SITE INFORMATION AND CORRESPONDENCE CASE 2

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MONITORING AND REPORTING PROGRAM -3- CALIFORNIA NATURAL PRODUCTS WASTEWATER TREATMENT FACILITY SAN JOAQUIN COUNTY GROUNDWATER MONITORING Prior to completion and/or sampling of any groundwater monitoring wells, the Discharger shall submit plans and specifications to the 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 or purging, equilibrated groundwater elevations shall be measured to the nearest 0.01 foot. Depth to groundwater measurements shall be collected from all wells on the same day. The wells shall be purged at least three well volumes until pH and electrical conductivity have stabilized. Sample collection shall follow standard EPA analytical method protocols. Groundwater monitoring shall include, at a minimum, the following: Sampling Reporting Constituent Units Type of Sample Frequencv Frequencv Depth to Groundwater 0.01 ft Measurement Quarterly Quarterly Groundwater Elevation 0.01 ft Calculated Quarterly Quarterly Gradient ft/ft Calculated Quarterly Quarterly Gradient Direction Degrees Calculated Quarterly Quarterly Groundwater elevation 0.01 feet Measurement Quarterly Quarterly PH S.U. Grab Quarterly Quarterly Total Dissolved Solids mg/l Grab Quarterly Quarterly Nitrate as Nitrogen mg/1 Grab Quarterly Quarterly Total Kjeldahl Nitrogen mg/l Grab Quarterly Quarterly Ammonia as Nitrogen mg/l Grab Quarterly Quarterly Total Coliform Organisms MPN/100 ml Grab Quarterl� Quarterl� Trihalomethanesl µg/1 Grab Annual Annual Analysis for this parameter shall be performed using EPA Method 8010 or equivalent. 2 Annual samples shall be collected in the fust quarter(January-March)sampling event. REPORTING In reporting monitoring data, the Discharger shall arrange the data in tabular form so that the date, sample type (e.g., effluent, groundwater, etc.), and reported analytical result for each sample are readily discernible. The data shall be summarized in such a manner to clearly illustrate compliance with waste discharge requirements and spatial or temporal trends, as applicable. The results of any monitoring done more frequently than required by the Monitoring and Reporting Program, including wastewater data collected for industrial wastewater discharge permits, shall be reported in the next scheduled monitoring report. All analytical data collected that is required by this MRP shall be analyzed by a California licensed laboratory. As required by the California Business and Professions Code Sections 6735, 7835, and 7835.1, all groundwater monitoring reports shall be prepared under the direct supervision of a California Registered Engineer or Geologist and signed by the registered professional.