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2.06 NEAT CEMENT <br />The neat cement shall consist of Portland cement type 1/11 and bentonite mixture <br />with a water -to -cement ratio that includes no more than 8 gallons of water per 94 <br />Ib bag of cement and 5 percent bentonite by weight. <br />2.07 CONCRETE <br />The concrete shall have minimum of 28 -day compressive strength of 2500 psi. <br />2.08 WELL PLUG <br />Well plug shall be expansion type plug which provides a water tight seal. <br />2.09 WELL ENCLOSURE <br />A. The well enclosure shall be a minimum 8"x 8" square, made of galvanized steel <br />and shall have a lockable cover with a padlock. The cover shall open and close <br />smoothly. <br />B. The well enclosure shall be painted with etching primer, then painted with two (2) <br />coats of YELLOW rust inhibitive paint. Etching primer may be applied at the <br />Contractor's shop. Final coats of yellow rust inhibitive paint shall be applied in <br />the field after installation of the enclosure in the presence of the Engineer. <br />C. The well enclosure shall be labeled based on the well number. The labeling shall <br />be with black paint and shall use stencils providing letters four inches in height. <br />2.10 CENTRALIZERS <br />Centralizers shall be composed of plastic or stainless steel. Galvanized steel or <br />black iron shall not be used. <br />A. Well Cap <br />Well cap shall be of appropriate size to fit the well casing and shall have <br />connections for the discharge tubing and the lead wire. <br />NC -Groundwater Monitoring <br />Well Specifications 12/08/17 Page 3 of 13 San Joaquin County Public Works Dept <br />Solid Waste Division <br />