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DRAWING NO THE <br />le MARK <br />GROUP <br />Southern Pacific Pipe Lines, Inc. <br />Holt, California <br />SHALLOW MONITORING WELL SPECIFICATIONS <br />PROJECT NO <br />86-1114.19 <br />ENGINEERS GEOLOGISTS Approved E3 0 <br />E <br />a <br />0 <br />Clean, washed No.2 Lapis luster sand <br />filter <br />8" <br />4 <br />4 <br />IP. • <br />• <br />• <br />• <br />4 • <br />4 • <br />• <br />• • <br />concrete apron <br />Ground surface <br />Variable <br />2" nominal Schedule 40 PVC <br />flush threaded casing <br />Cement/Bentonite seal: one sack of <br />Portland cement to 41/2 -8 gallons of <br />water; up to 4% Bentonite <br />ko "Tamp--proof" steel <br />locking cover <br />2' <br />Bentonite pellets (sodium free) <br />Flush-threaded joint, teflon-taped <br />2" (nominal) PVC machine slotted <br />section (0.02" slot size) <br />2" (nominal) PVC tail pipe <br />Threaded end cap or plug <br />Top of Zone of <br />Saturation <br />rot • '..• ' <br />8" <br />A <br />nominal boring <br />Schematic - not to scale