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iii iuiuiiniu iii • <br />!~''~.~. <br />y~ <br />~'~ <br />January 7, 1998 <br />Ms. Gabi Hoefler <br />Boulder County Health Department <br />3450 Broadway <br />Boulder, CO 80304 <br />Dear Ms. Hcefler, <br />St. Vrain Valley <br />Community Watchdogs <br />neighbors united jor clean air <br />P 0 Box 82/Hygiene/CO 80533-008? <br />onlinr ar www.grociers.com/-watchdagt <br />• ANT <br />M <br />RECEIVED <br />JAN 1 21999 <br />M-'ll-Zo8 <br />We appreciated receiving a copy of John Lohr's correspondence to you dated 11/5/98. <br />Mr. Lohr's sincerity is evident. However, regarding comments pertaining to the angle <br />of sunlight vis-a-vis accuracy of evaluating particulate emissions opacity whether <br />visible or invisible due to angle of incidence, quite simply put, the dust referred to by <br />M.L. Dobbs is in the air we breathe as a matter of course duringour daily activity as <br />residents of the St. Vrain Vallev and neighbors of Southdown. The low angle of the <br />sun simply enhances the visibility Of Southdown's daily and routine emissions. <br />During the months of November and December 1998, the Watchdogs called in several <br />complaints to your Air Pollution Hot Line number regarding fugitive dust emissions at <br />the Southdown facility. We deeply appreciate the control strategies that are being <br />taken by Mr. Lohr to reduce and contain emissions, and we understand the frustration <br />that the regulators must experience when they respond to a complaint and find nothing <br />visible when they reach the plant. Please continue to take our concerns seriously <br />because these emissions are real, and they are falling through the cracks of the <br />regulatory process. <br />The enclosed photograph was taken in December of 1998. The incident was reported <br />on the Hct Line. The plume that you see in the photograph persisted for approximately <br />30 minutes. It blew to the north, across Ute Highway and into residential areas. <br />Unfortunately, at present, we are unable to identify the spec'rfic site at the plant where <br />these plumes originate. We suspect that the plumes may contain cement kiln dust <br />escaping from the disposal site and/or the wind is picking up portand cement debris <br />from the plant's structures and dispersing it throughout the adjoining community. <br />Gabi, the Watchdogs are still waiting for the Air Pollution Control Division to provide us <br />with a chemical characterization of these particulates and a determination if air-borne <br />crystalline silica is present. Would your department be able to assist us in getting this <br />information? <br />over <br />"Protect whar't closrs! to your heart: your family, your friends and your lungs." <br />