Letters From the Commissioners The letters found below may be of interest to those of you who are following certain Commission issues. In these letters the Commissioners explain their intent on the matter.

Letters Signed By All Commissioners

To Chairman Joseph T. Kelliher re:  Market Redesign Technical Upgrade (“MRTU”) Seams Technical Conference in Phoenix– January 16, 2007 To Mr. J. U’Ren, Ms. Shirley Agnos and Ms. Tara L. Jackson – October 3, 2006 To The Honorable Samuel Bodman and The Honorable Gale Norton re:  Energy Policy Act of 2005:  Indian Lands Rights-of-Way – September 19, 2005 To The Honorable Joe Shirley, Jr., The Honorable Lawrence T. Morgan and Jim Cleary – September 8, 2005 Commission asks Congress for help in meeting new Arsenic Rule – January 5, 2004 To Sen. McCain Regarding Local Number Portability

William A. Mundell

Letter to Messrs. Post and Davis re:  Palo Verde Security Concerns - April 26, 2007 Letter to Chairman Gleason re:  Reconsideration of Decision No. 68858, Arizona-American Water Company, Paradise Valley Water District – April 17, 2007 Docket Nos. W-01303A-05-0405 and W-01303A-05-0910 Letter to Mr. Matthew J. Smith re:  Public Records Request for Perkins Mountain Water Company and Perkins Mountain Utility Company – February 20, 2007 Docket Nos. W-20380A-05-0490 and SW-20379A-05-0489 Letter to Colleagues re:  Request for a Special Open Meeting to Discuss Issues Related to Natural Gas – January 18, 2007 Letter to Colleagues re:  Public Comment Meeting in Wilcox – January 17, 2007 Letter to Messrs Johnson, Rossie, Smith and Quinn re:  Quality of Service Task Force – January 8, 2007 Letter to Colleagues re:  Amending Commission Rule Regarding Certificates of Convenience and Necessity for Water Utilities (R14-2-402) – January 2, 2007 Letter to The Honorable Terry Goddard re:  Renewable Energy Standard and Tariff Rules – December 12, 2006 Docket No. RE-00000C-05-0030 Letter to Mr. Usama Abujbarah re:  Desert Hills Water Company to Comply with Commission Rules and Regulations – October 11, 2006 Docket No. W-02124A-06-0379 Letter to Colleagues and Parties to the Docket re:  APS’ Application for a Rate Increase; Palo Verde Nuclear Outages During Summer 2005; Fuel and Purchased Power Practices of APS – October 6, 2006 Docket Nos. E-01345A-05-0816, E-01345A-05-0826 and E-01345A-05-0827 Letter to Colleagues and Parties to the Docket re:  APS’ Application for a Rate Increase; Palo Verde Nuclear Outages During Summer 2005; Fuel and Purchased Power Practices of APS – October 3, 2006 Docket Nos. E-01345A-05-0816, E-01345A-05-0826 and E-01345A-05-0827 Letter to Colleagues re:  Johnson Utilities, L.L.C. Requests to Amend Decisions Nos. 68235, 68236 and 68237 – July 27, 2006 Letter to Colleagues re:  Possible Special Open Meeting to Address APS’ Improved Financial Condition – July 26, 2006 Docket No. E-01345A-05-0816 Letter to Mr. Ernest Johnson re:  Perkins Mountain Water Co. Application for CC&N and Perkins Mountain Utility Co. Application for CC&N – May 24, 2006 Docket Nos. W-20380A-05-0490, SW-20379A-05-0489 Letter to ACC Commissioners and Parties to the Docket re:  Arizona Public Service Company Emergency Rate Increase; Arizona Public Service Company Rate Increase; Arizona Public Service Company Application for New Experimental Residential Time-Of-Use Rate Schedules – March 28, 2006 Docket Nos. E-01345A-06-0009, E-01345A-05-0816 and E-01345A-05-0674 respectively Letter to Mr. Michael T. Langston re:  Pipeline Concerns – March 13, 2006 Letter to Mr. Jack Davis re:  APS Plan of Administration and Surcharge Application – January 18, 2006 Docket Nos. E-01345A-03-0437, E-01345A-05-0526 Letter to ACC Commissioners and Parties to the Docket re:  APS Rate Case – January 5, 2006 Docket No. E-01345A-05-0816 Letter to ACC Commissioners and Parties to the Docket re:  Settlement Agreement Between Cox and Vistancia Communications – November 28, 2005 Docket Nos. T-03471A-05-0064, T-00000K-04-0927 and T-00000I-04-0749 Letter to ACC Commissioners re:  APS Surcharge Request – October 27, 2005 Docket Nos. E-01345A-03-0437 and E-01345A-05-0526 Letter to ACC Commissioners re:  Environmental Portfolio Standard – October 27, 2005 Docket No. RE-00000C-05-0030 Letter to ACC Commissioners re:  Shutdown of Palo Verde; APS Power Supply Adjustor Mechanism – October 18, 2005 Docket Nos. E-01345A-05-0526 and E-01335A-03-0437 Letter to ACC Commissioners re:  APS Application for Authorization to Acquire Out-of-State Renewable Resources – October 11, 2005 Docket No. E-01345A-05-0675 Letter to ACC Commissioners and Parties