Timeline Of Projects
Current Projects
Harry S. Truman ProjectLocation: Warsaw, MODuration: Ongoing Amount: Owner: Engineer: |
 |
Hudson Ranch 1 Geothermal ProjectLocation: Calipatria, CADuration: 10/10 - Ongoing (02/11 Anticipated) Amount: $4,023,234 Owner: Hudson Ranch 1 Power, LLC Engineer: AMEC E&C Services, Inc. The Hudson Ranch I project is a 49.9 megawatt (MW) Geothermal power generating facility under development within the Salton Sea known resource area in the Imperial County city of Calipatria, California. ASI Constructors, Inc. is the structural concrete contractor of the record for this project. ASI is providing construction services involving the erection of the major foundations on this project including a turbine-generator structure, cooling tower, wellhead separators, crystallizers, water tanks, primary and secondary clarifier tanks, pipeline supports, and various ancillary structures. Raw water ponds and perimeter flood protection embankments are planned to be constructed at the perimeters of the proposed geothermal plant site. The project will utilize state of the art flash steam technology and will be operational in 2012. |
 |
Lake Rush Dam ModificationsLocation: Wichita Mountains Wildlife Refuge, Lawton, OKDuration: 10/10 - Ongoing (02/11 Anticipated) Amount: $3,193,517 Owner: USFWS Dam Safety Office Engineer: Gregg Batchelder Adams, URS Group, Inc. Rush Lake Dam is located in Comanche County, Oklahoma. The work at Lake Rush consisted of excavating 1751 CY, Outlet works extension 28.9 LF, Conventional concrete approx. 800 CY, Handrail/Fence/Security Gate 350 LF, Upstream and Downstream Gates 1 EA, RCC 4584 CY installing and removing temporary erosion control measures; furnishing and installing a new downstream guard gate on the downstream face of the dam; placing and removing a temporary cofferdam and diversion pipe and valve to provide protection from reservoir inflows in order to install a new upstream slide gate and to place an RCC buttress; demolishing and removing an existing outlet works slide gate and gate operator; demolishing and removing existing handrail posts, cable and ladder rungs on the spillway; demolishing and removing existing outlet works operator concrete platform; sealing vertical and horizontal joints on the upstream face of the dam; furnishing and constructing a roller compacted concrete test section; furnishing and placing roller compacted concrete, structural concrete, and anchors for a buttress adjacent to the upstream face of the dam; furnishing and installing contraction joints in the RCC buttress; furnishing and placing concrete for erosion protection at the downstream toe of the dam, for the new downstream guard gate operator platform and for the new upstream gate operator platform; furnishing and installing new upstream outlet works pipe, slide gate, thimble, operator, and vent pipe; furnishing and installing new handrails and anti-climb fence on the dam; furnishing and installing new dam instrumentation; excavating and treating foundation shear zones; reclaiming disturbed areas; and other items including clearing, dewatering, unclassified excavation, rock excavation, and stripping and stockpiling topsoil. |
 |
Big HaynesLocation: Grayson, GADuration: 09/10 - Ongoing (02/11 Anticipated) Amount: $1,774,880 Owner: Gwinnett County Dept. Of Water Engineer: Gregg Hudock, P.E. - Golder Assoc. Inc. Big Haynes Dam Structure # 3 is a flood protection dam which required modifications to bring the structure up-to-date with current regulations. The modifications consist of clearing and grubbing of the site, installation of erosion and sediment control measures, soil excavation on the downstream slope of the existing earth fill dam and at the location of a new stilling basin, construction of a Roller Compacted Concrete (RCC) spillway overtopping protection for the dam, installation of a granular underdrain system beneath the RCC, modifications to the existing underdrain system and principal spillway piping, dewatering, temporary diversion of flows from the principal spillway, placement of fill in spillway (Auxilliary Spillway) using excavated materials from the dam excavation and regrading, landscaping and grassing areas disturbed by construction. |
 |
Pathfinder DamLocation: Natrona County, WYDuration: 09/10 - Ongoing (11/11 Anticipated) Amount: $2,672,650 Owner: U.S. Dept. Of The Interior, Bureau Of Reclamation Engineer: Gregory G. Glunz, PE, URS Corporation The Pathfinder Dam is located on the North Platte River approximately 47 miles southwest of Casper, Wyoming. The dam is a cyclopean dam, which was originally constructed between 1905 and 1909; it is included on the National Register of Historic Places. The Pathfinder Reservoir provides water storage for 226,000 acres of irrigation in Wyoming and Nebraska. The dam has a total length of 432-feet and a height of 218-feet above lowest foundation. The canyon here is approximately 90-feet wide at the bottom and 200-feet wide at the top. The Pathfinder Dam Spillway Modifications will be located on the left abutment of the existing Pathfinder Dam. The new ogee crested spillway modification will consist of the following primary features described hereafter including the Ogee Crested Spillway, Rock Excavation and a Walkway Extension. The ogee crested spillway will be a reinforced concrete structure approximately 800-feet long, located on an excavated bench upstream of the existing flat crested weir. The ogee crested spillway will be anchored to a granite bedrock foundation exposed by excavation. A portion of the proposed ogee crested spillway will be constructed over the footprint of the existing flat crested weir. At these locations, the ogee crested spillway will be anchored to the existing weir. Approximately 7,700 cubic yards (cy) of the granite outcropping will be blasted and excavated just downstream from the existing flat crested weir. In addition to the downstream excavation, approximately 2,540 cy of granite bedrock will excavated on the left abutment of the proposed ogee crested spillway. The two areas it will be excavated by drilling and blasting methods through the granite rock formations. The rock removed will be disposed of at a location approximately 1/2 mile from the spillway area. The existing walkway is to be extended to the location at which the existing walkway extended at the same elevation and the rock excavation intersects (approx. 