HomeMy WebLinkAbout2900 UNION AVE_GROUNDWATER LETTER 3.26.07E2C Remediation
Environmental Engineering,
Consulting and Remediabon, Inc.
March 26, 2007
Mr. Nassri Jaber
2900 Union Avenue
Bakersfield, CA 93305
SUBJECT: First Quarter 2007 Groundwater Monitoring
and Remediation Status Reports
Minit Stop Market
2900 Union Avenue
Bakersfield, California
Dear Mr. Jaber:
E2C Remediation (E2C) is pleased to present this report to document the First Quarter 2007
groundwater monitoring activities for the Minit Stop Market located at 2900 Union Avenue (Site),
Bakersfield, California. In addition, this report documents the remediation status for the Site.
This report has been prepared by E2C for Mr. Nassri Jaber to document site conditions as
required by the State of California Regional Water Quality Control Board — Central Valley
Region, the Lead Regulatory Agency.
It is a pleasure to be of service, should you have any questions regarding this submittal, do not
hesitate to call either of the undersigned at 661 - 831 -6906.
Respectfully Submitted,
E2C Remediation
A�4
.1-07 - 8 p
William A. Lawson, P� . #71 ��A No. 7171
Director of Technical O eration rFoP CAO t' �-
cc: Mr. John Whiting, P.G.
Regional Water Quality Control Board — Central Valley Region
1685 E Street
Fresno, CA 93706
Mr. Howard H. Wines III, P.G.
Hazardous Materials Specialist
City of Bakersfield Fire Department, Office of Environmental Services
900 Truxton Avenue, Suite 210
Bakersfield, CA 93301
5300 Woodmere Drive, Suite 105, Bakersfield, CA 93313
tel 681.831.6906 fax 881.831.8234 www.e2cr.net
6L E2C Remediation
Environmental Engineering,
x Coneuldng and Remediation, Inc.
FIRST QUARTER 2007
GROUNDWATER MONITORING
AND
REMEDIATION STATUS REPORTS
MINIT STOP MARKET
2900 UNION AVENUE
BAKERSFIELD, CALIFORNIA
March 26, 2007
Project Number 1803BK26
Prepared For:
Mr. Nassri Jaber
2900 Union Avenue
Bakersfield, CA 93305
Prepared By:
E2C Remediation
Environmental /Engineering Consultants
5300 Woodmere Dr., Suite 105
Bakersfield, CA 93313
5300 Woodmere Drive, Suite 105, Bakersfield, CA 93313
tel 661. 831.6906 fax 661.831.6234 www.e2cr.net
Proiect Number 1803BK26 March 26, 200
TABLE OF CONTENTS
TABLE OF CONTENTS..
LIST OF FIGURES..........
LISTOF TABLES ......................................................:...................................... .............::................
ii
LIST OF APPENDICES .................................................................................... ...............................
ii
EXECUTIVESUMMARY ......................................................................:........... ..............w...............1
Summary of First Quarter 2007 Groundwater Monitoring ............................. ............ ::::..............1
Discussion of First Quarter 2007 Groundwater Monitoring Data ................... ..............................1
Summary of Remediation Status ................................................................... ..............................1
Conclusions................................................................................................... ............:.................2
Recommendations.......................................................................................... ............:::...............2
1.0 INTRODUCTION .................................................................................... ............:.................3
1.1 Site Description ................................................................................... ............::................3
1.2 Site Geology and Hydrology ............................................................... ............:..:..............3
1.2.1 Site Geology ................................................................................ ..............................3
1.2.2 Site Hydrogeology ....................................................................... ............:.................4
1.3 Summary of Site History ..................................................................... ..............................5
1.3.1 Site Assessment Status ............................................................... ............:.................6
2.0 FIRST QUARTER 2007 GROUNDWATER MONITORING .................. ..............................6
2.1 First Quarter 2007 Groundwater Monitoring. Activities ........................ ..............................6
2.1.1 First Quarter 2007 Groundwater Elevations ................................ ............:.................6
2.1.2 First Quarter 2007 Groundwater Sampling Procedures and Methods ......................7
2.1.3 First Quarter 2007 Groundwater Analytical Services .................. ............:.................7
2.1.4 Summary of First Quarter 2007 Groundwater Analytical Data .... ..............................7
2.1.5 Discussion of First Quarter 2007 Groundwater Analytical Data .. ..............................8
3.0 REMEDIATION STATUS REPORT ....................................................... ............:.................8
3.1 Ongoing System Operations ............................................................... ............:.................8
3.1.1 Thermal Oxidizer ......................................................................... ..............................8
3.1.2 Air Sparge Compressor .............................................................. .............................10
3.2 Compliance with SJVAPCD Permit To Operate ................................ .............................10
3.3 Fuel Hydrocarbon Mass Removal Rates ........................................... .............................10
3.4 Discussion of Remedial Efficiency ..................................................... .............::..............10
4.0 CONCLUSIONS .................................................................................... .............................11
5.0 RECOMMENDATIONS ......................................................................... .............................11
6.0 LIMITATIONS AND REPORT CERTIFICATION .................................. .............................12
E2C Remediation i
Proiect Number 1803BK26 ;March 26. 2007
LIST OF APPENDICES
Appendix A First Quarter 2007 Groundwater Purge Data Sheets
Appendix B First Quarter 2007 Groundwater Analytical Laboratory Report and Chain -of-
Custody
Appendix C GeoTracker Upload Reports
E2C Remediation ii
LIST OF FIGURES
Figure 1
Site Location Map
Figure 2
Site Plan
Figure 3
First Quarter 2007 Groundwater Gradient Plot
Figure 4
First Quarter 2007 Benzene Distribution Plot
Figure 5
First Quarter 2007 TPHg Distribution Plot
LIST OF TABLES
Table 1
Summary of First Quarter 2007 Groundwater Monitoring Data
Table 2
Summary of Historical Groundwater Elevation Data
Table 3
Summary of Historical Groundwater Analytical Data
Table 4
Summary of VE/GASS Monitoring Data
Table 5
Summary of Hydrocarbon Mass Removed
Table 6
Summary of Influent Vapor Analytical Data
Table 7
Summary of Effluent Vapor Analytical Data
LIST OF APPENDICES
Appendix A First Quarter 2007 Groundwater Purge Data Sheets
Appendix B First Quarter 2007 Groundwater Analytical Laboratory Report and Chain -of-
Custody
Appendix C GeoTracker Upload Reports
E2C Remediation ii
IProiect Number 1803BK26 March R6,2007
' EXECUTIVE SUMMARY
On January 16, 2007, E2C Remediation (E2C) conducted First Quarter 2007 groundwater
' monitoring and sampling at the Minit Stop' Market located at 2900 Union Avenue, Bakersfield,
California (Site) (see Figure 1). In addition, this report documents the remediation status for the
Site. This report has been prepared by E2C for Mr. Nassri Jaber to document site conditions as
required by the State of California Regional Water Quality Control Board — Central Valley
' Region, the Lead Regulatory Agency in ongoing directive letters, most recently dated December
21, 2006.
Summary of First Quarter 2007 Groundwater Monitoring
First Quarter 2007 groundwater monitoring was performed at the Site by E2C on January 16,
2007. Groundwater. elevations were measured and groundwater samples were collected from
' monitoring wells. Groundwater elevations at the Site decreased an average of 1.99 feet in the
First Quarter 2007, as compared to the Fourth Quarter 2006. In the First Quarter 2007,
groundwater flow beneath the Site was interpreted to be southeasterly at a gradient of 0.026 ft/ft.
' A summary of reported concentrations in groundwater samples follows:
■ Benzene was reported at two (2) wells, at concentrations of 5.5 micrograms per Liter
'
(4g/L) at MW -1 and 18 µg/l_ at MW -3 (18 l g/L in duplicate);
■ TPHg was reported at two (2) wells, at concentrations of 6,300 µg/l_ at MW -1 and 44,000
µg /L at MW -3 (44,000 µg/L in duplicate);
' ■ Toluene was reported at two (2) wells, at concentrations of 2.8 µg/l_ at MW -1 and 320
4g /L at MW -3 (320 µg /L in duplicate);
' ■ Ethylbenzene was reported at two (2) wells, at concentrations of 2.8 µg /L at MW -1 and
250 4g/L at MW -3 (250 µg /L in duplicate);
■ Xylenes were reported at two (2) wells, at concentrations of 12 µg/L at MW -1 and 1,500
' 4g/L at MW -3 (1,500 4g/L in duplicate); and
■ MtBE, TBA, DIPE, EtBE, TAME, 1,2 -DCA and EDB were reported as non - detect.
Discussion of First Quarter 2007 Groundwater Monitoring Data
Based on the groundwater analytical data from the First Quarter 2007, it appears that,cycling off
the remedial system will enhance the cost effective completion of remedial efforts at the Site.
The analytical data from the First Quarter 2007 indicates that concentrations of fuel
hydrocarbons in groundwater have rebounded at MW -1 and MW -3, and that influent
concentrations may be relatively high for a.short period upomsystem restart. Note: 1,,2 -DCA and
EDB have been reported as non - detect in groundwater at the since December 2004. MtBE has
been reported as non - detect in groundwater at the Site since August 2005.
Summary of Remediation Status
Prior to shutdown on August 2, 2006 the previous two (2) months of operational lab data
indicated influent concentrations that averaged approximately 500 ppmv, with a flow of
approximately 175 SCFM, for a removal rate of 24 to 33 Ibs /day (approximately 850'Ibs /month).
Cycling data indicated that following periods of shutdown, influent concentrations were lower
than pre- shutdown levels. On the occasions that concentrations were elevated on restart, they
quickly declined. The utility costs (electricity and natural gas) necessary to operate the current
system average $6,000.00 /month, which equates to approximately $38.00 /gallon.
E2C Pemediation
Proiect Number 1803BK26 March 26 2007
Note: E2C contacted PG &E on two occasions to determine if the excessive costs were due to a
leak or to a billing problem, and PG &E reported no problems with the meter readings, and there
were no leaks. E2C confirmed that no leaks were causing the excessive operational costs.
On August 2, 2006, the remedial system was cycled off to allow for contaminant rebound. The
influent vapor concentrations are too low to warrant the operational expense of a
thermal /catalytic (TCAT) oxidizer. In addition, the concentrations are at the low end of the range
needed for efficient use of an electric/catalytic (ECAT) oxidizer. The time and expense
necessary to meet the permitting requirements for the ECAT would not be justified by'the limited
ECAT run time expected to reduce influent vapor concentrations before modification of the
remedial system to a granulated activated carbon (GAC) absorption system. Therefore,
although frequent carbon change -outs may be required initially, a GAC remedial system would
be substantially more cost effective than operation of either the TCAT or the ECAT.
Conclusions
Based on the site assessment work, groundwater monitoring data and remedial operational data
obtained at the Site to date, E2C concludes the following:
• The average groundwater elevations beneath the Site decreased an average of 1.99 feet
in the First Quarter 2007, and the groundwater flow direction was southeasterly. Note:
Groundwater flow direction and gradient is likely influenced by recharge from the unlined
canal located just west of the Site;
• Remedial operations (using the VE/GASS) at the Site have been highly effective in
removing fuel hydrocarbons from the subsurface and in controlling migration of the
groundwater fuel hydrocarbon plume;
• Groundwater samples collected from MW -5, the downgradient monitoring well, have
been non - detect for the COCs for five (5) consecutive quarters, and prior to that, only
occasional low concentrations of COCs were reported;
■ MtBE has not been reported since the August 24, 2005 sampling event;
' ■ Fuel hydrocarbon concentrations (BTEX and TPHg) in groundwater have shown
significant reductions across the Site since startup of the remediation system;
■ Fuel hydrocarbon mass removed, as of August 2, 2006, has been calculated as
approximately 176,152 Ibs, or approximately 27,523 gallons; and
■ Remedial system influent concentration averages indicated that the thermal /catalytic
' oxidizer unit may have reached the limit of its effectiveness for continual operations
mode, and that the time and costs. necessary to modify the remedial system to an
electric /catalytic oxidizer are prohibitive.
' Recommendations
E2C makes the following recommendations based on the above conclusions and the data
presented in this report:
' ■ Continue to monitor and sample groundwater at the Site on a quarterly basis;
■ Analyze groundwater samples for BTEX, MtBE, TBA; DIPE, ETBE and TAME using EPA
' Method 8260B, and for TPHg using EPA Method 8015M;
■ Discontinue analysis for 1,2 DCA and EDB;
■ Prepare a Workplan Jo modify the remedial system a granular activated carbon
' absorption system. This would require a modification to the Permit To Operate; and
■ Continue to submit groundwater monitoring reports and remediation status reports to the
Client, the RWQCB and the BFD on a quarterly basis.
E2C Remediation 2
Proiect Number 1803BK26 March 26, 2007
1.0 INTRODUCTION
On January 16, 2007, E2C Remediation (E2C) conducted First Quarter 2007 groundwater
monitoring and sampling at the Minit Stop Market located at 2900 Union Avenue, Bakersfield,
California (Site) (see Figure 1). In addition, this report documents the remediation status for the
Site. This report has been prepared by E2C for Mr. Nassri Jaber to document site conditions as
required by the State of California Regional Water Quality Control Board — Central Valley
Region, the Lead Regulatory Agency in ongoing directive letters, most recently dated December
21, 2006.
1.1 Site Description
The Site is a Texaco gasoline station and convenience store ( Minit Stop Market) ilocated in
Bakersfield, California, at 2900 Union Avenue, on the northeast corner of Union Avenue and
Pacific Street (see Figure 1 for -Site Location Map). The Site is located within the southwestern
quarter of the southwestern quarter of Section 20, Township 29 South, Range 28 East, and
MDBM. The Site is at an elevation of approximately 428 feet above Mean Sea Level (msl) and
the topography is relatively flat with a slight slope to the southwest.
The Minit Stop facility consists of a convenience store and a canopy- covered fueling area
consisting of one fueling island located west of the building. The lot covers an area of
approximately 14,950 square feet with one (1) structure of approximately 2,000 square feet in the
east center of the parcel. Formerly located at the Site were three (3) 10,000 — gallon gasoline
USTs, and four (4) multiple product dispensers-(MPDs) on a single dispenser island (also, two
5,000 - gallon gasoline USTs were abandoned in place). The former USTs were located to the
north and east of the present fueling area. Currently present at the Site are a 20;000- gallon,
doubled- walled, split- chambered UST and two (2) dual -sided MPDs on a single dispenser island,
with the 15,000 - gallon chamber used to store regular unleaded gasoline and the 5,000— gallon
chamber used to store premium - unleaded gasoline.
The surrounding area consists of mixed industrial, commercial and residential uses along Union
Avenue. The sites directly adjacent to the subject property are described below:
• North: Located adjacent to the subject site is a service shop (Air- Draulics Sales and
Service);
• South: Pacific Street bounds the Site to the South and beyond is a general contractor
(Silver AC & Heating);
• East: An alley bounds the Site to the East and beyond is a single - family residence; and
• West: Union Avenue bounds the Site to the West and beyond are a canal and a storage
warehouse (Kern Ice & Cold Storage Co.).
1.2 Site Geology and Hydrology
1.2.1 Site Geology
The property is located in the south central area of the San Joaquin Valley where the Sierra
Nevada, Great Valley, and Coastal Range physiographic provinces meet. The southern end of
the Sierra Nevada Province is composed of a massive block of igneous and metamorphic rock of
Mesozoic age and older. This Sierran block, 40 to 100 miles wide and 400 miles long, slopes
five to seven degrees beneath the San Joaquin Valley. The Coastal Range province on the west
consists of tectonically deformed and fractured marine and non - marine sedimentary rocks of
Jurassic, Cretaceous, and Tertiary age, which dip eastward beneath the San Joaquin Valley.
E2C Remediation
Proiect Number 1803BK26 March 26 2007
The Great Valley province is a broad asymmetrical synclinal trough, which is known as the
Sacramento Valley in the north and the San Joaquin Valley in the south. Beneath the southern
San Joaquin Valley floor, the Sierran plutonic and metamorphic rock block is overlain by
consolidated marine rocks of Jurassic and Cretaceous age. These rocks are overlain by
continental marine and non - marine sedimentary rocks of Tertiary age, which are comprised of
continental deposits of consolidated to semi - consolidated, fossiliferous sandstone, siltstone, and
shale which thicken toward the south and west. The Tertiary rocks in turn, are overlain by
unconsolidated continental deposits, which consist of Pliocene to Holocene river and lake
sediments of gravel, sand, silt, and clay.
Surface features of the floor of the San Joaquin Valley consist of dissected uplands, alluvial fans,
overflow areas, and lake bottoms. Dissected uplands lie between the mountains and the nearly
flat Valley floor and are manifest in low -lying hills through which perennial and intermittent
streams flow. These features consist of reworked older alluvium. The alluvial fans are the sites
of active stream deposition of sands and silts derived from the Sierra Nevada and the dissected
uplands. The overflow lands and lake bottoms lie in the central part of the Valley where silt and
clay accumulate in quiet lake and marsh environments.
The Site lies in.the northeast portion of the City of Bakersfield on a geomorphological feature
loosely termed "the Panorama Bluffs ". The Panorama Bluffs achieve an elevation of
approximately 900 feet mean sea level (MSL) and slope to the south-southwest.. The Panorama
Bluffs are a slightly tilted (uplifted) erosional remnant of the deposition along the Kern River. The
Kern River is located just north of the Bluffs at its base. The depositional environment of the
bluffs is alternating between high- energy deposition (gravel, cobbles, and boulders) and low -
energy deposition (silts and clays in overbank deposits).
