HomeMy WebLinkAboutMITIGATION (2)
~
II
I
II
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
II
(,~,
r:QJ
R~cydeu Pape.(
,- """!
~ EnecoTecli
ENVIRONMENTAL CONSULTANTS
'I
I
'I
'I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
Eneco Tech Southwest Inc.
373 Van Ness Avenue · Suite 110
Torrance, California 90501
(310) 618·9790' Fax (310) 618·9778
~ EnecoTecli
ENVIRONMENTAL CONSULTANTS
WORK PLAN FOR SOIL ASSESSMENT
705 SOUTH UNION AVENUE
BAKERSFIELD, CALIFORNIA
Prepared for:
KERN COUNTY SUPERINTENDENT OF SCHOOLS
1300 17th Street
Bakersfield, California 93301
For Submittal to:
CITY OF BAKERSFIELD FIRE DEPARTMENT
1715 Chester Avenue
Bakersfield, California 93301
Prepared by:
ENECOTECH SOUTHWEST, INC.
373 Van Ness Avenue, Suite 110
Torrance, California 90501
September 19, 1997
PROJECT NO.: 08-1365-002
{)
~~
. '~~~ G ç!1 >''''
1'%\." \l,tD ···.0/ (ì "-
/. -{") ';':::';-\ L ;:.:::,..: (;.' ~~
III. ":':'/' "\' . i)¡, .../1'.,'
.'>.., ,0 <.... v", "';or" \
tl '''<:' '."",v .",," \ 0
,l /}f~,~,., r."<:,, \~.~
~,!, ". '. '0 H\," ",.,..0 CJ \.... j
" . t"" ; 1 Ie: . "" ~
",,' \" 1.L:.t.L "'~ ~ J
~" ._~- jÏ
~" l:J,,· .
\\ ¡~.".."", ,~,~\s 1...~
~\~~~(;i,,~~Y:1~;J7
~~/
Kenneth L. Durand, RG, CHG, REA
Regional Manager
RtX)'c1cd Paper
.,
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
TABLE OF CONTENTS
Section
~
1.0 INTRODUCTION/BACKGROUND
1
2.0 OBJECTIVES
1
3.0 SCOPE OF WORK
1
4.0 SOIL SAMPLING PROTOCOL
4
5.0 ANALYTICAL PROCEDURES
6.0 REGIONAL GEOLOGIC/HYDROGEOLOGIC SETTING
6.1 Regional Physiographic Conditions
6.2 Geologic Conditions
6.3 Soil Conditions
6.4 Groundwater Conditions
4
4
4
5
5
5
7.0 REPORT/SCHEDULE
5
LIST OF FIGURES
Figure
Page
1 Site Location Map
2
2 Proposed Boring Locations
3
o
Recyckd Paper
~ EnecoTechQÐ
ENVIRONMENTAL CONSULTANTS
;>.~,,- 7>~: ,-"~'''''-; :"~..~.'.:""'. r·.··, . ',' '.'~ '.'< '.,,,.. ........ ,.~.. ': __. ~.... "~".,, ", '"r,.:7 -,' -~ ~ ;,:" (- '. .:' ".' _.' . _ .~,~,. . ~_ . ;V",;' ..".'
i,l
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
1.0 INTRODUCTION/BACKGROUND
EnecoTech Southwest. Inc. (EnecoTech) is pleased to provide this work plan to conduct
soil assessment activities at the Kern County superintendent of School, maintenance
yard located at 706 South Union Avenue. Bakersfield, California (Figure 1).
In August. 1997.. Three underground storage tanks. associated piping and dispensers
were removed. Soil samples collected adjacent to the dispensers indicated Diesel was
present at concentrations up to 19,000 mg/kg. In a phone conversation on August 12,
1997. the City of Bakersfield Fire Department requested that a work plan be submitted
to assess the extent this contamination. This work plan was therefor prepared by
EnecoTech to submit to the City of Bakersfield Fire Department, Hazardous Materials
Division.
2.0 OBJECTIVE
The objectives of the Soil Assessment are to assess the lateral and vertical extent of
soil impact in the area adjust to the dispenser.
3.0 SCOPE OF WORK
To accomplish the stated objective, EnecoTech proposes to drill and collect soil samples
from seven (7) soil borings to a depth of 30 feet below ground surface (bgs). The soil
samples will be selected for analysis based on the field observations and photoionization
detector (PID) readings for each sample. The proposed boring locations are subject to
the location of underground utilities.
