A field assessment was performed to measure the emissions of volatile organics from a petroleum refinery land treatment site. As part of the study, the emissions of total volatile organics from surface-applied and subsurface-injected oily sludge were measured over a five-week period. The effect of soil tilling on the emissions was also monitored. Volatile organics emissions rates were measured using the emission isolation flux chamber method. Emission rates of carbon dioxide and methane were also measured for use in estimating biodegradation rates. Soil samples were collected during the test periods to determine soil properties, oil levels, and microbe count. Soil surface and ambient temperatures, both inside and outside the flux chambers, were measured throughout the test periods. The measured volatile organics emission rates were compared to applicable land treatment models. The report is in two volumes. Volume I contains the body of the report and major appendices. Volume II contains secondary appendices, including all the raw sample analysis data.