The subsurface beneath the Site is characterized by interbedded silt, clayey silt, silty to clayey
sand, and sand with gravel and clay lenses. Beneath the Site, dense layers of gravel to cobbles
of weathered granite exist between depths of approximately 50 feet and 75 feet below ground
surface (bgs). Off the Site, in the downgradient direction at the location of MW -5, dense layers
of gravels to cobbles of weathered granite exist between 30 feet and 75 feet, and between 90
feet and 105 feet bgs, with a layer of fine to medium grain size sand (SP) between them.
0 1.2.2 Site Hydrogeology
A broad, thick hydrogeologic unit consisting of soil and rock with varying porosity and
' permeability underlies the Central Valley of California. Physical dimensions are approximately
50 miles wide at the widest point in the Valley, 400 miles long, and as much as 2,000 feet deep.
Recharge to regional aquifers consists of infiltration of seasonal precipitation and percolation of
' surface waters. The Valley aquifer of greatest storage, highest quality, and greatest accessibility
for domestic and agricultural use consists of the alluvial and lacustrine continental deposits
extending to the depths of 1,500 to 2,000 feet beneath the San Joaquin Valley floor.
. Lithologic and hydraulic properties of these sediments are largely the product of the sediment
source and the depositional environment. The sediments range in size from clays to boulders
and include all mixtures between the extremes. Western sediments are derived largely from the
' Coastal Ranges, and tend to consist of shales and fine sandstones with limited permeability.
Eastern sediments are derived mainly from granitic materials of the Sierra Nevada, and are
generally coarser and much more permeable. Sediments encountered during the borings at the
' Minit Stop site consisted of alluvial and fluvial deposits of interbedded silt, clayey silt, silty to
clayey sand, and sand with gravel and clay lenses. Dense layers of permeable, weathered
granite gravel and cobbles exist between depths of approximately 50 feet and 75 feet 'bgs.
E2C Remediation 4
IProiect Number 1803BK26 March 26 2007
' Regionally, the depth to groundwater ranges between 200 and 220 feet below grade, according
to the 1996 Water Supply Report published by the Kern County Water Agency in July 2000.
During February 2002 drilling activities, first encountered groundwater was found at a depth of
' approximately 120 feet bgs. During January 2003 drilling activities, first groundwater was also
encountered at a depth of approximately 120 feet. During July 2003 drilling activities, first
groundwater was also encountered at a depth of approximately 119 feet bgs. See Table 3 for a
' summary of historical groundwater elevations.
1.3 Summary of Site History
' On March 18, 1999, the City of Bakersfield Fire Department (BFD) (lead agency for the Site)
issued a temporary closure permit for the Site. The underground storage tank upgrades had not
been completed and temporary closure was in effect as of that date. In March 2000 a Phase I
Environmental Site Assessment was performed.
In May 2000, three (3) 10,000- gallon USTs', and four (4) multiple product dispensers i(MPDs) on
' a single dispenser island and associated product piping were removed as follows.
■ Tank #1 — 10,000 - Gallon Gasoline (Removed - May 9, 2000)
■ Tank #2 — 10,000 - Gallon Gasoline (Removed - May 9, 2000)
■ Tank #3 — 10,000 - Gallon Gasoline (Removed - May 9, 2000)
Upon removal of the above tanks, two (2) additional 5,000- gallon USTs were discovered to the
east of the three 10,000 - gallon USTs. The two (2) 5,000 - gallon USTs were abandoned in place
in accordance with KCEHD guidelines and KCEHD permitting.
• Tank #4 — 5,000 - Gallon Gasoline (Abandoned in place)
• Tank #5 — 5,000 - Gallon Gasoline (Abandoned in place)
At the time of tank removal, soil samples were collected from beneath the inverts at each end of
the USTs. Soil samples were also collected beneath each MPD. Three (3) hand -auger soil
borings (TK -4W, TK -5W, and TK -5E) were also slant - drilled beneath .the inverts of the two (2)
5,000 - gallon newly discovered USTs, with soil samples collected at depths of 12 and 16 feet bgs
in each boring.
Elevated adsorbed -phase TPH as gasoline (TPHg) and benzene, toluene, ethyl benzene and
total xylenes (BTEX) concentrations were reported in soil samples at location TK -3E at depths of
14 and 18 feet bgs beneath the eastern end of the southern 10,000 - gallon gasoline UST, and in
soil sample TK -4W -16 collected at a depth of 16 feet bgs beneath the western 'end of the
western 5,000 - gallon USTs. The maximum concentrations for TPHg and BTEX were reported at
location TK -5E at the eastern 5,000 - gallon UST. Trace benzene and methyl tertiary=butyl ether
(MtBE) concentrations were reported in soil sample TK -3E -14 collected at a depth of 14 feet bgs
beneath the eastern end of the southern 1.0,000- gallon UST, but were reported as non- detect at
the 18 -foot depth at that same location. TPHg, BTEX, and MtBE were reported as non- detect in
the remaining twenty -three (23) soil samples analyzed.
The fueling facilities were subsequently upgraded with a 20,000 - gallon double - walled, split
chamber UST and two dual -sided MPDs on a single dispenser island.
E2C Remediation 5
Proiect Number 1803BK26 March 26 2007
1.3.1 Site Assessment Status
Groundwater Monitorinci Wells
To date, five (5) groundwater monitoring wells have been installed, four (4) onsite (MW -1
through MW -4) and one (1) offsite (MW -5). See Figure 2 for the monitoring well locations.
Vapor Extraction and Air Sparge Wells
Three (3) double - completion (two separate screen intervals, shallow and deep) vapor extraction
(VE) wells and one (1) deep completion VE well have been installed at the Site. Four (4)
groundwater air sparge (AS) wells have also been installed.
Vapor Extraction Pilot Test Conclusions
A VE Pilot Test was conducted .in March 2003. The site stratigraphy and lack of resistance to
flow (0.4- to 1.45- inch H2O at different wells) suggested that this site was an ideal candidate for
vapor extraction. The extremely high removal rates documented also suggested that this site
had a significant soil and groundwater on -site source (i.e., area requiring remediation). It was
calculated that the radius of influence for a full -scale remediation would be at a minimum 55 feet,
and could exceed 70 feet. It was found that the use of well VE -3S tended to dilute the influent
vapor stream and should only be used during the initial stages of remediation. Use of VE -1S and
VE-1D yielded the highest influent concentrations; thus the focus of remediation would be at
these two (2) wells after 100% of the well field became utilized. Note: VE-1S and VE-1D are
located in the highest source area of soil and groundwater impaction. Therefore these wells
would yield the highest removal rates. It was estimated that hydrocarbon removal rates initially
could be greater than 1,000 Ibs /day, with a subsequent decrease as remedial operations
progressed.
Surrounding Area Well Survey
Research of the surrounding area identified six (6) water supply wells and two (2) surface water
bodies within a 2,500 -foot radius of the Site.
2.0 FIRST QUARTER 2007 GROUNDWATER MONITORING
Details on the First Quarter 2007 groundwater monitoring and sampling event are presented in
Section 2.1.
2:1 First Quarter 2007 Groundwater Monitoring Activities
E2C conducted First Quarter 2007 groundwater monitoring and sampling activities on January
16, 2007.
2.1.1 First Quarter 2007 Groundwater Elevations
Each well (MW -1 through MW -5) was evaluated, using a clear bailer, for the presence of free -
product, and none was identified. The depth to groundwater was then measured at each well,
groundwater was purged, and groundwater samples were collected.
The depth of freestanding groundwater was measured to the nearest one - hundredth (0.01) of a
foot, using a Solinst water level indicator. Measurements were made at the north side of the top
of casing. The Solinst water level indicator, and attached measuring tape, were washed in
Alconox solution and were then double rinsed in clean potable water prior to use at each well.
' Groundwater elevations at the Site decreased an average of 1.99 feet in the First Quarter 2007,
as compared to the Fourth Quarter 2006. First Quarter 2007 groundwater elevation data are
summarized in Table 1, and are presented with historical groundwater elevation data lin Table 2.
E2C Remediation 6
Proiect Number 1603BK26 March 26 2007
For the First Quarter 2007, groundwater flow beneath the Site was interpreted to be
southeasterly at a gradient of 0.026 ft/ft. The groundwater flow direction is consistent with
historic flow directions. See Figure 3 for the First Quarter 2007 groundwater elevation contour
and gradient plot. Groundwater flow and gradient beneath the Site may be influenced by
recharge from the nearby canal. The canal is unlined and parallels Union Avenue along its west
side. Stream flow in the canal is southerly.
-2.1.2 First Quarter 2007 Groundwater Sampling Procedures and Methods
Groundwater at all monitoring wells was purged using a battery- operated pump or a hand bailer.
At least 3 casing volumes of groundwater was removed from each well prior to.sampling. Casing
volume is calculated by multiplying the height of the freestanding water column in the well by the
cross - sectional area of the well casing. The temperature, pH and conductivity of the water were
measured. periodically as water was pumped from the wells to ensure sufficient'. purging, as
indicated by stable measurements on field instruments. At each well, when measurements from
the field instruments stabilized to within 10% of the previous measurement during purging,
groundwater in the well was considered representative of the aquifer, and E2C ,personnel
conducted groundwater - sampling activities. A purge data sheet for each well is included in
Appendix A.
Each groundwater sample was collected using a new disposable bailer. Liquid in the bailer was
decanted into two 40- milliliter volatile organic analysis (VOA) vials. Each sample container was
sealed using a tight fitting Teflon -lined screw cap. Care was taken so that no. headspace or
bubbles existed after sealing each VOA with the cap. All samples were labeled and documented
on a chain of custody record immediately after sealing. After the documentation was complete,
the samples were placed into an iced cooler maintained at 4° Centigrade for transport to the
analytical laboratory.
All downhole equipment was cleaned prior to use by washing with an Alconox solution and a
double rinse with clean potable water.
2.1.3 First Quarter 2007 Groundwater Analytical Services
Groundwater samples were transported. under Chain -of- Custody and -were analyzed at ProVera
Analytical Laboratories, Inc. (ProVera) (California State - Certified analytical laboratory #2606) in
accordance with State guidelines and EPA protocols. The samples were analyzed for the
following fuel hydrocarbons using the appropriate EPA Method: BTEX and five fuel oxygenates
(including MtBE), 1,2 DCA and EDB, using EPA Method 8260b; and TPHg using EPA Method
8015M. The reporting limits for BTEX and the fuel oxygenates were 0:5 µg/L (TBA at 2.5 µg/L)
and 50 µg/l_ for TPHg.
2.1.4 Summary of First Quarter 2007 Groundwater Analytical Data
A summary of reported concentrations in groundwater samples follows:
'
• Benzene was reported at two (2) wells, at concentrations of 5.5 micrograms per Liter
(µg/L) at MW -1 and 18 µg/l_ at MW -3 (18 µg/l_ in* duplicate);
• TPHg was reported at two (2) wells, at concentrations of 6,300 µg/l_ at MW -1 -and 44,000
' µg /L at MW -3 (44,000 µg/l_ in duplicate);
• Toluene was reported at two (2) wells, at concentrations of 2.8 µg/l_ at MW =1 and 320
'
µg/l_ at MW -3 (320 µg/l_ in duplicate);
■_ Ethylbenzene was reported at two (2) wells, at concentrations of 2.8 µg/l_ at !MW -1 and
250 µg/l_ at MW -3 (250 µg/l_ in duplicate);
E2C Remediation i
Proiect Number 1803BK26 'March 26. 2007
• Xylenes were reported at two (2) wells, at concentrations of 12 µg/l_ at MW-_1 -and 1,500
-µg /L at MW -3 (1,500 µg/l_ in duplicate); and.
• MtBE, TBA, DIPE, EtBE, TAME, 1,2 -DCA and EDB were reported as non - detect.
2.1.5 Discussion of First Quarter 2007- Groundwater Analytical Data
Based on the groundwater analytical data-from the First Quarter 2007, it appears that cycling off
the remedial system will enhance the cost effective completion of remedial efforts at the Site.
The analytical data from the First Quarter 2007 indicates that concentrations of fuel
hydrocarbons in groundwater have rebounded at MW -1 and -MW-3, and that influent
concentrations may be relatively high for a short period upon system restart. Refer to Table 3 for
a Summary of Historical Groundwater Analytical Data.
Note: 1,2 -DCA and EDB have been reported as non - detect in groundwater at the `Site since
December 2004. MtBE has been reported as non - detect in groundwater at the Site since August
2005.
3.0 REMEDIATION STATUS REPORT
All remediation wells [(three (3) multiple - completion VE wells (VE- 1D /1S, VE- 2D /2S, and
VE- 3D /3S)], one (1) deep completion VE well (VE -4), and four (4) air sparge wells are trenched
and plumbed to an onsite equipment compound. See Figure 2, Site Plan, for the location of the
AS wells, VE wells and the onsite remediation equipment compound. In September 2003, the
SJVAPCD issued the Permit to Operate (PTO) for the remedial equipment. On April 29, 2004,
after the installation gas and electrical services by PG &E, the remediation system (utilizing a
Baker Furnace 250 -CFM Thermal Oxidizer), was brought on line.
Note: In a 7 -Day Notice to Abate, dated May 19, 2005, the City of Bakersfield notified Minit Stop
of a noise violation due to the operation of the remediation equipment. On May 23, 2005 E2C
personnel performed a site visit and shut down the remediation system in order to comply with
the City Bakersfield abatement notice. On July 25, 2005, E2C personnel replaced the air
compressor and insulated the blower housing. The modifications to reduce the noise level were
approved by a City of Bakersfield Inspector the same day, and the system was restarted.
3.1 Ongoing System Operations
3. 1.1 Thermal Oxidizer
For site remediation, E2C utilizes a Baker Furnace 250 -CFM thermal oxidizer, which is designed
to be modified in the field for use with a modular catalytic cell when fuel hydrocarbon
concentrations decline and stabilize at or below 2,000 ppmV. The unit's minimum operating
temperature in thermal mode was 1,400 deg. F, and its minimum operating temperature in
catalytic mode is 600 deg. F (currently the oxidizer is operating in thermallcatalytic mode).
These temperatures are set to ensure cost effective vapor oxidation. The unit is equipped with a
positive displacement (PD) vapor extraction blower. For improved reliability and safety, the
valve controls, actuators, and components are controlled by. a relay logic. The unit is equipped
with a water knockout pot, automatic air dilution, a noise - reducing muffler, and a blower sound
reducing enclosure. This equipment is.designed to shut down and lock out in the event of a
system malfunction. The various safety features include sensors to detect high and low oxidizer
bed temperatures, high and low blower pressure, high intake LEL, high and low air pressure,
high and low exhaust temperature, and water knockout malfunction. The manufacturer's
specifications for this remediation unit indicate that this unit has 99% (minimum) destruction
efficiency.
Remediation
Proiect Number 1803BK26 March 26, 2007
The remediation equipment is typically monitored on a weekly basis to perform routine
maintenance, to record oxidizer parameters (temperature, flow rate and operating hours), to
measure and document influent and effluent hydrocarbon concentrations and to optimize the
wellfield. Although the oxidizer parameters are continuously recorded digitally on a Zip disk,
weekly monitoring of these parameters verifies continued accuracy of the measuring devices.
Hydrocarbon concentrations are measured with a portable hydrogen flame ionization detector
(FID) and the data is used in applicable formulas to calculate hydrocarbon mass removal rates
(on both a monthly and on a cumulative basis). Adjustments are continually made to the
configuration of the unit to maximize vapor flow from the wellfield, while maintaining the chamber
temperature above 1,400 degrees Fahrenheit ( °F) (as required in the SJVAPCD ,permit) and
keeping the chamber temperature below the manufacturer's recommended temperature limit of
1,850 OF in the stack. The wellfield is optimized on a weekly basis (i.e., control valves are
opened and closed to achieve the highest influent concentration possible).
Due to declining influent concentrations, E2C instituted a cycling program to promote fuel
hydrocarbon rebound, which resulted in improved efficiency in removal costs. E2C cycled the
thermal unit off for the periods of October 31, 2005 through November 11, 2005 and November
28 through December 12, 2005. E2C continued to enhance rebound by cycling the'thermal off
from February 7, 2006 through March 6, 2006. In early March 2006,. due to continued low
influent concentrations that did not justify the cost - effective use of a thermal unit, E2C notified. the
SJVAPCD of the intention to convert the thermal unit to a thermal /catalytic unit. During the
remainder of March, and through most of April 2006, the thermal unit was cycled off and
modified for thermal /catalytic operation. Thermal/catalytic operations commenced on April 20,
2006. On August 2, 2006, due to continued low influent concentrations to the thermal /catalytic
unit, E2C cycled the remedial system off to allow for fuel hydrocarbon rebound.
Prior to shutdown on August 2, 2006 the previous two (2) months of operational lab data
indicated influent concentrations that averaged approximately 500 pprnv, with a flow of
approximately 175 SCFM, for a removal rate of 24 to 33 Ibs /day (approximately 850 Ibs /month).
