Mobley Engineering

To date, Mobley Engineering has installed over 338,000 feet of line diffuser:

• 22 Hydropower Reservoirs
• 29 Water Supply Reservoirs
• 2 Natural Lakes
• 1 Nuclear Plant Intake Embayment
• 5 Upwelling Diffuser Systems

Buzzard Roost Hydroelectric Station
(TVA 1997, Mobley Engineering 2012, 2013)

• Duke Power Company
• Greenwood, South Carolina
• 3 diffuser lines, 9,000 feet total
• 22-tons/day oxygen system capacity

Lake Tillery
(Mobley Engineering 2011)

• Progress Energy
• Mount Gilead, North Carolina
• Enhance hydro release DO to FERC requirements
• 4 diffuser lines, 14,000 feet total
• 150-tons/day oxygen capacity

J. Strom Thurmond Reservoir
(Mobley Engineering 2010-2011)

• US Army Corps of Engineers, Savannah District
• Modoc, South Carolina
• To create and maintain striped bass fish habitat
• 9 diffuser lines, 11,880 feet total
• 200-tons/day oxygen capacity

Gulf Island Pond
(Mobley Engineering 2009-2010)

• FPL Energy, Gulf Island Pond Operating Partnership
• Lewiston, Maine
• 6 diffuser lines, 10,400 feet total
• 50-tons/day oxygen capacity

Lake Lillinonah, Shepaug Dam
(Mobley Engineering 2006)

Lake Wallenpaupack Reservoir
(Mobley Engineering 2004, 2012)

• Pennsylvania Power and Light
• Hawley, Pennsylvania
• DO Enhancement of Hydropower Releases
• To remove hydrogen sulfide and improve water quality
• 1 diffuser line, 3,000 feet total
• Compressed air, 200-scfm air capacity
  

Richard B Russell Reservoir
(Mobley Engineering, TVA 2002)

• US Army Corps of Engineers, Savannah District
• Calhoun Falls, South Carolina & Elberton, Georgia
• DO Enhancement of Hydropower Releases
• 10 diffuser lines, 42,000 feet total
• 20,500 feet of supply lines
• 200-tons/day oxygen delivery capacity

Mio Hydroelectric Plant
(Mobley Engineering 2008)

• Consumers Energy
• Mio, Michigan
• Two 25 foot diameter upwelling diffusers
• Supplied by portable air compressor
• Enhance turbine release temperatures for downstream fish habitat

• Consumers Energy
• Newago, Michigan
• Two 25 foot diameter upwelling diffusers
• Supplied by portable air compressor
• Enhance turbine release temperatures for downstream fish habitat

Hodenpyl Hydroelectric Plant
(Mobley Engineering 2007)

• Consumers Energy
• Mesick, Michigan
• Two 15 foot diameter upwelling diffusers
• Supplied by portable air compressor
• Enhance turbine release temperatures for downstream fish habitat

Broken Bow Dam
(Mobley Engineering 2007)

• Oklahoma Department of Wildlife Conservation
• Broken Bow, Oklahoma
• Three 15 foot diameter upwelling diffusers
• Supplied by portable air compressors
• Experimental attempt at enhancing turbine release temperatures for downstream fish habitat

• Commerce City, Colorado 
• Four destratification/aeration diffuser lines, built and installed in four separate reservoirs which were developed from previoulsy mined gravel pits

• Spotsylvania County Utilities
• Spotsylvania Courthouse, Virginia 
• One 4,660 foot destratification/aeration diffuser line, with 880 feet of supply, and one 4,680 foot destratification/aeration diffuser line with 4,280 feet of supply
• Has a surface area of 417 acres

• Aurora Water
• Aurora, Colorado 
• One 2,300 foot diffuser line, with 920 feet of supply
• Has a surface area of 820 acres

• Casitas Municipal Water District
• Ventura, California 
• 3 diffuser lines, with a total of 5,400 feet of diffuser, and 3,980 feet of supply
• Has a surface area of 1,100 acres

• Barberton Utilities
• Norton, Ohio
• Side stream super-saturation system
• 200 acre lake

• Pasco County Master Reuse System (PCMRS)
• Wesley Chapel, Florida
• Reclaimed Water Reservoir
• 500 million-gallon reservoir
• 3 Diffuser lines

C.W. Young Reservoir
(Mobley Engineering 2014)

