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Section 3 Monitoring Network 3.1 MONITORING WELL LOCATIONS AND RATIONALE The purpose of groundwater monitoring is to provide a measurement of compliance with the State Antidegradation Policy and to establish background groundwater quality prior to potential impacts associated with proposed wastewater effluent storage and disposal activities. An effective groundwater monitoring network will provide at least one clearly"up-gradient"well and at least two "down-gradient" wells within each geographically distinct storage or disposal areas. The monitoring network should be designed to allow for normal seasonal fluctuations in groundwater elevation and horizontal groundwater gradient direction. Additional wells are commonly required when strong seasonal changes in groundwater gradient are suspected and when hydrogeologic boundaries, or other conditions,require additional wells to adequately characterize the site. Such wells must be designed and located to provide representative samples of groundwater beneath the proposed wastewater disposal site and not create a vertical conduit for contamination of deeper groundwater. Figure 2 shows the proposed locations of new monitoring wells MW-1 through MW-8 within the Main Stone property. 3.2 EQUIPMENT DECONTAMINATION PROCEDURES Equipment decontamination will comprise, at a minimum, of a hot water pressure wash of the drilling equipment. As a precaution against cross-contamination between boreholes, the drilling equipment will be decontaminated prior to the start of drilling of the first monitoring well and between each successive monitoring well borehole. 3.3 HEALTH AND SAFETY PLAN 3.3.1 PERSONAL PROTECTIVE EQUIPMENT Currently there is no onsite wastewater treatment or disposal structures or activities however there is wastewater treatment and disposal operations occurring on adjacent properties. Additionally, there are known fuel and solvent releases in the area. Level D personal protection equipment comprising of a standard work uniform(coveralls,hard hat, steel-toed boots, safety glasses,hearing protection,nitrile gloves, etc.) shall be in practice during work at the site. The practice of good personal hygiene by crew is warranted and will further reduce the exposure risk. Affected areas of the body shall be washed with clean soapy water followed by a clean water rinse. 3.3.2 EMERGENCY PROCEDURES The telephone numbers of the appropriate entities to be contacted in case of emergency are as follows: May 2006 Main Stone Property 3-1 Effluent Storage and Disposal Site Hydrogeologic Investigation Workplan