The tentative locations of the soil borings are indicated in Figure 2. Drilling and
sampling activities will be conducted under the supeIVision of a California Registered
Geologist.
Each soil boring will be backfilled with bentonite chips or a bentonite grout mixture and
sealed at the top with concrete. Soil cuttings from drilling operations will be placed in
labeled Department of Transportation (DOT) approved 55-gallon drums and stored on
the site.
EnecoTech will notify Underground SeIVice Alert and the City of Bakersfield Fire
Department 48 hours prior to any field activities.
o
Recycled Paper
1
~ EnecoTech~
ENVIRONMENTAL CONSUL'TANTS
I
I I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
:~~~~~i~ NILES ST ~f"~--;'~"~, ~I:r~~~ ~:; i _·..·-·~rr\n~~:~(
1St~ IT LI~.~ ~ u'~',~ 0 :"'.'(~ M~ E; ~ " ~.. :; ! ~ --~ Sr t~~r'D ~¡~~~GE~~J >~~ ~
I - ...........1 -"--L \ ~ ~ ..~~ .. '1 E)' ·1Oi ··NILES ¡; '!!9N ., I ~ ~NI.. ,,,,,,'IEUI R ~,,~~... J;.
"'t_ ~ ~ Sf 24TH~",-ST~ 1 ~ t:'Ii'1Yct:! --..., 14t;, J", Jaq i I of,. '$ Z ..E .r Q HI JJ b '" .
1 , ~ oft -::::::;; S, "" - S.,. I, c,..._ Þ.t ~ ... ~ II."M ~
»ND I 0:; I c~ I' " ~-:O·~t~ '-;¡;;; ... IIIV( ...~ St f :-"\.- -" VISTA 1
; """I'" 21ST ", st "' ~I"'.. ..l.,"¡:' 1 ~ ÓtA I 0lt"!'oov ~ .. 04 s ~~ ~ ~
_ l"l c'N,".i.~ L ,... ~ ,J:~ -. :: !, .. ~:~!:b ..
lOT>! òo :"'f/;' :::': .. <T C.~ E r.::;;r;:~,~ rI el¡"..S ,.;:' -II; ~ :; 0. 'G ~ ."'./. <'".
_~.n:ru ... ..'..s--' h" 'S," '1::::--___ "'.. - _f""'_ ð __ 1.._ LUll'" .:-",~'.
':: ¡or" ~ c /1~H ~~ - ~ - -/~- IS,,, ~ ": ~ - - -"ÞT.! .....··..~...Þ -= 1 ¡.~'.t. oii!íIl :;; IN:,'" I~ ..n
, = I"·"~H IT / t- -J$IUCl E,81". ~ ~ -- 6S, /tit r I..f.tt & ST I
'" 0 '" J ,,_" ,J/, ~P'f H ~ r-,,-· ~--..:::.:;::::",. "" :
, " .. . ",,,r. TRU^TUN 5 . '" "'ITRUX'Tùi1f--. &.V'-.. " --=::; ;~<:::, .~ ~ ~ t; i .rNTUClCY I:
!IIJ .:.;. ~ 1Jn.~:1 ~,. '~[~g' f .J-.r ~:-!!!!~~IJ.:..~f--.L 5rj.1lit~ ~ 5, I'" \A ~ED~.JC~:-'- CENTER
AI.Ðf· r...::: ".". '1. .... Oot. b 'N_ /--..:. -. .. Y 11 ~ '-'-''e.ON~ c-"",'" 1~ "-..
l~ "-¡-;. Z !g .~¡-:t.l~~ ~ ~., &i)I-t! ~ ~..........'" A~j IJI!~ ......,II~~ t-~'(CU"I! 2'!..~
"J L or -t,~¡..u. ..l~o - f71~' ~.. - . . J; ff L J CrOTTOH:,," ......~:!!!. 11,~H!VI";.......~ T.U.!!1~ ~
_ 1,J 7· ST l'tIz ... .... '.-ilL ~ K ~ ; snr..'" ,- ROS'EC'\
" --,-- i::> J '1. -..J¡. ,¡ '::'';'.1: \~-=:;r-~ I
...;1 I CAUFORf\!¡A ,.... ," --- ., '"""f-.-.I ¿I P __. ~ 0 --,... -....
