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FirecEIVED Working To Restore Nature <br /> 1710 Main Street <br /> Esealscalon, CA 95320 MAR � i9g3 <br /> Phone: (209) 838-3507 <br /> FAX: (209) 838-3509 ENVIRONMENTAL HFA`TH Novemher 7. 1992 <br /> PERMIT/SERVICE; <br /> Nlr. Harlin Knoll <br /> SdIl Joayctin CuuntN- PUhlic Health Services <br /> Lm ironm;mi td Heathli I)Iv'ISiol1 <br /> P.O. Box 2009 <br /> S[ocklon, CA 05201 <br /> IZE: 1Vorkpl;m for .Skil Excavation. PG&E's Stockton Service Center, 4040 West <br /> Lane, Stockton, CA <br /> Dear Vlr, Knoll- <br /> This letter N�Ili :t,r\•e eS at Workplan to ,, :,oil excavation to he corulucted act the ahove-referenced site <br /> lFi��tn e I ). The >tl�lle of the work is h:iSCd on filldin�_s tram IXUViuus inV ti�_ts[illns. <br /> SITE KACKGROUN'U <br /> The Site WA" the location of one 10,000 -,illon under--round Ilruduct stor,i',,e tank which contained <br /> transtllrnler oil for use it the tacility (Figure 2). -1-11e tank and ancillary buried product lines were <br /> r�+nhlved in Jlti uar\. 19N7. On Jamj lry 16, 1987. Twinim, Lahortitories Inc. Lollecterl tiiur ,oil tiamPles, <br /> iron \,u\int clellth�. in the vicinity of the ti)rmer st«r-.we tank :Incl 11ruJuet lines. The samples were <br /> lahoruon allaf�ze�l lily �;il and grease, total volatile organic hwdrocarhons, and PCBs. All samples <br /> contained oil :111d ,Jhove method detection limits, Only samples S-2 and S-4 conttlined total volatile <br /> or��,Jnic h�dr��cauh�lns �Ihuve Method limits, atnd only' Sample S-2 contained 1 .0 ppm PCB. <br /> inln�I LldhcratorieS report dated Jllmisu� 26, 1087 iS pIk1vid,�cl m Attacllmem I . klel UltS of laboratory <br /> u�alvses are sulm�l:u ized in Tahle I . <br /> SCOPE Oh 110RK <br /> The tilllom :cope Of Work iS haSed upon the inturmation outlined above. The work is designed to <br /> remove impacted soil in the viciltity of tIIC former tank and product line', (Figure 2). All Held work will <br /> he performed under supervision of I:ESNA pet_Sonnel in accordautce with the Site Satiety Plan (Attachment <br /> 2l. <br /> Soil Exc.1%,111on and Salnplin , <br /> 10 collta1111!nallt> Ill the poll t]'oJn a�:tlllg ati a SOLA-Ce de,'radatloll, the soil <br /> in the v icinity iii the ItWnler Stn;a-"e tank anal hurie!d product line', will he excavated. A backhoe capable <br /> .d ex, tit It depth oI :n i�:at..t 15 tact will he uSed. A 40-hour health anal Safety trained PG&E crdw <br /> %�ill per1'01111 the sS an align. It is cainl'ilcd th;it appro.xim:!telt' 125 ctthic bards of material will he <br />