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ARCHIVED REPORTS_XR0012393
EnvironmentalHealth
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3500 - Local Oversight Program
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PR0545517
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ARCHIVED REPORTS_XR0012393
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Last modified
3/12/2020 1:37:17 AM
Creation date
3/11/2020 11:29:21 AM
Metadata
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Template:
EHD - Public
ProgramCode
3500 - Local Oversight Program
File Section
ARCHIVED REPORTS
FileName_PostFix
XR0012393
RECORD_ID
PR0545517
PE
3528
FACILITY_ID
FA0003798
FACILITY_NAME
MARCH LANE 76*
STREET_NUMBER
2701
Direction
W
STREET_NAME
MARCH
STREET_TYPE
LN
City
STOCKTON
Zip
95219
APN
11619007
CURRENT_STATUS
02
SITE_LOCATION
2701 W MARCH LN
P_LOCATION
01
P_DISTRICT
002
QC Status
Approved
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S E C 0 R <br /> • July 1997 through December 1998—Tosca consultants performed the following tasks 1) <br /> conducted an underground utility search (ERI, October 6, 1997), 2) continued to perform <br /> quarterly groundwater monitoring and sampling, 3) obtained access agreements to drill <br /> soil borings at select properties located south and southwest of the site, 4) requested <br /> Sequoia Analytical Laboratories (Sequoia)to review chromatograms of groundwater <br /> samples collected during the September 1995 Geoprobe® investigation (Delta, February <br /> 6, 1996) in order to estimate methyl tertiary butyl ether (MTBE) concentrations in <br /> groundwater(ERI, March 2, 1999) <br /> • February 1999—Tosco consultants advanced three off-site cone penetrometers (CPT1 <br /> through CPT3) and drilled three off-site soil borings (68 through B10) (ERI, March 2, <br /> 1999) <br /> • April 1999 —Tosco consultants installed nine off-site groundwater monitoring wells <br /> consisting of three nested wells (shallow, intermediate, and deep) at each of three well <br /> locations (ERI, June 9, 1999) <br /> • May 1999—Tosco's consultant ERI submitted a report entitled Air Sparge/Sol! Vapor <br /> (ASISVE) Extraction Test dated October 18, 1999, presenting the data collected during <br /> ERI's May 1999, ASISVE feasibility test <br /> • December 28, 1999—Tosco's consultant ERI submitted a Corrective Action Plan (CAP) <br /> Tosco received a letter from the San Joaquin County Public Health Services department <br /> (the County) dated February 22, 2000, approving the remediation recommendations <br /> provided in ERI's December 28, 1999 CAP as an Interim Remedial (1R)Action document <br /> • During second quarter 2000, Tosco consultant ERI installed one UST cavity well in ! <br /> general accordance with the CAP (ERI, December 28, 1999) Periodic purging of <br /> groundwater from the UST cavity well and from groundwater monitoring well MW3 was <br /> also initiated Groundwater purging was temporarily discontinued during third quarter <br /> 2000 pending clarification from the County regarding water sampling and data collection <br /> requirements Purging was resumed during January 2001, and continued through <br /> January 2002, when it was terminated following installation and operation of the <br /> microsparge remediation system Approximately 285,000 gallons of groundwater were <br /> purged from the UST cavity well and well MW3 and transported to the Tosco refinery for <br /> recycling during interim groundwater remediation efforts <br /> • During June 2001, contractor Tracer Research Corporation performed an enhanced leak <br /> detection test on underground storage systems to evaluate the system integrity <br /> According to Tosco, the results of the enhanced detection test indicated that the <br /> underground storage systems are functioning within acceptable parameters <br /> During third quarter 2001, consultant ERI submitted an additional CAP, dated September <br /> 25, 2001 The CAP included recommendations to install a microsparge system to <br /> remediate MTBE impacted groundwater beneath the site <br /> • During first quarter 2002, the microsparge remediation system was completed and ERI <br /> performed system startup and initiated monthly operation and maintenance (O&M) of the <br /> system <br /> Currently, there are ten on-site AS wells (AS1 through ASS, AS7, ASB, and AS10, and nested <br /> wells AS6SID and AS9SID), three on-site, single-casing groundwater monitoring wells (MW1 <br /> • through MW3), four on-site, dual-casing groundwater monitoring wells (MW4SID through <br /> MW7SID), one on-site UST cavity well, and nine off-site groundwater monitoring wells (MW8S11/D <br /> through MW10SIIID) consisting of three wells nested at each location <br />
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