2009

10/23/09

Letter from Martha Mottley, Sierrita, to Cynthia Campbell, ADEQ; Groundwater Monitoring Report, Second and Third Quarter 2009, Mitigation Order on Consent, Docket No. P-50-06 (PDF file - 367 pages)

9/30/09

Letter from Ned Hall, Sierrita, to Cynthia Campbell, ADEQ; Mitigation Order on Consent
No. P-50-06, July1, 2009 through September 30, 2009, Status Report (PDF file - 3 pages)

9/11/09

Letter from Martha Mottley, Sierrita, to Cynthia Campbell, ADEQ; Mitigation Order on Consent No. P-50-06, Aquifer Testing Results Associated with Feasibility Studies (PDF file - 131 pages)

9/03/09

Letter from Martha Mottley, Sierrita, to Cynthia Campbell, ADEQ; Mitigation Order on Consent No. P-50-06, Monitor Well Installation Report Mo-2009-1 (PDF file - 78 pages)

6/30/09

Letter from Ned Hall, Sierrita, to Cynthia Campbell, ADEQ; Mitigation Order on Consent No. P-50-06, April 1, 2009 through June 30, 2009, Status Report
(PDF file – 4 pages)

6/12/09

Letter from Ned Hall, Sierrita to Cynthia Campbell, ADEQ; Mitigation Order on Consent
No. P-50-06 Supplemental Information on Recommended Groundwater Monitoring for Sulfate (PDF file - 3 pages)

5/15/09

Letter from Ned Hall, Sierrita; to Cynthia Campbell, ADEQ; Mitigation Order on Consent No. P-50-06, Response to ADEQ Comments on Recommended Groundwater Monitoring for Sulfate (PDF file - 6 pages)

5/08/09

Letter from Ned Hall, Sierrita, to Cynthia Campbell, ADEQ; Mitigation Order on Consent Docket No. P-50-06, Response to ADEQ Comments on the Feasibility Study and Mitigation Plan (PDF file - 50 pages)

4/17/09

Letter from Cynthia Campbell, ADEQ, to Ned Hall, Sierrita; Mitigation Order on Consent
No. P-50-06, Groundwater Monitoring for Sulfate (PDF file - 2 pages)

3/31/09

Letter from Ned Hall, Sierrita, to Cynthia Campbell, ADEQ; Mitigation Order on Consent No. P-50-06, January 1, 2009 through March 31, 2009, Status Report (PDF file – 2 pages)

3/30/09

Letter from Ned Hall, Sierrita, to Cynthia Campbell, ADEQ; Groundwater Monitoring Report, First Quarter 2009, Mitigation Order on Consent, Docket No. P-50-06 (PDF file – 354 pages)

3/6/09

Letter from Cynthia Campbell, ADEQ to Ned Hall, Sierrita; Mitigation Order on Consent No. P-50-06, ADEQ’s Response to Freeport’s Feasibility Report (PDF file – 6 pages)

2/2/09

Letter from Ned Hall, Sierrita, to Cynthia Campbell, ADEQ; Revised Aquifer Characterization Report – Mitigation Order on Consent, Docket No. P-50-06 (PDF files) (Part A – 69 pages) (Part B – 10 pages)(Part C – 51 pages)(Part D – 204 pages)(Part E – 251 pages)(Part F – 275 pages)(Part G – 116 pages)

1/26/09

Letter from Cynthia Campbell, ADEQ to Ned Hall, Sierrita; Mitigation Order on Consent No. P-50-06, Recommended Groundwater Monitoring for Sulfate Your Letter Dated December 23, 2008 (PDF file - 2 pages)

2008

12/30/08

Letter from Ned Hall, Sierrita, to Cynthia Campbell, ADEQ; Mitigation Order on Consent No. P-50-06, October 1, 2008 through December 31, 2008, Status Report (PDF file - 2 pages)

12/23/08

Letter from Ned Hall, Sierrita, to Cynthia Campbell, ADEQ; Mitigation Order on Consent, Docket No. P-50-06, Recommended Groundwater Monitoring for Sulfate (PDF file - 4 pages)

12/19/08

Letter from Ned Hall, Sierrita, to Cynthia Campbell, ADEQ; Groundwater Monitoring Report, Fourth Quarter 2008, Mitigation Order on Consent, Docket No. P-50-06 (PDF file - 443 pages)

