Quick References:

On June 12, 2003, the Department of Environmental Quality (DEQ) issued a hazardous waste management facility renewal operating license to The Dow Chemical Company (Dow), Michigan Operations for its treatment, storage, and disposal facility in Midland, Michigan, and related corrective action activities.  In addition to on-site corrective action activities, the operating license also addresses major off-site corrective action activities for Midland area soils, the Tittabawassee and Saginaw Rivers and their flood plains, and the Saginaw Bay.  Please click on the following documents for additional information regarding the project.

DOW OFFSITE CORRECTIVE ACTION DOCUMENTS:

2008

• April
  • DEQ Letter to Dow - Notice to Dow requiring the submittal of work plans for 2008 Interim Response Activities/Pilot Corrective Action Plans for the Tittabawassee River and Saginaw River (4/16/08)
• March
  • DEQ/EPA Joint Letter to Dow - Responding to Dow's 2/8/2008 Letter to DEQ that expressed concerns about Dow's working relationship with and between the DEQ and EPA; includes 2/13/2008 EPA letter of support regarding DEQ approval with modifications of the Saginaw River and Bay Scope of Work for the Remedial Investigation Work Plan (3/3/08)
• February
  • Dow Letter to DEQ - letter from Dow expressing concerns about the company's working relationship with and between the DEQ and EPA (2/8/08)
  • DEQ Letter to Dow - Approval with Modifications of Revised Dow Remedial lnvestigation Scope of Work for the Saginaw River and Floodplain and Saginaw Bay (2/1/08)
• January
  • DEQ Letter to Dow - Letter notifying Dow that corrective action work will continue to be conducted under the State hazardous waste program with the U.S. EPA coordinating with the DEQ to provide CERCLA federal removal actions/interim response activity support and other technical assistance, as necessary.  Letter also indicates that the DEQ remains open to moving forward with presumptive remedies or other alternate approaches acceptable to the agency in lieu of Dow's proposed Direct Contact Criteria Report process for development of site-specific criteria for remediation of Midland area soils.  (1/30/08)
  • DEQ Letter to EPA - Letter regarding the direction of the investigation and cleanup of the Tittabawassee River, Saginaw River, Saginaw Bay, and the Midland area (1/17/08)

