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WASTE DISCHARGE REQUIREMENTS ORDER NO.R5-2002-0220 -10- TEICHERT AGGREGATES TRACY ROCK PLANT SAN JOAQUIN COUNTY contain and treat/dispose/recycle all wastewater. For a concrete batch plant, the workplan shall consider the concentration of soluble metals in wastewater. The constituents of concern shall include all pollutants specified in Title 22 of the California Water Code, Section 66261.24(2)(A), including chromium(VI) compounds. The assessment shall be designed to determine whether the waste will be a designated waste. The workplan shall also specify whether the wastewater discharged from the concrete batch plant, concrete mixing truck rinse water, and other wastewater should be classified as a designated waste. If the concentration of soluble metals will exceed water quality standards, then the Discharger shall submit a Report of Waste Discharge that describes a storage/containrnent system that is capable of storing designated waste in conformance with applicable regulations in Title 27, CCR. The workplan shall clearly demonstrate how the proposed facility modifications will comply with all Discharge Prohibitions, Specifications, and Limitations of this Order and prevent adverse impacts to water quality. d. At least 90 days prior to operation of a concrete plant or an asphalt plant, the Discharger shall submit a report certifying that all wastewater facility modifications necessary to protect water quality have been completed in accordance with the approved workplan. 3. The Discharger shall comply with Monitoring and Reporting Program No. R5-2002-0220,which is a part of this Order, and any revisions thereto as ordered by the Executive Officer. 4. The Discharger shall comply with the "Standard Provisions and Reporting Requirements for Waste Discharge Requirements", dated 1 March 1991, which are attached hereto and by reference a part of this Order. This attachment and its individual paragraphs are commonly referenced as "Standard Provision(s)." 5. The Discharger shall submit to the Regional Board on or before each compliance report due date the specified document, or if appropriate, a written report detailing compliance or noncompliance with the specific schedule date and task. If noncompliance is reported, then the Discharger shall state the reasons for noncompliance and shall provide a schedule to come into compliance. 6. The Discharger shall report promptly to the Regional Board any material change or proposed change in the character, location, or volume of the discharge. 7. In the event of any change in control or ownership of land or waste discharge facilities presently owned or controlled by the Discharger, then the Discharger shall notify the succeeding owner or operator of the existence of this Order by letter, a copy of which shall be forwarded to this office. 8. The Discharger shall comply with all conditions of this Order, including timely submittal of technical and monitoring reports as directed by the Executive Officer. Violations may result in enforcement action, including Regional Board or court orders requiring