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Underwater Mineral Processing Services: Water Treatment Plant – Alum Sludge Removal & Geotextile Tube Dewatering (Braintree, MA)

The Challenge Many municipal and private water treatment plants need to condition their incoming raw water with the removal of suspended solids materials. This task is typically performed through chemical conditioning with the addition of an approved precipitating / flocculating chemical in preparation for gravity settling of these solids.  [...]

2022-12-16T00:32:55+00:00September 2nd, 2022|

UMPS Successfully Completes Hydraulically Dredged Sediment Dewatering for Philadelphia Water Works Schuylkill River Boathouse Row Channel

In the shadow of the Rocky statue at the Philadelphia Museum of Art, Underwater Mineral Processing Services (UMPS), an operational division of Underwater Construction Corporation (UCC), was contracted under a Philadelphia Water Works Park Amenities & Island Enhancement Project to process 2,000 gallons per minute (gpm) of hydraulically dredged [...]

2022-09-02T19:18:45+00:00August 29th, 2022|

UMPS Assessment & Flow Restoration of Ranney Well Radial Collector Laterals at Connecticut River Power Plant

The Challenge  Cooling water intake cleaning is a continual challenge for power plants. But what happens when the cooling water intakes are screened laterals that are the heart of a Ranney Radial Well System?   The Kleen Energy power plant in Connecticut has two Ranney Vertical Wells supplying their cooling [...]

2022-08-31T22:08:31+00:00August 24th, 2022|

UCC Support of Invasive Mussel Control Demonstration Project

The USGS figure below presents the point distribution map of Dreissena polymorpha throughout the continental US through February 2019. Figure 1: Zebra Mussel Population Estimates Non-native zebra and quagga mussels invaded the Great Lakes region in the early 1990s arriving in foreign ships’ ballast water. Some [...]

2022-08-09T21:39:20+00:00August 8th, 2022|

Marine Infrastructure Upgrades – Mid-Atlantic Region, USA

50 YEARS OF ENVIRONMENTAL IMPACT Fifty years of harsh marine environmental impact required the rehabilitation of the bridge pier steel casings.  Previous marine infrastructure repairs such as fiberglass jackets filled with no shrink grout or a combination of steel jackets with grout and reinforcing steel did not stand the test [...]

2022-06-14T21:00:56+00:00February 9th, 2022|

Dam Stilling Basin Repair

In November 2020, Underwater Construction Corporation (UCC) was contracted by a hydroelectric utility to conduct repairs to a dam’s stilling basin.  Previous inspections had identified areas of spalling and exposed concrete reinforcement.  Additionally, a section of baffle blocks had become dislodged and swept downstream during a high-water event.   To [...]

2022-07-27T20:01:05+00:00October 6th, 2021|

Air Diving Experience

Hydroelectric Facility   Work Scope – Head Gate Rail and Cable Tray Service    Drilling and Anchor Installations    Rock and Other Debris Removal   Air Surface Supplied Diving   Depth – 167 Feet   Number of Dives – 250   Unique Variables   Specialized Navy Dive Table and Schedule due to 2400 Feet Altitude   Surface Decompression [...]

2022-07-27T20:02:08+00:00September 3rd, 2021|

Drinking Water Reservoir Rehabilitation

Carbon Fiber Reinforced Polymer The facility is a water reservoir built in the 1920s. Recently leaks and spalling of concrete have been observed. Composite Construction, LLC of Tucson, Arizona and its partner, Connecticut's Underwater Construction Corporation provided a solution using its propriety carbon fiber reinforced polymer concrete. This propriety system [...]

2022-06-14T21:11:30+00:00April 10th, 2021|
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