Tier 2 CSTAG Sites

Tier 2 Sites and CSTAG Site Documents

The following are current or former Tier 2 sites as designated by the Contaminated Sediments Technical Advisory Group (CSTAG). Former sites are those where the record of decision or equivalent has been signed. 

As the CSTAG reviews each site, EPA will post links to CSTAG’s site recommendations and the EPA regional office’s responses. These documents will also become part of the site’s administrative record.

Additional CSTAG sites may be added as EPA adds more sites to the National Priorities List or as additional information becomes available for sites undergoing investigation.

Allied Paper/Portage Creek/Kalamazoo River, Kalamazoo, Michigan

• CSTAG's Recommendations for the Kalamazoo River Site, June 2002 (PDF)(4 pp, 98 K)
• Regional Response to CSTAG's Recommendations, November 2002 (PDF)(11 pp, 773 K)
• CSTAG Updated Recommendations on the Kalamazoo River Site, December 2004 (PDF)(2 pp, 30 K)
• Regional Response to CSTAG's Updated Recommendations, June 2005 (PDF)(4 pp, 28 K)
• CSTAG Updated Recommendations on the Kalamazoo River Site, November 2014 (PDF)(5 pp, 310 K)
• Regional Response to CSTAG's Update Recommendations, January 2015 (PDF)(7 pp, 655 K)

Anniston PCB Site, Anniston, Alabama

• CSTAG Recommendations on the Anniston PCB Site, September 2005 (PDF)(6 pp, 52 K)
• Regional Response to CSTAG's Recommendations, December 2005 (PDF)(8 pp, 65 K)
• CSTAG Recommendations on the Anniston PCB Site, November 2020 (PDF)
• Regional Response to CSTAG's Recommendations, January 2021 (PDF)
• CSTAG Recommendations on the Anniston PCB Site, July 2023 (PDF) (pdf) (486.04 KB)
• Regional Response to CSTAG's Recommendations, August 2023 (PDF) (pdf) (230.75 KB)

Big River Watershed - Combined Sites Project for Big River Mine Tailings OU2 & Southwest Jefferson County Lead Mining OU4

• CSTAG Recommendations on the Big River Watershed, January 2021 (PDF)(6 pp, 52 K)
• Regional Response to CSTAG's Recommendations on the Big River Watershed, May 2021 (PDF)(6 pp, 52 K)
• CSTAG Recommendations on the Big River Watershed Site, June 2024 (PDF) (pdf) (1.03 MB)
• Regional Response to CSTAG's Recommendations, August 2024 (PDF) (pdf) (777.72 KB)

Diamond Alkali - Lower Passaic River and Newark Bay, Newark, New Jersey

• CSTAG Recommendations for the Lower Passaic River Site, April 2008 (PDF)(12pp, 501 K)
• Regional Response to CSTAG Recommendations, May 2008 (PDF)(22 pp, 2.3 MB)

Operable Unit (OU) 4: Interim cleanup in the upper 9 miles of the Lower Passaic River Study Area

• CSTAG Recommendations for the Lower Passaic River Site, April 2018 (PDF)(6pp, 2.8 MB)
• Regional Response to CSTAG Recommendations, May 2018 (PDF)(6pp, 2.8 MB)
• CSTAG Recommendations for OU4, Lower Passaic River Study Area , January 2020 (PDF)(9 pp, 2.6 MB)
• Regional Response to CSTAG Recommendations for OU4, Lower Passaic River Study Area, March 2020 (PDF)(16 pp, 11 MB)

Operable Unit (OU) 3: Newark Bay Study Area interim cleanup in the upper 9 miles of the Lower Passaic River Study Area

• CSTAG Recommendations for OU3, Newark Bay Study Area, April 2020 (PDF)(10 pp, 1 MB)
• Regional Response to CSTAG Recommendations for OU3, Newark Bay Study Area, June 2020 (PDF)(17 pp, 949 K)
   

Newtown Creek, Queens and Brooklyn, New York

• CSTAG Recommendations for the Newtown Creek, June 2015 (PDF)(6 pp, 4.3 MB)
• Regional Response to 2015 CSTAG Recommendations, October 2015 (PDF)
• CSTAG Recommendations for the Newtown Creek, August 2020 (PDF)
• Regional Response to CSTAG Recommendations, December 2020 (PDF)
• CSTAG Recommendations for the Newtown Creek, September 2023 (PDF)
• Regional Response to CSTAG Recommendations, November 2023 (PDF)
• CSTAG Recommendations for the Newtown Creek, 2024 (PDF) (pdf) (1.06 MB)
• Regional Response to CSTAG Recommendations, 2024 (PDF) (pdf) (1.03 MB)

• CSTAG Recommendations on the Newtown Creek OU3 East Branch Early Action, April 2024 (PDF) https://semspub.epa.gov/work/02/647002.pdf
• Regional Response to CSTAG's Recommendations, May 2024 (PDF) https://semspub.epa.gov/work/02/707460.pdf

Palos Verdes Shelf, Los Angeles, California

• CSTAG Recommendations on the Montrose/Palos Verdes Shelf Site, March 2003 (PDF)(5 pp, 67 K)
• Regional Response to CSTAG's Recommendations, May 2003 (PDF)(12 pp, 91 K)
• CSTAG Updated Recommendations on the Montrose/Palos Verdes Shelf Site, April 2006 (PDF)(3 pp, 32 K)
• Regional Response to CSTAG's Updated Recommendations, June 2006 (PDF)(5 pp, 51 K)

Tittabawassee River, Saginaw River and Bay, Midland and Saginaw Counties, Michigan

