Installation of Proposed Monitoring ▇▇▇▇▇ Clause Samples

Installation of Proposed Monitoring ▇▇▇▇▇. All monitoring ▇▇▇▇▇ will be constructed of two-inch PVC casing with 0.1-inch slotted PVC well screening across the water table. No glue will be used to thread the casing lengths. The ▇▇▇▇▇ will be constructed such that a minimum of 2.0 foot of screening will extend above the water table and approximately 8.0 feet of screening will extend below the water level. The annular space between well screen and the borehole will be backfilled with clean #1 silica sand to a depth of one to two feet above the well screen. A one-foot thick bentonite seal will be poured down the borehole above the sand pack and allowed to hydrate before grouting the remaining annular space with cement. Note: the length of the PVC screen, sand filter, and bentonite seal may be reduced (in that order) in order to accommodate a shallow water table. A locked cap with vent will be installed at the top of the PVC riser. ▇▇▇▇▇ will be completed as either stickup or drive-over ▇▇▇▇▇, according to Site conditions, and will be protected by locked, metal casings. All monitoring ▇▇▇▇▇ will be surveyed vertically to the nearest 0.01 foot and horizontally to an accuracy of one-tenth of a second latitude and longitude. Well locations and other surveyed data will be provided in the final RIR on a certified map prepared by a State certified surveyor. The survey will document the vertical elevations of the top of the casing pipe and the ground surface elevation adjacent to each well. Well construction logs showing components and details of well casing, well screen, filter pack, annular seal, and associated items will be provided in the final report.