes (8020) (mg/kg) ND< 0.015 340 4.4 Date Analyzed: 12/24 & 27/93 A~SOCIATE .~LABO TORIES, by: E ~ .,"IS ' B h,D_ Vice President '~ ESB/ql NOTE: Unless notified in writing, all samples will be discarded by appropriate disposal protocol 30 days from date reported. TESTING & CONSULTING Chemical · The reports of the P, ssociated Laboratories are confidential property of our clients and Microbiological · may not be reproduced or used for publication in part or Jn full without our written permission. This is for the mutual protection of the pubtic, our clients, and ourselves. Enwranmentol · ASSOCIATED LABO RIES 806 North Batavia - Orange, Calitornia 92668- 714/771-6900 FAX 714/$$8-1209 CLIENT Advanced Environmental Concept (4283) LAB NO. G64635-07 Attn: Jon Buck 4400 Ashe Road REPORTED 12/30/93 suite #206 Bakersfield, CA 93313 SAMPLE Soil RECEIVED 12/16/93 IDENTIFICATION Chico & The Mall 231 E. lSth, Bakersfield, CA BASED ON SAMPLE As Submitted B4-50' B4-60' Total Hydrocarbons (TPH DHS) (mg/kg) -Gasoline 16 17 Benzene (mg/kg) ND< 0.005 0.02 Toluene (mg/kg) 0.Gl 0.10 Etbylbenzene (mg/kg? ND< 0.005 0.02 Total Xylenes (802u) (mg/kg) 0.039 0.16 Date Analvze,-]: 12/24 & 2'7/93 ASGOC~AT~R1TORIES'Ed.I~~SI~i~.~.~~i~ .7_~7T~,.j[-----~~y: Vice P~'o '"~ident~e ESS/ql ~OTE: Unless notified in w£~ting, all samples will be discarded by appropriate disposal protocol. 30 days from date reported. TESTING & CONSULTING Chemical · The reports of the ,Rssociated Laboratories are confidential property of our clients and Microbiological · may not be reproduced or used for publication in part or in full without our written permission. This iS for the mutual protection of the public, our clients, and ourselves. Enwronmentol · ~SSOCIATED LABORATOIU~ · COMMI~4ENT TO QUALITY ' QUALITY CONTROL/QUALITY ASSURANCE REPORT G64635 QA/QC CONTROL NO. G64689 INSTRUMENT LOGBOOK Hyd 1-6 DATE G64689 ANALYZED Dee 23 1993 I.L.B. PAGE LOCATION 53 DATE G64635 ANALYZED Jun 23 1993 SAMPLE LOG PAGE LOCATION 35 EPA 8020 REPORTING UNITS SAMPLE MATRIX soil mg/kg COMPOUND SR SR1 RPD S.A. $SR $SRI %RE %REI RPD BLK BENZENE 0 0 0 0.05 0.054 0.046 108 92 16 0 E TH YLBENZENE 0 0 0 O. 05 O. 052 O. 048 104 96 8. 8 0 XYLENES 0 0 0 O. 15 O. 16 O. 149 107 99 7. 8 0 CHLOROBENZENE 1,2-DICItLOROBENZENE 1,3-DICHLOROBENZENE 1, 4-D ICHL OROBENZENE . AV aE [0 J It°z I°z I I SR ....... SAMPLE SRI ..... SAMPLE DUPLICATE RPD---- RELATIVE PERCENT DIFFERENCE S.A.---- ANALYTE SPIKE IN SAMPLE MATRIX SSR ..... SPIKE RECOVERED AND SAMPLE SSRI .... SPIKE RECOVERED AND SAMPLE 'SRI' %RE .... PERCENT RECOVERY OF SPIKE IN 'SR' %REI--- PERCENT RECOVERY OF SPIKE IN 'SRI' BLK ..... ANALYTE CONCENTRATION DL:FECI'ED IN LAB BLANK 99% ..... UPPER/LOWER CONTROL LIMFF 95% ..... UPPER/LOWER WARNING LIMFF s .......... STANDARD DEVIATION 2s ........ 2 x STANDARD DEVIATION (WARNING LIMIT) 3s ........ 3 x STANDARD DEVIATION (CONTROL L1MIT) MEAN-- TIME WEIGHTED AVERAGE OF SPIKE RECOVERY SURROGATE SPIKE DATE BENZENYL FLUORIDE SPIKE CONCENTRATION OF 150 ng WITH A RECOVERY OF 79 70 BENZENYL FLUORIDE RECOVERY LIMFFSOFSI 70 TO 129 PASS / NO PASS ,/~_/9~ DATE TYPED Dee 29 1993 AI33201 ACTION TAKEN SPIKE SOURCE EPA Repository Dil. STANDARD LOT NO. BTX 40893 ANALYST Rick Corm QA / QC COMP1LER ~SSOCIATED LABORATOR~ · COMMtlM£NT TO QUALITY ' QUALITY CONTROL/QUALITY ASSURANCE REPORT G64635 QA/QC CONTROL NO. G64689 INSTRUMENT LOGBOOK Hyd 1-6 DATE G64689 ANALYZED Dee 23 1993 I.L.B. PAGE LOCATION 53 DATE G64635 ANALYZED Dec 23 1993 SAMPLE LOG PAGE LOCATION 35 EPA 8015M/D.H.S.L.U.F.T. REPORTING UNITS mg/kg SAMPLE MATRIX soil COMPOUND SR SRI RPD S.A. SSR SSRI %RE %RE1 RPO BLK GASOLINE 0 0 0 5 5.4 5. 7 108 114 5 0 DIESEL .. AWE~aE [0 ] II°s III4 I 5 I SR ....... SAMPLE X O $RI ..... SAMPLE DUPLICATE RPD---- RELATIVE PERCENT DIFFERENCE S.A.---- ANALYTE SPIKE IN SAMPLE MATRIX SSR ..... SPIKE RECOVERED AND SAMPLE SSR I .... SPIKE RECOVERED AND SAMPLE '$Rl' %RE .... PERCENT RECOVERY OF SPIKE IN 5gREI--- PERCENT RECOVERY OF SPIKE IN 'SRI' BLK ..... ANALYTE CONCENTRATION D~I'ECYED IN LAB BLANK 99% ..... UPPER/LOWER CONTROL LhMIT 95%-~--- UPPER/LOWER WARNING LIMIT s .......... STANDARD DEVIATION 2s ........ 2 x STANDARD DEVIATION (WARNING LIMIT} 3s ........ 3 x STANDARD DEVIATION (CONTROL LIMIT) MEAN-- TIME WEIGHTED AVERAGE OF SPIKE RECOVERY SURROGATE SPIKE DATE BENZENYL FLUORIDE SPIKE CONCENTRATION OF WITH A RECOVERY OF BENZENYL FLUORIDE RECOVERY LIMITS OF TO ff'ff'~//J~ DATE TYPED Dec 29 1993 BI33201 PASS / NO PASS ACTION TAKEN SPIKE SOURCE SH-R STANDARD LOT NO. Gas 52093 ANALYST Danielle Lujan QA / QC COMPILER /a]/~,'~ ~ CHAIN-OF-CUSTODY RECORD Project Address ~ ~ ~b Use Only. Turn Around R~uest~: ~ ~ S~ple ~i~ (;uS" Analysis Requested ~.. ot o~e ~b Use OnlY. S~pte Co~iti~ Turn Around R~ue~: Chi~ed y~ I No S~ed ~ 24-H~'~u5b ~ 4B.Ho~-R~h ~m~ 0 ii Total Humber of container: t ) Date ~ Time wre} ~ ~E ~ T~me ~ 1831'1~ ~FtELt T~me =ADVANCED ENVIRONMENTAL CONCEPTS INC= August '19, '1994 · Ms. Flora Darling Kern County Environmental 'Health Department 2700 "M" Street, Suite 300 Bakersfield, California 9330'1 Regarding: Vapor Extraction Work Plan for Gasoline Impacted Soil Chico and the Man Service Station 23'1 East '18th Street Bakersfield, California Dear Ms. Darling: Advanced Environmental Concepts, Inc. (AEC) has prepared the Environmental Site Assessment Report for the above referenced project/location. Enclosed please find that report, which AEC is submitting for review. Should you have any questions or require clarification on any aspects of the enclosed, please do not hesitate to contact our office at (805] 83~-~646. Respectfully yours, Advanced Environmental Concepts, Inc. Attachments: Report ['1 ] Distribution: ~ / Addressee l/Mr. Gene Bolton '1/Bksfld File LETP.34CG · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MINE] * 4400 ASHE ROAD. #206 ', BAKERSFIELD· CA 93313 805/831-1646 * FAX 805/831-1771 NORTH ~ Illllllllllllllllllill~l! __----- / __-== ____-: __------ :- ,.~,.,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,~__~ .,A ! -~--1' - ~ - Vadose W~eli Locations- FIGURE P.(x eox4m/~ ~ c~ ~ Ceanty o~ Kern · ~ Caiifemla '1 FORI~ TANK PIT · SOIL BORING LOCATION 1'-10' AEC .v,,o,~ Well Location Map.- FIGURE P.O~ gOX 40r~ B4~R~q~L~ CA m~'I · ADVANCED ENVIRONMENTAL CONCEPTS INC- Advanced Environmental Concepb, Inc. is pleased to present the following: Vapor Extraction Work Plan for Gasoline Impac~od Soil Chico and the Man Service Station 234 East 48a Street County of Kern · Bakersfield, California This work plan h~.,~ I~::cn prepared for: Gene Bolton, Pro-Tech Specialties Prepared: June 4994 · ENVIRONMENTAL CONCEPTS WITH OESIGN IN MINO 4400 ASHE ROAD. #206 · BAKERSFIELD. CA 93313 805/831-1646 · FAX 805/831-1771 Vapor Extraction Work Plan Advanced EnVironmental Concepts, Inc. Table of Contents Page 1.0 INTRODUCTION I t .t Purpose I 1.2 Scope of Work I t .3 Schedule 2 2.0 BACKGROUND 2 3.0 WORK PLAN 4 3.1 Well Locations and Depths 5 4.0 METHODS 5 4.1 Boring Methods 5 4,2 Soil Sampling 5 4.3 Field Screening of Soil Samples 6 4.4 Soil Analysis 6 4,5 Installation of Vapor Extraction Wells 6 4.6 Source Testing 6 4.7 Regenerative Thermal Oxidizer Operation 7 5.0 SITE SAFETY PLAN 8 6.0 REMARKS / SIGNATURES 9 FJaures: t) Site Location Map 2] Site Map/Well Locations 3] Cross Section/Screened Intervals 4] Vapor Extraction Well Design Appendices: A] Health and Safety Plan BI Material Safety Data Sheets Project: AEC 94C-1464 · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND · 4400 ASHE ROAD. #200 · BAKERSFIELD, CA 93313 805/831-1640 · FAX 805/831-1771 Vapor Extraction Work Plan Advanced Environmental Concepts, inc. t .0 INTRODUCTION Mr, Gene Bolton, of Pro-Tech Specialties and representing Mrs. Nelsen, owner of the property, has authorized Advanced Environmental Concepts, Inc. (AEC) to prepare the following work plan for }he remediation of gasoline-impacted soil via vapor extraction at the Chico and the Man Service Station facility (Rgure t), The site address is 231 East 18a' Street, Bakersfield, California. The lead agency for this project is the Kern County Environmental Health Services Department (KCEHSD), represented by Ms. Flora Darling, Hazardous Materials Specialist. Specific locations of the borings drilled during AEC's investigations and the proposed vapor extraction wells are shown on Figure 2. 1.1 Purpose The soil remediatlon program described in this work plan has the following objectives: · Install four vapor extraction wells proximal to the center of the gasoline plume and three inlet wells outside the plume; · Manifold the vapor extraction unit (internal combustion/catalytic converter/carbon canister] to the wells and conduct the Soil remediation program. 1.2 Scope of Work The scope of services described in this work plan include: I. Locating underground utilities using available property owner information as well as the Underground Service Alert [USA]. 2. Advancing seven soil borings in the vicinity of the former underground storage tanks [UST's] and completing them as vapor extraction/inlet wells. 3. Vadose wells will be advanced to depths between 25 and 60 feet BGL. The augers will be steam-cleaned prior to drilling the borings to avoid cross-contamination. 4. Soil samples will be collected at predetermined depths to be evaluated in the field. As planned, samples will be collected at approximate 5-foot intervals to total depth in each well. The samples will be collected using a standard California split-spoon sampler. Brass tubes will be steam- cleaned prior to use. The samples will be field-screened and selected samples will be chosen for chemical analysis. 5. Field-screening will be accomplished using a photoionization detector [PID] with a 10.0 eV lamp. 6. Soil samples for chemical analyses will be collected in brass tubes and sealed with end caps and tape.' The sealed tubes will immediately be Project: AEC 94C-t464 · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND Vapar Extraction Work Plan Advanced Environmental Concepts, Inc. placed in a cooler chilled with Blue Ice to be transported to a State- certified laboratory under chain-of-custody protocol. 7. Selected soil samples will be analyzed for total petroleum hydrocarbons as gasoline (TPH-g] and volatile aromatics [BTXE], using EPA methods 8015 Modified and 8020 respectively. 8. Vapor extraction wells will be installed in the soil borings according to the design illustrated in Figure 4. 9. Field boring logs will be prepared as will the vapor extraction Well construction details. 10. Install and operate the vapor extraction system (VES] as described in Sections 3 and 4. Install a security enclosure around the vapor extraction equipment. 1 I. Prepare a final report which describes the results of the soil investigation and mitigation. Data included will be drilling methods, sampling methods, chemical analytical results, and conclusions. A summary of the installation and operation of the vapor extraction system will also be. presented. 1.3 Schedule Advanced Environmental Concepts, Inc. anticipates beginning the work described in this work plan within lwo weeks of approval by KCEHSD and authorization to proceed from Mr. Gene Bolton. Drilling will commence only after applicable county permits have been obtained. The soil borings are expected to be completed within one week of mobilization to the site. Installation of the vapor extraction wells in the soil borings will be completed concurrently. Pending approval to construct and operate the VES by the Kern County Air Pollution Control District, AEC will install the VES unit. Remediation is expected to take approximately six months once vapor extraction is initiated. Periodic vapor testing will be conducted to monitor progress. If such testing indicates remediation has been accomplished Within a shorter time frame, a confirmation boring will be advanced. Once laboratory confirmation of remediation is obtained and found to be within KCEHSD guidelines, the VES equipment will be disengaged. Equipment removal is expected to be accomplished within lwo weeks of confirmation of remediation. A final report will be prepared summarizing all field remedial operations and laboratory results. The report will be provided within one month of mitigation. 2.0 BACKGROUND On April 21, 1989 Valley Tree Construction supervised the excavation, removal, and disposal of four (4) gasoline UST's from the subject site. Very strong'gasoline odors were noted in the soil Project: AEC 94Cd464 2 · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND · Vapor Extraction Work Plan Advanced Environmental Concepts, Inc. during the excavation procedures. Former tank locations and sample locations are presented on Figure 2 (Appendix A). The analytical results of soil samples collected from below the removed UST are presented in Table t. Units are in milligrams per kilogram (mg/kg) which are equivalent to parts per million (ppm). Table t Analytical Results - Soil Samples Tank Removal 412tl89 [ppm] Sample I.D. TPH-g Benzene Toluene Xylenes Ethylbenzene TH-t-2' 6900 3t0 920 t210 220 TH- 1-6 5600 2 I0 690 1085 190 TH-2-2' 4300 t50 550 670 140 TH-2-6 7000 230 930 1520 280 TH-3-2' 5000 85 490 1230 . 2 I0 TH-3-6 2500 15 100 472 70 TH-4-2' ND ND ND ND ND TH-4-6' ND ND ND ND ND TH-5-2' ND ND ND ND ND TH-5-6' ND ND ND ND ND TH-6-2' ND ND ND ND ND TH-6-6 ND ND ND ND ND TH-7-2' ND ND ND ND ND TH-7-6' ND ND ND ND ND TH-8-2' ND ND ND ND ND TH-8-6 ND ND ND ND ND TH-9-2' ND ND ND ND ND TH-9-6 ND ND ND ND ND Detection Umll: t.0 2.0 2.0 5.0 2.0 ND: Non-detected TPH-g: Total Petroleum Hydrocarbons as gasoline Based on these results, KCEHSD required that a site assessment evaluating the lateral and vertical extent of hydrocarbon impacted soil be performed. On December '12, '1993, four [4] soil borings (B-'l, B-2, B-3, and B-4] were drilled on the subject property. The borings were positioned to evaluate the vertical and horizontal extent of the hydrocarbon migration and advanced using a truck-moUnted Mobile B-61 drill rig, equipped with Project: AEC 94C-1464 3 * ENVIRONMENTAL CONCEPTS WITH DESIGN IN MINE] * 4400ASHEROAO.#206 · BAKERSFIELD. CAg3313 805/831-1646 · FAXS05/831-1771 Vapor Extraction Work Plan Advanced EnVironmental Concepts, Inc. 8-inch O.D. continuous flight, hollow-stem augers. Borings 1, 2, and 4 were drilled to a total depth of 60 feet BGL and boring 3 was drilled to 30 feet BGL. Selected soil samples from these borings were submitted to Associated Laboratories, Inc., of Orange, California and analyzed for total petroleum hydrocarbons as gasoline (TPH-g] and volatile aromatics [BT×E) using CA DHS and EPA 8020 method, respectively. The analytical results are presented in Table 2. Units are in milligrams per kilogram ling/kg], which are equivalent to parts per million [ppm]. TABLE 2 Analytical Results Soil Borings 12115t93 [pprn} Sample I.D. TPH-g Benzene Toluene Xylenes Ethylbenzene BI-20 ND ND ND ND ND B1-30 ND ND ND ND ND Bt-40 11 0.80 2.0 0.93 0.11 BI-50 13 ND ND ND ND BI-55 19 0.08 0.15 0.06 ND BI-60 ND ND ND ND ND B2-15 4300 ND 2.2 380 4.3 B2-25 2600 0.20 35 300 40 B2-30 9800 45 910 1400 250 B2-35 2700 2,7 130 350 55 B2-40 14000 190 t500 2000 370 B2-45 39 0.23 2.0 3.4 0.56 B2-50 4.6 ND 0.85 0.20 ND B2-55 10 0.08 0.02 0.10 0.01 B2-60 15 ND ND ND ND B3-20 42 ND ND ND ND B3-30 2700 t 2 200 340 56 B4-30 70 0.11 1.5 1.3 4.4 B4-50 16 ND 0.01 0.039 ND B4-60 17 0.02 0.t 0.t6 0.02 D.L.(mg/kg) t .0 0.005 0.005 0.005 0.005 ND: Non-detected at indicated limit of detection D.L. Detection Limit 3.0 WORK PLAN Advanced Environmental Concepts, Inc. proposes to install seven vadose wells in the hydrocarbon plume area to effect remediation. These wells will be manifolded below grade and equipped with traffic boxes to protect the wellheads. Each well will be equipped with a valve which permits configuration as either an ambient air intake or a vapor extraction well. The Project: AEC 94C-1464 4 · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND * 4400 ASHE ROAD. #206 * BAKERSFIELD. CA 93313 805/831-1646 · FAX 805/831-1771 Vapor Extraction Work Plan Advanced Environmental Concepts, Inc. manifolding will'be connected to an aboveground internal combustion/catalytic converter vapor extraction unit. 3.1 Well Locations and Depths A total of 7 vadose wells will be installed at the subject site. ~will be installed with in the hydrocarbon plume to s~e_L~e as extraction wells and three Inlet wells outside the plume. The extraction wells will be constructed qs nested w~lls and completion zones will be stagg~¥ed in such a manner that covers the entire plume area. The inlet wells will be screened at intervals that allow them to service the entire plume. Vadose well locations are plotted on Figure 2. Well positions and screened intervals are presented in cross sectional view on Figure 3 and a typical well construction diagram is shown on Figure 4. 4.0 METHODS The methods to be employed during implementation of the above scope of work are described in the following sections. 