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Bill Ritter, Jr., Governor <br />James B. Martin, Executive Director <br />Dedicated to protecting and improving the health and environment of the people of Colorado <br />4300 Cherry Creek Dr. S. <br />Denver, Colorado 80246 -1530 <br />Phone (303) 692 -2000 <br />TDD Line (303) 691 -7700 <br />Located in Glendale, Colorado <br />http://www.cdphe.state.co.us <br />J uly 22, 2008 <br />Stone Wholesale, Inc. <br />Attn.: Jim Striggow, President <br />4717 W Lakevtiew Drive <br />Fort Collins, CO 80535 <br />Re: Permit Application No. 08LR0356F (AIRS Point ID: 069/0439/001) <br />Surface mining activities at Brownstone Quarry located at 5240 West County Road 56, <br />Laporte, Larimer County, Colorado. <br />Dear Mr. Striggow, <br />Laboratory Services Division <br />8100 Lowry Blvd. <br />Denver, Colorado 80230 -6928 <br />(303) 692-3090 <br />Colorado Air Pollution Control Division (the Division) has reviewed your above application and Air <br />Pollutant Emission Notice (APEN). <br />It is determined that the above source is one of the listed sources that is specifically exempt from permit <br />requirements (per Regulation No. 3, Part B, II. D. 1. g. However, filing of an APEN is required as the <br />emissions exceed the APEN thresholds. <br />This exemption from permit requirements is issued in reliance upon the accuracy and completeness of <br />information supplied by the applicant, and is conditioned upon construction, installation, and operation <br />in accordance with this information and with representations made by the applicant or applicant's <br />agents. Specifically, this exemption has been granted provided that the following- information is <br />accurate and complete: <br />Mining activities are less than 70,000 tons per year. <br />STATE OF COLORADO <br />Action: APEN Required <br />Permit Exempted <br />Estimated emissions at the requested sandstone quarrying activity of 8,000 tons per year are: <br />Particulate Matter — Fugitive: 2.9 tons per year. <br />PM10 (Particulate Matter less than 10 micrometers): 1.5 tons per year. <br />Colorado Department <br />of Public Health <br />and Environment <br />This permit exemption is for mining activities only. Process equipment (crushers, screens, etc.) must <br />have separate permit/s. <br />