70 feet). The walkway extension will be similar to the original design of the walkway when it was first constructed. The walkway will be embedded in concrete placed in excavations into the bedrock. The walkway platform will be constructed of wood planks. |
 |
Wide Hollow Water Supply Storage FacilityLocation: Escalante, UTDuration: 03/10 - Ongoing (12/10 Anticipated) Amount: $8,400,000 Owner: New Escalante Irrigation Company Engineer: Franson Civil Engineers, Inc. The Wide Hollow Water Supply Storage Facility work includes removing the existing embankment and foundation materials, then reconstructing the foundation and embankment to a higher elevation that will restore the structure's original storage capacity. Significant features of the construction include site preparation and restoration, removal of the existing embankment and foundation, construction of a new embankment, installation of outlet works, construction of spillways, construction of features at the Escalante Petrified Forest State Park to address impacts from the raised water level and mitigation efforts to compensate for loss of wetland and riparian habitats. |
 |
Cotter Dam Enlargement ProjectLocation: Canberra, Australia (ACT)Duration: 01/10 - Ongoing Amount: $362,000,000 AUD Owner: Bulk Water Alliance Engineer: Alliance, Abigroup Contractors Pty. Ltd., John Holland Pty. Ltd. The Cotter Dam Enlargement Project involves the design and construction of a new 260 foot high RCC dam approximately 1,000 feet down-stream of the existing 100 foot high Cotter Dam. The new dam will be a concrete gravity dam with a grout enriched RCC face. Flood flows will be passed over the dam through principal and auxiliary spillways. Because of the hot and arid conditions in the region, strict temperature controls are being implemented for the concrete to reduce cracking of the concrete during the curing process. Construction of the dam will begin in early 2011 and is expected to be completed by early 2012. Project is a design build alliance between owner, engineer and contractor. ASI is a sub alliance participant. |
 |
Wyaralong DamLocation: Beaudesert, Queensland, AustraliaDuration: 10/09 - Ongoing (02/11 Anticipated) Amount: $140,000,000 AUD Owner: Queensland Water Infrastructure Engineer: The Wyaralong Dam will be built by mid 2011, and will provide an extra 17,000 acre-feet of water every year. The dam is expected to be 1,600 ft in length and 157 ft high. The Alliance (Wyaralong Dam Alliance) is comprised of a team of highly skilled professionals consisting of leading construction, design and infrastructure specialists with collective individual experience on hundreds of dams. The works package includes the construction of a roller compacted concrete dam, which will be built across the river channel and designed to pass flood flows over a centrally placed spillway within the embankment itself. The dam will be designed to withstand full flood and earthquake loading in accordance with the Queensland Dam Safety Management Guidelines and the Australian National Committee on Large Dams (ANCOLD) Guidelines. |
 |
Dog River Dam Emergency RepairsLocation: Douglasville, GADuration: 10/09 - Ongoing Amount: $1,300,000 Owner: Douglasville - Douglas County Water And Sewage Authority Engineer: Schnabel Engineering, Inc. Douglasville, GA received nearly 18” of continuous rainfall within a 24 hour period on September 20-21, 2009. There was a lot of flood damage in the area. ASI mobilized immediately and provided labor, equipment, materials, and supervision to make the emergency repairs. At the labyrinth, ASI had to repair 2-60” diameter sluice gates, all hand rail for the access platforms to the gates had to be fabricated and reinstalled, the log boom had to be fabricated and installed. The entire earthen portion of the downstream side of the dam had to be cleaned up and reshaped. A temporary inspection dam had to be installed to evaluate the damage to the spillway. The dam consisted of 4,800 tons of rip rap with a heavy plastic liner to keep back flow from the Chattahoochee river out of the inspection area. Inspections are ongoing but it appears the wing walls as well as several chute blocks will need repair. The saddle dike area was severely damaged when water overtopped the concrete parapet wall. 3500 cubic yard of saturated dirt had to be removed and replaced with imported fill. All instrumentation for the piezometers had to be inspected and repaired. The sand filter drain had to be removed and replaced. The Douglasville Recreation Area required a new dock, silt removal from the intake, rebuild of a air release valve, and lots of clean up for all areas affected by the flood. |
 |
2010
