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PR0544222
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SITE INFORMATION AND CORRESPONDENCE
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Last modified
3/5/2019 2:07:09 PM
Creation date
3/5/2019 11:47:43 AM
Metadata
Fields
Template:
EHD - Public
ProgramCode
3500 - Local Oversight Program
File Section
SITE INFORMATION AND CORRESPONDENCE
RECORD_ID
PR0544222
PE
3528
FACILITY_ID
FA0005976
FACILITY_NAME
TIRE & WHEEL MASTERS
STREET_NUMBER
814
Direction
E
STREET_NAME
CHARTER
STREET_TYPE
WAY
City
STOCKTON
Zip
95206
APN
16718101
CURRENT_STATUS
02
SITE_LOCATION
814 E CHARTER WAY
P_LOCATION
01
P_DISTRICT
001
QC Status
Approved
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EHD - Public
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Mr. Robert Trommer L Page 3 of 7 <br /> Comments on CUF Site Closure Recommendations for Various Sites March 3, 2010 <br /> Claim No. 3484 - 2360 East Street, Tracy <br /> This site is in the closure process needing only monitoring well destruction. The EHD is awaiting <br /> the permit applications for the well destructions and anticipates site closure in one to three <br /> months. <br /> Claim No. 679 - 5814 E. Charter Way, Stockton <br /> This site is in the closure process needing only monitoring well destruction. The EHD <br /> anticipates site closure in one to three months. <br /> Claim No. 7709 - 2969 Loomis Road, Stockton <br /> As the EHD commented in May 2009 to the CUF five-year review closure recommendation, <br /> there are several factors that lead the EHD to consider closure of this site to be premature at <br /> this time. Those factors are as follows: <br /> • All eight monitoring wells have groundwater above the wells screened intervals (as much <br /> as twenty feet in MW-1). There appears to be a correlation between depth-to-water and <br /> concentrations detected in groundwater from the monitoring wells - as depth-to- <br /> groundwater increase, diesel concentrations also increase. <br /> • The EHD is concerned about the sudden drop in diesel concentrations reported in <br /> groundwater collected from MW-4, MW-5, and MW-7 in April 2008. The significant <br /> decrease coincides with a change in laboratories. During the October 28, 2008, <br /> sampling event, groundwater samples collected from MW-5 and MW-7 were sent to two <br /> different laboratories, and the results from the two laboratories were significantly <br /> different. The verification laboratory reported diesel at 2,210 micrograms per liter (ug/L) <br /> in MW-5 and 7,480 ug/L in MW-7, while the laboratory that had been detecting markedly <br /> lower concentrations reported diesel at 580 ug/L in MW-5 and 620 ug/L in MW-7. <br /> • Based on the soil contaminant mass for diesel estimated to be approximately 27,000 <br /> gallons (168,000 pounds) at the end of 2005, our department believes it prudent to try to <br /> remediate the diesel contamination prior to closing this site, especially since a light <br /> sheen continues to be reported in monitoring MW-4 and MW-5. <br /> Three dual-phase extraction wells with well screens that intersect the groundwater table were <br /> installed on the site in January 2010, but have not been developed or sampled as of yet. <br /> Considering that the characterization of shallow groundwater has not yet been completed and <br /> that an estimated 168,000 pounds of diesel is believed to be impacting soil and no remediation <br /> has yet been attempted, the EHD believes it would be beneficial to attempt some site <br /> remediation, reduce the contaminant mass and potential toxicity to microorganisms, and <br /> accelerate the return to background conditions. <br /> Claim No. 8509 - 1207 S. Aurora Street, Stockton <br /> This site is in the closure process needing only monitoring well destruction. The EHD anticipates <br /> site closure in one to three months. <br /> Comments on CUF Site Closure Recommendations 0310.doc <br />
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