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J. H. KLEINFELDER & ASSOCIATES <br /> File: W-2001-1 <br /> January 29 , 1986 <br /> Page 8 <br /> B. Well Completion and Development <br /> The monitoring wells were constructed using a two-inch-diameter <br /> Schedule 40 PVC flush-threaded pipe. The screened section in <br /> each well consisted of factory slotted well screen with 0.020- <br /> inch openings. The annulus of the screened section was then <br /> n, No. 16 mesh Monterey sand and a two to three <br /> packed with clea <br /> foot bentonite plug placed above the sand pack. The remainder of <br /> the annulus was filled with a cement/sand grout. No solvents or <br /> glues were used during monitoring well construction. A screwed <br /> PVC was placed on top of each well casing. The exposed portion <br /> of the PVC pipe was protected with a six-inch-diameter steel <br /> casing with locking cap or a preformed concrete box grouted into <br /> place. Individual monitoring well construction details are pre- <br /> sented on the boring logs , Plates 3. 1 to 3.9. <br /> The monitoring wells were developed using a combination of well <br /> surging and pumping. The wells were surged with a PVC surge <br /> block. The wells were pumped with a, pneumatic bladder pump to <br /> discharge between four to 10 well volumes. The developing <br /> - equipment was cleaned between wells to minimize the potential <br /> 31 <br />