Three chemical emendments aluminum sulfate (alum), alluminum chloride (ACl3) and Ferric Chloride (FeCl3) were tested to exmaine their impact on carbon doioxide, methane, ammonia and H2S levels. All treatments were added as a rate of 10% by volume to the pits, and each treatment was measured for TKN, COD, NO3-N, NH3-N and pH. Raw manure and alum treatment were shown to have significant TKN differences, attributabel to organic matter differences between the samples, otherwise no significant differnces occurred between the samples. Ammonia was significantly reduced by both aluminum treatments, but not by FeCl3.. Ammoina levels were also found to be very periodic with the maximum level achieved approximately 4 hours after stirring occurred. Carbon dioxide concentration followed a similar pattern to that of ammonia, indicating stirring increase the CO2 level 2-3 times. Methane levels were indicative of anaerobic digestion of organic matter as indicated by the high COD levels. Some spikinh in H2S emissions occurred within the first four hours in the raw manure and FeCl3 treatments, however after this time raw manure and FeCl3 treatmetns were similar for all treatments. Spiking appears to be common, which is due to the H2S levels were relatiive to the detection levels. Methane and H2S concentrations in emissions did not exhibit any stirring effect. In summary, the chemical amendments produced very little significant impact on swine manure.