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kn K L E I N F E L D E R <br /> January 5, 1988 <br /> File: 24-2079--01 <br /> Mr. Keith Tallia ~� <br /> Oil Equipment Services <br /> P.O. Box 950 <br /> San Andreas, CA 95249 ~'`1 <br /> SUBJECT: Soil Sample Analytical Results, Di Salvo Truck Lines <br /> Dear Mr. Tallia: <br /> Enclosed are the analytical results for the, soil sample'-collected -from Di <br /> Salvo Truck Lines at - 100. Ventura, Street., Stockton, California. It is <br /> Kleinfelder's understanding that one underground diesel- tank was excavated <br /> and removed from the site. After consulting with Mr. Dan Moe of: the San.; <br /> Joaquin County Local Health District, :John' Armstrong of Oil .EquIpmeiit., <br /> Services requested one soil sample be collected -from the bottom of the <br /> open excavation below the ,filling end.-of the tank.' - <br /> On December 11, 1987, 'a Kleinfeldergeolog"St collected one! soil sample at <br /> a depth of approximately 21 feet.' from the native sozl Within r.lie. <br /> excavation (see Plate 1) . -Soil sample SS-18308 . was a gray;clay. Qualitative 'field , <br /> screening using a field photoionization <br /> detector (PID) at the 15 foot-depth' resulted in readings of over 1 , 700 <br /> parts per million by volume (ppmv) : With these iresults, Mr Moe advised <br /> advancing the depth of the "excavation. Due to equipment 'limitations, the <br /> maximum obtainable -depth was 21 feet, at. which depth Sample SS-18308 was' .'. <br /> collected. At both the 15, and 21. foot depths, a hydrocarbon odor was <br /> observed. It is ' Kleinfelder's 'understanding that following. the <br /> acquisition of Sample-SS-18308, the tank excavation wa3 backfilied. ' - <br /> The sample was delivered under chain-of-custody to .-Chemwest Analytical . . <br /> Laboratories, Inc. ,_ in Sacramento, . and analyzed. -. for :total petroleum <br /> hydrocarbons (TPH) by' GC/FID 'and purgeable aromatic compounds (BTEX) 'by <br /> EPA Method 8020. Sample SS-18308- yielded a` TPH concentration of 190mg/kg, <br /> diesel and was below reporting limits..for gasoline. The BTEX.analysis was <br /> below reporting limits foi`all cons'tituents. , The analytical results for <br /> the two analyses are presented in Table ,l , t:aborat6ry-data sheets and a' <br /> chain-of-custody form are included at the end of. this .report. . <br /> Kleinfelder recommends a co <br /> AY of this report be submitted to the, San <br /> Joaquin County Local Health District for their review and approval. <br /> KLEINFELDER 9795 Business ParkDrive, Suite C, 5acramtnto, CA 95827 '(916) 366-1701 <br /> ,�r <br />