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11 <br />C. The Engineer will be in charge of scheduling well installation inspections with <br />EHD. Contractor shall not coordinate any inspections with the EHD unless <br />authorized by the Engineer. <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 />E. Contractor shall provide the Engineer the estimated day and time for well <br />installation. <br />1. Contractor shall confirm with the Engineer the approximate time Contractor's <br />crew will be ready for the first inspection for a project before 24 hours. <br />2. Contractor shall confirm consecutive inspections needed for the project with the <br />Engineer in the field based on the work progress after the first inspection. The <br />Engineer will then schedule inspections with EHD inspector. <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 />2.05 BENTONITE <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 />FH -Groundwater Monitoring <br />Well Specifications 8/15/18 Page 2 of 12 San Joaquin County Public Works Dept <br />Solid Waste Division <br />