SITE INFORMATION AND CORRESPONDENCE

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REVISED MONITORING AND RATING PR • OGRAM NO. 94-806 _2_ KINDER MORGAN ENERGY PARTNERS,L.P. THROUGH ITS OPERATING PARTNER SFPP L.P. HOLT PETROLEUM RELEASE SITE SAN JOAQUIN COUNTY Analytical Maximum Sampling Constituent Method Detection Limit' Frequency Methyl t-butyl ether 8260 0.5 µg/1 Quarterly Petroleum Fuel Oxygenates 8260 0.5µg/l Quarterly' Total Dissolved Lead 7421 5.0 µg/1 Quarterly' For non-detectable results. ' If petroleum fuel oxygenates are not detected during two quarters of monitoring,then the Discharger shall analyze for these constituents on an annual basis. ' If lead is not detected during two quarters of monitoring,then the Discharger shall not be required to continue analyzing for this constituent. PRIVATE WELL MONITORING Unless refused access by the property owner(s), the Discharger shall sample any private wells that are within 500 feet of the down- or side-gradient edge of the contaminated area. These wells shall be sampled at the same frequency and for the same constituents as the monitoring wells, except depth to groundwater. The Discharger shall monitor future placement of water supply wells near this release site and add these wells when appropriate. The Discharger is to notify the Board as soon as it learns that a private well contains any detectable constituents of concern. Immediate confirmation samples must be collected and the Board apprised of the 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 the 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. Quarterly reports shall be submitted to the Board by the 30th day of the month following the end of each calendar quarter (i.e., by 30 January, 30 April, 30 July, and 30 October) 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 quarterly 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 feasible; (c) isocontour contaminant concentration maps for all groundwater zones;