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<br /> BLE 1 -CHECKLIST OF REQUIRED DATA
<br /> FOR NO FURTHER ACTION REQUESTS AT U 4DERGROUND TANK SITES '
<br /> Site Name and Location: Vogue Cleaners, 2315 N. California St., Stockton, San Joaquin County(RB#1390919)
<br /> 7Y 1. Distance to production wells for municipal, domestic, A 2005 sensitive receptor survey identified three water
<br /> agriculture, industry and other uses within 2000 feet of the site. su�ply wells, one 1,500'to the northeast and two(950'
<br /> anO 1,550)to the southeast of the Site.
<br /> LILj 2. Site maps, to scale, of area impacted showing locations of do une 1996, one 500-gallon stoddard solvent and one
<br /> any former and existing tank systems, excavation contours and 551-gallon gasoline USTs were removed.
<br /> sample locations, boring and monitoring well elevation
<br /> contours, gradients, and nearby surface waters, buildings,
<br /> streets, and subsurface utilities;
<br /> Y 3. Figures depicting lithology(cross section), treatment system
<br /> Site iithology consists of clay,silt,and sand to 124', the
<br /> diagrams; toial,depth investigated.
<br /> N 4. Stockpiled soil remaining on-site oroff-sitedisposal(quantity); he fate of the excavated soil is not discussed in the
<br /> available reports.
<br /> Y 5. Monitoring wells remaining on-site, fate; Nineteen monitoring ells(MW-1S through MW-8S, MW-11S, and MW-1D
<br /> through MW-1OD)and two vapor investigation wells(GP-1 and GP-2) will be
<br /> ro erly abandoned.
<br /> 6. Tabulated results of all groundwater Depth to ground ter varied from 33'to 48'bgs. Groundwater flow
<br /> elevations and depths to water- direction variedfrom south to northeast, and groundwater gradient
<br /> varied from 0.001 to 0.009 ft/ft.
<br /> aJ 7. Tabulated results of all sampling All data adequately tabulari ed in various reports,including closure report.
<br /> and analyses:
<br /> i
<br /> Y❑ Detection limits for confirmation
<br /> sampling
<br /> LY Lead analyses
<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: contamination shown in applicable
<br /> rV_ MV reports. -
<br /> ---�:Wk •L-atera!-and-- i Vertical-extent_of-soil_contami.nation-•.
<br /> Lateral and Vertical extent of groundwater contarr ination
<br /> NI 9. Zone of influence calculated and assumptions used for subsurface remediation The regulatory agency did not require
<br /> system and the zone of capture attained for the soil and groundwatermediation active remediation.
<br /> system"
<br /> 10.Reports/information ❑Y Unauthorized Release Form ❑Y Qs 25 from 6/98 to 12/09
<br /> FY Well and boring logs PAR FRP FYJ0 her SCM(9109)HHRH(12/09)SV!(10/10)
<br /> Closure Report 12110
<br /> Y 11.Best Available Technology(BAT) used or an explanation for not USTs removal and natural attenuation.
<br /> using BAT,
<br /> attainable
<br /> Reasons why background waslis Minimal residua soil and groundwater contamination remains on-site.
<br /> usin BAT;
<br /> y 13.Mass balance calculation of substance treated The consultant estimated initial TPH as 7,129 kgs in soil, and 1.2 kgs in
<br /> versus that remaining; groundwater.A' proximately 0.31 kgs TPH remain in groundwater.
<br /> I, 14. Assumptions, parameters, calculations and The consultant onducted a soil gas survey, which passed the Region
<br /> model used in risk assessments, and fate and 2 commercial ESLs. Soil exceeded Region 2 commercial ESLs for direct
<br /> transport modeling; exposure and gfoss contamination in soil at 10, which is below normal
<br /> worker contact pie th. Water qualitygoals will be reached in 2020.
<br /> Y 15. Rationale why conditions remaining at site Soil and groundwater contamination reportedly are limited in extent.
<br /> will not adversely impact water quality, health, or Land use(coma ercial)is not expected to change in the foreseeable
<br /> other beneficial uses;and future. Vapor in rusion risk has been addressed. Plume is stable.
<br /> By: JLB; Comments:In June 1996, one 500-gallon stoddard s !vent and one 550-gallon gasoline USTs'were removed. -
<br /> from the subject Site. Based upon 25 quarters of groundwater monitoring showing a stable plume with a
<br /> Date: slowly declining concentration trend, the limited extent of contamination remaining in soil and groundwater,
<br /> 5/25/2011 no foreseeable changes in land use, and limited thre4ts from groundwater,soil,and soil vapor intrusion,
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