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Y- xw� :s,:�:.... �. . '= r_ '-: �'k:. ._ .��.. �. ,a :�y-r��.�- "- =i�� du.�-a'- '3 ' - .�,;,., P~`= - -M� :t ...,��x7•-s �=� ,�. <br /> .We.....-•• <br /> tho wator tabu, the wellc will be tatinihatod i to 2 feat into <br /> laic clay. <br /> The boring vill be completed to a monitoring well according to <br /> Section 2647 of 'California Underground Storage Tank RejUlrtions" <br /> (Figure 2). Factory-perforated PVC ccraan (typically 4-inch <br /> diameter, 0.020-inch &lot, Schedule 40) will bo Inetalltd iron <br /> the bottom to 10 feat above the highect anticipated ground-wator <br /> lovoli blank PVC casing will ba installed from the top of the <br /> screen to ground surface. The bottom and of the cawing in each <br /> yell will be fitted with either a threaadad and plug or clip cap. <br /> The annular apace (greater than 2 Inches) betva*n tho borehole <br /> and the casing will be filled with a filter pack of clean, sand <br /> of an appropriate size. The filter pack will extend from a depth <br /> 2 fact above the top of the screen to t foot bnlow the bottom of <br /> tho cawing, except where depth* to water are less than 10 feet . <br /> The filter pack will be sealed with a minia+um of 3 feat of banto- <br /> nita pelleta and a neat Conant grout to the surface. The top of <br /> each wall will 'be eoaapleted and ,secured with a Veto' ..;9ht <br /> traffic box that can bo opened only with a spacial wrench and a <br /> locked well cap will be installed to further discourage* unauthor- <br /> ized access and vandalism. h tag with the wall number, well <br /> type, depth of wall, perforated intervals, and woll diamaterc <br /> will be attached to the interior of the well cover. <br /> it r,o ground water is encountered or it ground-water monitoring <br /> is not desired, each soil boring will be completely sealed. Pleat <br /> cement will be used to grout the boring from ground surface to <br /> the bottom of the boring. <br /> During drilling, undisturbed soil sacplea will be acquired at <br /> - -- -- - - <br /> S-food-ihttirva3a_-fiCcft-the-svr#a" down-to the-total-depth--of--the <br /> - - - ----- - - - <br /> bore hole, using a California modified splitr-&goon saftplar with <br /> brass liner, 5aPpling below the vratar table is not required, but <br /> it assists in than characterization of the soil profile. . h sample <br /> just above the water table or at the termination of a dry boring, <br /> 2 <br />