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TABLE 1 - CHECKLIST OF REQUIRED D4?TA
<br /> FOR NO FURTHER ACTION REQUESTS AT UNDERGROUND TANK SITES
<br /> Site Name and Location: J & L Market, 8125 S, EI Dorado St, French Camp, San Joaquin County(#390897)
<br /> y 1. Distance to production wells for municipal, domestic, agriculture, A municipal
<br /> pal supply wells within 2,000'of the site survey identified 48 domestic and 5
<br /> i
<br /> industry and other uses within 2000 feet of the site. (200'northeast and 400'north are closest).
<br /> None of the wells are threatened.
<br /> y Site maps, to scale, of area impacted showing locations of any former and existing tank In 11-95, one 2,000-gallon
<br /> systems, excavation contours and sample locations, boring and monitoring well elevation gasoline and two 10,000-
<br /> contours, gradients, and nearby surface waters, buildings, streets, and subsurface utilities; gallon oline USTs were
<br /> removed.
<br /> Site lithology consists of clay, silt, and Ws
<br /> and
<br /> 3. Figures depicting lithology(cross section), treatment system diagrams; to 141 feet, the total depth investigated.
<br /> Approximately 3,777 y over-excavated soil transported
<br /> NY
<br /> 4. Stockpiled soil remaining on-site or off-site disposal(quantity). to REMCO, Richmond.
<br /> 5. Monitoring wells remaining on-site, fate; All monitoring and remediation wells were properly abandoned by
<br /> 8 May 2013.
<br /> 6. Tabulated results of all groundwater Depth to groundwater varied from 19 to 30 feet below ground surface.
<br /> elevations and depths to water,' The groundwater gradient varied from 0.004 to 0.024 ft/ft, and the
<br /> downgradient direction varied from northeast-to southeast.
<br /> 7. Tabulated results of all sampling and All data adequately tabularized in various reports.
<br /> analyses:
<br /> Detection limits for confirmation sampling
<br /> Lead analyses
<br /> 8. Concentration contours of contaminants found and those remaining in soil and The extent of contamination is
<br /> adequately defined by soil borings
<br /> groundwater, and both on-site and off-site: and monitoring wells.
<br /> ElLateral and El Vertical extent of soil contamination
<br /> © Lateral and © Vertical extent of groundwater contamination
<br /> 9. Zone of influence calculated and assumptions used for subsurface remediation system Approved remediation was over-
<br /> and the zone of capture attained for the soil and groundwater remediation system; xSavation and ozone sparging
<br /> Vblhn
<br /> orts/information QY Unauthorized Release Form QY QMRs 36, from 6/02 to 3/12
<br /> ll and boring logs ❑Y PAR ❑YFRP ❑YOther, No Further Action Report 9/11
<br /> t Available Technology(BAT) used Oran explanation fornot Over-excavation, OS, and natural attenuationAT' Minor residual soil and groundwater contamination
<br /> sons why background was/is unattainable using BAT, remain.
<br /> Consultant estimates 14.65 lbs. TPH remains inss balance calculation of substance treated versus that groundwater
<br /> in ;sumptions, parameters, calculations and model used in risk Site passed Low ThreatClosure Policy. Residual
<br /> ments, and fate and transport modeling; contamination in soil below 10'bgs.
<br /> 7Y 15. Rationale why conditions remaining at site will not adversely Groundwater and soil contamination are limited in
<br /> impact water quality, health, or other beneficial uses, and Wiltent l be met Sensitive
<br /> by receptors are not threatened. WQGs
<br /> By: JLB`J//ll 0.
<br /> Comments:In 11-95, one 2,000-gallon gasoline and two 10,000-gallon gasoline USTs were removed at the
<br /> subject Site. Based upon evidence of a stable plume with declining concentrations, no threat to supply
<br /> .i
<br /> Date: wells,limited risk of vapor intrusion or direct contact exposure, no change to Site use(commercial), and
<br /> 5/8/2013 limited extent of contamination present in soil and groundwater, Regional Board staff recommends closure
<br /> for the Site.
<br />
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