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Delaware Engineering Letter — April 2025 Sewer Report

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    Delaware Engineering Letter — April 2025 Sewer Report
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Delaware Engineering, D.P.C.

28 Madison Avenue Extension Albany, New York 12203

Tel: 518.452.1290 Fax: 518.452.1335

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June 4, 2025

The Honorable Mayor Karen Smythe Village of Red Hook 7467 S Broadway,Red Hook, NY 12571

Subject: Village of Red Hook WWTP – April 2025 Sewer Report

Dear Mayor Smythe:

On Monday, March 31st, our office assumed operational responsibility for the Village's old and new wastewater treatment plants. Both facilities were found to be in a severely dysfunctional state, with inoperable equipment and treatment processes that were not meeting regulatory standards.

Several immediate actions were taken to begin restoring treatment capability. The old plant was taken offline, and all flow was diverted to the newer facility. To reduce hydraulic surges, the second and third EQ pumps were shut down, leaving only the first in operation. Aeration was increased to assist in building mixed liquor and suspended solids in the aeration basin. Temporary submersible pumps were deployed in the clarifiers to return activated sludge and support biological treatment.

The sand filtration system, which was completely fouled and producing no filtrate, underwent repeated backwashing to restore partial function. The UV disinfection system was cleaned, and the available functional bulbs were used to establish partial UV disinfection. To compensate for incomplete UV treatment, disinfection was supplemented using chlorination and dechlorination tablets.

Although gradual performance improvements were observed, the plant continued to fail to meet effluent permit limits due to the time required for full biological process recovery.

The following data is extracted from the DMR reports attached to this letter.

|Parameter|Units|Result Old Plant|Result New Plant|Limit| |---|---|---|---|---| |Average Day Flow|mgd|0|0.049|0.05| |TotalSuspended Solids (TSS)|mg/L|0|108|10| |Carbonaceous BOD5(5-Day)|mg/L|0|60|5| |Total Ammonia Nitrogen (as N)|mg/L|0|35.30|Note 1| |FecalColiform|MPN/100|0|2,503|200-400[2]| |Dissolved Oxygen|mg/L|0|6.11|7|

Notes:

  1. The limit for Total Ammonia Nitrogen (as N) is 0.98 mg/L from June 1[st] to October 31[st] and 1.81 mg/L from November 1[st] and May 31[st] .

  2. The limit for Fecal Coliform is regulated as 200 No./ 100m over a 30-Day geometric mean and 400 No./ 100m over a 7-Day geometric mean.

223 Main Street Goshen, New York 10924 845.615-9232

55 South Main Street Oneonta, New York 13820 607.432.8073

548 Broadway Monticello, New York 12701 854.791.7777

16 East Market Street Red Hook, NY 12571 518.452.1290

Delaware Engineering, D.P.C.

Please call me at 518-452-1290 if you have any questions.

Sincerely,

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Roberto Flores, P.E.

2

Changes between versions

2024-12-09→2024-12-09
clerical+5 −5

The document remains substantively unchanged with only minor formatting and punctuation edits.

  • Title formatting changed from 'Village of Red Hook Mayor’s Report November 2024' to 'Village of Red Hook ’ Mayor s Report November 2024'
  • Removed comma in Red Hook Library section: 'construction projects, which included' $\rightarrow$ 'construction projects which included'
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## **Village of Red Hook ’ Mayor’ s Report November 2024** ## SEWER PROJECT I: The major outstanding item is the Single Audit. We are still waiting for this audit. There is one final MWBE report from Carver Construction to be filed with EFC. ## SEWER EXPANSION – PHASE II: We are working toward doing an Income Survey to increase our chances of getting Bipartisan Infrastructure funding and other grants as well. ## ABRAHAMS PARK TASK FORCE: The original group meet on Nov. 15[th] to get back together and review where we are. We had some preliminary feedback from the surveys. We meet again in December to review further. ## UPSEU CONTRACT NEGOTIATIONS: With the Board’s approval at our Nov. 21[st] meeting, I have signed both MOUs for the DPW and the Police Union contracts for 6/1/24 through 5/31/27. An MOU for Officer Lawson and the final contracts are to follow. ## WIIA – WATER PROJECTS: **SCADA Controls Upgrade** – The chlorine analyzer arrived and has been installed. System training remains to be completed. Obtaining a static IP address from our internet supplier, Frontier, is all that’s left to finalize alarm system and have it fully functional. Avanti Construction is the contractor. The original cost for this project was $416,700. With the deduct change order, the amount is $390,078. **Cherry & Graves Street Water Main Replacement** – The physical work is complete. We are reviewing the final numbers now. The contractor is Amity Construction. The original bidded cost for this project is $1,003,560. **Water Tank Rehabilitation** –This project is now complete – except for a contracted annual inspection to take place next summer. The contractor is Worldwide Industries. The contract cost for this project is $373,500. The deduct change order for $13,100 has been approved, making the contract amount now $360,400. ## OTHER WATER PROJECTS: **Lead line Inventory** –As required, we notified all customers for whom we do not have all information on their water line, including the homeowners service line. And if a portion is not identified, we must say there could be lead. At this time, there are no known lead service lines or water mains in the Village’s water system. A big thank you to Jen Cavanaugh who handled all of this communication. The inventory remains a living document that we will continue to update. ## DUTCHESS COUNTY TRANSPORTATION COUNCIL (DCTC): A virtual meeting was held on Oct. 30. The meeting began with a presentation from consultants Cambridge Systematics, who are working on a comprehensive traffic safety study that will become part of the County’s Safety Action Plan. They reviewed grant awards including an FTA Section 5310 Program Award to Devereux Foundation for replacement buses. They also reviewed upcoming funding opportunities. ## RED HOOK LIBRARY: I was not able to attend the November Library board meeting as it conflicted with the Village workshop meeting. I can report that they have completed their construction projects, which included replacing the stucco facade, restoring the porch, and refurbishing their teen space. They reviewed a form for the Director’s evaluation, presented initial work from the Strategic Planning Committee, and shared a draft 2025 budget. You can find their board packet on the Library’s website – redhooklibrary.org/board-of-trustees. ## OTHER: ## DAY OF THE DEAD I attended this event held Nov. 2[nd] at Hearty Roots Farm, formerly Cookingham East put on by Cultivar Community Farm and the Red Hook Community Center. ## MEGABRAIN RIBBON CUTTING I attended the Nov. 7[th] ribbon cutting for Megabrain hosted by the Red Hook Chamber of Commerce. Megabrain is a new store in the Village that opened in May. ## VILLAGE TREE PLANTING I joined many volunteers on Saturday, Nov. 9[th] to help plant new trees around the Village. ## VETERANS DAY The Red Hook VFW Post 7765 held their annual Veteran’s Day ceremony on November 11[th] at 11am at Memorial Park. It was a moving ceremony with words from their new Commander Jon Conroe, music from Veteran Dave Feroe, and a special tribute to the Vietnam Veterans by the Boys Scout Troop 42. ## TACONIC RESOURCES PRESS EVENT HONORING TIVOLI MAYOR GRIFFITH On Nov. 14[th] , I chauffeured Mayor Griffith and joined in to honor him for his leadership in focusing on ADA compliance where possible in Tivoli. Respectfully submitted, Mayor Karen Smythe

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