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r <br /> Y r <br /> File No. 20-3937-01 <br /> June 21, 1996 <br /> this time, we propose to analyze 7 soil samples from each boring in accordance <br /> with practices within San Joaquin County. <br /> After collection, the soil samples will be labeled, logged on a chain-of-custody, <br /> and immediately stored in an iced cooler. Kleinfelder proposes submitting the 21 <br /> soil samples to a State certified laboratory for the following analyses: <br /> • Total Petroleum Hydrocarbons Purgeable (Gasoline Range) by EPA Method <br /> 8015M/5030 [TPH-G] <br /> • Benzene, Toluene, Ethylbenzene, Xylenes by EPA Method 8020/5030 <br /> [BTEX] <br /> • Total Extractable Petroleum Hydrocarbons (Fuel Fingerprint) by EPA Method <br /> 8015M <br /> • Halogenated Volatile Organics by EPA Method 8010 <br /> The samples will be analyzed on a normal laboratory schedule requiring <br /> approximately two weeks (ten working days) for completion unless the optional <br /> rush analytical turnaround is requested by the client at an additional charge. <br /> Following soil boring advancement, a groundwater monitoring well will be installed <br /> in each of the three(3) soil borings. <br /> The three borings will be drilled approximately 10 to 15 feet into groundwater(to a <br /> depth of approximately 85 feet bsg). Following completion of the drilling, a 2-inch <br /> diameter SCH40 PVC well will be installed in each boring. The well will be <br /> constructer) as described in Attachment A. The wells will be surveyed for well <br /> location and elevation above mean sea level (msl) so that subsequent water level <br /> sounding data can be utilized in determining groundwater flow directions and <br /> gradient as described in Attachment A. <br /> Task E03 - Monitoring Well Development and h ampling <br /> Forty-eight hours after installation, the 3 new wells will be developed to remove <br /> sediment-laden water and to increase the hydraulic radius of each well. <br /> Development will be performed as described in Attachment A. <br /> Water level measurements will be made in the wells at the beginning of the <br /> sampling round prior to purging and sampling the wells. The depth to groundwater <br /> will then be measured in each well according to the protocol described in <br /> Attachment A. The depth to groundwater measurements will then be converted to <br /> 20-3937-O]IMP960068 Page 3 of 10 01996,Klelnfelder, Inc. <br /> KLEINFELDER 2825 East Myrtle Street,Stockton,CA 95205-4794 (209)948-1345 (209)948-0621 fax <br />