Cycling data indicated that following periods of shutdown, influent concentrations were lower
than pre- shutdown levels. On the occasions that concentrations were elevated on restart, they
quickly declined. The utility costs (electricity and natural gas) necessary to operate the current
system average $6,000.00 /month, which equates to approximately $38.00 /gallon.
Note: E2C contacted PG &E on two occasions to determine if the excessive costs were due to a
' leak or to a billing problem, and PG &E reported no problems with the meter readings, and there
were no leaks. E2C confirmed that no leaks were causing the excessive operational costs.
I On August 2, 2006, the remedial system was cycled off to allow for contaminant rebound. The
influent vapor concentrations are too low to warrant the operational expense "of a
thermal/catalytic (TCAT) oxidizer. In addition, the concentrations are at the low end of the range
' needed for efficient use of an electric /catalytic (ECAT) oxidizer. The time and expense
necessary to meet the permitting requirements for the ECAT would not be justified by the limited
ECAT run time expected to reduce influent_ vapor concentrations before modification of the
remedial system to a granulated activated carbon (GAC) absorption system. Therefore,
ialthough frequent carbon change -outs may be required initially, a GAC remedial system would
be substantially more cost effective than operation of either the TCAT or the ECAT.
E2C Remediation 9
1
Project Number 1603BK26 March 26, 2007
3.1.2 Air Sparge Compressor
Groundwater air sparging is conducted via an Ingersol -Rand 10 -hp air compressor.. Needle
valve flow controllers, which are set in an air sparge manifold at the equipment compound,
control the airflow to the microporous sparge points set at the bottom of the AS wells. Flow of.air
is optimized during each weekly site visit so that the maximum air pressure available is
introduced evenly to all AS wells and into the groundwater.
3.2 Compliance with SJVAPCD Permit To Operate
Ongoing San Joaquin Valley Air Pollution Control District (SJVAPCD) Permit To Operate (PTO)
compliance is demonstrated during regular Site visits by measuring the VOC concentrations in
the influent and effluent streams using a PID or FID and collection and chemical analyses of
Tedlar0 bag samples. Based on Tedlar0 bag data from January 2005 until August 2006, the
system destruction has averaged 99.99% (see Tables 6 and 7 for summaries of Tedlar@ bag
influent and effluent laboratory data), which meets PTO conditions.
Field records, including sampling results, cumulative runtime, flow rate and catalytic oxidizer
temperature, will be maintained and retained for a minimum of two (2) years. System operation
temperature was maintained at a minimum of 1,400 degrees Fahrenheit ( °F) in the combustion
chamber of the thermal oxidizer through March 7, 2006.
On March 7, 2006, E2C, submitted a Vapor Extraction System Modification Notification (PTO #
' S- 4205 -1 -0) to the SJVAPCD. E2C notified the SJVUAPCD that the Baker Furnace Thermal
Oxidizer unit would be modified to operate in thermal /catalytic mode due to decreasing influent
concentrations at the site. The unit incorporates a catalytic cell and the minimum operating
I' temperature for the combustion chamber of the thermal /catalytic oxidizer will be maintained at or
above 600 degrees Fahrenheit. On April 20, 2006, thermal /catalytic operations commenced.
' 3.3. Fuel Hydrocarbon Mass Removal Rates
Hydrocarbon removal rates can be calculated using two (2) methods to evaluate influent
concentrations, flow rates and run time. Influent concentrations from the initial startup, April 29,
' 2004, through January 24, 2005 are based on influent concentrations from field instrument data.
Influent concentrations, beginning January 31, 2006, are based on Tedlar® bag data.
' The first method to calculate mass removal rates uses a straight -line extrapolation of influent
measurements based on actual hourly run -time. Based on this method, the mass of fuel
hydrocarbons removed from startup through August 2, 2006 can be calculated at approximately
171,315 Ibs (see Table 4A). The second method to calculate mass removal uses the average
' influent concentrations over the average daily run -time per. month. Based on this method, the
total mass of fuel hydrocarbons removed from startup through the August 2, 2006 can be
calculated at approximately 180,990 Ibs (see Table 5). The average of the above two (2)
' methods (176,152 Ibs) provides a conservative estimate of the total mass removed.
3.4 Discussion of Remedial Efficiency
' VE/GASS operational data indicate that influent concentrations to the system have declined to a
point that does not justify operating the thermal /catalytic unit in the continuous mode. Since
restart of the thermallcatalytic unit on April 20, 2006, the ,influent concentrations, based on
Tedlar0 bag data, declined to less than 1,000 ppmV, even in the cycling operational mode. As
stated in Section 3.1.1, E2C has conducted several cycling events of varying duration,. and
influent concentrations have failed to rebound, as follows:
E2C Pemediation 10
FI
IProject Number 1803BK26 March 26. 2007
' 10/31/05 (Influent = 2,350 ppmV) to 11/11/05 (Influent = 1,850 ppmV)
11/28/05 (Influent = 1,589 ppmV) to 12/12/05 (Influent = 1,825 - declined to 1,000 ppmV)
' 2/7/06 (Influent = 2,850 ppmV) to 3/3/06 (Influent = 4,450 ppmV — declined to 512 ppmV)
The declining influent concentrations indicate that remediation at the site is nearing completion.
4.0 CONCLUSIONS
' Based on the site assessment work, groundwater monitoring data and remedial operational data
obtained at the Site to date, E2C concludes the following:
■ The average groundwater elevations beneath the Site decreased an average of 1.99 feet
' in the First Quarter 2007, and the groundwater flow direction was southeasterly. Note:
Groundwater flow direction and gradient is likely influenced by recharge from the unlined
canal located just west of the Site;
• Remedial operations (using the VE/GASS) at the Site have been highly effective in
removing fuel hydrocarbons from the subsurface and in controlling migration of the
groundwater fuel hydrocarbon plume;
• Groundwater samples collected from MW -5, the downgradient monitoring well, have
been non - detect for the COCs for five (5) consecutive quarters, and prior to that, only
occasional low concentrations of COCs were reported;
■ MtBE has not been reported since the August 24, 2005 sampling event;
■ Fuel hydrocarbon concentrations (BTEX and TPHg) in groundwater have shown
significant reductions across the Site since startup of the remediation system;
■ Fuel hydrocarbon mass removed, as of August 2, 2006, has been calculated as
approximately 176,152 Ibs, or approximately 27,523 gallons; and
■ Remedial system influent concentration averages indicated that the thermal/catalytic
oxidizer unit may have reached the limit of its effectiveness for continual operations
mode, and that the time and costs necessary to modify the remedial system to an
electric /catalytic oxidizer are prohibitive.
5.0 RECOMMENDATIONS
E2C makes the following conclusions based on the above conclusions and the data presented in
this report:
• Continue to monitor and sample groundwater at the Site on a quarterly basis;
• Analyze groundwater samples for BTEX, MtBE, TBA, DIPE, ETBE and TAME using EPA
Method 8260B, and for TPHg using EPA Method 8015M;
• Discontinue analysis for 1,2 DCA and EDB;
• Prepare a Workplan to modify the remedial system a granular activated carbon
absorption system. This would require a modification to the Permit To Operate; and
• Continue to submit groundwater monitoring reports and remediation status reports to the
Client, the RWQCB and the BFD on a quarterly basis.
E2C Remediation 11
Proiect Number 1803BK26 March 26 2007
6.0 LIMITATIONS AND REPORT CERTIFICATION
E2C performed this investigation in accordance with the generally accepted standards of care
existing in California at this time. It should be recognized that definition and evaluation of
geologic conditions is a difficult and inexact science. Judgments leading to conclusions and
recommendations are generally made with limited knowledge of subsurface conditions present.
No warranty, expressed or implied, is made.
This report has been prepared by E2C under the professional supervision of the registered
professional whose seal and signature appear herein. The conclusions of this report are based
solely on the Scope of Services outlined and the sources of information referenced in this report.
Any additional information that becomes available concerning the Site should be submitted to
E2C so that our conclusions may be reviewed and modified, if necessary. This report was
prepared for the sole use of Mr. Nassri Jaber and /or agent(s), the RWQCB, and the BFD.
Prepared By:
G
DANIEL
HIDALGO
-
/ \ N 0. 859 q
Daniel Hidalgo
Senior Hydrogeologist �aP CAI. 0
CHG 659 Reg. Exp. 6 -30 -07
Reviewed By:
William Lawson, P
Senior Geologist
`no (P A
9
�� 7171
#71 � �
9T
ESC Remediation 12
Proiect Number 1803BK26 _March 26. 2007
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
FIGURES
Site Location Map
Site Plan
First Quarter 2007 Groundwater Gradient Plot
First Quarter 2007 Benzene Distribution Plot
First Quarter 2007 TPHg Distribution Plot
E2C Remediation Figures
AS -1
VE -2 -211 MW-4
a
MW -1
VE -1SAD� a
Fuel
Dispensers Remediation
AS -2 Equipment
Compound
E S -3DM a
MW -2
C
z
0
z
G
M
z
c
M
0
M
z
M
71
r
z
M
0 ' 40 FT
SCALE
AS -3 MW-3 AS-4 VE-4
0 a 0 M
PACIFIC STREET —
MINIT STOP MARKET
E2C Remediation 2900 NORTH UNION AVE :FIGURE
5300 Woodmere Dr., Suite 105 BAKERSFIELD, CALIFORNIA
Bakersfield, CA 93313
Phone: (661) 831 - 6906 SITE PLOT 2
Fax: 661) 831 -6234
LEGEND
MW -1
Groundwater Monitoring
Qk,
Well Location
AS -1
W
Air Sparge Well Location
VE
Vapor Extraction Well Location
AS -3 MW-3 AS-4 VE-4
0 a 0 M
PACIFIC STREET —
MINIT STOP MARKET
E2C Remediation 2900 NORTH UNION AVE :FIGURE
5300 Woodmere Dr., Suite 105 BAKERSFIELD, CALIFORNIA
Bakersfield, CA 93313
Phone: (661) 831 - 6906 SITE PLOT 2
Fax: 661) 831 -6234
AS -1
VE -2
-2
UST
/AiIW -4
/ 2
/ 6.90
MW -1 /
V E -1 S -1 D M Q�k
Fuel
7.43
.,SP
Dispensers
/
Remediation
AS-Y'
Equip )pent
on;0ound
2
/
E
-31)
♦
MW -2
Q'k
♦
6 00
6.53
A4P31
'
VE-4
W-3
M o� 5.63 ♦ /
�p
o� ♦
PACIFIC STREET —
— -
O
Z
M
c
M
J
Z
, a• 00
m
��
/'t
z
M
/
/
0
40 FT
I
Z �
SCALE
I_FG_F_N_n
200
MW -1
Groundwater Monitoring
.7
Well Location with Groundwater
Elevation in Feet Above Mean
7.43
Sea Level (MSL)
MW -5
Groundwater Elevation Contour
In Feet Above MSL (dashed where
moo`
approximate, queried where
1.03
unknown)
AS -1.
0
Air Sparge Well Location
VE
Vapor Extraction Well Location
MINIT STOP MARKET
E2C Remediation
2900 NORTH UNION AVE
FIGURE
5300 Woodmere Dr., Suite 105
BAKERSFIELD, CALIFORNIA
Fig!a
kersfield, CA 93313
_
Phone: (661) 831 -6906
FIRST QUARTER 2007
3
GROUNDWATER GRADIENT PLOT
Fax: (661) 831 -6234
AS -1
VE -2 -2 M UST MW-4
a
ND
MW -1
VE- 1S -1D1111111111 Q,%
Fuel 5.5
Dispensers Remediation
AS -2 Equipment
Compound
E IS-3D M
MW -2
ND
AS -3 MW-3 AS-4 VE-4
18
PACIFIC STREET
C
2
0
MINIT STOP MARKET
EZC Remediation 2900 NORTH UNION AVE (FIGURE
5300 Woodmere Dr., Suite 105 BAKERSFIELD, CALIFORNIA
kers field, CA 93313 %.�a
FIRST QUARTER 2007
Phone: (661) 831 -6906 BENZENE DISTRIBUTION PLOT 4
Fax: 661) 831 -6234
Fuel
Dispensers
C
z
0
UST
MW-4
a
ND
MW-1
VE -1 S -1 D M ij?�
6,300
Remediation
AS -2
Equipment
Compound
S -3D M
MW -2
Q�k
ND
AS -3
MW-3 AS-4 VE-4
PACIFIC STREET
MINIT STOP MARKET
EC Remediation 2900 NORTH UNION AVE FIGURE
5300 Woodmere Dr., Suite 105 BAKERSFIELD, CALIFORNIA
ZBakersfiefd, CA 93313
rnone: (661) 831 -690 FIRST QUARTER 2007 5
Fax: (661 831 -6234 TPHg DISTRIBUTION PLOT
Proiect Number 1803BK26 _March 26,200
TABLES
Table 1 Summary of First Quarter 2007 Groundwater Monitoring Data
Table 2 Summary of Historical Groundwater Elevation Data
Table 3 Summary of Historical Groundwater Analytical Data
Table 4 Summary of VE /GASS Monitoring Data
Table 5 Summary of Hydrocarbon Mass Removed
Table 6 Summary of Influent Vapor Analytical Data
Table 7 Summary of Effluent Vapor Analytical Data
E2C Remediation Tables
M = M
March 26, 2007
TABLE .1
SUMMARY OF FIRST QUARTER 2007 GROUNDWATER
MINIT STOP MARKET
2900 Union Avenue
Bakersfield, California
January 16,
MONITORING DATA
2007
ID
TOC Elevation
Depth to Water
GW Elevation
B I T I E
I X I TPHg
MtBE
I TBA
I DIPE
ETBE
TAME
1,2 -DCA
EDB
u /L
Well
feet MSL
feet BTOC
feet MSL
MW -1
123.15
115.72
7.43
5.5
2.8
2.8
12
6,300
nd <0.5
nd <2.5
nd<0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
MW -2
121.86
115.33
6.53
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <50
nd <0.5
nd <2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
MW -3
122.29
116.66
5.63
18
320
250
1,500
44,000
nd <0.5
nd <2.5
nd <0.5
nd <0.5
nd <0.5
nd<0.5
nd <0.5
duplicate
18
320
250
1,500
44,000
nd <0.5
nd <2.5
nd <0.5.
nd <0.5
nd <0.5
nd <0.5
nd <0.5
MW -4
123.25
116.35
6.90
nd <0.5
nd<0.5
nd <0.5
nd<0.5
nd <50
nd <0.5
nd <2.5
nd <0.5
nd<0.5
nd <0.5
nd <0.5
nd <0.5
MW -5
121.84
1 120.81
1.03
1 nd <0.5
nd <0.5
nd <0.5
nd <0.5
I nd <50
I nd <0.5
nd <2.5
nd <0.5
1 nd <0.5
1 nd< .51
nd <0.5 '
nd <0.5
Notes:
1,2 -DCA= 1,2- Dichloroethane
B= Benzene
BTOC = Below top of casing
DIPE = Di- isopropyl Ether
E = Ethylbenzene
EDB = Ethylene Dibromide (a.k.a. Dibromo Methane)
ETBE = Ethyl tertiary-butyl Ether
GW = Groundwater
LEAD = Dissolved Lead
MtBE = Methyl tertiary -Butyl Ether
na = Not analyzed
nd = Not detected at or above the Method Detection Limit, which is indicated by number.
T = Toluene
TAME = Tertiary-Amyl Methyl Ether
TBA = Tertiary -Butyl Ether (a.k.a tert- butanol)
TOC = Top of casing
TPHg = Total Petroleum Hydrocarbons as gasoline
ug/kg = micrograms per liter
X = Total xylenes
Sample MW -6 on chain-of-custody is duplicate of MW -3.
E2 C Remediation
Table 1 -1
Project Number 1803BK26
March 26, 2007
TABLE 2
SUMMARY OF HISTORICAL GROUNDWATER ELEVATION DATA
MINIT STOP MARKET
2900 Union Avenue
Bakersfield, California
WELL ID
DATE
TOTAL
DEPTH
(feet BTOC)
DEPTH
TO GW
(feet BTOC)
TOC
ELEVATION
(feet MSL)
GW
ELEVATION
(feet MSL)
GW ELEVATION
'CHANGE
(feet)
Mw -1
4/19/02
135.44
117.68
sp
5/23/02
137.00
117.70
-0.02
8/15/02
135.37
114.98
2.72
12/9/02
135.32
118.22
-3.24
2128/03
135.50
121.10
19991
78.81
-2.88
6/5/03
137.00
119.15
80.76
1.95
10110/03
135.50
113.93
85.98
5.22
12/9/03
135.45
115.82
84.09
-1.89
3/30/04
135.50
119.64
80.27
-3.82
6/14/04
135.50
116.87
83.04
2.77
9/3/04
135.50
113.50
123.15
9.65
3.37
12/10/04
135.45
116.39
6.76
-2.89
3/16/05
135.45
119.20
3.95
-2.81
5/31/05
135.45
116.77
6.38
2.43
8/24/05
135.45
111.93
11.22
4.84
11/8/05
135.45
113.25
9.90
-1.32
217106
135.45
117.75
5.40
-4.50
5/5/06
135.45
117.60.
