==> picture [262 x 698] intentionally omitted <==

DRAFT June 10, 2024

Engineering Report

WWTP Upgrade and STEP Sewer System - Phase 2

VILLAGE OF RED HOOK

Dutchess County, New York

JUNE 2024

SPDES #NY0271420 CWSRF #C3-5387-01-01

==> picture [612 x 52] intentionally omitted <==

Village of Red Hook WWTP Upgrade and step sewer system Phase 2

Preliminary Engineering Report

Table of Contents

I. Executive Summary ........................................................................... 4 II. Project Background and History ................................................. 5 2.1 SITE INFORMATION ............................................................................................. 5 2.1.1 Location .....................................................................................................................5 2.1.2 Geologic Conditions .................................................................................................7 2.1.3 Environmental Resources ..........................................................................................8 2.1.4 Floodplain Considerations ...................................................................................... 12 2.1.5 Impacts to Environmental Justice Areas and Disadvantaged Communities ...... 13 2.2 OWNERSHIP AND SERVICE AREA ...................................................................... 13 2.2.1 Outside Users ........................................................................................................... 13 2.2.2 Industrial Discharges ............................................................................................... 14 2.2.3 Hauled Waste .......................................................................................................... 14 2.2.4 Population Trends and Growth ............................................................................... 14 2.3 EXISTING FACILITIES AND PRESENT CONDITION ............................................... 16 2.3.1 General Description and History of Major System Components .......................... 16 2.3.2 Significant Operations, and Maintenance History and Preventative Maintenance History ........................................................................................................ 19 2.3.3 Failure History and Component Limitations ........................................................... 19 2.3.4 Ability to Meet Current Design Standards for Treatment ...................................... 19 2.3.5 Planned, Current, or Future Improvements Outside Project Scope ..................... 19 2.3.6 Security and Cybersecurity ..................................................................................... 19 2.3.7 Hydraulic Capacity Analysis of Existing Sewers where Expansion or Increased Flow is Proposed ............................................................................................................... 19 2.3.8 Current or Future Projects on the Same Site .......................................................... 20 2.3.9 SPDES Permit Conditions and Effluent Discharge Limits ........................................ 20 2.3.10 Publicly Owned Sewer System Identification Number ........................................ 21 2.3.11 Documented Compliance Issues ......................................................................... 21 2.3.12 Design Flows and Waste Loads ............................................................................. 21 2.3.13 Analyses of Production Rates for Processing or Manufacturing Operations ...... 21 2.3.14 Existing Energy Consumption ................................................................................ 21 2.3.15 Photographs .......................................................................................................... 21 2.3.16 History of Damage due to Storm or Flood Impacts ............................................. 21

1

Delaware Engineering, D.P.C.

Village of Red Hook WWTP Upgrade and step sewer system Phase 2

Preliminary Engineering Report

2.4 DEFINITION OF THE PROBLEM & NEED FOR THE PROJECT .................................. 22 2.4.1 Health, Sanitation, Security and Cybersecurity .................................................... 22 2.4.2 Short-term Asset Needs as supported by a Capital Improvement Plan or Asset Management Plan ........................................................................................................... 22 2.4.3 Aging Infrastructure ................................................................................................. 22 2.4.4 Need for Redundancy ............................................................................................ 23 2.4.5 Infiltration and Inflow, CSOs and SSOs ................................................................... 23 2.4.6 Reasonable Growth ................................................................................................ 23 2.4.7 County-Wide or Regional Planning Efforts ............................................................. 23 2.4.8 Water, Energy and Waste Considerations ............................................................. 24 2.4.9 Suitability for Continued Use ................................................................................... 24 2.4.10 Physical Risk due to Climate Change .................................................................. 24 2.4.11 Compliance with Current Standards .................................................................... 24 2.5 FINANCIAL STATUS ........................................................................................... 25 III. Phase 2 Sewer Service Area ...................................................... 26 IV. Alternative Analysis .................................................................. 29 4.1 ALTERNATIVE 1. UPGRADE EXISTING WWTP WITH ADDITIONAL 190,000 GPD MBR PLANT ..................................................................................................................... 29 4.1.1 Description ............................................................................................................... 29 4.1.2 Cost Estimate ........................................................................................................... 30 4.1.3 Non-Monetary Factors ............................................................................................ 30 4.2 ALTERNATIVE 2. UPGRADE EXISTING WWTP WITH ADDITIONAL 250,000 GPD MBR PLANT ..................................................................................................................... 31 4.2.1 Description ............................................................................................................... 31 4.2.2 Cost Estimate ........................................................................................................... 32 4.2.3 Non-Monetary Factors ............................................................................................ 32 4.3 ALTERNATIVE 3. UPGRADE EXISTING WWTP TO FULL BUILD OUT 750,000 GPD MBR PLANT ............................................................................................................. 33 4.3.1 Description ............................................................................................................... 33 4.3.2 Cost Estimate ........................................................................................................... 34 4.3.3 Non-Monetary Factors ............................................................................................ 34

