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ODOR CONTROL STUDY <br /> Table 1 : Odor Detection Thresholds (ppbv) <br /> Source <br /> Compound A B C D E Average <br /> Hydrogen sulfide 0 .47 0 .47 0 .47 0 .47 0 .47 0 .47 <br /> Dimet:W sulfide 0 . 1 1 3 1 1 1 ,22 <br /> Dimethyl disulfide 1 — -- -- 1 <br /> Methyl mercaptan 1 . 1 1 . 1 0 . 5 1 . 1 0 . 5 0 . 86 <br /> Ammonia -- 37 47 37 1 335 <br /> MEK -- — 21000 -- -- 21000 <br /> Toluene -- -- 170 -- -- 170 <br /> Methanol -- -- 4 , 260 -- -- 4 ,260 <br /> Acetone -- -- 20 , 000 -- -- 20 , 000 <br /> A — Design Manual -Odor and Corrosion Control in Sanitary Sewerage Systems and <br /> Treatment Plants <br /> B — Handbook of Environmental Data on Organic Chemicals , K. Verscheuren <br /> C — Odors from Stationary and Mobile Sources , National Academy of Sciences <br /> D — Odor and Volatile Organic Compound Emission Control for Municipal and Industrial <br /> Treatment Facilities <br /> E — Air Pollution Engineering Manual <br /> Indian River County, Central Wastewater Treatment Plant <br /> PBS #071230, February 2003 <br />