4. t Boring Melhods The borings will be advanced using a Mobile Drill B-61 rig, or equivalent, with a 10-inch diameter, hollow-stem, continuous-flight auger In accordance with ASTM Method D 1452-80 for soil investigations and sampling by auger borings. At no time shall any water or other liquid be added to the boring. The augers will be steam-cleaned prior to drilling the borings. The lithology and other pertinent data will be recorded on a field boring log in accordance with ASTM Method D 2488-84 for visual description and identification of soils. Cuttings from the borings will be placed in appropriate 55-gallon containers or on sheets of plastic and covered until verified with analytical results, whether or not the soil is contaminated. 4.2 Soil Sampling Soil samples will be collected through the auger In 2-inch diameter by 6-inch long brass sleeves driven in a split-spoon sampler by a 140-pound hammer with a 30-inch drop in accordance with ASTM Methods D 1586-84 for split-barrel sampling of soil and D 1587-83 for thin-walled tube sampling of soils. The brass sleeves and sampler will be washed in a trisodium phosphate (TSP) or Alconox solution and rinsed in clean, deionized water prior to each use. Soil samples will be collected at selected depths in each boring in order to provide baseline data and confirm prior laboratory results. The total depth of VE-2 will extend to 5 feet below the last detected indication of contamination. The blow counts, recovery, and lithology will be recorded on the field logs. Lithology will be described In accordance with ASTM Method D 2488-84 [Standard Practice for Description and Identification of Soils). Selected soil samples will be sealed with Teflon tape, capped, sealed with duct tape, labeled In accordance with EPA protocols, recorded on a chain-of- custody document, placed in a cooler chilled with Blue Ice at 4-degrees centigrade, and Project: AEC 94C-'1464 5 · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND · 4400 ASHE ROAD. #206 · BAKERSFIELD. ca 93313 805/831-1646 * FAX 8051831-1771 Vapor Extraction Work Plan Advanced Environmental Concepts, Inc. transported to a State-certified laboratory with the chain-of-custody for the specified analyses. 4.3 Field Scrccning of Soil Samples Soil samples will be collected using three 6-inch brass tubes installed inside a split-spoon sampler. The middle sample tube will be immediately capped and stored in an iced cooler upon collection. The battom tube will be used for lithologic description, and the top tube will be used for field screening. The soil collected in the top tube will be capped, and a headspace reading will be obtained using the PID. The standard headspace reading will be noted on the boring log. 4.4 Soil Analyses The soil samples will be analyzed by a California-certified laboratory utilizing State guidelines and EPA protocols. The samples will be analyzed for total petroleum hydrocarbons as gasoline by EPA method 8015 [Modified), and volatile aromatic organics by EPA method 8020. 4.5 Installation of Vapor Extraction Wells The vapor extraction wells will be constructed as shown on Figure 4 and installed in the following manner: The 2-inch, schedule-40, polyvinyl chloride [PVC] pipe will be flush- threaded and steam-cleaned prior to installation. Approximately 30 feet of 0.040-inch slotted PVC, an end cap, and sufficient blank casing to reach the surface will be installed through the auger. Aquarium sand will be poured down the auger while removing five feet of auger at a time. The filter pack will be placed two feet above the screened interval. Three feet of bentonite pellets will be poured and then hydrated to form a seal. The well-cover traffic boxes will be set in cement. The traffic boxes, control valves, and VES manifolding will be set in accordance with standard practice. 4.6 Source Testing Prior to obtaining a Permit to Operate the regenerative thermal oxidizer on a full time basis, a source test will be required to collect data demonstrating that the air flow from the effluent stack does not present a health and safety concern to the site employees or nearby population. The vapor extraction source test will consist of removing hydrocarbon laden vapors from the extraction wells for an anticipated period of 24 hours to achteve a steady state flow condition. Flow rates, organic vapor concentrations, and vapor temperature will be measured at the extraction wellhead, then recorded. The flow rate, vapor pressure, and vapor temperature of the blower influent and effluent will also be measured and recorded. Vapor samples will be obtained from the influent sampling ports and from the stack sampling port. Project: AEC 94C-~464 6 · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND · 4400ASHEROAD.#20{~ · E~AKERSFIELO. CA g3313 805/831-1646 * FAX 805/831-1771 Yapor Extraction Work Plan Advanced Environmental Concepts, Inc. Flow rates will be measured using manometers, installed at the extraction wellhead and blower influent. Pressure will be measured with a vacuum gauge at the extraction wellhead, and at blower influent and effluent sample ports/ Vapor temperature will be measured with dial thermometers installed at the extraction wellhead, and blower Influent. Vapor samples will be collected at the systems influent sampling port and at the effluent sampling port on the stack. Samples will be collected in Tedlar sampling bags and analyzed for total petroleum hydrocarbons as gasoline (I'PH-g] and volatile aromatics [BTXE). 4.7 Regenerative Thermal Oxidizer Operation The regenerative thermal oxidation system is designed for continuous operation 24 hours per day, 7 days per week until acceptable hydrocarbon levels have been achieved. The anticipated duration of this project is estimated at 6 months from the beginning of the extraction of vapors. The air/VOC stream enters the VES via a 4 Inch flanged connection. The entrainment separator/silencer is the first component within the process. Noise is also ,reduced before the air/VOC stream enters the vacuum pump. The flow, under positive pressure of approximately 37" of water column, passes over an I_EL sensor (ATt), flow measuring device [FEI, DPt ), and a static pressure measuring device [PS1). The LEL sensor is used to purge the system, and in some cases shut the entire system down. ATt, FEI, and DPI are used to calculate total pounds of VOCs destroyed and give valuable information concerning soil and well conditions. Static pressure is monitored to indicate blockages in the system. After the aforementioned instrumentation, the process stream enters the oxidizer Ia bed filled with silica gravel). The oxidizer contains silica gravel with heating elements located tn the center and perimeter. The main operating principles of the oxidizer are the thermal properties of the silica gravel and bi-directional flow. The oxidizer has flow parts at the top and bottom. The air/VOC process stream enters from one end of the oxidizer before entering the section of the oxidizer that contains the heating elements. After oxidation, the process stream exits through the opposite port. To capture the heat generated by the oxidation process the directional flow is switched by pneumatically actuated valving. Thus, what was the exit pad now becomes the entrance pod. The incoming air/VOC stream absorbs the thermal energy off of the silica gravel, and is close to oxidation temperature before entering the section of the oxidizer which contains the heating elements. The process stream exits the oxidizer via a 4" diameter stack. The hydrocarbon destruction efficiency of a regenerative thermal oxidation unit is in excess of 99% based on information relayed to AEC by the equipment manufacturer XlT Technologies. Emissions will be monitored daily during the first week of operation and weekly thereafter until project completion. Inlet vapor concentrations will be monitored continuously using an LEL sensor and cross-checked using a hand held GasTech LEL vapor sensor. Dilution air will be added manually to control the LEL and as remediation Project: AEC 94C-t464 7 · ENVIRONMENTAl_ CONCEPTS WITH DESIGN IN MIND · 4400 ASHE ROAD. #206 " BAKERSFIELD, CA 93313 805/831-1646 · FAX 8051831-1771 Vapor Extraction Work Plan Advanced Environmental Concepts, Inc. progresses the volume of dilution air required will be reduced and the hydrocarbon laden vapor will be more efficiently extracted. 5.0 SITE SAFETY PLAN A Site Safety Plan is included as Appendix A which complies with Worker Right-to-Know Regulations and CAC Title 26. Material Safely Data Sheets are presented in Appendix B. Project: AEC 94C-1464 8 · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND * 4400 ASHE ROAD. #206 * EIAKERSFIELD. CA93313 805/831-1040 · FAX805/831-1771 Vapor Extraction Work Plan Advanced Environmental Concepts, Inc. 6.0 REMARKS I SIGNATURES This work plan represents the professional opinions of Advanced Environmental Concepts, Inc. These opinions are based on currently available data and were arrived at in accordance with accepted hydrogeologic and environmental engineering practices. No other warranty, expressed or implied, is given. This work plan has been prepared by: Advanced Environmental Concepts, Inc. This work plan has been reviewed by: //~Jc~seC'h A'. Dunwoody / Registered Geologist ~Er5134 DOCI6DZ Project: AEC 94C-t464 9 · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND * 4400 ASHE ROAD. #206 * EIAKERSFIELD. CA 93313 805/831-1646 ', FAX 805/831-1771 Advanced 'Environmental. Concepts. Inc. -.. . . .-... - .. ....' ,;~..-_ FIGURES '""- · ENVIROe,,IMENTAL CONCEPTS WITH DESIGN IN MI~'~) · :-~~~~, :~ *- ~- ~1' ' I~i ,, ~ ~ ~'~' i _', ~i~ {~.~:.. ~l~ ~.~' ~/*ii_ ~ ~ _~ ' ~'~,-- ,~L ~,,'...-// /I I ~IIiFII ~.ll ~,, ,__L~'JYt~ ,I i -- i I ~ ~ ~ - ' , ,.,~ ~-~ ~ ~ ~' i I~ ' ..,~.. -- ..~~ ~ ~~o , I ,. i~~ ::.'A /~:.:'. ~- = 'N ~-': o t I ' ':; -:C',' ';, ;~; ' ~ ~ ~ · , I · ~'~ u I I ,..x .......::..:..:. .,;.... ~ ~~~, ~ - , , I / ~i~ - Site Location Map- FIGURE 231 E~t 1 ~ ~r~t 1 AOWNCED E~RON.E~AL ~NC~ ~.0. aOX~ ~RSRE~, CA ~ ~un~ of Kern · B~ersfleld, CNEomia IIIIIIIIIII ' I iiiiIIIIII '1~ IIIIIIIIii ,llllllllll . · I ...~11IIII BUILDINGI / (~]) Bs i _:-- VACANT LOT 1.2e~ VE-8 I~ -: ",,('~:!:i:i:' t~~:::: "i"I, , ~,c~ . ........... ~ / ~ ~ _~----~ / i 1"' 10' / /'~ E~~,~ - Vadose Well Location Map- c~,. ~., M.. s.~ a.~FIGURE2 231 East 181h ~ p.o. eox 4or~ I P.O. BOX 4OE~ BAI~RSREL~ CA ~9884 Advanced Environmental Concepts, Inc. .. ~ ... ~.. . .- '..~-, ?'.;~; , ..,.,:.. · ~NVIRO~ENTAL ~S WITH DE~ ~ ~ · Vapor Extraction Work Plan Advanced Environmental Concepts, Inc. Health .& Safety Plan for Chico and the Man Service Station 231 East t8~ Street County of Kern · Bakersfield, California Introduction: A Site Safety Plan (SSP) has been designed to address safety provisions needed during the site soil assessment / remedlation. Its purpose Is to provide established procedures to protect all on-site personnel from direct skin contact, inhalation, or ingestion of potentially hazardous materials that may be encountered at the site. The SSP establishes personnel responsibilities, personal protective equipment standards, decontamination procedures and emergency action plans, Advanced Environmental Concepts, Inc. seeks to enter the Chico and the Man Service Station property for the purpose of drilling, soil sampling, and well installation. Soil samples will be collected during drilling operations. Each sample to be chemically analyzed will be collected in a brass sleeve, capped with lined plastic lids, sealed with tape and placed on Ice in a chilled cooler. Chain-of-custody protocol will be followed. Drilling equipment will be transported to the site and operated by: S B & S Environmental Drilling 3022 West Santa Aha Fresno, California 93722 Contractor's License ~560t75 This SSP describes means for protecting all on-site personnel from contamination or personal injury while conducting drilling and installation activities, As described below, we will strive to meet all requirements promulgated by the California Department of Health Services. Responsibilities of Key Personnel: All on-site personnel have been assigned key responsibilities. Mr. Jonathan Buck will serve as Project Manager and on-site Geologist. He will also serve as Site Safety Officer (SSO]. As SSO, Mr. Buck will assure that on-site personnel have received a copy of the SSP. Personnel will be required to document their full understanding of the SSP before admission to the site. Compliance with the SSP will be monitored at all times by the SSO. Appropriate personal protective equipment, as listed below, will be available and utilized by all on-site personnel. Prior to beginning work, the SSO will conduct a training session to assure that all personnel are aware of safe work practices, In the training session, personnel will be apprised of hazards at the site. The SSO will utilize Material Safety Data Sheets for information on compounds to be encountered. Project: AEC 94C-t464 I Vapor Extraction Work Plan Advanced Environmental Concepts, Inc, Mr. Buck will also be responsible for keeping field notes, collecting and' securing samples, and assuring sample integrity by adherence to chain-of-custody protocol. .All on-site personnel will take reasonable precautions to avoid unforeseen hazards. After documenting their understanding of the SSP, each on-site employee will be responsible for strict adherence to all points contained herein. Any deviation observed will be reported to the SSO and corrected. On-site emplayees are held responsible to perform only those tasks for which they believe they are qualified. Provisions of this SSP are mandatory, and personnel associated with on-site activities will adhere strictly hereto. Job Hazard Analyses: Hazards likely to be encountered on-site include those commonly encountered when operating any mechanical equipment, such as the danger of falling objects or moving machinery. Simple precautions will reduce or eliminate risks associated with operating such equipment. An excavation contractor has been employed to deliver and operate all excavating equipment. Qualified personnel only will have any contact with this equipment. All on-site personnel, including the excavation contractor and his employees, are required to wear hard hats when in close proximity to excavating equipment. Latex sampling gloves will be worn by persons collecting or handling samples to prevent exposure to contaminants. Gloves will be changed between samples. Used gloves are discarded in order to avoid cross-contamination. Proper respiratory equipment will be worn if vapor contamination levels on-site exceed State-mandated action levels; a photoionization detector will be used for this purpose. The action level requiring respiratory apparatus will be 5 ppm in the breathing space. Furthermore, no smoking, open flames, or sparks will be permitted on-site. Risk Assessment Summary: Exposure to chemicals anticipated on-site include gasoline, benzene, toluene, and xylenes (BTX). These chemicals represent hazards because they are moderately to extremely toxic, and most are highly flammable. Threshold Limit Values (TLV's), Short Term Exposure Limits (STEL's) and Toxicity levels [LD50, oral-rat], all in mglkg [ppm), are listed below: Compound TLV STEL Toxicity Gasoline 200 300 .... Diesel 50 75 .... Benzene t0 25 4894 Toluene t00 150 5000 Xylene ~ O0 '150 4300 Benzene is a known carcinogen. Praject: AEC 94C-1464 2 Vapor Extraction Work Plan Advanced Environmental Concepts, Inc. Exposure Monitorina Plan: A PID will be used to monitor vapor concentrations around the site. Should concentrations exceed TLV's, protective measures will be taken. Passive dosimeter badges will be placed in downwind locations if PID readings indicate high levels of volatile organics in the breathing space. Personal Protective Equipment: On-site personnel will have access to respirators with organic vapor cartridges. Replacement cartridges will be available on-site as needed. When handling samples, the on-site Geologist will wear latex gloves. Hard hats will be worn by all on-site personnel when in proximity to drilling equipment. Work Zones and Securily Measures: Access to the site will be restricted to authorized personnel. A set of cones, placards, or wide yellow tape surrounding the site will define the perimeter, if needed. The Project Manager will be responsible for site security. Decontamination Measures: Avoidance of contamination whenever possible is the best method for protection. Common sense dictates that on-site personnel avoid sitting, leaning or placing equipment on possible contaminated soil. All personnel will be advised to wash their hands, neck and face with soap and water before taking a break or leaving the site. Respirators will be washed with soap and water following each day's use. Excavation and sampling equipment used will be decontaminated by steam-cleaning. Sampling equipment will be decontaminated before each sample is taken. General Safe Work Practices: On-site personnel will be briefed each day in "tailgate" safety meetings as to the day's goals and equipment to be used. Anticipated contaminants and emergency procedures will be reviewed. Appropriate personal protective equipment will be