Laserfiche WebLink
applicant and made available to the Division for inspection upon request. (Reference: Regulation 3, Part <br />B, II.A.4) <br />Process/Consumption Limits <br />Facility <br />Equipment <br />AIRS <br />point <br />Process Parameter <br />Annual Limit <br />Monthly Limit <br />ID <br />Rock Dust <br />022 <br />Rock Dust Use <br />20,000 <br />4,536 tons per <br />Silo <br />tons/year <br />month <br />The monthly limits included in this permit were derived from the annual limits based on a 31 -day month. <br />The owner or operator shall calculate monthly emissions based on the calendar month. <br />During the first twelve (12) months of operation, compliance with both the monthly and yearly process <br />limitations shall be required. After the first twelve (12) months of operation, compliance with only the <br />yearly limitation shall be required. <br />Compliance with the yearly process limits shall be determined on a rolling twelve (12) month total. By <br />the end of each month a new twelve-month total is calculated based on the previous twelve months' data. <br />The permit holder shall calculate monthly process rate and keep a compliance record on site or at a local <br />field office with site responsibility, for Division review. <br />The source accurately tracks silo loading on a monthly and rolling 12 -month total as required. The <br />facility maintained compliance with the monthly limits during the first year following permit <br />issuance, and operated in compliance with the rolling 12 -month total during the compliance period <br />(see attached records). The highest rolling 12 -month total throughput reported for this point <br />occurred during the period ending March 2014, with 17,036 tpy of rock dust loaded. The source did <br />not exceed 2,000 tons per month loaded during any month in the compliance period. The source is <br />in compliance with this condition. <br />Note: The 2016 issuance of this permit included increased throughput limits of 25,000 tons/year and <br />5,500 tons/month. <br />STATE AND FEDERAL REGULA TORY REQ UIREMENTS <br />Visible emissions shall not exceed twenty percent (20%) opacity during normal operation of the source. <br />During periods of startup, process modification, or adjustment of control equipment visible emissions <br />shall not exceed 30% opacity for more than six minutes in any sixty consecutive minutes. Opacity shall be <br />determined using EPA Method 9. (Reference: Regulation No. 1, Section ILA.1. & 4.) <br />Loading was not occurring during the inspection, and no visible emissions were observed. The unit <br />appeared to be well maintained, and the source performs monthly visible emissions observations as <br />part of the O&M Plan. The inspector noted in maintenance records that when baghouse seal <br />leakage was noted during regular inspection/maintenance operations, corrective actions were <br />immediately initiated. Without evidence to suggest the contrary, the source is in compliance with <br />this condition. <br />2015 Inspection Aff <br />0510015-INSP-2015 Page 25 of 37 <br />