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ARCHIVED REPORTS_XR0012443
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3500 - Local Oversight Program
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PR0545517
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ARCHIVED REPORTS_XR0012443
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Last modified
3/11/2020 10:05:37 PM
Creation date
3/11/2020 11:46:31 AM
Metadata
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Template:
EHD - Public
ProgramCode
3500 - Local Oversight Program
File Section
ARCHIVED REPORTS
FileName_PostFix
XR0012443
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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y? r <br /> ERI 205513 OSR25 76 Facility 5886 Stockton Cahforma Jul 22 2003 <br /> • During second quarter 2000, ERI Installed one UST cavity well in general accordance with the <br /> CAP(ERI, December 28, 1999)and Tosco initiated periodic purging of groundwater from the <br /> UST cavity well and from groundwater monitoring well MW3 Groundwater purging was <br /> temporarily discontinued during third quarter 2000 pending clarification from the County <br /> regarding water sampling and data collection requirements Purging was resumed during January <br /> 2001, and continued through January 2002, when it was terminated following Installation and <br /> operation of the microsparge remediation system Approximately 285,000 gallons of groundwater <br /> were 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,Tracer Research Corporation (TRC) performed an enhanced leak detection test <br /> on underground storage systems to evaluate the system Integrity According to Tosca,the results <br /> of the enhanced detection test indicated that the underground storage systems are functioning <br /> within acceptable parameters <br /> • During third quarter 2001,ERI submitted a CAP, dated September 25, 2001 The CAP included <br /> recommendations to install a microsparge system to remediate MTBE impacted groundwater <br /> beneath the site <br /> • During first quarter 2002, the microsparge remediation system was completed and ERT performed <br /> system startup and initiated monthly operation and maintenance (O&M)of the system <br /> Currently, there are ten on-site AS wells(ASI through AS5, AS7,AS8, and AS 10, and nested wells <br /> • ASGS/D and AS9S/D), three on-site, single-casing groundwater monitoring wells(MW 1 through MW3), <br /> four on-site, dual-casing groundwater monitoring wells(MW4S/D through MW7S/D), one on-site UST <br /> cavity well, and nine off-site groundwater monitoring wells(MW8S/I/D through MW 10S/I/D)consisting <br /> of three wells at each nested well location as shown on Plate 2 and the On-Site Well Locations(Plate 3) <br /> Based upon data collected during ongoing quarterly groundwater monitoring and sampling, dissolved <br /> hydrocarbons are effectively delineated both laterally and vertically in the vicinity of the site However, <br /> dissolved hydrocarbons continue to be detected in groundwater samples collected from on-site wells and <br /> are concentrated in the vicinity and downgradient of the UST cavity <br /> SECOND QUARTER 2003 ACTIVITIES <br /> Based upon previous work completed at the site, and in accordance with the correspondence and request <br /> from the County, the following tasks were performed during the second quarter 2003 <br /> • ERI performed monthly remediation system O&M and collected monthly groundwater samples <br /> from wells MWI through MW3 <br /> • Gettier-Ryan, Inc (GRI) of Dublin, California,under direct contract to ConocoPhillips performed <br /> quarterly groundwater monitoring and sampling at the site on May 7 and 8, 2003 The GRI <br /> Groundwater Monitonng and Sampling Report Second Quarter-Event of May 7 and 8, 2003 <br /> 3 <br />
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