Title:
Attachment 1:

Abstract:
Quantifying the Origin and Geometry of Circular Sag Structures in Northern Fort Worth Basin, Texas: Paleocave Collapse, Pull-apart Fault systems, or Hydrothermal Alteration? September 2007, Page 1295. This document can be viewed at the USEPA Docket Center, Public Reading Room. Address: USEPA West, 1301 Constitution Ave. NW, Room 3334, Washington, DC 20004. Telephone: 202-566-1744; Email: docket-customerservice@epa.gov

Title:
Attachment 2: Figure 1

Abstract:
Quantifying the Origin and Geometry of Circular Sag Structures in Northern Fort Worth Basin, Texas: Paleocave Collapse, Pull-apart Fault systems, or Hydrothermal Alteration? September 2007, Page 1297. This document can be viewed at the USEPA Docket Center, Public Reading Room. Address: USEPA West, 1301 Constitution Ave. NW, Room 3334, Washington, DC 20004. Telephone: 202-566-1744; Email: docket-customerservice@epa.gov.

Title:
Attachment 3: Oxy Sealy SC Figure 2

Abstract:
Quantifying the Origin and Geometry of Circular Sag Structures in Northern Fort Worth Basin, Texas: Paleocave Collapse, Pull-apart Fault systems, or Hydrothermal Alteration? September 2007, Page 1298. This document can be viewed at the USEPA Docket Center, Public Reading Room. Address: USEPA West, 1301 Constitution Ave. NW, Room 3334, Washington, DC 20004. Telephone: 202-566-1744; Email: docket-customerservice@epa.gov.

Title:
Attachment 4: Figure 3

Abstract:
Quantifying the Origin and Geometry of Circular Sag Structures in Northern Fort Worth Basin, Texas: Paleocave Collapse, Pull-apart Fault systems, or Hydrothermal Alteration? September 2007, Page 1301. This document can be viewed at the USEPA Docket Center, Public Reading Room. Address: USEPA West, 1301 Constitution Ave. NW, Room 3334, Washington, DC 20004. Telephone: 202-566-1744; Email: docket-customerservice@epa.gov.

Title:
Attachment 5: Barnett Mapped Frac Treatments/TVD

Abstract:
Quantifying the Origin and Geometry of Circular Sag Structures in Northern Fort Worth Basin, Texas: Paleocave Collapse, Pull-apart Fault systems, or Hydrothermal Alteration? September 2007. This document can be viewed at the USEPA Docket Center, Public Reading Room. Address: USEPA West, 1301 Constitution Ave. NW, Room 3334, Washington, DC 20004. Telephone: 202-566-1744; Email: docket-customerservice@epa.gov.

Title:
Attachment 6: The American Oil & Gas Reporter July 2010

Abstract:
Data Confirm Safety Of Well Fracturing reproduced for Reproduced for Halliburton Pinnacle with permission from The American Oil & Gas Reporter. This document can be viewed at the USEPA Docket Center, Public Reading Room. Address: USEPA West, 1301 Constitution Ave. NW, Room 3334, Washington, DC 20004. Telephone: 202-566-1744; Email: docket-customerservice@epa.gov

Title:
Comments at hearing dated September 28 Arlington TX