SITE INFORMATION AND CORRESPONDENCE

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08/22/2002 12:52 FAX 209 948 0821 KLEINFELDER 1@009 KL EI NF[LDER Add Total Kjeldahl Nitrogen to the list of analytes in Section 3.5. Provide a list of the analytes included in the "General Minerals:"note that sodium must be included in that list. " • Kleitlfelder will add Total Kjeldaltl Nitrogen to the list of analytes. The general Mineral suite consists of the following: bicarbonate alkalinity, carbonate alkalinity, hydroxide alkalinity, calcium, chloride, copper, foaming agents (MBAS), iron, magnesium, manganese, pH, potassium, sodium, specific conductance, sulfate, total dissolved solids, total hardness, and zinc. "7f a slip cup is used on the bottom oj'the well casing, it must he secured using stainless steel Screws. " • Kleinfelder in conjunction with the drilling subcontractor proposes 10 use threaded bottom caps on the monitoring wells. In the event that threaded bottom caps are unavailable and slip caps are used, the slip caps shall be secured with stainless steel screws. In response to the comments made by Ms. Kim Schwab of the RWQCB in regards to WDR Order No. 97-075, the following is presented; "Plate 2 shows a proposed groundwater well location on the north side of the surface impoundment's. It has conte to my attention that the domestic wastewater system is in the vicinity of this proposed well location. Furthermore, during an inspection on 16 October 2001, irrigation of wastewater was occurring in the area immediately north of the surface impoundments. We are concerned that these two activities may have impacted groundwater quality in this area. Please provide detailed information with regards to the two above issues in order to justify this groundwater well location. If appropriate,propose an alternative location that meets The intent of the Detection Monitoring Program of Title 27. - • The domestic wastewater system has been defined by Musco to Kleinfelder. The monitoring well located on the north side of the surface impoundments would not be installed in the ]each field, but would be installed closer to the northern comer of the northern-most surface impoundment. Wastewater is applied to the area north-northwest of the surface impoundments. The placement of the monitoring well in question was chosen to monitor downgradient groundwater conditions of the approximately 35 acre (pasture) area in accordance with WDR 97-037 and to concurrently monitor upgradient groundwater conditions near the surface impoundments. Due to the limited space between the pasture and the surface impoundments and also the location of the domestic wastewater leach field, it appears that this monitoring well location is the only practical location. Musco shall attempt to limit irrigation of wastewater to the area directly north of the surface impoundments. 13498/2002LI48 Page 4 of 6 Copyright 2002,Kleinfelder,Inc. March 0,2002