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MONITORING AND REPORTIgN PROGRAM NO. BRITISH PETROLEUM OIL COMPANY/ APPLIED AEROSPACE STRUCTURES SITE SAN JOAQUIN COUNTY -2- EPA Analytical Max. Detection Sampling Constituents Method Limit(Fig /1 )4 Frequency Depth to Groundwater --- --- Quarterly Volatile Organic Compounds 8021B 0.5 See Above ` All wells will be monitored quarterly for water levels and the presence and thickness of free product. 2 Wells will be sampled semi-annually during the first (Jan. -Mar.) and third (July -Sep.) quarters. 3 Wells will be sampled annually during the third quarter 4 For nondetectable results. 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. Semi-annual reports shall be submitted to the Board by the 1 st day of the second month following the end of each reporting period (i.e., by 1 May and 1 November) until such time as the Executive Officer determines that the reports are no longer necessary. Each quarterly 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; (b) field logs that contain, at a minimum, water quality parameters measured before, during, and after purging, method of purging, depth of water, volume of water purged, etc.; (c) groundwater contour maps for all groundwater zones, if applicable; D It T rt SA7VIPLING FREQUENCY' Quarterly Semi-annually 3 Annually Wells MW -5R MW -6 MW -11 MW -4 MW -5 MW -6 MW -7 MW -12 New Wells MW -9 MW -10 MW -11 MW -12 MW -13 MW -14 EPA Analytical Max. Detection Sampling Constituents Method Limit(Fig /1 )4 Frequency Depth to Groundwater --- --- Quarterly Volatile Organic Compounds 8021B 0.5 See Above ` All wells will be monitored quarterly for water levels and the presence and thickness of free product. 2 Wells will be sampled semi-annually during the first (Jan. -Mar.) and third (July -Sep.) quarters. 3 Wells will be sampled annually during the third quarter 4 For nondetectable results. 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. Semi-annual reports shall be submitted to the Board by the 1 st day of the second month following the end of each reporting period (i.e., by 1 May and 1 November) until such time as the Executive Officer determines that the reports are no longer necessary. Each quarterly 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; (b) field logs that contain, at a minimum, water quality parameters measured before, during, and after purging, method of purging, depth of water, volume of water purged, etc.; (c) groundwater contour maps for all groundwater zones, if applicable; D It T