{"id":15745,"date":"2026-01-21T21:33:55","date_gmt":"2026-01-22T02:33:55","guid":{"rendered":"https:\/\/gowanuscag.org\/?post_type=tribe_events&p=15745"},"modified":"2026-10-28T17:48:44","modified_gmt":"2026-10-28T21:48:44","slug":"gowanus-canal-cag-water-quality-technical-committee-meeting-79","status":"publish","type":"tribe_events","link":"https:\/\/gowanuscag.org\/index.php\/event\/gowanus-canal-cag-water-quality-technical-committee-meeting-79\/","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 November monthly meeting on Monday, November 2nd, 2026 from 7:00 p.m. to 8:00 p.m., via Zoom video conference.<\/p>\r\n

You can join the Zoom meeting here: https:\/\/us06web.zoom.us\/j\/9808972869?omn=89344822562<\/a><\/p>\r\n

Agenda<\/span><\/p>\r\n

1.\u00a0Bond-Lorraine Sewer<\/strong>\u00a0abandonment and how the proposed initial design of the high-level sewer lines to take the street runoff will ultimately result in a LOT of disruption in the neighborhood.\u00a0Katia reported that the last time DEP did work on Columbia Street in 1975 or so, many buildings collapsed and people died.<\/p>\r\n

2.\u00a0Gas line at Huntington and other NAPL leaks.<\/strong>\u00a0Per Katia, there were all these special sealants that were not so impenetrable on the bulkheads.<\/p>\r\n

a. NAPL leak at head of the Canal \u2013 no action at the moment as EPA is still figuring out what is going on there \u2013 EPA said the bulkhead is bulging.\u00a0Katia noted that wouldn\u2019t National Grid be responsible for paying for the leak since the coal tar has migrated from the MGP site (Fulton at Thomas Greene Park) under the Canal and over to the east side where the NAPL leak is (next to the flushing tunnel at Butler Street).\u00a0Per Aaron, the GRT is the party responsible for that location.\u00a0The closure sheet capping the bulkhead there did not go down all the way and that is what Aaron believes is the source of the sheening.\u00a0They were going to do supplemental grouting but that approach is not effective, so they are now figuring out a different solution per Victoria.\u00a0If there is historic contamination from the Fulton site or other activities in the area, that exposure pathway is going to be sealed.\u00a0Joan showed Irene on Google Maps the area that we are discussing, and she will look into whether Fulton is involved.<\/p>\r\n

b. Gas line going across Public Place from west to east at Huntington needs to be sealed.\u00a0We asked Irene if that would be sealed by National Grid because it still supplies Red Hook.\u00a0Brian at the General CAG meeting acknowledged the\u00a0Gas Tunnel<\/strong>\u00a0\u2013 design discussions between EPA, GRT and National Grid to address sealing around that infrastructure before cleanup can happen in that area.\u00a0The bulkheads have to go in before any of that can happen and EPA is in charge of sequencing that.<\/p>\r\n

Also,\u00a0NAPL<\/strong>\u00a0leaking into the Canal\u00a0at Huntington<\/strong>.\u00a0Is National Grid going to seal that up?\u00a0Question sent to Victoria, what party is dealing with the bulkhead at the street end at Huntington, the City or a developer.<\/p>\r\n

c. Katia \u2013 Have they ever dredged around\u00a03rd\u00a0St Bridge pylons<\/strong>?\u00a0Aaron responded \u2013 RTA 1 substantially complete \u2013 odds and ends remaining like 1st\u00a0Street turning basin and the leak at the head of the canal.\u00a0As for 3rd\u00a0Street dredging around the pylons he thinks that may be addressed in the RTA 2 design.\u00a0\u00a0Joan sent that question to Victoria.<\/p>\r\n

d. Joan asked how many third party bulkheads are not done?\u00a0Eight to nine properties including the 7th\u00a0Street turning basin.<\/p>\r\n

3.\u00a0Turning Basin 1\u00a0<\/strong>\u2013 Request presentation of completed design \u2013 Aaron said that by end of year we will have a 90% design presentation (per Facilitation Committee that is happening at the October General CAG \u2013 sent email to Victoria and Natalie to confirm since it is on the October agenda).\u00a0Resolution\u00a0regarding naming<\/strong> \u2013 Marylander Basin, Denton\u2019s Mill. Discussed re-naming and Aaron suggested that should be addressed to the Parks Department or Community Board 6.<\/p>\r\n

