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Home My WebLink AboutTurbo Coating Make Up Air Letter.pdf BRITTAIN ENGINEERING, INC. P.O BOX 939 828-328-1813 HICKORY, NC 28603 FAX 828-328-1814 CONSULTING MECHANICAL AND ELECTRICAL ENGINEERS March 16, 2012 Mr. James Lamb Plan Review Official Catawba County Re: Turbocoating Corp. Dear Mr. Lamb, This is to confirm our telephone conversation regarding the make up air for the newly installed exhaust hoods over (2) existing heating ovens. These exhaust fan are 3000 CFM each, totaling 6000 CFM. The make up air for these exhaust fans shall be performed via the existing six (6) 20 ton packaged rooftop units. Each rooftop unit shall have it’s existing manual outside air hood balanced to 1000 CFM. This will keep the building air balance neutral. The Owner will employee his HVAC contractor to set this air quantity for each unit, and supply documentation when complete. Sincerely, BRITTAIN ENGINEERING, INC. Rodney Brittain, PE, LEED AP