2007

• December
• November
  • DEQ Letter to Dow - Disapproval and Letter of Warning:  Direct Contact Criteria Report for Midland Area Soils (11/9/2007)
• October
  • Revised Remedial Investigation Scope of Work for the Saginaw River and Saginaw Bay, Michigan (10/15/2007)
  • Revised Dow Midland Area Soils Remedial Investigation Work Plan (10/15/2007)
    • Cover Letter and Text
    • Appendix A - Existing Data Quality and Usability Assessment - Midland Area Soils
    • Appendix B - Interim Measures Report - Salzburg Road Area
    • Appendix C - Soil Sample Results from Previous Studies
    • Appendix D - Development of Target Analyte List
    • Appendix E - Human Health Risk Assessment Work Plan Attachments
    • Appendix F - Site History Attachments
    • Appendix G - Data Evaluation Report in Support of Bioavailability Study, Midland Area Soils (Pre-RI Study Report)
  • Dow Direct Contact Criteria Report for Midland Area Soils (10/15/2007) 
    • Text (Pages 0-124)
    • Text (Pages 125-211)
    • Text (Pages 212-308)
    • Appendix A - Calculation Spreadsheet
    • Appendix E-3 - Pilot Study Report: Oral Bioavailability of Dioxins/Furans in Midland and Tittabawassee River Floodplain Soils
    • Appendix E-3 (cont) - Follow-Up Study Report: Oral Bioavailability of Dioxins/Furans in Tittabawassee River Floodplain Soil
    • Appendix E-3 (cont) - Summary of University of Michigan Dioxin Exposure Study - This appendix is too large to post; it is available for review at the DEQ Lansing and Bay City Offices or it can be provided upon request on CD.
  • Work Plan for Exposure Unit Sampling, Middle and Lower Tittabawassee River (10/15/2007) - This is a large file.  If it is too large for individuals without high speed Internet to download, it is available for review at the DEQ Lansing and Bay City Offices or it can be provided upon request on CD.
• September
  • Draft Current Conditions Report for the Saginaw River, Floodplain, and Bay (9/17/2007)
    • Text
    • Tables 
    • Figure 1-1 
    • Figure 2-1a 
    • Figure 2-1b 
    • Figure 2-1c 
    • Figure 2-2 
    • Figure 2-3a 
    • Figure 2-3b 
    • Figure 2-4 
    • Figure 2-5 
    • Figure 2-6
    • Figure 2-7 
    • Figure 2-8a 
    • Figure 2-8b 
    • Figure 2-8c 
    • Figure 2-9a 
    • Figure 2-9b 
    • Figure 2-9c 
    • Figure 2-10a 
    • Figure 2-10b
    • Figure 2-10c 
    • Figure 2-11 
    • Figure 2-12a 
    • Figure 2-12b 
    • Figure 2-12c 
    • Figure 3-1a 
    • Figure 3-1b 
    • Figure 3-1c 
    • Figure 3-2a 
    • Figure 3-2b 
    • Figure 3-2c 
    • Figure 3-2d 
    • Figure 3-3 
    • Figure 4-1 
    • Figure 4-2
    • Figure 4-3 
    • Figure 4-4 
    • Appendix A 
    • Appendix B 
• August
  • DEQ Letter to Dow - Notice of Deficiency; Remedial lnvestigation Scope of Work for the
    Saginaw River and Floodplain and Saginaw Bay, Michigan (8/29/2007)
• July
  • DEQ Letter to Dow - Approval with modification of Compliance Schedules for the Tittabawassee River and Floodplain Soils and Midland Area Soils Remedial Investigation Work Plans (7/24/2007)
  • Dow Remedial lnvestigation Scope of Work for the Saginaw River and Floodplain and Saginaw Bay, Michigan (7/13/2007)
  • DEQ Letter to Dow - Approval of the 2007 GeoMorph Sampling and Analysis Plan, Upper Tittabawassee River and Middle Tittabawassee River, and the 2007 Quality Assurance Project Plan, GeoMorph Investigation Tittabawassee River (7/12/2007)
  • EPA CERCLA Orders (7/12/2007)
    • Reach D 
    • Reach J-K
    • Reach O 
• June
  • DEQ Response to EPA Comments on Revised Dow Tittabawassee River and Floodplain and Midland Area Soils Remedial Investigation Work Plans (6/25/2007)
  • EPA Comments to the DEQ on Revised Dow Tittabawassee River and Floodplain and Midland Area Soils Remedial Investigation Work Plans (6/7/2007)
• May
  • Dow E-mail Response Regarding Exposure Unit Sampling -- Priority 1 and 2 Properties (5/25/2007)
  • Dow Response to GeoMorph Approval Letter (5/22/2007)
  • DEQ Letter to Dow - Approval to use GeoMorph process for Middle and Lower Tittabawassee River/Upper Saginaw River site characteriztion, including Interim Response Activities/Pilot Corrective Action Plan Decision Tree (5/3/2007)
• April
• March
• February
  • GeoMorph Pilot Site Characterization Report - Upper Tittabawassee River and Floodplain Soils (2/1/2007)
    • Submittal Letter from Dow
