Superfund Site:

NORTHWESTERN STATES PORTLAND CEMENT CO.
MASON CITY, IA

Superfund Site Profile

Site Contacts

Community Involvement Coordinator
Pamela Houston
(913) 551-7699

Remedial Project Manager
Diana Engeman
(913) 551-7746

Site Location

Street Address:
SEC 33 T97N R20W, MASON CITY, IA 50401

Background

The Northwestern States Portland Cement Company Site consists of an area within the Holcim (US) Inc., (Holcim) former cement manufacturing facility, located just north of Mason City, Iowa, near the intersection of 25th Street and U.S. Highway 65. Cement was manufactured at the site from 1908 until 2009. The area referred to as the West Quarry was mined for limestone, a raw material for cement production, until 1950. The West Quarry had reached a depth of approximately 40 feet and covered an area of about 150 acres. In 1969, the company began using the West Quarry for the disposal of waste ...
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