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Public Notice: Morris Causeway FEMA Grant Program Funding

News & Notices

GREATER NEW HAVEN WATER POLLUTION CONTROL AUTHORITY

PUBLIC NOTICE

November 13, 2024

Pursuant to Executive Order 11988 (Floodplain Management) and Federal Emergency Management Agency’s (FEMA) implementing regulations at Title 44 of the Code of Federal Regulations Part 9, FEMA hereby provides final notice of its decision to provide Hazard Mitigation Grant Program funding for an action located in a floodplain. Funding would be provided through CT Division of Emergency Management and Homeland Security to the Greater New Haven Water Pollution Control Authority to mitigate flood and power loss hazards at the Morris Cove Pump Station.

The action is located on Morris Causeway in New Haven Connecticut. A 160-foot-long floodwall would be constructed through the paved parking area, and flood barriers would be installed at exposed building and chamber openings. Mechanical and electrical equipment on the property would be elevated. The existing 1,000-gallon diesel fuel tank for the onsite emergency generator would be replaced with a 3,300-gallon tank.

The project is within a mapped Special Flood Hazard Area. The proposed action is expected to significantly reduce the risk of damage to the structure from flooding. The affected area primarily consists of paved surfaces and a maintained grass lawn, and no direct or indirect adverse impacts to the beneficial functions of the floodplain are anticipated. A map of the area of available upon request.

The project must in be in a floodplain because the gravity-fed pump station depends on being located in a low-lying area to function. Elevation of the structure was considered and dismissed due to financial impracticability and the practical challenges of maintaining service during construction. A larger flood wall around the entire property was considered and dismissed due to the financial impracticability and the potential adverse impacts to the beneficial functions of the floodplain. The “No Action” alternative was considered and dismissed because it fails to reduce the flood hazard to the region’s wastewater system. Grant conditions will require compliance with all federal, state and local laws, including coordination with the local floodplain administrator.

Map requests and comments about this project and potential floodplain impacts should be submitted within 15 days of the date of this publication to:

Alexander Miller
Federal Emergency Management Agency, Boston, MA

Alexander.Miller@fema.dhs.gov; (202) 746-6856

 

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GNHWPCA Pipe Lining General Information

Construction Alerts

GNHWPCA Pipe Lining General Information

Cured in Place Pipe (CIPP) lining is a proven trenchless rehabilitation process used to repair existing pipelines. Benefits include:

  • pipes can be rehabilitated without digging up the existing pipe or disrupting roads, driveways, sidewalks or landscaping
  • lining is less expensive than replacing the pipe
  • it allows for increased sewer flow capacity
  • the process can be completed in one to three days

 

Notices will be provided to residences and establishments in advance of any sewer lining work on their street.  Notices will be provided by the GNHWPCA's contractor both 10 days prior to and 24 hours prior to the conduct of the expected work.  Click the links on the right to see a sample of the 10-day and 24-hour notices.

The lining process involves installing a resin-saturated felt tube into an existing sewer pipe, that is inflated and hardened to create a new plastic pipe within the old pipe. During the process, a steam cloud coming from a vent stack at a manhole may be visible and occasionally there may be a "glue like" odor (styrene) during the curing process that will dissipate quickly when the process is complete.  To prevent odors from entering your home, all residents that receive a notice should pour ½ gallon of water into all plumbing fixtures and floor drains, especially those in basements where they are not used on a regular basis. See attached link on the right "Styrene Odor Information Document" for more information on how to keep sewer gas and other vapors out of your home or building.

Prior to lining the existing sewer, crews clean the pipe using high pressure water hoses and video cameras to inspect the pipe condition. They may also conduct dye testing to confirm connections between buildings and sewers. As such, residents may see activities related to the sewer relining for several weeks leading up to the actual lining.

 

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GNHWPCA Large Diameter Pipe Cleaning Program

Construction Alerts

GNHWPCA Large Diameter Pipe Cleaning Program

GNHWPCA’s large diameter sewer pipes range from 30 inches in diameter to 84 inches in diameter. Most of these large diameter sewer pipes are main interceptor sewers located in the City of New Haven that transport combined flow to the ESWPAF for treatment. Periodic cleaning of these interceptor sewers is required to remove sand, grit, rocks, and other heavy debris that can accumulate in the pipe over time.Work crews clean the pipe using high pressure water hoses, cleaning heads and vacuums to extract the debris. Video cameras are also used to inspect the pipe prior to and post cleaning of the sewer pipes. As such, residents may see activities related to the large diameter pipe inspections for several weeks leading up to the actual cleaning of the pipes.

Click this Large Diameter Sewer Cleaning Projects link to view locations where large diameter pipe cleaning projects are being implemented and when.

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Public Information Meeting December 14, 2016 CSO Long Term Control Plan Update

News & Notices

CSO Long Term Control Plan Update

Public Information Meeting December 14, 2016

Public Informational Meeting Notice

City of New Haven Combined Sewer Overflow Long-Term Control Plan Update - Draft December 2016