Taum Sauk Plant - Upper Reservoir Reconstruction ProjectLocation: Annapolis, MODuration: 01/07 - 04/10 Amount: Confidential Owner: Ameren UE Engineer: Paul C. Rizzo Associates, Inc. Joint Venture with Fred Weber Inc. Project consists of returning an existing AmerenUE Pumped Storage Generation Facility to working condition after the Upper Reservoir suffered a breach in the existing concrete faced rockfill dam. The facility falls under the jurisdiction of the Federal Energy Regulatory Commission (FERC) and the project is being constructed to satisfy requirements imposed by FERC for a return to service. |
 |
Catawba Dam Embankment Seismic Stability ImprovementsLocation: Nebo, NCDuration: 11/08 - 04/10 Amount: $13,600,000 Owner: Duke Energy Corporation Engineer: Devine Tarbell The Catawba Dam Embankment Seismic Stability Improvements (ESSI) is a component of the Bridgewater Hydroelectric Development which was constructed close to 100 years ago. The facility falls under the Federal Energy Regulatory Commission and the project is being constructed to satisfy requirement imposed by FERC in order to return to service. |
 |
Deep Creek Watershed Dam 5DLocation: Yadkin County, NCDuration: 02/09 - 02/10 Amount: $7,688,393 Owner: Yadkin County, NC Engineer: Schnabel Engineering, Inc. The Deep Creek Watershed Dam 5D Project entails the construction of a composite earth section, consisting of RCC and structural concrete. The finished dam will have a maximum height of approximately 72 feet and a total length of approximately 1,490 feet. Additional features will include several things such as a reinforced concrete principal spillway riser with a 60-inch diameter ductile ironpipe outlet conduit. The 300-foot long auxiliary overflow spillway (over the RCC section of dam) is enclosed with 16 foot high structural concrete training walls. Also, the reinforced concrete stilling basin included 63 each roller bucket energy dissipaters. |
 |
2009
Dog River Dam ModificationsLocation: Douglasville, GADuration: 05/08 - 05/09 Amount: $11,400,000 Owner: Douglasville - Douglas County Water and Sewer Authority Engineer: Schnable Engineering The project consists of raising the existing dam an additional 10 ft to increase water storage capacity in the reservoir. |
 |
Bear Creek Dam Rehabilitation ProjectLocation: Hodges, ALDuration: 10/08 - 06/09 Amount: $9,986,724 Owner: TVA - Tennessee Valley Authority Engineer: Rizzo Engineering The Bear Creek Rehabilitation Project involves construction of an RCC Berm. ASI is responsible for providing all labor, equipment, materials, and construction supervision. ASI is also responsible for procurement of all permanent materials,equipment, and construction consumables; and also the coordination, planning, supervision and management of subcontractors. ASI transported and utilized owner (TVA) supplied fly ash from the Colbert and Cumberland Fossil Plants. |
 |
2008
United States Air Force Academy Repair Non-Potable Reservoir No. 2 DamLocation: USAFA Colorado Springs, CODuration: 02/08 - 07/08 Amount: $3,700,000 Owner: United States Air Force Academy Engineer: Weston Solutions Inc. Contract to excavate and remove existing dam outlet works, replace outlet works, replace embankment, replace inlet tower and inlet works and line reservoir with approx 16,000 cy of soil cement. |
 |
Modifications To Dams Y-15 And Y-16 Yellow River WatershedLocation: Lawrenceville, GADuration: 07/07 - 07/08 Amount: $6,100,000 Owner: Gwinnett County Georgia Engineer: Schnabel Engineering South Rehabilitation of two NRCS dams in the Yellow River Watershed. Work included dewatering and diversion of existing flows through the dams, dam excavation, RCC overtopping protection, CIP outlet works modifications and RCC backfilled upon completion of RCC. |
 |
Big Lake Dam - Repair/Alter Storm Water System Phase IILocation: Dobbins Air Force Base, GADuration: 01/08 - 04/08 Amount: $1,100,000 Owner: Dobbins AFB Engineer: Mactec Engineering & Consulting The existing dam was built in 1906, and over time, water has undermined the stability of the structure. The project included the rehabilitation of an existing dam. |
 |
2007
North Fork Reservoir RehabilitationLocation: Chafee County, CODuration: 07/06 - 10/07 Amount: $535,000 Owner: Upper Arkansas Water Conservancy District Engineer: Boyle Engineering Corporation Rehabilitation of an embankment dam, outlet works, and emergency spillway located at 11,400' elevation. The project required slip-lining of 24" outlet conduit with steel liner pipe, construction of reinforced concrete intake and outlet structures, installation of 24" hydraulic slide gate, emergency spillway enlargement, embankment modification, and toe drain construction. |
 |
Genesee Dam #2Location: Kittredge, CODuration: 06/06 - 07/07 Amount: $6,300,000 Owner: Genesee Water & Sanitation District Engineer: WW Wheeler Associates Construction of a new 95 ft tall x 550 ft long RCC gravity dam with principal riser spillway and outlet conduit and appurtenant structures. |
 |
North Central Montana Intake At Tiber ReservoirLocation: Chester, MTDuration: 09/06 - 07/07 Amount: $1,750,000 Owner: Chippewa Cree Tribe Engineer: KHM Engineers Excavation and construction of a 28 ft diameter x 75 ft deep intake shaft via mechanical methods & installation of 24 ft finished diameter reinforced concrete shaft liner, installed via contractor designed caisson method. Scope also includes marine work supporting MTBM intake tunnel operations. |
 |
Hickory Log Creek DamLocation: Canton, GADuration: 10/06 - 06/07 Amount: $6,357,650 Owner: Cobb County-Marietta Water Authority Engineer: Schnabel Engineering South Construction of a 180 ft tall x 1,050 ft long RCC gravity dam with integral converging stepped-chute spillway. Project is the tallest non-federal dam in Georgia and the largest RCC dam constructed in the Southeast. |