• Tampa Bay Water Authority
• Lithia, Florida
• 3 diffuser lines
• Supply to 7 aeration towers
  

Almaden Reservoir
(Mobley Engineering 2014)

• Santa Clara Valley Water District
• Santa Clara County, California
• To eliminate methylmercury
  

• Saint Paul Regional Water Services
• Saint Paul, Minnesota
• 1.71 square miles of water
• 3 diffuser lines

• Santa Clara Valley Water District
• San Jose, California
• 3,415 acre-feet
• Two lines, 2,000 feet total
• 12-scfm/day oxygen delivery capacity (675kg/day)
• To eliminate methylmercury

• Fairfax Water Authority
• Fairfax, Virginia
• 39,700 acre-feet (49GL)
• 1 diffuser line, 2,600 feet total
• 54-scfm/day oxygen delivery capacity (3,000 kg/day)

• Santa Clara Valley Water District
• San Jose, California
• 7,500 acre-feet (9.3GL)
• 1 diffuser line, 1,000 feet total
• 12-scfm/day oxygen delivery capacity (675 kg/day)
• To eliminate methylmercury

Vadnais Lake
(Mobley Engineering 2011)

• Saint Paul Regional Water Services
• Saint Paul, Minnesota
• 9,000 acre-feet (11GL)
• 2 diffuser lines, 3,000 feet total
• 120-scfm/day oxygen deliver capacity (5,500 kg/day)

• Peace River Manasota Regional Water Authority
• Port Charlotte, Florida
• 6 billion gallons (22GL)
• 4 diffuser lines, 12,240 feet total
• 750-scfm air delivery capacity

San Antonio Reservoir
(Mobley Engineering 2009)

• San Francisco Public Utility Commission
• San Francisco, California
• 55,000 acre-feet (68GL)
• 2 diffuser lines, 3,780 feet total
• 9-tons/day oxygen delivery capacity

Crystal Reservoir
(Mobley Engineering 2009)

• City of Cheyenne Board of Public Utilities
• Cheyenne, Wyoming
• 3,988 acre-feet (68GL)
• 2 diffuser lines, 1,200 feet total
• 7-ton/day oxygen delivery capacity

Peace River Reservoir #1
(Mobley Engineering 2008)

• Peace River Manasota Regional Water Authority
• Port Charlotte, Florida
• 625,000,000 gallons (2.3GL)
• 2 diffuser lines, 3,630 feet total
• 200-scfm air delivery capacity

Calaveras Reservoir
(Mobley Engineering 2005)

• San Francisco Public Utility Commission
• San Fransicso, California
• 860 acres, 34,000 acre feet (42GL)
• 2 diffuser lines, 2,000 feet total
• 4-tons/day oxygen  delivery capacity

Carvin Cove Reservoir
(Mobley Engineering 2005)

• Western  Virginia Water Authority
• Roanoke, Virginia
• 2 diffuser lines, 4,000 feet total
• 4 tons/day oxygen delivery capacity

Upper San Leandro Reservoir
(Mobley Engineering 2001)

• East Bay Municipal Utility District
• Oakland, California
• 750 acres, 36,000 acre feet (44GL)
• 2 diffuser lines, 4,800 feet total
• 9 tons/day oxygen delivery capacity

Los Vaqueros Reservoir
(Mobley Engineering 2000)

• Contra Costa Water District
• Concord, California
• 2 diffuser lines, 8,000 feet total
• 14 tons/day oxygen delivery capacity

Spring Hollow Reservoir
(TVA 1997, Mobley Engineering 2004)

• County of Roanoke Utility District
• Salem, Virginia
• 1 diffuser, 3,500 feet total
• 120 to 170-scfm air capacity
• Modified to 1 diffuser, 2,000 feet total, utilizing oxygen (2004)
• 1.2 tons/day average oxygen delivery capacity

J. Strom Thurmond Reservoir
(Mobley Engineering 2010-2011)

• US Army Corps of Engineers, Savannah District
• Modoc, South Carolina
• To create and maintain striped bass fish habitat
• 9 diffuser lines, 11,880 feet total
• 200-tons/day oxygen capacity

South Twin Lake
(Mobley Engineering 2010)

• Colville Consolidated Tribes Indian Reservation
• Inchelium, Washington
• 30,000 acre feet
• 1 diffuser line, 3,920 feet total
• 5 tons/day oxygen delivery capacity
• Enhance fish habitat during summer stratification period

