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PART 1 Page 9 Permit No. CO-003877G B. MONITORING REQUIREMENTS i. Freauencv and Sample Tvpe (continued) (f} Oil and Grease Monitorine For every ou[fall with oil and grease monitoring, in the event an oil sheen or floating oil is observed, a grab sample shall be collected, analyzed, and reported on the appropriate DMR. In addition, corrective action shall be taken immediately to mitigate the discharge of oil and grease. A description of the corrective action taken should be included with the DMR. 2. ~ortine of Data Reporting of the data gathered in compliance with Pert I.B.1 shell be on a quarterly basis. Monitoring results shall be summarized for each calendar quarter and reported on Division approved discharge monitoring report (DMR) forms (EPA form 3320-1). The forms shall be mailed to the agencies listed below so they are received no later than the 28th day of the month following the end of the quarter (for example, the DMR for the first calendar quarter must be received by the Division by April 28th). if no discharge occurs during [he reporting period, 'No Discharge" shall be reported. The DMR forms consist of four pages -the top 'original" copy, and three attached no-carbon-required copies. After the DMR form has been filled out and signed, the four copies must be separated and distributed as follows: The first original signed copy of each discharge monitoring report (DMR) shall be submitted to the Division at the following address: Colorado Department of Public Health and Environment WQCD-PE-B2 4300 Cherry Creek Drive South Denver, Colorado 80222-1530 The first duplicate signed copy of each discharge monitoring report (DMR) shall be submitted to the followinc acency: U.S. Environmental Protection Agency Water Management Division NPDES Branch 8WM-C 999 ISth Street, Suite 500 Denver, CO 80202-2466 The third and fourth copies are for the pennittee records. The Discharge Monitoring Report forms shall he filled out accurately and completely in accordance with requirements of this permit and the instructions on the forms. They shall be signed by an authorized person as identified in Part I.D. 3. Acute WET Tectine - Outfalls 002, 004 and 011 (a) Testin¢ and Reportine Requirements Tests shall be done at the frequency listed in Part I.B.1. Test results shall be reported along with the Discharge Monitoring Report (DMR) submitted for the reporting period during which [he sample was taken. (i.e., WET testine results for the first calendar quarter ending March 31 shall be reported with the DMR due April 28.) The results shall be submitted on the Acute Toxicity Test report form, available from the Division. Copies of these reports are to be submitted to both the Division and EPA along with the DMR. INnHI' 4/9/93