 |
Sandia Mountain Trubutaries Watershed Site 1 - Piedra Liza DamLocation: Bernalillo, NMDuration: 10/06 - 05/07 Amount: $850,000 Owner: USDA-NRCS NM State Office Engineer: USDA-NRCS NM State Office Construction of an RCC overtopping protection of an existing earthen embankment. |
 |
2006
Dry Creek Reservoir EnlargementLocation: Berthoud, CODuration: 04/06 - 10/06 Amount: $2,800,000 Owner: Engineer: Boyle Engineering Corporation Construction of a 12,500 CY RCC stepped chute emergency spillway with two cycle labyrinth weir control structures built as a monolith in an 65 ft x 8500 ft earthfill embankment. |
 |
San Juan Chama DWP Diversion Dam Intake Structure-Fish PassageLocation: Albuquerque, NMDuration: 01/05 - 06/06 Amount: $17,650,000 Owner: City Of Albuquerque, NM Engineer: URS Corporation Construction of a new diversion dam. The intake structure fish passage structure is in the main channel of the Rio Grande River. Construction required phased river diversion cofferdams, dredging of river, dewatering and foundation prep, installation of sheet pile foundation cutoff walls, structure construction, installation of structural steel and misc mechanical equipment, electrical distribution and controls. |
 |
Pine Brook Dam And ReservoirLocation: Boulder, CODuration: 07/05 - 04/06 Amount: $4,450,000 Owner: Pine Brook Water District Engineer: Construciton of a new dam and reservoir that included the construction of outlet works tunnel valves, stainless steel pipes, and placement of an earthen embankment and reclaim site. |
 |
Upper Stillwater Dam Rehabilitation Phase ILocation: Duchesne, UTDuration: 09/03 - 03/06 Amount: $9,250,000 Owner: US Bureau of Reclamation Engineer: US Bureau of Reclamation The project involved remediation of seepage through an existing 230 ft high RCC dam via polyurethane injection grouting, drain hole drilling and installation of a contractor designed, proprietary interior membrane system. The Project included concrete parapet wall removal and replacement, new concrete entrance canopy, temporary spillway crossing bridge, and a temporary gallery access ventilation system. |
 |
Franklin Dam ReplacementLocation: Franklin, KYDuration: 03/05 - 11/05 Amount: $4,850,000 Owner: City of Franklin, KY Engineer: Camp Dresser & McKee, Inc. Construction of a new RCC gravity replacement dam. The project required phased river diversion partial demolition of existing rock-filled gabion dam, and construction of a new 475 ft long, 24 ft high RCC gravity dam and reinforced concrete ogee spillway and stilling basin. |
 |
Indiana Army Munitions Plant (INAAP) Process Waste Settling Basin Dam RehabilitationLocation: Charlestown, INDuration: 07/05 - 01/06 Amount: $1,910,000 Owner: US Army Corps Of Engineers, Louisville District Engineer: URS Corporation The project consisted of replacing an existing structure, diverting water and dewatering the existing dam, building an access road and diversion control, placement of mass concrete and structural concrete, and placement of a sheetpile wall and other sitework. |
 |
2005
Marrowbone Creek #1 Dam RehabilitationLocation: Henry County, VADuration: 03/05 - 11/05 Amount: $2,585,000 Owner: USDA-NRCS Engineer: Schnabel Engineering Construction of an RCC embankment armoring/emergency spillway on a 60 ft tall watershed embankment dam. The project required embankment excavation, construction of foundaton drainage system, construction of RCC spillway, placement of embankment and riprap, modification of existing outlet works, construction of sheet piling and renforced concrete sills and walls, foundation dewatering and misc sitework. |
 |
Little Puerco Wash Flood ProtectionLocation: Gallup, NM |
 |
Loch Raven Dam RehabilitationLocation: Baltimore, MD |
 |
Yellow River Dam Y-17Location: Gwinnett County, GADuration: 09/04 - 03/05 Amount: $1,927,000 Owner: Gwinnett County, GA Engineer: NRCS The project consisted of the construction of an RCC embankment armoring/emergency of embankment dam. The project required embankment excavation, construction foundation drainage system, construction of RCC spillway, placement of embankment and riprap, modification of existing outlet works, construction of reinforced concrete sills & walls, foundation dewatering; and misc site work. |
 |
Piute Dam Rehabilitation Phases II & IIILocation: Piute County, UTDuration: 09/04 - 02/05 Amount: $4,250,000 Owner: Piute Reservoir & Irrigation Company Engineer: Franson Noble Engineering Rehabilitation of a 1910 era embankment dam. The Project Included excavation of existing downstream embankment, construction of a new toe drain system including temporary sheet pile support wall, construcion of a bio-polymer trench drain system and discharge piping, placement of zoned embankment on downstream face of dam, construction of new fuse-plug spillway including excavation, construction of sheet pile cutoff wall, construction of reinforced concrete spillway structure and zoned fuse plug embankments. The project required construction within 100 day schedule. |
 |
2004
