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) **Note, the Scoping Study is too large to place on this web page,  Contact Cheryl Howe from the WHMD at 517-373-9881 if you need a copy of the document.

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 (10/16/2006)

Sediment Trap Study 2 (10/16/2006)   

November

December

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

• Cover Letter
• Text
• Appendices (**Note, that this is an extremely large file.  Contact Cheryl Howe from the WHMD at 517-373-9881 if you need a copy of the Appendices)

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

• Cover Letter
• Volume 1 Text
• Attachment A: Figures (**Note, that this is an extremely large file.  Contact Cheryl Howe from the WHMD at 517-373-9881 if you need a copy of the Attachment)
• 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)