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PART I Page No. l l Permit No. CO-0044776 C. DEFINITIONS OF TERMS If the sampling frequency is more frequent than monthly: Eliminate the result of TNTC from any further calculations, and use all the other results obtained within that month for reporting purposes. Attach a letter noting that a result of TNTC was obtained, and list all individual analytical results and corresponding sampling dates for that month. Additional relevant definitions are found in the Colorado Water Quality Control Act, CRS §§ 25-8-101 et se°•., the Regulations for the State Discharge Permit System, 5 CCR 1002-2, § 61.0 et ~eq and other applicable regulations. D. SPECIAL REQUIItEMENTS 1. Materials Containment Plan Pursuant to Sections 61.8(3)(8) and (r) of the Colorado Discharge Permit System Regulations, the permittee is required to submit a Materials Containment Plan. Such a plan shall be submitted to [he Division within ninety days after the effective date of this permit and must be implemented. The plan shall include information and procedures for the prevention and containment of spills of materials used, processed or stored at the facility which if spilled would have a reasonable probability of having a visible or otherwise devimental impact on waters of the State ='?'. The plan shall include, but not necessarily be limited to: a. A history of the spills which have occurred in the three years preceding the effective date of this permit. The history shall include a discussion on the cause of the spills and the preventative measures designed to eliminate them from reoccurring; b. A description of the reporting system which will be used to notify, at a minimum, responsible facility management, the Division, the Environmental Protection Agency, downsveam water users within 5 mi]es downstream of the facility, and local health officials; c. A description of preventative facilities (including overall facility plot) which prevent, contain, or treat spills and unplanned discharges; d. A list which includes the volumes or quantities of all materials used, processed, or stored at the facility which represent a potential spill threat to surface waters. The location of stored material shall be indicated on the facility plot submitted for item c; e. An implementation schedule for additional facilities which might be required in item c, but which aze not yet operational; f. A list of available outside convactors, agencies, or other sources which could be utilized in the event of a spill in order to clean up its effects. If the facility is capable of handling spills in-house, this shall be documented in the plan; g. Provision for yearly review and updating of [he contingency plan, plus resubmission of the plan to the Divisio^ if conditions and/or procedures a[ the facility change the original plan. The foregoing provisions shall in no way render inapplicable those requirements imposed by [he Federal Water Pollution Control Act, 33 U.S.C. § 1321, regulations promulgated thereunder, the Colorado Water Quality Convol Act, and regulations promulgated thereunder. It is recommended that this plan be prepared by a professional engineer registered in the State of Colorado.