Kinder-Morgan installed monitoring wells around its Yuma Booster Station, which is surrounded by agricultural fields. Two of the monitoring wells are located on the North Gila Thomas estate property. The purpose of the monitoring wells is to provide early detection of potential contaminants associated with the pipeline running through the agricultural fields. MACTEC Engineering and Consulting, Inc. has provided laboratory data since April 2005. However, recent elevated readings of Volatile Fuel Hydrocarbons, Benzene, Toluene, Ethyl benzene, total Xylenes, and Methyl-tert-butyl Ether have caused concern. We have reviewed the groundwater sampling data collected from the two monitoring wells and conducted an assessment to evaluate whether the chemicals are at levels of public health concern.