worn and verified as correct by SSO, Including respirator fit. Excavation and sampling equipment will be steam-cleaned before being transported on-site. Split-spoon sampling equipment will be cleaned before each use. Augers will be steam-cleaned between borings. The on-site Geologist will oversee operations and log borings. The Sample Coordinator will assure that proper protocol is adhered to at all times regarding the collection and handling of samples. Praject: AEC 94C-1464 3 Vapor Extraction Work Plan Advanced Environmental Concepts, Inc. Trainin~l Requiremenls: The SSO will conduct a pre-site training session which will include explanations of MSDS forms, .,contaminant properties, warning signs, health hazard data, risk from exposure, and emergency First Aid. All pertinent chemicals are to be covered, and the SSO will assure that eveh/one fully understands site hazards. Medical Surveillance Pro~lram: According to CFR 29, 1910.t20, Paragraph If], employees who wear respirators thirty (30] days or more during one (1] year or who have been exposed to hazardous substances or health hazards above established permissible exposure limits are required to be medically monitored. All site personnel will be required to submit to a complete chemical, physical examination within the past year. Record KeeoinQ: Documentation will be kept on file regarding personnel exposed to contaminant hazards on the job site according to OSHA regulations. Documentation that employees have received training on the SSP, respiratory protection, MSDS forms, and all emergency procedures will be Included. These will be reviewed during the preliminary "tailgate" training meeting. Exposure records filed for each job will be kept for thirty years to meet requirements. Included in the files will be the names and Social Security numbers of employees, medical evaluations, on- the-job logs from entry to exit, First Aid administered, visits on-site by outside persons and personal air monitoring records. Contingency Plans: In the event of an accident, injury, or other emergency, the Project Director, Senior Project Manager, or other person, will notify the appropriate government agencies or individuals as follows: t. Kern County Environmental Health Department 2700 M Street Bakersfield, California 93301 [805] 861-3636 2. Police, Fire, or Ambulance Emergency 9-t-I 3. Nearest Emergency Hospital: Bakersfield Memorial Hospital 420 34~ Street Bakersfield, California 93301 [805) 327-1792 Project: AEC 94C-1464 4 Vapor Extraction Work Plan Advanced Environmental Concepts, Inc, I have read the preceding Health and Safely Plan and understand the contents herein: NAME: COMPANY Project: AEC 94C-t464 5 Advanced EnvironmentalConcepts, Inc. * ENVRONME~AL ~EP~ ~H OES~N ~ M~ * ' ' ' ~: . I J:AAL, U H'~,. ~AFETY DATA SHEET NOTE: NO REPRESENTATION IS MADE AS TO THE ACCURACY OF THE INFORMATION HEREIN. SEE PAGE 7 FOR CONDITIONS. UNDER WHICH DATA ARE FURNISHED. Trade Name and Synonyms 00351 UNLEADED REGULAR GASOLINE Manufacturer's Name Emergency Telephone No. Texaco Inc. ~914) 831-3400 exL. 204 Address P.O. Box 509 Beacon, NY 12508 Chemical Name and/or Family or Description Automotive Lead-Free Gasoline THIS PRODUCT IS CLASSIFIED AS: NOT HAZARDOUS: X HAZARDOUS.BY DEFINITIQN ND. IS) ! ' 2,5,10, 12 ON ATTACHED EXPLANATION ,SHEETS WARNING STATEMENT: DANGERI EXTREMELY FLA~BLE HARMFUL OR FATAL IF SWALLOWED HAY BE HARMFUL IF INHALED; HAY CAUSE IRRITATION HAY BE HARMFUL. IF ABSORBED THROUGH SKIN · ..-..~ .: .... ::z: :. :::::::::::::::::::::::::::::::::::: :.:::~:.: ;::~ :::':. :::::::::::::::::::::::::: ::~':::::::::~:::::: :::;:::: :i:.'::i:i:!;!ii!iiii~i:iiiii~.ii:iiiiii~:::i~i~i~.::~:=::::::::::::~::: :::;~ :iiii :::i:iiiii;jii~iiiiiiii!:!ii:~ii::;~:::~:~:::::~:::::::i:ii : ......... ' ......... ' ................................................ S ................................................ ~ ......................... i ........ ::i ::,.... ::i~.ij: ::jj.::j.i.!.::j.::.ij.i...::.::jj.'jjj.::.'j.'.'.'.'Ijj.'.'jjjJ 'jj Ti. JJ. JJJ JJJJi':JJJi ?:':. Protective Equipment (Type) Eyes: Chemical type goggles or face shield optional. Skin: Protective clothing such as uniforms, coveralls or lab coals should be worn. Launder or dry clean when so/ted. GLoves res/s- rant to chemicals and petroleum distillates required. Inhalation: SCBA or supplied air respiratory protection required for entry into tanks,vessels, or other confined spaces containing gasoline. Ventilation: Adequate to meet permissible concentrations. Permissible Concentrations: Air:The ACGIH (].985-86) TWA for gasoline is 300ppm; Texaco recommends a TWA of 100ppm. ,."" I':.-'-':':'.:;¥;'::: ;:;'::.:;:;: ;:1::::'::::::, ~:::'.:::;:;::,; ;:;:;.;:~L-'.:::~.:::':::: :::c:.:::':::.:t:::~'f-:.T ::;:::::;.,.::~-:::~-:::::~:::::::::.::.:. :-:.:.:t:.:.:.:: :.; ..;< :.~.~.~ :.:.~.:.~:.:.:.._.:.:,:.>:.:.:.~.:+:.:: ::::::::::::::::::::::: :.:?:+>>.,>>: :. > >..,.... + >> > >: + > >x< .....>:->> > :. > :·:.:.:-:->, + >: +: + :.-....-..:. >: +.....-.-. + .. - -- ...-...-, -. --..·...-,- < .-.-·- -.-...,-.........-.. -.--...,-.--.- '-'-' ',,...'.· First Aid Eyes: Flush with water for ii,teen minutes. Skin: Wash exposed areas with soap and water. Ingestiom Do NOT induce vomiting. May cause chemlcai pneumonitis. Call a physician. Inhalation: Should symptoms noted under physiological ef[ects occur, remove to fresh air. If not breathing, apply artificiat respiration. Otherlnstructions: Remove gasoline-soaked clothing. ~4. D. - Not Determined N.A. - Not AoPhcable ' - '--- ~*- ~ - ~r~at~r Than ::::::~: :::::::::::::::::::::::::::::::::::::::::::::::::: ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: ....................................... ...,..l...... ...................................................................................... Effects of Exposure Acute: Eyes: Causes slight-moderate, eye irritation. Skin:.. Hoderately irrltatin$; causes redness, edema, or drying of the skin. Respiratory Syste~ Hay cause dizziness, irritation of eyes, nose and throat, vomit- ing, bluish color of the skin, and CNS effects. See A.C., Chronic: Recent studies with laboratory animals have shown that gasoline vapors caused kidney damage and kidney cancer in rats and liver cancer in mice. Other; - Sensitization Properties: Skin: Yes .... No ~ Unknown Respiratory:. Yes No ~.L Unknown Median Lethal Dose (LDs0 LC so )(Species) Oral LDSO" 18.75 ml/kA (rat~ Inhalation N. D. Dermal >5 mt/kR (rabbit) Other N.D. Irritation Index, Estimation of Irritation (Species) Skin 0.98/8,0 (rabb i t~) Eyes 0/110 (rabbit) Symptoms of Exposure See above. .". ................ ~ ............ Ignition TemD.°F. 850 F Flash Point OF. (Method) -40F (COC) Flammable Limits (%) Lower 1. l~ UDDer 7.6~ Products Evolved When Subjected to Heat or Combustion: Carbon monoxide and carbon dioxide may be l~ormed on burning in limited air supply. Recommended Fire Extinguishing Agents And SPecial Procedures: According to the National Fire Protection Association Guide 325N, use dry chemical, foam or carbon dioxide. Water may be ineffec- tive on the flames, but water should be used to keep f/re-exposed containers cool. If a leak or spill has not ignited, use water spray to disperse the vapors and to provide protection for the persons attempt/ns to stop the leak. Unusual or Explosive Hazards: Flow/ns gasoline can be ignited by self-generated static electri- city; use adequate grounding. N.D. - Not Determined N.A. - Not Apohcable < - Less Than > - Greater Than ?""¥";"'"'"' .... · ' · ' ; .~ !' ~!;: .... " ' -'.'..~¥:~-::::?.~:.'":~.'.':i::~::~::!~!,~:~:'-.' :;;: ?,~'¢~:.::i:':.c::;¥!:';.":::;'::~:::~:~:;~:::,";::~¥;;~::::.!~':~".: ;:'-::.'.:::;::: :::;~:: :;:.~lJB::!;i:::.";i:.:;:,::i:;>.>~;:i:.:':~ !: Waste Disposal Method: Re-evaluation DE the product may be required by the user at the time DE disposal, since' the product uses, transEormatlons, mixtures and processes may change classiEicatlon to non-ha~-ardous or hazardous Eor reasons other than, or in addition to ignltabillt¥. (See Remarks ~or ~aste Classilicatlon.) . Procedures in Case of Breakage or Leakage: (Transportation Spills Call CHEMTREC (800) 424-9300) Eliminate all ~gnition sources including internal combustion eng- ines and po~er tools. Ventilate area. Avoid breathing vapor. Else SCBA or supplied-air mask Eor large spills in conEined areas. Contain spill ii possible. Remove ~ith inert absorbent. Remarks: Haste ClassiEication: Product (as presently constituted) has the RCRA characteristic DE ignitabillty and ii discarded in its purchased [orm ~ould have the hazardous ~aste number D001. 0ANGE~ EXTREMELY FLAMMABLE HARMF~ 0R FATAL IF SWALLOWEO MAY BE HARMFUL IF INHALE0; ~Y CAUSE IRRITATION MAY BE HARMFUL IF ABSORBE0 THROUGH SKIN Long t~rm ~x~osur~ to va;ors ha; caused c~csr in Ia~oratory animals. Kee; ~w;y from h~;t, sparks ~.~ II,me. Avoid brlathing v;por. Usl only in well-v~ntilatl~ locations. Avoid control with lyes lnd ~rolonged comact with Kee; container closed. Wash l~orou~hly alter FOR USE AS MOTOR FUEL 0~Y Requirements for TransDor~at~on. Handling and Storage: Transport, handle and store in accordance u~[h OSHA ResutaL~on and appt[cabte D.O.T. re~uta[[ons. DOT Proper Shipping N~me: Gasoline DOT Hazard Class {if applicable): Fta~eabte liquid, I.IN 1Z03 Boiling Point ~F) >90 Vapor Pressure >-3~0 (mmHg) Specific Gravity 0.7-.78 (H20=I) Vapor Density 3-~.0 . . (Air=l} Appearsnce ~nd Odor , LiAh~ stra~ Lo liAh~ red liquid pN of undiluted product N.A. Solubility ~liiht Percent Volatile by Volume 100 Ev~oration N.D. ( )= 1 Viscosily <l.~ cst ~ IOOF Olher - Hazardous Polymerizations Occur X Do not occur The Material Reacts Violently With: (If others is checked below, see additional comments on page 6 for futher details] Air Water Heat Strong Oxidizers Others None of These x x N.D. - Nol Determined N.A. - Not A~hcabte Chemical/Common Name CAS No. Exposure Limit Ranse in ~ · Gasoline consists mainly o~ strai&ht chain HIXTURE 300 ppm TWA ACGIH 100.00 and branched paraEE[nlc hydrocarbons, ole- E{ns, cycIoparaEEins and aromatics. The ben- 100 ppm TNA Texaco zene content normally varies [rom 0.2-3.5% with a typical value o~ 1./4~. · Hazardous according to OSHA (1910.1200) or one or more stake Right-To-Know lists. 1. Title III Section 302/304 Extremely Hazardous Substance Component CAS No. % RQ (Lbs) TPO (Lbs) NONE I It. CERCLA Section 102(a) Hazardous Substance Component CAS No, % RQ (Lbs) NONE I III. Title III Section 311 Hazard Categorization Acute Chronic Fire Pressure Reactive Not Applicable X IV. Title III Section 313 Toxic }~hemicals X I CAS No. % Component Benzene 71/432 1-3.99 To I uene 108883 /4-10.99 E thy l benzene 100/41/4 1-3.99 Xy I ene 1330207 4-I0.99 P s eudocumene 95636 1- 3.99 tiethyl reft-butyl ether 163/40/4/4 O-lO(volT.) 00351 UNLEADED REGULAR GASOLINE DANGER! EXTREHELY FLAHHABLE HARHFUL OR FATAL IF SNALLONED HAY BE HARHFUL IF INHALED~ HAY CAUSE IRRITATION HAY BE HARMFUL IF ABSORBED THROUGH SKIN Lon~ term exposure to vapors has caused cancer ~n laboratory animals. Keep away ~rom heat, sparks and ~lame. Avoid breath~n~ vapor. Use only ~n well-ventilated locations. Avoid con,act w~th eyes and prolonsed contac~ ~th skin. Keep container closed. Nosh thoroughly after handling. FOR USE AS HOTOR FUEL ONLY I~ s~allowed, do no~ ~nduce vom{~ng. Call a physician ~mmed~ely. In case of con~ac~, ~mmed{a~ely ~lush eyes ~{~h plenty of ~a~er Ear a~ leas~ 15 m~nu~es. N~sh skin ~h soap and plenty of ~a~er. Gasoline-soaked clo~h~ng should be removed and laundered before reuse. In case of ~{re use ~a~er spray, ~oam, dry chemical or C02. Chemical/Common N~me CAS No. Range ~n ~ ~Gasol~ne cons{s~s mainly oe s~ra~gh~ chain HIXTURE 100.00 and branched paraff~n~c hydrocarbons, ole- ~ns, cyclopara~[ns and aromatics. The ben- zene con~en~ normally varies ~rom 0.2-3.5~ ~h a ~yp~cal value of 1.6~. · Hazardous according ~o OSHA C1~10.1200) or one or more s~a~e R~gh~-To-Kno~ l~s~s. HHIS Health : 2 Reac~v~y : 0 Flammab~'l~y: ~ Special : - DOT Proper Sh~pp~ng Name: Gasoline DOT Hazardous Class : Flammable l{qu~d, UN 1203 CAUTION: Misuse of empty containers can be hazardous. Empty containers can be hazardous if used to store toxic, flammable, or reactive materials. Cutting or welding of empty containers might cause fire, explosion or toxic fumes from residues. Do not pressurize or expose to open flame or heat. Keep container closed and drum bungs ~n place. HEALTH EMERGENCY TELEPHONE: (914) 831-3400 {EXT. 204l For Additional InformatiOn concerntn~ Texaco Inc. Fuels/Lubricants/Antifreezes call {914) 831-3400 (EXT. 204! 2000 Westchester Avenue Chemicals White Plains, New York 10650 call (512)459-6543 Transportation Spills call CHEMTREC (800J 424-9300 TEXACO INTEI~DS TO COMPLY FULLY WITH PROVISIONS OF THE TOXIC SUBSTANCES CC]~T'ROL ACT - STATE OF MICHIGAN CRITICAL MATERIALS ACT (REVISED 1987) 1.4Z benzene: converslon factor 6.7 pounds per gallon Other e[[ects ut inhalatlon include central nervous system e[[ects such as contracted pupils, loss ut re[lexes, convulsions, seizures, sudden loss ut consciousness, coma and sudden death. Other indications ut overexposure are headaches, [lushlng ut the face, nausea, mental conEusion and depression, loss DE appetite, blurred speech and di[[iculty in swallowing. This product is iht. ended [or motor [uel only. To determine applicability or effect of any law' or regulation with resl~eCt to the product, users should consult his legal advisor or the ao!oropr~ate government agency. Texaco does not undertake to furmsh advice on such matters. ev R. T. Richards Title H. gr, Env. Conservation & Toxicology Date 04-09-87 {-] New [XI Rev,sed. Supersedes 04-t8~86 N.D. - Not Oetermfned N.A. - Not Appifcable < - Le~s Than > - Greater Than 6 THE INFORMATION CONTAINED H IS BELIEVED TO BE ACCURATE. IT IS IVIDEO INDEPENDENTLY OF ANY SALE OF THE PROOUCT AS PART OF TEXACO'S PROOUCT SAFETY PROGRAM. IT IS NOT INTENDED TO CONSTITUTE PERFORMANCE INFORMATION CONCERNING THE PRODUCT. NO EXPRESS WARRANTY, OR IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE IS MADE - WITH RESPECT TO THE PRODUCT OR THE INFORMATION CONTAINED HEREIN. DATA SHEETS ARE AVAILABLE FOR ALL TEXACO PRODUCTS. YOU ARE URGED TO OBTAIN DATA SHEETS FOR ALL TEXACO PRODUCTS YOU BUY, PROCESS, USE OR DISTRIBUTE AND YOU ARE ENCOURAGED AND REQUESTED TO ADVISE THOSE WHO MAY COME IN CONTACT WITH SUCH PRODUCTS OF THE INFORMATION CONTAINED HEREIN. EXPLANATION OF THE INDUSTRIAL HYGIENE, TOXICOLOGY, AND MATERIAL SAFETY DATA SHEET PROOUCT INFORMATION Permissible Concentrations Trade Name and Synonyms Indicates worker exposure limits, such as the Threshold Limit Value (TLV) as established by the American Refer to the code number and name under Conference of Governmental Industrial Hygienists or which the product is marketed and the common standards, promulgated by the Occupational 'Safety and commercial name of the producL Health Administration (e.g.. PEL). Manufacturer's Name and Address Self explana- TI.V-Time Weighted Average (TVVA) is the concentration tory. in air averaged over an 8 hour daily exposure. Chemical Name and/or Family or Description TLV-Ceil,ng (C) is the ceiling limit on concentration that should not be exceeded during any part of the Refer to chemical, generic, or descriptive name working day. of single elements and compounds. "Skin" Notation (ACGIH) indicates that dermal For purposes of this form. a product is defined absorption can contribute to overall exposure roi- as hazardous if it possesses one or more of the lowing direct contact or exposure to mrborne material. following characteristics: (1) has a flash-point below 200 degrees FahrenheiL closed cup or sub- Permissible Exposure Level' (PEL) is the time weighted ject to spontaneous heating; (2) has a threshold concentration in air averaged over an 8 hour daily limit value as established by the American Conference exposure. of Governmental Industrial Hygenists and/or the Occupational Safety and Health Administration EMERGENCY AND FIRST AID PROCEDURES (with exception to petroleum oil mist). (3) a single dose oral LDSO below 500 rog/kg: (4) causes Administer first aid and emergency procedures burns to the skin in the short-term exposure or in case of eve and/or skin contact, ingestion is systemically toxic by skin contact; (5) has and inhalation. been demonstrated to be a skin or eye irritant or causes respiratory irritation: (§) may cause skin PHYSIOLOGICAL EFFECTS or respiratory sensitization; (7) has teratogenic. mutagenic or other toxic effects: (8) may cause Acute Exposures (Eye, Skin, Respiratory System) asphyxia or pneumoconiosis; (9) in the course of normal operations may produce dusts, gases. Refers to the most common effects thal would fumes, vapor, mist, or smoke which have one be expected to occur from direct contact w~th or more of the above characteristics: (10) con-' the product. re,ns a component which may be carcinogenic according to NTP (National Toxicology Program). Chronic IARC (International Agency for Research on Cancer). OSHA (Occupational Safety and Health Administration). Refers to the effects that are most likely to pc- EPA (Environmental Protection