North Twin Lake
(Mobley Engineering 2008)

• Colville Consolidated Tribes Indian Reservation
• Inchelium, Washington
• 917 acres, 29,600 acre feet
• 1 diffuser line, 2,450 feet total
• 5 tons/day oxygen delivery capacity
• Enhance fish habitat during summer stratification period

South Twin Lake
(Mobley Engineering 2010)

• Colville Consolidated Tribes Indian Reservation
• Inchelium, Washington
• 30,000 acre feet
• 1 diffuser line, 3,920 feet total
• 5 tons/day oxygen delivery capacity
• Enhance fish habitat during summer stratification period

North Twin Lake
(Mobley Engineering 2008)

• Colville Consolidated Tribes Indian Reservation
• Inchelium, Washington
• 917 acres, 29,600 acre feet
• 1 diffuser line, 2,450 feet total
• 5 tons/day oxygen delivery capacity
• Enhance fish habitat during summer stratification period

Tims Ford Reservoir
(TVA 2005)

• TVA Lake Improvement II
• Winchester, Tennessee
• 12,400 acres; 600,000 acre-feet
• 4 diffuser lines, 15,500 feet total

Norris Reservoir
(TVA 2004)

• TVA Lake Improvement II
• Norris, Tennessee
• 34,000 acres; 2,500,000
• 3 diffuser lines, 12,000 feet total

Nottely Reservoir
(TVA 2004)

• TVA Improvement Plan II
• Union County, Georgia
• 4,000 acres; 174,000 acre-feet
• 2 diffuser lines, 8,000 feet total

Buzzard Roost Hydroelectric Station
(TVA 1997, Mobley Engineering 2012, 2013)

• Duke Power Company
• Greenwood, South Carolina
• 3 diffuser lines, 9,000 feet total
• 22-tons/day oxygen system capacity

Watts Bar Reservoir
(TVA 1996, 2003)

• TVA Lake Improvement Plan
• Kingston, Tennessee
• 39,000 acres; 1,175,000 acre-feet
• 6 diffuser lines, 44,000 feet total
• 50 tons/day oxygen system capacity

Embalse de Pinilla
(Centro de Estudios Hidrograficos and TVA 1995)

• Ministerio de Obras Publicas, Transportes y Medio, Ambiente Ambiente
• Madrid, Spain
• 2 lines, 670 meters total
• 1,600-kg/day oxygen system capacity

Hiwassee Reservoir
(TVA 1995)

• TVA Lake Improvement Plan
• Cherokee County, North Carolina
• 6,000 acres; 430,000 acre-feet
• 15-ton per day pressure swing absorption system (1997)
• 3 diffuser lines, 12,600 feet total
• PSA system replaced with LOx tank and vaporizers in 1999

Sequoyah Nuclear Plant
(TVA 1995)

• TVA Nuclear - Environmental Compliance
• Hamilton County, Tennessee
• One 1,500 foot long diffuser
• Supplied by portable compressed air
• Fish habitat maintained in intake channel

Fort Loudon Reservoir
(TVA 1995, 2004)

• TVA Lake Improvement Plan
• Knoxville, Tennessee
• 14,000 acres; 393,000 acre-feet
• 3 diffuser lines,15,000 feet total
• 36-tons/day oxygen system

Blue Ridge Reservoir
(TVA 1994, 2003)

• TVA Lake Improvement Plan
• Blue Ridge, Georgia
• 3,200 acres; 195,000 acre-feet
• 5 diffuser lines, 8,450 feet total
• 24-tons/day oxygen system capacity

Normandy Reservoir
(TVA 1994 - 1996)

• TVA Reservoir Releases Task Force
• Normandy, Tennessee
• 6 diffuser lines, 16,500 feet total
• 250-scfm air system capacity

Cherokee Reservoir
(TVA 1994 - 1995)

• TVA Lake Improvement Plan
• Jefferson City, Tennessee
• 30,000 acres; 1,500,000 acre-feet
• 16 diffuser lines, 48,000 feet total
• 150-tons/day oxygen system capacity

Douglas Reservoir
(TVA 1993, 1995, 1996, 2003)

• TVA Lake Improvement Plan
• Dandridge, Tennessee
• 30,000 acres; 1,476,000 acre-feet
• 10 diffuser lines, 35,000 feet total
• 110-tons/day oxygen system capacity