to the Docket re:  Environmental Portfolio Standard – August 16, 2005 Docket No. RE-00000C-05-0030 Letter to Mr. Patrick Quinn re:  In the Matter of the Merger of Qwest Communications and U S West Communications – July 11, 2005 Docket No. T-01051B-99-0497; Decision No. 62672 Letter to ACC Commissioners re:  Environmental Portfolio Standard – June 23, 2005 Docket No. RE-00000C-05-0030 Letter to Mr. Richard Kinder re:  Pipeline Concerns – May 13, 2005 Letter to ACC Commissioners re:  Palo Verde Utilities Company, LLC; Santa Cruz Water Company, LLC – May 12, 2005 Docket Nos. SW-03575A-04-0767 and W-03576A-04-0767 Letter to Mr. Dennis Joyce re:  Editorial Response to Richard Ducote’s Article on the Environmental Portfolio Standard (“EPS”) – April 29, 2005 Docket No. RE-00000C-05-0030 Letter to ACC Commissioners re:  Environmental Portfolio Standard – March 21, 2005 Docket No. RE-00000C-05-0030 Letter to Coconino County Board of Supervisors re:  Environmental Portfolio Standard Rules – February 11, 2005 Docket Nos. RE-00000C-00-0377 and RE-00000C-05-0030 Letter to ACC Commissioners re:  State of Competition for Telecommunication Services in Arizona – October 15, 2004 Letter to ACC Commissioners and Parties of Record re:  Response to the August 31, 2004 letter from Saguaro Utility Group L.P.; In the Matter of the Reorganization of UniSource Energy Corporation – September 9, 2004 Docket No. E-04230A-03-0933 In Matter of the Reorganization of UniSource Energy Corporation – August 18, 2004 Docket No. E-04230A-03-0933 Letter to ACC Commissioners re:  Truth in Billing – August 5, 2004 UniSource/Pinnacle West Contract Renegotiations and Guardian Industries Corp. negotiations for a Special Contract –  June 30, 2004 Docket Nos. E-01032C-00-0751, G-01032A-02-0598, E-01933A-02-0914, E-01032C-02-0914, G-01032A-02-0914 and G-01032E-03-0515 In Matter of Reorganization of UniSource Energy Corporation –  June 10, 2004 Docket No. E-04230A-03-0933 UniSource Energy Corporation and Citizens Communications Sale of Assets, Docket Nos. E-01933A-02-0914, E-01032C-02-0914, G-01032A-02-0914 and Public Comment Sessions on Reorganization of UniSource Energy Corporation, Docket No. E-04230A-03-0933 –  April 19, 2004 Natural Gas Price Issues in Prescott; UNS Gas & Citizens Communications PGA Surcharge, Docket No. G-01032E-03-0515; Citizens Communications & UNS Energy Corporation – Sale of Assets, Docket Nos. E-01032C-00-0751, G-01032A-02-0598, E-01933A-02-0914, E-01032C-02-0914, G-01032A-02-0914  – March 10, 2004 Letter to Chairman Marc Spitzer re Arizona Public Service rate case – March 8, 2004 Docket No. E-01345A-03-0437 Natural Gas Price Issues in Prescott; UNS Gas & Citizens Communications PGA Surcharge, Docket No. G-01032E-03-0515; Citizens Communications & UNS Energy Corporation – Sale of Assets, Docket Nos. E-01032C-00-0751, G-01032A-02-0598, E-01933A-02-0914, E-01032C-02-0914, G-01032A-02-0914  – February 27, 2004 Light Rail Project Utility Costs – February 24, 2004 Docket No. C-00000A-03-0861 APS Application for Declaratory Order regarding Bill Estimation Procedures Docket No. E-01345A-03-0775 Light Rail Project Utility Costs - December 5, 2003 Docket No. C-00000A-03-0861 Costs of Relocation of Utilities' Infrastructure Resulting from the Construction of the Phoenix Light Rail System - November 26, 2003

Jeff Hatch-Miller

Letter Re: Security Breach Involving Palo Verde Nuclear Generating Station (PVNGS) Letter to Colleagues re:  Vacancy on the Arizona Power Plant and Transmission Line Siting Committee – January 26, 2007 Letter to Colleagues re:  Proposed Special Open Meeting on Natural Gas Issues – January 23, 2007 Letter to Colleagues re:  Amending Commission Rule Regarding Certificates of Necessity and Convenience for Water Utilities (R-14-2-402) – January 2, 2007 Letter to Thomas Mumaw re:  Arizona Public Service Company – Motion to Amend Decision No. 68685 – November 30, 2006 Docket No. E-01345A-06-0009 Letter to Colleagues re:  Arizona Public Service Company – Motion to Amend Decision No. 68685 – November 14, 2006 Docket No. E-01345A-06-0009 Letter to APS and Parties to the Docket re:  Arizona Public Service Company General Rate Case – October 24, 2006 Docket Nos. E-01345A-05-0816, E-01345A-05-0826 and E-01345A-05-0827 Letter to Colleagues re:  Desert Hills Water Company, Inc. – October 5, 2006 Docket No. W-02124A-06-0379 Letter to Colleagues re:  Reaction to APS Financial Issues Report – August 21, 2006 Docket No. E-01345A-05-0816 Letter to Colleagues re:  Special Open Meeting Regarding APS’ Financial Condition – July 26, 2006 