Agency) and/or NCI cur from repeated or prolonged exposure. (Nahonal Cancer Inshtute.); (111 has a median LCS0 (RATS) in air of 200 ppm or less by volume of gas or Sensitizer vapor or :2.0 mg/I or less of mist. fume or dust when administered by continuous inhalation for one hour: Means a substance which will cause on or in (12.) is a hazard as identified in the Product normal living tissue, through an allerg;c or Shipping Label on papa 5. photodynam~c process, a hypersensitivity which - becomes evident on reapDlicat~on of. or expos- ure to. the same substance. OCCUPATIONAL CONTROL PROCEDURES Median Lethal Dose or Concentration (LDS0.LCS0) (Consult your Industrial Hygienist or Oc~:upational Health SDecialisL) Refers to that dose or concentration of the ma- terial which will produce death in 50 per cent of Protective Equl!Dment the animals. For inhalation, exposure brae is in- dicated. Type of protective ecluiment that is necessary for the safe handling and use of this product. Irritation Index Ventilation Refers to an empirical score (Dralze Method) for eye and skin irrttation when tested by Ihe math- Normal means ade~luate to maintain permissible od described. If numbers are not available, an concentrations, estimated score indicates whether or not Ventilation: type. i.e. local exhaust, mechanical, mater~al is an irritant. etc. FIRE PROTECTION INFORMATION Vapor Pressure Pressure exerted when a solid or li(:luid is in Ignition Temperature equilibrium with its own vapor. Refers to the temperature in degrees Fahrenheit, at which a liquid will give off enough flammable Specific Gravity vapor to ignite and burn continuously for 5 sec- The ratio of the density 'of _ the product to the onds. density of water;' Flash Point (Method used) _. Vapor Density Refers to the temperature in degrees Fahrenheit. at which a liCluid will give off enough flammable The ratio of the density of the vapor a! satura- tion concentration ( 20 degrees Celsius or 68 val3or to ignite, degrees Fahrenheit ) to the density of air at 760 Flammable Limits mmHg. Refers to the range of gas or vapor concentration Appearance and Odor (percent by volume in air) which will burn or ex- plode if an ignition source is present. Lower Refers to the general characterization of the mat- means the lower flammable limit and upper erial, e.g. powder, colorless liquid, aromatic odor, means the upper flammable limit given in per- etc. cent. I:)H Products Evolved When Subjected to Heat or Combustion. Refers to the degree of acidity or basicity of. the material in a sDecific concentration. The products evolved when this material is sub- jected to heat or combustion. Includes temper- pill-5 - STRONGLY ACIDIC ature at which oxidation or other forms of degra- pHS-7 - WEAKLY ACIDIC dation occurs, pH7-9 - WEAKLY BASIC prig- 14 - STRONGLY BASIC Recommended Fire Extinguishing Agents and Special Procedures Solubility Specifies the fire fighting agents that should be Refers to the solubility of a material by weight used to extinguish fires. If unusual fire hazards in water at room temperature. The term negli- are involved or special procedures ;ndicated. this gible, less than 0.1%; slight. 0.! to I%: moder- iS specified, ate. 1 to 10%; appreciable, 10% or greater. Gives solubility in organic solvents where a;3proPr~ate. Unsusual Fire or Explosive Hazards Percent Volatile By Volume Specifies hazards to personnel in case of fire, ex- plosive danger. Refers to the amount volatilized at 20 degrees Celsius or 68 degrees Fahrenheit when allowed to ENVIRONMENTAL PROTECTION evaporate. Specifies how this product may be disposed. Evaporation Indicates precautions necessary in the event that Gives the rate of evaporation compared to a leakage or breakage occurs. Included are (a) standard clean-up procedures, (b) personal protective ecluioment if necessary. (c) hazards that may be V scosity created, i.e. fire. exDIosion, etc. Measure of flow characteristics in Kinematic vis- PRECAUTIONS cosily in Centistokes. Hazardous Polymerization Label that is required or recommended, Hazardous polymerization is that reaction which Requirements for Transportation, Handling and takes place at a rate which produces large Storage amounts of energy. Indicates whether ,t may or Specifies handling and storage procedures. Gives may not occur and under wl~at storage conditions. ICC. DOT. or other regulations related to safety Does the Material React Violently and health for transportation. Indicates whether the material will react violently, CHEMICAL AND PHYSICAL PROPERTIES releasing large amounts of energy when exposed under conditions listed. Boiling Point (or Range) Composition In degrees Fahrenheit or Celsius Boiling Point at 760 mmHg. Components of the product as required by OSHA (t910. 1200) and one or more state Right to Know laws. Texaco Inc. 2000 Westchester Avenue White Plains, New York 10650 TEX 6,CO INC. '- INDUS'i.:AFETy'GIENE' TOXICOLOGY,DATA SHEET AND ~. ~L ~T~,~ NOTE: NO REPRESENTATION IS MADE AS TO THE ACCURACY OF THE INFORMATION HEREIN. SEE PAGE 7 FOR CONDITIONS UNDER WHICH DATA ARE FURNISHED. Trade Name and Synonyms 00352 LEADED REGULAR GASOLINE Manufacturer's Name Emergency Telephone No. Texaco Inc. (914) 831-3400 ext. 204 Address P.O. Box 509 Beacon, NY 12508 Chemical Name and/or Family or DescriDtion Aut:omotive Leaded Gasoline THIS PRODUCT IS CLASSIFIED AS: NOT HAZARDOUS: HAZARDOUS BY DEFINITION NO.{S} 1,2,5,10 ON ATTACHED EXPLANATION SHEETS WARNING STATEMENT: DANGERI EXTREMELY FLANNABLE HARMFUL OR'FATAL IF St4ALLOt4ED MAY BE HARMFUL IF INHALED; MAY CAUSE IRRITATION MAY BE HARMFUL' IF ABSORBED THROUGH SKIN ::~: : ::::~: .::::::>.':::: ::::: ::::::::::::::::::::::::::::::::::::: ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: .~:~i~i i~':..'~'::,~ ~i~:~:i.:.:M:~i:~:i:~:.?:::~:::~:!:?~;?~::i~:~.:..:.:.::::.:~!:!~:~:~:~:~!~::~::::::~::::::~::~:~:ii~:!~ ::: ....: .: ..:. · . .. :: ,::::-. · : . ??::: ., , : , ========================================================================================================= ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: : .OCCU P...',~eNA~?:!:!C~~: :~...~...~P~ ............... ~:::::¥..: ..................... .,. ............ .:.. .......... ~: :::::::::::::::::::::::::::::::::::::::::: :::i: ~:?:i:~:i::;i~i:: :.:!:.::: ;:::::¥ :: ::: ............. ~.~:~:::::::.~ ...................... ~ ::::::::::::::::::::::::::::::::::::::: .::~:.:::::::.::~o: .............. ::::,..~.......::.::.::. ~:.:..-.:...~L .~..:....: .................. :.: ............... :........:.:.:....... ............. < ................. :< ...................................... i~,,,,,< ........... ,.,,,.,,,,.. Protective ECluipment (TyDe) Eyes: Chemical type goggles or Eace shield optional. Skin: 'Protective ctothln& such as uniforms, coveralls or lab coats resLs should be worn. Launder or dry cteafl when so~ted. Gloves ' - ~anL to chemicals and petroleum d[stlttates required. Inhalation: SCBA or supplied air respiratory protection required for entry into tanks,vessels, or ol:her conE[ned spaces containing gasoline. Ventilation: Adequate 1:o meet permissible concentral:ions. Permissible Concentrations: Air: TWA t~or gasotine is 300 ppm (ACGIH 1985-86). Texaco recommends a Tt4A DE 100 ppm. ::. :::: :;:..; ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: First Aid Eyes: Flush with water Eot fifteen minutes. Skin: Nash exposed areas with soap and water. Ingestion: Do NOT {nduce vomiting. May cause chemical pneumonltis. Cart a physician. Inhalation: Should symptoms noted under physiological effects occur, remove to Eresh air. IE not breathing, apply artificial respiration. Other Instructions: Remove gasoline-soaked clothing. N.D, - Not Determined N.A. - Not ADolicable Effects of Exposure Acute: Eyes: Causes slight-moderate eye irritation. Skin: Hoderately irritating; causes redness, edema, or drying oF the skin. Respiratory System Hay cause dizziness, irritation oF eyes, nose and throat, vomit- ing, bluish color oE Lhe skin, and CNS e~[ects. See A.C., p.6. Chronic: Recent studies with laboratory animals have shown that gasoline vapors caused kidney damage and kidney cancer in rats and liver cancer in mice. '. Other: - Sensitization Properties: Skim Yes No ~ Unknown ResD~ratory: Yes No X Unknown Median Lethal Dose (LD so LC so )(Species) Oral Similar product, LDS0 = 18.75 mt/kg (rat).practically nontoxic Inhalation N · D. Dermal Similar product, >5 mt/kg (rabbit),practicatty nontoxic Other No D. Irrffation Index. Estimation of Irritatior~ (Species) Skin Similar product,0.98/8.0 (rabbit) ,slightly irritating Eves Similar product, 0/110 (rabbit},minimatty irritating l. Symptoms of Exposure See Additional Comments. :: ...... . ..::.... .......... , ...... ,.....,::::: ...:.. .::..: · . :::::::::::::::::::: ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: Ignition Tamp. OF. 850 F Flash Point OF. (Method) -40F (COC) Flammable Limits (%) Lower 1.41{ Upper 7. Products Evolved When Subjected to Heat or Combustiom Carbon monoxide and carbon dioxide may be t."ormed on burning in Limited air supply. Recommended Fire Extinguishing Agents And SpecialProcedures: According to the National Fire Protection Association Guide 325~, use dry chemical, foam or carbon dioxide. Hater may be ineffec- tive on the flames, but water should be used to keep ~ire-exposed containers coot. If a leak or spilt has not ignited, use ~ater spray to disperse the vapors and to provide protection Eot the persons attempting to stop the teak. Unusual or Explosive Hazards: Flowing gasoline can be ignited by serE-generated static electri- city.; use adequate grounding. N.D. - Not Determined N.A. - Not Applicable < - Less Than > - Greater Than 2 Waste Disposal Metho~ Re-evaluation o~ the product may be required by the user at the time DE disposal, since the product uses, transEormations, mixtures and processes may change classlEicatlon to non-hazardous or hazardous £or reasons other than, or in addition to ignltabillty. (See Remarks ~or Haste Classlflcatlon.) Proceduresin Case of Bre~age orLe~kage:(T~nsportation Spills CalICHEMTREC(800)424-9300) Eliminate alt ~gniclon sources includin& internal combustion eng- tries and power tools. Ventilate area. Avoid breathln& vapor. Use SCBA or supplied-air mask Eot large spills in conEined areas. Contain spill iE possible. Remove with inert absorbent. Remarks: l;aste Classification: Product (as presently constituted) has the RCRA characteristic o~ ignltabillty and iE discarded in its purchased form would have the hazardous waste number DO01. DANGER! EXTREMELY FLAMMABLE HARMFUL OR FATAL IF SWALLOWED MAY BE HARMFUL IF INHALED; MAY CAUSE IRRITATION MAY BE HARMFUL IF ABSORBED THROUGH SKIN Long term exposure to vapors has caused cancer in laborotorv animalS. Keep away from heat, sparks and flame. Avoid breathing vapor. Use only in well-ventilated locations. Avoid contact with eyes and prolonged contact with skin. Keep container closed. Wash thoroughly after handling. FOR USE AS MOTOR FUEL ONLY:CONTAINS LEAD-ANTIKNOCK COMPOUNOS Reclu:rements for Transportation, Handling and Storage: Transport, handle and store in accordance with OSHA Regulation 1910.106, and applicable D.O.?. re&ulations. DOT Proper Shipping Name: Gasol ine DOT Hazard Class (if applicable): Flammable l~qu~d, UN 19-03 [::i:~:?~:~:~:~:.~::::i~.:.:i::?:i::~::i::~::::~::~:~:i~..;~.!?i~::::~.~::::~i:::i:::i:i:i:~i~i.~?~!:i:i:!:i:i:?.~i?i:i:~:;:::.:~:.::~::~::::~:~:::::!:i$i:i:?:i:::::~:::.:~:?:::~::~:i:i:i:~:~:i:?:::?:i::.:?:s::i~.~i?i~:~i:~.`..:i:i:~:?:~:~:?:~:::::::::::::::::::::::::::::::::~`.:.~:~.!:::::::::¥f:~:i:!.`..:i:~:~:i:.::i::..:::.<:~g::~:~:~:~::~:~.`...~..:::::?:~:!:~:~i:?~.~..i.`~:i:~.~..:?:~:~:~::.:?.?.~:i:~ig~:~:.~:..`..``!:!:i:?:~:~:!:~..x.::..:~:...:~.~::.``~.~:.`.:::.~:.`.::~`.::``::.`.~?.::~ Boiling Point (OF) GTgO Vapor Pressure GT-350 (mmHg) Specific Gravity 0.7-.78 (H20=1) Vapor Density 3-6.0 (Air=l) Appearance and Odor Light straw to light red liquid pH of undiluted product N,A, Solubility .S l ight Percent Volatile by Volume 100 Evaporation lq, D, { )= 1 viscosity L,T, I,/4 cst @ 100F Other - Hazardous Polymerizations Occur }[ Do not occur The Material Reacts Violently With: (If others is checked below, see additional comments on page 6 for futher detaih Air Water Heat Strong Oxidizers Others None of These X X N.D. - Not Determined N.A. - Not AOOhcable Chemical/Common Name CAS No, ~xBosure Limit Range in % Gasoline consists mainly oE straight chain 100 ppm TI4A - Texaco 100.00 and branched paraEt~inic hydrocarbons, ole- ~ins, cycloparaEt~ins and aromatics. The ben- zene content normally varies t~rom 0.2-5.07. with a typical value oE I./42. The lead con- tent may vary in compliance w[th EPA and state regulations. ~tlazardous according to OSHA (I910.1200) or one or more state Right-To-Know lists. I. Title III Section 3021304 Extremely Hazardous Substance Coml~onent CAS No. % Rtl (Lbs) TPCI (Lbs) Te t r ae thyt t cad 78002 <0.01 10 100 II.'CERCLA Section 102(a) Hazardous Substance Component ~AS No. % RQ (Lbs) Tetrae thyt Iead 78002 <0.0! 10 1 I III. Title III Section 311 Hazard Categorization Acute Chronic Fire Pressure Reactive Not ApDlicable IV. Titlex III Section 313 Toxic :~hemicals X I Component CAS No. Benzene 71432 1-3.99 ' To I uene 108883 fi- 10.99 I Ethylbenzene 100416 1-3.99 Xyl erie 1330207 4-10.99 P s eudocumene 95636 1-3.99 I Hethy! tert-butyt ether 1634044 0-10(volT.) 00352 LEADED REGUL~J~ GASOLINE DANGER! EXTREHELY FLAHJ~BLE HARHFUL OR FATAL IF SNALLONED I~Y BE HARHFUL IF INHALED; HAY CAUSE IRRITATION HAY BE HARHFUL 'IF ABSORBED THROUGH SKIN Long term exposure to vapors has caused cancer in laboratory animals. Keep away [rom heal, sparks and flame. . Avoid breathing vapor.Use only in well-ventilated locations. Avoid contact with eyes and prolonged contact with skin. Keep container closed. Nash thoroughly after handling. FOR USE AS HOTOR FUEL ONLY;CONTAINS LEAD-ANTIKNOCK COHPOUNDS If swallowed, DO NOT induce vomiting. Call a physician immediately. In case o[ contact, immediately [lush eyes with plenty o[ waker [or at least 15 minutes. Wash skin with soap and plenty o~ water. Gasoline-soaked clothing should be removed and laundered be[ore reuse. In case of [ire use water spray, loam, dry chemical or C02. hemlcal/Common Name CAS No. Range in Z .aasoline consists mainly o~ straight chain 100.00 and branched para[~inlc hydrocarbons, cie- fins, cyclopara[flns and aromatics. The ben- zene content normally varies [rom 0.2-5.0~ with a typical value o[ 1.4Z. The lead con- tent may vary in compliance with EPA and state regulations. lazardous according Lo OSHA (1910.1200) or one or more slate Right-To-Know lists. E' H~IS Health : 2 Reactivity Flammability: 4 Special )OT Proper Shlppln8 Name: Gasoline 30T Hazardous Class : Flammable liquid, UN 1203 r*~UTION: Misuse of empty containers can be hazardous. Empty containers can be hazardous if used to store toxic, flammable, or reactive materials. Cutting or welding of empty containers might cause fire, explosion or toxic fumes from residues. Do not pressurize or expose to open flame or heat. Keep container closed and drum bungs in Dlace. HEALTH EMERGENCY TELEPHONE: 1914) 831-3400 (EXT. 204) · :* '.' ' For Additional InformatiOn Coneernin~ Texac° Inc. ": ' Fuels/Lubricants/Antifreezes call ~914) 831-3400 (EXT.204! 2000 WestcheSter Avenue Chemicals White Plains, New York 10650 ca, (512)459-6543' Transportation Spills · ':' call CHEMTREC {800) 424-9300 TEXACO INTENDS TO COMPLY FULLY WITH PROVISIONS OF THE TOXIC SUBSTANCES CONTROL ACT STATE OF MICHIGAN CRITICAL MATERIALS ACT (REVISED 1987) .