10/23/08

Letter from Ned Hall, Sierrita, to Cynthia Campbell, ADEQ; Mitigation Order on Consent, Docket No. P-50-06, Feasibility Study  (Report Text and Tables - 163 pages)  (Report Figures- 26 pages) (Appendix A - 65 pages)  (Appendix B - 40 pages)  (Appendix C - 43 pages)  (Appendix D -34 pages)  (AppendiX E - 13 pages)  (Appendix F - 58 pages)  (Appendix G - 45 pages) (Appendix H - 23 pages)

9/30/08

Letter from Ned Hall, Sierrita, to Cynthia Campbell, ADEQ; Mitigation Order on Consent No. P-50-06, July 1, 2008 through September 30, 2008, Status Report  
(PDF file - 2 pages)

9/29/08

Letter from Ned Hall, Sierrita, to Cynthia Campbell, ADEQ; Groundwater Monitoring Report, Third Quarter 2008, Mitigation Order on Consent, Docket No. P-50-06 
(PDF file - 379 pages)

9/29/08

Letter from Ned Hall, Sierrita, to Cynthia Campbell, ADEQ; Mitigation Order on Consent, Docket No. P-50-06, Response to ADEQ’s September 5, 2008 Comments
(PDF file - 30 pages)

9/5/08

Letter from Cynthia S. Campbell, ADEQ to Ned Hall, Sierrita: Mitigation Order on Consent, Docket No. P-50-06, ADEQ Response to Freeport’s August 25, 2008 Letter
(PDF file - 2 pages)

8/25/08

Letter from Ned Hall, Sierrita to Cynthia S. Campbell, ADEQ: Mitigation Order on Consent, Docket No. P-50-06, Response to ADEQ’s July 21, 2008 Comments (PDF file - 2 pages)

7/21/08

Letter from Cynthia S. Campbell, ADEQ, to Ned Hall, Sierrita - Mitigation Order on Consent No. P-50-06, ADEQ’s Response to Freeport’s Comments on ADEQ’s Initial Response to the Sierrita Aquifer Characterization Report (PDF file - 2 pages)

6/30/08

Letter from Ned Hall, PDSI, to Robert Casey, ADEQ; Mitigation Order on Consent No. P-50-06, April 1, 2008 through June 30, 2008, Status Report  (PDF file - 2 pages)

6/24/08

Letter from Ned Hall, PDSI, to Robert Casey, ADEQ; Groundwater Monitoring, Second Quarter 2008, Mitigation Order on Consent, Docket No. P-50-06  (PDF file - 374 pages)

6/12/08

Letter from Ned Hall, Sierrita, to Cynthia Campbell, ADEQ; Mitigation Order on Consent No. P-50-06, Response to Arizona Department of Environmental Quality Comments on the Aquifer Characterization Report (PDF file - 41 pages) 

4/24/08

Letter from Cynthia S. Campbell, ADEQ to E. L. (Ned) Hall, Sierrita; Mitigation Order, Docket No: P-50-06 - Review of Aquifer Characterization Report (PDF file - 25 pages)

4/17/08

Letter from Ned Hall, Sierrita, to Robert Casey, ADEQ; Mitigation Order on Consent No. P-50-06, Proposed Project Schedule Revision (PDF file - 2 pages)

3/31/08

Letter from Ned Hall, PDSI, to Robert Casey, ADEQ; Mitigation Order on Consent No. P-50-06, January 1, 2008 through March 31, 2008, Status Report (PDF file - 2 pages)

3/26/08

Letter from Robert Casey, ADEQ to Ned Hall, Sierrita Operations; Focused Feasibility Study (PDF File - 13 pages)

3/20/08

Letter from Ned Hall, PDSI, to Robert Casey, ADEQ; Groundwater Monitoring Report First Quarter 2008, Phelps Dodge Sierrita, Inc. – Mitigation Order on Consent, Docket No. P-50-06 (PDF file - 389 pages)

1/31/08

Letter from Ned Hall, PDSI, to Robert Casey, ADEQ; Quarterly Groundwater Monitoring, Phelps Dodge Sierrita, Inc. - Mitigation Order onConsent, Docket No. P-50-06 (PDF file - 1 page)