Docket No. E-01345A-05-0816 Letter to Thomas Mumaw re:  Arizona Public Service Company General Rate Case – July 21, 2006 Docket No. E-01345A-05-0816 Letter to Colleagues and Parties to the Docket re:  Generic Evaluation on the Use of Non-Traditional Financing Arrangements by Water Utilities and Their Affiliates – June 12, 2006 Docket No. W-00000C-06-0149 Letter to Jack Davis and James Pignatelli re:  Renewable Energy Standard and Tariff – June 5, 2006 Docket No. RE-00000C-05-0030 Letter to Members of the Arizona Power Plant and Transmission Line Siting Committee and Mr. Tom Campbell re:  Devers-Palo Verde No. 2 Transmission Project – May 10, 2006 Docket No. L-00000A-06-00130 Letter to ACC Commissioners and Parties to the Docket re:  Arizona Public Service Company Emergency Rate Case – March 23, 2006 Docket No. E-01345A-06-0009 Letter to ACC Commissioners re:  Proposal by Standard and Poor’s – February 2, 2006 Letter to ACC Commissioners and Parties to the Docket re:  Arizona Public Service Company; Plan of Administration and Surcharge Application – January 17, 2006 Docket Nos. E-01345A-05-0437 and E-01345A-05-0526 Letter to Mayor Phil Gordon re:  Cooperation on Pipeline Encroachment Issues – January 11, 2006  Letter to Mayor Phil Gordon re:  Summit at Copper Square; Encroachment Issues – December 9, 2005 Letter to Mayor Phil Gordon – November 23, 2005 Letter to ACC Commissioners re:  APS Demand Side Management (DSM) Programs – November 18, 2005 Docket No. E-01345A-05-0477 Letter to ACC Commissioners re:  Unplanned Outages at Palo Verde; Approval of APS’ Power Supply Adjustor – October 25, 2005 Docket Nos. E-01345A-03-0437 and E-01345A-05-0526 Letter to ACC Commissioners and Parties to the Docket re:  TEP’s Motion to Amend Decision No. 62103 and TEP’s Rate Case Review – October 21, 2005 Docket Nos. E-01933A-05-0560 and E-01933A-04-0408 Letter to ACC Commissioners re:  Application for Surcharge and Plan of Administration – September 1, 2005 Docket Nos. E-01345A-05-0526 and E-01345A-03-0437 Letter to ACC Commissioners and Parties to the Docket re:  Environmental Portfolio Standard – August 16, 2005 Docket No. RE-00000C-05-0030 Letter to Gale Garriott re:  Water Crisis in Sierra Vista – July 15, 2005 Docket Nos. W-01646A-03-0601, W-01868A-03-0601, W-02235A-03-0601, W-02230A-03-0601, W-01629A-03-0601, W-02240A-03-0601, W-02316A-03-0601 Letter to ACC Commissioners re:  McLain Water Companies – July 8, 2005 Docket Nos. W-01646A-03-0601, W-01868A-03-0601, W-02235A-03-0601, W-02230A-03-0601, W-01629A-03-0601, W-02240A-03-0601, W-02316A-03-0601 Letter to Mark A. DiNunzio re:  Utility Customer Data Security – June 27, 2005 Docket No. ACC-00000A-05-0453 Letter to Debra R. Scott re:  Utility Customer Data Security – June 27, 2005 Docket No. ACC-00000A-05-0453 Letter to Patrick J. Quinn re:  Utility Customer Data Security – June 27, 2005 Docket No. ACC-00000A-05-0453 Letter to Chris Palacios re:  Utility Customer Data Security – June 27, 2005 Docket No. ACC-00000A-05-0453 Letter to James S. Pignatelli re:  Utility Customer Data Security – June 27, 2005 Docket No. ACC-00000A-05-0453 Letter to Thomas H. Campbell re:  Utility Customer Data Security – June 27, 2005 Docket No. ACC-00000A-05-0453 Letter to James S. Pignatelli re:  Summer Peak Load Situation – June 23, 2005 Letter to William Post and Richard Silverman re:  Summer Peak Load Situation – June 22, 2005 Letter to Congressman Jeff Flake – June 21, 2005 Submission to Nogales International re:  The Real Deal about the Fate of Santa Cruz County’s Electricity System – June 15, 2005 Docket No. E-01032A-99-0401 Letter to ACC Commissioners re:  Appointment on the Power Plant and Transmission Line Siting Committee – June 9, 2005 Letter to ACC Commissioners re:  Palo Verde Utilities Company, LLC and Santa Cruz Water Company, LLC – May 12, 2005 Docket Nos. SW-03575A-04-0767 and W-03576A-04-0767 Letter to ACC Commissioners re:  Arsenic Implementation Deadline Arizona-American Water Company, Tubac Water District – May 4, 2005 Docket No. W-01303A-05-0280 Preliminary Orders for Applications for New CC&Ns and Extensions of Existing CC&Ns – February 14, 2005 Docket No. ACC-00000C-05-0037 Letter to ACC Commissioners re:  Federal Pipeline Safety Meeting – December 22, 2004 Docket No. E-01345A-04-0657 Generic Investigation of Competition in Arizona’s Telecom Markets – October 25, 2004 Docket No. T-00000I-04-0749 Letter to Senator Jarrett and Representative Hart re: Task Force on Arsenic Standards Implementation – October 18, 2004 Letter to ACC Commissioners re:  Avis Read v. Arizona Public