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INDIAN RIVER COUNTY <br />I' l NOR'ri-I WTP RAW WATER TRANSMISSION SYSTEM <br />UPC PROJECT NUMBER 2422 <br />INDIAN RIVER COUNTY BID NUMBER: 2010024 <br />ADDENDUM NUMBER 1 <br />January 13, 2010 <br />x CLARIFICATIONS: <br />The non -mandatory pre-bid meeting minutes are attached. <br />The column pipe described in Specification. Section 1 121 1 2.02 1, shall be 8" Schedule 10 316 Stainless <br />Steel with flanged connections. Each well shall be supplied with 60. feet of column pipe. <br />Question 1: We need the existing well casing inside diameter. and casing depth ,for rhe civ e){icting <br />wells, as we need to confirm it will accommodate the specified flanged column pipe and <br />bowl assembly <br />Response 1: The final casing for all wells has an inside diameter of 14". The following table provides <br />the depth of each well casing.' <br />Well # Depth <br />4 <br />385' <br />5 385' <br />6 385' <br />7 398' <br />8 383' <br />9 385' <br />Question 2: We need to know the existing well casing material and specifications. <br />Response 2: The final .casing. is 16" SDR 17 PVC Certa-Lok manufactured by Certain Teed <br />Corporation. The casing conforrns to ASTM Specification F480. <br />Question 3: e. need the depth of the pumps.setting to be specified.. <br />Response 3; . All pumps shall.be supplied with 60 feet of column. pipe. <br />Question 4: is the existing well casing at the required elevation or does it need to be extended? <br />Response 4: ` The well casings need`to be extended so that the centerline of the aboveground discharge <br />piping is 3' above grade: <br />