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        Pioneer Americas, LLC d/b/a Olin Chlor Alkali Products; Stauffer; and Montrose

        Olin, Stauffer, and Montrose collectively operate a groundwater treatment system which was originally installed in 1983.
        Pioneer Americas, LLC d/b/a Olin Chlor Alkali Products; Stauffer; and Montrose collectively operate a groundwater treatment system.

        Background

        Pioneer Americas, LLC d/b/a Olin Chlor Alkali Products

        From 1945 to 1988, Stauffer Chemical Company (Stauffer) operated a chemical manufacturing plant on the western portion of Basic Magnesium Incorporated, an industrial complex located near Henderson, Nevada that is currently known as the Black Mountain Industrial Center.  In 1988 Stauffer ceased its operations after it was purchased by Pioneer Chlor Alkali Company, Inc.  Pioneer was subsequently purchased by Olin Corporation in 2007, and is now doing business as Olin Chlor Alkali Products.  In 1983, State of Nevada, Stauffer, and Montrose entered into Consent Order for the installation and operation of a Groundwater Treatment System (GWTS) north of the Stauffer chemical plant to prevent the downgradient migration of groundwater that was discovered to be contaminated.  The GWTS is currently active and is collectively operated by Pioneer Americas, LLC d/b/a Olin Chlor Alkali Products, Stauffer, and Montrose.

        Stauffer

        In 1942, Basic Magnesium Incorporated (BMI) began production at a facility funded by the U.S. government for the production of magnesium near Henderson, Nevada.  The western part of the BMI property included a chlorine and caustic plant which was a necessary component for the production of magnesium.  The BMI magnesium production plant was closed in 1944, but the chlorine and caustic plant continued to operate.  Stauffer Chemical Company (Stauffer) leased the chlorine and caustic plant from the U.S. Government in 1945, and purchased the western part of the BMI property in 1952.  Beginning in 1947, Stauffer leased 36 acres of its property to Montrose Chemical Corporation of California (Montrose) for the construction and operation of a chemical manufacturing plant.  After a series of environmental investigations identified that the groundwater at the site was contaminated with volatile organic compounds, a Groundwater Treatment System (GWTS) was installed downgradient of the plant in 1983 to prevent migration of the impacted groundwater.  Stauffer ceased operations at the property in 1988 when the property was purchased by Pioneer Chlor Alkali, Inc.  Many of the waste management areas that were used by Stauffer were decommissioned in subsequent years and are now inactive.  The GWTS is currently active and is collectively operated by Montrose, Pioneer Americas, LLC d/b/a Olin Chlor Alkali Products, and Stauffer Management Company, LLC.

        Montrose

        In 1947, Montrose Chemical Corporation of California (Montrose) began operating a new chemical manufacturing plant near Henderson, Nevada.  The plant was constructed on land leased from Stauffer Chemical Company near the western portion of an industrial complex currently known as the Black Mountain Industrial (BMI) Center.  The Montrose plant specialized in the production of a variety of chemicals. Montrose ceased all operations at the plant in 1983, and they demolished the plant in 1984.  Various plant and site closure activities continued until 1989.  In order to prevent groundwater contaminated with volatile organic compounds (VOCs) from migrating off-site, a Groundwater Treatment System (GWTS) was installed downgradient of the plant in 1983.  The GWTS is currently active and is collectively operated by Montrose, Pioneer Americas, LLC d/b/a Olin Chlor Alkali Products, and Stauffer.


        Current Status

        The Companies have maintained and operated a groundwater extraction and treatment system since November of 1983.  In the second half of 2017, the system treated over 34 million gallons of groundwater and removed approximately 6,000 lbs of dissolved VOCs.  Since its startup, the system has removed approximately 1,000 tons of VOCs.

        Routine groundwater monitoring and analysis currently demonstrates GWTS effectively contains contaminants on the industrial site and the GWTS operations continue to meet Consent Order requirements.

        Overview of the Olin, Stauffer, and Montrose sites showing process water ponds in the foreground.
        Overview of the Olin, Stauffer, and Montrose sites showing several process water ponds.

        Downloadable Documents

        Pioneer Americas, LLC d/b/a Olin Chlor Alkali Products; Stauffer; and Montrose

        2019 Comprehensive Groundwater Data Evaluation Report (PDF, 17.2 MB)

        Groundwater Treatment System Semi-Annual Operations Report - July-December 2019 (PDF, 22.3 MB)

        Groundwater Treatment System Semi-Annual Operations Report - January-June 2019 (PDF, 6.26 MB)*

        *Laboratory reports have been omitted from these documents.  For a copy of the full report, please contact Chad Schoop.

        Pioneer Americas, LLC d/b/a Olin Chlor Alkali Products; and Stauffer

        Second Quarter 2020 Progress Report (PDF, 401 KB)

        First Quarter 2020 Progress Report (PDF, 426 KB)

        Fourth Quarter 2019 Progress Report (PDF, 446 KB)

        Third Quarter 2019 Progress Report (PDF, 411 KB)

        Montrose

        2019 Annual Closed Ponds Post-Closure Monitoring Report (PDF, 4.9 MB)

        Environmental Conditions Investigation Program First Quarter 2020 Progress Report (PDF, 475 KB)

        Environmental Conditions Investigation Program Fourth Quarter 2019 Progress Report (PDF, 397 KB)

        Environmental Conditions Investigation Program Third Quarter 2019 Progress Report (PDF, 388 KB)

        Environmental Conditions Investigation Program Second Quarter 2019 Progress Report (PDF, 387 KB)


        Recent News

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        Disclaimer: The Nevada Division of Environmental Protection does not offer any guarantee, express or implied, regarding the accuracy, validity, or completeness of the information presented by a third-party.  Furthermore, the views or opinions expressed by a third-party do not reflect the views or opinions of the Division.


        Additional Information

        For more information, please contact Chad Schoop at cschoop [at] www.cateringmanage.com or 702-486-2850 x248.

        To request public records, please submit a Public Records Request Form.

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