Standley Lake Dam RehabilitationLocation: Westminster, CODuration: 07/02 - 09/04 Amount: $32,510,700 Owner: City Of Westminster Engineer: Joseph A. Cesare & Associates Excavation of spillway channel and construction of embankment stability berm. Twin 72-inch diameter microtunnel wet taps of the existing reservoir (drives of about 650 ft and 1,220 ft at depths of about 50 ft to 80 ft below water surface). Construction of two underwater intakes to 110-ft-depth; a 35 ft diameter reinforced concrete valve shaft 100-ft-deep; 1,000 LF of 11.5 ft diameter conventional tunnel with 102-inches diameter steel conduit; 2,750 LF of buried 102-inch steel conduit liner, 720 LF of buried 84-inch steel conduit; stream release facilities; new valve house; new spillway with concrete labyrinth weir in 8 drop structures; existing outlet works abandonment; and stability berm on downstream face of existing earth dam. |
 |
Tom Miller Dam Modernization ProjectLocation: Austin, TXDuration: 03/03 - 09/04 Amount: $10,450,000 Owner: Lower Colorado River Authority Engineer: Freese Nichols Stability modifications to a concrete dam and spillway constructed in 1911. Installation of 55 post-tensioned tendon anchors in spillway crest and dam abutment in-water. Installation of 207 40-ft-long stitch anchors in a 30-ft-deep stilling basin. Demolition and reconstruction of concrete in the downstream deck slabs of five gate bays. Placement of mass fill tremie concrete in the hollow core sections of the dam and structural concrete fill in upper hollow section of the dam. All access upstream and downstream via barges. |
 |
Salado Creek Watershed Dam 15R Phase IILocation: San Antonio, TXDuration: 06/03 - 08/04 Amount: $4,705,840 Owner: San Antonio River Authority Engineer: San Antonio River Authority Project involved the completion of second phase of a flood control embankment dam structure with principal spillway, drawdown structure, and RCC emergency spillway. Included excavation of dam foundation to limestone bedrock subgrade; foundation cleanup; construction of zoned earthfill embankment, RCC emergency spillway, reinforced concrete principal spillway riser and outlet conduit; installation of 30-inch drawdown conduit; and relocation of 30 ft sanitary sewer. Height is 773 ft with a crest length of 2600 ft. |
 |
Bluestone Lake Dam Safety Assurance Phase ILocation: Hinton, WVDuration: 11/00 - 04/04 Amount: $20,410,575 Owner: US Army Corps Of Engineers Engineer: US Army Cops Of Engineers Dam safety rehabilitation project on an existing dam 155-ft-high, with a crest length of 1,980 ft. Included the fabrication and installation of six 18-ft-diameter outlet penstock extensions, new bulkhead gates 21 ft square, hydraulic operating system, and placement of reinforced mass concrete thrust blocks. 3-inch aggregate concrete provided in an on-site plant with aggregate rewash/rescreen capability. The only access to the project was across 1,360 LF temporary panel-type bridge installed in 35-ft-deep existing stilling basin by barge mounted crane. |
 |
Medina Lake Main Dam Outlet Replacement GateLocation: Mico, TXDuration: 04/03 - 04/04 Amount: $1,437,550 Owner: Bexar Metro Water District Engineer: Hearn Engineering Inc. Project included repairs to two underwater gate operators, replacement of two gates, 100 cy concrete hydro demolition, 120 cy structural demolition, placement of 200 cy of structural concrete, access road construction and miscellaneous electrical work. |
 |
Lake Brandt Dam RehabilitationLocation: Greensboro, NCDuration: 02/03 - 03/04 Amount: $1,750,000 Owner: City Of Greensboro Engineer: Hazen & Sawyer Project consisted of structural repairs to the dam and pump station, including concrete crack and spall repair (underwater and above water), replacement of raw water intake sluice gates, structural repairs and repainting of eight 10 ft x 25 ft spillway roller gates, fence and handrail repairs, refurbishment of stop log guides at dam spillway gates, replacement of dam spillway seals, replacement of raw water intake trash racks and removable trash racks, replacement of pump station wet-well steel supports for pump suction piping, expansion joint repair, and refurbishment of gate operator supports. All gate replacement work staged from barges located in reservoir. |
 |
2003
Great Western Reservoir Dam RehabilitationLocation: Broomfield, CODuration: 12/02 - 07/03 Amount: $1,230,000 Owner: City Of Broomfield Engineer: Rocky Mountain Consultants Clearing of 18-acres for construction of a new 55,000 cy spillway and 85000 cy stability berm from onsite borrow sources, construction of a new spillway inlet and outlet structure, installation of 1300 lf of 36-inch reinforced concrete pipe and 3 precast concrete manholes, rehabilitation of 590 lf of outlet works and toe drain pipe, replacement of 3 existing outlet gates |
 |
Randleman Lake DamLocation: Randleman, NCDuration: 07/01 - 02/03 Amount: $20,540,000 Owner: Piedmont Triad Regional Water Authority Engineer: Hazen & Sawyer, P.C. New RCC and earth-fill dam, 100-ft-high with a crest length of 2,200 ft. The project included conventional concrete, on-site producing, delivering and placing of RCC and conventional concrete, supply/place 650 tons reinforcing steel, major phased river diversion, extensive dewatering, blasted rock and mass excavation, and construction of zoned earth embankments. |
 |
Clear Lake Dam ModificationLocation: Southeast Of Klamath Falls, ORDuration: 08/01 - 01/03 Amount: $6,659,500 Owner: U.S. Bureau Of Reclamation Engineer: U.S. Bureau Of Reclamation Construction of a new RCC dam and new outlet tower. Dam is 43-ft-high with a crest length of 565 ft. The dam is located directly downstream of an existing earthen dam. The project included excavation; clearing/grubbing; dewatering; rockfill and compacting backfill; furnishing and installing instrumentation, piezometers and joint meter and drain piping. Breaching of existing dam includes 42,000 CY excavation. |
 |
2002
