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K L E I N F E L D E R <br /> EXPECT MORE <br /> Following completion of the drilling (8 inch borehole), a 2-inch diameter PVC monitoring <br /> well will be installed in the borings. The soil borings will be advanced approximately 10 <br /> feet into groundwater. The monitoring wells will be constructed with schedule 40 PVC <br /> with a 15 foot long .010 inch screened section. The screened section will be placed <br /> approximately 10-feet below and 5-feet above first encountered groundwater. The <br /> screened section will be surrounded by and covered by clean sand filter pack (#2/16). A <br /> 1.5 foot bentonite transition seal will be installed above the filter pack. The remaining <br /> annular space above the bentonite seal will be sealed using a neat cement (Type I- <br /> II)/bentonite slurry using approximately 3% bentonite powder. The bottom of the well will <br /> be capped with a threaded PVC cap or a slip cap using stainless steel screws. See Plate <br /> 3 for a typical monitoring well construction diagram. Please note the proposed wells <br /> seals (bentonite and grout) are thinner due to the proximity of the well screen to the <br /> surface. <br /> 48093.E01/ST07R052/CJC/Iv Page 6 of 15 <br /> ©2007 Kleinfelder, Inc January 26, 2007 <br />