Document qo03ka2m4q7pDNd7MxpdNXzG

`1 CM'':k memicalj rr.v mast:':: () , VHItt' Cl !'4'l 1 , i I If J, '.V L S1 ik'f'.irjIA ntion 1'V ^ .Hr. A. J. Romanach 2000-4^31 TECHNICAL CENTER Dear Tony: Qrirj.M it ion rn.u- * January 15, 1976 EP Engineering -t Hydrochloric Acid (HC1) Dispersion h Tl Z* c . 21 Xrv ' |:* 'TH .1* S'* Co on In reference to your request to determine maximum ground level HC1 concentrations resulting from boiler burning of chloride-containing wastes, I offer the following. The calculated maximum ground level concentration under the condition you described is 0.005 ppm. The maximum occurs about 1800 feet downwind from the stack, under conditions of strong solar radiation (high turbulance) and a four mile per hour downwind. The above calculations are based on the following stack data that you provided: , 4c? A fZ UilffS \ ^ tack height: 150 ft. ukA) *re sri ( Stack diameter: 12 ft. uh hr Stack gas rate: 152,500 ACFM- tuijlr fjtr: slrrrfrf Stack gas temperature: 500F / w Cy'Orl'rstHC1 concentration: 20 ppm A<50% ra i> Ambient concentrations were calculated using the Pasqui11-Gifford dispersion model and the Holland plume rise model. The calculated results should be accurate within an order of magnitude. Use of the Holland plume rise model generally yields conservatively high ground-level concentration estimates. If you have any questions or if I can be of further help, please let me know. Very truly yours, JRF: jej J. R. Foster UCC 103421