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R <br /> s <br /> General Policy <br /> Truly difficult conditions which can only be resolved by the application of massive force or large <br /> volumes of high pressure air should be addressed by a drilling or pump installation contractor. <br /> Blaine Tech Services, Inc. is not in the heavy salvage business and has a general policy against the <br /> use of tools or techniques which provide enough mechanical advantage to pose a serious risk of <br /> damaging a well. The same policy prohibits introducing foreign materials into a well which could <br /> carry contaminants into the groundwater. In keeping with this policy, our personnel avoid <br /> surging with slugs of effluent water, or jetting with unfiltered air unless these actions are <br /> specifically requested by a registered professional who is cognizant of the problems and hazards <br /> that accompany the action. In a similar vein, our personnel will, whenever possible, avoid <br /> development actions that are likely to seal clay formations or promote bridging, and make every <br /> attempt to call obvious indication of such conditions to the attention of the project geologist so <br /> that a different regimen can be selected. <br /> Effluent Materials <br /> Groundwater well sampling protocols call for the evacuation of a sufficient volume <br /> of water from the well to insure that the sample is collected from the water that has been newly <br /> drawn into the well from the surrounding geologic formation. <br /> Well development routinely generates as much or more effluent water as does routine evacuation <br /> prior to monitoring. In some cases very large amounts of water must be removed from the well <br /> before a satisfactory level of development has been achieved. The effluent water from these <br /> development actions must be contained. Blaine Tech Services, Inc. will place this water in <br /> appropriate containers of the client's choice or bring new DOT 17 E drums to the site which are <br /> appropriate for the containment of the effluent materials. <br /> Decontamination <br /> All apparatus is brought to the site in clean and serviceable condition. The equipment will be <br /> decontaminated after use in each well and before leaving the site. Decontamination consists of <br /> complete disassembly of the device to a point where a jet of stem cleaner water can be directed <br /> onto all internal surfaces. Blaine Tech Services, Inc. frequently modifies apparatus to allow <br /> complete disassembly and proper cleaning. <br /> Well Development Report 950802DV Pacific Environmental Group,Inc./ Che%ron 49-4183 1 Lodi Page 4 <br />