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s 0 <br /> CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD <br /> CENTRAL VALLEY REGION <br /> MONITORING AND REPORTING PROGRAM NO. 5-01-172 <br /> FOR <br /> EAST-SIDE WINERY <br /> dba OAK RIDGE VINEYARDS <br /> SAN JOAQUIN COUNTY <br /> This monitoring and reporting program (MRP) presents requirements for monitoring of the effluent, <br /> wastewater ponds, and groundwater. This MRP is issued pursuant to Water Code Section 13267. The <br /> Discharger shall not implement any changes to this MRP unless and until a revised MRP is issued by the <br /> Executive Officer. Specific sample station locations shall be approved by Regional Board staff prior to <br /> implementation of sampling activities. <br /> All wastewater samples should be representative of the volume and nature of the discharge. The time, <br /> date, and location of each grab sample shall be recorded on the sample chain of custody form. <br /> SEPTIC TANK MONITORING <br /> Septic tanks shall be inspected and pumped as described below. Inspections of sludge and scum depth <br /> are not required if the tanks are pumped at least quarterly. Septic tank monitoring shall begin by <br /> 21 September 2001. <br /> Inspection and <br /> Parameter Units Type of Measurement Reporting Frequency <br /> Sludge depth and scum thickness Feet Staff Gauge Quarterly <br /> in each compartment of each septic tank. <br /> Distance between bottom of scum Inches Staff gauge Quarterly <br /> layer and bottom of outlet device. <br /> Distance between top of sludge layer Inches Staff gauge Quarterly <br /> and bottom of outlet device. <br /> Septic tanks shall be pumped when any one of the following conditions exist or may occur before the <br /> next inspection: <br /> a. The combined thickness of sludge and scum exceeds one-third of the tank depth of the first <br /> compartment: or, <br /> b. The scum layer is within three inches of the outlet device; or, <br /> c. The sludge layer is within eight inches of the outlet device. <br /> LEACHFIELD MONITORING <br /> The domestic wastewater systems will be visually monitored. Leachfield monitoring will consist of <br /> visual inspection of the leachfield and nearby area. The leachfield shall be inspected on a monthly <br />