COMPLIANCE INFO - Laserfiche WebLink

Home Browse Search

The well screen shall be 2-inch Schedule 80 PVC, flush-threaded. Aperture size shall be 0.020-inches. Well screen shall be factory-cut. Well screen shall be new, individually wrapped, and in 10-foot lengths. 2.04 CENTRALIZERS Centralizers shall be composed of stainless steel. Galvanized steel or black iron shall not be used. Centralizers shall be installed as needed to eliminate bends in casing and ensure pump access to full well depth. Centralizers shall maintain 2- inch separation between the borehole wall, monitoring well casing, and sounding pipe casing within the annular space. 2.05 SOUNDING PIPE The sounding pipe shall be 1-inch Schedule 40 PVC, flush-threaded. Sounding pipe casing shall be new, individually wrapped, and in 10-foot lengths. A PVC end cap shall be installed on each sounding pipe. 2.06 SOUNDING PIPE SCREEN The sounding pipe screen shall be 1-inch schedule 40 PVC, flush-threaded. Aperture size shall be 0.020-inches. Well screen shall be factory-cut. Sounding pipe screen shall be new, individually wrapped, and in 10-foot lengths. 2.07 GRAVEL ENVELOPE The gravel envelope shall be #2/12 gradation, well-rounded, and free of debris or organic impurities. 2.08 BENTONITE SEAL The bentonite seal shall consist of sodium montmorillonite clay. Pellets or chips with a gradation of 1/4 to 3/8-inch shall be used for the bentonite seal material. Bentonite material should be able to pass through 30 feet of standing water without sticking together or bridging. 2.09 NEAT CEMENT The neat cement shall consist of Portland Type II cement, with a water-to-cement ratio that includes 5 to 10 gallons of potable water per 94 lb sack of cement, per San Joaquin County EHD cement requirements. 2.10 CONCRETE The concrete shall have minimum of 28-day compressive strength of 2500 psi. 2.11 WELL PLUG North County G-15&G-16 San Joaquin County Groundwater Monitoring Well Specifications 3 Public Works Dept Solid Waste Division