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4.9 Notification of changed discharge <br /> All users shall promptly notify the City in advance of any substantial change in the volume <br /> or character of pollutants in their discharge, including significant manufacturing process <br /> changes, pretreatment modifications, and the listed or characteristic hazardous wastes for <br /> which the user has submitted initial notification under 40 CFR 403.12 (p). <br /> 4.10 TTO Reporting. <br /> Categorical users which are required by EPA to eliminate and/or reduce the levels of toxic <br /> organics (TTOs) discharged into the sewer system must follow the Categorical <br /> Pretreatment Standards for that industry. Those users must also meet the following <br /> requirements: <br /> A. Must sample, as part of the initial application requirements, for all the organics <br /> listed under the TTO limit (no exceptions); <br /> B. May submit a statement that no TTOs are used at the facility and/or develop a <br /> solvent management plan in lieu of continuously monitoring for TTO, if authorized <br /> by the Director: <br /> If allowed to submit a statement or develop a solvent management plan, the user <br /> must routinely submit a certification statement as part of its self-monitoring report <br /> that there has been no dumping of concentrated toxic organic into the wastewater <br /> and that it is implementing a solvent management plan as approved by the City. <br /> The Director may require the development and implementation of a solvent <br /> management plan in addition to monitoring for TTO. <br /> 4.11 Reports from Unpermitted Users <br /> All users not required to obtain a wastewater discharge permit shall provide appropriate <br /> reports to the City as the Director may require. <br /> 4.12 Record Keeping <br /> Users subject to the reporting requirements of this ordinance shall retain, and make <br /> available for inspection and copying, all records of information obtained pursuant to any <br /> monitoring activities required by this ordinance and any additional records of information <br /> obtained pursuant to monitoring activities undertaken by the user independent of such <br /> requirements. Records shall include the date, exact place, method, and time of sampling <br /> and the name of the person(s) taking the samples; the dates analyses were performed; who <br /> performed the analyses; the analytical techniques or methods used; and the results of such <br /> analyses. These records shall remain available for a period of at least three (3) years. This <br /> period shall be automatically extended for the duration of any litigation concerning the <br /> user or POTW, or where the user has been specifically notified of a longer retention <br /> period by the Director. <br /> 4.13 Timing <br /> Written reports will be deemed to have been submitted on the date postmarked. For <br /> reports which are not mailed, postage prepaid, into a mail facility serviced by the United <br /> States Postal Service, the date of receipt of the report shall govern. <br /> 33 <br />