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Kennedy/Jenks Consultants <br /> Appendix D: Standard Operating Guideline <br /> Well Construction and Development <br /> D.1 Introduction <br /> This guideline describes procedures used by Kennedy/Jenks Consultants (Kennedy/Jenks) <br /> personnel for well construction and development following completion of boring and soil sampling <br /> procedures (described in Standard Operating Guideline, Boring and Subsurface Soil Sampling). <br /> D.2 Well Construction Materials <br /> 2-inch Schedule 40 PVC blank casing <br /> • 2-inch Schedule 40 PVC slotted casing, of appropriate slot size <br /> • 2-inch Schedule 40 PVC threaded and slip caps <br /> Hasp-locking standpipes <br /> • Ground-level traffic-rated watertight well housing enclosure <br /> Locking expansion plugs <br /> • Combination or key lock <br /> Filter pack sand <br /> Type I or 11 Portland cement <br /> • Concrete <br /> • Bentonite powder <br /> • Bentonite pellets or chips <br /> D.3 Well Development Equipment <br /> 2-inch-diameter vented surge block <br /> • Submersible pump (2-inch-diameter wells or larger) <br /> • 55-gallon DOT-approved drums <br /> • Steel or PVC bailer <br /> DA Typical Procedure <br /> 1. Following completion of selected borings, install the monitoring well casing through the center of <br /> the hollow stem auger, drive casing, or open boring. The monitoring well consists of a PVC <br /> Schedule 40 slotted well casing of appropriate diameter and a blank casing with a threaded <br /> bottom cap and a slip or threaded top cap or watertight expansion plug. The casing string must <br /> be held in tension during initial installation. If installed in drive casing, place centralizers at the <br /> top and bottom of the well screen, and every 30 feet from the top of screen to the ground <br /> surface. <br /> 2. Place clean, well-graded sand around the slotted section of the monitoring well to serve as the <br /> filter pack. The grade of sand is chosen on the basis of aquifer units encountered. The filter <br /> pack is emplaced as the auger or temporary casing is removed from the boring. <br /> Work Plan for Improved Detection Monitoring Program Appendix D <br /> Musco Family Olive Company, Tracy, California Page D-1 <br /> y;v:yi.m„mY�iazwzofoaoolnscma.eio�+aaisume zi ery�ve�mmsienndxe.doc <br />