Letter Health Consultation: Metropolitan Metal Finishing Hamden and New Haven, Connecticut.

摘要

The Metropolitan Metal Finishing site is an approximately 0.50 acre property located at 400 Goodrich Street in Hamden, CT with a portion of the property located in New Haven, CT. The property was originally developed as an automobile repair garage circa 1948. The property was subsequently developed as a metal plating facility circa 1955, remaining in operation until 1996 as Global Metal Finishing and later Metropolitan Metal Finishing. A one-story, cinderblock building, that once operated as a metal plating facility is located on the site. Metropolitan Metal Finishing was an electroplating shop that performed chromating, black oxide, copper flash (cyanide-based) plating, cyanide zinc plating, alkaline zinc plating, cyanide brass plating; and nickel plating. Metropolitan Metal Finishing went out of business in 1996 and the property has been vacant since then (Weston 2006). The US EPA did a removal of hazardous substances from the site in the spring and summer of 1997. The US EPA reported that the main floor of the building had about 100 open top dip tanklbaths ranging in size from 10 to 3,000 gallons containing solutions used in cyanide-based plating and other metal coating operations. In addition, approximately 100 containers of chemicals including cyanides, chromic acid, and other caustic materials were observed, along with 10 compressed gas cylinders and about 300 small containers of process lab reagents. The US EPA also stated that the basement contained several feet of contaminated standing water.