5.55
0.15
8/11/06
135.45
112.62
10.53
4.98
10/30/06
135.45
113.60
9.55
-0.98
1/16/07
135.45
115.72
7.43
-2.12
Ez C Remediation Table 2 -1
' Project Number 1803BK26 March 26, 2007
TABLE 2
SUMMARY OF HISTORICAL GROUNDWATER ELEVATION DATA
MINIT STOP MARKET
2900 Union Avenue
Bakersfield, California
WELL ID
DATE
TOTAL
DEPTH
(feet BTOC)
DEPTH
TO GW
(feet BTOC)
TOC
ELEVATION
(feet MSL)
GW
ELEVATION
(feet MSL)
GW ELEVATION
CHANGE
(feet)
MW -2
2/28/03
134.80
120.50
198.42
77.92
6/5/03
134.66
118.60
79.82
1.90
10/10/03
135.50
113.50
84.92
5.10
12/9/03
135.74
115.20
83.22
-1.70
3/30/04
135.50
118.96
79.46
-3.76
6/14/04
135.50
116.31
82.11
2.65
9/3/04
135.50
112.98
121.86
8.88
3.33
12/10/04
135.74
116.00
5.86
-3.02 .
3/16/05
135.74
118.76
3.10
-2.76
5/31/05
135.75
116.18
5.68
2.58
8/24/05
135.75
111.28
10.58
4.90
11/8/05
135.75
112.81
9.05
-1.53
2/7/06
135.75
116.80
5.06
-3.99
5/5/06
135.75
117.08
4.78
-0.28
8/11/06
135.75
112.08
9.78
5.00
10/30/06
135.75
113.18
8.68
-1.10
1/16/07
135.75
115.33
6.53
-2.15
E2 C Remediation Table 2 -2
' Project Number 1803BK26 March 26, 2007
TABLE 2
SUMMARY OF HISTORICAL GROUNDWATER ELEVATION DATA
MINIT STOP.MARKET
2900 Union Avenue
Bakersfield, California
WELL ID
DATE
TOTAL
DEPTH
(feet BTOC)
DEPTH
TO GW
(feet BTOC)
TOC
ELEVATION
(feet MSL)
GW
ELEVATION
(feet MSL)
GW- ELEVATION
'CHANGE
(feet)
MW -3
2/28/03
134.90
121.76
199.01
77.25
6/5/03
134.85
120.08
78.93
1.68
10/10/03
134.90
115.09
83.92
4.99
12/9/03
134.85
116.62
82,39
-1.53
3/30/04
134.90
120.25
78.76
-3.63
6/14/04
134.90
117.94
81.07
2.31
9/3/04
134.90
115.08
122.29
7.21
2.86
12/10/04
134.85
117.41
4.88
-2.33
3/16/05
134.85
120.10
2.19
-2.69
5/31/05
134.85
118.95
3.34
1.15
8/24/05
134.85
112.94
9.35
6.01
11/8/05
134.85
114.35
7.94
-1.41
2!7/06
134.85
116.85
5.44
-2.50
5/5/06
134.85
117.75
4.54
-0.90
8/11/06
134.85
113.80
8.49
3.95
10/30/06
134.85
114.64
7.65
-0.84
1/16/07
134.85
116.66
5.63
-2.02
E2 C Remediation Table 2 -3
' Project Number 1803BK26 March 26, 2007
TABLE 2
SUMMARY OF HISTORICAL GROUNDWATER ELEVATION DATA
MINIT STOP MARKET
2900 Union Avenue
Bakersfield, California
WELL ID
DATE
TOTAL
DEPTH
(feet BTOC)
DEPTH
TO GW
(feet BTOC)
TOC
ELEVATION
(feet MSL)
GW
ELEVATION
(feet MSL)
GW- ELEVATION
CHANGE
(feet)
MW -4
2/28/03
135.00
121.40
200.00
78.60
6/5/03
136.21
120.02
79.98
1.38
10/10/03
136.20
114.80
85.20
5.22
12/9/03
135.05
116.25
83.75
-1.45
3/30/04
136.20
120.00
80.00
-3.75
6/14/04
136.20
118.05
81.95
1.95
9/3/04
136.20
114.36
123.25
8.89
3.69
12 /10 /04
135.05
117.00
6.25
-2.64
3/16/05
135.05
119.80
3.45
-2.80
5/31/05
135.05
117.65
5.60
2.15
8/24/05
135.00
112.88
10.37
4.77
11/8/05
135.00
113.98
9.27
-1.10
2/7106
135.00
117.80
5.45
-3.82
5/5/06
135.00
117.96
5.29
-0.16
8/11/06
135.00
113.62
9.63
4.34
10/30/06
135.00
114.32
8.93
-0.70
1/16/07
135.00
116.35
6.90
-2.03
E2 C Remediation Table 2 -4
' Project Number 1803BK26 March 26, 2007
E2 C Remediation Table 2 -5
TABLE 2
SUMMARY OF HISTORICAL
GROUNDWATER ELEVATION
DATA
MINIT STOP MARKET
2900 Union Avenue
Bakersfield, California
TOTAL
DEPTH
TOC
GW
GW ELEVATION
WELL ID
DATE
DEPTH
TO GW
ELEVATION
ELEVATION
'CHANGE
(feet BTOC)
(feet BTOC)
(feet MSL)
(feet MSL)
(feet)
10/10/03
135.05
119.90
12/9/03
135.03
121.10
-1.20
sp
3/30/04
135.05
124.12
-3.02
6/14/04
135.05
122.18
1.94
9/3/04
135.05
119.13
2.71
3.05
12/10/04
135.03
121.58
0.26
-2.45
3/16/05
135.03
123.90
-2.06
-2.32
5/31/05
135.00
122.00
-0.16
1.90
MW -5
8/24/05
135.00
117.86
3.98
4.14
11/8/05
135.00
118.84
3.00
-0.98
121.84
251106
135.00
121.95
-0.11
-3.11
5/5/06
135.00
122.70
-0.86
-0.75
8/11/06
135.00
118.37
3.47
4.33
10/30/06
135.00
119.20
2.64
-0.83
1/16/07
135.00
120.81
1.03
-1.61
NOTES:
BTOC = Below Top of Casing
GW Elev. Chg.
GW = Groundwater
3rd.05
4.93
MSL = Mean Sea Level
4th.05
-1.27
TOC = Top of Casing
1 st.06
-3.58
sp = Survey pending
2nd.06
-0.39
3rd.06
4.52
4th.06
-0.89
1 st.07
-1.99
E2 C Remediation Table 2 -5
Project Number 1803BK26
March 26, 2007
TABLE 3
SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA
MINIT STOP MARKET
2900 Union Avenue
Bakersfield, California
Well
Sample
B
T E X TPHg I MtBE I TBA DIPE
ETBE
TAME 1,2 -DCA EDB Dis. Lead
ID
Date
_
Ng/L
2/18/98
nd <0.5
nd <0.5
nd<0.5
130
380
1,570
nd
na
na
na
na
na
na
duplicate
nd <0.5
nd<0.5
nd <0.5
140
390
1,770
nd
na
na
na
na
na
na
5/23/02
nd <0.5
nd <0.5
nd <0.5
nd <0.5
5,200
4,040
nd
na
na
na
na
na
na
duplicate
nd <0.5
nd <0.5
nd <0.5
nd <0.5
5,350
3,730
nd
na
na
na
na
na
na
8/15/02
nd <0.5
nd <0.5
nd <0.5
nd <0.5
6,000
_
5,780,
na
na .
na
na
_
na
_ _
na
na
duplicate
nd <0.5
nd <0.5
nd<0.5
nd <0.5
6,250
5,590
na
na
na
na
na
na
na
12/9/02
nd <0.5
nd <0.5
nd <0.5
130
12,300
11,630
nd <2.5
nd <0.5
nd <0.5
nd <0.5
2.2
nd <0.5
nd <0.05
duplicate
nd <0.5
nd <0.5
1.0
130
13,730
11,660
nd <2.5
nd <0.5
1.9
nd <0.5
3.7
nd <0.5
nd<0.05
2/28/03
nd <0.5
nd <0.5
nd <0.5
nd <0.5
21,000
20,900
68.0
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
duplicate
nd <0.5
nd <0.5
nd <0.5
nd <0.5
19,200
19,100
98.3
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
6/5/03
3,270
10,600
383
7,944
40,800
12,700
157
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
duplicate
3,550
11,500
371
8,185
48,000
13,500
171
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
10/10/03
590
1,960
25
10,080
18,900
74,600
180
nd <0.5
nd <0.5,
nd <0.5
nd <0.5
nd <0.5
na
Mw
duplicate
580
2,120
25
10,180
18,850
67,000
172
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
-1
12/9/03
1,292
3,471
475
2,540
14,032
31,188
nd <2.5
nd <0.5
21
20
nd <0.5
130
na
duplicate
1,450
4,246
470
2,544
14,130
31,804
nd <2.5
nd <0.5
26
20
nd <0.5
140
na
3/30/04
174
1,605
2,690
2,508
66,407
12,365
nd <2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
duplicate
181
1,589
2,570
21455
67,152
12,210
nd <2.5
na <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
6/14/04
nd <0.5
nd <0.5
nd <0.5
nd <0.5
307
9.0
nd <2.5
nd<0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
9/3/04
nd <0.5
nd <0.5
nd <0.5
4.3
270
19
nd <2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
duplicate
nd <0.5
nd <0.5
nd <0.5
4.2
330
20
nd <2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd<0.5
na
12/10/04
nd <0.5
16
9.4
78
1,700
nd <0.5
nd <2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
duplicate
nd <0.5 1
15
9.3
78
1,700
nd <0.5
nd <2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
3/16/05
nd <0.5
nd <0.5
nd <0.5
5.4
750
nd<0.5
nd<2.5
nd <0.5
nd <0.5
nd <0.5
nd<0.5
nd <0.5
na
5%31/05
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <50
nd <0.5
nd <2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
8/24/05
nd <0.5
10
12
260
3,200
nd <0.5
nd <2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
11/8/05
nd<0.5
nd <0.5
nd <0.5
nd <0.5
nd <50
nd <0.5
nd <2.5
nd <0.5.
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
duplicate
nd <0.5
nd <0.5
nd <0-.5
nd <0:5
nd <50
nd <0.5
nd <2.5
nd <0.5
nd <0:5
nd <0:5
� nd <0.5
nd <0.5
na
E2 Remediation Table 3 -1
Project Number 1803BK26 March 26, 2007
E2 C Remediation Table 3 -2
TABLE 3
SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA
MINIT STOP MARKET
2900 Union Avenue
Bakersfield, California
Well
Sample
B
T
E
X
TPHg F MtBE TBA
DIPE
ETBE
TAME
1,2 -DCA
EDB
Dis. Lead
ID
Date
pg/L
2/7106
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <50
nd <0.5
nd<2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
5/5/06
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <50
nd <0.5
nd<2.5
nd<0.5
nd <0.5
nd<0.5
nd <0.5
nd <0.5
na
MW -1
8/11/06
nd <0.5
nd <0.5
nd <0.5
17
4,600
nd <0.5
nd <2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
10/30/06
11
2.0
5.2
28
13,000
nd <0.5
nd <2.5
nd<0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
1/16/07
5.5
2.8
2.8
12
6,300
nd <0.5
nd<2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
E2 C Remediation Table 3 -2
Project Number 1803BK26
March 26, 2007
TABLE 3
SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA
MINIT STOP MARKET
2900 Union Avenue
Bakersfield, California
Well
Sample
B T E X TPHg MtBE I TBA DIPE I ETBE TAME 1,2 -DCA EDB Dis. Lead
ID
Date
L
2/28/03
nd <0.5
nd <0.5
nd <0.5
3.74
1,600
1,590
nd <2.5
nd <0.5
nd <0.5
nd <0.5
1.92
nd <0.5
na
6/5/03
nd <0:5
nd <0.5
nd <0.5
nd <0.5
76.0
212
nd <2.5
;nd<0.5
nd <0.5
nd <0.5
nd <0.5
nd<0.5
na
10/10/03
40
44
180
452
4,155
3,280
nd <2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
12/9/03
nd <0.5
nd <0.5
0.6
14
226
2,286
12
nd <0.5
nd <0.5
nd <0.5
4
nd <0.5
na
3/30/04
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <50
273
nd <2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
6/14/04
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <50
13
nd<2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
9/3/04
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <50
8.0
nd <2.5
nd<0.5
nd <0.5
nd <0.5
nd <0.5
nd<0.5
na
12/10/04
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <50
nd <0.5
nd <2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
MW -2
3/16/05
nd <0.5
nd <0.5
nd<0.5
nd <0.5
nd <50
nd <0.5
nd <2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
5/31/05
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <50
nd<0.5
<2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
8/24/05
nd <0.5
nd <0.5
nd <0.5
nd<0.5
nd <50
nd <0.5
_nd
nd <2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
11/8/05
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <50
nd <0.5
nd <2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
2/7/06
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <50
nd <0.5
nd <2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
5/5/06
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <50
nd<0.5
nd <2.5
nd<0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
8/11/06
nd <0.5
nd <0.5
nd<0.5
nd <0.5
nd <50
nd <0.5
nd<2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd<0.5
na
10/30/06
nd <0.5
nd <0.5
nd<0.5
nd <0.5
nd <50
nd<0.5
nd<2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
1/16/07
nd <0.5
nd<0.5
nd <0.5
nd <0.5
nd <50
nd <0.5
nd <2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
E2 Aemediation Table 3 -3
N M = = = M
March 26, 2007
TABLE 3
SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA
MINIT STOP MARKET
2900 Union Avenue
Bakersfield, California
Well
Sample
B I T I E -Xi TPHg I MtBE I TBA I DIPE I ETBE I TAME 1,2 -DCA EDB Dis. Lead
ID
Date
L
2/28/03
nd <0.5
nd <0.5
nd <0.5
63.9
2,950
"2,870
nd<2.5
nd <0.5
nd <0.5
I nd <0.5
15.9
nd <0.5
na
6/5/03
nd <0.5
nd<0.5
nd <0.5
0.8
429
305
nd<2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
10/10/03
110
170
nd <0.5
260
5,370
550
nd <2.5
nd <0.5
nd<0.5
nd <0.5
nd <0.5
nd<0.5
na
12/9/03
1,129
5,328
766
2,669
10,026
928
nd <2.5
nd<0.5
7.0
nd<0.5
8.0
3.0
na
3/30/04
9,800
18,050
3305
3,310
68,121
19,626
nd <2.5
nd <0.5
nd <0.5
nd <0.5
22
nd <0.5
na
6/14/04
du lip cate
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <50
nd <50
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
na
9/3/04
nd <0.5
4.3
nd <0.5
3.0
330
780
nd <0.5
nd<0.5
nd<0.5
nd <0.5
nd <0.5
3.3
na
12/10/04
54
2,700
190
2,300
25,000
410
nd <0.5
nd <0.5
nd <0.5
nd <0.5
1.3
710
na
3/16/05
duplicate
650
650
1,200
1,200
540
540
2,000
2,000
32,000
32,000
22
21
nd <2.5
nd <2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5_
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
na
5/31/05
duplicate
10
10
10
10
nd <0.5
nd <0.5
870
860
_
3,100
3,100
23
24
nd <2.5
nd <2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd<0.5
nd <0.5
nd <0.5
nd <0.5
na
na
MW -3
8/24/05
duplicate
nd <0.5
nd <0.5
8.8
8.7
3.2
3.1
100.