_ .1..:;; /. _~_!iV"':';-I -t .. -8 ~.. E·<~: Cþ;~FORNI~~~! ~~lAV ... ~ :;;.. II,: H[HLfY ~ F _+ .......~
-m.r- ,= UI ~I i III 0 z 'mft'"" ~.. :~~'¡,ª,.,~"T;f1-¡~7:: ~i<:f,"~ÿÍ~S 1 -0 111 vsr ~i1z ~~~~; ~ I"'> ~
10TH '\ ST i -jJ-9..L ~ 10TH . '" ~'~K._::.'/'~ ~~ ~~,"'O .~ "Iu... 1n<c'" 0 % A¥ ~.c '<.-
I ó I., '" Tilt' J C "f" 7: ....;.......-, z d ag c Cl."t~yo" V) \.UCI:V U.~ %¡ g.. = Z -E-l:S ...,.-;ÿ "'T > I
nt 0 I~ Sf ~ ¡I _; . ( 1 ~ tit :CI~ Ó ~ 51 >;3 z ~ "''1 u ~ 1
8TH ~ ~ !" ~-.:. rbTO~A . ~ AV < : ~f..!.3-L > ~ "".....AC V. ffi "V II
... , I ¡::....., ..., 4"'......... . ·GO..!Il.1.' ..I II;, ~ ·1> "il!' ó> ~ ~ .. ~ ~ ~
Ô'H I/) ~I t=IT I t 7TH Sf .;.....:.;.:..~,..::....< I...··:··;...,···:·; -~ DlWOl'f:J. 'I o..e >- ... E )-..,,: .. ¡¡; .D~ck VI
:; U C ".. I ·nt'/';·'·~"·:·"'~:'~<·:::;-:'.:A "ON Sf 'ST ~1:: J ::: il" I ' " . . > ~UD ~"
"" .0 "v) J ~~t '~).L.~i.·Y/.·.~..·~;.;:;.':"·.V) .I:';.~:~·:··::·:.·.. _.1_ H~S(fI kT ~ COLI ~ ~ ~ ~ r~~ ; È ~ ~ .. .., i
II ¡':;. \ ~~ . A- tit ~ ...:;:.,";:'!... "I.JNION. (EMITt".. MUflOOCIC 51 ~ ST .. I: . I~GNA AV " iii: J % 'A LA T U ~
j:"< 5TH ruv, ODGI st 5TH .~:.::'~:~r.::~:~,,:,:" . .'~:"~..,,:" -"',.-- I ã ~ ~AA«";'1 lit.! ~ .:
Q. i~~!L -Tt" 4TH -iI J¡" ST~'"::';·· .; .:.:;. VIRGINIA ~ '. AV - '''"' I
oa:sn. I'l * ., Ó ! ~v }... ..I'"'- 13:;; I ~ :1 :;; :;; ~ :it ~~~I f ~.. 1\-:;; = E r; J
,. H" -1 ~ ~, :II" '.D " lImA" ~ _:1 'HA" .. ~ ~ .:-;1 2 :z .. ~O.;!!. ~ ~ ~ I
.......1- - __-:;:: - / IMr" "z . a ~ ~.. '" - ~4'H\- - - - -g - - - + ~ - - - - - 1 g + ¡........-
. BANI: Sf vrsu: ~..,~/' I~ t :; ~ ¡:; i !lT~!: Ii ~ ~ ST L :S 1¡'tt',!'J~ 1 ~ ~ I : _ 1U4S ST .., I
~ . HS .;, -Ú!!o/~'/1 'r -, 0 ~ ~ WIt Z s I "AX ~ I 1[J1.1>.S r-- ~
ST;I ----.;~..Ils I ST ~ l' Ó ~ II~ '5 ~ ~ ~ ~ ~ ~.. I 1/£ N ~~. Sf I I~
It" ,.~Jd' ~.. I -11:-"'; ~II!" ~ ~ ¡; u:; It I\.4 - 4!.~. 12
,., s~ ft··., 1ST Sf IE .._".. -0-' _AINT' j"' Il I I <
~ .......----1 .."~,,,.. I r- P
~..._ -..J_ I I -3 ST ¡¡¡~~ -t n E __ BRUNDAGS -1 ms LN 0
'll o¡ ~:;¡.. )..!.~_~"::" WAT~~: of j /¥ Il .'" I TJOS L
58 r--:'--:- I I I ~
! E:€:Ii VOib"~"~ ~.~. SITE 1i ....~ .:;;-- ~ "I ST 0 1 ~ I Mt <;[/" I
~ =*-=1 U'"IIUI ... ~"~ ..,1 -.rt'l- -- ¡¡¡Ó~""8~L _å 1 -"ATWA. +-.:;~ ----,,.,;:¡;,;;;¡;¡;;-+---
jJ3u ~~ IR~ . !! 0 it Z W ~ ".Hrw CT 0 ~ I" ~ ~ ~ ~L 1 :~=" I
~[Yy ~~/\. li; ~i:~·,,-l~·r A-";: N i g .t.. ~I mHOH AV ~ ! II æ .. ~ ~~ ~ I ~ H::Œ:~" 1
c ~M1'" I ~.. 'ICA'!f!f .,.r.~Y:l ~ SMITHS' 0: ~ .. "I; ::=CI I
): 3.=~~'!::t~~;;'.:.:'i'(;: T~J ~: ~EL~~9 ~ I" ~IrER g ¡,.':~:', §-Y- ~. "'Ll~ no> J, ~~~::,,:
) [."., .'RN '.':0) .. 0 c" It:'-... ~IL .: 0 I I .
