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PART I
<br />Page 12 of 52
<br />Permit No.: C00000906
<br />determines, that the authorized discharge causes or contributes to an exceedance of applicable water quality
<br />standards, the permittee must take corrective action as required, document the corrective actions as required,
<br />and report the corrective actions to the Division as required (see CORRECTIVE ACTIONS).
<br />If the division becomes aware of information indicating that compliance with the other terms and conditions of this
<br />permit will not control the discharge as necessary to meet applicable water quality standards, the division may
<br />include additional site-specific water quality -based effluent limitation(s) to the discharge.
<br />3. Federal Effluent Limitation Guideline -Sediment Control Plan (Outfalls 004, 011, and 012)
<br />The permittee shall, by September 1, 2015 and annually thereafter, submit proof to the division that the
<br />Sediment Control Plan (SCP) required under Subpart H (40 CFR Part 434.82) for Outfalls 004, 011 and 012, has been
<br />approved by the Colorado Division of Reclamation, Mining, and Safety, and is implemented at the facility.
<br />4. Practice -based Effluent Limitations (Outfalls 004. 007, 008, 010, 011, and 012
<br />Practice -based limitations required by this permit include the following:
<br />a. Minimize Exposure
<br />The permittee must minimize (as defined in Appendix B) the exposure of pollutant sources associated with
<br />manufacturing, processing, and material storage areas (including loading and unloading, storage, disposal,
<br />cleaning, maintenance, and fueling operations) to rain, snow, snowmelt, and runoff. Minimizing exposure may
<br />include locating these industrial materials and activities inside or protecting them with storm resistant
<br />coverings.
<br />b. Good Housekeeping
<br />The permittee must keep clean all areas exposed to stormwater runoff, as necessary to minimize potential
<br />sources of pollutants, using such measures as sweeping at regular intervals, keeping materials orderly and
<br />Labeled, and storing materials in appropriate containers.
<br />c. Maintenance of Control Measures
<br />The permittee must maintain all control measures (structural and non-structural) used to achieve the effluent
<br />limits required by this permit in effective operating condition. The permittee must conduct maintenance of
<br />control measures in accordance with this permit (see CONTROL MEASURES).
<br />d. Spill Prevention and Response Procedures
<br />The permittee must minimize the potential for leaks, spills and other releases that may be exposed to
<br />stormwater and develop plans for effective response to such potential spills. The permittee must at minimum
<br />implement:
<br />i. Procedures for regularly inspecting, testing, maintaining, and repairing all industrial equipment and
<br />systems to avoid situations that may result in leaks, spills, and other releases of pollutants in
<br />stormwater discharged to receiving waters.
<br />ii. Procedures for plainly labeling containers that could be susceptible to spillage or leakage to encourage
<br />proper handling and facilitate rapid response if spills or leaks occur;
<br />iii. Preventative measures such as barriers between material storage and traffic areas, secondary
<br />containment provisions, or procedures for material storage and handling;
<br />iv. Procedures for expeditiously stopping, containing, and cleaning up leaks, spills, and other releases.
<br />Employees who may cause, detect, or respond to a spill or leak must be trained in these procedures
<br />and have necessary spill response equipment available; and
<br />v. Procedures for notification of appropriate facility personnel, emergency response agencies, and
<br />regulatory agencies. Contact information must be in locations that are readily accessible and available.
<br />e. Erosion and Sediment Controls
<br />The permittee must stabilize exposed areas and contain runoff using structural and/or non-structural control
<br />measures to minimize onsite erosion and sedimentation, and the resulting discharge of pollutants. Among other
<br />actions taken to meet this effluent limit, flow velocity dissipation devices must be placed at discharge
<br />locations and within outfall channels where necessary to minimize erosion and/or settle out pollutants.
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