WORK PLANS - Laserfiche WebLink

Home Browse Search

Nolte and Associates, Inc. MONITORING WELLS surface, with 2-1/2 ft of length below ground surface. Posts shall be anchored in concrete. Four posts shall be positioner) around the perimeter of each concrete pad, at the center of each side. The outside only of the protective casing, hinges, and covers/caps shall be painted fluorescent orange. Painting is required to be completed and dry prior to development. Extra care shall be taken to insure that no paint or aerosol spray enters into the well. The well designation shall be painted on the outside of the protective casing using white paint and stencil. This identification shall be done after the casing is painted as described above. Painting is required to be completed and dry prior to development. 3.05 ENVIRONMENTAL CONTROL A. Disposal of Development and Testing Water Contractor shall submit a water disposal plan for Engineer's approval prior to initiation of development pumping. Water, including mud, sand, and debris pumped from the well during development and testing shall be disposed of in such a manner as not to damage or interfere with work or property of others. Prior to discharge into drainage facilities, a temporary settling basin shall be provided that eliminates discharge of mud and/or sediment. Settling basins shall consist of a portable tank. Basins shall have a minimum 60 minute detention time at the design flowrate. Provisions for energy dissipation of the pumped water shall be employed at the entrance to the basins to assure quiescent settling conditions in the basins. Baffles or multiple cells in portable sumps may accomplish this function. Removal of settling basins and sediment shall be accomplished after well development by the Contractor. B. Drilling Fluid Containment Drilling fluids shall be completely contained in watertight portable basins. Excavated mud pits F ll nvL_be allowed. Cuttings shall be removed regularly to assure that the fluid volume is sufficient for settling cuttings out of solution. C. Cuttings and Drilling Fluid Disposal All fluids shall be removed from the site and legally disposed of at the Contractor's expense. Cuttings may be spread onsite at a location approved by the Owner. 3.06 WELL CLEANING AND DEVELOPMENT A. General Each monitoring well shall be cleaned and developed to remove all traces of drilling fluid, improve the permeability of the zone around the well screen, and permit the taking of sediment- free samples. The development of monitor wells shall be performed as soon as practical after well installation, but no sooner than 48 consecutive hours after grout seal placement. The record 7