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11-k Scott -- Rifle era, ' Pi[ 2022 <br /> As we discussed based on the currently anticipated annual production of approximately 90,000tons per year of <br /> aggregate from the aggregate processing equipment owned and operated by Scott Contracting at the Owl SWD <br /> Operating,U.C,White River Pit,AIRS ID 103-0376-001,Construction Permit 0811800711',the annual actual <br /> uncontrolled particulate emissions from each crushersand screensare below the Air Pollutant Emissions Notice <br /> (APEN)reporting threshold of 2 tons per year. Consequently,the crushingand screening equipment is currently <br /> exempt form APEN reporting requirements. Should the actual uncontrolled particulate emissions from any of the <br /> crushersor screensachieve 2 tons or more per year,they will become APEN and permit required. <br /> The crushing and screening equipment is also applicable for the New Source Performance Standards(NSPS) <br /> requirements of 40CFR 60,Subpart 000(NSPS 000)which requires a 30minute method 9 visible emissions <br /> observations on crushers,screens and associated transfer points within 180days of commencement of <br /> operation. A link to NSPS 000 is included below. Also attached is a list of firms that conductopacity readings. <br /> https.//wvAv.e cfr gov/cgi-bin/text-idx?node=so40.7.60.000 <br /> Pursuant to our discussion of House Bill(HB)1326,which allows for operation of aggregate processing equipment <br /> and engines in advance of issuance of a Construction Permit under an APEN submittal, a link to the Permitting <br /> Section Memo regarding HB1326 is included below. <br /> httns://e nvironmentalrecords.colorado.gov/HPRMWebDrawe r/RecordViewl9O3O49 <br /> With regard to our permitting and APEN discussion I have included links to the Mining(APCD Form 222),Crushing <br /> and Screening(APCD Form 200),and Diesel Engine(APCD Forms 233 and 214)APENS below. <br /> https://e nvironmentalrecords.colorado.gov/HPRMWe bDrawe r/Record/1214750/File/document <br /> https://e nw ronmentairecords.colorado.goy/HPRMW a bDrawe r/Record/1214744/File/document <br /> https://e nvironmentairecords.colorado.goy/HPRMW a bDrawe r/Record/1214632/File/document <br /> http://e nvironrrientalrecords.colorado.aov/HPRMW ebDramr/`RecordView/`1213167 <br /> As we discussed the engine is applicable forthe requirements of the New Source Performance Standards <br /> requirements of 40CFR 60,Subpart IIII,(link below)which apply to diesel fired engines. <br /> https://www.ecfr.gov/cgi-bin/t-ext-i dx?node=s p40.7.60,i i i i <br /> Should you have any questions for me please feelfree to call or email. <br /> Thank you, <br /> Chris <br /> Christopher S.Reinhardt <br /> Environmental Protection Specialist <br /> Air Pollution Control Division <br /> Compliance and Enforcement Program <br /> Section 7-206. Wildfire Hazards <br /> The subject property falls within the Not Rated (NR) and Low Rating on the Garfield County <br /> Wildland Fire Susceptibility Index Map. <br /> Section 7-207. Natural and Geologic Hazards <br /> The area proposed for mining operations is not a known natural or geologic hazard area. <br /> Section 7-208. Reclamation <br /> Scott plans to reclaim the property as mining progresses, with only the Operations Pad <br /> remaining un-reclaimed, with a stabilized working surface, until all mining extraction is <br /> complete. Areas disturbed during development shall be restored with natural-appearing <br /> 2-16 <br />