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Between sampling attempts, all sampling equipment will be cleaned using a three-bucket wash <br /> system In this system, the liners and samplers are scrubbed with a brush in a bucket of tap <br /> water and detergent, rinsed in a second bucket of tap water, and given a final rinse in a bucket <br /> ' of distilled water <br /> ' Three soil samples, the samples with the highest volatile organic content as indicated by the PID, <br /> from each boring will be submitted for laboratory analysis <br /> ' Samples will be collected, preserved, and transported under chain-of-custody in accordance with <br /> RESNA's Quality Assurance/Quality Control (QA/QC) Pian, Soil Sampling Protocol (Appendix <br /> I) The selected samples will be analyzed for benzene, toluene, ethylbenzene, and xylenes <br /> (BTEX) and total petroleum hydrocarbons as gasoline (TPHG) by EPA methods 8020 and <br /> modified 8015, respectively <br /> ' The oil cuttings will be laced on and covered with 6 mil plastic sheeting and stockpiled on- <br /> s c g p P g P <br /> site Soil cuttings and groundwater will be properly disposed of after reviewing the analytical <br /> results and obtaining agency approval <br /> 3.3 Monitoring Well Installation <br /> ' Following completion of the 3 borings, each boring will be converted to a groundwater <br /> monitoring well by advancing the boring 15 feet below static water level for well installation <br /> ' The wells will be constructed of four inch diameter F480 threaded PVC screen/casing No glues <br /> or solvents will be used Screen slot size will be 0 010 inch Sand pack material will be #2 <br /> ' pre-washed silica-sand A minimum two foot bentonite seal will be placed prior to grouting with <br /> neat cement Wells will be installed to a depth of approximately 90-95 feet below grade Well <br /> ' completion depth is based on the setting of the well screen 15�feet-below and 5 feet above the <br /> saturated zone This construction will allow for groundwater fluctuations Actual completion <br /> ' depths will be determined in the field based on hydrogeologic conditions encountered Typical <br /> completion will be as shown on Figure 4 <br /> wP-0393 FNL 5 <br /> 1 <br />