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• About Olin Chlor Alkali — Olin Chlor Alkali owns the western-most portion of the BMI Complex. Olin Chlor Alkali occupies land that was historically used by Pioneer Americas, Stauffer Management Company (SMC) and Montrose Chemical Corporation of California (Montrose). See additional details below about these companies.



• Read Download — Former Montrose Facility Fact Sheet



• Read Download — Former Stauffer Chemical Company Site - Fact Sheet



• View Photo — The Olin Chlor Alkali-Stauffer-Montrose Groundwater Treatment System located south of Warm Springs Road prior to upgrade to a low profile air stripper (picture taken 2004)



• View Photo — Montrose Vapor Extraction System
• View Photos — October 2006 Montrose Site Investigation

Documents available on-line

• May 21, 2009 — Site-Wide Groundwater Monitoring Program Third and Fourth Quarters 2008 and Annual Summary of Data (23 Pages)



• May 14, 2009 — Quarterly Monitoring Report First Quarter 2009 Groundwater Treatment System Henderson, Nevada (212 Pages - 6.3 MB)



• May 08, 2009 — Progress Report - Soil Vapor Extration Remedial Action (14 Pages)



• May 01, 2009 — Draft Risk Assessment Work Plan [Former Montrose& Stauffer Facilities -- Henderson,Nevada (125 Pages - 420KB)



• April 24, 2009 — Conceptual Site Model for the Montrose Closed Ponds Site Assessment area Henderson, Nevada (60 Page)



• March 03, 2009 – October 2008 — Bi-Annual Montrose Closed Ponds Monitoring Report (85 Pages - 18MB PDF file)



• February 09, 2009 — 4th Quarter 2008 Soil Vapor Extraction Remedial Action Progress Report



• January 30, 2009 — Remedial Alternatives Study Process Document; Former Stauffer and Montrose Facilities (62 Pages - 385KB)



• January 29, 2009 — Site–Wide Groundwater Monitoring Program; Third and Fourth Quarters 2008 and Annual Summary of Data
  • Main Report  —  Table 1  —  Table 2  —  Table 3  —  Table 4  —  Figures 1  —  Figures 2
  • Appendix A  —  Appendix B (Hard copy only)  —  Appendix C  —  Appendix D
  
  
• January 16, 2009 — Focused Conceptual Site Model to Address Soils for the Montrose Closed Ponds Site Assessment Area (249 Pages - 27MB)



• January 15, 2009 — Former Tank Farm Conceptual Site Model / Sampling and Analysis Plan (32 Pages - 155KB)

• December 22, 2008 — Former Benzene Storage Tank Conceptual Site Model (25 Pages - 100KB)



• December 17, 2008 — Geophysical Survey of Potential Burried Drums at BHC Cake Pile 3 and Area South of Former Phosphoric Acid Pond (38 Pages - 14MB)



• November 07, 2008 — 3rd Quarter of 2008 Soil Vapor Extraction Remedial Action Progress Report

• October 9, 2008 — DNAPL Report
• Summary [26 Pages]
• Site Map
• Appendix A
• Appendix B
• Appendix C
• Appendix D
• Data Table
• November 04, 2008 — NDEP Response to the October 9, 2008 DNAPL Report

• August 14, 2008 — 2nd Quarter of 2008 Groundwater Treatment System Progress Report
• Figure
• Appendix A
• Appendix B
• Tables

• July 25, 2008 — Conceptual Site Model Former Montrose and Stauffer Facilities and Downgradient Areas to Las Vegas wash [235 Pages - 880KB]



• Attachment 1: Response to Nevada Division of Environmental Protection Comments
• Table 2-1: Site-Related Chemical List
• Figure 1-2: Property Bondaries
• Figure 2-1: Study Area
• Figure 2-2: Site Plan and Site Assessment Areas
• Figure 3-11A: Chemical Cross Sections - Study Areas
• Figure 4-6A: Fine-Grained upper Muddy Creek Foramtion GQ
• Figure 4-6B: Coarse-Grained Upper Muddy Creek Formation GQ
• Figure 4-39: Dlmentyl Phosphorodlthlolc Acid in Alluvlal Groundwater
• Figure 4-42: Total Dissolved Solids in Alluvial Aquifer Groundwater
• Figure 4-43: Evidence of Potential DNAPL in Alluvial Aquifer
• Figure 4-44: Evidence of Potentail DNAPL (Fine-Grained -Muddy Creek)
• Figure 7-1: Exposure Pathways
• Figure 8-1: Conceptual Site Model Graphic
• Figure D-24A: Hexachlorobenzene Chemical Cross-Sections
• Figure D-24B: Vadose Zone Chemical Dist. Cross-Sec. Hexachlorobenzene
• Figure D-25A: Arochlor 1254 Chemical Cross-Sections
• Figure D-25B: Vadose Zone Chemical Dist. Cross-Sections Aroclor 1254
• Figure D-26: Hexachlorobenzene Consentrations in Soil
• Figure ES-1: Study Area
• Figure ES-2: Site Plan and Site Assessment Areas
• Figure ES-3: Exposure Pathways