    • Text
    • Attachment A 
      • Study Area - Reaches A Through O, Upper Tittabawassee River
      • Reach Overview, Upper Tittabawassee River
      • 100-Year Floodplain, Upper Tittabawassee River
    • Attachment B - Thalweg/Longitudinal Profile, Tittabawassee River
    • Attachment C - 1937 and 2005 Channel Comparison - Currently, the file size for this attachment is too large to place on this site.  However - The attachment is available on the Dow Regulatory Activities - Dioxin and Furan Situation - web page.
    • Attachment D - Sample Location Summary, GeoMorph Site Characterization, Upper Tittabawassee River
    • Attachment E - Method Comparability Study Summary, USEPA 1613B and 1613-TRP/RT, GeoMorph Site Characterization, Upper Tittabawassee River
    • Attachment F - USEPA Appendix IX Target Analyte List, GeoMorph Site Characterization, Upper Tittabawassee River
    • Attachment G - 2006 Aerial Photography and High Resolution Topographic Mapping, Upper Tittabawassee River - Currently, the file size for this attachment is too large to place on this site.  However - The attachment is available on the Dow Regulatory Activities - Dioxin and Furan Situation - web page.
    • Attachment H - Historic Outfalls, The Dow Chemical Company - Midland, Michigan - Currently, the file size for this attachment is too large to place on this site.  However - The attachment is available on the Dow Regulatory Activities - Dioxin and Furan Situation - web page.
    • Attachment I- Geochemistry Protocol and Results, GeoMorph Site Characterization, Upper Tittabawassee River
    • Attachment J - Report on Development of Hydrodynamic Model of the Tittabawassee River - Currently, the file size for this attachment is too large to place on this site.  However - The attachment is available on the Dow Regulatory Activities - Dioxin and Furan Situation - web page.
    • Attachment K - Conceptual Model of Solids Movement in the Tittabawassee River and Floodplain
    • Attachment L - Maximum TEQ by Location Maps, GeoMorph Site Characterization, Upper Tittabawassee River - Currently, the file size for this attachment is too large to place on this site.  However - The attachment is available on the Dow Regulatory Activities - Dioxin and Furan Situation - web page.
    • Attachment M - Surface TEQ by Location Maps, GeoMorph Site Characterization, Upper Tittabawassee River - Currently, the file size for this attachment is too large to place on this site.  However - The attachment is available on the Dow Regulatory Activities - Dioxin and Furan Situation - web page.
    • Attachment N - Cross-Sections, GeoMorph Site Characterization, Upper Tittabawassee River - Currently, the file size for this attachment is too large to place on this site.  However - The attachment is available on the Dow Regulatory Activities - Dioxin and Furan Situation - web page.
    • Attachment O - Fixed-Interval and Random-on-Grid Statistical Comparison and Verification, GeoMorph Site Characterization, Upper Tittabawassee River - Currently, the file size for this attachment is too large to place on this site.  However - The attachment is available on the Dow Regulatory Activities - Dioxin and Furan Situation - web page.
    • Attachment P - Technical Memorandum, Statistical Calibration and Verification, GeoMorph Site Characterization, Upper Tittabawassee River - Currently, the file size for this attachment is too large to place on this site.  However - The attachment is available on the Dow Regulatory Activities - Dioxin and Furan Situation - web page.
    • Attachment Q- Preliminary In-Channel Sediment Inventory, GeoMorph Site Characterization, Upper Tittabawassee River
    • Attachment R - GeoMorph Site Characterization Data Summary, Upper Tittabawassee River
    • Attachment S- GeoMorph Site Characterization Data Summary - Erosion Scar Sampling, Upper Tittabawassee River
    • Attachment T
      • USEPA Appendix IX Laboratory Report,  GeoMorph Site Characterization, Upper Tittabawassee River
      • Summary of Site Positives, USEPA Appendix IX,  GeoMorph Site Characterization, Upper Tittabawassee River
      • Tentatively Identified Compounds, USEPA 8260B, GeoMorph Site Characterization, Upper Tittabawassee River
      • Tentatively Identified Compounds, USEPA 8270C, GeoMorph Site Characterization, Upper Tittabawassee River
• January