Service Company – September 20, 2004 Docket No. E-01345A-04-0657 Letter to ACC Commissioners re:  Truth in Billing – September 3, 2004 Docket No. T-00000D-04-0582 Valley Residents Deserve Kudos – July 23, 2004 Letter to ACC Commissioners re: Investigative hearings on the fires at APS’ Westwing and Deer Valley substations – July 21, 2004 UniSource/Pinnacle West Contract Renegotiations – July 12, 2004 Docket Nos. G-01032E-03-0515, E-01032C-00-0751, G-01032A-02-0598, E-01933A-02-0914, E‑01032C-02-0914, G-01032A-02-0914 New Arsenic Rule – May 26, 2004 APS Rate Case – May 14, 2004 Docket No. E-01345A-03-0437 Valley Metro Rail Project – March 31, 2004 Docket No. C-00000A-03-0861 All Parties in Docket No. E-04230A-03-0933; In Matter of the Reorganization of UniSource Energy Corporation – March 8, 2004 Letter to Congress requesting the adoption of a national energy policy – March 5, 2004 Soaring Energy costs in Arizona – February 25, 2004 Valley Metro Rail Project – January 5, 2004 Docket No. C-00000A-03-0861 Pine Water Company Rate Case – December 9, 2003 Docket No. W-03512A-03-0279 Arizona Water Company, Phase 2 – Arsenic Cost Recovery – November 25, 2003 Docket No. W-01445A-00-0962 APS Rate Case – November 17, 2003 Docket No. E-01345A-03-0437

Mike Gleason

Dissent Opinion to Adopt the Renewable Energy Standard and Tariff (REST) Rules – November 2, 2006 Letter to Colleagues re: Wind River Resources’ Application Before the Arizona Department of Water Resources; Beaver Dam Water Company – October 18, 2006 Docket No. W-03067A-06-0117 Letter to William J. Post re: Recent APS News Release – June 8, 2006 Letter to ACC Commissioners re: Environmental Portfolio Standard (EPS) Rules – January 12, 2006 Docket No. RE-00000C-05-0030 Letter to ACC Commissioners re: APS Application for Authorization to Acquire Out-of-State Renewable Resources – October 17, 2005 Docket No. E-01345A-05-0675 Letter to ACC Commissioners re: Plan of Administration for APS’ Power Supply Adjustor – August 30, 2005 Docket No. E-01345A-03-0437 Letter to Steven M. Wheeler re: Plan of Administration and Power Supply Adjustor Calculation and Projections – August 25, 2005 Docket Nos. E-01345A-03-0437 & E-01345A-05-0526 Letter to ACC Commissioners re: Environmental Portfolio Standard Rules – August 5, 2005 Docket No. RE-00000C-05-0030 Letter to ACC Commissioners re: Environmental Portfolio Standard Rules – August 2, 2005 Docket No. RE-00000C-05-0030 Letter to ACC Commissioners re: Environmental Portfolio Standard Rules – July 25, 2005 Docket No. RE-00000C-05-0030 Proposed Environmental Portfolio Standard Rule Amendment – June 1, 2005 Docket No. E-00000C-05-0030 Letter to ACC Commissioners re: Generic Investigation (Competition in AZ telecom markets) – November 3, 2004 Docket No. T-00000I-04-0749 Letter to ACC Commissioners re: Truth in Billing – September 22, 2004 Docket No. T-00000D-04-0582 Letter to ACC Commissioners re: In the Matter of the Reorganization of UniSource Energy Corporation – September 22, 2004 Docket No. E-04230A-03-0933 Comments to the FCC on VoIP Technology – May 26, 2004 APS Rate Case – May 10, 2004 Docket No. E-01345A-03-0437 APS Rate Case – April 15, 2004 Docket No. E-01345A-03-0437 APS Rate Case – December 16, 2003 Docket No. E-01345A-03-0437 APS Rate Case – October 29, 2003 Docket No. E-01345A-03-0437 APS Rate Case – September 5, 2003 Docket No. E-01345A-03-0437 Parties to Docket - APS Rate Case – September 5, 2003 Docket No. E-01345A-03-0437 Letter to fellow Commissioner’s - APS Rate Case – September 5, 2003 Docket No. E-01345A-03-0437 APS Rate Case – July 24, 2003 Docket No. E-01345A-03-0437 Letter to Chairman Spitzer re: Phone Company Management/Livewirenet Complaint – May 20, 2003 Docket No. T-04125A-02-0796 & T-03889A-02-0796 APS Request for Adjuster Mechanism – May 12, 2003 Docket No. E-01345A-02-0403 Proposed UniSource Settlement Agreement – April 24, 2003 Docket No. G-01032A-02-0598 et al. Letter to fellow Commissioners re: APS Request for Adjuster Mechanism – April 18, 2003 Docket No. E-01345A-02-0403 Decision No. 66028 & Decision No. 66341 – March 5, 2003 UES Gas Prices & Surcharge – March 2, 2003 Sun City/City West CAP Water – January 30, 2003

Kristin K. Mayes

