DEP smoke testing release, Brooklyn sewers, Aug 1984

NYC 9/11 Public Portal Document

Exhibit #2 SMOKE TESTING NOTICE

Dear Resident: The New York City Department of Environmental Protection, Water Quality Unit will be smoke testing the sanitary sewers in your area beginning in the next several days and continuing through the week. The purpose of this test is to find where rain water is getting into the sanitary sewer. This test is performed by blowing smoke through the sewer lines. Under normal conditions smoke can be seen coming from the plumbing vents located on roofs in the area for approximately 10 minutes. Traps in the house plumbing should prevent smoke from entering the house. Pour water into basement floor drains to make sure that these traps have a water seal. If you have a sink or shower that has not been used recently, please turn it on for a short period prior to the testing day. Please do not be alarmed by this test. The smoke used is non hazardous, non-staining, non-combustible and will not leave a residue. Every eifort will be made to keep any inconvenience to you at a minimum. If ypu have any questions, please call Mr-s—Robert-Ga^^oglrio- -e^ "^e New York City Department of Environmental Protection, Water Quality Unit at 566-3730 or —Denise 'Novin ot~Pie New York City Department of Environmental Protection, Public Participation Office at 566-5271.

NYC-WTC_000143347