• July 17, 2008 — Site-Wide Groundwater Remedial Alternatives Study Work Plan Former Montrose And Stauffer Facilities Area Henderson, Nevada [27 Pages 100 KB]

• July 17, 2008 — Site-Wide Groundwater Monitoring, 1st and 2nd Quarters 2008
• Figure - Site-Wide Groundwater Monitoring Program Montrose, Stauffer and Olin Sites
• Appendix A
• Appendix B
• Table 1
• Table 2
• Table 3
• All Tables

• June 3, 2008 — Bi-Annual Montrose RCRA Ponds Monitoring
• Bi-Annual Analytical Results Report
• Monrose Monitor Well MW -01
• Monrose Monitor Well MW -02
• Monrose Monitor Well MW -03
• Monrose Monitor Well MW -04

• May 06, 2008 — Progress Report - First Quarter of 2008, Soil Vapor Extraction Remedial Action, Montrose Chemical Corporation, Henderson , Nevada. [166 Pages 5.86MB]

• April 04, 2008 — Revised Community Involvement Plan [8 Pages]

• February 14, 2008 — 4th Quarter 2007 Ground Water Treatment System Report
• Tables
• Figures
• Appendix A
• Appendix B

• January 17, 2008 — Path Forward for Multiple Lines of Evidence for Groundwater Treatment System

• October 24, 2007 — 3rd Quarter 2007 Site-Wide Ground Water Monitoring Report
• Data Tables
• Figures
• Appendix A - [35KB]
• Appendix B - [2.5MB]
• Appendix C - [11MB]
• Appendix D - [500KB]
• Appendix E - [40MB]

• May 25, 2007 — Downgradient Sampling ReportHenderson, Nevada - Prepared by Geosyntec: This Downgradient Study consisted of a one-time sampling event of 22 existing monitor wells selected in the Downgradient Study Area [39 Pages 315KB]

• Appendix A - Combined Montrose and Stauffer SRC Lists
• Appendix B - Standard Operating Procedures for Water Level Measurements
• Appendix C - Standard Operating Procedures for Groundwater Sampling
• Appendix D - Field Notes
• Appendix E - Quality Assurance Project Plan [N/A - Contact Las Vegas Office]
• Appendix F - Data Validation Program Memorandum
• Appendix G - [N/A - Contact Las Vegas Office]
• Figures - 10MB file
• Lab Reports & Data - [Not available Online - Contact Las Vegas Office]
• Tables

• MAY 11, 2007 — Field Sampling and Standard Operating Procedures Site-Wide Soil and Groundwater Investigations — Former Montrose and Stauffer Sites -- Henderson, Nevada [158 Pagesrevision 2.0]

• April 02,2007 — Bi-Annual Montrose RCRA Ponds Monitoring

• MARCH 30, 2007 — Groundwater Monitoring Data Submittal: First Quarter 2007 Quarterly Groundwater Monitoring Program, Nevada Division Of Environmental Protection, Facilities No. H-000536 And H-000540 BMI Complex Henderson, Nevada [16 Pages, 250KB]
• Figures -- Groundwater Monitoring Data [34 Pages, 580KB]
• Tables, Water Leval Data [15 Pages]
• Report Appendix - available upon request, 1,133 Pages - 37MB

• February 04, 2007 — 4th Quarter 2007 Soil Vapor Extraction Report [160 Pages - 5MB]

NDEP case officer information — For Olin-Pioneer-Stauffer and the Montrose sites please contact NDEP Las Vegas Office: (702) 486-2850 - ex:247

Link to Company Websites

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