Operable Unit 2, Cinder Bank
Operable Unit Description
The Cinder Bank is an accumulation of process waste deposits from the East and West plants. It is composed of more than 30,000,000 tons of smelter residue which is highly contaminated with heavy metals including zinc, copper, lead and cadmium deposited along the base of Blue Mountain and bordering the Aquashicola Creek. It is approximately 2.5 miles long, 200 feet high, and ranges in width from 500 to 1,000 feet.
A ROD OU 2 was issued on June 29, 1988. The ROD called for a cap consisting of a minimum of 18" of soil and 6" clay and vegetation to be placed on the entire cinder bank after it was graded to allow for effective placement of the cap. The ROD also called for surface water controls and leachate collection and treatment. However, EPA determined that additional studies were needed during implementation of the ROD to evaluate a significant subsurface fire in the cinder bank. One of the Potentially Responsible Parties, Horsehead Resource Development, Co.(HRD) has performed those additional studies. Recently, HRD submitted a pollution reduction technology plan for the cinder bank to EPA to address concerns of multiple Agency programs including, Water, Air, RCRA and Superfund. This plan is currently under review by EPA's various programs. EPA's Superfund program intends to reconsider this remedy in the next several months.