2006

• December
  • Upper Tittabawassee River Reach O Plan and Pilot Corrective Action Plan (12/20/06)
  • DEQ Letter to Dow-Tittabawassee River Interim Response Activities Reach O Plan and Pilot Corrective Action Plan (12/21/06)
  • 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
  • Midland Area Soils Remedial Investigation Work Plan (12/1/06)
    • 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)
• November
• October
  • Sediment Trap Study 1 (10/24/06)
  • Sediment Trap Study 2 (10/24/06)
• September
• August
  • Sampling and Analysis Plan in Support of Bioavailability Study, Midland Area Soils (Received 8/7/06)
• July
  • DEQ Approval of GeoMorph Sampling and Analysis Plan, Upper Tittabawassee River(7/12/06)
  • Final GeoMorph Sampling and Analysis Plan, Upper Tittabawassee River (7/7/06)
    • Text
    • Attachment A
    • Attachment B
    • Attachment C
    • Attachment D
    • Attachment E
    • Attachment F
    • Attachment G
    • Attachment H
    • Attachment I
• 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(6/1/06)
  • Sampling and Analysis Plan In Support of Bioavailability Study, Midland Area Soils(6/1/2006)
• May
  • Dow Responses to the MDEQ March 2 and April 13, 2006 Notices of Deficiency  (5/1/06)
  • Sampling Approach in Support of Bioavailability Study, Midland Area Soils   (5/1/06)
  • Transmittal E-mailand Revised Midland Soils Schedule(5/5/05)
• 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)
• March
  • Notice of Deficiency (NOD) Tittabawassee River and Floodplain Remedial Investigation Work Plan and Midland Area Soils Remedial Investigation Work Plan  (3/2/06)
  • Upper Saginaw River Conceptual Scoping Study and Cover Letter(March 31, 2006)
• February
• January
  • Revised Draft Screening Level Ecological Risk Assessment (SLERA) Work Plan for the Tittabawassee River and Associated Floodplains
    • Linkto the July 2005 version of the Draft SLERA Work Plan (Appendix J)
  • Memo: Dow Response to USEPA Review of Draft SLERA Work Plan
  • Memo: Dow Response to MDEQ Review of Draft SLERA Work Plan
  • 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
  • Memo: Dow Response to MDEQ Review of Draft BERA Work Plan
  • 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(January 17, 2006) transmitted with Soils SAP

2005

• December
  • In addition to the information provided on this web site, copies of these work plans are available for public review at the following locations:
    • Grace A. Dow Memorial Library Reference Desk, 1710 West St. Andrews, Midland, Michigan (989-837-3449)
    • Zauel (Saginaw Township) Library, 3100 North Center Road, Saginaw, Michigan (989-799-2771)
    • DEQ, Waste and Hazardous Materials Division (WHMD), Saginaw Bay District Office, 503 North Euclid, Bay City, Michigan (contact Trisha Peters at 989-686-8025, ext. 8204)
    • DEQ, WHMD Office, North Atrium (Lower Level) Constitution Hall, 525 West Allegan, Lansing, Michigan (contact Cheryl Howe at 517-373-9881)
  • Dow Tittabawassee River and Floodplain Remedial Investigation Work Plan
    • Appendix A- Historical Data Quality and Usability Assessment - Tittabawassee River and Floodplain Remedial Investigation Work Plan
    • Appendix B -Tittabawassee River Floodplain Scoping Study Field Investigation Report and Data Quality Evaluation
    • Appendix C  - Dendrogeomorphology Study Update, Tittabawassee River Floodplain Summer 2005 and Geochronology Study Update, Floodplain Soils, Tittabawassee River, Michigan
    • Appendix D- Scoping Study Areas 1 and 2 Hydrodynamic Model Development
    • Appendix E- Distribution of Furans and Dioxins in Tittabawassee River Sediment
    • Appendix F- Furan And Dioxin Distribution in Floodplaing Soils
    • Appendix G- Data Quality Objectives for the Tittabawassee River and Floodplain Remedial Investigation
    • Appendix H- Sampling and Analysis Plan
    • Appendix I- Human Health Risk Assessment Work Plan
    • Appendix J- Screening-Level Ecological Risk Assessment and Baseline Ecological Risk Assessment Work Plans
    • Appendix K- Tittabawassee River Floodplain Representative Soils Sampling and Analysis Plan in Support of Bioavailability Study
    • Appendix L- Public Participation Plan
  • Dow Midland Area Soils Remedial Investigation Work Plan
  • Updated Quality Assurance Project Plan, Dow Midland Offsite Corrective Action Program
  • Updated Field Standard Operating Procedures
• November
  • Final-Midland Representative Soils Sampling and Analysis Plan in Support of Bioavailability Study
  • Preliminary Conceptual Model Update-Tittabawassee River and Floodplain
  • DEQ/U.S. EPA Technical Review Comments on Dow/Entrix Screening Level and Baseline Ecological Risk Assessments (11/18/05)
• October
  • October 18, 2005 Approved Dow Scopes of Work (SOWs) for Midland Area and Tittabawassee River and Floodplain
    • DEQ Approval Letter
    • Midland SOW Cover Letter
    • Midland Area SOW
    • Tittabawassee SOW Cover Letter
    • Tittabawassee SOW
• September
• August
• July
• June
• May
  • Received by the DEQ from Dow on May 31, 2005
    • May 31, 2005 Submittal Letter
    • May 27, 2005 Draft Preliminary Conceptual Site Model  
    • Reports for Completed Studies
      • Sediment Evaluation Report, Upper Saginaw River, Saginaw, Michigan(May 2005, CH2M Hill)
      • Tittabawassee River Dioxin/Furan Concentration Vertical Variability (May 2005, CH2M Hill)
      • Transmittal of Analytical Data from Tittabawassee River Floodwater Samples(Memo dated May 31, 2005 CH2M Hill)
      • Dendrogeomorphic Pilot Study, Tittabawassee River Floodplain, Michigan  (May 2005, Limno-Tech, Inc.)
      • Geochronology Pilot Study, Floodplain Soils, Tittabawassee River, Michigan (May 2005, Limno-Tech, Inc.)
  • Received by the DEQ from Dow on May 17, 2005
    • May 16, 2005 Submittal Letter
    • Work Plan for Future Study
      • Tittabawassee River Floodplain Scoping Study Work Plan (May 2005, CH2M Hill)
    • Reports and Work Plan for Completed Studies
    • Ecological Risk Assessment Support Sampling (March 2005, CH2M Hill)
    • Tittabawassee River Sediment Dioxin/Furan Concentration Variability (March2005, CH2M Hill) and
      Appendix C
    • Probing and Coring Study for Characterization of Sediment Type and Thickness of Unconsolidated Deposits, Tittabawassee River (November 2004, Limno-Tech, Inc.) and  Transect Viewer  
    • Preliminary Flow and Solids Monitoring 2003-2004 Tittabawassee River, Michigan (November 2004, Limno-Tech, Inc.) [Note:  Level Sensor Data Available from Lansing and Bay City Offices Upon Request]
    • Non-Analytical Sampling Activities for Tittabawassee River   (April 2005, CH2M Hill)

