January

Revised Draft Screening Level Ecological Risk Assessment (SLERA) Work Plan for the Tittabawassee River and Associated Floodplains

• Link to the July 2005 version of the Draft SLERA Work Plan (Appendix J)

Memo: Dow Response to USEPA Review of Draft SLERA Work Plan (1/17/2006)

Memo: Dow Response to MDEQ Review of Draft SLERA Work Plan (1/17/2006)

Revised Draft Baseline Ecological Risk Assessment (BERA) Work Plan for PCDDs and PCDFs in the Tittabawassee River and Associated Floodplains

• Link to the July 2005 version of the Draft BERA Work Plan (Appendix J)

Memo: Dow Response to USEPA Review of Draft BERA Work Plan (1/17/2006)

Memo: Dow Response to MDEQ Review of Draft BERA Work Plan (1/17/2006)

Revised Quality Assurance Project Plan (QAPP) for the Ecological Risk Assessment of dioxins in the Tittabasassee River and Floodplain

Revised Final Midland Representative Soils Sampling and Analysis Plan ( Soils SAP) in Support of Bioavailability Study and Dow Cover Letter (1/17/2006) transmitted with Soils SAP   

February

March

Notice of Deficiency (NOD) Tittabawassee River and Floodplain Remedial Investigation Work Plan and Midland Area Soils Remedial Investigation Work Plan (3/2/2006)

Upper Saginaw River Conceptual Scoping Study and Cover Letter (3/31/2006) 

April

Dow "Path Forward" Letter (4/10/06)

DEQ Response to Dow "Path Forward" Letter (4/10/06)

Detailed Notice of Deficiency (NOD) Tittabawassee River and Floodplain Remedial Investigation Work Plan and Midland Area Soils Remedial Investigation Work Plan (4/13/06)

DEQ Response to Dow Conceptual GeoMorph Scoping Study for Upper Saginaw River (4/25/06) 

May

Dow Responses to the MDEQ March 2 and April 13, 2006 Notices of Deficiency (5/1/2006)

Sampling Approach in Support of Bioavailability Study, Midland Area Soils (5/1/2006)

Transmittal E-mail and Revised Midland Soils Schedule (5/5/2006)   

June

GeoMorph Sampling and Analysis Plan, Upper Tittabawassee River (6/1/2006)

• Text
• Attachment A
• Attachment B
• Attachment C
• Attachment D
• Attachment E

Target Analyte List Technical Memorandum, Tittabawassee River and Floodplain (6/1/2006)

Sampling and Analysis Plan In Support of Bioavailability Study, Midland Area Soils (6/1/2006)   

July

Final GeoMorph Sampling and Analysis Plan, Upper Tittabawassee River (7/7/2006)

• Text
• Attachment A
• Attachment B
• Attachment C
• Attachment D
• Attachment E
• Attachment F
• Attachment G
• Attachment H
• Attachment I

DEQ Approval of GeoMorph Sampling and Analysis Plan, Upper Tittabawassee River (7/12/2006)  

August

Sampling and Analysis Plan in Support of Bioavailability Study, Midland Area Soils (Received 8/7/2006) 

September

October

Sediment Trap Study 1 (10/24/2006)

Sediment Trap Study 2 (10/24/2006)   

November

December

Midland Area Soils Remedial Investigation Work Plan (12/1/2006)

• Cover Letter
• Text
• Appendices(**Note that this is an extremely large file.  The WHMD plans to break this file down into smaller segments for faster downloading on the web)

Tittabawassee River and Upper Saginaw River and Floodplain Soils   Remedial Investigation Work Plan ( 12/1/06)

• Cover Letter
• Volume 1 Text
• Attachment A: Figures
• Attachment B: Tables
• Attachment C: Technical Memorandum-Bank Erosion Bed Elevation Study-Tittabawassee River 
• Attachment D: Figures D-1 through D-3 - Land Use Tittabawassee River and Upper Saginaw River
• Attachment E: Technical Memorandum-In-River, Floodwater, and Turf Mat Sampling and Analysis
• Attachment F: Historical Timeline-Historical Operations, Chemicals Produced, Waste Management Practices, and Development of Environmental Laws and Regulations
• Attachment G: Evaluation of Potential Constituents of Concern
• Attachment H: GeoMORPH Geochemistry Protocol-Tittabawassee River
• Attachment I : GeoMORPH Sample Design, Calibration and Verification
• Attachment J: GeoMORPH Overview-Iterative Investigation Process, Tittabawassee and Upper Saginaw Rivers
• Attachment K: Pilot Corrective Actions Matrix 
• Attachment L: MDEQ Approval Letter Dated July 12, 2006 (GeoMORPH Sampling and Analysis Plan and Quality Assurance Project Plan-Upper Tittabawassee River, Midland, Michigan)
• Attachment M: Regulatory Checklist, Tittabawassee River and Upper Saginaw River and Floodplain Soils
• Volume 2 Text
• Volume 2 Appendices

Upper Tittabawassee River Reach O Plan and Pilot Corrective Action Plan (12/20/2006)

DEQ Letter to Dow- Tittabawassee River Interim Response Activities Reach O Plan and Pilot Corrective Action Plan (12/21/2006)