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0 * RECEIVED <br />r <br />Chevron Service Station 201383L <br />H . !TH RTMFNT <br />1960 W. 11a' Street, Tracy, CA 95376 <br />Scope of Work: Collect soil samples from beneath 6 UDCs; Collect one 4 -point composite stockpile <br />sample <br />Analysis: McCampbell Labs in Pittsburg, CA <br />• 6 compliance samples 5 -day TAT <br />o TPHg by 8015 <br />o TPHd by 8015 with silica gel <br />o BTEX, MTBE, and naphthalene by 8260 <br />• One 4 -point composite sample 24-hour TAT <br />o TPHg and TPHd by 8015 <br />o BTEX by 8260 <br />o Total Lead by 6010/6020 <br />Contingency analysis for the following <br />o STLC analysis if initial total lead is at or above 50 mg/kg <br />o TCLP analysis if initial total lead is at or above 100 mg/kg <br />o (8270) "organoleads" if initial total lead value is at or above 13 mg/kg. <br />Text or email a photo of the completed COC to me, so I can review it before the samples are submitted <br />to the lab. <br />Take pictures <br />Note on site plan stockpile location <br />Page 16 of 17 <br />