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1 i pack. The remaining annular space will be grouted to the surface and a flush-mounted traffic box with a locking lid will be set directly into the wet grout. Well construction logs will be filled out for each monitoring well. Well construction specifications are described below. • The slotted PVC will be four-inch diameter, schedule 40. Length of the slotted PVC will be determined at each location. The PVC will be capped on the bottom with a threaded cap and will be flush- threaded to the casing above. • The slot size will be either 0.010 or 0.020 inches, depending on the formations encountered during the soil sampling activities. • The well casing will be four-inch diameter schedule 40 PVC. It will be flush-threaded to the screen below and a slip cap will be placed on top. • The filter pack will probably consist of clean #30 silica sand, which is compatible with both 0.010 and 0.020 slot size. • The well seal will be made with bentonite pellets placed immediately on top of the filter pack. The remainder of the annular space will be filled with grout using a tremie. • The grout mix will comply with existing State of California regulations. • The well cover will be a flush-mounted traffic box with a locking lid set directly into the wet grout. Each well casing will be permanently inscribed or otherwise marked with a unique identification number. Surveying Following well completion, each new well will be surveyed by a licensed surveyor to determine its horizontal coordinates and elevation. If a bench mark is not available, the wells will be referenced to an arbitrary datum. Monitoring Well Development Each completed monitoring well will be developed using a low- volume, submersible pump. In the event that recharge in the wells is inadequate for the pump, the wells will be developed with a large capacity (three-gallon) bailer. Before each well is developed, all submersible equipment will be decontaminated with an Alconox 4-7