98
1,100
1,100
nd<0.5
nd <0.5
nd <2.5
nd <2.5
nd <0.5
nd<0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd<0.5
nd <0.5
nd <0.5
nd <0.5
na
na
11/8/05
nd <0.5
1 9.5
3.4
99
1,100
nd <0.5
nd <2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
2/7/06
duplicate
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <50
nd <50
nd <0.5
nd <0.5
nd <2.5
nd <2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd<0.5
nd <0.5
nd<0.5
nd <0.5
na
na
5/5/06
duplicate
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <50
nd<50
nd <0.5
nd<0.5
nd <2.5
nd<2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
na
8/11/06
duplicate
4.0
4.0
78
78
15
15
2,300
2,300
25,000
25,000
nd <0.5
nd <0.5
nd <2.5
nd <2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
na
10/30/06
duplicate
3.0
3.0
320
320
170
170
1,600
1,600
42,000
42,000
nd <0.5
nd <0.5
nd <2.5
nd <2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
na
1/16/07
duplicate
18
18
320
320
250
250
1,500
1,500
44,000
44,000
nd <0.5
nd <0.5
nd <2.5
nd <2.5
nd <0.5
nd <0.5
nd<0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
na
E2 C Remediation
Table 3 -4
Project Number 1803BK26
March 26, 2007
TABLE 3
SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA
MINIT STOP MARKET
2900 Union Avenue
Bakersfield, California
Well
Sample
B T I E I X TPHg I MtBE I TBA I DIPE I ETBE TAME 1,2 -DCA I EDB I Dis. Lead
ID
Date
/L
2/28/03
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <50
nd <0.5
nd <2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
6/5/03
0.8
nd <0.5
nd <0.5
nd <0.5
nd <50
nd <0.5
nd <2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
10/10/03
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd<50
8.5
nd<2.5
nd <0.5
nd<0.5
nd <0.5
nd <0.5
nd <0.5
na
12/9/03
nd <0.5
nd <0.5
0.6
nd <0.5
nd <50
nd <0.5
nd <2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
3/30/04
nd <0.5
nd <0.5
nd <0,5
nd <0.5
nd <50
nd <0.5
nd <2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
_
na
6/14/04
1.0
nd<0.5
nd <0.5
nd <0.5
nd <50
1,388
nd <2.5
1.0
nd <0.5
nd<0.5
9.0
nd <0.5
na
9/3/04
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <50
nd <0.5
nd <2.5
nd<0.5
nd <0.5
nd<0.5
nd <0.5
nd <0.5
na
12/10/04
nd <0.5
nd<0.5
nd <0.5
nd<0.5
nd <50
nd <0.5
nd <2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
MW
3/16/05
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <50
nd <0.5
nd <2.5
nd <0.5
nd <0.5
nd <0.5
nd<0.5
nd <0.5
na
-4
5/31/05
nd <0.5
2.3
nd <0.5
nd <0.5
nd <50
nd <0.5
nd <2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
8/24/05
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <50
nd <0.5
nd <2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
11/8/05
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <50
nd<0.5
nd <2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
2/7/06
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <50
nd <0.5
nd <2.5
nd<0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
5/5/06
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd<50
nd <0.5
nd <2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
8/11/06
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <50
nd <0.5
nd <2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
10/30/06
nd<0.5
nd <0.5
nd<0.5
nd <0.5
nd <50
nd<0.5
nd <2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
1/16/07
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <50
nd <0.5
nd <2.5
nd <0.5
nd <0.5
nd <0.5
nd<0.5
nd <0.5
na
E 2 C Remediation Table 3 -5
Project Number 1803BK26
March 26, 2007
E2 Remediation Table 3 -6
TABLE 3
SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA
MINIT STOP MARKET
2900 Union Avenue
Bakersfield, California
Well
Sample
B
T E X
TPHg MtBE
I TBA
DIPE
ETBE
TAME
1,2 -DCA
EDB Dis. Lead
ID
Date
L
10/10/03
nd <0.5
nd<0.5
nd<0.5
nd <0.5
nd <50
nd <0.5
nd <2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
12/9/03
nd <0.5
nd<0.5
0.6
0.6
nd <50
nd<0.5
nd<2.5
nd <0.5
nd <0.5
nd<0.5
nd <0.5
nd <0.5
na
3/30/04
nd <0.5
nd <0.5
nd<0.5
nd <0.5
nd<50
nd <0.5
nd<2.5
nd<0.5
nd <0.5
nd<0.5
nd <0.5
nd <0.5
na
6/14/04
nd <0.5
nd<0.5
nd <0.5
nd <0:5
nd <50
193
nd <2.5
nd<0.5
nd <0.5
nd<0.5_
1.0
nd <0.5
na
9/3/04
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <50
nd <0.5
nd <2.5
nd<0.5
nd<0.5
nd <0.5
nd <0.5
nd <0.5
na
12/10/04
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <50
nd <0.5
nd <2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
3/16/05
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <50
nd <0.5
nd <2.5.
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
MW
5/31/05
nd <0.5
3.7
nd <0.5
nd <0.5
nd <50
2.3
nd <2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
-5
8/24/05
nd <0.5
nd<0.5
nd<0.5
nd<50
nd<0.5
nd <2.5
nd<0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
11/8/05
nd <0.5
nd <0.5
nd<0.5
_nd<0.5
nd <0.5
nd<50
nd <0.5
nd <2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
2/7/06
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <50
nd <0.5
nd <2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
5/5/06
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <50
nd <0.5
nd <2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
8/11/06
nd <0.5
nd <0.5
nd <0.5
nd<0.5
nd <50
nd <0.5
nd<2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
10/30/06
nd <0.5
nd<0.5
nd <0.5
nd <0.5
nd <50
nd <0.5
nd <2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
1/16/07
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <50
nd <0.5
nd <2.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
nd <0.5
na
Notes:
Results in micrograms per liter (µg/1) = parts per billion (ppb)
Analytical Methods: BTEX, oxygenates, 1,2 -DCA, and EDB by EPA Method 8260b; TPHg by EPA Method 8015M; Dissolved Lead by EPA Method 3010A/6010B
Method Detection Limits: BTEX - 0.5 pg /L; TPHg - 50 pg/L; MtBE, ETBE, TAME, and DIPE - 0.5 pg/L; TBA - 2.5 pg /L
1,2 -DCA = 1,2- Dichloroethan( EDB = Ethylene dibromide T = Toluene
B= Benzene ETBE = Ethyl tertiary-butyl Ether TAME = Tertiary-Amyl Methyl Ether
DIPE = Di- isopropyl Ether MtBE = Methyl tertiary-Butyl Ether TBA = Tertiary Butyl Alcohol (a.k.a. tert- butanol)
Dis. Lead = Dissolved lead na = Not analyzed TPHg - Total Petroleum Hydrocarbons as gasoline
E = Ethylbenzene nd - Not Detected at or above Method Detection Limit indicated by value X = Total xVienes
E2 Remediation Table 3 -6
Project Number 1803BK26
March 26, 2007
TABLE 4A
SUMMARY OF VES MONITORING DATA
MINIT STOP MARKET
2900 Union Avenue
Bakersfield, California
Date
Monitored
Cumulative
Calendar
Days
Operating
Hours
Cumulative
Operating
Hours
Inlet
Flow
(scfm)
Combustion
Temp.
( °F)
Stack
Temp.
( °F)
Field
TPH in
(ppmv)
Lab
TPH in
(ppmv)
Field
TPH out
(ppmv)
Lbs. /Hr.
Extracted
Cumulative
Lbs.
Extracted
Cumulative
Gallons
Extracted
4/29/04
0
81
0
276
1515
1505
50,000
0
187.64
15,290
2,389
4/30/04
1
105.5
24.0
284
1525
1485
50,000
0
193.08
19,924
3,113
5/3/04
4.
177.5
96.0
265
1495
1360
50,000
0
180.16
32,897
5,140
5/4/04
5
201.8
120.3
264
1489
1314
50,000
0
179.48
37,259
5,822
5/7/04
8
273.0
191.5
261
1477
1379.
48,408
0
171.79
49,490
7,733
5/10/04
11
345.5
264.0
271
1471
1351
37,000
_
0
136.34
59,375
9,277
5/13/04
14
417.5
336.0
268
1486
1358
19,300
0
70.33
64,437
10,068
5/17/04
18
516.0
434.5
267
1476
1355
17,000
0
61.72
70,517
11,018
5/24/04
25
685.0
603.5
266
1481
1353
4,000
0
14.47
72,962
11,400
6/1/04
33
876.0
1450.0
267
1488
1354
7,700
0
27.95
96,625
15,098
617/04
39
1024.0
3100.0
258
1483
1341
9,515
0
33.38
151,699
23,703
6/14/04;
46
1189.0
3800.0
261
1489
1383
7,000
0
24.84
169,088
26,420
6/15/04
47
1203.0
2400.0
230
1488
1354
6,950
0
21.73
138,660
21,666
6/21/04
53
1357.0
2554.0
220
1479
1477
6,600
0
19.74
141,700
22,141
7/2/04
64
1620.0
2817.0
220
1480
1337
6,320
25
18.91
146,672
22,918
7/6/04
68
1716.0
2913.0
214
1481
1341
3,000
20
8.73
147,510
23,048
7/20/04
82
2050.0
5100.0
214
1482
1345
7,550
23
21.97
195,555
30,555
7/26/04
88
2198.0
3625.0
212
1473
1333
4,020
28
11.59
178,463
27,885
8/4/04
97
2409.2
1701.0
215
1470
1472
6,300
15
18.42
143,029
22,348
8/10/04
103
2551.4
1588.5
215
1477
1465
5,300
21
15.49
141,286
22,076
8/1.7/04
110
2724.2
1412.5
223
1489
1475
2,800
0
8.49
139,792
21,842
8/24/04
117
2789.0
1000.0
216
1485
1361
5,980
15
17.56
132,547
20,710
9/1/04.
125
2978.0
1189.0
199
1487
1341
4,185
30
11.32
134,687
21,045
9/3/04
127
3023.0
430.0
210
1415
1395
4,950
28
14.13
123,960
19,369
9/7/04
131
3117.0
2100.0•
201
1474
1335
4,260
14
11.64
143,402
22,407
9%13/04
137
3258.2
840.0
215
1482
1354
4,110
0
12.03
128,246
20,038
9/20/04
144
3258.2
505.0
181
30
1354
5,230
20
12.87
123,934
19,365
9/27/04
151
3258.2
600.0
185
27
1354
6,560
21
16.54
125,505
19,610
10/4/04
158
3258.2
600.0
222
0
0
3,175
10
9.58
125,505
19,610
10/11/04
165
3936.0
1277.9
187 1
1479
1482
1,775
0
4.51
128,564
20,088
E2 Remediation Table 4A -1
Project Number 1803BK26
March 26, 2007
TABLE 4A
SUMMARY OF VES MONITORING DATA
MINIT STOP MARKET
2900 Union Avenue
Bakersfield, California
Date
Monitored
Cumulative
Calendar
Days
Operating
Hours
Cumulative
Operating
Hours
Inlet
Flow
(scfm)
Combustion
Temp.
( °F)
Stack
Temp.
( °F)
Field
TPH in
(ppmv)
Lab
TPH in
(ppmv)
Field
TPH out
(ppmv)
Lbs. /Hr.
Extracted
Cumulative
Lbs.
Extracted
Cumulative
Gallons
Extracted
10/18/04
172
4056.0
1397.9
191
1483
1485
1,850
12
4.80
129,141
20,178
10/27/04
1.81
4280.0
1621.9.
194
1490
1479
1,900
10
5.01
130,264
20,354
11/1/04
186
4403.0
1744.9
192
1486
1481
2,700
20
7.05
131,131
20,489
11/8/04
193
4567.5
1909.4
191
1483
1482
1,550
10
4.03
131,793
20,593
11/15/04
200
4740.0
2081.9
179
1488
1482
2,650
20
6.45
132,905
20,766
11/22/05
572
4906.0
2247.9
179
1481
1480
2,350
20
5.72
133,855
20,915
11/29/04
214
5072.0
2413.9
189
1474
1334
2,275
0
5.85
134,825
21,066
12/10/04
225
5334.0
2675.9
193
1493
1487
2,200
0
5.77
136,338
21,303
12/17/04
232
5369.0
2710.9
200
1489
1491
1,850
10
5.03
136,514
21,330
12/23/04
238
5369.0
2710.9
0
0
0
0
0.00
136,514
21,330
12/28/04
243
5496.3
2838.1
120
1489
1480
1,500
0
2.45
136,825
21,379
1/4/05
250
5667.0
3008.9
212
1482
1477
1,350
10
3.89
137,490
21,483
1/14/05
260
5793.0
3134.9
221
1481
1481
710
0
2.13
137,759
21,525
1/18/05
264
5800.0
3141.9
204
1483
1483
1,200
10
3.33
137,782
21,528
1/24/05
270
5942.0
3283.9
201
1483
1479
1,850
10
5.06
138,500
21,641
1/31/05
277
6110.0
3451.9
190
1481
1482
1,300
1,900
10
4.91
139,324
21,769
2/11/05
288
6110.0
3451.9
0
0
0.00
139,324
21,769
2/14/05
291
6113.0
3454.9
184
1485
1485
1,166
1,000
20
2.50
139,332
21,771
2/21/05
298
6279.0
3620.9
184
1481
1481
1,950
10
7.76
140,619
21,972
2/28/05
305
6451.0
3792.9
180
1480
1480
2,550
20
7.59
141,924
22,176
3/7/05
312
6546.0
3887.9
187
1480
1480
3,150
5,200
21
13.22
143,180
22,372
3/16/05
321
6572.0
3913.9
186
1480
1479
2,800
0
9.61
143,430
22,411
3/21/05
326
6650.0
3991.9
190
1485
1480
2,850
20
9.82
144,196
22,531
3/28/05
333
6819.0
4160:9
185
1478
1475
2,550
20
9.56
145,811
22,783
4/4/05
340
6985.0
4326.9
183
1480
1480
1,600
6
9.46
147,381
23,028
4/13/05
349
7196.1
4537.9`
184
1478
1480'
1,600
70
9.51
149,388
23,342
4/21/05
357
7196.1
4538.0
184
1495.
1495
2,150
100
9.51
149,388
23,342
4/26/05
362
7360.0
4701.9
181
1490
1490
1,800
2,400
0
5.91
150,356
23,493
5/2/05
_
368
7505.0
4846.9
180
1478
1478
1,600
5
5.87
151,208
23,626
5/4/05 1
370 1
7673.0 1
5014.9 1
182
1480 1
1480
1,550 1
1
5 1
5.94 1
152,205 1
23,782
E2 C Remediation Table 4A -2
Project Number 1803BK26
March 26, 2007
TABLE 4A
SUMMARY OF VES MONITORING DATA
MINIT STOP MARKET
2900 Union Avenue
Bakersfield, California
Date
Monitored
Cumulative
Calendar
Days
Operating
Hours
Cumulative
Operating
Hours
Inlet
Flow
(scfm)
Combustion
Temp.
( °F)
Stack
Temp.
( °F)
Field
TPH in
(ppmv)
Lab
TPH in
(ppmv)
Field
TPH out
(ppmv)
Lbs./Hr.
Extracted
Cumulative
Lbs.
Extracted
Cumulative
Gallons
Extracted
5/16/05
382
7837.0.
5178.9
183
1480
1479
1,900
2,400
7
5.97
153,185
23,935
7/25/05
452
7936.0
5277.9
177
1506
1409
1,500
9
8.90
154,066
24,073
7/29/05
456
8125.0
5466.9
177
1488
1478
2,950
15
8.90
155,749
24,336
8/4/05
462
8168.0
5509.9
180
1482
1477
2,250
20
9.06
156,139
24,397
8/12/05
470
8364.0
5705.9
177
1474
1473
800
0
8.90
157,884
24,669
8/19/05
477
8530.0
5871.9
160
1481
1490
3,500
18
8.05
159,220
24,878
8/24/05
482
8651.0
5992.9
164
1483
1482
3,600
20
8.25
160,218
25,034
8/31/05
489
8823.0
6164.9
159
1478
1484
3,300
5,000
17
10.81
162,078
25,325
9/7/05
496
8983.0
6324.9
157
1482
1493
3,100
70
10.89
163,820
25,597
9/7/05
496
8992.0
6333.9
154
1740
1423
3,300
50
10.68
163,916
25,612
9/26/05
515
8992.0
6333.9
225
1494
1496
5,300
5,200
90
15.91
163,916
25,612
10/3/05
522
9157.5
6499.4
178
1477
1482
2,950
55
8.77
165,368
25,839
10/17/05
536
9158.0
6499.9
180
1484
1488
2,050
2,050
50
5.02
165,370
25,839
10/26/05
545
9160.0
6501.9
193
1483
1489
4,050
70
4.46
165,379
25,840
10/31/05
550
9281.0
6622.9
191
1476
1481
2,350
0
4.42
165,914
25,924
11/7/05
557
9282.0
6623.9
190
1482
1486
1,850
0
4.39
165,918
25,925
11/14/05
564
9282.0
6623.9
196
1479
1483
1,850
0
4.53
165,918
25,925
11/22/05
572
9283.0
6624.9
183
1488
1483
1,352
1,352
0
3.36
165,921
25,925
11/28/05
578
9428.0
6769.9
176
1480
1484
1,589
0
3.80
166,473
26,011
12/5/05
585
9429.0
6770.9
183
1487
1490
1,589
0
3.95
166,477
26,012
12/12/05
592
9429.0
6770.9
180
1486
1492
1,825
1,825
0
4.47
166,477
26,012
1/24/06
635
9430.0
6771.9
184
1460
1487
1,000
1,000
0
2.50
166,479
26,012
1/31/06
642
9597.0
6938.9
185
1479
1479
1,000
0
1.80
166,779
26,059
2/7/06
649
9769.0
7110.9
185
1481
1490
2,850
0.
1.80
167,089
26,108
2/13/06
655
9770.0
7111.9
190
;r 1481
1487
31750
0
1.85
167,091
26,108
2/20/06
662
9770.0
7111.9
195
1483
1490
5,500
0
1.90
167,091
26,108
2/27/06
669
.9770.0
9688.5
0
0.00
167,091
26,108
3/6/06
676
1.4
9689.9
200
1453
1459
4,450
0
1.94
167,093
26,108
3/7106
677
23.0
9711.5
199
1435
1456
512
430
0
1.16
167,118
26,112
3;1-3/0-61
683
23.0
1 9721.6
1
1
0 1
0.00
167,118
26,112
E 2 C Remediation
Table 4A -3
Project Number 1803BK26
March 26, 2007
TABLE 4A
SUMMARY OF VES MONITORING DATA
MINIT STOP MARKET
2900 Union Avenue
Bakersfield, California
Date
Monitored
Cumulative
Calendar
Days
Operating
Hours
Cumulative
Operating
Hours
Inlet
Flow
(scfm)
Combustion
Temp.
( °F)
Stack
Temp.
( °F)
Field
TPH in
(ppmv)
Lab
TPH in
(ppmv)
Field
TPH out
(ppmv)
Lbs. /Hr.
Extracted
Cumulative
Lbs.
