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MONITORING AND REPORTING PROGRAM NO.5-01-269,Revision 2 -3- KEARNEY-NATIONAL,INC.AND ALPINE BUILDERS,INC. FORMER KEARNEY-KPF FACILITY GROUNDWATER TREATMENT AND DISPOSAL SYSTEM SAN JOAQUIN COUNTY Extraction Well Monitoring The volume of extracted groundwater also shall be provided in quarterly monitoring reports as well as monthly reports. Sample collection and analysis shall follow standard EPA protocol. Extraction wells shall be monitored according to the following program: Type of Sampling Reporting Constituent Units Sample Frequency Freouency Volatile Organic Compounds 1,2 µg/1 Grab Quarterly Quarterly Electrical Conductivity(Field) µmhos/cm Grab Quarterly Quarterly Total Dissolved Solids mg/1 Grab Quarterly Quarterly PH (Field) pH units Grab Quarterly Quarterly Temperature (Field) 'Celsius Grab Quarterly Quarterly Total Volume of Water Extracted Gallons Continuous Monthly Monthly Extraction Rate at Time of Sampling Gpm Grab Monthly Monthly Average Extraction Rate (since last sampling) Gpm Continuous Monthly Monthly Pressure at Time of Sampling Psig Grab Monthly Monthly Water Level 0.01 feet msl Grab Monthly Monthly 1 Required analytical method shall be either USEPA Method 8260B or 8021B and include 1,4-dioxane analysis. The maximum detection limits must meet the lowest reporting limit in the State Water Resources Control Board Policy for Implementation of Toxics Standard for Inland Surface Waters,Enclosed Bays and Estuaries of California(Appendix 4, minimum levels)or Department of Health Services detection limits for purposes of reporting(DLRs). 2 Analysis must include 1,4-dioxane which shall be analyzed be either USEPA Method 8260B or 8270C. GROUNDWATER MONITORING All monitoring wells shall be monitored according to the requirements listed in Monitoring and Reporting Program No. R5-2003-0838, unless the well is being used as an extraction or injection well, in which case sampling shall be in accordance with the extraction or injection well monitoring listed in this MRP. REPORTING In reporting monitoring data, the Discharger shall arrange the data in tabular form so that the date, sample type (e.g., influent, effluent, 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 at the locations specified in the MRP shall also be reported to the Regional Board. In addition, the Discharger shall notify the Board within 48 hours of any unscheduled shutdown of the groundwater extraction system.