Hunting Run DamLocation: Fredericksburg, VADuration: 05/00 - 09/02 Amount: $27,521,600 Owner: County Of Spotslyvania Engineer: Gannett Fleming, Inc. New RCC and earthfill dam, 120-ft-high with a crest length of 1,300 ft. Project included extended earth and rockfill non-overflow section; excavation of earth and rock; construction and maintenance of stream and river diversion facilities; cleanup and preparation of rock foundations; drilling and grouting for grout curtain; fabrication and installation of PVC membrane lined precast panels; placement of earth and rock fill; and construction of spillways and outlet works, including 3,100 LF of 36-inch to 60-inch intake pipeline; construction of 24 mgd river intake and pumping station. |
 |
Monument Lake Dam RenovationLocation: Monument, CODuration: 12/01 - 08/02 Amount: $3,184,200 Owner: El Paso County & Town Of Monument, CO Engineer: Boyle Engineering Co. Reconstruction of a spillway and outlet works. Included excavation of earth dam, dredging of interior reservoir area, drainage zone, toe drain, and new embankment. |
 |
Gross Dam Auxiliary Outlet Works RenovationLocation: Rollinsville, CODuration: 06/01 - 03/02 Amount: $560,750 Owner: Denver Board Of Water Commissioners Engineer: Denver Water Engineering Dam renovation project, featuring concrete demolition to construct 65-ft-long x 6 ft x 8 ft access addition to existing gallery in concrete dam, partial demolition of existing auxiliary power outlet building, removal of 42-inch outlet control valve and piping and replacement with 24-inch jet-flow valve, construction of new concrete energy dissipation structure. Work was located midway down a steep left abutment on 340-ft-high concrete gravity dam, in pristine mountain canyon environment. |
 |
Willamette Temperature Control Diversion Tunnel & Gate At Cougar DamLocation: Blue River, ORDuration: 07/00 - 03/02 Amount: $12,830,000 Owner: U.S. Army Corps Of Engineers Engineer: U.S. Army Corps Of Engineers Live wet lake tap. The project included machine excavation/enlargement of existing 12 ft tunnel to 16.75 ft; horseshoe x 950 ft length. Drill & blast gate chamber excavation within tunnel; mechanical excavation of 35 ft tunnel plug prior to tap required access through new gates, marine removal of underwater bulkhead and replacement with new bulkhead required mix-gas diving to 270-ft-depth and 150 ton barge mounted crane in reservoir. Placed reinforced concrete tunnel lining; installed four high pressure bonneted slide gates. |
 |
Jackson Lake Reservoir DamLocation: Fort Morgan, CODuration: 08/01 - 01/02 Amount: $3,184,200 Owner: Jackson Lake Reservoir & Irrigation Co. Engineer: W.W. Wheeler & Associates This slope protection repair project involved constructing a 6-ft-wide stepped soil cement overlay on the upstream side of an existing earth-fill dam. The existing dam is approx. 22-ft-high with a crest length of 11,600 ft. The project also involved excavation of riprap and unclassified material. |
 |
2001
Leyden Dam Flood Control ImprovementsLocation: Arvada, CODuration: 04/01 - 12/01 Amount: $1,576,500 Owner: City Of Arvada Engineer: URS Corporation Construction of a stepped RCC emergency spillway through the dam, a new drop inlet spillway, new 36-inch outlet pipe extension, manhole structure and terminal structure. Includes demolition of existing intake structure and control structure, and 100 LF of existing spillway at the upstream end, and 59 LF at the downstream end. |
 |
Modifications To Motts Run Dam And Appurtenant WorksLocation: Fredericksburg, VADuration: 11/00 - 09/01 Amount: $3,488,700 Owner: County Of Spotsylvania, VA Engineer: Gannett Fleming Rehabilitation of an existing dam outlet works including replacement of two 10-inch gates with new 24-inch gates, constructing two thrust block walls within the intake tower, rehabilitating the 36-inch low-level sluice gate, injecting chemical grout in the existing 48-inch conduit, installing HDPE conduit liner in the existing conduit, and refurbishing all misc. metals on the tower deck. Work included the excavation of the dam's toe for installation of a toe drain, along with pipe drains and a sand blanket drain on the downstream slope of the dam. |
 |
Construction Modification At Jed Johnson DamLocation: Medicine Park, OKDuration: 08/00 - 07/01 Amount: $2,367,203 Owner: U.S. Fish & Wildlife Dam Safety Division Engineer: URS Corporation The project included wire saw cutting of the existing top of the structural concrete dam; the installation of 43 post-tensioned anchors in large diameter cored holes; the replacement of 160 CY of concrete to top of dam; installation of an upstream and downstream guard gate, the construction of a moisture cutoff wall; and diver-performed installation of upstream gate and repairs to upstream surfaces. All work was performed at dam accessed and staged from barges. |
 |
Pickel Jar Dam And ReservoirLocation: Black Hawk, CODuration: 09/00 - 07/01 Amount: $1,408,200 Owner: Paradise Valley Estates Engineer: Applegate Group, Inc. Design-Build project for construction of a new 6,000 CY RCC dam, including outlet tower and gates, spillway, and appurtenant structures. Dam is 53-ft-high with a crest length of 184 ft, located at an elevation of 8,700 ft. |
 |
