Superfund Site Profile
The Callahan Mining Corp site is located about 1,000 feet east-southeast of Harborside Village in Brooksville, Hancock County, Maine.
Zinc-copper sulfide ore deposits at the Site were discovered in 1880. The mine operated from the late 1800s until its closure in 1972 when the Callahan Mining Corporation (Callahan) divested the property to individual landowners. The ore exploration from the 1940s to 1950s found the ore contained zinc, copper, lead, arsenic and cadmium. In the 1960s, the State of Maine passed legislation which permitted creating and constructing two dams in 1967 that were used to drain the 75 acre Goose Pond estuary and thereby allow open pit mining. The main period of operation was from 1968 to 1972.
The Site’s former Callahan Mine property is an elongated 120 acre property oriented north-south along the east side of Goose Falls Road. The Site also includes the Goose Pond estuary (approximately 75 acres) and private properties that abut the former Callahan Mine property to the north, west, and south. The Site is situated at 44° 21’ 05.9” north latitude and 68° 48’ 35.5” west longitude. Goose Pond and Holbrook Island Sanctuary State Park are located immediately east of the former Callahan Mine property. A number of private residences and seasonal homes are located adjacent to the former Callahan Mine property on Goose Falls Road, Cape Rosier Road, and Old Mine Lane. Privately held properties border the Site’s former Callahan Mine property to the north, west and the south.The Site currently consists of a submerged open pit, the former mine operations area, a series of waste rock piles, and a tailings impoundment. The three waste rock piles contain about 1.7 million cubic yards of waste rock that was removed to access the ore in the open pit. The former mine operations area including the crushing and flotation operations as well as the administrative and maintenance facilities. The tailings impoundment has a 21 acre footprint, including the rock buttress, and contains about 700,000 cubic yards of tailings. Portions of the Site that include waste rock, tailings, access roads, ore, or mine operations remnants encompass approximately 75 acres. The areas with waste rock or tailings are for the most part un-vegetated and barren. The Goose Pond estuary was drained during mining operations. Portions of the estuary were used as a settling basin for flotation mill effluent. The former open pit mine now resides within the estuary.
TOPICS IN FOCUS
Institutional Controls are required for this site.
This site requires ICs because a decision document, such as a Record of Decision, has documented some level of contamination and/or remedy component at the site that would restrict use of the site. In order to determine the current status of ICs for this site, the site contacts should be consulted.