Management of Trihalomethanes in Finished Drinking Water Through Source Water Precursor Monitoring

Trihalomethanes are organic compounds formed in drinking water distribution systems as a result of disinfection. This capstone project researched and evaluated the statistical correlation of trihalomethanes in finished drinking water and total organic carbon in source water using data generated by Denver area utilities. Results of the study conclude that some drinking water supply systems show a slight correlation between source water total organic carbon levels and trihalomethane levels in finished water. Results of the study also verify the assertion that changes to treatment for the reduction of trihalomethanes, for the protection of human health under the Safe Drinking Water Act should be determined by each utility, using information from gathered data, seasonal trends, and small scale batch testing.

Compliance Strategies for Gasoline Distribution Facilities

Gasoline Distribution Generally Available Control Technology (GD GACT) is a Federal environmental regulation that is specifically written and enforced to reduce HAP emissions from gasoline distribution (GD) facilities. The regulation targets four specific types of GD facilities: bulk gasoline terminals, bulk gasoline plants, pipeline breakout stations, and pipeline pumping stations. A GD GACT compliance plan was developed for a particular, representative example of each type of GD facility affected by the regulation. Each facility in the study is owned and operated by a single company. The compliance plans were developed to meet the regulatory requirements contained within GD GACT. The compliance plans will be implemented at each facility prior to the January 10, 2011 compliance date.