Letter to Mr. Ernest Johnson re:  Proposed Workshop to Examine the Re-Introduction of Integrated Resource Planning – May 01, 2007 Letter to Colleagues re:  Arrest of Former Palo Verde Nuclear Generating Station Employee – April 23, 2007 Letter to Ms. Dena Mathews re:  Arizona Corporation Commission Meeting in San Manuel – April 3, 2007 Dissent to Decision No. 69399, Empirita Water Company CC&N Extension – April 3, 2007 Docket No.W-03948A-06-0490 Letter to Parties to the Docket re:  J.D. Power Ranking of Rhodes Homes – March 14, 2007 Docket Nos.W-20380A-05-0490 & SW-20379A-05-0489 Letter to Colleagues re:  The Nuclear Regulatory Commission’s “White Flag” Finding at APS’ Palo Verde Nuclear Generating Station – February 22, 2007 Docket Nos.E-01345A-05-0816, E-01345A-05-0826 & E-1345A-05-0827 Letter to Mr. Brian McNeil re:  Issuance of a Subpoena for Mr. Jim Rhodes: Perkins Mountain Water Company, Perkins Mountain Utility – February 14, 2007 Docket Nos.W-20380A-05-0490 & SW-20379A-05-0489 Letter to Mr. Wayne Watts re:  AT&T’s Recent Decision to Lay Off 123 Arizona Employees – February 9, 2007 Docket Nos.T-03346A-05-0149 & T-02428A-06-0203 Letter to Mr. James Pignatelli re:  Tucson Electric Power Request to Propose Joint Resolutions – January 24, 2007 Docket No.E-01933A-05-0650 Letter to Colleagues re:  Proposed Special Open Meeting on Natural Gas Storage and Winter Natural Gas Prices; Proposed Winter Preparedness Meetings – January 22, 2007 Letter to Colleagues re:  Public Comment Meetings on Union Pacific Railroad Expansion Plans – January 22, 2007 Letter to Colleagues and Parties to the Docket re:  Arizona Public Service Company – January 18, 2007 Docket Nos.E-01345A-05-0816 Letter to Mr. Ernest Johnson re:  Possible use of the Small Rural Water System Fund at the Water Infrastructure Financing Authority to Satisfy a Portion of the ASUA Claim for Interim Management Fees – January 18, 2007 Docket Nos.W-01646A-06-0010, W-01868A-06-0010, W-02235A-06-0010, W-02316A-06-0010, W-02230A-06-0010, W-01629A-06-0010 and W-02240A-06-0010 Letter to Mr. John Hester re:  Recent Disruption of Service to Southwest Gas Customers – January 17, 2007 Letter to Mr. Robert Dodds re:  LPSCO Palm Valley Water Reclamation Facility – January 9, 2007 Docket Nos.SW-01428A-05-0022 and SW-01428A-06-0444 Letter to Colleagues re:  Opening a Generic Rulemaking Docket and Hosting a Workshop on Best Management Practices for Conservation at Arizona’s Private Water Companies – January 2, 2007 Letter to Colleagues and Parties to the Docket re:  Application by Wind River Resources, a Nevada Corporation, to Pump Arizona Water Supplies to Nevada; Impact on Arizona Water Companies; Beaver Dam Water Company – October 13, 2006 Docket No.W-03067A-06-0117 Letter to Colleagues and Parties to the Docket re:  Cost of Recent Palo Verde Unit I Unplanned Outage; Establishment of a Rate Stabilization Fund; Calculation of Rate Impact of the Parties’ Rate Recommendations on Customer Bills; APS General Rate Case – October 2, 2006 Docket Nos.E-01345A-05-0816, E-01345A-05-0826 and E-01345A-05-0827 Letter to Colleagues and Parties to the Docket re:  The Effect of Lower Natural Gas Prices on Arizona Public Service Company’s General Rate Case – September 26, 2006 Docket No.E-01345A-05-0816 Letter to Mr. Pat Quinn re:  Qwest’s Decision to Lay Off 360 Phoenix-Area Employees – September 18, 2006 Letter to Colleagues and Parties to the Docket re:  Inclusion of Hook-Up Fees as Part of the Arizona Public Service General Rate Case – August 31, 2006 Docket No.E-01345A-05-0816 Letter to Mr. Jack Davis re:  Renewable Energy Advertising by Arizona Public Service Company – August 28, 2006 Docket No.E-01345A-05-0816 Letter to Mr. Jay Shapiro re:  Desert hills Water Company, Inc. – August 14, 2006 Docket No.W-02124A-06-0379 Letter to Parties to the Docket re:  Gold Canyon Sewage Company Rate Case – August 9, 2006 Docket No.SW-02519A-06-0015 Letter to Mr. Jack Davis re:  Possible Special Open Meeting to Address APS’ Improved Financial Condition – August 2, 2006 Docket No.E-01345A-05-0816 Letter to Colleagues re:  Johnson Utilities, L.L.C. Requests to Amend Decision Nos. 68235, 68236 and 68237 Pursuant to A.R.S. § 40-252 – July 28, 2006 Docket Nos.WS-02987A-05-0088, WS-02987A-04-0288 and WS02987A-04-0889 Letter to Colleagues re:  Possible Special Open Meeting to Address APS’ Improved Financial Condition – July 25, 2006 Docket No.E-01345A-05-0816 Letter to Administrative Law Judge Amy Bjelland re:  Perkins Mountain Utility Company and Perkins Mountain Water Company – July 20, 2006 Docket Nos.SW-20379A-05-0489 and W-20380A-05-0490 Letter to Colleagues and Parties to the Docket re:  Renewable Energy Standard as Part of the Arizona Public Service General Rate Case – July 17, 2006 Docket No.E-01345A-05-0816 Letter to Mr. James Pignatelli re:  Possible Unisource Natural Gas Interconnection to the Transwestern Pipeline in Yavapai County – June 29, 2006 Letter to