2007

12/28/07

Letter from Ned Hall, PDSI, to Robert Casey, ADEQ; Mitigation Order on Consent No. P-50-06, September 30, 2007, through December 31, 2007, Status Report 
(PDF file - 2 pages)

12/28/07

Letter from Ned Hall, PDSI, to Robert Casey, ADEQ; Final Aquifer Characterization Report, Phelps Dodge Sierrita, Inc. – Mitigation Order on Consent, Docket No. P-50-06  (PDF files) 
(Part A - 56 pages)  (Part B - 8 pages)  (Part C - 44 pages)  (Part D -201 pages)  (Part E - 238 pages)  (Part F - 320 pages)  (Part G - 136 pages)

12/28/07

Letter from Ned Hall, PDSI, to Robert Casey, ADEQ; Focused Feasibility Study, Phelps Dodge Sierrita, Inc. – Mitigation Order on Consent, Docket No. P-50-06  (PDF files) (Part A - 83 pages)  (Part B - 52 pages)

12/20/07

Letter from Ned Hall, PDSI, to Robert Casey, ADEQ; Groundwater Monitoring Report, Fourth Quarter 2007, Phelps Dodge Sierrita, Inc. – Mitigation Order on Consent, Docket No. P-50-06
(PDF file - 437 pages)

11/16/07

Letter from Ned Hall, PDSI, to Robert Casey, ADEQ; Mitigation Order on Consent No. P-50-06; Revised Interceptor Wellfield Report (PDF files)
(Part A - 68 pages)  (Part B - 103 pages)

10/26/07

Letter from Ned Hall, PDSI, to Robert Casey, ADEQ; Mitigation Order on Consent No. P-50-06; Request to Cancel Community Advisory Group Meeting (PDF File - 1 page)

9/28/07

Letter from Ned Hall, PDSI, to Robert Casey, ADEQ; Mitigation Order on Consent No. P-50-06 July 1, 2007 through September 30, 2007 Status Report (PDF File - 2 pages)

9/27/07

Letter from Ned Hall, PDSI, to Robert Casey, ADEQ; Groundwater Monitoring Report, Third Quarter 2007, Phelps Dodge Sierrita, Inc. - Mitigation Order on Consent No. P-50-06  (PDF files) (Part A - 31 pages)  (Part B - 30 pages)  (Part C - 618 pages)

9/21/07

Letter from Ned Hall, PDSI, to Robert Casey, ADEQ; Mitigation Order on Consent No. P-50-06 Proposed Project Schedule Revision/Notice of Force Majeure  (PDF File - 2 pages)    

6/29/07

Letter from Chad Fretz, PDSI, to Robert Casey, ADEQ; Mitigation Order on Consent No. P-50-06 – April 1, 2007 through June 30, 2007 Status Report (PDF file - 2 pages)

6/28/07

Letter from Chad Fretz, PDSI, to Robert Casey, ADEQ; Groundwater Monitoring Report, Second Quarter 2007, Phelps Dodge Sierrita, Inc. - Mitigation Order on Consent No. P-50-06  (PDF files)
(Part A - 95 pages)  (Part B - 55 pages) (Part C - 50 pages)(Part D - 50 pages)(Part E - 50 pages)(Part F - 50 pages)  (Part G - 51 pages)

5/31/07

Letter from Ned Hall, PDSI, to Robert Casey, ADEQ; Mitigation Order on Consent No. P-50-06, Response to Comments on Evaluation of the Current Effectiveness of the Sierrita Wellfield Report (PDF File - 5 pages)

5/31/07

Letter from Ned Hall, PDSI, to Robert Casey, ADEQ; Mitigation Order on Consent No. P-50-06, Response to Comments on Identification of Potential Interim Actions, Groundwater Monitoring Report, Well Inventory Report (PDF file - 7 pages)

4/17/07

Letter from Cynthia S. Campbell, ADEQ, to Ned Hall, PDSI; Mitigation Order on Consent, Docket No. P-50-06, Evaluation of the Current Effectiveness of the Sierrita Wellfield
(PDF file - 3 pages)

3/30/07

Letter from Ned Hall, PDSI, to Robert Casey, ADEQ; Groundwater Monitoring Report, First Quarter 2007 Phelps Dodge Sierrita, Inc. – Mitigation Order on Consent, Docket No. P-50-06 (PDF files)
(Part A - 28 pages) (Part B - 3 pages) (Part C - 97 pages) (Part D - 399 pages) (Part E - 397 pages)

