Laserfiche WebLink
Page Nu. fi <br />Permit No. COG-850000 <br />B. EFFLUENT LFMITATIONS AND MONITORING REQUIREMENTS , <br />2. Stormwater Management Plan (SWMP) (continued) <br />• The permittee shall amend the plan whenever there is a change in design, construction, operation, or maintenance which has <br />significant effect on the potential for [he discharge of pollutants to the waters of the State, or if the SWMP proves to be <br />ineffective in achieving the general objectives of controlling pollutants in stormwaterdischarges associated with industtial <br />activity. The Division in the same manner as described above, may review amendments to the plan. It is the permittee's <br />responsibility to notify the Colorado Division ofMining and Geology (formerly the Mined Land Reclamation Division) ofany <br />significant changes at their site resulting from the implementation of the SWMP. <br />d) SWMP Availability <br />A copy of [he SWMP shall be provided to [he Division, the Colorado Division of Mining, and Geology (CDMG), and/or to EPA <br />upon request, and within the period specified in the request. <br />All SWMPs required under this permit aze considered reports that shall be available to the public under Section 308(b) of the CWA. <br />. The owner or operator of a facility with stormwater discharges covered by this permit shall make plans available to members of the <br />public upon request. However, the permittee may claim any portion of a stormwater pollution plan as confidential in accordance <br />with 40 CFR Part 2. <br />e) Allowable Non-Stormwater Discharges <br />The plan shall identify all sources of imgation return flow and natural uncontaminated spring water that are combined with <br />stotrrtwater dischazges associated with industrial activity. The plan shall identify and ensure the implementation of appropriate <br />measures to prevent pollution of the non-stormwater component(s) of [he discharge. <br />Irrigation return flow and natural spring water, which mixes with mine drainage or process waterbecomes mine drainage or process <br />water. <br />f) Emnlovee Education <br />. The pemrittee shall develop and implement employee education programs to inform personnel at all levels of responsibility of tl. <br />components and goals of the SWMP. Education should address topics such as spill response, good housekeeping, and material <br />management practices. The pennittee shall identify periodic dates for such instruction. <br />Monitoring Rectuirements <br />In order to obtain an indication of the probable compliance or noncompliance with the effluent limitations specified in Part I.B.1, the <br />pertnittee shall monitor all effluent pazameters at the following frequencies. <br />a) Active Mining Outfalls <br />Flow, MGD Weekly Instantaneous or <br />TSS, mg/I Monthly Grab <br />Total Iron, mg/1 Monthly Grab <br />Total Manganese, mg/1 Monthly Grab <br />Settleable Solids, mUl Monthly Grab <br />Oil and Grease, mg/1 Weekly Visual <br />pH, s.u. Weekly In-situ <br />Total Dissolved Solids, mg/1 Quarterly Grab <br />Total Phosphorus (as P), mg/1 Quarterly Grab <br />b) Post-Mining Outfalls <br />Settleable Solids, mUl <br />• Oil attd Grease, mg/I <br />pH, s.u. <br />Total Dissolved Solids, mg/1 <br />Total Phosphorus (as P), mg/1 <br />Monthly Instantaneous or Continuous <br />Monthly Grab <br />Monthly Visual <br />Monthly In-situ <br />Quarterly Grab <br />Quarterly Grab <br />