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The location of thirteen (13) monitoring wells designed to evaluate water quality, groundwater <br /> flow conditions and saturated thickness in the backfilled pit area upgradient of the Trench Drain <br /> are shown on Figure 2.05.6(3)-1. The wells will be constructed with 4 inch PVC extending from <br /> the surface through the backfill and into the undisturbed pit floor. The wells are designed to be <br /> screened above the contact between the backfill and the undisturbed pit floor. <br /> All of the monitoring wells will be 4" in diameter with total well depths as follows: <br /> Well Name Total Estimated Depth <br /> MW BF-59 31 feet <br /> MW BF-60 54 feet <br /> MW BF-61 85 feet <br /> MW BF-62 64 feet <br /> MW BF-63 99 feet <br /> MW BF-64 129 feet <br /> MW BF-65 127 feet <br /> MW BF-66 111 feet <br /> MW BF-67 107 feet <br /> MW BF-68 49 feet <br /> MW BF-69 119 feet <br /> MW BF-70 102 feet <br /> MW BF-71 127 feet <br /> Attachment 2.05.6(3)-4 December 2019 (TR-95) <br /> Page 2 <br />