



Study with the several resources on Docsity
Earn points by helping other students or get them with a premium plan
Prepare for your exams
Study with the several resources on Docsity
Earn points to download
Earn points by helping other students or get them with a premium plan
Community
Ask the community for help and clear up your study doubts
Discover the best universities in your country according to Docsity users
Free resources
Download our free guides on studying techniques, anxiety management strategies, and thesis advice from Docsity tutors
Superfund Liability, Chemical Manufacturing Plant, Michigan Facility, Human Health, The Environment, Upstream, Downstream, Disposal Practices, Incineration, Furan Contamination. Case study for law students.
Typology: Study Guides, Projects, Research
1 / 6
This page cannot be seen from the preview
Don't miss anything!
Dow's Midland Plant began operations in 1897. The facility covers approximately 1,900 acres. It abuts the Tittabawassee River, with the majority of the plant located on the east side of the river and south of the city of Midland. Past waste disposal practices, fugitive emissions, and incineration at Dow have resulted in on and off-site contamination. Off-site contamination extends over 50 miles downstream of the Dow Midland facility through the Tittabawassee and Saginaw Rivers and into Saginaw Bay.
Dioxins (including furans) are the primary contaminants found off-site, although other contaminants have been identified as well. Dioxins are a group of chemicals that persist in the environment and build up in the food chain. The toxicity of individual dioxins is assessed and combined to determine the "toxic equivalence concentration," or TEQ, of the mixture. The Agency for Toxic Substances and Disease Registry Web site has a description of dioxin and its associated risk factors.
At various times during operation, the Midland Plant produced over 1,000 different organic and inorganic chemicals. Dioxins and furans were byproducts formed during the manufacture of chlorine- based products, including chlorophenolic compounds manufactured at the plant since the 1930s. Elevated dioxin levels in and along the Tittabawassee River appear to be primarily attributable to liquid wastes that were discharged in the past directly into the river from the Dow Midland facility. Over time, changes in waste management practices included installation and operation of a wastewater treatment plant. Changes in the wastewater treatment plant and subsequent incorporation of pollution controls have reduced or eliminated releases from the Midland Plant to the river. The Tittabawassee River may also be subject to flooding and stream bank erosion, particularly during high-energy stream flow events. As a result, dioxin contamination has spread to other locations within the flood plain of the Tittabawassee River, as well as to downstream locations.
The highest dioxin concentrations detected to date are 110,000 parts per trillion TEQ in the Tittabawassee River and 1,600,000 parts per trillion TEQ in the Saginaw River. These high levels led to Dow's cleanup of four hot spots in 2007, with EPA oversight. Fish and invertebrates within the Tittabawassee and Saginaw Rivers are contaminated. The Michigan Department of Community Health has issued fish and game consumption advisories.
The Site is located in over-bank areas on the northeast side of the Tittabawassee River, approximately 3.6 miles downstream of the confluence of the Chippewa and Tittabawassee Rivers and located within The Dow property bounded to the northeast by a wetland with Saginaw Road to the northeast beyond the wetland, the Caldwell boat launch to the South, and to the west by the east channel bank of the Tittabawassee River, in Midland County, Michigan.
The Site includes two areas of focus.The first consists of buried, post-industrial deposits immediately adjacent to the River and extending at least 75 feet inland, near the southern end of Reach J and extending through the southern end of Reach K (the “Levee Area”).The second area consists of high and low terraces, and includes wetlands, that occupy most of the Reach J/K over-bank area and are subject to sediment deposition during flood conditions.
The geographical coordinates for Reach J/K are longitude 84°12'11” West and latitude 43°34'36.2” North.
The response actions proposed will mitigate threats to public health, welfare, and the environment presented by the presence of an uncontrolled release of dioxin and furans, hazardous substances, into the food chain of the Tittabawassee River from soils located within the Reach J/K Area.
The proposed response actions include excavation of contaminated soils, capping of contaminated areas, air monitoring, limited fencing to restrict access to areas of the Site, and off-site disposal of contaminated soil.The response activities will result in the removal of approximately 32,000 cubic yards of waste material.
Shoreline stabilization near the RMU 1/2 area. (10/22/2007)
The purpose of this Action Memorandum is to document the determination of an imminent and substantial threat to public health and the environment at the "Reach O," area of contamination within the Tittabawassee River Dioxin Spill Site, (also referred to as the "Site" or the "Tittabawassee River Site").The Site, which is located in Midland County, Michigan, was contaminated with dioxin and furans, primarily as the result of historic wastewater discharge practices associated with The Dow Chemical Company (Dow) Plant.
The site known as "Reach O of the Tittabawassee River Superfund Site," is an approximately 1, foot-long point bar extending approximately 50 to 100 feet into the Tittabawassee River and situated parallel to the northeast bank of the Tittabawassee River, approximately 6.1 miles downstream of the confluence of the Chippewa and Tittabawassee Rivers and located within, or immediately adjacent to, the Dow Chemical Company property located to the south of North Saginaw Road and to the west of North Orr Road, in Midland County, Michigan.