4.\u00a0Ingress\/Egress:\u00a0<\/strong>Aaron says in terms of the bulkheads designed by GRT, its responsibility is narrowly focused on the remedy \u2013 only purpose from a legal standpoint is to support the uplands banks.\u00a0GRT has no liberty to add bells and whistles like ladders, docks, chains.\u00a0Bulkheads are not owned by the GRT; they are owned by the property owners.\u00a0There is no requirement by the City to add those things so need legislation from City Council.\u00a0Joan asked Brian via email where the point of egress on Bond Street is that he referred to.<\/p>\r\n

5.\u00a0Mounding:\u00a0<\/strong>GRT did the last mounding study.\u00a0We\u2019d like to see the new one.\u00a0Aaron said study is done with the corresponding design.\u00a0Joan followed up by email reminding Aaron to look into whether there is a new mounding study.<\/p>\r\n

6.\u00a0Housekeeping<\/strong><\/p>\r\n

a) PowerHouse<\/strong>\u00a0walkway at Turning Basin 1.\u00a0\u00a0No update.<\/p>\r\n

b) Dissolved Oxygen Levels:\u00a0<\/strong>Need to follow up with Erica (not at this meeting) re: DEC response to CAG resolution re: DO levels<\/p>\r\n

c) Operation and Maintenance Plan:\u00a0<\/strong>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\u00a0Nothing yet.<\/p>\r\n

d) Hydrology –\u00a0<\/strong>Aaron responded (see below) that DEC hopes to have the survey complete by 1st Quarter 2027. Jason shared his map tool with Aaron to see if they can be combined.<\/p>\r\n

7.\u00a0Review emails and responses so far and decide whether to send follow up questions on some<\/strong><\/p>\r\n

a) Real-time canal monitoring\/public reporting<\/strong>\u00a0\u2013 waiting on Court of Appeals.\u00a0No action.\u00a0Summary of decision below.\u00a0Mike Dulong presented at General CAG 9\/22\/2026.<\/p>\r\n

b) CSOs \u2013 Joan reported out answer from DEP regarding its Long-Term Control Plan<\/strong>.\u00a0See 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.\u00a0At that point, DEP\u00a0and other PRPs\u00a0<\/strong>would be required to dredge.\u00a0\u00a0March 30, 2026, EPA notified the City of the completion of capping in RTA1.\u00a0Under the terms of the 2021 UAO, the City will have\u00a0one year from the date of that letter to begin in-canal sediment sampling.\u00a0<\/em><\/strong>We are awaiting a schedule from the City.<\/p>\r\n

c) NAPL leaks and remediation at the head of the Canal\u00a0\u2013\u00a0<\/strong>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).\u00a0It 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.\u00a0Work is in progress.\u00a0Victoria\u2019s full response is below but at the 9\/22 CAG meeting she indicated\u00a0there is\u00a0bulging at the bulkhead so they are re-evaluating the plan<\/strong><\/em>.\u00a0Irene to follow up regarding the Gas Pipe and re: NAPL at Canal Head.<\/strong><\/p>\r\n

d)\u00a0\u00a0Other issues<\/strong><\/p>\r\n

–\u00a0Has DEP started to measure how much of\u00a0first flush<\/strong>\u00a0the new buildings are capturing?\u00a0We did not cover this yet.<\/p>\r\n

–\u00a0Did the scientific projections in the\u00a0LTCP<\/strong>\u00a0account for the results of climate change?\u00a0 We eventually will ask questions about this.<\/p>\r\n

– Bond-Lorraine Sewer\u00a0<\/strong>\u2013 Katia feels that it is very important DEP Alicia West \u2013\u00a0Appears 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\u2019s end.\u00a09\/16 Joan sent questions to DEP.\u00a0\u00a0Andrea said, at the General CAG meeting that the north flowing CSO pipe will be (obviously) underground and will flow down, not uphill, and will not empty into the flushing tunnel.\u00a0Another long discussion about\u00a0Bond-Lorraine map<\/strong>.\u00a0Will the streets be torn up everywhere there is an arrow on that map?\u00a0We definitely ultimately want a community presentation<\/u><\/strong>.\u00a0Wrote to Alicia and discussed with Alicia after this meeting.\u00a0Supposedly CB6 has asked, GOTF has asked, we have now asked, too.\u00a0She will get back to me.\u00a0I will follow up with her.<\/p>\r\n

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

The Gowanus Canal Community Advisory Group’s Water Quality\/Technical Committee will hold its November monthly meeting on Monday, November 2nd, 2026 from 7:00 p.m. to 8:00 p.m., via Zoom video conference…. 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