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ARCHIVED REPORTS XR0000682
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2900 - Site Mitigation Program
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PR0522496
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ARCHIVED REPORTS XR0000682
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Last modified
2/15/2019 9:12:52 PM
Creation date
2/15/2019 3:58:17 PM
Metadata
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Template:
EHD - Public
ProgramCode
2900 - Site Mitigation Program
File Section
ARCHIVED REPORTS
FileName_PostFix
XR0000682
RECORD_ID
PR0522496
PE
2957
FACILITY_ID
FA0015317
FACILITY_NAME
FLAG CITY CHEVRON
STREET_NUMBER
6421
STREET_NAME
CAPITOL
STREET_TYPE
AVE
City
LODI
Zip
95245
APN
05532024
CURRENT_STATUS
02
SITE_LOCATION
6421 CAPITOL AVE
P_LOCATION
99
P_DISTRICT
004
QC Status
Approved
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EHD - Public
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13 July 2001 <br /> • AGE-NC Project No 96-0232 <br /> IPage 12 of 15 <br /> • Between 08 March and 09 April 2001,the mass of MTBE-impacted ground water processed <br /> from operation of the pump and treat system was calculated to be 6,977,294 pounds <br /> Multiplying the average MTBE concentration(100 5,ug/1)by the pounds of MTBE-extracted <br /> water yielded a mass of approximately 0 70 pounds of MTBE removed from extracted <br /> ground water (Table 8, Appendix D) <br /> • Between 09 April and 03 May 2001, the mass of MTBE-impacted ground water processed <br /> from operation of the pump and treat system was calculated to be 4,529,926 pounds <br /> Multiplying the average MTBE concentration(120,ug/1)by the pounds of MTBE-extracted <br /> water yielded a mass of approximately 0 54 pounds of MTBE removed from extracted <br /> ground water (Table 8, Appendix D) <br /> • Between 03 May and 04 June 2001, the mass of MTBE-impacted ground water processed <br /> from operation of the pump and treat system was calculated to be 7,226,120 pounds <br /> Multiplying the average MTBE concentration (91 ,ug1l)by the pounds of MTBE-extracted <br /> water yielded a mass of approximately 0 66 pounds of MTBE removed from extracted <br /> ground water (Table 8, Appendix D) <br /> • Between 04 June and 02 July 2001, the mass of MTBE-impacted ground water processed <br /> from operation of the pump and treat system was calculated to be 6,232,675 pounds <br /> Multiplying the average MTBE concentration (35 4g/l)by the pounds of MTBE-extracted <br /> water yielded a mass of approximately 0 22 pounds of MTBE removed from extracted <br /> ground water (Table 8, Appendix D) <br /> The results from the ground water monitoring and sampling events performed in June 2001 are as <br /> follows <br /> I • Generally, depth to ground water at the site vaned between 12 and 16 feet bsg <br /> • First Zone ground water flow direction at the site appeared to be oriented toward the area of <br /> MW-1 radially inward in all directions at an approximate gradient of 0 01 WR or less (Figure <br /> 4) Outside the area of influence of MW-1, First Zone ground water flow direction was <br /> inferred west to northwest at an approximate gradient of 0 003 Second Zone, Secondary <br /> Aquifer Zone and Primary Aquifer Zone ground water flow direction appeared to oriented <br /> westward at an approximate gradient of 0 004 ft/ft or less (Figures 4, 5 and 6) <br />' • First Zone ground water flow direction and gradient during the Flag City Chevron monitoring <br /> event appeared to be influenced by ground water extraction activities <br /> • Due to the low ground water gradient at the site, small variations in ground water <br /> Imeasurements or changes of recharge/discharge of the local ground water could greatly <br /> modify the inferred ground water flow direction <br /> Advanced GeoEnvironmentai,Inc <br />
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