• Dow Petition (Submitted 10/1/2007 and Revised 1/21/2008)
• DEQ Memorandum Recommending Approval (5/8/2008)
• DEQ Draft Approval
• DEQ Public Notice - Intent to Approve Petition
   

DEQ Requests to Dow for information and documents concerning the release of dioxins, furans, and other hazardous constituents from Dow's Midland Facility

• May 10, 2005 Follow-up Information Requestand Attachment
• May 6, 2005 Formal Information Request   

DEQ/Dow Framework (1/20/05)

Maps and Information

• Michigan Soil Background Dioxin Data
• Summary of Midland Area Dioxin Samples 
• Tittabawassee River Flood Plain Contamination

Unapproved Versions of Dow Remedial Investigation Scopes of Work and Interim Response Activities (IRA) Work Plans and DEQ/U.S. EPA Comments      

• Dow's February 17, 2004 Revised SOW, Tittabawassee River Sediments and Floodplain - Currently Under DEQ Review
  • Attachment A - IRA Work Plan:  Communications
  • Attachment B - IRA Work Plan:  Tittabawassee River Floodplain Soils
  • Attachment C - IRA Work Plan:  Imerman Park
  • Attachment D - IRA Work Plan:  West Michigan Park
  • Attachment E - IRA Work Plan:  Freeland Festival Park
  • Attachment F - IRA Work Plan:  Center Road Boat Launch
  • Attachment G - SOW Schedule
  • Attachment H - RI Work Plan Outline
• Dow's February 17, 2004 Revised SOW , Midland Area Soils - Currently Under DEQ Review
  • Attachment A  - IRA Work Plan:  Communications
  • Attachment B  - IRA Work Plan: Midland Soils
  • Attachment C  - SOW Schedule 
  • Revised Attachment C  - SOW Schedule, Received March 4, 2004
  • Attachment D  - RI Work Plan Outline
• DEQ's January 26, 2004 Approval of Extension for Response to Notice of Deficiency
• DEQ's December 12, 2003 Notice of Deficiency Cover Letter  and  Enclosure
• U.S. EPA's August 26, 2003 Preliminary Review Comments
• DEQ's August 14, 2003 Preliminary Review Comments
• Dow's August 11, 2003 Midland Area Soils SOW
• Dow's August 11, 2003 Tittabawassee River and Flood Plain SOW

