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..H M 01 N W M AR / AA3 Telomer Research Program 1200 South Hayes Street Arlington, Virginia 22202-5050 Tet (703)413-1100 ext 5264 Face (703)4138111 ^ Clariant (D lD K ) February 14, 2003 Mary F.

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NORTHERN KENTUCKY OFFICE SUITE 340 1717 DIXIE HIGHWAY COVINGTON, KENTUCKY 41011-4704 606-331-2838 513-381-2838 FAX: 513-381-6613 DAYTON, OHIO OFFICE SUITE 900 110 NORTH MAIN STREET DAYTON, OHIO 45402-1786 937-228-2838 FAX: 937-228-2816 TAFT, STETTINIUS & HOLLISTER LLP 425 WALNUT STREET, SUITE 1800 CINCINNATI, OHIO 45202-3957 513-381 -2838 FAX: 513-381-0205 www.taftlaw.com CLEVELAND, OHIO OFFICE 3500 8P TOWER 200 PUBLIC SQUARE CLEVELAND, OHIO 44114-2302 216-241-2638 FAX: 216-241-3707 COLUMBUS, OHIO OFFICE 21 east state street columbus, ohio 43215-1221 614-221-2838 FAX:614-221-2007 R o b er t A.

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3M FLUOROCHEMICAL SUBMISSIONS February, 2002 - May, 2004 INDEX OF 3M'S 2002-2004 AR-226 DOCKET SUBMISSIONS BY DATE Back to Menu July 2003 Click on Study Title to View Report July 9, 2003 Page 1, 2 July 9, 2003 Submission Cover Letter Final Report, NIOSH Health Hazard Evaluation for Perfluorooctanoic Acid and Perfluorooctane Sulfonate, NIOSH HETA 20010235, July 31, 2001.

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DuPont Modeling Methodology and Results DRAFT Shimizu Site June 2003 AR226- 06/02/03 IO GJ GJ About the Model Industrial Source Complex Short Term 3 (ISCST3) Sold/used globally, Including in Japan http://www.phoenix-r.co.jp/products/products.htm Input Stack height, diameter Flowrate, temperature Mass of pollutant (kilogram per hour) Local meteorological data (Shlzouka 1997, 98, 99) Output Ambient air concentrations in ug/m3 Max values and locations outside the property line CAB000376 Prevailing wind -- *> R HD H CAB0OO377 Ambient annual ground level concentration in ug/m3 Model Calculations i Ambient air concentrations based onGaussian Equation Concentration a function of a vertical term and a i dispersion term i Vertical term based on stack height, receptor elevation, plume rise, mixing i B H O H Dispersion parameters describe distribution of pollutant in lateral and vertical CAB000378 m Ha<H1 ir CABO0037 9 Shimizu Modeling Inputs Stack Parameters Source ID 1 2 3 4 ssmPmPccoraarresuupp-tbbs))-scbbcreeurrrub((bbccbeaaerllDeereeeddxsxi""tciAAtfroiCfCportrifSSoifninccnerreuupbbpobboweewdrrd''eoeornnr DBCScrubber MP-2scrubber location DPlant DPlant pcolaEpnoPMtlyflaPomn-rp2teoP:rwbcFtuoydAippeldaoerinnlymdgm:iFceErroP- OOOOppppeeeepppprerrreeeOdddrdrrraaaappppaaaaptttteeeeyyyyeeeee,,rr,,rrssssryayy2y2112222eeete0788i44o44aaaa0000nrrrrhhhhddddsooooaaaauuuuyyyyrrrrssssssssj Height, m - Diameter, m 8 0.68(1) 15 0.6 18,2 0.6 16.1 10.6 assumed Flowrate m3/hr 2400 9600 1620 7500 r~ N> (1)GivenInemailof4/17/03from Hidetaka Hlromatsu: 600sommsquaredlametTer.

P-1 A H A M - 3-T 70 INVESTIGATION OF PERFLUOROCHEMICAL (PFC) CONTAMINATION IN MINNESOTA PHASE ONE Report to Senate Environment Committee Fardin Oliaei, Ph.D., Former Emerging Contaminants Program Coordinator Don Kriens, M.S., P.E., Principal Engineer Katrina Kessler, M.S., Staff Engineer February 2006 er i CO CO 000003 P-2 Contents EXECUTIVE SUMMARY INTRODUCTION PART I.

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