Syar Tunnel Control Gate And Bypass PipingLocation: Provo, UTDuration: 09/00 - 04/01 Amount: $2,609,500 Owner: U.S. Bureau Of Reclamation Engineer: U.S. Bureau Of Reclamation Work involved both ends of Syar Tunnel, which provides water deliveries from Strawberry Reservoir. Downstream work involved excavation around existing structures, removal of an 8 ft 6-inch diameter steel pipe, fabrication and installation of a control gate, control house and controls, service road and yard. Upstream work involved 1,700 LF of new 20-inch stainless bypass piping and connection to existing pipes. Work included penetration drilling through reinforced concrete and rock placement of piping and backfill grouting inside tunnel, bypass piping installed in the crown of the tunnel, with work accessed 6 miles within existing 8.5 ft Syar Tunnel and the Strawberry Inlet Gate Chamber area. |
 |
Wesley Seale Dam Spillway RehabilitationLocation: Corpus Christi, TXDuration: 07/99 - 04/01 Amount: $18,193,990 Owner: City Of Corpus Christi Engineer: Freese & Nichols The project consisted of on-site producing, delivering, and placing of mass concrete and conventional reinforced concrete to stabilize the existing dam structure. Work involved significant river diversion, cofferdam construction, extensive dewatering, and 700 drilled wells to relieve water pressure from beneath the structures. The project also included construction of subdrains, 45 multi-strand tendon anchors installed from floating plant; spillway gate rehabilitation and extensions; instrumentation; earthwork; roadwork; and a new administration building. |
 |
Unit "W" Wastewater Interceptor Reconstruction Phase 2, Schedule A.Location: Thousand Oaks, CADuration: 06/00 - 03/01 Amount: $6,415,600 Owner: City Of Thousand Oaks Engineer: Boyle Engineering Corporation Installation of 24-inch and 30-inch HDPE temporary sewer bypass pipeline down a streambed and through 1,100 LF tunnel. Blasted rock excavation, demolition, and construction of concrete encased, new Hobas pipe sewer line through a tight, urban canyon. Installation ranged in sizes from 24-inch, 30-inch, 36-inch to 48-inch with 1,100-1,200 LF "Tight Fit" liner (24-inch folded HDPE). Included two siphons, restricted lateral taps, pipe bridges, and construction of special manholes, and tie-in of 9 various sized laterals under flow conditions. Work area was located in an environmentally sensitive area. |
 |
2000
Trout Creek DamLocation: Buena Vista, CODuration: 01/00 - 05/00 Amount: Confidential Owner: Paul Moltz Engineer: Spann Engineering, LLC Design-Build 11,000 CY, 101-ft-high, RCC dam with a crest length of 130 ft. The vertical upstream face and 2-ft stepped downstream face were conventionally formed, cast-in-place concrete. Horizontal waterstop was placed in the upstream face cold joints. The project included 1,990 CY conventional concrete, two 24-inch steel outlet pipes, and aggregate screened on-site. RCC was placed by conveyor to crane delivery, and bedding grout and conventional concrete were placed by crane delivery. |
|
Pueblo Dam ModificationLocation: Pueblo, CODuration: 09/98 - 03/00 Amount: $9,346,659 Owner: Bureau Of Reclamation Engineer: Bureau Of Reclamation Project involved in-filling the existing stilling basin with RCC and overlaying the RCC with concrete. Salient features include drilling of foundation drains; high pressure water blasting of the existing concrete; installation of well point dewatering system; producing, delivering, and placing RCC in the existing stilling basin and creating a new upstream face for the stilling basin at a 2:1 slope with RCC; installation of an elevated, 4000 cfs, 60 fps diversion flume system; drilling and grouting of rock bolts and anchor bars; overlaying the RCC with conventional concrete including reinforcing steel; and contact grouting of induced cracks in the RCC. |
|
Stratmor Sanitation Emergency Watershed ProtectionLocation: Colorado Springs, CODuration: 03/00 - 03/00 Amount: $50,448 Owner: USDA (NRCS) Engineer: USDA Rehabilitation of an eroded stream bank with 2,150 tons of riprap. |
|
Washakie Dam Safety ModificationsLocation: Fort Washakie, WYDuration: 05/99 - 01/00 Amount: $3,878,190 Owner: Eastern Shoshone & Northern Arapaho Tribes c/o Office Of The Tribal Water Engineer Engineer: MSE-HKM, Inc. Safety modifications to the existing earthen dam. Major items of work included developing and implementing a phased stream diversion; foundation dewatering; internal seepage collection drain system; low-permeability blanket seepage barrier upstream; deep toe drain collector system; demolition of existing outlet works and installation of new conduit and stilling basin; replaceing outlet work control gates and operator with modifications to gate chamber and structure; construction of new service spillway and footbridge; raising and leveling crest of main dam and three dikes; and new instrumentation. Includes 153,000 CY earthfill and 4,500 CY of conventional concrete. |
1999
Toker River Water Supply ProjectLocation: North Of Asmara, Eritrea (NE Africa)Duration: 01/97 - 12/99 (RCC Complete 04/99) Amount: $27,407,754 Owner: Government Of Eritrea Engineer: URS/Woodward-Clyde Consultants Construction of new RCC dam with a vertical cast in place upstream face and stairstepped cast in place downstream face. Work includes 208,000 CY of common and rock excavation, curtain and blanket grouting of the dam foundation, an overflow spillway and outlet control tower with seven sluice gates. Total conventional concrete 30,000 CY. Dam is 246-ft-high with a crest length of 800 ft. |
|
Goose Lake Dam Seepage Modification ProjectLocation: Nederland, CODuration: 08/99 - 12/99 Amount: $618,843 Owner: City Of Boulder Purchasing Division Engineer: ECI Geomembrane lining and rockfill ballast repair for timber crib/shotcrete dam. The project involved the processing and placement of filter sand, rockfill, and riprap; the repair of existing shotcrete dam face; installation of a new intake structure and pipe; and placement of structural and backfill concrete to stop leaks in the dam foundation. The dam is located at 10,500 ft in elevation. |
