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MONITORING AND REPORTING PROGRAM NO. 5-01-055 -2 - TRI 2 - TRI VALLEY GROWERS PLANT NO.4 STOCKTON,SAN JOAQUIN COUNTY Constituents Units Type of Sample Sampling Frequency Reporting Frequency Total Kjeldahl Nitrogen mg/l Grab Monthly Monthly Total Dissolved Solids mg/l Grab Monthly Monthly pH S.U. Grab Monthly Monthly LAND APPLICATION AREA MONITORING Application of wastewater to the land application area shall be monitored to prevent overloading the area with wastewater constituents which can cause objectionable odors and/or groundwater degradation. The following parameters shall be calculated and reported in the monthly monitoring reports. Constituents Units Type of Sample Reporting Frequency Application Area acres Measured Monthly Hydraulic Loading Rate gallons/acre- day Calculated Monthly BODS Loading Rate lbs/acre- day Calculated' Monthly Total Nitrogen Loading Rate lbs/acre- day Calculated Monthly BOD5 loading shall be calculated using the daily applied volume of wastewater, estimated daily application area, and applicable results of effluent BODS. 2 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. In addition, the Discharger shall maintain a log of discharges to the land application area and landscaped area. Notations shall be made in a bound log book 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 entries made in the log during 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). The samples shall be collected and analyzed for at least the following constituents immediately upon implementation of this MRP, and at the following frequency thereafter: Constituents Units Soil Profile Frequency Soil pH pH Standard' Annually2 Volatile Solids %Total Weight Standard' Annually, Cation Exchange Capacity meq/100 g Standard' Annually, Nitrate (as N) mg/kg Standard' Annually2 Kjeldahl-Nitrogen(as N) mg/kg Standard' Annually, 1 Samples shall be collected at 0.5 feet, 3 feet, and 6 feet. 2 Samples shall be collected in September.