• CSTAG Recommendations on OU1 of the Tittabawassee River, Saginaw River and Bay Superfund Site, December 2014 (PDF)(4 pp, 3.8 MB)
• Regional Response to CSTAG Recommendations, March 2015 (PDF)(5 pp, 448 K)

Tri-State Mining District Watershed Site, Kansas, Missouri, Oklahoma

• CSTAG Recommendations for the Tri-State Mining District Watershed Site, October 2022 (PDF)
• Regional Response to CSTAG Recommendations, December 2022 (PDF)

Upper Columbia River, Washington State

• CSTAG Recommendations for the Upper Columbia River Site, May 2007 (PDF)(7 pp, 63 K)
• Regional Response to CSTAG Recommendations, September 2007 (PDF)(11 pp, 82 K)

Former Tier 2 Sites:

• Ashland/Northern States Power Lakefront, Ashland, Wisconsin
  • CSTAG's Recommendations for the Ashland Site, September 2002 (PDF)(4 pp, 264 K)
  • Cover Letter for the Regional Response to CSTAG, October 2002 (PDF)(1 pg, 22 K)
  • Regional Response to CSTAG's Recommendations, October 2002 (PDF)(11 pp, 631 K)
     
• Centredale Manor Restoration Site, North Providence, Rhode Island
  • CSTAG Recommendations on the Centredale Manor Restoration Project (CMRP) Site, August 2004 (PDF)(6 pp, 510 K)
  • Regional Response to CSTAG's Recommendations, October 2004 (PDF)(12 pp, 898 K)
  • National Remedy Review Board Recommendations for the Centredale Manor Restoration Project Site, October 2010 (PDF)(6 pp, 1.9 MB)

• GE-Housatonic/Rest of River, Pittsfield, Massachusetts, western Massachusetts and Connecticut
  • CSTAG Recommendations on the Housatonic Rest of River Site, December 2002 (PDF)(5 pp, 290 K)
  • Regional Response to CSTAG's Recommendations, March 2003 (PDF)(8 pp, 246 K)
  • CSTAG Updated Recommendations on the Housatonic Rest of River Contaminated Sediment Superfund Site, November 2004 (PDF)(2 pp, 101 K)
  • Regional Response to CSTAG's Updated Recommendations, March 2005 (PDF)(3 pp, 120 K)
  • CSTAG Updated Recommendations on the Housatonic Rest of River Site, June 2009 (PDF)(5 pp, 233 K)
  • Regional Response to CSTAG's Updated Recommendations, August 2009 (PDF)(11 pp, 495 K)
  • National Remedy Review Board Recommendations for the Housatonic River, Rest of River Site, October 2011 (PDF)(7 pp, 2.7 MB)
     
• Gowanus Canal, Brooklyn, New York
  • CSTAG Recommendations for the Gowanus Canal Site, January 2012 (PDF)(8 pp, 2.7 MB)
  • Regional Response to CSTAG Recommendations, May 2012 (PDF)(24 pp, 4.6 MB)
     
• Kanawha River, Nitro, West Virginia
  • CSTAG Recommendations on the Kanawha River, WV Contaminated Sediment Site, May 2004 (PDF)(6 pp, 591 K)
  • Regional Response to CSTAG's Recommendations, October 2004 (PDF)(9 pp, 716 K)
     
• Lower Duwamish Waterway, Seattle, Washington
  • CSTAG Recommendations on the Lower Duwamish Waterway Site, December 2003 (PDF)(5 pp, 445 K)
  • Regional Response to CSTAG's Recommendations, February 2004 (PDF)(7 pp, 444 K)
  • CSTAG Updated Recommendations on the Lower Duwamish Waterway Site, April 2006 (PDF)(3 pp, 135 K)
  • Regional Response to CSTAG's Updated Recommendations, July 2006 (PDF)(3 pp, 204 K)
     
• Nyanza Chemical Waste Dump, Ashland, Massachusetts
  • CSTAG Recommendations on the Nyanza Chemical Waste Dump Site, July 2006 (PDF)(6 pp, 73 K)
  • Regional Response to CSTAG's Recommendations, June 2007 (PDF)(18 pp, 385 K)
  • CSTAG Updated Recommendations for the Nyanza Chemical Waste Dump, June 2010 (PDF)(4 pp, 738 K)
  • Regional Response to CSTAG's Updated Recommendations, September 2010 (PDF)(27 pp, 2.2 MB)
     
• Pearl Harbor Naval Complex, Pearl Harbor, Hawaii
  • CSTAG Recommendations on the Pearl Harbor Naval Complex Site, July 2005 (PDF)(7 pp, 55 K)
  • Regional Response to CSTAG's Recommendations, September 2005 (PDF)(11 pp, 111 K)
     
• Portland Harbor, Portland, Oregon
  • CSTAG Recommendations on the Portland Harbor Site, September 2003 (PDF)(5 pp, 249 K)
  • Regional Response to CSTAG's Recommendations, December 2003 (PDF)(10 pp, 64 K)
  • CSTAG Updated Recommendations on the Portland Harbor Site, May 2006 (PDF)(3 pp, 69 K)
  • Regional Response to CSTAG's Updated Recommendations, August 2006 (PDF)(3 pp, 38 K)
     
• Ventron Velsicol - Berry's Creek Study Area, Bergen County, New Jersey
  • CSTAG Recommendations for the Berry's Creek Study Area Site, July 2010 (PDF)(8 pp, 2.6 MB)
  • Regional Response to CSTAG Recommendations, November 2010 (PDF)(14 pp, 1.2 MB)