~Z benzene, 0.1Z lead Other effects of inhalation include central nervous system *.effects such as contracted pupils, loss of reflexes, convulsions, seizures, sudden loss of consciousness, coma and sudden death. Other indications of overexposure are headaches, flushing of the face, nausea, mental confusion and depression, loss of appetite, blurred speech and difficulty in swallowing. This product ks intended for motor fuel only. May contain oxygen- ales such as tertiary butyl alcohol and methyl tertiary butyl ether. To determine applicability or effect of any law or regulation with respect to the product, users should consult his legal advisor or the appropriate government agency. Texaco does not undertake to furnish advice on SUCh matters. Bv R. T. Richards Title HEr. Env. Conservation & Toxicology Date 04-09-87 ~ New ~ Revised. Supersedes 05-27-86 N.D. - Not Determined N.A. - Nol Applicable < - Less Than > - Greater Than 6 THE INFORMATION CONTAINED HEREIN IS BELIEVED TO BE ACCURATE. IT IS PROVIDED INDEPENDENTLY OF ANY SALE OF THE PRODUCT AS PART OF TEXACO'S PRODUCT SAFETY PROGRAM. I¥ IS NOT INTENDED TO CONSTITUTE PERFORMANCE INFORMATION CONCERNING THE PRODUCT. NO EXPRESS WARRANTY, OR IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE IS MADE WITH RESPECT TO THE PRODUCT OR THE INFORMATION CONTAINED HEREIN. DATA SHEETS ARE AVAILABLE FOR ALL TEXACO PRODUCTS. YOU ARE URGED TO OBTAIN DATA SHEETS FOR ALL TEXACO PRODUCTS YOU BUY, PROCESS. USE OR DISTRIBUTE AND YOU ARE ENCOURAGED AND REQUESTED TO ADVISE THOSE WHO MAY COME IN CONTACT WITH SUCH PRODUCTS OF THE INFORMATION CONTAINED HEREIN. EXPLANATION OF THE INDUSTRIAL HYGIENE, TOXICOLOGY, AND MATERIAl SAFETY DATA SHEET PRODUCT INFORMATION Permissible Concentrations Trade Name and Synonyms Indicates worker exposure limits, such as the Threshold. Limit Value (TLV) as established by the American Refer to the code number and name under Conference of Governmental Industrial Hygienists or which the product is marketed and the common standards, promulgated by the Occupational Safety and commercial name of the product. Health Administration (e.g., PEL). Manufacturer's Name and Address Self explana- TLV-Time Weighted Average (TWA) is the concentration tory. in air averaged over an 8 hour daily exposure. Chemical Name and/or Family or Description TLV-Ceiling (C) is the ceiling limit on concentration that should not be exceeded during any part of the Refer to chemical, generic, or descriptive name working day. of single elements and compounds. "Skin"Notation (ACGIH) indicates that dermal For purposes of this form. a product is defined absorption car~ contribute to overall exposure roi- as hazardous if it possesses one or more of the lowing direct contact or exposure to airborne material. following characteristics: (1) has s flash-point below 200 degrees Fahrenheit. closed cup or sub- Permissible Exposure Level (PEL) is the time weighted ject to spontaneous heating; (2) has a threshold concentration in air averaged over an 8 hour daily limit value as established by the American Conference exposure. of Governmental Industrial Hygenists and/or the Occupational Safety and Health Administration EMERGENCY AND FIRST AID PROCEDURES (with exception to petroleum oil mist). (3) a single dose oral LD§0 below 500 mglkg; (4) causes Admimster first aid and emergency procedures burns to the skin in the short-term exposure or in case of eye and/or skin contact, ingestion is systemically toxic by skin contact; (5) has and inhalation. been demonstrated to be a skin or eve irritant or causes respiratory irrftation: (6) may cause skin PHYSIOLOGICAL EFFECTS or respiratory sensitization; (7) has teratogenic. mutagenic or other toxic effects: (8) may cause Acute Exposures (Eye, Skin, Respiratory System) asphyxia or pneumoconiosis; (9) in the course of normal operations may produce dusts, gases. Refers to the most common effects that would fumes, vapor, mist. or smoke which have one be expected t~. occur from direct contact v~ith or more of the above characteristics: (10) con- the product. tains a component which may be carcinogenic according to NTP (National Toxicology Program), Chronic IARC (International Agency for Research on Cancer). OSHA (Occupational Safety and Health Administration). Refers to the effects that are most likely to pc- EPA (Envir. onmental Protection Agency) and/or NCI cur from repeated or prolonged exposure. (National Cancer Institute.); (11) has a median LOS0 (RATS) in air of 200 ppm or less by volume of gas or Sensitizer vapor or 2.0 mg/I or less of mist, fume or dust when administered by continuous inhalation for one hour; Means a substance which will cause on or in (12) is a hazard as identified in the Product normal living tissue, through an allergic or photodynamic process, a hypersensitivity which Shipping Label on page 5. becomes evident on reapplication of, or expos- ure to. the same substance. OCCUPATIONAL CONTROL PROCEDURES Median Lethal Dose or Concentration (LDS0.LCS0) (Consult your Industrial Hygienist or Occupational Health Specialist.) Refers to that dose or concentration of the ma- terial which will produce death in 50 per cent of Protective Equipment the animals. For inhalation, exposure time is in- dicated. Type of protective eQuiment that is necessary . for the safe handling and use of this producL Irritation Index Ventilation Refers to an empirical score (Draize Method) for eye and sk,n irritation when tested by the math- Normal means adequate to maintain permissible od described. If numbers are not available, an concentrations, estimated score indicates whether or not the Ventilation:. type. i.e. local exhaust, mechanical, material is an irritanL etc. FIRE PROTECTION INFORMATION Vapor Pressure Pressure exerted when a solid or liquid is in Ignition Teml~erature equilibrium with its own vapor. Refers to the temperature in degrees Fahrenheit, at which a liquid will give off enough flammable Specific Gravity vapor to ignite and burn continuously for 5 sec- · onds. The ratio of the. density of .the product to the density of water. Flash Point (Method used) -. Vapor Density Refers to the leml~eratu~e in degrees Fahrenheit, at which a liquid will give off enough flammable The ratio of the density of the vapor at satura- tion concentration ( 20 degrees Celsius or 68 vapor to ignite, degrees Fahrenheit ) to the density of air at 760 Flammable Limits mmHg. Refers to the range of gas or vapor concentration Appearance and Odor (percent by volume in air) which will burn or ex- plode if an ignition source is presenL Lower. Refers to the general characterization of the mat- means the lower flammable limit and upper erial, e.g. powder, colorless liquid, aromatic odor, means the upper flammable limit given in per- etc. cenL pH Products Evolved When Subjected to Heat or Combustion. Refers to the degree of acidity or basicity of the material in a specific concentration. The products evolved when this material is sub- jected to heat or combustion. Includes teml~er- pill-5 - STRONGLY ACIDIC ature at which oxidation or other forms of degra- pHS-7 - WEAKLY ACIDIC dation occurs, pHT-9 - WEAKLY BASIC prig- 14 - STRONGLY BASIC Recommended Fire Extinguishing Agents and $1~ecial Procedures Solubility SPecifies the fire fighting agents that should be Refers to the solubility of a material by weight used to extinguish fires. If unusual fire hazards in water at room temperature. The term negli- are involved or special procedures indicated, this gible, less than 0.1%; slight, 0.1 to 1%; moder- is specified, ate. I to 10%: aDl~reciable. 10% or greater. Gives solubility in organic solvents where appropriate. Unsusual Fire or Explosive Hazards Percent Volatile By Volume Specifies hazards to personnel in case of fire, ex- I~losive danger. Refers to the amount volatilized at 20 degrees Celsius or 68 degrees Fahrenheit when allowed to ENVIRONMENTAL PROTECTION evaporate. Sl3ecifies how this product may be disposed. Evaporation Indicates I~recautions necessary in the event that Gives the rate Of evaporation compared to a leakage or breakage occurs. Included are (a) standard clean-up procedures. (bi personal protec'tive equi!~ment if necessary. (c) hazards that may be V;scosity created, i.e. fire, explosion, etc. Measure of flow characteristics in Kinematic vis- PRECAUTIONS cosily in Centistokes. Hazardous Polymerization Label that is required or recommended. Hazardous polymerization is 'that reaction which Requirements for Transportation, Handling and takes place at a rate which produces large Storage amounts of energy. Indicates whether it may or Specifies handling and storage procedures. Gives may not occur and under what storage conditions. ICC, DOT, or other regulations related to safety Does the Material React Violently and health for transportation. Indicates whether the material will react violently. CHEMICAL AND PHYSICAL PROPERTIES releasing large amounts of energy when exposed Boiling Point (or Range) under conditions listed. Composition In degrees Fahrenheit or Celsius Boiling Point at 760 mmHg. Components of the I~roduct as required by OSHA (1910.1200) and one or more state Right to Know laws. Texaco Inc. 2000 Westchester Avenue White Plains, New York 10650 / -EL · ADVANCED ENVIRONMENTAL CONCEPTS lNG' / March ~1, '1996 Mr. Dan Starkey Kern County Environmental Health Services Department 2700 "M" Street, Suite 300 Bakersfield, California 93301 Regarding: Site Closure Work Plan Chico and the Man Service Station 231 East ~ 8th Street Bakersfield, California Dear Mr. Starkey: Advanced Environmental Concepts, Inc. [AEC] has prepared the Site Closure Work Plan far the above referenced project/location. Enclosed please find that report, which AEC is submiffing for review. Should you have any questions or require clarification on any aspects of the enclosed, please do not hesitate to contact our office at [805] 83~-~646. Respectfully yours, Advanced Environmental Concepts, Inc. ~dinator / Office Administrator Attachments: Report [4] cc: Mr. Gene Bolton · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND · mADVANCED ENVIRONMENTAL CONCEPTS INCm "Advanced Environmental Concepts, Inc. is pleased to present the following: SITE CLOSURE WORK PLAN at Chico and the Man Service Station 23t East t8th Street Counly of Kern · Bakersfield, California This work plan has been prepared for: Gene Bolton, Pro-Tech Specialties Prepared: February {996 · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND Site Closure Work Plan Advanced Environmental Concepts, Inc. Table of Contents Page 1.0 INTRODUCTION t .I Purpose 1 t .2 Scope of Work 1.3 Schedule 2 2.0 BACKGROUND 2 3.0 WORKPLAN 5 4.0 METHODS 5 4.t Boring Methods 5 4.2 Soil Sampling 5 4.3 Field Screening of Soil Samples 5 4.4 Soil Analysis 6 4.5 Abandonment of Vapor Extraction Wells 6 5.0 SITE SAFETY PLAN 6 6.0 REMARKS / SIGNATURES 7 Appendices: A) Project Figures / Maps B) Health and Safety Plan Project: AEC 96P-1640 · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND Site Closure Work Plan Advanced Environmental Concepts, Inc. t .0 INTRODUCTION Mr. Gene Bolton (owner) hos outhorized Advonced Environmentol Concepls, Inc. (AEC) to prepore -'the following work plon for the conformotion sompling ond request for closure report forthe Chico and the Man Service Station (Figure I]. The site address is 231 East 18th Street, Bakersfield, California. The lead agency for this project is the Kern County Environmental Health Services Department [KCEHSD], represented by Mr. Dan Starkey, Hazardous Materials Specialist. 1.t Purpose The conformation soil sampling program described in this work plan has the following objectives: · Advance one soil boring through the approximate center of the gasoline plume and collect soil samples to be submitted to a state certified laboratory for analysis of total petroleum hydrocarbons as gasoline (TPH-g] and benzene, toluene, ethylbenzene, and xylenes [BTEX]; · Use the analytical data to demonstrate that the vapor extraction activities were effective and has subsequently stabilized the contaminate plume. · Upon demonstrating the plume is stable and no longer a threat to groundwater request that no further action be required and final site closure be granted. t .2 Scope of Work The scope of services described in this work plan include: · 1. Locating underground utilities using available properly owner information as well as the Underground Service Alert [USA). 2. Advancing one soil boring in the vicinity of the former underground storage tanks [UST's]. 3. .Soil samples will be collected at predetermined depths to be evaluated in the field. As planned, samples will be collected at approximate 5-foot intervals to total depth in each well, The samples will be collected using a standard California split-spoon sampler. Brass tubes will be steam-cleaned prior to use. The samples will be field-screened and selected samples will be chosen for chemical analysis. 4, Field-screening will be accomplished using a photoionization detector (PID) with a '10.0 eV lamp. ,5. Soil samples for chemical analyses will be collected in brass tubes and sealed with end caps and tape. The sealed tubes will immediately be placed in a cooler chilled with Blue Ice to be transported to a State-certified laboratory under chain- of-custody protocol. Projech AEC 96P-t640 I · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND Site Closure Work Plan Advanced Environmental Concepts, Inc. 6. Selected soil samples will be analyzed for total petroleum hydrocarbons as gasoline [TPH-g] and volatile aromatic [BTEX], using EPA methods 80 t5G and 8020 respectively. 7. Prepare a final report which describes the results of the soil investigation and mitigation. Data included will be drilling methods, sampling methods, chemical analytical results, and conclusions. '! .3 Schedule Advanced Environmental Concepts, Inc. anticipates beginning the work described in this work plan within two weeks of approval by KCEHSD and authorization to proceed from Mr. Gene Bolton. Drilling will commence only after applicable county permits have been obtained. The soil boring is expected to be completed in one day of mobilization to the site. A final report will be prepared summarizing all field remedial operations and laboratory results. The report will be provided within one month of mitigation. 2.0 BACKGROUND On April 21, 1989 Valley Tree Construction supervised the excavation, removal, and disposal of four (4] gasoline UST's from the subject site. Very strong gasoline odors were noted in the soil during the excavation procedures. Former tank locations and sample locations are presented on Figure 2 [Appendix Al. The analytical results of soil samples collected from below the removed UST are presented in Table t. Units are in milligrams per kilogram (rog/kg] which are equivalent to parts per million (ppm]. Table 4 Analytical Results - Soil Samples Tank Removal 4124189 [ppm} Sample I.D. TPH-g Benzene Taluene Xylenes Ethylbenzene TH-I-2' 6900 3t0 920 12'10 220 TH- ~-6' 5600 2 tl3 690 ~1085 ~ 90 TH-2-2' 4300 t50 550 670 t 40 TH-2-6' 7000 230 930 '1520 280 TH-3o2' 5000 85 490 t 230 210 TH-3-6' 2500 ~ 5 ~ 00 472 70 TH-4-2' ND ND ND ND ND TH-4-6' ND ND ND ND ND Project: AEC 96P-1640 2 · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND · Site Closure Work Plan Advanced Environmental Concepts, Inc. Table t [continued] Analytical Results - Soil Samples Tank Removal 4/2tl89 Lopm] Sample I.D. TPH-g Benzene Toluene Xylenes Ethylbenzene TH-5-2' ND ND ND ND ND TH-5-6' ND ND ND ND ND TH-6-2' ND ND ND ND ND TH-6-6' ND ND ND ND ND TH-7-2' ND ND ND ND ND TH-7-6' ND ND ND ND ND TH-8-2' ND ND ND ND ND TH-8-6' ND ND ND ND ND TH-9-2' ND ND ND ND ND TH-9-6' ND ND ND ND ND Detection Umit: 1.0 2.0 2.0 5.0 2.0 ND: Non-detected TPH-g: Total Petroleum Hydrocarbons as gasoline Based on these results, KCEHSD required that a site assessment evaluating the lateral and vertical extent of hydrocarbon impacted soil be performed. On December '12, '1993, four soil borings (B-'l, B-2, B-3, and B-4] were drilled on the subject property. The borings were positioned to evaluate the vertical and horizontal extent of the hydrocarbon migration and advanced using a truck-mounted Mobile B-6t drill rig, equipped with 8-inch O.D. continuous flight, hollow-stem augers. Borings '1, 2, and 4 were drilled to a total depth of 60 feet BGL and boring 3 was drilled to 30 feet BGL. Selected soil samples from these borings were submitted fo Associated Laboratories, Inc., of Orange, California and analyzed for total petroleum hydrocarbons as gasoline [TPH-g) and volatile aromatics (BTXE] using CA DHS and EPA 8020 method, respectively. The analytical results are presented in Table 2. Units are in milligrams per kilogram (rog/kg), which are equivalent to parts per million (ppm}. TABLE 2 Analytical Results Soil Borings t2H5/93 (ppm] Sample I.D. TPH-g Benzene Toluene Xylenes Ethylbenzene B'1-20 ND ND ND ND ND B'1-30 ND ND ND ND ND Bt-40 .1 t 0.80 2.0 0.93 0.11 Praiect: AEC 96P-t640 3 ENVIRONMENTAL CONCE,13TS WITH DESIGN IN MIND Site Closure Work Plan Advanced Environmental Concepts, Inc. TABLE 2 [continued] Analytical Results Soil Borings t 2/t 5/93 Lopm] Sample I.D. TPH-g Benzene Toluene Xylenes Ethylbenzene BI-50 t3 ND ND ND ND B1-55 t9 0.08 0.15 0.06 ND BI-60 ND ND ND ND ND B2-15 4300 ND 2.2 380 4.3 B2-25 2600 0.20 35 300 40 B2-30 9800 45 910 1400 250 B2-35 2700 2.7 130 350 55 B2-40 t4000 t90 t500 2000 370 B2-45 39 0.23 2.0 3.4 0,56 B2-50 4.6 ND 0.85 0,20 ND B2o55 10 0,08 0,02 0.t0 0.01 B2-60 15 ND ND ND ND B3-20 42 ND ND ND ND B3-30 2700 12 200 340 56 B4-30 70 O. 11 1.5 1.3 4.4 B4-50 t6 ND 0.01 0.039 ND B4-60 17 0.02 0.1 0.t6 0.02 D.L.(mg/kg) 1.0 0.005 0.005 0.005 0.005 ND: Non-detected at indicated limit of detection D.L. Detection Limit Upon review of the assessment results KCEHD required that remediation activities be undertaken to obtain acceptable hydrocarbon concentrations. On December 4, 1995 a vapor extraction system was installed and it's operation initiated. Initial vapor concentrations were measured at 91% of the lower explosive limit [LEL) and after eighteen days of operation had dropped off to 21% of the LEL. After allowing the formation to rest for t7 days the LEL returned to 49% then dropped off to 1 I% of the LEL after 30 days. The formation was allowed to rest again for t4 days and a vacuum was reinduced which resulted in the LEL level returning to 52% and dropping off to less than t0% in 3 days and to 7% in 7 days. This pattern of LEL readings indicate that a reduction in hydrocarbons has taken place; therefore, AEC is proposing confirmation sampling. 