Parties to the Docket re:  Proposed AT&T/BellSouth Merger – June 29, 2006 Docket No.T-02428A-06-0203 et al. Letter to Mr. Jack Davis re:  Calculation of Above Market Cost for Wind Energy; APS General Rate Case – Renewable Energy Standard & Tariff Rules – June 28, 2006 Docket Nos. E-01345A-05-0816 and RE-00000C-05-0030 Letter to Colleagues re:  Next Steps in Allocating Funding for Distressed Water Companies – June 22, 2006 Letter to Ms. Kimberly Grouse re:  Perkins Mountain Utility Company and Perkins Mountain Water Company – June 19, 2006 Docket Nos.SW-20379A-05-0489 and W-20380A-05-0490 Letter to Ms. Kimberly Grouse re:  Perkins Mountain Utility Company and Perkins Mountain Water Company – June 19, 2006 Docket Nos.SW-20379A-05-0489 and W-20380A-05-0490 Letter to Colleagues and Parties to the Docket re:  Devers-Palo Verde No. 2 (DPV2) Power Line – June 6, 2006 Docket No.L-00000A-06-0295-00130 Letter to Mr. Richard Kinder re:  Proposed Leveraged Buyout of Kinder Morgan and its Impact on Arizona – June 2, 2006 Letter to Colleagues re:  Potential Electricity Price Gouging by RV Parks – May 24, 2006 Letter to Mr. Richard Silverman re:  Proposed Devers-Palo Verde No. 2 (DPV2) Power Line – May 11, 2006 Docket No. L-00000A-06-0295 Letter to Mr. James Pignatelli re:  Proposed Devers-Palo Verde No. 2 (DPV2) Power Line – May 11, 2006 Docket No. L-00000A-06-0295 Letter to Mr. Jack Davis re:  Proposed Devers-Palo Verde No. 2 (DPV2) Power Line – May 11, 2006 Docket No. L-00000A-06-0295 Letter to Mr. Alan Fohrer and Mr. John Fielder re:  Proposed Devers-Palo Verde No. 2 (DPV2) Power Line – May 10, 2006 Docket No. L-00000A-06-0295 Letter to Colleagues re:  Orders Preliminary – May 5, 2006 Docket No. ACC-00000C-05-0037 Letter to Mr. Wayne Watts re:  AT&T/SBC Merger and AT&T’s Announced Closing of its Small Business Customer Care Center in Mesa, AT&T/BellSouth Merger – April6, 2006 Docket Nos. T-03346A-05-0149 and T-02428A-06-0203 Letter to Colleagues and Parties to the Docket re:  Perkins Mountain Utility Company and Perkins Mountain Water Company – March 23, 2006 Docket Nos.SW-20379A-05-0489 and W-20380A-05-0490 Letter to Mr. Michael T. Langston re:  Pipeline Concerns – March 15, 2006 Letter to Colleagues re:  Perkins Mountain Water Company – March 13, 2006 Docket No.W-20380A-05-0490 Letter to Mr. Jack Davis re:  Palo Verde Unit 1 Outages and Summer Preparedness – March 7, 2006 Docket Nos. E-01345A-05-0816 and E-01345A-06-0009 Letter to Colleagues and Parties to the Docket re:  Perkins Mountain Water Company – February 17, 2006 Docket No.W-20380A-05-0490 Letter to Parties to the Docket re:  APS Emergency Rate Increase Request; Determination of Actual Costs Incurred as of April 1, 2006; Review of Precedent Surrounding Prior Emergency Rate Cases in Arizona; Rate Impact Estimated From April 1, 2005 to April 1, 2006 – February 9, 2006 Docket No.E-01345A-06-0009 Letter to Mr. Mark DiNunzio re:  Release of Emails in the Matter of the Formal Complaint of Accipiter Communications, Inc. Against Vistancia Communications, L.L.C., Shea Sunbelt Pleasant Point, L.L.C. and Cox Arizona Telecom, L.L.C. – February 3, 2006 Docket No.T-03471A-05-0064 Letter to Mr. Richard Silverman re: SRP’s Expansion of its Distributed Solar Energy Program – February 6, 2006 Letter to Mr. Jack Davis re:  Cost-Cutting Measures at APS in Light of the Company’s Rate Increase Requests; Data Requests on Advertising, Travel Expenses, Sporting Event Sponsorships – February 1, 2006 Docket No.E-01345A-06-0009 Letter to ACC Commissioners re: Further Action to Combat Hedge Funds Operating Illegally in Arizona in Light of the Mathon Fund, LLC Case – January 30, 2006 Letter to Mr. Jack Davis re:  Staff’s Investigation of the Frequency of Unplanned Outages at Palo Verde Nuclear Generating Station – January 18, 2006 Docket No.E-01345A-05-0826 Letter to Mr. Jack Davis re:  Potential Cost-Cutting Measures at APS in Light of Multiple Rate Increase Requests – January 11 2006 Docket No.E-01345A-06-0009 Letter to Mr. James Pignatelli re:  Allowing Renewable Energy Credits or “Green Tags” Generated by Customers Who Participate in Environmental Portfolio Standard-Funded Buy-Down Programs to Remain with the Customers – January 3, 2006 Docket No.RE-00000C-05-0030 Letter to Mr. Jack Davis re:  Allowing Renewable Energy Credits or “Green Tags” Generated by Customers Who Participate in Environmental Portfolio Standard-Funded Buy-Down Programs to Remain with the Customers – January 3, 2006 Docket No.RE-00000C-05-0030 Letter to the Docket re: In the Matter of the Formal Complaint of Accipiter