Extracted
Cumulative
Gallons
Extracted
3/20/06
690
23.0
9721.6
0
0.00
167,118
26,112
_
3/27/06
697
23.0
9721.6
0
0.00
167,118
26,112
4/3/06
704
23.0
9721.6
0
0.00
167,118
26,112
4/20/06
721
23.4
9722.0
192
649
648
3,200
0
0.56
167,119
26,112
4/25/06
726
142.2
9840.8
322
650
652
1,600
2,100
0
9.19
168,211
26,283
5/5/06
736
380.0
10078.6
181
654
646
3,100
0
1.03
168,457
26,321
5/8/06
739
455.1
10153.7
181
655
653
2,700
0
1.03
168,534
26,333
5/22/06
753
720.1
10418.7
177
662
651
800
840
0
2.02
169,070
26,417
6/1/06
763
960.1
10658.7
185
659
648
720
Q
1.57
169,447
26,476
6/6/06
768
1080.1
10778.7
179
651
662
780
0
1.52
169,630
26,505
6/12/06
774
1224.1
10922.7
181
660
650
640
0
1.54
169,851
26,539
6/23/06
785
1488.0
11186.6
180
652
651
540
0
1.53
170,255
26,602
6/27/06
789
1586.0
11284.6
180
646
650
1,100
410
0
1.00
170,353
26,618
7/3/06
795
1732.0
11430.6
181
646
650
980
0
1.24
170,535
26,646
7/12/06
804
1949.0
11647.6
177
652
659
1,060
0
1.22
170,799
26,687
7/17/06
809
2070.0
11768.6
179
658
659
880
0
1.23
170,947
26,711
7/24/06
816
2235.0
11933.6
168
642
644
650
600
0
1.37
171,173
26,746
8/2/06
825
2313.0
12011.6
222
665
662
540
0
1.81
171,315
26,768 .
E2 Remediation Table 4A -4
Project Number 1803BK26 March 26, 2007
TABLE 4A
SUMMARY OF VIES MONITORING DATA
MINIT STOP MARKET
2900 Union Avenue
Bakersfield, California
Cumulative Cumulative Inlet Combustion Stack Field Lab Field Cumulative Cumulative
Date Calendar Operating Operating Flow Temp. Temp. 1(ppmv) TPH in TPH in TPH out Lbs. /Hr. Lbs. Gallons
Monitored Days Hours Hours (scfm) (°F) ( °F) I (ppmv) I (ppmv) Extracted Extracted Extracted
Notes:
Hydrocarbons Removed (lbs /month) = Influent Concentration (ppmv) X 10 -6 X Influent Flow Rate (scfm) X 1 lb-mole/379.5 ft3 X 86 (Ib/lb -mole) X 1440 (min /day) X Run
Time (days /month)
2/14/05 - Bag analytical data used in calculations for this time; PID malfunction
4/29/04 - VES (BF -250 CFM) operation starts with all wells open, air sparge on, and 3/4 dilution air on air filter.
Starting influent was measured with FID at a concentration greater than 50,000 ppmv.
12/22/2000 -System down, no supplemental fuel flow as supply was 'zero'; notify PG &E
12/27/2000 - Restart system; collect Tedlar bag samples; Influent TPHg = 1,550 ppmv, BTEX = 47 ppmv; effluent TPHg = 0.6 ppmv, BTEX = non - detect
5/19/2005 - City of Bakersfield issued a 7 -Day Notice to Abate, due to noise levels from remediation system. System shut down on 5/23/2005.
7/25/05 - New air compressor, and insulation for blower installed; City of Bakersfield Inspector approves restart.
9/7/2005 thru 9/26/05 - System cycled off to allow for contaminant rebound.
10/3/2005 thru 10/17/05 - System cycled off to allow for contaminant rebound.
10/31/2005 thru 11/22/05 - System cycled off to allow for contaminant rebound.
11/28/2005 thru 12/12/05 - System cycled off to allow for contaminant rebound.
2/7/06 thru 3/6/06 - System cycled off to allow for contaminant rebound:
March 6, 2006 - Hour meter reset to 0.0 by Baker Furnace during repair
March 7, 2006 - Bag data used for influent
3/7/06 thru 4/20/06 - System cycled off to allow for contaminant rebound.
8/2/06 - System cycled off to allow for contaminant rebound.
open = O; partially open = PO; closed = C
EZ C Remediation Table 4A -5
IProject Number 1803BK26 March 26, 2007
TABLE 4B
SUMMARY OF VES MONITORING DATA
MINIT STOP MARKET
2900 Union Avenue
Bakersfield, California
Date
Monitored
Well
VE -1 S
valve
Well
VE -1 D
valve
Well
VE -2S
valve
Well
VE -2D
valve
Well
VE -3S
valve
Well
VE -3D
valve
Well
VE -4
valve
Dilution
Air Valve
N
4/29/04
O
O
O
O
O
O
O
75%
4/30/04
O
O
O
O
O
O
O
0%
5/3/04
O
O
O
O
O
O
O
0%
5/4/04
O
O
O
O
O
O
O
0%
5/7/04
O
O
O
O
O
O
O
0%
5/10/04
O
O
O
O
O
O
O
0%
5/13/04
O
O
O
O
O
O
O
0%
5/17/04
O
O
O
O
O
O
O
0%
5/24/04
O
O
O
O
O
O
O
0%
6/1/04
O
O
C
O
O
O
O
0%
6/7/04
O
O
C
O
O
O
O
0%
6/14/04
O
O
C
O
O
O
O
0%
6/15/04
O
O
C
O
O
O
O
0%
6/21/04
O
O
C
O
O
O
O
0%
7/2/04
O
O
C
O
C
O
O
0%
7/6/04
O
O
C
O
C
O
O
0%
7/20/04
O
O
C
O
C
O
O
0%
7/26/04
O
O
C
C
C
O
O
0%
8/4/04
O
O
C
C
C
O
O
0%
8/10/04
O
O
C
C
C
O
O
0%
8/17/04
O
O
C
O
O
O
1/2
0%
8/24/04
O
O
C
1/2
1/2
O
1/4
0%
9/1/04
O
O
C
1/2
1/2
1/2
C
0%
9/3/04
O
O
C
1/2
1/2
1/2
C
0%
9/7/04
O
O
C
1/2
1/2
1/2
C
0%
9/13/04
O
O
C
1/2
1/2
1/2
C
0%
9/20/04
O
O
C
1/2
-1/2
1 /2
C
0%
9/27/04
O
1/2
C
1/2
1/2,
1/2
C
0%
10/4/04
1/2
1/2
C
1/2
1/2
112
C
0%
10/11/04
1/2
1/2
C
1/2
1/2
1/2
C
0%
10/18/04
1/2
1/2
C
1/2
1/2
1/2
C
0%
10/27/04
1/2
1/2
C
1/2
1/2
1/2
C
0%
11/1/04
1/2
1/2
C
1/2
1/2
1/2
C
0%
11/8/04
1/2
1/2
C
1/2
1/2
1/2
C
0%
11/15/04
1/2
112
C
1/2
1/2
1/2
C
0%
11/22/05
1/2
1/2
C
1/2
1/2
1/2
C
0%
11/29/04
1/2
1/2
C
1/2
1/2
1/2
C
0%
12/10/04
1/2
1/2
C
1/2
1/2
1/2
C
0%
12/17/04
1/2
1/2
1 C
1/2
1/2
1/2
C
0%
12/23/04
1/2
1/2
C
1/2
1/2
1/2
C
0%
12/28/04
1/2
1/2
C
1 1/2
1 1/2
1/2
1 C
0%
E2 C Remediation Table 48 -1
IProject Number 1803B K26 March 26, 2007
TABLE 4B
SUMMARY OF VES MONITORING DATA
MINIT STOP MARKET
2900 Union Avenue
Bakersfield, California
Date
Monitored
Well
VE -1 S
valve
Well
VE -1 D
valve
Well
VE -2S
valve
Well
VE -2D
valve
Well
VE -3S
valve
Well
VE -3D
valve
Well
VE -4
valve
Dilution
Air Valve
N
1/4/05
O
1/2
1/2
1/2
1/2
1/2
1/2
0%
1/14/05
O
1/2
1/2
1/2
1/2
1/2
1/2
0%
1/18/05
O
1/2
1/2
1/2
1/2
1/2
1/2
0%
1/24/05
O
1/2
1/2
1/2
1/2
1/2
1/2
0%
1/31/05
O
O
1/2
1/2
1/2
1/2
1/2
0%
2/11/05
O
O
1/2
1;2
1/2
1/2
1/2
0%
2/14/05
O
O
1/2
1/2
1/2
112
1/2
0%
2/21/05
O
O
C
C
C
C
1/2
0%
2/28/05
O
O
C
C
C
C
1/2
0%
3/7/05
O
O
C
C
C
C
1/2
0%
3/16/05
O
O
C
C
C
C
1/2
0%
3/21/05
O
O
C
C
C
C
1/2'
0%
3/28/05
O
O
C
C
C
C
1/2
0%
4/4/05
O
O
C
C
C
C
1/2
0%
4/13/05
O
O
C
C
C
C
1/2
0%
4/21/05
O
O
C
"C
C
C
1/2
0%
4/26/05
O
O
C
C
C
C
1/2
0%
5/2/05
O
O
C
C
C
C
1/2
0%
5/4/05
O
O
C
C
C
C
1/2
0%
5/16/05
O
O
C
C
C
C
1/2
0%
7/25/05
O
O
C
C
C
C
1/2
0%
7/29/05
O
O
C
C
C
C
1/2
0%
8/4/05
O
O
C
C
C
C
1/2
0%
8/12/05
O
PO
C
C
C
C
1/2
0%
8/19/05
O
PO
C
C
C
C
1/2
0%
8/24/05
O
PO
C
C
C
C
1/2
0%
8/31/05
O
PO
C
C
C
C
1/2
0%
9/7/05
O
PO
C
C
C
C
1/2
0%
9/7/05
O
PO
C
C
C
C
1/2
0%
9/26/05
O
O
C
C
C
C
1/2
0%
10/3/05
O
O
C
C
PO
C
1/2
0%
10/17/05
O
O
C
C
PO
C
1/2
0%
10/26/05
10/31/05
O
O
C
C
PO
C
1/2
0%
11/7/05
O
O
C
C
PO
C
1/2
0%
11/14/05
O
O
PO
C
PO
C
1/2
0%
11/22/05
PO
PO
PO
PO
PO
PO
1/2
0%
11/28/05
12/5/05
12/12/05
O
O
PO
PO
PO
PO
1/2
0%
1/24/06
O
O
PO
PO
PO
PO
1/2
0%
EZ C Remediation Table 4B -2
Project Number 1803BK26 March 26, 2007
TABLE 4B
SUMMARY OF VES MONITORING DATA
MINIT STOP MARKET
2900 Union Avenue
Bakersfield, California
Date
Monitored
Well
VE -1 S
valve
Well
VE -1 D
valve
. Well
VE -2S
valve
Well
VE -2D
valve
Well
VE -3S
valve
Well
VE -3D
valve
Well
VE -4
valve
Dilution
Air Valve
N
1/31/06
0
0
PO
PO
PO
PO
1/2
0%
217/06
O
O
PO
PO
PO
PO
1/2
0%
2/13/06
0
0
PO
PO
PO
PO
1/2
0%
2/20/06
0
O
PO
PO
PO
PO
1/2
0%
2/27/06
3/6/06
0
0
PO
PO
PO
PO
1/2
0%
3/7/06
O
0
C
C
C
C
1/2
0%
3/13/06
3/20/06
3/27/06
4/3/06
4/20/06
0
0
PO
PO
PO
PO
1 /2
0%
4/25/06.
O
0
PO
PO
PO
PO
1/2
0%
5/5/06
0
0
PO
PO
PO
PO
1/2
0%
5/8/06
0
O
PO
PO
PO
PO
1/2
0%
5/22/06
O
0
PO
PO
PO
PO
1/2
0%
6/1/06
0
0
PO
PO
PO
PO
1/2
0%
6/6/06
O
0
PO
PO
PO
PO
1/2
0%
6/12/06
0
0
PO
PO
PO
PO
1/2
0%
6/23/06
PO
PO
PO
PO
PO
PO
1/2
0%
6/27/06
PO
PO
PO
PO
PO
PO
1/2
0%
7/3/06
PO
PO
PO
PO
PO
PO
1/2
0%
7/12/06
PO
PO
PO
PO
PO
PO
1/2
0%
7/17/06
PO
PO
PO
PO
PO
PO
1/2
0%
7/24/06
PO
PO
PO
PO
PO
PO
1/2
0%
8/2/06
PO
PO
PO
PO
PO
PO
1/2
0%
open = 0; partially open = PO; closed = C
E2 C Remediation Table 4B -3
IProject Number 1803BK26
March 26, 2007
TABLE 5
SUMMARY OF HYDROCARBON MASS REMOVED USING VE/GASS
(based on influent concentrations)
MINIT STOP MARKET
2900 Union Avenue
Bakersfield, California
Date
month! ear
HC Removed
Ibs/month)
Cumulative HC
Removed
(Ibs)
Influent
Concentration
(ppmy
Flow Rate
scfm
Actual Run
Time
(days)
Daily Removal
Rate
Ibs/da
Apr -04
6,730
6,730
50,000
275
1.5
4,487
May -04
85,407
92,138
31,490
268
31.0
2,755
Jun -04
17,455
109,593
7,348
243
30.0
582
Jul -04
12,296
121,889
-5,632
216
31.0
397
Aug -04
8,623
130,512
4,764
213
26.0
332
Sep -04
9,171
139,683
4,639
202
30.0
306
Oct -04
5,340
145,022
2,993
195
28.0
191
Nov -04
4,103
149,126
2,238
187
30.0
137
Dec -04
1,095
150,220
1,835
152
12.0
91
Jan -05
1,751
151,972
1,450
206
18.0
97
Feb -05
2,650
154,622
3,100
185
14.2
187
Mar -05
4,212
158,834
3,800
186
18.3
230
Apr -05
3,228
162,062
2,400
182
22.6
143
May -05
2,846
164,908
2,400
182
20.0
142
Jun -05
Jul -05
836
165,744
2,400
178
6.0
139
Aug =05
8,745
174,489
5,100
170
31.0
282
Sep -05
1,446
175,935
3,625
175
7.0
207
Oct -05
856
175,345
1,701
193
8.0
107
Nov -05
580
175,925
1,589
187
6.0
97
Dec -05
0
175,925
1,413
181
0.0
0
Jan -06
421
176,347
1,000
185
7.0
60
Feb -06
319
176,666
715
190
7.2
44
Mar -06
39
176,705
430
200
1.4
28
Apr -06
1,761
178,466
2,100
257
10.0
176
May -06
649
179,115
840
215
11.0
59
Jun -06
895
180,010
505
181
30.0
30
Jul -06
980
180,990
600
185
27.0
36
Aug -06
0
180,990
600
222
0.0
0
Where: Hydrocarbons Removed (Ibs /month) = Influent Concentration (ppmv) X 10 -6 X Influent Flow Rate (scfm)
X 1 lb-mole/379.5 ft3 X 86 (Ib/Ib -mole ) X 1440 (min/day) X Run Time (days/month)
E2 C Remediation
Table 5 -1
IProject Number 1803BK26
L
TABLE 5
SUMMARY OF HYDROCARBON MASS REMOVED USING VE/GASS
(based on influent concentrations)
MINIT STOP MARKET
2900 Union Avenue
Bakersfield, California
FUEL HYDROCARBON MASS REMOVED TRENDS
March 26, 2007
4,500
4,000 ------------------------------ - - - - -- UMSeriesl .............
3,500 ---------------- ----------- - - - - -- ---- .. - - --
3,000 ------ ----------------- ---- - - - - -- �.2 per. Mov. Avg. ----- - - - - --
.__ 2,500 ------------------------- - - - - -- (Seriesl) ----- - - - - --
y2,000 ---------------------------------- ----------------------- .... - --
E1,500 - --------------------------------- ----------------------- --------
1,000 -- ----------------------------------------------------------------
500 ---
500
0
N Dx N Dx DK 5 5 5 h 5 �o
,O ,O ,O ,O ,O ,O ,O O ,O ,O ,O ,O ,O ,O ,O
PQt �J� PJO' �G� oe� �e� P�� 13_1111-, pro, �J- P,4
Month -Year
E2 G Remediation
Table 5 -2
200,000
90,000
80,000
150,000 ----- - - - - -- - ----------------------------- - - - - --
60,000 L �
'
100,000 -- - - - - -- -- --------------------------------- - - - - --
50,000
40,000
'
E50,000
-- ----------------------------------------------- - - - - --
30,000 19
20 000
0
10,000
D a h h h 5 ro ro �o ro
0 0 0 0 0 0 0 0 0 0 0 0 . 0 0 0 0 0 0 0 0 00 00 z z 00
'1. `L `L `L `L `L
��ti ��ti l�ti ��ti ��`l.
rl,\
O\ q\ ti1 p�\ � �� O\ I\
1 -
— 0 total in Ibs Month -Year
--*-- lbs /month
FUEL HYDROCARBON MASS REMOVED
(Ibs /month)
4,500
4,000 ------------------------------ - - - - -- UMSeriesl .............
