Case Studies file drawer

Leading the way in environmental infrastructure maintenance since 1949

Carylon companies have been providing superior service nationwide for decades. Our unmatched expertise, which includes proprietary equipment and processes, allows us to successfully complete even the most demanding projects safely, on time, and on budget.

Amos Fly Ash Pond Closure

  • Hydraulic Dredging

MDVP utilized a 12″ cutter suction dredge to hydraulically dredge approximately 500,000 CY of fly ash to create a series of channels on this pond closure project. MDVP strategically placed the dredged sediments throughout the pond to facilitate follow-up capping. […]

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Borough of Avalon Hydraulic Dredging

  • Hydraulic Dredging

Borough of Avalon 2014 Back Bay Dredging Maintenance Dredging Project. MDVP provided a 14 inch hydraulic cutter suction dredge, booster pump and 14,000 feet of pipeline and crew to dredge the Back Bay of Avalon, NJ. The channel and coves had shoaled in with sandy sediments from Hurricane Sandy and the sediments needed to be removed for safe access for public boating. Approximately, 80,000 cubic yards were dredged including material from private slip owners and placed in a confined disposal facility. […]

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CIPP Sewer Rehabilitation

  • Digital TV Inspection
  • Sewer Cleaning
  • Vacuum Excavation

Bio-Nomic Services and National Water Main Cleaning (Boston) teamed up to bid and perform this project outside of Charleston, South Carolina […]

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City of Memphis Sanitary Sewer Evaluation and Rehabilitation Program

  • Digital TV Inspection
  • Sewer Cleaning

VIS was selected for this project to provide sanitary sewer cleaning and evaluation services to the City of Memphis SARP10 Sanitary Sewer Evaluation and Rehabilitation Program […]

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City of Wilmington Sewer Cleaning & Televising

  • Digital TV Inspection
  • Sewer Cleaning

Mobile Dredging and Video Pipe completed The City of Wilmington’s Phase 7 Cleaning and Televising Contract having completed Phases 1 through 6 over the previous ten-year period […]

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Cobb County/Marietta Water Authority

  • Hydraulic Dredging
  • Sludge Dewatering

Georgia Water Authority Performs Major Dredging Job In Record Time Experienced public works directors don’t need a crystal ball to see into the future. When the U.S. EPA (Environmental Protection Agency) established new water quality regulations in 2005, the public works officials in CobbCounty, Georgia (GA), knew that major rehabilitation work at their water treatm […]

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Emergency 60″ Diameter Sewer Cleaning

  • Digital TV Inspection
  • Sewer Cleaning
  • Vacuum Excavation

Louisville MSD discovered a blockage in a 60″ diameter, brick drainage main, within the floodplain that creates flooding risks for the surrounding upstream area. Due to the amount of debris, MSD needs to have the blockage removed in order to ensure the structural stability of the line and to avoid a collapse within the the main. […]

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Enfield Bridge Rehabilitation

  • Spincasting

National Water Main Cleaning Co. was selected to centrifugally cast AP/M Permaform PL 8,000 to a 11′ wide and 7′ tall CMP for 190 LF. NWMCC filled in by hand 2″ deep x 8″ wide corrugation then spin casted a 2″ thick liner on top of the filled corrugation. The large size of the pipe was a challenge as it was the maximum size for the spin casting equipment. […]

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Forest Hill Lake Dredging

  • Hydraulic Dredging

Forest Hill lake project finished under budget, early The lake is back in Forest Hill Park—under budget and ahead of schedule. “That’s what you call a successful project,“ said Eric Zeigler, excavation manager for Metropolitan Environmental Services Inc., an Ohio-based company that did the work in five months instead of six. The lake, more than […]

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Jefferson County Sewer Cleaning

  • Digital TV Inspection
  • Manhole Rehabilitation
  • Sewer Cleaning

Video Industrial Services was selected for this project to provide sanitary sewer cleaning and evaluation services to the Jefferson County Department of Environmental Services as part of their ongoing Asset Management Program. Designed as a “Find & Fix” rehabilitation project, the evaluation scope of work involved sewer cleaning, PACP compliant CCTV inspection, MACP compliant manhole inspection, and smoke testing of defined areas of the County’s 3,100 mile sanitary sewer system. […]

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Large Diameter Sewer Cleaning

  • Sewer Cleaning

The City of Sunbury advertised for bids a cleaning of an 8 foot combined box culvert sewer and Mobile Dredging and Video Pipe was awarded the contract. […]

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Lower Crum Creek Reservoir Dredging

  • Hydraulic Dredging
  • Sludge Dewatering

In the first phase of the contract, MDVP utilized an 8 inch swinging ladder hydraulic dredge to remove approximately 6,500 cubic yards of sediment and organics for the Lower Crum Creek Reservoir in Media, PA. […]

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Montecito Sanitary District Mudslide Cleanup

  • Digital TV Inspection
  • Lateral Service Line Inspection and Sealing
  • Manhole Rehabilitation
  • Sewer Cleaning

After the California mudslides in January 2018, National Plant Services was contacted by the Montecito Sanitary District to assess damage in sewer lines, clean manholes that were charged to the top with mud, internally cap laterals from houses that were washed away or red-tagged, repair broken lines, and assist their crew as needed. […]

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Nassau County Sludge Dewatering