5 '..~Q.,¡'f{. ~o:·';:';;Þ·;':;,~J·~~i'."1T ,v:L Z ~ ~ ~Þ,~.. 51!::;·" ¡: I I ~ I
_ :.'\\ ~~~~R()1IN.: S:'; c-::;) 0" .:" i~", ' 0 I I r
~ "!.=::~, ~~..:'.~'':':':''~';..:.': WtJ"I"OS..J AY ~ s'" i 0" I'" \" .luï·;ï~"Wt u I I . _
~~~ !t:~r.{r~;;f¡;;~~~,~,;:~~;.~,::~ r&~:~! _ '..:~cHr=;::.. 'v: I! .t~t
1
l-
I
I
.. Reproduced with permission granted by THOMAS BROS. MAPS.
This mop is copyrighted by THOMAS BROS. MAPS. It is unlawful
to copy or reproduce 011 or any port thereof, whether for
personal use or resale, without permission"
Central Volley Thomas Guide
Page: 675 68
~EnecoTecli
ENVIRONMENTAL CONSULTANTS
Project: KERN SCHOOLS/UST REMOVAL
SITE LOCATION MAP
705 SOUTH UNION AVENUE
BAKERSFIELD, CA
n. No.:
ngure No.:
8/97
Approved By. DDV
RE:V.:
"'CAD rllo ND~ FIG'
DDV Ched<ed By.
08-01385-002
EM
Oro,", By.
DDV
..,.' '_:.'~"'-:."~.~:':-' __. 4 .....": .
I
FUEL LINE TRENCH
I
I
I
I
CANOPy ~
I
I
I DISPENSERS
I
I
I
I
I
I
I
L lARGE BUILDING
,---------------------,
DISPENSER
ISlANDS
x
x
I
I
I
I
I
I
t;j
I -.J~
I
0 7.5 15
,
SCALE IN FEET
CURB
\'x
x
o
Z
o
a..
z
o
¡:::
z
w
I
I
I
I
I
I
I
I Project:
I
I
LEGEND
o
.
2'= NO
6'= ND
2' - 3.0(GAS)
6'= 1.2(GAS)
DETECTED CONCENTRATION OF
DIESEL FUEL AT 2 AND 6 FEET
BELOW THE EQUIPMENT
ALL· DETECTIONS IN MILLIGRAMS PER KILOGRAM.
DETECTIONS ARE DIESEL UNLESS GAS IS
INDICATED IN PARENTHESIS.
TURBINE LOCATION
SOIL SAMPLE LOCATION
D1 IS A GASOLINE DISPENSER.
. D2, D3, & D4 ARE DIESEL DISPENSERS.
ET1, MT1, WT1
SOIL SAMPLE LOCATIONS FROIJ THE EAST
MIDDLE. AND WEST OF TANK 1 (T1)
x - PROPOSED BORING LOCATIONS
~EnecoTecli
ENVIRONMENTAL CONSULTANTS
KERN SCHOOLS/UST REMOVAL
SITE PLAN
705 SOUTH UNION AVENUE
BAKERSFIELD, CA
Fie No.:
08-01385-002
EM
ACAD rne No.:
KERNFIG2
Drown By.
DDV
rlgure No.:
2
DDV
Checked 8 Y.
Approved 8y.
8/97
DDV
REV.:
;,.. '.
I
II
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
4.0 SOIL SAMPLING PROTOCOL
The soil borings will be drilled using a Geoprobe rig operated by a C-57 licensed drilling
company. Probes will be steam-cleaned between borings to prevent cross-contamination.
Probe cleaning rinsate will be contained in 55-gallon DOT-approved drums.