3.0 WORK PLAN Advanced Environmental Concepts, Inc. proposes to advance one soil boring in the center of the plume and collect six soil samples at t5, 25, 30, 35, 40, and 50 feet BGL for the purpose of achieving the goals stated in this document. The boring location is presented in Figure 3. Project: AEC 96P-t640 4 · ENVIRONMENTAL CONCEPTS WITH OESIGN IN MINE) · Site Closure Work Plan Advanced Environmental Concepts, Inc. 4.0 METHODS The methods to be employed during implementation of the above scope of work are described in the following sections. 4. t Boring Methods The boring will be advanced using a Mobile Drill B-6t rig, or equivalent, with a 8-inch diameter, hollow-stem, continuous-flight auger in accordance with ASTM Method D t452- 80 for soil investigations and sampling by auger borings. At no time shall any water or other liquid be added to the boring. The augers will be steam-cleaned prior to drilling the borings, The lithology and other pertinent data will be recorded on a field boring log in accordance with ASTM Method D 2488-84 for visual description and identification of soils. Cuttings from the boring will be placed on sheets of plastic and covered until verified with analytical results, whether or not the soil is contaminated. 4.2 Soil Sampling Soil samples will be collected through the auger in 2-inch diameter by 6-inch long brass sleeves driven In a split-spoon sampler by a 140-paund hammer with a 30-inch drop in accordance with ASTM Methods D 1586-84 for split-barrel sampling of soil and D 1587-83 for thin-walled tube sampling of soils. The brass sleeves and sampler will be washed in a trisodium phosphate (TSP] or Alconox solution and rinsed in clean, deionized water prior to each use. Soil samples will be collected at selected depths in each boring in order to provide baseline data and confirm prior laboratory results. The total depth of the boring will extend to 5 feet below the last detected indication of contamination. The blow counts, recovery, and lithology will be recorded on the field logs. Lithology will be described in accordance with ASTM Method D 2488-84 [Standard Practice for Description and Identification of Soils). Selected soil samples will be sealed with Teflon tape, .capped, sealed with duct tape, labeled in accordance with EPA protocols, recorded on a chain-of- custody document, placed in a cooler chilled with Blue Ice at 4-degrees centigrade, and transported ~o a State-certified laboratory with the chain-of-custody for the specified analyses. 4.3 Field Screening of Soil Samples Soil samples will be collected using three 6-inch brass tubes installed inside a split-spoon sampler. The middle sample tube will be immediately capped and stored in an iced cooler upon collection. The bottom tube will be used for lithologic description, and the top tube will be used for field screening. The soil collected in the top tube will be capped, and a headspace reading will be obtained using the PID. The standard headspace reading will be noted on the boring log. Praject: AEC 96P-t640 5 · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND Site Closure Work Plan Advanced Environmental Concepts, Inc. 4.4 Soil Analyses The soil samples will be analyzed by a California-certified laboratary using State guidelines and EPA protocols. The samples will be analyzed for total petroleum hydrocarbans as gasoline by EPA method 8015 (gasoline], and volatile aromatic organics [BTEX] by EPA method 8020. 4.5 Abandonment of Vapor Extraction Wells Once final closure is granted the vapor extraction wells will be abandoned by filling the casing with neat cement and the destroying the casing to approximately 5-feet BGL. 5.0 SITE SAFETY PLAN A Site Safety Plan is included as Appendix B which complies with Worker Right-to-Know Regulations and CAC Title 26. Project: AEC 96P-1640 6 ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND Site Closure Work Plan Advanced Environmental Concepts, Inc. 6.0 REMARKS I SIGNATURES This work plan represents the professional opinions of Advanced Environmental Concepts, Inc. -'These opinions are based on currently available data and were arrived at in accordance with accepted hydrogeologic and environmental engineering practices. No other warranty, expressed or implied, is given. This work plan has been prepared by: Advanced Environmental Concepts, Inc. //Registered Geoloc~t ¢5504 ~',,' ~~?/~/' Cedified Hydrogeologist ¢156 This work plan has been reviewed ~r~ject Hydrogeologist ~gistered Environmental Assessor DOC16FV Project: AEC 96P-1640 7 · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND Advanced Environmental Concepts;. Inc. · ENV~AL ~ WEH ~S~N IN M~D * 4400 ASHE ROAD. ~205 · BAKERSFIELD. CA 93313 805/831-1646 * F~ 805/831-1771 C~f S~ I I EC -SITE LOCATION MAP- FIGURE A Chico and the Man Service Station 1 231 East 18th Street ADVANCED ENVIRONMENTAL CONCEPTS County of Kern · Bakersfield, CA P.O. BOX 40672 BAKERSFIELD, CA 93384 EAST 18th STREET .............. FORME~ ~l¢lNG FORMER TANK PIT ~ [ :{i ND i ITl33 I ~ SAMP~ L~A~ON ~ ~ TPH-gINPPM SC~ ADV~EO E~NME~ ~E~ P.O. ~x~ ~RSR~, CA ~ ~un~ of Kern · ~ersfield, CNffomia E. 18th STREET ·. n Plume ~/,,,,,,,,,,,,,,,,,,' '~ · BUILDING VACANT LOT FENCE · SOIL BORING LOCATION ~ PROPOSED CONFIRMATION BORING LOCATION l 1' = 10' /~-- -Boring Location Map- FIGURE ,~ aw~o,uaa-~.co~caws ac, Chico and the Man Service Station 3 ADVAJVCED ENVIRONMENTAL CONCEPT~ 231 East 18th Street P.O. ~ox 4o~= a~J~RSRe3.~, CA ~__~4County of Kem· Bakersfield. Califomla Advanced EnvirOnmental Concepts, Inc. · ENVIRONMENTAL CONCEPTS WITH DESIGN IN 4400ASHEROAO. #206 · BAKERSFIELD. CA93313 805/831-1646 ,, FAX 8051831-177'1 Site Closure Work Plan Advanced Environmental Concepts, Inc. Health & Safety Plan,_ for Chico and the Man Service Station 231 East t 8th Street County of Kern · Bakersfield, California Introduction: A Site Safely Plan (SSP] has been designed to address safety provisions needed during the site soil assessment / remediation. Its purpose is to provide established procedures to protect all on-site personnel from direct skin contact, inhalation, or ingestion of potentially hazardous materials that may be encountered at the site. The SSP establishes personnel responsibilities, personal protective equipment standards, decontamination procedures and emergency action plans. Advanced Environmental Concepts, Inc. seeks to enter the Chico and the Man Service Station property for the purpose of drilling, soil sampling, and well installation. Soil samples will be collected during drilling operations. Each sample to be chemically analyzed will be collected in a brass sleeve, capped with lined plastic lids, sealed with tape and placed on ice in a chilled cooler. Chain-of-custody protocol will be followed. Drilling equipment will be transported to the site and operated by: Melton Drilling Company 7101 Downing Avenue Bakersfield, California 93308 Contractor's License ~508270 This SSP describes means for protecting all on-site personnel from contamination or personal injury while conducting drilling and installation activities. As described below, we will strive to meet all requirements promulgated by the California Department of Health Services. Responsibilities of Key Personnel: All on-site personnel have been assigned key responsibilities. Mr. Jonathan Buck will serve as Project Manager and on-site Geologist. He will also serve as Site Safety Officer (ssa].. As ssa, Mr. Buck will assure that on-site personnel have received a copy of the SSP. Personnel will be required to document their full understanding of the SSP before admission to the site. Compliance with the SSP will be monitored at all times by the ssa. Appropriate personal protective equipment, as listed below, will be available and utilized by all on-site personnel. Prior to beginning work, the ssa will conduct a training session to assure that all personnel are aware of safe work practices. In the training session, personnel will be apprised of hazards at the site. The ssa will utilize Material Safety Data Sheets for information on compounds to be encountered. Project: AEC 96P-t640 I Site Closure Work Plan Advanced Environmental Concepts, Inc. Mr. Buck will also be responsible for keeping field notes, collecting and securing samples, and assuring sample integrity by adherence to chain-of-custody protocol. All on-site personnel will take reasonable precautions to avoid unforeseen hazards. After documenting their understanding of the SSP, each on-site employee will be responsible far strict adherence to all points contained herein. Any deviation observed will be reported to the SSO and corrected. On-site employees are held responsible to perform only those tasks for which they believe they are qualified. Provisions of this SSP are mandatory, and personnel associated with on-site activities will adhere strictly hereto. Job Hazard Analyses: Hazards likely to be encountered on-site include those commonly encountered when operating any mechanical equipment, such as the danger of falling objects or moving machinery. Simple precautions will reduce or eliminate risks associated with operating such equipment. An excavation contractor has been employed to deliver and operate all excavating equipment. Qualified personnel only will have any contact with this equipment. All on-site personnel, including the excavation contractor and his employees, are required to wear hard hats when in close proximity to excavating equipment. Latex sampling gloves will be .worn by persons collecting or handling samples to prevent exposure to contaminants. Gloves will be changed between samples. Used gloves are discarded in order to avoid cross-contamination. Proper respiratory equipment will be worn if vapor contaminatian levels on-site exceed State-mandated action levels; a photoionization detector will be used for this purpase. The action level requiring respiratory apparatus will be 5 ppm in the breathing space. Furthermore, no smoking, open flames, or sparks will be permitted on-site. Risk Assessment Summary: Exposure to chemicals anticipated on-site include gasoline, benzene, toluene, and xylenes [BTX]. These chemicals represent hazards because they are moderately to extremely toxic, and most are highly flammable. Threshold Limit Values (I'LV's), Short Term Exposure Limits [STEL's] and Toxicity levels [LD50, oral-rat), all in rog/kg [ppm], are listed below: Compound TLV STEL Toxicity Gasoline 200 300 .... Diesel 50 75 .... Benzene 10 25 4894 Toluene '100 150 5000 Xylene '100 '150 4300 Benzene is a known carcinogen. PraJect: AEC 96P-t640 2 Site Closure Work Plan Advanced Environmental Concepts, Inc. Exposure Monitorina Plan: A PID will be used to monitor vapor concentrations around the site. Should concentrations exceed "TLV's, protective measures will be taken. Passive dosimeter badges will be placed in,downwind locations if PID readings indicate high levels of volatile organics in the breathing space. Personal Protective Equipment: On-site personnel will have access to respirators with organic vapor cartridges. Replacement cartridges will be available on-site as needed. When handling samples, the on-site Geologist will wear latex gloves. Hard hats will be worn by all on-site personnel when in proximity to drilling equipment. Work Zones and Securily Measures: Access to the site will be restricted to authorized personnel. A set of cones, placards, or wide yellow tape surrounding the site will define the perimeter, if needed. The Project Manager will be responsible for site security. Decontamination Measures: Avoidance of contamination whenever possible is the best method for protection. Common sense dictates that on-site personnel avoid sitting, leaning or placing equipment on possible contaminated soil. All personnel will be advised to wash their hands, neck and face with soap and water before taking a break or leaving the site. Respirators will be washed with soap and water following each day's use. Excavation and sampling equipment used will be decontaminated by steam-cleaning. Sampling equipment will be decontaminated before each sample is taken. General Safe Work Practices: On-site personnel will be briefed each day in "tailgate" safety meetings as to the day's goals and equipment to be used. Anticipated contaminants and emergency procedures will be reviewed. Appropriate personal protective equipment will be worn and verified as correct by $SO, including respirator fit. Excavation and sampling equipment will be steam-cleaned before being transported on-site. Split-spoon sampling equipment will be cleaned before each use. Augers will be steam-cleaned between borings. The on-site Geologist will oversee operations and log borings. The Sample Coordinator will assure that proper protocol is adhered to at all times regarding the collection and handling of samples. Project: AEC 96P-1640 3 Site Closure Work Plan Advanced Environmental Concepts, Inc. Training! Requiremenls: The SSO will conduct a pre-site training session which will include explanations of MSDS forms, contaminant properties, warning signs, health hazard data, risk from exposure, and emergency First Aid. All pertinent chemicals are to be covered, and the SSO will assure that everyone fully understands site hazards. Medical Surveillance Proaram: According to CFR 29, 19t0.'120, Paragraph [fi, employees who wear respirators thirty [30] days or more during one ['1] year or who have been exposed to hazardous substances or health hazards above established permissible exposure limits are required to be medically monitored. All site personnel will be required to submit to a complete chemical, physical examination within the past year. Record Keepina: Documentation will be kept on file regarding personnel exposed to contaminant hazards on the job site according to OSHA regulations. Documentation that employees have received training on the SSP, respiratory protection, MSDS forms, and all emergency procedures will be included. These will be reviewed during the preliminary "tailgate" training meeting. Exposure records filed for each job will be kept for thirty years to meet requirements. Included in the files will be the names and Social Security numbers of employees, medical evaluations, on- the-job logs from entry to exit, First Aid administered, visits on-site by outside persons and personal air monitoring records. Contingency Plans: In the event of an accident, injury, or other emergency, the Project Director, Senior Praject Manager, or other person, will notify the appropriate government agencies or individuals as follows: Kern County Environmental Health Department 2700 M Street Bakersfield, California 93301 [805] 864-3636 2. Police, Fire, or Ambulance Emergency 3. Nearest Emergency Hospital: Bakersfield Memorial Hospital 420 34th Street Bakersfield, California 9330~ [805] 327-'1792 Project: AEC 96P-~640 4 Site Closure Work Plan Advanced Environmental Concepts. Inc. I have read the preceding Health and Safety Plan and understand the contents herein: "NAME: COMPANY Project: AEC 96P-t640 5 February 26, 1996 To: State Water Resources ContrOl Board UST Cleanup Fund P.O. Box 94244-2120 Sacramento, CA 94244-2120 From: Gene Bolton P.O. Box 11324 Midland, TX 79702 Sub3: Commitment and Progress Account 000071 Attn: Mr. Steve Parada Please review the following outline of activities regarding the above account # 000071, property located at 18th and Sonora Streets in Bakersfield, CA over the last five years; 1) Tanks and flow lines were removed and disposed of (cost $6,000100) 2) Saturated soil was removed, disposed of and replaced with new soil (cost $8,100.00) 3) Five shafts were drilled into contaminated area to take soil tests 4) Four shafts were drilled to install mist extractors after permission was obtained from Air Quality Control Department 5) A total of $14,988.00 of recoverable expenses had been invested by mid 19~5. $9,988.00 was reimbursed to our operation by the U.S.T. Cleanup Fund. The $5,000.00 deductible was subtracted at this juncture. 