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CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD CENTRAL VALLEY REGION MONITORING AND REPORTING PROGRAM FOR ORDER NO. R5-2003-0044 GENERAL ORDER FOR LAND DISPOSAL OF GROUNDWATER AND SURFACE WATER FROM CLEANUP OF PETROLEUM FUEL POLLUTION The Discharger shall maintain water quality monitoring systems that are appropriate for detection and corrective action monitoring. Failure to comply with this Program constitutes non-compliance with the Waste Discharge Requirements and with the California Water Code, which can result in the imposition of civil monetary liability. Detection level requirements are noted in Ordered C.1 and acceptable analysis methods are described in Finding 17 of the Waste Discharge Requirements. Influent and effluent samples shall be taken concurrently to demonstrate the effectiveness of the treatment system. The Discharger shall comply with the electronic data submittals required by Provisions E.$ of this Order for influent, effluent, routine and special monitoring, and grab sample analyses. The electronic data submittal is to occur within three working days of the hard copy document submittal. INFLUENT MONITORING Influent samples shall be collected after the last connection before the wastes enter the treatment process. Influent samples should be representative of the volume and nature of the influent. Time of collection of a grab sample shall be recorded. The following shall constitute the influent monitoring program: Constituents Units Sample Fre uencv Total Petroleum Hydrocarbons µg/l Grab Monthly (Gasoline, diesel, motor oil, etc., as applicable) Benzene µg/l Grab Monthly Toluene µg/1 Grab Monthly Ethylbenzene µg/l Grab Monthly Xylenes (total) µg/1 Grab Monthly Methyl tertiary-Butyl Ether (MtBE) µg11 Grab Monthly** Lead(total)* µg11 Grab Monthly Lead(organic) µg/l Grab Monthly Methanol µg11 Grab Monthly* Ethanol µg/1 Grab Monthly** Tertiary Butyl Alcohol (TBA) µg/l Grab Monthly** Di-isopropyl Ether (DIPS) µg11 Grab Monthly** Ethyl Tertiary Butyl Ether(ETBE) µg/i Grab Monthly** Tertiary Amyl Methyl Ether µg/1 Grab Monthly** (TAME)