SITE INFORMATION AND CORRESPONDENCE

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REVISED MONITORING AND REPORTING PROGRAM NO. 93-701 -3 - GEWEKE LAND DEVELOPMENT AND MARKETING SAN JOAQUIN COUNTY the Discharger shall notify the Board within 48 hours of any unscheduled shutdown of any remediation 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. Quarterly reports shall be submitted to the Board by the 201h day of the month following the end of each calendar quarter(i.e., by 20 April, 20 July, 20 October, and 20 January) until such time as the Executive Officer determines that the reports are no longer necessary. Each quarterly report is to include the following minimum information: (a) a description of the groundwater sampling event, including field logs. At a minimum, field logs shall contain water quality parameters measured before, during, and after purging, method of purging, depth of water, volume of water purged, etc.; (b) groundwater contour maps for all groundwater zones, if applicable; (c) isocontour contaminant concentration maps for all groundwater zones, if applicable; (d) a table(s) listing all monitoring well details including: well number, date installed, casing diameter, casing material, slot size, surveyed elevation, reference elevation, top and bottom of screen, top and bottom of filter pack, and aquifer zone. The screen and filter pack intervals information may be presented graphically in a figure. (e) a table or groundwater flow diagram showing historical flow directions and gradients; (f) cumulative data tables containing the water quality analytical results, depth to groundwater, and groundwater elevations; (g) a copy of the laboratory analytical data report; (h) if applicable, the status of any ongoing remediation, including cumulative information on the mass of contaminant removed from the subsurface, system operating time, the effectiveness of the remediation system, and any field notes pertaining to the operation and maintenance of the system; and (i) if applicable, the reasons for and duration of all interruptions in the operation of any remediation system, and actions planned or taken to correct and prevent interruptions. An annual report shall be submitted to the Board by 20 April of each year. This report shall contain an evaluation of the effectiveness and progress of the investigation and remediation. The annual report shall contain the following minimum information: (a) both tabular and graphical summaries of all data obtained during the previous year;