Aquatic Ecological Risk Assessment

• March 5, 2004 Dow's Response to the DEQ's February 4, 2004 Letter Regarding the DEQ Funded Aquatic Ecological Risk Assessment
• February 4, 2004 DEQ's Response to Dow's December 19, 2003 Comments on the DEQ Aquatic Ecological Risk Assessment (The response includes reviews by Galbraith Environmental Sciences and the U.S. EPA)
• December 19, 2003 Dow's Comments on the DEQ Aquatic Ecological Risk Assessment
• December 1, 2003 - Press Release: DEQ Funded Aquatic Ecological Risk Assessment Identifies Risks and Impacts to Wildlife Resulting from Dioxin and Furan Contaminated Sediments in the Tittabawassee River
• October 2003 - Tittabawassee River Aquatic Ecological Risk Assessment - Final. Prepared for the DEQ by Hector Galbraith; MS PowerPoint presentation (This file is large and may take a few minutes to download)
• October 2003 - Dr. Galbraith's Final Aquatic Ecological Risk Assessment Report for the Tittabawassee River
  •   Figure 6-1
  •   Figure 6-2
  •   Figure 6-3
  •   Figure 6-4
  •   Figure 6-5  

Community Involvement

• DEQ/Dow Community Involvement

Approved Interim Response Activities (IRA) Under SOWs

• IRA Work Plan: Communications  Approved October 7, 2004
• Limited Approval of Sampling Sections of Draft Wild Game Sampling Work Plan for the Tittabawassee River Floodplain Near Midland, Michigan and Transmittal of Technical Review Comments Limited Approval November 7, 2003, (Work Plan Received October 23, 2003; Not Available Electronically - Revised Work Plan Submitted November 24, 2003, in Response to Technical Review Comments is Available Below)
• Approved Work Scope for the Interim Response Activity of Evaluating Wild Game Taken from the Tittabawassee River Floodplain for Human Consumption Approved October 21, 2003

IRAs Submitted to DEQ for Review Under SOWs But Not Yet Approved

Please Note:  These documents are currently under review and are not yet approved by the DEQ.  They are being made available for public information purposes during the DEQ's review process.  Upon approval, final approved IRA Work Plans and approval letters will be placed on this website.

• Revised DRAFT Work Plan for the Interim Response Activity of Evaluating Wild Game Taken from the Tittabawassee River FloodplainReceived November 24, 2003
• DRAFT Interim Response Activities Work Plan - Imerman Park Received October 30, 2003
• DRAFT Interim Response Activities Work Plan - Freeland Festival Park Received October 30, 2003
• DRAFT Interim Response Activities Work Plan - West Michigan Park  Received October 30, 2003
• DRAFT Interim Response Activities Work Plan - Center Road Boat Launch Received October 30, 2003

Other Work Scopes and Work Plans Submitted Under the SOWs

• Clarification Letter Regarding How the Dow Grant to Michigan State University for Ecological Studies Relates to the Ecological Risk Assessment Required Under the Operating License Received December 2, 2003
• Transmittal E-Mailand Revised Work Plan for Preliminary Flow/Solids Monitoring and Sediment Thickness Characterization (Tittabawassee River) Received November 12, 2003
  Revised Health and Safety Plan for Preliminary Flow/Solids Monitoring and Sediment Thickness Characterization Received November 12, 2003
• Revised Quality Assurance Project Plan for Preliminary Flow/Solids Monitoring and Sediment Thickness Characterization Received November 12, 2003
• Work Plan for Preliminary Flow/Solids Monitoring and Sediment Thickness Characterization (Tittabawassee River) Received October 15, 2003
• Health and Safety Plan for Preliminary Flow/Solids Monitoring and Sediment Thickness Characterization Received October 15, 2003
• Quality Assurance Project Plan for Preliminary Flow/Solids Monitoring and Sediment Thickness Characterization Received October 15, 2003
• Work Scope for Flow and Solids Monitoring (Tittabawassee River) Received October 10, 2003

Related Links 

Tittabawassee River Flood Plain Contamination

Operating License Information

Dow Midland Plant Operating License

• Dow Operating License Amendment 4 (Minor Modifications) - 3/10/06
  • Final Version
  • Approval Letter and Version Showing Text Changes
• Dow Operating License Amendment 3 (Minor Modifications) - 9/30/05