3/30/07

Letter from Ned Hall, PDSI, to Robert Casey, ADEQ; Mitigation Order on Consent No. P-50-06 – January 1, 2007 through March 31, 2007 Status Report (PDF file - 2 pages)

3/12/07

Letter from Robert Casey, ADEQ, to Ned Hall, PDSI; Mitigation Order on Consent, Docket No: P-50-06 – Identification of Potential Interim Actions, Groundwater Monitoring Report, Well Inventory Report (PDF file - 4 pages)

2/27/07

Letter from Ned Hall, PDSI, to Robert Casey, ADEQ; Mitigation Order on Consent No. P-50-06 – Evaluation of the Current Effectiveness of the Sierrita Interceptor Wellfield (PDF file - 110 pages)

2006

12/31/06

Letter from Ned Hall, PDSI, to Robert Casey, ADEQ; Mitigation Order on Consent No. P-50-06 – September 13, 2006 through December 31, 2006 Status Report
(PDF file - 2 pages)

12/29/06

Letter from Ned Hall, PDSI, to Robert Casey, ADEQ; Groundwater Monitoring Report, Fourth Quarter 2006 Phelps Dodge Sierrita, Inc. – Mitigation Order on Consent, Docket No. P-50-06
(PDF file - 34 pages)

12/22/06

Letter from Ned Hall, PDSI, to Robert Casey, ADEQ Identification of Potential Interim Actions
Phelps Dodge Sierrita, Inc. – Mitigation Order on Consent, Docket No. P-50-06
(PDF file - 69 pages)

12/21/06

Letter from Ned Hall, PDSI, to Robert Casey, ADEQ Well Inventory Report Phelps Dodge Sierrita, Inc. – Mitigation Order on Consent, Docket No. P-50-06 (PDF file - 85 pages)

11/15/06

Letter from Cynthia Campbell, ADEQ, to John Brack, PDSI; Mitigation Order on Consent, Docket No: P-50-06 – Work Plan (revised work plan approval) (PDF file - 2 pages)

11/13/06

Letter from Ned Hall, PDSI, to Robert Casey, ADEQ; Transmittal of Health and Safety plan for Aquifer Characterization Plan - Mitigation Order on Consent, Docket No: P-500-06
(PDF file - 138 pages)

10/31/06

Letter from John D. Brack, PDSI, to Robert Casey, ADEQ; Transmittal of Revised Work Plan Materials Mitigation Order on Consent, Docket No: P-500-06 (PDF file - 53 pages)

10/30/06

Letter from John D. Brack, PDSI, to Robert Casey, ADEQ; Work Plan Addendum and Phelps Dodge Sierrita, Inc. Response to ADEQ Work Plan Comments Mitigation Order on Consent, Docket No: P-500-06 (PDF file - 34 pages)

10/24/06

Letter from John D. Brack, PDSI, to Cynthia Campbell, ADEQ; Revised Schedule for Mitigation Order on Consent, Docket No. P-50-06 (PDF file - 4 pages)

9/22/06

Letter from Robert Casey, ADEQ, to John D. Brack, PDSI; RE: Mitigation Order On Consent No. P-50-06 – Work Plan Response (PDF file - 11 pages)

9/12/06

Letter from Ned Hall, PDSI, to Robert Casey, ADEQ; RE: Mitigation Order On Consent No. P-50-06 – June 15, 2006 through September 13, 2006 Status Report
(PDF file - 2 pages)

9/7/06

Letter from John D. Brack, PDSI to Robert Casey, ADEQ; RE: Amendment to Work Plan to Characterize and Mitigate Sulfate with Respect to Drinking Water Supplies in the Vicinity of the Phelps Dodge Sierrita Tailing Impoundment (PDF file - 4 pages)

8/11/06

Letter from John D. Brack, PDSI to Robert Casey, ADEQ; RE: Work Plan Phelps Dodge Sierrita, Inc. – Mitigation Order on Consent, Docket No. P-50-06 (PDF file - 352 pages)

6/15/06

Mitigation Order On Consent, Docket No. P-50-06 in the matter of Phelps Dodge Sierrita Mine (PDF file - 15 pages)