Communications, Inc. Against Vistancia Communications, L.L.C., Shea Sunbelt Pleasant Point, L.L.C., and Cox Arizona Telcom L.L.C – December 22, 2005 Docket No. T-04371A-05-0064 Letter to ACC Commissioners re: Under-Funded Pension Plans at Arizona Utilities – December 6, 2005 Docket No. E-01345A-05-0816 Letter to ACC Commissioners re: APS DSM Programs – November 21, 2005 Docket No. E-01345A-05-0477 Letter to Parties to the Docket re: Accipiter Complaint – November 18, 2005 Docket No. T-03471A-05-0064 Letter to Jack Davis re: Arizona Public Service’s Under-Funded Pension Liability Plan– November 16, 2005 Docket No. E-01345A-05-0816 Letter re: Arizona Clean Fuels Refinery at Yuma – November 14, 2005 Letter to ACC Commissioners re: Environmental Portfolio Standard – October 31, 2005 Docket No. RE-00000C-05-0030 Letter to ACC Commissioners re: Recent Shutdown of Palo Verde Nuclear Generating Station; APS Power Supply Adjustor – October 18, 2005 Docket Nos. E-01345A-03-0437 and E-01345A-05-0526 Letter to Richard K. Davidson re: Safety of the Proposed Union Pacific Set-Out Facility in Tempe – October 12, 2005 Letter to Parties to the Docket re: UNS Gas Surcharge Request – October 11, 2005 Docket No. G-04204A-05-0596 Letter to Parties to the Docket re: APS Application for Authorization to Acquire Out-of-State Renewable Resources – October 4, 2005 Docket No. E-01345A-05-0675 Letter to Parties to the Docket re: Mitigating the Effects of High Natural Gas Price Increases This Winter; UNS Gas Surcharge Request – September 21, 2005 Docket No. G-04204A-05-0596 Letter to Parties to the Docket re: MCI/Verizon Merger – September 12, 2005 Docket Nos. T-01846B-05-0279, T-03258A-05-0279, T-03475A-05-0279, T-03289A-05-0279, T-03198A-05-0279, T-03574A-05-0279, T-02431A-05-0279, T-03197A-05-0279, T-02533A-05-0279, T-03394A-05-0279, T-03291A-05-0279 Letter to Jack Davis re: Maintenance Practices at APS Power Plants Located in Load Pockets – September 6, 2005 Letter to Parties to the Docket re: APS Application for Surcharge; Operation of the Surcharge and Purchase Supply Adjustor; $100 Million Surcharge Cap. – August 25, 2005 Docket No. E-01345A-05-0526 Letter to Cochise County Board of Supervisors re: McLain Water System Unpaid Taxes – August 8, 2005 Docket No. W-01646A-03-0601 Letter to Parties to the Docket re: APS Application for Surcharge; Operation of the Surcharge and Purchase Supply Adjustor; $100 Million Surcharge Cap. – August 4, 2005 Docket No. E-01345A-05-0526 Letter to Parties to the Docket re: TEP Rate Case – July 12, 2005 Docket No. E-01933A-04-0408 Letter to ACC Commissioners re: Disclosure of Future High Voltage Power Lines – July 6, 2005 Letter to Philip Tucker re: Diamond Valley Water Users Association – July 6, 2005 Docket No. W-03263A-05-0330 Letter to Jack Davis, James S. Pignatelli, Richard Silverman, Michael S. Hacskaylo – July 1, 2005 Letter to James S. Pignatelli, President and CEO of Tucson Electric Power – June 23, 2005 Letter to Chris Palacios, Senior Vice President Central Arizona Division of Southwest Gas Corp. – June 22, 2005 Letter to Jack Davis, President of Arizona Public Service – June 22, 2005 Letter to ACC Commissioners re: MCI-Verizon Merger – June 16, 2005 Docket Nos. T-01846B-05-0279, T-03258A-05-0279, T-03475A-05-0279, T-03289A-05-0279, T-03198A-05-0279, T-03574A-05-0279, T-02431A-05-0279, T-03197A-05-0279, T-02533A-05-0279, T-03394A-05-0279, T-03291A-05-0279 Letter to Rick Moore and Thomas Pelto re: Proposed SBC and AT&T Merger – June 9, 2005 Docket Nos. T-03346A-05-0149, T-03811A-05-0149, T-03116A-05-0149, T-02428A-05-0149, T-02016A-05-0149, T-03182A-05-0149, T-03327A-05-0149 Letter to Chris Palacios re:  Tucson Natural Gas Explosion – June 7, 2005 Letter to Tom Bannigan re:  Ruptured Kinder Morgan Pipeline – June 3, 2005 Letter to ACC Commissioners re: Cochise Water Outages/McClain Water – May 26, 2005 Docket Nos. W-01646A-03-0601, W-01868A-03-0601, W-02235A-03-0601, W-02230A-03-0601, W-01629A-03-0601, W-02240A-03-0601, W-02316A-03-0601 Letter to ACC Commissioners re: Environmental Portfolio Standard Rules – May 19, 2005 Docket No. RE-00000C-05-0030 Letter to ACC Commissioners and Parties to the Docket re: Preferred Provider Arrangements – May 3, 2005 Docket No. T-03471A-05-0064 Letter to ACC Commissioners and Parties to the Docket re: Environmental Portfolio Standard – May 2, 2005 Docket No. RE-00000C-05-0030 Letter to James Pignatelli re: Unisource PGA Surcharge – April 18, 2005 Docket No. 04204A-05-0046 Letter to Fellow Commissioners re: Arizona-American Water Company – April 18, 2005 