SITE INFORMATION AND CORRESPONDENCE

Home Browse Search

REVISED MONITORING AND REPORTING PROGRAM NO.93-701 - 2 GEWEKE LAND DEVELOPMENT AND MARKETING SAN JOAQUIN COUNTY SAMPLING FREQUENCY Quarterly Annually Wells MW-7, MW-8, MW-9, MW-12, MW-14, and All Wells New Wells Annual sampling will occur in the first quarter of each calendar year. 2 New wells will be sampled quarterly for a minimum of one year. If a new well is non-detect for all constituents at detection limits listed below, the sampling frequency for that well may be changed from quarterly to annually. T MIT, I EPA Analytical Max. Detection SamplingK � � � ti Y Constituents Method Limit(µg/1)1 Frequency Depth to Groundwater --- --- Quarterly Total Petroleum Hydrocarbons 8015M 50 Quarterly Benzene 8020 or 8260B 1.0 Quarterly Toluene 8020 or 8260B 1.0 Quarterly Ethyl benzene 8020 or 8260B 1.0 Quarterly Xylenes 8020 or 8260B 1.0 Quarterly 1,2-dichloroethane 8260B 0.5 Quarterly TBA 8260B 5.0 Quarterly Volatile Organic Compoundsz 8260B 1.0 to 5.0 Annually MTBE' 8260B 1.0 Annually TAME' 8260B 1.0 Annually DIPE' 8260B 1.0 Annually ETBE' 8260B 1.0 Annually For non-detectable results. 2 Complete a full 8260B analyses, and report all peaks. ' Fuel oxygenates, including MTBE,tertiary amyl methyl ether(TAME), di-isopropyl ether(DIPE),and ethyl tertiary butyl ether(ETBE) shall be analyzed annually in the first quarter monitoring event. If a fuel oxygenate is detected, it shall be added to the quarterly monitoring program for the well in which it was detected. 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,