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Page five , <br /> g. Install gravel pack to 100 feet from the finished ground surface. <br /> h. Construct a sanitary seal around the well casing extending down <br /> into the well 100 feet from the ground surface. <br /> i. Develop each sample section. <br /> j. Conduct well plumbness and roundness surveys. <br /> k. Disinfect well and test for bacterial contamination. <br /> I. Perform all specified operations incidental to well construction such <br /> as permits, logs, filing of records, temporary capping, and cleanup. <br /> I <br /> 2. Construction requirement for this well is: <br /> a. Pilo -066'--j 2-hh_ -diM_eter mm:x1;QQOfet r' <br /> for.Base,Brd <br /> purposes) - <br /> b. Conductor casing- 30-inch diameter, grout'to'surface <br /> c .Finished Bore Hole - 24-inch diameter x 1,000 feet for Base Bid d: <br /> purposes) <br /> d. Casing Outside Diameter- 4 @ 4-inch diameter <br /> e. Sanitary Seal Outside Diameter- 24-inch <br /> f. Casing Material- Schedule lQ Stainless-Steel - 2,820 feet total <br /> (approximately) - — -- - i� <br /> g. Screen Material- 861nl6s_s'Steel- 80 feet total(approximately) <br /> h. Drilling Method- Reverse Rotary <br /> ITEM NO. 10 <br /> The "REFERENCES"described in DIVISION Ill, Section 9 - "LEWIS MANOR <br /> WATER WELL AND NESTED MONITORING WELL DESIGN AND <br /> CONSTRUCTION", shown on.page 12, is hereby amended to read: <br /> 1.03 REFERENCES <br /> A. State of California, Department of Water Resources Bulletin 74 <br /> (Bulletin 74). <br /> B. AWWA Standard A100. ' <br /> f <br /> ITEM NO. 11 <br /> { <br /> The first paragraph under item "F"of"SUBMITTALS" described in <br /> DIVISION 111, Section 9 - "LEWIS MANOR WATER WELL AND NESTED }, <br /> MONITORING WELL DESIGN AND CONSTRUCTION", shown on page 13 is <br /> hereby amended to read: <br /> F. E-Lag: <br /> 1. Provide an electric log (geophysical log) for fhe.pi16i hole_and for the? <br /> Production Well.;The log shall indicate 3-point resistivity at minimum <br /> 6-foot radius around:the bore hole and spontaneous potential (SP). <br /> Provide a repeat section for quality control. E-log shall meet API RP-38 <br /> for format and log scales. .Depth reference shall be the same as that for <br /> drilling. Provide an interpretation of the log and recommendations for <br />