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E <br />SECTION 76 <br />SPECIAL <br />Page 3 of 12 <br />(02/17) <br />B. Installation of groundwater wells shall be in the presence of EHD inspectors. <br />C. Contractor shall schedule well installation inspections with EHD. <br />D. EHD inspection hours are from 9.00 a.m. to 4.00 p.m. each working day. Well <br />installation shall be during EHD's inspection hours. <br />12-111 :A <br />i+ • • <br />2.01 GENERAL <br />All materials shall be new and free of defects. Contractor shall inspect materials <br />before installing. Contractor shall replace defective materials at no additional <br />cost to the County. <br />2.02 WELL CASING <br />The well casing shall be schedule 80, flush -threaded polyvinylchloride (PVC). <br />2.03 WELL SCREEN <br />The well screen shall be PVC schedule 80, flush -threaded. Well screen shall be <br />factory -cut slots. <br />2.04 SAND PACK <br />The sand pack shall be free of debris or organic impurities. <br />The bentonite seal shall consist of sodium montmorillonite clay, be pellets or <br />chips and should be able to pass through standing water of 50 ft without sticking <br />together or bridging. <br />2.06 NEAT CEMENT <br />The neat cement shall consist of Portland Type II cement, or equivalent, and <br />bentonite mixture with a water -to -cement ratio that includes no more than 8 <br />gallons of water per sack of cement and 5 percent bentonite by weight. <br />SP -16 <br />LANDFILL AREA 56 -SEC 76 -GW Well Specs <br />