6) we have invested $10,121.57 more in our cleanup efforts. I will be sending this in for processing shortly 7) we now have the laboratory tests for January 1996 which read as follows: Benzene 0.11 ppm Tolulene 0.43 ppm Ethylbenzene 0.14 ppm Xylenes 0.074 ppm TPH (gasoline) 4.3 ppm 8) We have determined that a flume is negligible 9) The water table at this location is 260 feet underground 10) There are no water wells within three miles distance from the property. Let me say in conclusion that I wish to persevere in this endeavor until we have convincingly protected our water table. However, Hy contractor and other professionals feel that we may have worked the project to acceptable completion. I don't wish to spend money needlessly and I am sure U.S.T. Fund has the same feelings. We will continue operations until notified otherwise. Thank You and Regards, CC= D. Starkey M. Ottobferry, Atty. File ltase Closure Summe Leaking Underground Fuel Storage Tank Program I. Agency Information Date: ~-~-9~ 1 Agency Name: KERN COUNTY ENVIRONMENTAL HEALTH SERVICES DEPT. Address: 2700 "M" STREET, SUITE 300 ICily/State/Zip: BAKERSFIELD, CA 93301 Phone: (805)862-_8757_ I Responsible Staff Person: DAN STARKEY Title: HAZARDOUS MATERIALS SPECIALIST II. Case Information Site Facility Name: CHICO & THE MAN Site Facility Address: 231 EAST 18th STREET ~RB LUSTIS Case No: 150040 I Local Case No: 150040 I LOP Case No: 150040 URF filing date: 3-26-96 SWEEPS No: 17785 'Responsible Parties Addresses Phone Numbers VIRGINIA NIELSEN C/O GENE BOLTON P.O. BOX 11324, MIDLAND, TX 79702 Tank No. Size in Gal. Contents Closed in-Place/Removed Date I 2000 GAS REMOVED JULY 30, 1989 2 500 GAS REMOVED SAME 3 500, #4-500 GAS REMOVED SAME II. Release and Site Characterization Information Cause and type of release: HOLES IN TANKS Site characterization complete? X~ Yes [] No I Date approved by oversight agency: MARCH l, 1994 Wells Installed? [] Yes X~] No I Number: 0 I Proper screened interval? [] Yes [] No Monitoring Highest GW depth below ground surface: 200 FEET I Lowest depth: 230 I Flow direction: SOUTHEAST Most Sensitive Current Use: VACANT LOT Are drinking water wells affected? [] Yes X~ No Aquifer name: Is surface water affected? r"l Yes x[:] No Nearest/affected SW name: Off-site beneficial use impacts (addresses/locations): NONE Report(s) on file? XE] Yes [] No I Where is report(s) filed? KCEHSD Treatment and Disposal of Affected Material Material Amount (Include Units) Action ('l'reu;,,,ent or Disposal w/[)esU~n) Date Tank 4 RECYCLING VALLEY TREE CONSTRUCTION, BAKERSFIELD JULY 30, 1989 Piping UNKNOWN SAME SAME Free Product NONE Soil 6280 CUBIC yARDs VAPOR EXTRACTION MARCH 26, 1996 Groundwater NONE Barrels NONE HMI03 Case Closure Summary Page 2 LeaKing Underground Fuel Storage Tank Program III. Release and Site Characterization Information (continued) Maximum Documented Contaminant Concentrations - - Before and After Cleanup Soil (ppm) Water (ppm) Soil (ppm) Water (ppm) Contaminant Contaminant Before After Before After Before After Before After TPH '(Gas) 14,000 680 Xylene 2,000 120 TPH (Diesel) NA Ethylbenzene 370 21 Benzene 190 24 Oil & Grease NA Toluene 1,500 120 Heavy metals NA Other Other Comments (Depth of Remediation, etc.): THIS PLUME HAD A TOTAL DEPTH OF 45 FEET. VAPOR EXTRACTION WAS STARTED IN DECEMBER 95 AND RAN UNTIL MARCH 96. THE CONFIRMATORY BORING DRILLED ON 3-25-96 SHOWED CONTAMINATION ND DOWN CLOSE TO 40 FEET. THE LEVELS RECORDED ABOVE ARE FROM THAT DEPTH. THE CONTAMINATION DECREASED TO TPH 160 PPM AT 45 FEET, AND NON-DETECT FOR ALL CONTAMINANTS AT 50 FEET. THE REASON THE 40 FOOT SAMPLE HAD THE HIGHEST LEVELS IS THAT THE SOIL AT THAT DEPTH CONSISTED OF A SILTY SAND THAT HELD THE CONTAMINANTS TIGHTER THAN THE SANDS. IV. Closure Does completed corrective action protect existing beneficial uses per the Regional Board Basin Plan? X~ Yea [] No Does completed corrective action protect potential beneficial uses per the Regional Board Basin Plan? X~ Yes [] No Does corrective action protect public health for current land use? X~ Yes [] No Site management requirements: NONE Should corrective action be reviewed If land use changes? [] Yes X~] No Monaor~ng We,,s Decomm,ss,oned: [] yes I-3 No I Number Decomm'~s'oned= I Number Retained= List enforcement actions taken: NONE List enforcement actions rescinded: NONE V. Local Agency Representative Data Name: DA~I.~s~'~ ARKEY Title: Hazardous Materials Specialist Signature: j~ ~ ~ Date: MARCH 26, 1996 VI. RWQCB Notification II Date Submitted to RB: , ,RBResponse: , II _ RWQCB Staff Name: Title: Date: VII. Additional Comments, Data, etc. THIS SITE IS NOW CONSIDERED A LOW RISK SITE AND IS BEING CLOSED AFTER THE MAJORITY OF CONTAMINATION HAS BEEN REMOVED. HM103/150040 ENVIRONMENTAL HEALTH Sr.~ICES DEPARTMENT. ~SOUFICE MANAGEMENT AGENCY STEVE McCALLEY, R.E.H.S., Director ~ DAVID PRICEIII, RMA DIRECTOR 2700"M" STREET, SUITE 300 ~ Engineering & Suwey Services Department BAKERSFIELD, CA 93301 ~ Environmental Health Services Department Phone: (805)862-8700 Planning Department FAX: (805) 862-8701 Roads Department Gene Bolton March 6, 1996 Pro-Tech Specialties P.O. Box 11324 Midland, Texas 79702 Subject: Location: 231 E. 18th Street, Bakersfield, CA Known As: Chico & the Man Permit #: 150040 Dear Mr. Bolton: This Department has reviewed the confirmation soil assessment workplan dated February 1996 prepared by AEC Inc. for the above- referenced facility. This workplan is satisfactory for the investigation of remaining contamination present at this underground tank site. Please notify this office 48 hours prior to retrieving soil samples. Within thirty (30) days after sampling and laboratory analyses are completed, a comprehensive report describing the extent of the contamination plume must be submitted to this office for review. The report should discuss recommendations for site closure. If you have any questions, please call me at (806) 862-8757. Sincerely, By: Dan Starkey 8azardous Materials Specialist Hazardous Mat%rials Management cc:AEC Inc. 4400 Ash Rd. #206 Bak. CA 93313 starkey/150040.ver STATE OF CALIFORNIA - CALIFORNIA ENVIROI~ PROTECTION AGENCY PETE WILSON, Governor STATE WATER RESOURCES CONTROL BOARD DIVISION OF CLEAN WATER PROGRAMS 2014 T STREET, SUITE 130 P.O. BOX 944212 SACRAMENTO, CALIFORNIA 94244-2120 (916)227-4307 (916)227-4 3o (FAX) NAR 0 ? Mr. Gene Bolton P.O. Box 11324 Midland, TX 79702 UNDERGROUND STORAGE TANK CLEANUP FUND, CLAIM NO.71, VIRGINIA NIELSEN (CLAIMANT), 18TH STREET EAST AND SONDRA STREET, BAKERSFIELD, CA (SITE) In response to your February 26, 1996 letter, I have the following comments: With regard to the cleanup process at the subject site, you state "...I wish to persevere in this endeavor until we have convincingly protected our water table. However my contractor and other professionals feel that we may have worked the project to acceptable completion." You conclude by stating "We will continue operations until notified otherwise." As you may have heard, the Lawrence Livermore National Laboratory has presented a final report to the State Water Resources Control Board entitled "Recommendations to Improve the Cleanup Process for California's Leaking Underground Fuel Tanks". The findings of the report indicate that passive bioremediation should be considered as the primary remediation tool in most cases once the fuel leak source has been removed. As a result of the findings, it has been determined that "low risk" soil only cases be closed. With regard to "low risk" groundwater cases, active remediation should be replaced with monitoring to determine if the plume is stable. You should contact your local regulating agency and inquire if this is considered a "low risk" site. The Fund will only reimburse costs incurred for corrective action if the corrective action work is directed by the local re(3ulatinc~ ac~ency. If your contractor feels that the site has been remediated to acceptable standards, they should present their recommendation to the local agency. In addition, in order to ensure that any future costs are reimbursable from the Fund, you must submit proposed activity(les) and their associated costs to this office for cost pre- approval. If you have any questions, please contact me at (916) 227-4486. Sincerely, ORIGINAL SIGNED BY Steve Parada UST Cleanup Fund Reimbursement Section cc: County of Kern Regional Water Quality Control Board 2700 M Street, Suite 300 3614 East Ashlan Avenue Bakersfield, CA 93301 Fresno, CA 93726 · ADVANCED ENVIRONMENTAL CONCEPTS INC' Advanced Environmental Concepts, Inc. is pleased to presenl lhe following: CONFIRMATION BORING ASSESSMENT REPORT for Chico and the Man Service Station 231 East t8th Street Count,/of Kern · Bakersfield. California This report has I~,ccn prepared for: Gene Bolton, Pro-Tech Specialties Prepared: April t996 · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND * 4400 ASHE ROAD. #206 * BAKERSFIELD. CA93313 805/831-1546 · FAX 805/831-1771 Confirmation Boring Assessment Report Advanced Environmental Concepts, Inc. Table of Contents Pal:le 1.0 INTRODUCTION I 2.0 BACKGROUND t 3.0 SITE CHARACTERISTICS 3 3.1 Site Description 3 3.2 Regional Geology 4 3.3 Local Geology 4 3,4 Hydrogeology 4 4.0 EXTENT OF HYDROCARBON MIGRATION 4 4.1 Soil Plume 4 5.0 ASSESSMENT ACTIVITIES 5 5. I Decontamination Procedures 5 5.2 Soil Borings 5 6.0 ANALYTICAL RESULTS 6 6.1 Soil Samples 6 6.2 Residual Extent of Hydracarbans 6 7.0 CONCLUSIONS 7 8.0 RECOMMENDATIONS 8 9,0 LIMITATIONS 8 I 0.0 CLOSING 9 Appendices: IAI Project Maps / Figures [BI Boring Logs ICI Laboratory Reports / Chain-of-Custody Documents Project: AEC 96V-1637 · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND * 4400 ASHE ROAD. #206 ° BAKERSFIELD. CA 93313 805/831-1646 ° FAX 805/831-1771 Confirmation Boring Assessment Report Advanced Environmental Concepts, Inc. 1.0 INTRODUCTION This report presents the results of a confirmation soil investigation conducted by Advanced Environmental Concepts, Inc. (AEC) ta evaluate the effectiveness of the vapor extraction system IVES] operating at the Chico and the Man Facility, 231 East 18th Street, Bakersfield, California [Appendix A, Figure Contained in this report is background information regarding existing site characteristics, regional geologic and local hydrogeological profiles, and the project history. Also included in the following sections are the objectives and scope of investigation, detailed investigative procedures, and subsequent findings. Finally, AEC provides an evaluation of said findings and makes related conclusions and recommendations. The report appendices contain project maps and figures [Appendix A), soil boring logs [Appendix B), and laboratory reports/chain-of-custody documents [Appendix C). 2.0 BACKGROUND On April 21, 1989 Valley Tree Construction supervised the excavation, removal, and disposal of four gasoline UST's from the subject site. Very strong gasoline odors were noted in the soil during the excavation procedures. Former tank locations and sample locations are presented on Figure 2 (Appendix A): The analytical results of soil samples collected from below the removed UST are presented in Table I. Units are in milligrams per kilogram (mg/kg] which are equivalent to parts per million (ppm). Table t Analytical Results - Soil Samples Tank Removal 4121189 [pp ] Sample I.D. TPH-g Benzene Toluene Xylenes Ethylbenzene TH-I-2' 6900 3t0 920 12 I0 220 TH-I-6' 5600 210 690 1085 190 TH-2-2' 4300 150 550 670 t40 TH-2-6 7000 230 930 1520 280 TH-3-2' 5000 85 490 1230 2 I0 TH-3-6' 2500 t5 t00 472 70 TH-4-2' ND ND ND ND ND TH-4-6' ND ND ND ND ND TH-5-2' ND ND ND ND ND TH-5-6' ND ND ND ND ND TH-6-2' ND ND ND ND ND TH-6-6 ND ND ND ND ND Project: AEC 96V-t637 t · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND · 4400 ASHE ROAD. #206 * BAKERSFIELD. CA 93313 805/831-1646 · FAXS05/831-1771 Confirmation Boring Assessment Report Advanced Environmental Concepls, Inc. Table I [continued] Analytical Results - Soil Samples Tank Removal 4/21189 Lopm] Sample I.D. TPH-g Benzene Toluene Xylenes Ethylbenzene TH-7-2' ND ND ND ND ND TH-7-6' ND ND ND ND ND TH-8-2' ND ND ND ND ND TH-8-6' ND ND ND ND ND TH-9-2' ND ND ND ND ND TH-9-6' ND ND ND ND ND Detection Limit: 1.0 2.0 2.0 5.0 2.0 ND: Non-detected TPH-g: Total Petroleum Flydrocarbans as gasoline Based on these results, KCEHSD required that a site assessment evaluating the lateral and vertical extent of hydrocarbon impacted soil be performed. On December 12, 1993, four soil borings lB-I, B-2, B-3, and B-4] were drilled on the subject property. The borings were positioned to evaluate the vertical and horizontal extent of the hydrocarbon migration and advanced using a truck-mounted Mobile B-6 t drill rig, equipped with 8-inch O.D. continuous flight, hollow-stem augers. Borings I, 2, and 4 were drilled to a total depth of 60 feet BGL and boring 3 was drilled to 30 feet BGL. Soil boring locations are plotted on Figure 3. Selected soil samples from these borings were submitted to Associated Laboratories, Inc., of Orange, California and analyzed for total petroleum hydrocarbons as gasoline (TPH-g) and volatile aromatics [BTXE) using CA DHS and EPA 8020 method, respectively. The analytical results are presented in Table 2. Units are in milligrams per kilogram [mg/kg], which are equivalent to parts per million [ppm]. TABLE 2 Analytical Results Soil Borings 121t5/93 [ppm] Sample I.D. TPH-g Benzene Toluene Xylenes Ethylbenzene Bt-20 ND ND ND ND ND BI-30 ND ND ND ND ND Bt-40 t t 0.80 2.0 0.93 0,11 Bt-50 t3 ND ND ND ND BI-55 19 0.08 0.15 0.06 ND Bt-60 ND ND ND ND ND Project: AEC 96V-1637 2 · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND * 4400 ASHE ROAD. #206 ' BAKERSFIELD, CA 93313 805/831-1646 · FAXS05/831-1771 Confirmation Boring Assessment Report Advanced Environmental Concepts, Inc. TABLE 2 [conlinued] Analytical Results ' Soil Borings 121t 5/93 [ppm) Sample I.D. TPH-g Benzene Toluene Xylenes Ethylbenzene B2-t5 4300 ND 2.2 380 4.3 B2-25 2600 0.20 35 300 40 B2-30 9800 45 9t0 1400 250 B2-35 2700 2.7 130 350 55 B2-40 14000 t90 1500 2000 370 B2-45 39 0.23 2.0 3.4 0.56 B2-50 4.6 ND 0.85 0.20 ND B2-55 t0 0,08 0.02 0.10 0.01 B2-60 15 ND ND ND ND B3-20 42 ND ND ND ND B3-30 2700 12 200 340 56 B4-30 70 0. t I t .5 1.3 4.4 B4-50 16 ND 0,01 0.039 ND B4-60 17 0.02 0, I 0,16 0.02 D.L.[mg/kg] 1.0 0.005 0.005 0.005 0,005 ND: Non-detected af indicated limit of detection D.L. Detection Limit Upon review of the assessment results KCEHD required that remediation activities be undertaken to obtain acceptable hydrocarbon concentrations. On December 4, 1995 a vapor extraction system was installed and it's operation initiated. Vapor extraction points are presented on Figure 2. initial vapor concentrations were measured at 91% of the lower explosive limit (LEL] and after eighteen days of operation had decreased to 21% of the LEL. After allowing the formation to rest for t7 days the LEL returned to 49% then dropped off to 1 t% of the LEL after 30 days of the operation. The formation was allowed to rest again for 14 days and a vacuum was reinduced which resulted in the LEL level returning to 52% and decreasing to less than 10% in 3 days and to 7% in 7 days. This pattern of LEL readings indicate that a reduction in hydrocarbons has taken place, for this reason AEC submitted a Confirmation Boring Workplan to KCEHD. On March 21, 1996 AEC implemented the work plan and this report presents the results. 3.0 SITE CHARACTERISTICS The following sections summarize the project site features and conditians along with regional and local geolagical and hydrological characteristics. Project: AEC 96V-1637 3 · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND * 4400 ASHE ROAD. #206 * BAKERSFIELD, CA 93313 805/831-1646 · FAX805/831-1771 Confirmation Boring Assessment Report Advanced Environmental Concepts, Inc. 3.t Site Description The Chico and the Man Service Station is located on the southwest corner of the intersection of East ~Sth and Sonora Streets, in Bakersfield, California. The general area is comprised of light industry and related services. The subject site is at an average elevation of 385-feet above mean sea level with minimal topographic relief. The properly is presently a vacant lot. 3.2 Regional Geology The subject property is located in the Southern San Joaquin Valley [Valley] which is a part of the Central Valley of California. The Valley forms the southern two-thirds of the Central Valley and is characterized as a broad structural trough. It is bordered on the east by the Sierra Nevada Range and on the west by the Coast Range [Diablo and Temblor Mountains). The Valley extends 250 miles southeastward from the confluence of the San Joaquin and Sacramento Rivers to the Tehachapi and San Emigdio Mountains. The width ranges from 25 miles wide near the Kern River to approximately 55 miles wide near the Kings River, with an approximate average width of 40 miles. Geology of the southern Valley consists of a Pre-Tertiary basement complex overlain by marine and non-marine sedimentary rocks of Tertiary age. These rocks are composed of consolidated sandstones, siltstones and shales which thicken from northeast to southwest. The Valley was once an inland sea of comparatively shallow depth that continued to subside due to the ever increasing load of sediments transported and deposited from higher elevations. These' deposits consist of gravels, sands, silts and clays. The majority of the groundwater pumped from the Valley floor occurs within these relatively unconsolidated continental deposits. 3.3 Local Geology The investigated properly is located on alluvial deposits, created from sediments transported and deposited by local streams, and during flood stages of the Kern River. The site is situated in a Iow to moderate energy flood plain environment consisting of weakly consolidated to unconsolidated, poorly bedded sands and silts. 