  • Sludge Dewatering

The Bay Park Sewage Treatment Plant of Nassau County was devastated by superstorm Sandy in 2012 and Nassau County, NY issued an emergency bid for sludge dewatering services for this facility.   Mobile Dredging & Video Pipe, Inc. (MDVP) won this contract which includes design, construction and operation of the sludge dewatering facilities for this 50 MGD wastewater treatment plant […]

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New Jersey Department of Transportation

  • Hydraulic Dredging
  • Sludge Dewatering

MDVP hydraulically dredged 48,900 cubic yards from the navigation channel at St. Georges Thorofare. The dredged material was pumped to the beach in Absecon Inlet located in Brigantine, NJ. A bulldozer was used to contour the fill to match the existing beach elevations and natural slopes. […]

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New York City Sewer Cleaning

  • Sewer Cleaning
  • Sonar Pipeline Inspection

National Water Main Cleaning was selected to complete a sewer cleaning project consisting of 17,000’ of 10’ diameter combined sewer, approximately 5,000 cubic yards of debris removal, and sonar inspection to verify cleaning. The project began on the Major Deacon Exp., (Rt.87), near the entrance to the George Washington Bridge and flows north to south through the Bronx palisade along the expressway and East River ending in the parking lots of Yankee Stadium. […]

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Pacific Northwest Tank Seal Inspections

  • Tank Cleaning

National set out on a month long project to conduct in-service seal inspections on above ground storage tanks for BP. This project took a seven-man crew from East Chicago, Indiana to Davenport, Iowa. After completing two seal inspections at the Davenport location, the National team traversed west, across the mountains, to Settle, Washington. While in Seattle, the team completed four seal inspections before heading to Portland, Oregon for the final leg of the project. Unfortunately, the above ground storage tanks were not ready for inspection in Portland. Therefore, National’s team began the arduous task of driving back to East Chicago, Indiana. […]

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Power Plant Boiler Outage

  • Hydro Blasting
  • Tank Cleaning

Covanta had a scheduled full boiler outage in October 2017. The scope of work included ash removal in the baghouse area, sifting conveyers, ram and additional hopper cleaning throughout the facility […]

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Raw Water Main Condition Assessment and Cleaning

  • Water Main Inspection & Leak Detection

Asset management sometimes requires a change in operation and maintenance instead of a pipeline rehabilitation approach. That was certainly the case for the City of De Soto, Kansas and their 3000 feet, 16-inch ductile iron raw water transmission main that crossed under the Kansas River from a well field north of the Kansas River. […]

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Sanitary District Sewer Cleaning

  • Sewer Cleaning

How would you handle the difficult job of cleaning 2.8 miles of large – 54″-72″ – interceptor? Its entire 14,800 linear ft. length, put into sanitary sewage transport service in 1948, had never before been cleaned. A survey, accomplished during a walk-through and video taping of its entire length by Thomas LaCross, P.E., project manager for consulting engineers Spalding DeDecker Associates, Inc. (Detroit, Michigan), had accurately profiled and analyzed the deposits. Sediment depths, LaCross reported, ranged from one to three ft throughout the entire line. Material, mostly debris and wet sand, totaled about 1,200 cubic yards. […]

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Sanitary Sewer Joint & Lateral Testing and Sealing

  • Lateral Service Line Inspection and Sealing

Mobile Dredging and Video Pipe works under a multi-year maintenance contract with New Castle County to perform testing and sealing of sanitary sewer joints and laterals. Under the supervision of Arcadis,  16,000 LF of 8” sanitary sewer (3,700 joints and 220 laterals) were tested and sealed in 2017. […]

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Shark River Channel Improvements

  • Hydraulic Dredging
  • Sludge Dewatering

The scope of work included dredging and dewatering of 102,000 cubic yards of sediment. Work was performed dredging with a 10 inch swinging ladder dredge pumping through over 6,000 feet of pipeline. […]

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Silver Lake Phase IV Dredging

  • Hydraulic Dredging

MDVP hydraulically dredged 150,000 cubic yards of sediment from Silver Lake. Sediment was pumped approximately 6,400 feet to a CDF. Effluent from the CDF was treated with a polymer to achieve strict lake water quality standards. […]

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St. Joseph’s Power Plant Maintenance

  • Hydro Excavation

NIM has proven to be a one-stop-shop for most customers. After months of cleaning frac tanks heat exchangers, water tanks, vac services, and general plant maintenance NIM has been given the chance to flex their hydro-excavation muscles by line locating, potholing, and trenching. This customer is upgrading their facility by adding extra ground wire throughout the facility. […]

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Texas City Refinery Sewer Project

  • Digital TV Inspection
  • Sewer Cleaning

Following the findings of the investigation of the March 23, 2005 explosion in the ISOM unit, BP initiated its BWOM (Benzene Waste Oil NESHAP) Program to eliminate Benzene releases into the air, ground and ground water. Specialized Maintenance Services was called on to handle the portion of the program requiring the cleaning and inspection of all storm sewer piping. […]

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Village Creek WWTP Tunnel Inspection

  • Digital TV Inspection

VIS was selected for this project to provide man-entry inspection and assessment of approximately 3,273 LF of 132” sanitary sewer influent tunnel. In addition to CCTV inspection of the tunnel to assess the structural integrity of the tunnel, the VIS man-entry crew performed pH testing and pick-testing of the cast-in-place concrete tunnel lining and recorded existing debris levels. […]

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