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� 1 LE -CHECKLIST OF REQUIRED DATA
<br /> NK SITES
<br /> FOR NO FURL ACTION REQUESTS AT UNDERGROUN
<br /> Site Name and Location: Geweke Land Development and Marketing, 16 South Cherokee Lane, Lodi, San Joaquin County
<br /> (RB#390006)
<br /> A 2000 sensitive receptor survey identified 1 irrigation,
<br /> Y 1. Distance to production wells for municipal,domestic,
<br /> and 1 active and 1 inactive public supply well located
<br /> agriculture, industry and other uses within 2000 feet of the site within 2000'of the site. The nearest downgradient wellactive ublic sup I 900'to southeast is not threatened.
<br /> one
<br /> on
<br /> Y Z. Siteany formaps to scale, of er and existingtank system excacted avation contou slocal..ons tand 1 nd one 000-gal on waste oil USTs system lwe gasoline,
<br /> removed from the site.
<br /> sample locations, boring and monitoring well elevation
<br /> contours, gradients, and nearby surface waters, buildings, consists of clay, silt, sand and gravel to
<br /> streets, and subsurface utilities; Site lithology
<br /> Y 3. Figures depicting lithology(cross section),
<br /> treatment system 145'bgs, the total depth investigated.
<br /> dia rams; The fate and volume of the excavated soil are not
<br /> 4. Stockpiled soil remaining on-site or off-site disposal(quantity);
<br /> discussed in the available documents.
<br /> Twenty two monitoring wells (Mw-1 throuuh R through d fourteen and EW-1)
<br /> Y 5. Monitoring wells remaining on-site, fate; remediation wells (VW-1 through VW-7,
<br /> wereproperly abandoned on 15 July 2010.
<br /> Depth to groundwater varied from 42 to 63'bgs. roundwater flow
<br /> G
<br /> 6. Tabulated results of all groundwater direction varied from southeast to southwest. Groundwater gradient
<br /> elevations and depths to water; varied from 0.001 to 0.002 ft/ft.
<br /> 7. Tabulated results of all sampling All data adequately tabularized in various reports, including closure report.
<br /> and analyses:
<br /> Y❑ Detection limits for confirmation
<br /> sampling
<br /> ❑ Lead analyses
<br /> contamination shown in applicable
<br /> 8. Concentration contours of contaminants found and those remaining in soil and The extent of the identified
<br /> groundwater, and both on-site and off-site: reports.
<br /> ❑Lateral and ❑Vertical extent of soil contamination
<br /> Lateral and Vertical extent of groundwater contamination
<br /> Soil for susurfacremediation
<br /> system and the zone o/capture attained or the soil and groundwater remediation bacteria solubbnpor ti jectionpba9chg
<br /> groundwater extraction, and ozone
<br /> system; injection were the engineered
<br /> remediation.
<br /> 10.Reports/information ❑Y Unauthorized Release Form ❑Y QMRs 8/85 to 6/09
<br /> ❑Y Well and boring logs Y❑
<br /> PAR Y FRP ❑Y Other Soil Gas Report(11-09), Closure Report(9-09)
<br /> USI
<br /> Y 11.Best Available Technology(BAT) used or an explanation for not ozone
<br /> removal, , batch , bacteria solution injection,
<br /> ozone injection, batch groundwater extraction, and
<br /> using BAT; natural attenuation.
<br /> 12. Reasons why background was/is Minor residual soil and groundwater contamination remains on-site.
<br /> Y ttainable usin BAT; The consultant estimates 19,670 lbs of TPHg removed from soil and
<br /> Y 13.Mass balance calculation of substance treated 30.51 lbs. of TPHg removed from groundwater. Approximately
<br /> versus that remaining; 1,967 lbs of TPHq remain in soil and 11.74 lbs remain in roundwater.
<br /> • 14. Assumptions, parameters, calculations and A soil vapor survey passed the Region 2 commercial vapor ESLs and
<br /> model used in risk assessments, and fate and the gross
<br /> contamination and direct contact ESLs, butidual TPHg in soil es orated below 15'b s.
<br /> trans ort modelin ;
<br /> 1, 15. Rationale why conditions remaining at site Soil and groundwater contamination reportedly is limited in ex a .
<br /> will not adversely impact water quality, health, or Land
<br /> future. a(commeVapor rcial)
<br /> is not and soil pec ed to change addressed.inthe oreser quality
<br /> ee
<br /> other beneficial uses;and
<br /> oats will be reached in 2031.
<br /> By: JLB,i�D Comments: In 1985, two 10,000-gallon and one 6,000-gallon gasoline, and one 1,000-gallon waste oil LISTS
<br /> system were removed at the subject Site. Based upon72 quarters of groundwater monitoring showing a
<br /> Date: stable plume with declining concentrations, no threats to nearby domestic wells, the limited extent of
<br /> 9/22/2010 contamination remaining in soil and groundwater, no foreseeable changes in land use, and limited threats
<br /> from groundwater, soil and soil vapor intrusion, Regional Board staff recommend UST case closure.
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