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CO DEPT HELTH HAZ pAT Fax:3036399833 Jul 29 2005 73:49 P. 04 <br />Division ofMinuals & Geology <br />~y 29, 2005 <br />age 3 <br />• Along with many othct chemical compounds and classes of compounds, radionuclides are <br />rogulated~ae hazardous airpollutaata (HAPs). T'he regulatory standards for HAPs, including <br />radionuclides, are oxptrosaed on a tnass_enuission ratcba8is and sot-on-the basis'of-^~ - - - - - - - - " - - - - - <br />' - - - - - ~ ---- raclioactTvfty levels. The notification threshold for radionuclides sages fiom 50 to 250 <br />pounds par year of tncontrollad actual emissions depending oa rolease height and rho <br />distance to'the property line. Air-Permit requirements apeciSc to redionuolidea would not <br />. become applicable tmtil potential emissions reached a level of ton tons per year. <br />8. Ia cartels cases, APCD SSP has required miaiag operations to conduct part[culato maths <br />ambient air monitoring for a period of time following the startup of the eorarx. In these cases, <br />based on the restilta from predictive emissions modeling or other data roviewed during the <br />permitting prviceas, APCD SSP had concerns that the National Ambient Air Quality Steadard <br />for particulate mattctcr could be exceeded at receptors in areas adjacent to the mine. Tho <br />monitoring wee required to deanoastrate that compliance with the standard was being <br />achieved. APCD S9P does not have specific standards or guidelines for airborne <br />concentrations and ambient air monitoring of radionuclides. APCD SSP defers to rho <br />teconataendationamade by RMU. <br />~f you have any queati~a concerning Air Quality issues phase call Itolsad Hen at (303) 547x3252. <br />~yater Quality issues should be directed to Gary Boers at (303) 692-3524. Iisdiation managemaat <br />questions should be directed to Edgar 13thingtoa at (303)1+92.3438. if you would tike to sat up e <br />meeting, please ca11 mo at (303) tS9Z-3438. <br />Radiation Menagometrt Unit <br />compliance Program <br />cC •• Jewry Goad; AGO <br />Jefferson County Health Department <br />I~ <br />sincerely, <br />