3.4 I-lydrogeology Ground and surface water in the central Bakersfield area is regulated by the Kern County Water Agency. According to the Kern County Water Agency "Water Supply Report-1994", depth to groundwater in unconfined and equivalent wells is estimated at 240-feet below grade level [BGL) at the site. No perched water bearing zones are reported in the area. The water agency's map showing depth groundwater is presented on Figure 4. Project: AEC 96V-t637 4 · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND · 4400 ASHE ROAD. #208 * BAKERSFIELD, CAg3313 805/831-1848 · FAX 8051831-1771 Confin"nafion Boring Assessment Report Advanced Environmenlal Concepts, Inc. 4.0 EXTENTOF HYDROCARBON MIGRATION 4. t Soil Plume The original soil plume as depicted by the analytical results indicated that significant hydrocarbon concentrations extended to a depth of 45 feet BGL, and the highest concentration, t4,000 ppm, was detected in B-2 at 40 feet BGL, Hydrocarbon levels below 100 ppm were detected in B-I and B-4, and below 40 feet BGL in B-2. Plume dimensions . are approximately 60 feet deep by 60 feet wide and forms a nonsymmetric, elongated, spheroid shape that occupies approximately 6,200 cubic yards. The highest concentrations of hydrocarbons are contained within about 785 cubic yards. The areal extent of the original hydrocarbon plume is shown on Figure 3 and a cross-sectional view is presented on Figure 5. 5.0 ASSESSMENT ACTIVITIES 5. t Decontamination Procedures Prior to initiating drilling operations, the augers and associated drilling equipment were thoroughly cleaned using a high-pressure steam-cleaner. In addition, the soil sampler and hand auger were washed in an Alconox solution and double-rinsed in clean, deionized water prior to initial use and between each sampling interval to minimize the possibility of cross.contamination between samples. 5.2 Soil Borings On March 21, 1996 one soil borings [CB-I} was advanced lhrough the center of the former hydrocarbon plume for the purpose of evaluating the effectiveness of the mitigation actions conducted the subject site. The borings were advanced using a truck- mounted, Mobile B-53 drill rig equipped with 8-inch O.D. continuous-flight, hollow-stem augers. The boring location is plotted on Figure 3. Soil samples were collected at t5, 25, 35, 40, 45, and 50 feet BGL by driving a thin-walled steel sampler equipped with three 2-inch X 6-inch brass sleeves a minimum of 18 inches into previously undisturbed soil. The sampler was driven ahead of the augers using a t40- lb. slide hammer with a 30-inch vertical fall. Following each sample drive, the sampler was withdrawn from the borehole and the three brass sleeves were removed. The bottom sleeve was retained for laboratory analysis and prepared by placing Teflon tape and plastic caps over each end, then securing the caps with tape. The samples were labeled, recorded on a chain-of-custody document and placed in an ice chest chilled with Blue Ice and block ice. Soil exposed at each end of the center brass sleeve, as well as the cuttings, were examined for lithologiaal purposes and for any obvious evidence of hydrocarbons. Lithologia descriptions were logged according to the Unified Soils Classification System [USC, S] [Appendix BI. Chain-of-custody protocol was strictly followed to ensure sample integrity and traceability. Upon completion of the above-described procedures, the three borings were plugged with hydrated bentonite followed by a cement slurry to grade level. Project: AEC 96V-t637 5 · ENVIRONMENTAL CONCEPTS WITH [DESIGN IN MIND * 44-00 ASHE ROAD. #206 " BAKERSFIELD. CA 93313 805/831-1646 * FAX 805/831-1771 Confirmation Boring Assessment Report Advanced Environmental Concepts, Inc. 5.2.t Soils Profile The soil profile at the site Consists of silty sands, "clean" sands, and poorly' sorted sands to a total drilled depth of 60 feet BGL. The silty' sands [SM-ML] are commonly tan-brown, slightly to very compact, commonly friable, and slightly to moderately moist. The "clean" sands [SW] are olive gray-buff, moderately dense, unconsolidated, and slightly moist. The paorly sorted sands [SP-GC] commonly consist of olive-gray to white, moderately to very dense, unconsolidated to very consolidated, and slightly moist. The sediments are typical of Iow to moderate energy fluvial depasits subjected to periodic reworking during flood stages. The strata were loosely compacted due to the increasing weight of the overlying sediments. 6.0 ANALYTICAL RESULTS 6.4 Soil Analyses Soil sample analyses were performed by SMC Laboratory, Inc., a California-certified laboratory, to determine the presence and concentration of total petroleum hydrocarbons as gasoline [TPH-g] and volatile aromatics [BTXE] by CA DHS and EPA method 8020. The analytical results are tabulated below, and the laboratory reports are provided in Appendix C. Units are in milligrams per kilogram [mg/kg] which are equivalent to parts per million [ppm]. Table 3 Analytical results - Confirmation Borings 3121/96 [ppm} Sample I.D. TPH-g Benzene Toluene Ethylbenzene Xylene CB-I-~5' 98 ND ND ND ND CB-~-25' ND ND ND ND ND CB-'1-35' ND ND ND ND ND CB- ~-40' 680 24 ~ 20 2 ~ '120 CB-'1-45' '160 4.2 23 4.9 3 '1 CB-~-50' ND ND ND ND ND Detection Limit (rog/kg] t.0 0.005 0.005 0.015 0.005 ND: Non detected TPH-g: Total Petroleum Hydracarbons as Gasoline 6.2 Residual Extent of Hydrocarbons Analytical results recorded TPH-g concentrations of 98 ppm, 680 ppm, and 460 ppm for soil samples CB-~-IS', CB-~-40', and CB-~-45', respectively. All other soil samples were below detectable limits for all canstituents analyzed. These laboratory results portray a post treatment plume that is discontinuous and fragmented into isolated segments. The post treatment plume is show in comparison to the pre-treatment plume on Figure (~. Project: AEC 96V-~637 6 · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND · 4400 ASHE ROAD. #206 * BAKERSFIELD. CA93313 805/831-1646 · FAX 805/831-1771 Confirmalion Boring Assessment Report Advanced Environmental Concepts, Inc. The highest recorded TPH-g concentration in the untreated plume was 14,000 ppm at a depth of 40 feet BGL. A TPH-g concentration of 680 ppm was recorded in soil sample CB- 1- 40' which was collected from the post treatment plume at the same relative position within the plume and represents a 95% change (reduction] in hydrocarbon concentration. The 40 to 45 foot interval is represented by a silt and clayey silt layer which acts as a retarding layer for downward fluid migration. Fine sand, silt and clay soil types have a residual capacity for gasoline of 7,500 ppm (APl 1989) which is about 1 IX greater than the post treatment recorded high of 680 ppm TPH-g collected from this interval. Given the potential residual capacity of the silt layer, the recorded residual concentration and the absence of overlying contaminants it is highly unlikely that any further downward migration will occur or that the underlying groundwater located approximately 200 feet below the bottom of the residual plume will be impacted. 7.0 CONCLUSIONS Based on the results of the soil and groundwater investigation AEC tenders the following findings: · In t989 four UST's were removed from the Chico and the Man facility; · Analytical results for the soil samples collected during the tank removal activities indicated that an unauthorized release had occurred. · Four soil borings were advanced for the purpose of evaluating the extent of hydrocarbon migration in the soil; · After all assessment work was performed the hydrocarbon plume in the soil was estimated to extend to a depth of 45 feet BGL with the highest concentration, 14,000 ppm, being detected in B-2 at 40 feet BGL. Plume dimension were approximately 60 feet deep by 60 feet wide and formed a nonsymmetrical, elongated, spheroid shape that occupied approximately 6,200 cubic yards. · A vapor extraction system was installed and operated from November, t995 to the present. Initial vapor concentrations were measured at 91%of the lower explosive limit [LEL] and after eighteen days of operation had decreased to 21% of the LEL. After allowing the formation to rest for 17 days the LEL returned to 49% and dropped off to 1 I% of the LEL after 30 days. The formation was allowed to rest again for 14 days and a vacuum was reinduced which resulted in the LEL level returning to 52% and decreasing to less than 10% in 3 days and to 7% in 7 days. · One confirmation boring was advanced through the center of the former hydrocarbon plume and analytical data collected indicated that the high TPH-g concentration of 680 ppm was present in CB-I at 40 feet BGL and a Iow TPH-g concentration of 98 ppm at 15 feet BGL. This is a -95% [reduction] change from the previous recorded high-concentration of 14,000 ppm, · Confirmation baring data also revealed that no contaminated soil interval exceeded 10 feet in thickness and no contaminated soil was detected below 45 feet BGL. Project: AEC 96V-1637 7 · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND * 4400ASHEROAD.#206 · BAKERSFIELD. CA93313 805/831-1646 · FAXS05/831-1771 Confirmation Boring Assessment Report Advanced Environmental Concepts, Inc. · The distance between the migrated plume and underlying groundwater is approximately 200 feet. 8.0 RECOMMENDATIONS Based on the results of the confirmation sampling and the findings presented in this report AEC concludes that there has been a significant volumetric reduction of detectable hydrocarbons in the soil and that the hydrocarbon plume is stable and poses no threat to the underlying groundwater. For these stated reasons, AEC recommends that no further remedial action be required and that final site closure be granted. 9.0 UMITATIONS This work has been performed in accordance with generally-accepted environmental science and engineering practices. The soil samples for this project were obtained as directed by the on- site regulatory agency representative, hence the. analytical results are indicative of discrete samples and are not meant to be misconstrued or representative of unsampled subsurface areas. Conclusions and recommendations are based upon information collected and compiled during this investigation. No other warranty, expressed or implied, is given. Project: AEC 96V-1637 8 · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MI~D * 4400 ASHE ROAD. #206 · BAKERSFIELQ CA 93313 805/831-1646 · FAXS05/831-1771 Confirmation Boring Assessment Report Advanced Environmental Concepts, Inc. 10.0 CLOSING Advanced Environmental Concepts, Inc. appreciates the opportunity to be of service to Chico and the Man on this project. If there should be any questions or additional information required regarding this report, please do not hesitate to contact our office at (805) 831-1646. This Environmental Site Assessment has been prepared by'. Advanced Environmental Concepts, Inc. A. Dunwoody ~ //Registered Geologist #5504 Certified Hydrogeologist #156 This Environmental Site Assessment has been reviewed by: konmental Assessor #1508 ~ ~}oc22E0 Project: AEC 96V-1637 9 · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND · 4400ASHEROAD.#206 · BAKERSFIELD. CA 93313 805/831-1646 · FAX 805/831-1771 Advanced Environmentai'-Concep~s;.Inc.' ... :.. , , ~; ,;....- ~;i !.. .... . ,. ,...'~ ....- :- ,.' ..:.-; . ;., . '. . -. , .' ,.'.--;:. '.,,,- ,;':;, '.: . ,_? '' ' -. '- - '~' ~ ".'"'~"'. '-. '~ ':. .,..' '' ~ ' ' ' ' ,. i ' . ,- ,.~ '., : - . . . ;....:-;..';:' ;'.-?~,~. , .,~. -. .. . .; .,..,.. .,.; .......... .-. ,:.~.,. Appendix. A '... ,.~ · ,-. · .,L,'..~' ~ '.'- :.....-... - . ~ ,.. : ' . . ~, ' '-:'....,.;.".'~ -_ . . ... '.., ;'.:-'~ .":'.; ":. ' ::. i ' ', ; ,,... ,,.. ; ..-. .--.., ' . ·. . . " -..;,. -,- '" / FIGURES.,'..: · - ~" ,PROJECT MAPS }:'~'~::-" ,:';.:;'~:i:;':":: .... . " : · ', ' ' ' . - .. -' .. :... : . ';... . . .....,,,. ,:..,.:, -,'.: ;~ ," '-': ,-- . ":.~:.-'"-" ':.;" . '"/'. 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TH-0 FORMER PIPING . ~. ii TH-5 TH-4 FORMER TANK PIT ,..,.!" 2soo~ ............... -:i TH-1 ~11 ' TH-2 ~ S600 7000 { TH-1 SAMPLE I.D. ' ........................................................................................... j[ ~ SAMPLE LOCATION SCALE i I~ Chico and the Man Service Station 231 East 18th Street ADVANCED ENVIRONMENTAL CONCE'PT~ P.O. eox4os2~ e,4KERSF/ELD, CA ~ Counht of Kern · I~kersfield, C~li~omia E. 18th STREET VE-~ VACANT LOT FORMER TANK PIT / ~l~b ~RACTION ~LL J, ~ CONFIR~TION BORING ~ ', , I ~ ~'-~o' I i ~,~ -Boring and Vadose Well Map- FIGURE 231 East l~h Street ADVANCED E~ME~AL CONCE~ P.O. ~X~ ~RSRE~, CA ~ ~un~ of Kern · B~emfield, C~ifomia I I EAST ]013000[ DDDDD~_~[ DODDDDDr KERN COUNTY WATER AC~.NCY IMPROVEMENT DISTRICT NO. 4 DEPTH TO WATER IN WELLS September 1994 AEC - Depth to Groundwater Map- FIGURE From Kern County Water Agency Chico and the Man Service Station 4 ADV.4NCED ENVIRONMENTAL CONCEP"r~ 231 East 18th Street P.O. BOX40672 BAKERSFIELD, CA 93384 County of Kern · Bakersfield, California l B4 B3 B2 B1 III -Original ~ydroearbon ~lum~- / EC Ch'~ ~d ~e M~ So~ Station 5 231 East 18~ S~t ADVANCED E~RONME~AL ~NCEP~ P.O. BOXY72 BA~RSRE~, CA ~ ~un~ of Kern · B~ersfield, C~Eomia NORTH SOUTH A t CB- 1 ORIGINAL AREA OF TOTAL HYDROCARBON PLUME /"' AREAS HYDROCARBONS -- ND ~~',';'~'~'i'~- · ',' '.'.'.'.'.'.'.'.'/.'..'.'.'.'.'.'.'.':' ':~','.' ' ''~.' --~' ND 50' / SCALE I Post Remodiation FIG U RE AEC -Hydrocarbon Plume- Chico and the Man Service Station 6 ADVANCED ENVIRONMENTAL CONCEPT~ 231 East 181fl Street P.O. BOX4067'2 BAKERSF/ELD, CA 93384 County of Kern · Bakersfield, California Advanced Environmental ConCepts, .Inc. * ENVIFIONMENTAL ~PTS wI'rH DESIGN IN ~ · 4400ASHE FtOAO. #20E~ · BAKEEFISF'IELD. OA g3313 8051831-1G4~ '* FAX 8051831-1771 i~I~LE tO U.S.C.S. ~Lo WELL DEPTH PID ~ERVAL LI GIC DESCRIPTION DETAIL (ppm) a.OWCOUNT LOG ~ 10 --- o m 15 w ss 12 [] SM 15 SILTY SAND (SM): Yell Ixow~ to red brown, 30% si~ moist, -- 19B loose, tr mica, no odor, pooHy ~ted, mod dllatancy. 25 ~ 18 B SAND (SP): Reddish-brown, moderately dense, 0 25[] SP uneonsoltdsted, flnegralned, slightly moi~ no AEC WELLJBOR!NG LOG 1 of= P.O. BOX 4087E BAKERSREI~, CA ~ ,, PROJECT ChleoandtheManlGeneBolton LOCATION 231E. 18~hSlmet~ Bakerslleld, Califomla WELUBORINe NO.CB-1SURFACE ELEVATION WELLHEAD ELEVATION N/A .......... DATE DRIM.ED 3/21~96 LOGGED BY J- Dunwnody REVIEWED BY J, DUNWOODY DRILUNG COMPANY Melton ~ Coml~ny DRILLER Randy. Jm~..a METHOD HOLLOW STEM AUGER ..... BORE HOLE DIAMETER 8 INCH TOTAL DEPTH 50' DEPTH TO WATER: INITIAL NIA STATIC _ CASING TYPE DIAMETER SCHEDULE INTERVAL N~A . TO - _NJA_ .... SCREEN TYPE DIAMETER SLOT SIZE INq'ERVAL NIA TO ...... _NIA~ FILTER PACK TYPE INTERVAL N/A TO _N/A_ SURFACE SEAL TYPE INTERVAL. N/A .TO NIA NOTES DETAIL (ppm) LOG UT OGIC DESCRIPTION -'-- 35--'- 10 10 [] SP SAND(SP): Grey to white,flne to cse, poorly 18B srted, moderately dense, unconsolidated, -- 25 flnegrained, slightly moist, no apparent hydrocarbon odor. m 40 ~ 550 8 · ML SILT (ML): Tan-brown, moderately compact, stiff, clayey in ~ 45 m 350 18 · SM/ML SILTYSAND/SlLT(SM?ML): redbrown to yell lxn,50% sand, ----50w 0 19 ~ Sp SAND (SI=): Reddish-brovm, rnodefately dense, 31I unconsolidated, flnegmlned, slightly moist, no 38 apparent hydrocarbon odor. ,~Dv,,,VCEO E~RO~V/~E~r,~. CO~VCEPr~ WELL/BORING LOG 2 of 2 AEC P.o. 8oxy= ~'~s,E=. c,~ 9~4 PROJECT CHICO AND THE MAN LOCATION 231 East 18th Street, Bake~:l. California WEL[JBORING .O. CB- 1 Advanced Environmental ConCepts. Inc. 44~A~EROAD, 1208 · BAKERSFIELD. CA93313 8051~1-1~4~ · .'F~ 8051831-1771 S MC Laboratory, Inc. Analytical Chemistry Certificate ~1049 Client Name: Advanced Environmental Concepts, Inc. Address : 4400 Ashe Road, ~206 Bakersfield, CA 93313 Attention :Jon Buck Date samples collected: 3-21-96 Date analysis completed: 3-25-96 Date samples received : 3-22-96 Date of report : 3-25-96 Project Site: E. 18th Street Bakersfield Project Name: Chico & The Man RESULTS OF ANALYSIS: ~ 498 ID: CB-l-15' mG/kG DLR,mG/kG Benzene ND 0.005 Ethylbenzene ND 0.005 Toluene ND 0.005 Xylenes ND 0.005 TPH (Gasoline) 98 1.0 ~ 499 ID: CB-1-25' mG/kG DLR,mG/kG Benzene ND 0.005 Ethylbenzene ND 0.005 Toluene ND 0.005 Xylenes ND 0.005 TPH (Gasoline) ND 1.0 ~ 500 ID: CB-1-35' mG/kG DLR,mG/kG Benzene ND 0.005 Ethylbenzene ND 0.005 Toluene ND 0.005 Xylenes ND 0.005 TPH (Gasoline) ND 1.0 Matrix Type : Soil Method of Analysis for BTEX : EPA 8020 Method of Analysis for TPH (Gasoline) : EPA 8015M TPH : Total Petroleum Hydrocarbons DLR : Detection Limit for Reporting mG/kG : milligram per kilogram (ppm) ND : None Detected Stan Comer, ~c.M. Analytical Chemist 211 Aviation Street · ShafterAirport · Shafter, CA 93263 tec~% qo2-2qo7 ° FAX (805) 393-3623 Project Site: E. 18th Street Bakersfield Project Name: Chico & The Man RESULTS OF ANALYSIS: ~ 501 ID: CB-l-40' mG/kG DLR,mG/kG Benzene 24 0.005 Ethylbenzene 21 0.005 Toluene 120 0.005 Xylenes 120 0.005 TPH (Gasoline) 680 1.0 ~ 502 ID: CB-1-45' mG/kG DLR,mG/kG Benzene 4.2 0.005 Ethylbenzene 4.9 0.005 Toluene 23 0.005 Xylenes 31 0.005 TPH (Gasoline) 160 1.0 ~ 503 ID: CB-I-50' mG/kG DLR,mG/kG Benzene ND 0.005 Ethylbenzene ND 0.005 Toluene ND 0.005 Xylenes ND 0.005 TPH (Gasoline) ND 1.0 ~ c6~er,-Rd.M. Analytical Chemist CHAIN-OF-CUSTODY RECORD Client ~' Date LAB Project # Client PJoj~ '" ~j~ Addr~ . ORa,uis~,,:(S~ture) ~~~O ~eiv~ by: (SignOre) Dat?~Z¢ ~ Rain~is~ ~: (S~na~re) Dine 0 R~eiv~ by ~r~o~ (~Si~nature) Date I ~ADVANCED ENVIRONMENTAL CONCEPTS Cm~: ~me ~m~: Time