CPV Maryland, LLC St. Charles Facility

1
CPV Maryland, LLC St. Charles Facility an
Update

• Sandra S. Patty
• PPRP Manager
• PPRAC Meeting
• Country Inn Suites, Annapolis, MD
• August 26, 2008

2
Proposed St. Charles Project

• Located near St. Charles at the site of the
  former Kelson Ridge Project, which received a
  CPCN in 2001.
• The proposed plant, located on 76 acres, will
  have a maximum electric output of 640 megawatts.
  Plant components will include
• Two F-class natural gas combustion turbines
  arranged in combined cycle-block configuration
  with two heat recovery steam generators, one
  steam turbine generator, and associated auxiliary
  and control systems
• State-of-the-art air emission control technology,
  including NOx combustion design and add-on
  emission controls to reduce airborne emissions

3
Proposed St. Charles Project (continued)

• Water Needs
• The St. Charles facility will require, on
  average, 2.3 MGD of water for process cooling.
  CPV Maryland has proposed two facility cooling
  options
• Wet cooling utilizing reclaimed wastewater from
  the Mattawoman Wastewater Treatment Plant, or
• Dry cooling air-cooled condensers
• CPV Maryland will also use raw water (i.e.
  potable drinking water) from the county water
  system. The plant will require approximately 0.14
  MGD, on average, of raw water for
• Potable water supply
• Service water system makeup
• CT inlet air evaporative cooler makeup
• Supply to the plant cycle makeup demineralizer
  system for the steam generator

4
Proposed St. Charles Project (continued)

• Biological Impacts
• Proposed linear facilities will include reclaimed
  water (13.9 miles) and natural gas (1.3 miles)
  pipelines. Biological impacts are minimized as
  the preferred pipeline routes are almost entirely
  within or adjacent to existing cleared and
  maintained ROWs and Charles County easements
• Sensitive resources will be protected. A buffer
  will be maintained around the Piney Branch Bog
  and associated stream/wetlands to minimize
  impacts to this sensitive habitat

5
St. Charles Project Status -(PSC Case 9129)

• CPV Maryland, LLC filed its CPCN application with
  the Public Service Commission on December 14,
  2007 and testimony on February 12, 2008.
• Evidentiary hearing to cross-examine the
  applicant was held March 4, 2008, followed by the
  evening public hearing.
• The State completed its comprehensive review of
  the project and filed its testimony on July 14,
  2008.
• The State recommended that the proposed St.
  Charles site is suitable and that the plant can
  be constructed and operated in accordance with
  all applicable environmental regulations provided
  that the certificate incorporates the 77 initial
  recommended licensing conditions.
• A June 25, 2008 hearing provided the opportunity
  to cross-examine the States witnesses and
  supplemental testimony provided by the applicant.
• The case is currently under review by the PSC
  Hearing Examiner.