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Table 1 <br /> Sources of Odor and Possible Management Techniques <br /> Odor Source Location Possible Cause Management Approach <br /> Feedstock Receiving Material exceptionally Add carbon source at grinding <br /> odorous upon receipt and "nibble" at odorous pile <br /> Odorous material remaining Augment material processing <br /> unprocessed on receiving pad efforts <br /> (mix sitting too long prior to <br /> processing) <br /> Aisles/Access Roads Storm water allowed to pond Absorb ponded water with <br /> in improperly graded areas wood chips/other absorbent, <br /> fill depressions, improve <br /> grading and/or drainage <br /> control <br /> Unprocessed material in aisles Clean aisles of spilled material <br /> and treat with carbon source <br /> Stockpiles/Windrows Ammonia odor (high nitrogen Add additional wood chips (or <br /> level) other carbon source), <br /> recombine pile <br /> Sulfur Odor (anaerobic Increase turning frequency, <br /> conditions) check temperatures add <br /> bulking agent <br /> Varying odors in pile Turn windows to achieve even <br /> mixing, check temperatures, <br /> porosity, fiber-length, bulk <br /> density, and moisture content, <br /> adjust window constituents <br /> geometry, and/or <br /> configuration <br /> Odors generated after turning Increase turning frequency, <br /> increase pile porosity, add <br /> odor-absorbing amendment <br /> (like wood chips, sawdust, <br /> wood ash) <br /> Long retention time Remove chipped and ground <br /> material more frequently <br /> Odors present at time of Decrease pile size, increase <br /> Curing Piles/ Product loading (temperatures above windrow time prior to moving <br /> Storage Areas 1227) to curing piles or product <br /> storage <br /> 7 <br />