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Appendix A: Standard Operating Guideline - <br />Typical Hydraulic Push/Drive Sampling Procedures <br />Al Introduction <br />This guideline describes the equipment and procedures typically used by Kennedy/Jenks <br />Consultants personnel for collecting soil and reconnaissance groundwater samples with a hydraulic <br />push/drive system. <br />A.2 Equipment <br />Portable, hydraulic push/drive sampling system <br />4-foot long or 5-foot long (depending on drive rod length), 1.75-inch O.D. acetate or butyrate <br />liners (or other appropriate size for the push/drive rods) and liner sealing materials (Teflon <br />sheets, plastic end caps, Ziploc plastic bags) <br />Type II Portland cement <br />Equipment cleaning materials <br />Steam cleaner <br />Generator <br />Stiff-bristle brushes <br />Buckets <br />High-purity phosphate-free liquid soap <br />Distilled or Deionized water <br />Rinsate collection system <br />Personal protective equipment <br />Appropriate groundwater sample containers <br />Chain-of-custody forms <br />Insulated sample storage container and ice or ice substitute <br />A.3 Typical Procedures <br />Applicable drilling permits will be obtained prior to mobilization. <br />Sample locations will be cleared for underground utilities. <br />All re-usable downhole equipment will be cleaned prior to use at each location. <br />Soil borings will be advanced using a portable, hydraulic push/drive sampling system that drives <br />steel sampling rods into the ground to collect continuous soil cores. <br />An acetate liner is fitted inside of the lead steel rod, which has an open bottom. Soil is driven <br />into the acetate liner as the steel rods are advanced. In the dual-tube system, upon advancing <br />the steel rods the length of one rod (5-feet), the acetate liner is retrieved while the steel rods <br />remain in the borehole, providing a continuous casing. After retrieving the filled acetate liner, a <br />new liner is then lowered back into steel rods and the rods will be driven another 5 feet. This <br />process will be repeated until the desired depth is reached. <br />Additional Soil and Groundwater Sample Work Plan, Page 1 <br />BNSF Mormon Yard, Stockton, California <br />Mybnsf2\bnsfwp\wp1201811899020 00_r ormon_yardworkplan_dlappasoghydrpushrive acpt chng_wp.eloc