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MONITORING AND REPORTING PROGRAM NO. 2 <br /> CITY OF LATHROP AND METROPOLITAN LIFE INSURANCE COMPANY <br /> WASTEWATER TREATMENT FACILITY NO. 1 (CROSSROADS) <br /> SAN JOQUIN COUNTY <br /> STORAGE POND MONITORING <br /> Each of the storage ponds shall be sampled for the parameters specified below: <br /> Sampling Reporting <br /> Constituent Units Type of Sample Freauencv Freauencv <br /> Dissolved Oxygen mg/1 Grab Weekly Monthly <br /> pH pH units Grab Weekly Monthly <br /> Total Nitrogen mg/1 Grab Monthly Monthly <br /> Total Dissolved Solids mg/1 Grab Monthly Monthly <br /> Volatile Dissolved Solids mg/1 Grab Monthly Monthly <br /> Samples shall be collected at a depth of one foot from each pond in use,opposite the inlet. Samples shall be collected <br /> between 0700 and 0900 hours. <br /> 2 Total Nitrogen shall include all forms of organic and oxidized nitrogen. <br /> DISPOSAL AREA MONITORING <br /> Monitoring of the disposal area shall be conducted daily(during operation) and the results shall be <br /> included in the monthly monitoring report. Evidence of erosion, field saturation, runoff, or the presence <br /> of nuisance conditions shall be noted in the report. Effluent shall also be monitored to ascertain loading <br /> rates at the disposal area. Monitoring of the effluent and the disposal fields shall include the following: <br /> Sampling Reporting <br /> Constituent Units Type of Sample Frequency Freauencv <br /> Flow Gallons Continuous Daily Monthly <br /> Rainfall Inches Measurement Daily Monthly <br /> Acreage Applied' Acres Calculated Daily Monthly <br /> Application Rate2 gal/acre-day Calculated Daily Monthly <br /> BOD lbs/acre-day Calculated Monthly Monthly <br /> Total Nitrogen z lbs/month Calculated Monthly Monthly <br /> Total Dissolved Solidsz lbs/month Calculated Monthly Monthly <br /> Disposal fields shall be identified <br /> 2 For each disposal field <br /> GROUNDWATER MONITORING <br /> Prior to construction and/or sampling of any groundwater monitoring wells, the Discharger shall submit <br /> plans and specifications to the Board for review and approval. Once installed, all new wells shall be <br /> added to the MRP and shall be sampled and analyzed according to the schedule below. <br /> Prior to sampling, the groundwater elevations shall be measured and the wells shall be purged at least <br /> three well volumes until temperature, pH and electrical conductivity have stabilized. Depth to <br /> groundwater shall be measured to the nearest 0.01 feet. Samples shall be collected using standard EPA <br /> methods. Groundwater monitoring shall include, at a minimum, the following: <br />