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Page 4 TL 686-082-01 <br /> For : Pacific Gas & Electric Company <br /> Stockton Service Center <br /> Stockton , California <br /> Sample : 4 Soils <br /> Received : 1-19-87 from Karl Kerner , Twining Laboratories , Inc . <br /> TEST RESULTS <br /> Oil and Grease TVOH <br /> Sample Identification mg/kg mg/kg <br /> Location and Depth <br /> Soil $1 , 10 , 000 gallon tank , <br /> fill end , 15 feet 220 ND <br /> Soil #2 , product line , <br /> pump to pump , 2 feet 840 19 <br /> Soil #3 , distribution <br /> line to pump , 2 feet 30 ND <br /> Soil #4 , sump 4 . 5 feet 200 2 . 2 <br /> MDL 10 0 . 5 <br /> MDL = Method Detection Limit . <br /> mg/kg = Milligrams per kilogram ( parts per million) . <br /> TVOH = Total Volatile Organic Hydrocarbons ( reference <br /> standard : Diesel No . 2 ) <br /> THE TWINING LABORATORIES , INC . <br /> John Bricarello , Manager <br /> Chemistry Division <br /> akar ZXW�.dnz. <br /> Fresrw Modesto Visalia Bakersfield <br />