Research Project Information

Research Project Summary Information

Pilot & Demo of Substratum Intake System, Northport Generating Station(ST10085-1)

EEA, Inc.


In response to the U.S. EPA’s efforts to reduce impact of once-through cooling water intake systems on fish eggs and other wildlife, EEA developed the Substratum Intake System (SIS), which would enhance filtration. In contrast to traditional surface-water intakes, the SIS would be drilled into the sediments beneath the water source and draw in water filtered through the natural strata below the water source. The concept has received favorable comments from EPA, Regional NYSDEC staff and power company staff, as well as regulatory agencies in other states, but the need for a pilot/demonstration project to confirm the predicted operational characteristics is recognized.

Map Error

Project Description

Specific objectives include: • Designing plans and specifications for a pilot-scale project • Drilling a vertical production well to verify geology, including sampling and analyzing the substrate particle size distribution • Installing and monitoring piezometers, collecting temperature data, and conducting tests to assess hydraulic conductivities and other data to refine groundwater modeling • Confirming the suitability of the sub-strata using bore logs from the construction of the Shoreham Nuclear Power Station or by performing offshore sub-bottom profiling


Emissions may be reduced during summer peak load because of the lower inlet water temperature and therefore increased efficiency. The SIS is being developed by a relatively small NYS company that invented the system. If the demonstration is successful the company will experience revenue growth through licensing and consulting activities. All NYS power plants with once-through cooling systems and suitable aquifer geology may be candidates for the SIS.

Project Results

A final report was received. The pilot well did not operate as anticipated due to complications with drilling muds used. The drilling mud used dramatically impeded permeability of the well when used in a saline environment, which was not known prior to the demonstration. National Grid and the Long Island Power Authority are considering a further technology demonstration phase at Port Jefferson.


EEA, Inc.
55 Hilton Ave
Garden City, NY 11530

Principle Investigator

Roy Stoecker

Universities Involved


Project Type:

Product Development

Technologies Types:

Waste Management and Pollution Prevention
Water/Wastewater treatment systems

NYSERDA Contact Information

Barry Liebowitz


R&D -Transport & Power Systems

Contract Details

Start Date: 1/11/2010
Project Status: Active
Contract Number: ST10085-1

Last Updated: 6/28/2013