{"id":15743,"date":"2026-01-21T21:32:24","date_gmt":"2026-01-22T02:32:24","guid":{"rendered":"https:\/\/gowanuscag.org\/?post_type=tribe_events&p=15743"},"modified":"2026-10-01T15:02:02","modified_gmt":"2026-10-01T19:02:02","slug":"gowanus-canal-cag-water-quality-technical-committee-meeting-78","status":"publish","type":"tribe_events","link":"https:\/\/gowanuscag.org\/index.php\/event\/gowanus-canal-cag-water-quality-technical-committee-meeting-78\/","title":{"rendered":"Gowanus Canal CAG Water Quality & Technical Committee Meeting"},"content":{"rendered":"

The Gowanus Canal Community Advisory Group’s Water Quality\/Technical Committee will hold its October monthly meeting on Monday, October 5th, 2026 from 7:00 p.m. to 8:00 p.m., via Zoom video conference.<\/p>\n

You can join the Zoom meeting here:\u00a0https:\/\/us06web.zoom.us\/j\/9808972869?omn=88094846131<\/a><\/p>\n

Meeting ID: 980 897 2869<\/p>\n

1. Open Issues<\/u><\/p>\n

a. Seal Gas line at Huntington and other NAPL leaks<\/p>\n

b. TB 1 Request presentation of completed design and Reso regarding naming \u2013 Marylander Basin, Denton\u2019s Mill.<\/p>\n

c. Ingress\/Egress<\/p>\n

d. Mounding: We will follow up on the mounding studies \u2013 Has EPA done a new one? If so, present on it again. Issue is forward-looking \u2013 climate change.<\/p>\n

2. Housekeeping<\/u><\/p>\n

a. PowerHouse walkway at TB1. No update<\/p>\n

b. DO Levels: Any acknowledgement from Fagel, Waldron or Smith to our resolution re: DO levels, Erica?\u00a0 NOT YET \u2013 8\/3\/2026 Erica followed up.<\/p>\n

c. OMP: What is EPA\u2019s demand for responsible parties to maintain an operation and maintenance plan (OMP) for the Gowanus Canal Clean-up strategy? Who will ensure that the OMP is done going forward? Will EPA continue to check that the water quality remains good and that the cap is intact? Does EPA have an OMP Plan? Where is it?\u00a0 Will follow with Katia at next meeting.\u00a0 Katia was not present.\u00a0 We will follow up.<\/p>\n

d. Hydrology – Aaron responded (see below) that DEC hopes to have the survey complete by 1st<\/sup> Q 2027. Current hydraulic conditions, including groundwater elevations and flow direction. DEC study.\u00a0 We know they are not including toxins in the study.\u00a0 <\/em><\/p>\n

Suggestion \u2013 overlay the map.\u00a0 \u2013 <\/em>Now that Jason has created a tool, can DEC use it once its survey is done?\u00a0 Can we use it?\u00a0 If DEC does not want to use our tool, can we layer their survey results into our map?\u00a0 Jason shared with Aaron.<\/p>\n

3. Review emails and responses so far and decide whether to send follow up questions on some<\/u><\/p>\n

a. Real-time canal monitoring\/public reporting \u2013 waiting on Court of Appeals. No action. Summary of decision below. Mike Dulong presented at General CAG 9\/22\/2026.<\/p>\n

b. Bond-Lorraine Sewer \u2013 DEP Alicia West \u2013 Appears DEP will run the sewage from Smith to the canal northwards to the Pumping Station, while they run the storm water from that area south where it will be dumped into the canal at Public Place. Design planned to go to DDC by year’s end. 9\/16 Joan sent questions to DEP \u2013 no response yet. Andrea said at the General CAG meeting that north-flowing CSO pipe will be (obviously) underground and will flow down, not uphill, and will not empty into the flushing tunnel. Awaiting DEP confirmation.<\/p>\n

c. CSO’s\u00a0\u2013 DEP Alicia West, EPA Victoria Sacks \u2013 We got an answer from DEP regarding its LTCP. See below for full answer but importantly there is no LTCP for the CSO tank results and re-dredging would only happen if EPA orders it.\u00a0 At that point, DEP and other PRPs would be required to dredge.\u00a0 There is no amount of sediment that would trigger a re-dredging, but there are other triggers.\u00a0 Under EPA’s ROD, there are several recontamination limits based on environmental sediment quality that would be the trigger for maintenance dredging.\u00a0 The most notable trigger is sediment exceeding 20 ppm of PAHs.\u00a0 March 30, 2026, EPA notified the City of the completion of capping in RTA1. Under the terms of the 2021 UAO, the City will have<\/em> one year from the date of that letter to begin in-canal sediment sampling.\u00a0 <\/em>The text of the letter is below.\u00a0 We are awaiting a schedule from the City.<\/p>\n

d. NAPL leaks and remediation at the head of the Canal \u2013 Joan followed up to obtain Victoria\u2019s answers to our questions (below) that Tom Mongelli read out at the CAG meeting 7\/27 (see below). It seems a lot of what is going on is based on suspicion of what is going on but is also exploratory if EPA has it wrong.\u00a0 Work is in progress.\u00a0 Victoria\u2019s full response is below but at the 9\/22 CAG meeting she indicated there is bulging at the bulkhead so they are re-evaluating the plan<\/em>.<\/p>\n

4:\u00a0 Future or today<\/span>?<\/p>\n

a. Has DEP started to measure how much of first flush the new buildings are capturing?\u00a0 We did not cover this yet.<\/p>\n

b. Did the scientific projections in the LTCP account for the results of climate change?\u00a0 We eventually will ask questions about this.<\/p>\n

All Gowanus CAG meetings are open to the public, unless specifically noted otherwise.<\/p>\n","protected":false},"excerpt":{"rendered":"

The Gowanus Canal Community Advisory Group’s Water Quality\/Technical Committee will hold its October monthly meeting on Monday, October 5th, 2026 from 7:00 p.m. to 8:00 p.m., via Zoom video conference…. 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