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TABLE 1 - CHECKLIST OF REQUIRED MA <br /> FOR NO FURTHER ACTION REQUESTS AT UNDERGROUND TANK SITES <br /> Site Name and Location: Lockeford Beacon,13975 Hwy.88,Lockeford,San Joaquin County <br /> Y 1.Distance to production wells for munk#W domestic,agriculture,industry Well survey completed by AGE Two muni <br /> and other uses*Whin 2000 feet of the site; wells ldentMe4 Lockeford Com Sery Wal! <br /> 94, 1200'NE and#2(Tower wc11)1900'SW. <br /> MY 2.Site maps,to scale, of area impacted showing locations of toner and existing tank systems, Soil Impact to shown on <br /> excavation contours and sari Ibcabons,boring and mondoring welt elevation contours, waled map,near MW-2 and <br /> gradents,and nearby surface waters,buildings,streets,and subsurface uWas; S".Approx 30'diameter. <br /> 3.Figures depleting!ethology(crass section), treatment system diagrams; Crows secdon shows contamination <br /> between 30'and 45'bgs,In slWcMy. <br /> YM 4.Stockpiled soil remaining on-site or off-site disposal(quantity); NOAe remaining on Fite, 17 drums of ddifing spode <br /> removed from the site. <br /> 5. re , _..._Sian monitodag ralaecatadAwaits SJCEHD will require wait 46struction <br /> once NFAR concurrence is granted <br /> FY 1 6 Tabulated results of all groundwater elevations and depths to water, DTW range from-61'bgs to•-751bgs. <br /> 7.Tabulated results of all sampling and analyses: Soil and GW resWts arc presented. Groundwater non-detect for all <br /> constituents(TPHg,BTEX and oxygenates). Residual soil <br /> Y Detection limits for confirmation sampling contamination remains between 30 and 45'bgs near MW-2 and 8B-9. <br /> Y Lead analyses <br /> 7 8. Concentration contours of contaminants found and those remaining in soil Groundwater Is now ND for all <br /> groundwater,and bo site and off-sffe: constituents.MW-is located In most <br /> Lateral and Y Vertical extent of soil contamination Impacted zone,and gw samples ane NO. <br /> �Y Lateral and Y Verticcal extent of groundwater contamination <br /> a9.Zone of influence calculated and assumptions used for subsurface NVA <br /> ramod Don system and the zone of capture attained for the soil and <br /> groundwater ra mediation system, <br /> llI 10.Reports/information n Unauthorized Release Form Y❑OMRs(Dates) <br /> n We#and boring logs EY PAR Y] FRP [j]Other(report name) <br /> 11.Best Available Technology(BAT)used or an explanation for not using SAT; Attempts at GW extraction from MW-2 were <br /> not successful,and vapor ex not successful <br /> 0 12.Reasons why background weaft unattainable using BAT; WA <br /> YD 13.Mass balance calculation of substance treated versus that remaining; Mass calculation conservative,from orig.soil <br /> borings estimates 184 gallons of gasoline <br /> 0 14.Assumptions,parameters,calculations and model used in risk N/A <br /> assessments,and fate and transport modeling, <br /> t <br /> 0 15 Rationale why conditions remaining at site will not adversely Groundwater Is no longer Impacted at the site.No <br /> impact water quality,health, or other beneficial uses;and residual TPH,BTEX or MTBE remaining In grouodwecter <br /> mon. wells. Soli cant.remains 30-43 bgs.h2o at ti0'b9s. <br /> O 16.WET or TCLP results <br /> By:Mme. Comments:Groundwater conditions have improved dramatically, with no detectable petroleum hydrocarbons <br /> remaining in the monitoring wells. Residual soil contamination is present in the vicinity of a former Dry Well(French <br /> ' Drain). which has been destroyed. Soil impact Is limited to the day/silt zone,3045'bgs between MW-2 and S&9. <br /> Date <br /> :11 17e4" Groundwater elevation is reported at approx 60'bgs and deeper. The remaining contamination does not appear to <br />