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ME <br /> MINE <br /> 68 <br /> �.a. <br /> a •�'e' .-se.X�.E�'"yg ry �,r { �s5' q` <br /> v <br /> k .• �M. '. - ((gy�mm? i «' . -•�F4'Vf fry � Y 'R`�y'r� 1 <br /> k.- <br /> f ' <br />?1. <br /> NOR <br /> NO!, <br /> �tYDRCCEOLOCEr A55ES5 wORK AN <br /> Shell Serrke Station <br /> 620 West Chuter Way <br /> Stodkton,California <br /> DORK Project No,40-88-588 <br /> Page 7 <br /> Following installation, the wells will be developed as described in Appendix D, Section 1.5 with a <br /> 1.75-inch-diameter manual pump capable of producing I to 2 gallons per minute(Spm). Because <br /> the pumping creates a surging action within the well screen,this is an effective method of deve!oping <br /> monitoring wells. After development is completed, water samples will be collected from each well <br /> using methods described in Appendix D,Section 1.7. <br /> 4.4 CheMjCAL,, nalvspr <br /> y_ .4.]ll h I else <br /> ry Based on the results of soil-sample screening,soil samples will be collected for chemical analysis. <br /> Soil samples will be analyzed for BTEX, EDB, EDC, and TPH(using EPA Method 8264). These <br /> analyses will aid in the characterization of the type of hydrocarbons present(gasoline or diesel fuel). <br /> Soil samples collected from the boring located between the present and former waste oV tanks wil? <br /> be analy:x•d for oil and grease using EPA Methods 503D and 503E. <br /> 4.4.2 rr n W r h m: ! n see <br /> Groundwater samples collected will be subjected to the sample analyses described in Section 4.4.1 <br /> using EPA Method 8260. Water samples from the monitoring well near the waste oil tank will be <br /> analyzed for oil and grease using EPA Method 503E. <br /> x,x <br /> SCHEDULE - <br /> Delta will proceed with the work outlined in this plan as soon as approval is obtained, A drilling <br /> crew will be mobilized to drill the proposed soil borings and install monitoring wells within 3 weeks <br /> Of approval of this plan. Laboratory analysis of soil and ground water samples generally requires 3 <br /> weeks. A summary repor�L of the results,including information on subsurface geology,ground water <br /> 1xe <br /> depth and flow direction, monitoring well construction details, and recommendations for further <br /> assessment or remedial activities Ivill be prepared within 3 weeks after laboratory results are received. <br />