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1 <br /> Phase 11 Contaminant Delineation investigation <br /> Central California Traction Company <br /> 1645 Cherokee Lane,Stockton,CA <br />' Hydro-Environmental Technologies, Inc <br /> collected in unpreseived 40-milliliter (mL) laboratory grade glass volatile organic analysis (VOA) vials <br /> for gasoline constituents The samples were unpreserved because the calcium carbonate-rich ground <br /> water would react with hydrochloric acid producing carbon dioxide gas bubbles, thereby invalidating the <br /> sample The VOA vials were properly labeled inside of a Ziplock-type plastic bag to lessen possible <br /> outside contamination The TPH as diesel samples were collected to 250 mL laboratory grade amber <br /> ' glass containers All samples were maintained at a temperature of approximately 4 degiees Celsius and <br /> were shipped to the laboratory under chain of custody Each boring was grouted to the surface with a <br /> cement-bentonite mixture Excess soil sample cuttings weie contained on-site in a 55-gallon steel drum <br /> No other wastes were genes ated <br /> Table 3 Sample Locations <br /> 1645 Cherokee Lane,Stockton, CA <br /> Boring No Location <br /> B-7 -215 feet south of MW-1 in straight line from power pole south of MW-4, -22 feet <br /> ' northeast of B-10, and 20 feet northwest of B-8 <br /> g-g -20 feet southeast of B-7, -17 5 feet north of B-9, and 26 5 feet east of B-10 <br /> B-9 --17 5 feet south of B-9 and-20 feet east of B-1 t <br /> B-10 -18 5 feet north of B-I 1, -22 feet southwest of B-7 and 26 5 feet west of B-8 <br /> B-11 -18 5 feet south of B-10 and --20 feet west of B-9 <br /> 1 <br /> 3.0 SOIL AND GRAB GROUND WATER ANALYSIS <br /> 1 <br /> Soil and grab ground watet samples wete tiansported in an ice chest with bagged ice using proper chain-of- <br /> custody procedures to TEG, a California Department of Health Services (DHS) accredited laboratory <br /> ' Samples were analyzed for TPH as gasoline and diesel by USEPA Method 8015M, and BTEX <br /> compounds were analyzed by USEPA Method 8021B <br /> ' 31 Soil Sample Results <br /> No detectable concentrations of TPH as gasoline of BTEX were found in the soil samples submitted for <br /> ' analysis TPH as diesel was detected at a maximum concentration of 4,300 ppm at soil boring B-11 at 35 <br /> feet bsg Analytical data aie summaiized in Table 4 below Ceititied laboratory data sheets and chain of <br /> custody forms are included in Appendix C <br /> 5 <br />