Docket No. W-01303A-05-0280, et al Letter to Steve Owens re: Water Treatment Options – April 18, 2005 Letter to Victor Mendez re: Audits and Competitive Bidding for Railroad Safety Projects – April 14, 2005 Docket No. RR-00000B-03-0721 Letter to Tom Broderick re: Compliance Deadline for Federal Arsenic Standard – April 11, 2005 Docket Nos. WS-01303A-02-0867, WS-01303A-02-0868, WS-01303A-02-0869, WS-01303A-02-0870, W-01303A-02-0908, W-01303A-01-0983 Letter to William Post, James Pignatelli, Richard Silverman, Tyler Carlson re: Follow-up Questions Regarding the Westwing Incident Report – February 11, 2005 Docket No. E-00000J-04-0522 Letter to Tom Bannigan re:  Suspension of Arizona’s Gasoline Supply  – January 26, 2005 Commissioner Mayes to Hold Office Hours in Prescott and Tucson – January 25, 2005 Letter to William Post, James Pignatelli, Richard Silverman, Tyler Carlson re: Contents of the Navajo Transmission Operating Committee Minutes/West Wing Firewalls  – January 3, 2005 Docket No. E-00000J-04-0522 Letter to ACC Commissioners re: Pine Water Hook-up Moratorium per Decision No. 67166  – December 6, 2004 Docket No. W-03512A-03-0279 Letter to ACC Commissioners re: APS Settlement Agreement Witness Summaries  – November 2, 2004 Docket No. E-01345A-03-0437 Letter to ACC Commissioners re: Generic Investigation (Competition in AZ telecom markets)  – October 21, 2004 Docket No. T-00000I-04-0749 Letter to William Post, President, Arizona Public Service re: Avis Read Complaint   – September 20, 2004 Docket No. E-01345A-04-0657 Letter to ACC Commissioners and Parties of Record re: Request for the Ernst and Young Report and IRR Projections; In the Matter of the Reorganization of UniSource Energy Corp.   – September 14, 2004 Docket No. E-04230A-03-0933 Letter to ACC Commissioners re: recent incident involving Qwest and the Yavapai Regional Medical Center – September 13, 2004 Letter to California Public Utilities Commission  re: Mohave Generating Station –  September 10, 2004 Letter to Pat Quinn, Qwest Corporation re: recent fee increases –  September 9, 2004 Docket No. T-00000D-04-0582 Letter to ACC Commissioners re: Continuation of oversight hearings on APS substation fires; updated information on progress and testing at Westwing – August 17, 2004 Docket No. E-00000J-04-0522 Letter to ACC Commissioners re: Protecting Critical Infrastructure Post-9/11 – July 21, 2004 Letter to William Post re: the Valley’s power supply – July 14, 2004 Letter to ACC Commissioners re: UniSource/Pinnacle West Contract Renegotiations and Docket Nos. E-01032C-00-0751, G-01032A-02-0598, E-01933A-02-0914, E-01032C-02-0914, G-01032A-02-0914: Draft Policy Statement on the Encouragement of Retention of Large Electric Customers – July 7, 2004 Letter to ACC Commissioners re: gasoline price reduction – June 7, 2004 Letter to FERC re: altering Kinder Morgan tariffs on pipelines – June 7, 2004 Curtailment Plan Tariffs – May 19, 2004 Bensch Ranch Utilities, LLC – April 22, 2004 Docket No. SW-04026A-01-0499, Decision No. 66650 Letter to James Pignatelli, Tucson Electric Power/UniSource Energy – April 16, 2004 Docket Nos. G-01032A-02-0598 and E-01933A-02-0914 PG&E Chromium-6 Plume – March 26, 2004 In the Matter of the Reorganization of UniSource Energy Corporation – March 24, 2004 Docket No. E-04230A-03-0933 Voice Over Internet Protocol – March 23, 2004 Docket No. T-00000A-04-0219 Pipeline Safety/independent metallurgical testing – March 19, 2004 Docket No. G-00000A-03-0774 Proposal re UES natural gas issues – March 10, 2004 Docket Nos. G-01032A-03-0515, G-01032A-02-0598, G-01032A-02-0914, E-01032C-00-0751, E-01933A-02-0914, E-01032C-02-0914 Salt River Project’s Sustainable Portfolio Process – March 3, 2004 Docket No. RE-00000C-00-0377 UniSource Energy Services/Natural Gas Price Increases: Next Steps – March 1, 2004 Docket Nos. E-01032C-00-0751, G-01032A-02-0598, E-01933A-02-0914, E-01032C-02-0914, G-01032A-02-0914 Bark beetle epidemic in Arizona – February 18, 2004 Recent natural gas price increases in Northern Arizona - January 26, 2004 Docket Nos. G-01032A-03-0515, G-01032A-02-0598, G-01032A-02-0914, E-01032C-00-0751, E-01933A-02-0914, E-01032C-02-0914 Letter to Stacey Gerard, U.S. Office of Pipeline Safety - December 15, 2003 Docket No.  G-00000A-03-0774 Proposed Public Comments Meeting on Pipeline Safety - October 24, 2003 Docket No. G-00000A-03-0774

Gary Pierce

Letter to the Docket re:  Application of Picacho Water Company and Picacho Sewer Company for Rehearing Decision No. 69174 – January 4, 2007 Docket Nos.W-03528A-06-0313 and SW-03709A-06-0314