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' October 1, 2004 <br /> NOA Project Number:LE03-034 <br /> ' We understand the monitoring wells may be installed after staff approval of the workplan. Upon <br /> installation of the monitoring wells, a Report of Results will be submitted to the Board. <br /> 1.0 GENERAL INFORMATION <br /> A California licensed geologist or engineer will oversee the installation of the ground-water <br /> monitoring wells at CSC/SHPI to be consistent with the workplan presented herein. CSC/SHPI <br /> will not proceed with the installation of ground water monitoring wells until it receives written <br /> approval from the Board. <br /> 1.1 Monitoring Well Location and Depth <br /> The basic purpose for installing ground water monitoring wells is to: <br /> 1). Determine the ground-water flow direction and ground-water gradient below the <br /> site. <br /> 2). Monitor for background water quality. Monitor constituents of concern in ground <br /> water below the waste water treatment pond and below the two agricultural <br /> application areas. This will require a minimum of four (4) monitoring well locations. <br /> ' Based on information presented in our Report of Waste Discharge -Additional Required <br /> Information, dated January 28,2004,it is estimated that depth to ground water,based on County <br /> ground water maps from 1994 to 1998,is between 107 feet to 127 feet (NOA,2004) within the local <br /> area. The ground water flow direction is toward the southwest (average 203 degrees) at a gradient of <br /> 0.001 to 0.0008 (about 4 to 5 feet per mile drop). <br /> ' We are proposing the use of four (4) monitoring wells to accomplish the above objectives. Sheet 1 <br /> indicates the proposed locations of the four (4) monitoring wells. <br /> The proposed monitoring well locations were set at a distance of 90 feet or greater from four (4) on- <br /> site production wells. We understand from Ron Kaiser of CSC/SHPI that three (3) of the most <br /> active production wells pump between 126 to 468 gallons per minute up to 16 hours per day during <br /> the busy season. We cannot state with certainty that the production wells will not affect the local <br /> ground water gradients on the property. The proposed locations of the monitoring wells were <br /> selected to be within the two application areas and adjacent to the existing wastewater pond. A <br /> background water quality monitoring well was placed away from existing septic systems and <br /> application areas. <br /> ' 2 .*44 <br />