ARCHIVED REPORTS_DRAFT ENVIRONMENTAL IMPACT REPORT

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MONITORING AND REPORTING PROGRAM NO.R5-2004-0028 9 MONITORING AND REPORTING PROGRAM NO.R5-2004-0028 10 NPDES NO.CA0081558 NPDES NO.CA0081558 CITY OF MANTECA,CITY OF LATHROP AND DUTRA FARMS CITY OF MANTECA,CITY OF LATHROP AND DUTRA FARMS WASTEWATER QUALITY CONTROL FACILITY WASTEWATER QUALITY CONTROL FACILITY SAN JOAQUIN COUNTY SAN JOAQUIN COUNTY disposal requirements. The report shall include,but is not limited to,an assessment of cumulative metals and nitrogen loadings from all sources,type of crop grown,nitrogen demand,and setback and 3Soluble salts shall be determined using test methods described in Methods of Soil runoff compliance,as well as compliance with pathogen reduction and vector attraction reduction Analysis,Part 2,Chemical and Microbiological Properties,Second Edition,Edited by standards. Page,Miller and Keeney;American Society of Agronomy,Inc.,Soil Science Society of America,Inc.:1982 Page 168 et seq.,or other acceptable test methods with prior Discharger shall submit annually a description of disposal methods,including the following information approval by the Executive Officer. Analytical results shall report the soil/water ratio. related to the disposal methods used at the facility. If more than one method is used,include the percentage of annual biosolids production disposed by each method. °Total Metals shall include analyses for Cadmium,Chromium,Copper,Lead,Nickel,and Zinc. a. For landfill disposal,include(1)the Regional Board's WDR numbers that regulate the landfill(s)used,(2)the present classifications of the landfill(s)used,and(3)the names and GROUNDWATER MONITORING locations of the receiving facility(ies). Prior to construction,plans and specifications for ground water monitoring wells shall be submitted to b. For land application,include(1)location of the site(s),(2)the Regional Board's WDR numbers Regional Board staff for review and approval. Wells shall comply with requirements of the Department that regulate the site(s),(3)the application rate in lbs/year(specify wet or dry),and(4) of Water Resources. Prior to sampling,the groundwater elevations shall be measured and the wells subsequent uses of the land. shall be purged of at least three well volumes until pH and electrical conductivity have stabilized. Samples shall be collected using standard USEPA methods. Groundwater monitoring shall include,at a c. For incineration,include(1)name and location of the site(s)where sludge incineration occurs, minimum: (2)the Regional Board's WDR numbers that regulate the site(s),(3)the disposal method of the ash,and(4)the names and locations of facilities receiving ash(if applicable). d. For composting,include(1)name and location of the site(s)where sludge composting occurs, Constituent Units Type of Sample Sample Frequency and(2)the Regional Board's WDR numbers that regulate the site(s). Depth to Groundwater' Feet Measurement Quarterly SOIL PROFILE MONITORING Groundwater Elevation' Feet Measurement Quarterly A minimum of four representative locations shall be established for soil profile sampling of the fields Total Dissolved Solids mg/1 Grab Quarterly where effluent and sludge are applied. The following shall constitute the monitoring program: Ammonia,as Nitrogen mg/1 Grab Quarterly Nitrate,as Nitrogen mg/I Grab Quarterly Grab Units H Sampling PH Quarterly Measurement Units Soil Profile Frequency p Q y Nitrate Nitrogen mg/kg 4 feet' Annually' Electrical Conductivity'@ 25°C umhos/cm Grab Quarterly Kjeldahl Nitrogen mg/kg 4 feet' Annually' Total Coliform Organisms MPN/100 ml Grab Quarterly Title 22 Metals mg/1 Grab Quarterly Soluble Salts' mg/kg 4 feet' Annua11y2 Total Metals° mg/kg 4 feet' Annually' Groundwater elevation shall be used to calculate the direction and gradient of groundwater flow. Samples shall be collected at 1-foot increments. Elevations shall be measured to the nearest one-hundredth of a foot from mean sea level. The groundwater elevation shall be measured prior to purging the wells. 2Each location shall be sampled during the month of April.