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Permit No. CO-0032638 Page 10 13. "Total Metals" means the concentration of metals determined on an unfiltered sample following vigorous digestion (Section 4.1.3), or the sum of the concentrations of metals in both the dissolved and suspended fractions, as described in "Manual of Methods for Chemical Analysis of Water and Wastes," U.S. Enviromnental Protection Agency, March 1979, or its equivalent. 14. "Total Recoverable Metals" means that portion of a water and suspended sediment sample measured by the total recoverable analytical procedure described in "Methods for Chemical Analysrs of Water and Wastes, " U.S. Enviromnental Protection Agency, March 1979 or its equivalent. 15. "Visual" observation is observing the discharge to check for the presence of a visible sheen or floating oil. 16. "Water Quality Control Division" or "Division" means the state Water Quality Control Division as established in 25-8-101 et al.) Additional relevant definitions are found in the Colorado Water Quality Control Act, CRS §§ 25-8-101 et sec .., the Colorado Discharge Permit System Regulations, Regulation 61 (5 CCR 1002-61) and other applicable regulations. D. GENERAL MONITORING, SAMPLING AND REPORTING REQUIREMENTS 1. Routine Reporting of Data Reporting of the data gathered in compliance with Part LB.1 shall be on a monthly basis. Reporting of all data gathered shall comply with the requirements of Part LE. (General Requirements). Monitoring results shall be summarized for each calendar month 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 following month (for example, the DMR for the first calendaz quarter must be received by the Division by April 28th). If no discharge occurs during the 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 Water Quality Control Division WQCD-P-B2 4300 Cherry Creek Drive South Denver, Colorado 80246-1530 The additional copies are for the pemtittee records. The Discharge Monitoring Report forms shall be filled out accurately and completely in accordance with requirements of this permit and the instmctions on the forms. They shall be signed by an authorized person as identified in Part LE.6. Calculations for all limitations which require the averaging of measurements shall utilize an arithmetic mean unless otherwise specified by the Division in the pemtit. 2. Representative Sampling Samples and measurements taken as required herein shall be representative of the volume and nature of the monitored discharge. All samples shall be taken at the monitoring points specified in this permit and, unless otherwise specified, before the effluent joins or is diluted by any other wastestream, body of water, or substance. Monitoring points shall not be changed without notification to and approval by the Division. If the permittee monitors at the point of dischazge any pollutant limited by the permit more frequently than required by the permit, using approved test procedures or as specified in the permit, the result of this monitoring shall be included in the calculation and reporting of data [o the Division.