3,500 ---------------- ----------- - - - - -- ---- .. - - --
3,000 ------ ----------------- ---- - - - - -- �.2 per. Mov. Avg. ----- - - - - --
.__ 2,500 ------------------------- - - - - -- (Seriesl) ----- - - - - --
y2,000 ---------------------------------- ----------------------- .... - --
E1,500 - --------------------------------- ----------------------- --------
1,000 -- ----------------------------------------------------------------
500 ---
500
0
N Dx N Dx DK 5 5 5 h 5 �o
,O ,O ,O ,O ,O ,O ,O O ,O ,O ,O ,O ,O ,O ,O
PQt �J� PJO' �G� oe� �e� P�� 13_1111-, pro, �J- P,4
Month -Year
E2 G Remediation
Table 5 -2
i
1
Project Number 1803BK40
March 26, 2007
E2 Remediation Table 6 -1
TABLE 6
SUMMARY OF INFLUENT VAPOR ANALYTICAL DATA
MINIT STOP MARKET
2900 Union Avenue
Bakersfield California
`
B
%
Date
...
......... ........ .....T ......... .......... .......... ............TOTAL
................ . . ..............F...I.D
... ..........
(pp mV)
mV
mV
Difference
01/31/05
1,747
7
7
70
42
34
1,900
1,300
46.15
02/14/05
840
6
ND
50
40
70
1,000
2,600
-61.54
03/07/05
4,937
20
ND
83
63
117
5,200
3,150
65.08
04/26/05
2,221
2
23
58
54
44
2,400
1,800
33.33
05/09/05
2,270
12
9.1
51
34
36
2,400
1,550
54.84
08/31/05
4,580
50
60
150
80
130
5,000
3,300
51.52
09/26/05
4,770
43
60
180
50
140
5,200
5,300 _
-1.89
10/17/05
1,907
7
18
33
50
42
2,050
11/22/05
1,209
5
15
36
50
42
1,352
12/12/05
1,659
9
24
31
52
59
1,825
01/24/06
918
3
9
12
28
33
1,000
03/07/06
348
ND
ND
20
34
28
430
512
-16.02
04/25/06
1,909
15
28
35
61
52
2,100
1,600
31.25
05/22/06
755
ND
10
22
38
15
840
800
5.00
06/27/06
367
ND
4
10
19
10
410
1,100
-62.73
07/24/06
530
ND
9
12
22
27
600
650
-7.69
Averacie
1,935
1 15
1 21
1 53
1 45
1 55
1
1
11.44
TOTAL
TOTAL
Total 30,967
179
1 276 853 1 717 879
1 33,707
23,662
r = Not analyzed
nd = Not detected at or above the method detection limit
ppmv = Parts per million by volume
PHg analysis method includes BTEX and ME
SUMMARY OF TEDLAR BAG INFLUENT
CONCENTRATIONS
6,000
> I
I I
I I I I I I I I I
I I
I I I
I I
I
I
I
I
I 1
I
I
I
a 5,000 --- -I - -
-r -- r--
r--- r--- I- - -� - -- -- I---- I--- r--- r---
I--- r--
�--- r--- r-
-� - - -�
Q I
I I
I I I I I I I I
I I
I I I
I I
C
.� 4,000 -- - -I - --
-- ---
-t--- r - - -I -- �-- -r - - -I --- I--- r--- r--
-�--- r--
�--- r--- r--
-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 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
.+ 3,000 - - -
I
I I
- -- --- I- ---- -r - - -r - 1--- r---------
I I I I I I I I I
r----- r -- -r --
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
2,000
_ _ _ * _ _ _I_
_ _
W 1
I I
I I I I 1 I I
I I
I 1 I
I I
V I
1
I I I 1 1
I
I
I I
O
I I
I 1 I I
I 1
I
I
I I I
I I
1
I
1 I
I I
f I 1 I I I I
I I I I 1 I I I I
I
I I
I I I
I
>,��� '`00 `01 >`�� ��� �0D `�Ip �\& '`\& �xdl X03 \� X00 \do \X6 �\6 �X6 \� X00
^ \0 ^ \O
,v
�\O
\O �\O
O �\O
Q�\O O
d�
Q�\O
Month /DayYear
E2 Remediation Table 6 -1
IProject Number 1803BK26 March 26, 2007
E2 Remediation Table 7 -1
TABLE 7
SUMMARY OF EFFLUENT VAPOR ANALYTICAL DATA
MINIT STOP MARKET
2900 Union Avenue
Bakersfield, California
Date
TPH /G
MtBE
.............B
...............
............. E ..............
X
TOTAL
01/31/05
1.50
0.00
0.00
0.00
0.12
0.10
1.72
02/14/05
0.40
0.00
0.00
0.00
0.00
0.00
0.40
03/07/05
2.80
0.00
0.00
0.02
0.00
0.00
2.82
04/26/05
0.60
0.00
0.00
1.02
0.00
0.00
1.62
05/09/05
0.40
0.00
0.00
0.00
0.00
0.00
0.40
08/31/05
4.40
0.00
0.80
0.50
0.00
0.50
6.20
09/26/05
0.10
0.00
0.00
0.00
0.00
0.00
0.10
10/17/05
0.10
0.00
0.00
0.00
0.00
0.00
0.10
11/22/05
0.10
0.00
0.00
0.00
0.00
0.00
0.10
12/12/05
0.10
0.00
0.00
0.00
0.00
0.00
0.10
03/07/06
0.00
0.00
0.00
0.00
0.00
0.00
0.00
04/25/06
0.00
0.00
0.00
0.00
0.00
0.00
0.00
05/22/06
0.00
0.00
0.00
0.00
0.00
0.00
0.00
06/27/06
0.00
0.00
0.00
0.00
0.00
0.00
0.00
07/24/06
0.00
0.00
0.00
0.00
0.00
0.00
0.00
Average
0.95
0.00
0.07
0.14
0.01
0.05 !
1.23
!
TOTAL
Total
10.50
0.00
0.80 1.54
012
0.60 I
13.56
Notes:
na = Not analyzed
nd = Not detected at or above the method detection limit
ppmv = Parts per million by volume
E2 Remediation Table 7 -1
Protect Number 18038K26 _March 26.2007
APPENDICES
Appendix A First Quarter 2007 Groundwater Purge Data Sheets
Appendix B First Quarter 2007 Groundwater Analytical Laboratory
Report and Chain -of- Custody
Appendix C GeoTracker Upload Reports
EzC Remediation Appendices
IProiect Number 1803BK26 March 26, 2007
Ul
11
u
APPENDIX A
First Quarter 2007 Groundwater Purge Data Sheets
E2C Remediation Appendix A
E2C Remediation -,
Groundwater Scientists : Environmental Consultants
5300 Woodmere Drive, Suite 105; Bakersfield, California 93313
Telephone: (661) 831 -6906 / Facsimile: (661) 831 -6234
Water Quality Sampling Record
and Well Development Data
SAMPLE ID / WELL #: M Vv" - I DEPTH TO WATER: t)
EZC REM. PROJECT;: I iL) TOTAL DEPTH OF WELL: I �'j ILA t
PROJECT NAME: vl , ,StD0 WELL DIAMETER; 7
n �
DATE SAMPLED: R ((,•• L= CASING VOLUME: _6 ZZ
SAMPLED BY: ;\ PURGE METHOD: . i
-v-�s
TIME
PURGE CHARACTERISTICS
TEMP
(F`')
pH
(UNITS)
SEC
(mmhos/cm)
REMARKS
(COLOR, TURBIDITY, ETC.)
INTAKE
DEPTH
RATE
(GPM)
CUM. VOL
(GAL)
WELL VOL
PUMPED
�E ,2
S
(5.L
/ 7
E ?q
ov •2.
zi
M
r
Well Capacity: 2" - 0.1632 gallonAnear foot
4" - 0.6528 gallon/linear foot
S' - 1.4688 gallonflinear foot
SAMPLED X r t FT. FINAL DEPTH TO WATER: `?� , � FT. 3 CASING VOLUMES (a GALS.
1
NOTES:
1
E2C Remediation
Groundwater Scientists : Environmental Consultants
5300 Woodmere Drive, Suite 105; Bakersfield, California 9331.3
Telephone: (661) 831 -6906 / Facsimile: (661) 831 -6234
Water Quality Sampling Record
and Well Development Data
SAMPLE ID / WELL;€: nAVJ -Z
E2C REM. PROJECT #: �� _
PROJECT NAME:
DATE SAMPLED: �—( �� (J
SAMPLED BY: Ap L<e—
DEPTH TO WATER:
TOTAL DEPTH OF WELL:
WELL DIAMETER;
CASING VOLUME:
PURGE METHOD:
-33
Z r
?j
All l t t
TIME
PURGE CHARACTERISTICS
TEMP
(F")
pH
(UNITS)
SEC
(mmhoslcm)
REMARKS
(COLOR, TURBIDITY, ETC.)
INTAKE
DEPTH
RATE
(GPM)
CUM. VOL
(GAL)
WELL VOL
PUMPED
Icy
,C16-
,7,Z
c! ` r evr
r;a1r
ll.,
r
Well Capacity: 2" - 0.1632 gallon/linearfoot
4"- 0.6528 gallon/Gnearfoot
6° - 1.4688 gallon/Iinear foot
SAMPLED A', i �i Sr Fr. FINAL DEPTH TO WATER: Ff. 3 CASING VOLUMES = I , Gt `T GALS.
NOTES:
E2C Remedsation :
Groundwater Scientists : Environmental Consultants
5300 Woodmere Drive, Suite 105; Bakersfield, California 93313
Telephone: (661) 831 -6906 / Facsimile: (661) 831 76234
Water Quality Sampling Record
and Well Development Data
SAMPLE ID /WELL R: rb` L.T
EZC REM. PROJECT #:
PROJECT NAME:
DATE SAMPLED: —t[, ° tD "%
SAMPLED BY: a
DEPTH TO WATER:
TOTAL DEPTH OF WELL:
WELL DIAMETER;
CASING VOLUME:
PURGE METHOD:
7 M
%
C <,�i, IBC"
TIME
PURGE CHARACTERISTICS
TEMP
(F�
PH
(UNITS)
SEC
(mmhct/cm)
REMARKS
(COLOR, TURBIDITY, ETC.)
INTAKE
DEPTH -
RATE
(GPM)
CUM. VOL
(GAL)
WELL VOL
PUMPED
7
1
/ y
4 5 T8✓l C3 �C'r
Well Capacity: 2'- 0.1632 gallon /linear foot
4'- 0.6528 gauonNnear toot
6'- 1.4688 gallon/Unear foot
SAMPLED A' Z 0' r FT. FINAL DEPTH TO WATER: I (ry 3 FT. 3 CASING VOLUMES = b 9 1 GALS.
NOTES: MLj - � 'e ; +V\P_ b %j32 %'� IC'$-£- to = tv\ U-� - Z
FA
E2C -Reme : afion
Groundwater Scientists : Environmental Consultants
5300 Woodmere Drive, Suite 105; Bakersfield, Califomia 93313
Telephone: (661) 831 -6906 / Facsimile: (661) 831 -6234
Water Quality Sampling Record
and Well Development Data
SAMPLE ID [WELL.':
E2C REM. PROJECT' :
PROJECT NAME:
DATE SAMPLED:
SAMPLED BY:
rn (� '
L :3
VYI FYI 6 +0(2
�- L L - (� `7
�� p� i s
DEPTH TO WATER:
TOTAL DEPTH OF WELL:
WELL DIAMETER;
CASING VOLUME:
PURGE METHOD:
13 5. 05
7 ��
S
) I—
TIME
PURGE CHARACTERISTICS
TEMP
(F")
pH
(UNITS)
SEC
(mmhos/cm)
REMARKS
(COLOR, TURBIDITY, ETC.)
WTAKE
DEPTH
RATE
(GPM)
CUM. VOL
(GAL)
WEI I VOL
PUMPED
4b;S�F
, -7
eA lt�j L, )o
1I6
L
C�.0
PIZ
L7
420 1
A
10.i
Well Capacity:
2'- 0.1632 galloMinear foot
4° - 0.6528 gallon/Gnear foot
6'- 1.4688 gallon/linear foot
14 .-
SAMPLED A' FT. FINAL DEPTH TO WATER: ' j � . � � FT. 3 CASING VOLUMES = � + � � GALS.
' NOTES:
u
11
Groundwater Scientists : Environmental Consultants
5300 Woodmere_Drive, Suite 105; Bakersfield, California 93313
Telephone: (661) 831 -6906 / Facsimile: (661) 831 -0" "234
Water-Quality Sampling Record
and Well Development Data
SAMPLE ID /WELL �: �� CJ - ��
EZC REM. PROJECT.':. C✓ �L 3
PROJECT NAME: r�i i.., , � j -jon -
DATE SAMPLED: 0_7
SAMPLED BY: ke
DEPTH TO WATER:
TOTAL DEPTH OF WELL:
WELL DIAMETER;
CASING VOLUME:
PURGE METHOD:
135 0 0
TIME
PURGE CHARACTERISTICS
TEMP
(F°)
pH
(UNITS)
SEC
(mmhos/cm)
REMARKS
(COLOR, TURBIDITY, ETC.)
NTAKE
DEPTH
RATE
(GPM)
CUM. VOL
(GAL)
WELL VOL
PUMPED
Z
K
` l ej;,Xjj G cs or
,:4
jL
if lt+eod w odor
Well Capacity: 2'- 4.1632 gauonAinear foot
4' - 0.6528 gaflonAlnear foot
6*- 1.4688 gaflon inear foot
SAMPLED A' IZ Y FT. FINAL DEPTH TO WATER: FT.' 3 CASING VOLUMES = of GALS.
NOTES:
Proiect Number 1803BK26 March 26, 2007
APPENDIX B
First Quarter 2007 Groundwater Analytical Laboratory Report
and Chain of Custody
Remediation Appendix B
TRMIEF�PAi WYMA"EAMRATORIF-Sm m m m "MaMf MMOT Frrrh
Client Name: L t _` ., i ,, ..�
Analysis Requested
Sample Matrix
Projec:N Name: , -� t T
Relinquished By: Date:
Received By-
_�
s
o
o
N
a
0
N
co
�
Aqueous
Client Address: 5300 Woodmere Dr. Suite 105 Bakersfield, CA
y
CD
N
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of
41
N
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d
w
d
W
p
(D
Soil
Project Manager. �. „. I
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Sampler Name: `�
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—
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d
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Sample Date
Sample Time
Sample Description and Container Type
C0
>
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Comments
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d1 W 1 Z :>
�`�� '�''%
�. '�
'raw -� Z v:. •.y
X
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Sampling Event: 1 5� ( ���lil,rt 0 '7 EDF Type:GW Monitoring Other
I Turnaround Time Requested: 24 Hour 48 Hour 5 -Day Standard X I
Relinquished By:
�/ VLZ`7 t�
Date: �., -O-L
Relinquished By: Date:
Received By-
Date:
Received By: Date:
PROVERA ANALYTICAL LABORATORIES Chain of Custody Form
Client Name: 2 6 icy, /n e eiq
Analysis Requested
_
Sample Matrix
Project Name: rvl V, \
0
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Soil
Client Address: 5300 Woodmere Dr. Suite 105 Bakersfield, CA
Project Manager: /
�, lil n, t v. .1
� Acidified
Sampler Name: J k
Sample Date
Sample Time
Sample Description and Container Type
Comments
I- G -
- 7.'5'a
Trow 1CwAk l
X
)(
X
�)gIVS -o0l
:
t, zv
X
-002
X
X
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Sampling Event: 1
cql /JIB a - ?,
EDF Type:GW Monitoring k' Other
I Turnaround Time Requested: 24 Hour 48 Hour, 5 -Day Standard _ X I
Relinquished By:
Date: - -ca,
Relinquished By: Date:
Received By:
Date: b -0 �-
Received By: Date:
Laboratory Report
Certification # 2606
CLIENT: E2C Remediation
5300 Woodmere Drive, Suite 105
Bakersfield, CA 93313
TESTS: TPH Gas by EPA 8015M
_i -J.
ProVera +'
Analytical Laboratories, hic.
Project Name: Minit Stop
Matrix: Aqueous
Sampled by: J. Irwin
TPH g Analysis: 1/16/2007
Date of Report: 1/22/2007
Units: ug/l
Sample #:
9145 -001
9145 -004
9145 -003
9145 -002
Date Sampled:
1/16/2007
1/16/2007
1/16/2007
1/16/2007
DL ug/l
Sample Description:
Travel Blank
MW -2
MW4
MW -5
TPH Gasoline
ND
ND
ND
ND
50
Surrogate Recover %
94 90 96 94
Sample #:
9145 -005
9145 -006
9145 -007
Date Sampled:
1/16/2007
DL ug/l
1/16/2007
1/16/2007
DL ug/l
Sample Description:
MW -1
MW -3
MW -6
TPH Gasoline
6,300
500
44,000
44,000
5000
Sprro ate Recovery %
93
8 95
DL = Detection Limit
ND - Non - Detect at given DL
na yst: Alexander Candia
5221 Woodmere Drive, Bakersfield, CA 93313
Phone: (661) 827 -5240 Fax: (661)827 -5244
ij
i
ProVera��
Analytical Laboratories, Inc.
