SITE INFORMATION AND CORRESPONDENCE

Home Browse Search

a MONITORING AND REPORT•PROGRAM NO. R5-2004-0805 • -2- ARNOLD 2- ARNOLD HOF,FORMER CAL FARM SUPPLY FACILITY SAN JOAQUIN COUNTY EPA Practical Analytical Quantitation Sampling Constituents Method Limit' Monitoring Wells Frequency Depth to Groundwater --- 0.01 feet MW-1,MW-2, Annuall MW-3,MW-4, MW-5, MW-7, MW-8Z, and MW-92 Nitrate as Nitrogen 300.0 0.5 mg/1 MW-1,MW-2, Annually MW-3,MW-4, MW-5,and MW-7 Total Petroleum 8015M 50 ug/I MW-1 Annually Hydrocarbons as Diesel Total Petroleum 8015M 50 ug/I MW-1 Annually' Hydrocarbons as Gasoline Methyl tert-butyl ether 8260B 0.5 ug/l MW-I and MW-5 Annually; (MTBE) Beta-benzene hexachloride 8081A 0.1 ug/I MW-3 Annually All concentrations between the Method Detection Limit and the Practical Quantitation Limit shall be reported as trace. 2 When MW-8 and MW-9 are destroyed to the satisfaction of San Joaquin County Public Health Dept.,they may be removed from the monitoring program. 'In the third quarter(July-September). REPORTING When reporting data, the Discharger shall arrange the information in tabular form so that the date, the constituents, and the concentrations are readily discernible. The data shall be summarized in such a manner as to illustrate clearly the compliance with this Order. In addition, the Discharger shall notify the Board within 48 hours of any unscheduled shutdown of any soil vapor and/or groundwater extraction system. As required by the California Business and Professions Code Sections 6735, 7835, and 7835.1, all reports shall be prepared by a registered professional or their subordinate and signed by the registered professional. Annual reports shall be submitted to the Board by 1 November of each year until such time as the Executive Officer determines that the reports are no longer necessary. Each annual report shall include the following minimum information: (a) a description and discussion of the groundwater sampling event and results, including trends in the concentrations of pollutants and groundwater elevations in the wells, how and when samples were collected, and whether the pollutant plume(s) is delineated;