The soil samples will be collected at 5-foot intervals from a depth of 5 feet to the total
depth of the boring. One brass tube from each sample location will be sealed with
teflon tape, capped, labeled, and stored in a chilled ice chest until delivered to the
analytical laboratory. Another portion of each recovered sample will be placed into zip-
lock plastic bags, sealed, and agitated for 15 to 60 seconds. A PID will theri be used
to measure and record organic vapor concentrations. The PID will be calibrated with
100 ppm isobutylene prior to beginning field work. All sampling equipment will be
washed before sampling in a Alconox (soap) solution and thoroughly rinsed. Based on
the results of the PID on each sample interval, a minimum of three soil samples from
each boring will be analyzed. The geologist in the field will use the remaining recovered
sample to describe the soil in accordance with the Unified Soil Classification System
(USCS). Additionally, a qualitative characterization of contamination will be made based
upon any petroleum hydrocarbon odors or soil discoloration. These observations and
USCS descriptions will be included in the Boring Logs, which will be reviewed by a
California Registered Geologist.
5.0 ANALYTICAL PROCEDURES
Each soil sample will be hand delivered to a on site State-certified hazardous waste
testing laboratory. Three to four samples from each soil boring will be analyzed for
Total Petroleum Hydrocarbons as diesel (TPHd) by the DHS-approved EPA Method
8015m; and BTEX using EPA Method 8020. The laboratory reports for soil sample
results will be included in the Site Assessment Report.
6.0 REGIONAL GEOLOGIC/HYDROGEOLOGIC SETTING
6.1 Regional Physiographic Conditions
The subject site is located in the southern San Joaquin Valley. This area is bound by
the southern portion of the Sierra Nevada Mountain Range to the east, the Transverse
Ranges and the Tehachapi Mountains to the south, and the southern portion of the
coast ranges to the west. The general topography of the Bakersfield region consists of
alluvial terraces, fans, benches, and floodplains sloping westward form the foothills of
the Southern Sierra Nevada Mountains to the main drainage axis of the San Joaquin
Valley. The Kern River, a perennial stream draining an extensive watershed in the
souther Sierras, flows in a general southwesterly direction through the center of the
metropolitan Bakersfield area. Temperatures in this region average 57° F in the winter
and 90° F in the summer months. Annual average precipitation ranges between 4 to
6 inches, with most rainfall occurring between the months of November and April.
6.2 Geologic Conditions
The San Joaquin Valley is a large basin lying between the Sierra Nevada range to the
east, and the coastal ranges to the west. This basin was formed in intermittent westerly
tilting of the underlying Mesozoic crystalline rocks, which elevated the Sierra Nevada
and depressed the western portion of the block. During Tertiary and Quaternary
periods, both marine and non-marine sediments were deposited on the basement rocks
as the western portion was depressed. The tertiary rocks consist of a series of stratified
sediments including sandstone, conglomerates, and shales that are relatively thin along
o
Recycled Paper
4
~ EnecoTechGÞ
ENVIRONMENTAL CONSULTANTS
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
the eastern margin and become increasingly thicker towards the southwest.
Tertiary sediments are generally overlain by Quaternary sediments of varying
thicknesses, including Pleistocene non-marine terraces and fans and Holocene fans and
alluvium. During the late Pliocene and early Pleistocene, the ancestral Kern River
deposited a hugh alluvial fan which spread for many miles in what is now Bakersfield.
Subsequent uplift of the Sierra Nevada raised the fan to its current elevation. Erosion
by the Kern River and its seasonal tributaries has produced the topography of the
region.
6.3 Soil Conditions
The soils in the general area of the site consist of alluvial fan deposits derived from the
Sierra Nevada uplands and transported by the Kern River. This alluvium generally
consists of unconsolidated, indistinctly bedded, conglomerate containing sand, silt, gravel
and boulders.
6.4 Groundwater Conditions
Local groundwater is generally found in shallow alluvial sediments of Holocene age.
normally in unconfmed aquifers. frequently becoming semi-confined with depth.
Beneficial uses of groundwater in the area include agriculture, municipal, and industrial
applications.
Groundwater in the area is usually more than 100 feet below ground surface.
7.0 REPORT/SCHEDULE
Field investigative work should require no more than two weeks to be completed. Upon
completion of the field work. EnecoTech will prepare a Site Assessment Report. which
will be submitted to the City of Bakersfield Fire Department within 45 days of
completion of field work. The report will detail the scope of work, the investigative
procedures, and the results of the investigation.
C:\FILES\JOBSAN\KERNS\ 1365002\ WKPLN.RPT
5
, . ~_;". ,Yo ....