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Nolte and Associates, Inc. <br /> • 0 MONITORING WELLS <br /> i. Depth from top of well casing to bottom of well (from diagram). <br /> j. Screen length (from diagram). <br /> k. Depth from top of well casing to top of sediment inside well, before and after <br /> development. <br /> 1. Physical character of removed water, to include changes during development in <br /> clarity, color, particulates, and odor. <br /> m. Type and size/capacity of pump and/or bailer used. <br /> n. Description of surge technique, if used. <br /> o. Height of well casing above ground surface. <br /> p. Quantity of fluid/water removed and time for removal (present both incremental and <br /> total values). <br /> 13. Water removed from the well for development shall not be counted toward the volumetric <br /> removal requirements of any pre-sample purging. <br /> 14. Well Acceptance Criteria <br /> Wells must be acceptable to the Owner and/or Engineer. Well acceptance shall be on a <br /> case-by-case basis. The following criteria shall be used along with individual circumstances <br /> in the evaluation process: <br /> a. The well and backfill shall meet the construction and placement specifications of <br /> this contract. <br /> b. Wells/boreholes shall not contain unrecovered portions of drill casing or augers. <br /> c. All well casing and screen materials shall be free of any unsecured couplings, <br /> ruptures or other physical breakage/defects before and after installation. <br /> d. The annular material surrounding each installed well shall form a continuous and <br /> uniform structure, free of any fractures or cracks. <br /> e. Any casing or screen deformation or bending shall be minimal to the point of <br /> allowing the insertion and retrieval of the pump and/or bailer optimally designed <br /> for that size casing (e.g., a 4 in. pump in a 4 in. Sch 40, PVC casing is optimal; <br /> a 2 in. pump in a 4 in. casing is not optimal). <br /> f. All joints shall be constructed to provide a straight, non-constricting, and water- <br /> tight fit. <br /> g. Well backfill materials (e.g., filter pack, bentonite, and grout) shall form a <br /> continuous annular filling around the well casing. <br /> 10 <br />