Certification # 2606
CLIENT:
EZC Remediation
Methyl Tert-Butyl Ether (MTBE)
5300 Woodmere Drive, Suite 105
Diisopropyl Ether (DIPE)
Bakersfield, CA 93313
Project ID :
Minit Stop
Analysis Type:
EPA Method 8260B
Analysis Date:
1/18/2007
Report Date :
112212007
Sample ID :
9145 -001 Travel Blank
Analyte Result
5 Oxygenates
t- Butanol (TBA) Tert-Butyl Alcohol
ND
Methyl Tert-Butyl Ether (MTBE)
ND
Diisopropyl Ether (DIPE)
ND
Ethyl Tert-Butyl Ether (ETBE)
ND
Tert-Amyl Methyl Ether (TAME)
ND
STEX Components
100%
Benzene
ND
Toluene
ND
Ethylbenzene
ND
m , p & o Xylenes
ND
Lead Scavengers
Method RL
Multiplication
Units Method RL Factor
ug/L
2.5 1
ug/L
0.5 1
ug /L
0.5 l
ug /L
0.5 1
ug/L
0.5 1
ug/L 0.5 1
ug/L 0.5 1
ug/L 0.5 1
ug/L 0.5 1
1,2 Dichloro ethane (1,2 DCA)
ND
ug /L
1,2 Dibromo ethane (EDB)
ND
ug /L
Internal Standards
Results
% Recovery
Benzene, fluoro
50
100%
Benzene -d5, chloro-
50
100%
1,4- Dichlorobenzene -d4
50
100%
Surrogate Standards
Methane, dibromofluoro- 46 92%
1,2- Dichloroethane -d4 47 94%
Toluene -d8 51 102%
p- Bromo4u0r4enzene1BFB) 46 92%
Princijlal Analyst: AlExander Candia
0.5 1
0.5 1
5221 Woodmere Drive, Bakersfield, CA 93313
Phone: (661) 827 -5240 Fax: (661)827 -5244
i
ProVera r' `, +`
Analytical Laboratories, In.c.
Certification # 2606
CLIENT:
E2C Remediation
Methyl Tert-Butyl Ether (MTBE)
5300 Woodmere Drive, Suite 105
Diisopropyl Ether (DIPE)
Bakersfield, CA 93313
Project 1D :
Minit Stop
Analysis Type:
EPA Method 82608
Analysis Date:
1/18/2007
Report Date :
1/22/2007
Sample ID:
9145 -005 MW -1
Analyte Result
5 Oxygenates
t- Butanol (TBA) Tert-Butyl Alcohol
ND
Methyl Tert-Butyl Ether (MTBE)
ND
Diisopropyl Ether (DIPE)
ND
Ethyl Tert-Butyl Ether (ETBE)
ND
Tert-Amyl Methyl Ether (TAME)
ND
BTEX Components
100%
Benzene
5.5
Toluene
2.8
Ethylbenzene
2.8
m, p & o Xylenes
12
Lead Scavengers
Method RL
Multiplication
Units Method RL Factor
ug/L
2.5 1
ug/L
0.5 1
ug/L
0.5 I
ug/L
0.5 1
ug/L
0.5 1 .
ug/L 0.5 1
ug/L 0.5 1
ug /L 0.5 1
ug /L 0.5 1
1,2 Dichloro ethane (1,2 DCA)
ND
ug /L
1,2 Dibromo ethane (EDB)
ND
ug/L
Internal Standards
Results
% Recovery
Benzene, fluoro
50
100%
Benzene -d5, chloro-
50
100%
1,4- Dichlorobenzene -d4
50
100%
Surrogate Standards
Methane, dibromofluoro- 50 100%
1,2- Dichloroethane -d4 50 100%
Toluene -d8 52 104%
p- BromoquWbenz�pne (BFB) 49 98%
Principal Analyst: Alexander Candia
0.5 1
0.5 1
5221 Woodmere Drive, Bakersfield, CA 93313
Phone: (661) 827 -5240 Fax: (661)827 -5244
I
i
Provera i
Analytical Laboratories, Inc.
Certification # 2606
CLIENT:
EZC Remediation
Methyl Tert-Butyl Ether (MTBE)
5300 Woodmere Drive, Suite 105
Diisopropyl Ether (DIPE)
Bakersfield, CA 93313
Project ID :
Minit Stop
Analysis Type:
EPA Method 82608
Analysis Date:
1/18/2007
Report Date :
1/22/2007
Sample ID :
9145 -004 MW -2
Analyte Result
5 Oxygenates
t- Butanol (TBA) Tert-Butyl Alcohol
ND
Methyl Tert-Butyl Ether (MTBE)
ND
Diisopropyl Ether (DIPE)
ND
Ethyl Tert-Butyl Ether (ETBE)
ND
Tert-Amyl Methyl Ether (TAME)
ND
BTEX Components
100%
Benzene
ND
Toluene
ND
Ethylbenzene
ND
m , p & o Xylenes
ND
Lead Scavengers
Method RL
Multiplication
Units Method RL Factor
ug /L
2.5 1
ug /L
0.5 I
ug /L
0.5 1
ug /L
0.5 1
ug/L
0.5 1
ug /L 0.5 1
ug/L 0.5 1
ug /L 0.5 1
ug/L 0.5 1
1,2 Dichloro ethane (1,2 DCA)
ND
ug/L
1,2 Dibromo ethane (EDB)
ND
ug/L
Internal Standards
Results
% Recovery
Benzene, fluoro
50
100%
Benzene -d5, chloro-
50
100%
1,4- Dichlorobenzene -d4
50
100%
Surrogate Standards
Methane, dibromofluoro- 48 96%
1,2- Dichloroethane -d4 48 96%
Toluene -d8 51 102%
p- Bromc*ug,robenzene (BFB) 47 94%
Principal Analyst: Alexander Candia
0.5 I
0.5 1
5221 Woodmere Drive, Bakersfield, CA 93313
Phone: (661) 827 -5240 Fax: (661)827 -5244
�I
Provera
Analytical Laboratories, Inc.
Certification # 2606
CLIENT:
E2C Remediation
Methyl Tert-Butyl Ether (MTBE)
5300 Woodmere Drive, Suite 105
Diisopropyl Ether (DIPE)
Bakersfield, CA 93313
Project ID :
Minit Stop
Analysis Type:
EPA Method 8260B
Analysis Date:
1/18/2007
Report Date :
1/22/2007
Sample ID :
9145 -006 MW -3
Analyte Result
5 Oxygenates
t- Butanol (TBA) Tert-Butyl Alcohol
ND
Methyl Tert-Butyl Ether (MTBE)
ND
Diisopropyl Ether (DIPE)
ND
Ethyl Tert-Butyl Ether (ETBE)
ND
Tert-Amyl Methyl Ether (TAME)
ND
BTEX Components
0.5 1
Benzene
18
Toluene
320
Ethylbenzene
250
m , p & o Xylenes
1,500
Lead Scavengers
Method RL
Multiplication
Units Method RL Factor
ug/L
2.5 1
ug/L
0.5 1
ug /L
0.5 1
ug/L
0.5 1
ug/L
0.5 1
ug /L
0.5 1
ug/L
10 20
ug/L
10 20
ug/L
25 50
1,2 Dichloro ethane (1,2 DCA)
ND
ug/L
1,2 Dibromo ethane (EDB)
ND
ug/L
Internal Standards
Results
% Recovery
Benzene, fluoro
50
100%
Benzene -d5, chloro-
50
100%
1,4- Dichlo robe nzene -d4
50
100%
Surrogate Standards
Methane, dibromofluoro- 51 102%
1,2- Dichloroethane -d4 55 110%
Toluene -d8 48 96%
p- Bromgfluprobenzene (BFB) 51 102%
Prinlipal Analyst: Alexander Candia
0.5 1
0.5 1
5221 Woodmere Drive, Bakersfield, CA 93313
Phone: (661) 827 -5240 Fax: (661)827 -5244
x
ProVera +-
Analytical Laboratories, Inc.
Certification # 2606
CLIENT:
E2C Remediation
Methyl Tert-Butyl Ether (MTBE)
5300 Woodmere Drive, Suite 105
Diisopropyl Ether (DIPE)
Bakersfield, CA 93313
Project ID :
Minit Stop
Analysis Type:
EPA Method 8260B
Analysis Date:
1/1812007
Report Date :
1/2212007
Sample TD:
9145 -003 MW -4
Analyte Result
5 Oxygenates
t- Butanol (TBA) Tert-Butyl Alcohol
ND
Methyl Tert-Butyl Ether (MTBE)
ND
Diisopropyl Ether (DIPE)
ND
Ethyl Tert-Butyl Ether (ETBE)
ND
Tert-Amyl Methyl Ether (TAME)
ND
BTEX Components
100%
Benzene
ND
Toluene
ND
Ethylbenzene
ND
m , p & o Xylenes
ND
Lead Scavengers
Method RL
Multiplication
Units Method RL Factor
ug/L
2.5 1
ug/L
0.5 1
ug /L
0.5 I
ug /L
0.5 1
ug /L
0.5 1
ug/L 0.5 1
ug/L 0.5 1
ug/L 0.5 1
ug/L 0.5 1
1,2 Dichloro ethane (1,2 DCA)
ND
ug /L
1,2 Dibromo ethane (EDB)
ND
ug/L
Internal Standards
Results
% Recovery
Benzene, fluoro
50
100%
Benzene -d5, chloro-
50
100%
1,4- Dichlorobenzene -d4
50
100%
Surrogate Standards
Methane, dibromofluoro- 46 92%
1,2- Dichloroethane -d4 47 94%
Toluene -d8 n ,51 102%
p- Brompfluprobenzene (BFB) J' 1 48 96%
pal Analyst: Alexander Candi
0.5 1
0.5 1
5221 Woodmere Drive, Bakersfield, CA 93313
Phone: (661) 827 -5240 Fax: (661)827 -5244
I I
P roue ra r; -
Analytical Laboratories, In.c.
Certification # 2606
CLIENT:
E2C Remediation
Methyl Tert-Butyl Ether (MTBE)
5300 Woodmere Drive, Suite 105
Diisopropyl Ether (DIPE)
Bakersfield, CA 93313
Project ID :
Minit Stop
Analysis Type:
EPA Method 82608
Analysis Date:
1/18/2607
Report Date :
1/22/2007
Sample ID:
9145 -002 MW -5
Analyte Result
5 Oxygenates
t- Butanol (TBA) Tert-Butyl Alcohol
ND
Methyl Tert-Butyl Ether (MTBE)
ND
Diisopropyl Ether (DIPE)
ND
Ethyl Tert-Butyl Ether (ETBE)
ND
Tert-Amyl Methyl Ether (TAME)
ND
BTEX Components
100%
Benzene
ND
Toluene
ND
Ethylbenzene
ND
m, p & o Xylenes
ND
Lead Scavengers
Method RL
Multiplication
Units Method RL Factor
ug /L
2.5 1
ug/L
0.5 1
ug/L
0.5 1
ug /L
0.5 1
ug/L
0.5 1
ug /L 0.5 1
ug/L 0.5 1
ug/L 0.5 1
ug/L 0.5 1
1,2 Dichloro ethane (1,2 DCA)
ND
ug /L
1,2 Dibromo ethane (EDB)
ND
ug/L
Internal Standards
Results
% Recovery
Benzene, fluoro
50
100%
Benzene -d5, chloro-
50
100%
1,4- Dichlorobenzene -d4
50
100%
Surrogate Standards
Methane, dibromofluoro- 47 94%
1,2- Dichloroethane -d4 49 98%
Toluene -d8 ^ 49 98%
p- BromobuWbenzQne (BFB) / 1 52 104%
Principal Analyst: Alexander Candia
0.5 1
0.5 1
5221 Woodmere Drive, Bakersfield, CA 93313
Phone: (661) 827 -5240 Fax: (661)827 -5244
-f
ProVera
Analytical Laboratories, Inc.
Certification # 2606
CLIENT: E2C Remediation
5300 Woodmere Drive, Suite 105
Bakersfield, CA 93313 -
Project ID : Minit Stop
Analysis Type: EPA Method 8260B
Analysis Date: 1/18/2007
Report Date : 112212007
Sample ID: 9145 -007 MW -6
Analyte Result
5 Oxygenates
t- Butanol (TBA) Tert-Butyl Alcohol
ND
Methyl Tert-Butyl Ether (MTBE)
ND
Diisopropyl Ether (DIPE)
ND
Ethyl Tert-Butyl Ether (ETBE)
ND
Tert-Amyl Methyl Ether (TAME)
ND
BTEX Components
100%
Benzene
18
Toluene
320
Ethylbenzene
250
m, p & o Xylenes
1,500
Lead Scavengers
Method RL
Multiplication
Units Method RL Factor
ug/L
2.5 1
ug /L
0.5 1
ug /L
0.5 1
ug/L
0.5 1
ug /L
0.5 1
ug/L 0.5 1
ug/L 10 20
ug /L 10 20
ug /L 25 50
1,2 Dichloro ethane (1,2 DCA)
ND
ug/L
1,2 Dibromo ethane (EDB)
ND
ug/L
Internal Standards
Results
% Recovery
Benzene, fluoro
50
100%
Benzene -d5, chloro-
50
100%
1,4- Dichlorobenzene -d4
50
100%
Surrogate Standards
Methane, dibromofluoro- '47 94%
1,2- Dichloroethane -d4 52 104%
Toluene -d8 49 98%
p -Bro fl orobenzene (BFB) 48 96%
Pri ipal Analyst: A4exander Candia
0.5 1
0.5 1
5221 Woodmere Drive, Bakersfield, CA 93313
Phone: (661) 827 -5240 Fax: (661)827 -5244
i
ProVera
Analtltical Laboratories, In.c.
EPA 82608 QA-QC Report
EPA 8015M QA -QC Report
Certification # 2606
CLIENT: E2C Remediation
5300 Woodmere Drive, Suite 105
Bakersfield, CA 93313
Projects Covered by this QA -QC:
Minit Stop
Analysis Date:
1/18/2007
Matrix:
AQ
BFB:
Internal Standards
Results
Benzene, fluoro
50
Benzene- d5, chloro-
50
1,4- Dichlorobenzene -d4
50
Surrogate Standards
Methane, dibromofluoro-
50
1,2- Dichloroethane -d4
52
Toluene -d8
47
p- Bromofluorobenzene (BFB)
50
IB:
Internal Standards
Results
Benzene, fluoro
50
Benzene- d5, chloro-
50
I ,4- Dichlorobenzene -d4
50
Surrogate Standards
Methane, dibromofluoro-
40
1,2 -Dich loroethane -d4
44
Toluene -d8
48
p- Bromofluorobenzene (BFB)
41
MS:
Results
1, 1 -Dichloroethene
56
Trichloroethene
48
Chlorobenzene
42
Toluene
48
Benzene
47
p- Bromofluorobenzene (BFB)
44
MSD:
Results
I,I- Dichloroethene
46
Trichloroethene
41
Chlorobenzene
41
Toluene
44
Benzene
65
p- Bromofluorobenzene (BFB)
42
8015M -TPHG
%Recovery
BFB
97%
1 B
98%
MS
104%
MSD
103%
Recovery
100%
100%
100%
100%
104
94%
100%
Recovery
- 100%
100%
100
80%
88%
96%
82%
Recovery
III%
96%
85%
95%
94%
890/
Recovery
93%
82%
81%
88%
130%
84%
5221 Woodmere Drive, Bakersfield, CA 93313
Phone: (661) 827 -5240 Fax: (661)827 -5244
Prole t Number 1603BK26 March 26, 2007
APPENDIX C
GeoTracker Upload Confirmations
E2C Pemediation Appendix C
Your EDF file has been successfully uploaded!
Confirmation Number: 7498971521
Date/Time of Submittal: 4/4/2007 11:19:12 AM
Facility Global ID: T0602993722
Facility Name:_ MMT STOP MARKET
Submittal Title: Minit Stop 1Q 2007
Submittal Type: GW Monitoring Report
Click here to view the detections report for this upload.
MINIT STOP MARKET Regional Board (lead agency) - Case #: 5T15000857
2900 UNION AVE CENTRAL VALLEY RWQCB (REGION 5F) - (JDW)
BAKERSFIELD, CA 93305 Local Agency - Case #: 15- 021 - 000855
BAKERSFIELD, CITY OF - (HOW)
CONF -'# TITLE, QUARTER ;`
:7498971521: Nlirrlt:Stop 1.Q':.2007 Q1 "2007
SUBMITTED BY. , SUBMIT:DATE STATUS
P6iI Goalwin 4/4/2007
PENDING-REVIEW: 1,
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Main \lelllt I \.jt.'%v/Adj I Uniozi(! EDD I Check EDD
UPLOADING A GEO-WELL FILE
Processing is complete. No errors were found!
Your file has been successfully submitted!
Submittal Title: MINIT STOP 1007 GEO WELL
Submittal bateLTirne: 411012007 5:05:25 PM
Confirmation Number: 5697817742
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MINIT STOP MARKET - T0602993722 - BACK TO SUBMI
---ITTA ,_ TA7US
2900 UNION AVE
BAKERSFIELD. CA 93305
DAfA
Submitted RN,
submitted Date Confirmation #
Global w-
I-)HIL GOALWIN (ALAI -111 RPJ
4110/2007 5697817742
T06029933", 23
STATUS GW MEAS DATE DTF OD QT�W RISER jjT LO -EI'H'Q A 1; DFSC, SHEEN
—REW, - - - -LQF -Wf-EA,
70602993722 MW-2 ACT
7116-200-1, 115.:13
N
2 10602993722 WV-1 ACT
1/16/2007 11.72
N
3 1"0602993722 MW-4 ACT
11612007 116.35
N
4 70602993722 MW-3 ACT
1/16,2007 x16.66
N
5 TID6029�t3722 MW---) ACT
1116/2007 120,81
hl
C IN'TACI S