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ARCHIVED REPORTS_XR0010258
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3500 - Local Oversight Program
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PR0545695
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ARCHIVED REPORTS_XR0010258
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Last modified
5/27/2020 5:17:39 PM
Creation date
5/27/2020 4:39:10 PM
Metadata
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Template:
EHD - Public
ProgramCode
3500 - Local Oversight Program
File Section
ARCHIVED REPORTS
FileName_PostFix
XR0010258
RECORD_ID
PR0545695
PE
3528
FACILITY_ID
FA0003877
FACILITY_NAME
CITY OF STOCKTON FIRE STATION #2
STREET_NUMBER
110
Direction
W
STREET_NAME
SONORA
STREET_TYPE
ST
City
STOCKTON
Zip
95203
APN
13731025
CURRENT_STATUS
02
SITE_LOCATION
110 W SONORA ST
P_LOCATION
01
P_DISTRICT
001
QC Status
Approved
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EHD - Public
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10 April 2002 <br /> AGE-NC Project No 01-0827 <br /> Page 5 of 6 <br /> Depths to ground water ranged from 20 50 to 22 21 feet below the well casing tops The relative <br /> ground water elevations at the site ranged from 10 60 to 10 96 feet below mean sea level (MSL) <br /> The ground water flow ranged between east-northeast at the northern portion ofthe site and northeast <br /> at the southern portion on the site, the hydraulic gradient was approximately 0 001 ft/ft (Figure 3) <br /> 3 5 ANALYTICAL RESULTS OF GROUND WATER SAMPLES <br /> TPH-g was detected in four of the eight ground water samples, at concentrations ranging from <br /> 160 gg/1(RW-1)to 22,336µg/1(VW-2d) TPH-d was not detected in the eight groundwater samples <br /> collected <br /> Benzene was detected in six ground water samples at a maximum concentration of 82 µg/1(MW-1) <br /> Toluene, ethyibenzene and total xylenes were detected in four samples(MW-1,VW-1,VW-2d and <br /> RWA), the maximum concentrations were detected in the sample from VW-2d at 67 µg/1, 36 µg/1 <br /> land 138 µg/l, respectively No other ground water samples contained detectable concentrations of <br /> BTEX <br />( � MTBE was detected in ground water samples MW-1 and VW-2d at concentrations of 1 0 µg/1 and <br /> 2 2 µg11, respectively TAME was detected in the sample from well VW-2d at a concentration of <br /> I 2 7µg/l The chlorinated solvent 1,2-DCA was detected in ground water samples MW-1,VW-1 and <br /> RW-1 at concentrations of 5 8 µg/l, 0 7 µg/1 and 16 gg/l, respectively <br /> The analytical results are summarized in Tables 4 and 5 A copy of the laboratory report (PET Lab <br /> ID 14050-01 to -10) and chain-of-custody form are included in Appendix D <br /> 4.0. SUMMARY AND CONCLUSIONS <br /> Based on the data collected from the site, AGE concludes <br /> • Approximately 279 2 kg or 98 4 gallons of hydrocarbons were extracted and destroyed by <br /> the SVE network at the site between 05 November 2001 and 18 February 2002 <br /> • On 11 January 2002 the ground water elevation in the monitored area averaged 10 81 feet <br /> below mean sea level, the flow direction was inferred to be toward the northeast under a <br /> gradient of 0 001 ft/ft <br /> • The maximum hydrocarbon concentration in ground water was detected to the sample from <br /> the on-site vapor well VW-2d,the maximum concentrations ofBTEX compounds were also <br /> detected in the sample from VW-2d MTBE was detected in the samples from VW-2 and <br /> MW-1 <br /> Advanced GeoEnvironmental,Inc <br /> I <br />
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