SITE INFORMATION AND CORRESPONDENCE CASE 2

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MONITORING AND REPORTING PROGRAM NO.R5-2003-0141 -2- CALIFORNIA NATURAL PRODUCTS WASTEWATER TREATMENT FACILITY SAN JOAQUIN COUNTY Sampling Reporting Constituents Units Type of Sample Frequency Freguencv Monthly Average Flow gpd Continuous Daily Monthly Annual Average Flow gpd Continuous Daily Monthly Flow to Manteca WWTP gpd Continuous Daily Monthly LAND APPLICATION AREA MONITORING Application of wastewater to the land application areas and landscaped area shall be monitored to prevent overloading the area with wastewater constituents, which can cause objectionable odors and/or groundwater degradation. For each application site, the following parameters shall be calculated and reported in the monthly monitoring reports. Sampling Reporting Constituents Units Type of Sample Frequency Frequency Application Area acres Measured Daily Monthly Hydraulic Loading Rate inches/acre-month Calculated Daily Monthly BODS Loading Rate lbs/acre-day Calculated' Weekly Monthly Total Nitrogen Loading Rate lbs/acre-month Calculated Monthly Monthly Cumulative Nitrogen Load lbs/acre-year Calculated - Monthly Total Dissolved Solids lbs/acre-year Calculated Monthly Monthly Runoff Visual Inspection Observation Dail y3 Monthly BOD5 loading shall be calculated using the daily applied volume of wastewater, estimated daily application area, and the most recent results of effluent BOD5. z Total nitrogen loading rates shall be calculated using the daily applied volume of wastewater, estimated daily application area, and the most recent results of total nitrogen. 3 Runoff monitoring of the landscaped areas shall be performed when irrigation of the areas occurs. Frequency of monitoring during the day shall be sufficient to determine if runoff is occurring. In addition, the Discharger shall maintain a log of discharges to the land application area and landscaped area. Observations shall be noted and shall record which check is receiving wastewater, observations of ponding water, soil clogging, odors, insects, or other potential nuisance conditions. The notations shall also document any corrective actions taken. A copy of the notations recorded each month shall be submitted along with monthly monitoring reports. LAND APPLICATION AREA SOILS MONITORING The Discharger shall establish, with concurrence of Board staff, four soil profile monitoring locations and one representative background location(i.e., in an area that historically has not received process wastewater) in the 29.7, 10.1 and 16.0 acre land application areas. The samples shall be collected and analyzed for at least the following constituents, and at the following frequency: