In an effort to reduce extraneous sources of water entering the collection system, the New York City Department of Environmental Protection conducted an Infiltration/Inflow investigation. Savin performed extensive field work for the I/I reduction program.

Smoke Testing: Sewers were smoke tested to determine potential inflow sources. This required extensive coordination with area residents including the Coney Island Aquarium. Due to the sensitive nature of the area, occupants, and Aquarium visitors, the testing was conducted in a manner to minimize disturbances.

Television Inspection: Sewers were televised through remote and walk-through inspection. In conducting this inspection, the field crews had to overcome several hurdles. Because the collection system was tidally affected, inspections could only be conducted during low tide periods. The sewers were also at a shallow pitch and collected deposition, thus making it difficult for remote television cameras to traverse the pipes. In addition, field crews had to contend with the extreme weather conditions, including the Blizzard of 1996.

Dye Testing: Dye testing was conducted to confirm cross-connections between storm and sanitary sewers to confirm configuration of collection system. 50 dye tests were conducted during the investigation.