|
Grizzly Outlet Works RehabilitationLocation: Aspen, CODuration: 11/99 - 12/99 Amount: $63,530 Owner: Twin Lakes Reservoir & Canal Company Engineer: Twin Lakes Reservoir & Canal Company Project involved placing a 320 sq. feet of 1/2-inch thick steel liner in the outlet works. Work included 169 cubic feet of skin grouting, and water diversion, located at an elevation of 11,000 ft. |
|
Rio Grande Reservoir Outlet RepairsLocation: Creede, CODuration: 11/99 - 12/99 Amount: $66,466 Owner: San Luis Valley Irrigation District Engineer: Harza Engineering Co. Project involved repairs of cavitation damage in existing outlet tunnel at Rio Grande Reservoir. Included steel fabrication and fiber reinforced shotcrete. |
|
Silver Lake Energy Dissipation ProjectLocation: Nederland, CO Construction of new pressure reducing valve (PRV)/future powerhouse structure and switchyard. Work included furnishing and installation of equipment, facilities, services and appurtenances. The work generally included reinforced concrete PRV/future powerhouse structure; furnish and installation of 10-ton overhead crane; 25 kV electrical switchyard, access road, and inlet pipeline to Lakewood reservoir. |
|
Roberts Tunnel Gate RepairLocation: Summit County (West Portal)Duration: 06/98 - 02/99 Amount: $818,130 Owner: Denver Water Board Engineer: Denver Water Board Removal and repair of 11 ft x 11.5 ft emergency gate for Dillon reservoir. Work includes removal of existing gate seat and installation of new custom fabricated and machined stainless steel gate thimble. Work required dewatering of 28 miles of Harold Roberts Tunnel, and installation of contractor fabricated tunnel plug by commercial divers using mixed gas method (due to altitude requirements). |
|
Buckhorn Reservoir ExpansionLocation: Sims, NCDuration: 03/98 - 06/99 Amount: $17,544,000 Owner: City Of Wilson, NC Engineer: Hazen & Sawyer, P.C. Construction of new 44-ft-high, 2,562-ft crest length RCC dam. Major items of work include develop and implement phased stream diversion; foundation dewatering, grout dam foundation; construct starter wall; prepare and place precast concrete panels on upstream dam face with PVC geomembrane; install dam foundation and internal drains; placement of RCC, bedding mixes, and conven-tional concrete for RCC dam, spillway, intake structure, downstream weir and miscellaneous structures. Clearing and grubbing, related road improvements, misc. site, mechanical, electrical and instrumentation work. |
1998
LaJara Lake Dam ModificationsLocation: Dulce, NMDuration: 04/98 - 11/98 Amount: $1,242,560 Owner: Jicarilla Apache Tribe Engineer: Benham-Holway PowerGroup, CityPlex Creation of wetlands, replacement of outlet works, and reconstruction of an earthen dam. |
|
Arroyo De Las CallabacillasLocation: Albuquerque, NMDuration: 02/98 - 07/98 Amount: $2,125,024 Owner: AMAFCA Engineer: Wilson & Company Construction of 2,300 ft of soil cement channel with 1:1 steep side slopes. Project included 37,300 CY soil cement, 3,600 SY colored shotcrete and 90,000 CY earthwork. |
|
Tie Hack Dam And ReservoirLocation: Buffalo, WYDuration: 04/96 - 10/97 & 05/98 - 06/98 Amount: $9,440,610 Owner: City Of Buffalo, WY Engineer: States West Water Resources Construct a new 155-ft-high, 550 ft crest length RCC dam. Project includes on-site aggregate and concrete production, stream diversion, new outlet works installation and appurtenant features. Construction significantly impacted by location in steep canyon with no downstream access. |
|
Koyna Hydroelectric Project - LaketapLocation: Northern India, HimalayasDuration: 03/98 - 04/98 Amount: $132,000 Owner: The Government Of Maharashtra, India Engineer: Patel Engineering Company, Ltd. Two simultaneous taps, 7.5 m in diameter drilled at a 45-degree angle with the bottom of the reservoir, under approximately 20 m of head pressure. Controlled blasting techniques were used to excavate within approx. 8.5 m of the bottom of the reservoir. Electric detonators using dynamite as the main explosive initiated the blast. Some rock bolting, along with reinforced shotcrete was used on the face of the plug before the final drilling commenced. Stop logs were installed before the blast and the tunnels were filled with water to allow for a "softer" shock wave. |
|
Big Thompson Canyon Outlet Siphon RepairLocation: Loveland, CODuration: 03/98 04/98 Amount: $131,113 Owner: Northern Colorado Water Conservancy District Engineer: Northern Colorado Conservancy District Removal and replacement of top 120 degrees of cast-in-place concrete section of pipe, for an approximate distance of 70 ft. Inside diameter 9 ft, at a slope of .77 vertical ft for each horizontal ft of run, with a wall thickness of 10-inches. |
1997
Mona Dam RehabilitationLocation:Duration: Amount: $ Owner: Engineer: |
|
Rio Grande Dam Outlet RestorationLocation:Duration: Amount: $ Owner: Engineer: |
|
Lincoln Connection Canal Lining & Erosion Repair And Tabor Spillway & TurnoutLocation:Duration: Amount: $ Owner: Engineer: |
|
Antero Dam Outlet Works ReplacementLocation:Duration: Amount: $ Owner: Engineer: |
|
Ten Mile Tailing #3 Dam ReclamationLocation:Duration: Amount: $ Owner: Engineer: |
|
San Antonio Arroyo ImprovementsLocation:Duration: Amount: $ Owner: Engineer: |
|
Brush Hollow Dam Outlet PipeLocation:Duration: Amount: $ Owner: Engineer: |
|
Huntley Irrigation District Tunnel #2 Enlargement & RestorationLocation:Duration: Amount: $ Owner: Engineer: |
|
Platanovrissi DamLocation:Duration: Amount: $ Owner: Engineer: |
