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MONITORING AND REPORTING PROGRAM NO. R5-2003-0178 -3- MORADA PRODUCE COMPANY LINDEN PACKING SHED SAN JOAQUIN COUNTY Sampling Reporting Constituents Units Type of Sample Frequency Frequency Mix Ratio -- Calculated Daily Monthly BODS Loading Rate lbs/acre-day Calculated' Monthly Monthly Total Nitrogen Loading Rate lbs/acre-month Calculated4 Monthly Monthly Cumulative Nitrogen lbs/acre-year Calculated -- Monthly Loading Rate Total Dissolved Solids lbs/acre-year Calculated Monthly Monthly Loading Rate Runoff Visual Inspection Observation Daily' Monthly 1 BODS loading shall be calculated using the daily applied volume of wastewater,estimated daily application area,and the most recent results of effluent BODS. z Wastewater Loading Rate and Supplemental Irrigation shall also be reported in gallons. 3 Mix ratio is the ratio Supplemental Irrigation divided by Wastewater Loading Rate. ° 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(sum of Nitrate as Nitrogen and Total Kjeldahl Nitrogen). 5 Runoff monitoring 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. 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. GROUNDWATER MONITORING The following monitoring requirement is only necessary if the Discharger installs groundwater monitoring wells as a result of the Effluent Evaluation. If wells are installed, then this program shall be effective beginning with the second quarter of 2004. If the Discharger elects to install lysimeters instead of groundwater monitoring wells, then this same program is in effect,with the exception of the first four items in the table below. If lysimeters are installed, then this program is also effective beginning with the second quarter of 2004. Prior to construction and/or sampling of any groundwater monitoring wells, the Discharger shall submit plans and specifications to the Regional Board for review and approval. Once installed, all new wells shall be added to the MRP and shall be sampled and analyzed according to the schedule below. Prior to sampling, the groundwater elevations shall be measured and the wells shall be purged at least three well volumes until temperature,pH and electrical conductivity have stabilized. Depth to groundwater shall be measured to the nearest 0.01 feet. Samples shall be collected using standard EPA methods. Groundwater monitoring shall include, at a minimum, the following: