ARCHIVED REPORTS XR0012786 - Laserfiche WebLink

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SIERRA Clint Rogers Page 5 March 25, 1991 Soil samples will be collected from the borings at intervals i greater than 5 ft in steam- cleaned or new brass tubes in accordance with SES Standard Operating Procedure-Soil Sampling (Appendix B). SES will attempt to collect a soil sample at the soil/ground water interface. Soil samples will be collected at intervals of less,than 5 ft if there is a change in soil type or;if hydrocarbons are detected by field personnel or with the OVM. The soil samples will be field screened with an OVM in accordance with SES Standard Operating Procedure - OVM Use (Appendix B). If hydrocarbons are detected with the OVM or by SES field personnel at the bottom of the proposed boring/well, SES personnel will attempt to collect sufficient samples to define the vertical extent of hydrocarbons in the boring. Drill cuttings will be stored on-site in 55-gallon Department,of Transportation (DOT) approved drums pending analytic results. Each drum will bejsealed and labeled. ; The soil samples from the borings will be analyzed for TPPH(G) and TPH(D)by EPA Method 5030/8015 and for BTEX by EPA Method 8020. The soil samples will also be analyzed for total lead by EPA Method 7420. Soil cuttings from the borings will be analyzed for organic lead by the Department of Health Services (DHS) LUFT Method in accordance with Class III landfill disposal requirements. Task 4 - Well Development, Ground Water Sampling and Analysis The monitoring wells will be developed no sooner than 48 hours after drilling with a vented surge block and over pumping or bailing accordance with the SES Standard Operating Procedure- Well Development (Appendix B). Ground water will be removed from the wells using a submersible pump or PVC bailers.• Ground water removed from the wells will be temporarily stored on-site in 551gallon DOT-approved drums. Ground water samples will be collected from the wells no sooner than 24-hours after idevelopment in accordance with SES Standard Operating Procedure -Water Sampling (Appendix B). The evacuated water will be stored on-site in 55-gallon drums.