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ARCHIVED REPORTS_XR0003769
EnvironmentalHealth
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2900 - Site Mitigation Program
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PR0540905
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ARCHIVED REPORTS_XR0003769
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Last modified
2/3/2020 10:14:52 AM
Creation date
2/3/2020 9:10:26 AM
Metadata
Fields
Template:
EHD - Public
ProgramCode
2900 - Site Mitigation Program
File Section
ARCHIVED REPORTS
FileName_PostFix
XR0003769
RECORD_ID
PR0540905
PE
2960
FACILITY_ID
FA0023406
FACILITY_NAME
SIERRA LUMBER MANUFACTURERS
STREET_NUMBER
375
Direction
W
STREET_NAME
HAZELTON
STREET_TYPE
AVE
City
STOCKTON
Zip
95205
APN
147120808
CURRENT_STATUS
01
SITE_LOCATION
375 W HAZELTON AVE
P_LOCATION
01
QC Status
Approved
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SJGOV\sballwahn
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EHD - Public
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03 August 2000 <br /> AGE-NC Project No 98-0448 <br /> Page 2 of 4 <br /> the south-southwest (Figure 3) The ground water elevation at the site was within the screened <br /> intervals of wells MW-4A,MW-5, MW-6,MW-7 and MW-8 Conversely,the ground water surface <br /> elevation at the site Is approximately 2 feet to 3 feet above the slotted screen intervals In wells MW- <br /> 1, MW-2 and MW-3 and approximately 27 feet above the slotted screen Interval in well MW-4B <br /> 3 2 LABORATORY RESULTS OF GROUND WATER SAMPLES <br /> TPH-g was detected In water samples,collected from wells MW-1,MW-2,MW-3,MW-4A,MW-4B <br /> and MW-6 at concentrations ranging from 63 micrograms per liter (ug/1) to 77,000 ug/l The <br /> approximate extent of dissolved TPH-g is depleted In plan view In Figure 4 <br /> Various BTEX compounds were detected In water samples collected from MW-1, MW-2; MW-3, <br /> MW-4A, MW-4B and MW-6 at concentrations ranging from 0 66,Mg/l and 13,000 µg/l, the greatest <br /> benzene concentrations were detected In samples collected from MW-4B at a concentration of 5,200 <br /> µf/l <br /> MTBE was detected utilizing EPA Method 8260 Modified In water samples collected from wells <br /> MW-4B and MW-8 at concentrations of 90 ,Mg/l and 1 9 µg11, respectively DIPE was detected In <br /> water samples collected from wells MW-1 and MW-8 at concentrations of 1 1 /.ig/l and 19 4g11, <br /> respectively TBA was detected from wells MW-6, MW-7 and MW-8 at concentrations of 20 µg/l, <br /> 10 µg/1 and 8 2 gg/l, respectively No other fuel oxygenated compounds were detected during the <br /> laboratory analysis <br /> Analytical results of the ground water samples are summarized In Table 2 The laboratory reports <br /> (MeCampbell Analytical Inc I D 36786 through 36794) and chain-of-custody forms are presented <br /> In Appendix B <br /> 4 0. DISCUSSION AND CONCLUSIONS <br /> The Implications from the February 2000 ground water monitoring event are as follows <br /> • Ground water flow direction at the site appeared to be oriented generally towards the <br /> southwest at a gradient of 0 008, due to the low gradient at the site, slight variations In <br /> Iground water measurements or changes of recharge/discharge of the local ground water could <br /> greatly modify ground water flow direction <br />' • Well MW-4B Is "drowned" and yields a sample more representative of deeper ground water <br />. conditions <br /> IAdvanced GeoEnvironmental,Inc <br />
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