2019-03-01_INSPECTION - C1982056

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PROCESS LIMITATIONS AND RECORDS 4. This source must be limited to the following maximum consumption, processing and/or operational rates as listed below. Monthly records of the actual process rate must be maintained by the applicant and made available to the Division for inspection upon request. (Reference: Regulation Number 3, Part B, I1.A.4) Process/Consumption Limits AIRS Point Process Parameter Annual Limit 109 1 Underground mining of coal 11,200,000 tons Other production definitions as described in Attachment A. Compliance with the yearly process limits must be determined on a rolling twelve (12) month total. By the end of each month a new twelve-month total is calculated based on the previous twelve months' data. The permit holder must calculate monthly process rates and keep a compliance record on site or at a local field office with site responsibility, for Division review. STATE AND FEDERAL REGULATORY REQUIREMENTS 5. Visible emissions must not exceed twenty percent (20%) opacity during normal operation of the source. During periods of startup, process modification, or adjustment of control equipment visible emissions must not exceed 30% opacity for more than six minutes in any sixty consecutive minutes. Opacity must be determined using EPA Method 9. (Reference: Regulation Number 1, II.A.1. Et 4.) 6. This source is subject to the odor requirements of Regulation Number 2. (State only enforceable) Any coal processing operations as defined under section 860.250 of the referenced New Source Performance Standard, subpart Y, including conveyors, storage system, transfer and loading systems, at this facility are subject to Regulation No. 6 -Standards of Performance for New Stationary Sources, Part A -Federal Register Regulations (Title 40 CFR Part 60) Adopted By Reference, Subpart Y -Standards of Performance for Coal Preparation Plants, including, but not Limited to, the following: [The requirements below reflect the rule language of 40 CFR Part 60 Subpart Y published in the Federal Register on 101812009. However, if revisions to this Subpart are published at a later date, the owner or operator is subject to the requirements contained in the revised version of 40 CFR Part 60, Subpart Y.] a. Visible emission from coal processing and conveying equipment, coal storage systems, and coal transfer and loading must not exceed twenty percent (20%) opacity. (560.254(a)). Initial compliance with the opacity standard must be demonstrated using the following test method: (560.257) (1) Method 9 must be used to determine opacity. (2) The duration of the Method 9 performance test must be 1 hour (ten 6 -minute averages). COLORADO �- Air Pollution Control Division Deparmi .t of PuChc Health 6 rmuon l Page 4 of 26