2

Delaware Engineering, D.P.C.

Village of Red Hook WWTP Upgrade and step sewer system Phase 2

Preliminary Engineering Report

4.4 ALTERNATIVE 4. NO-ACTION ALTERNATIVE ....................................................... 35 4.5 REGIONAL CONSOLIDATION OPPORTUNITIES ................................................... 35 V. Summary and Comparison of Alternatives ............................... 36 5.1 COMPARISON OF FEASIBLE ALTERNATIVES ....................................................... 36 5.2 LIFE-CYCLE COST ANALYSIS ............................................................................. 37 VI. Recommended Alternative ......................................................... 37 6.1 BASIS OF SELECTION ......................................................................................... 37 6.2 COST ESTIMATE ................................................................................................. 38 6.3 PROJECT SCHEDULE AND NEXT STEPS ............................................................... 38 6.4 ENVIRONMENTAL REVIEW, PERMITS AND APPROVALS ...................................... 39 VII. Engineering Report Certification ........................................... 39 VIII. Smart Growth ............................................................................ 40

List of Appendices:

Appendix A NRCS Soil Reports Appendix B NY Heritage Program Determination/Environmental Resource Mapper Appendix C IPaC Consultation Appendix D FEMA Flood Maps Appendix E Hydraulic Grade Line Analysis Appendix F SPDES Permit Appendix G Photographs Appendix H EDU Count and Charges (April 2023) Appendix I Operation and Maintenance Budget 2023/2024 Appendix J Septic Tank Technical Data Sheets Appendix K Cost Estimates

Appendix L WWTP Upgrade Alternative Drawings

Appendix M Proposed Service Area and Collection System Map

Appendix N Engineering Report Certification

3

Delaware Engineering, D.P.C.

Village of Red Hook WWTP Upgrade and step sewer system Phase 2

Preliminary Engineering Report

I. Executive Summary

The Village of Red Hook is a community located in northern Dutchess County, along the eastern shore of the Hudson River, in the Central Hudson region of New York State. The entire Village and portions of the surrounding Town are currently served by a municipal water supply; however, public wastewater treatment has only just been established within portions of the Village. The remaining properties within the Village are served by on-site treatment systems that are known to be substandard or failing, polluting the Village’s water supply.

The Village is considered a Potential Environmental Justice Area, and as such, its citizens can be disproportionally impacted by failing septic systems and polluted public water supplies. The Village has recognized the need to protect the environment, potable water supply and the health and safety of its citizens.

Phase 1 of the Village’s wastewater project included purchasing a private wastewater treatment plant rated for 25,000 gpd. The Village expanded the treatment capacity to 75,000 gpd by constructing a new wastewater treatment plant in 2023. The Phase 1 sewer service area connected the commercial and residential properties along Route 9 and Route 199.

This engineering report covers Phase 2 of the Village’s wastewater system. The proposed alternatives consider equipment/process upgrades, reuse or replacement and the construction of a new wastewater treatment plant along with the expansion of the existing collection system. Alternatives were evaluated based on capital improvement costs, lifecycle costs, constructability, operation and maintenance considerations and property owner burden.

The proposed alternative adds nearly 170 properties and expands the total treatment capacity to 300,000 gpd allowing for additional interconnections. The total probable cost for the proposed work is $19.5M. To finance the project, the Village will need to pursue all available funding options.

4

Delaware Engineering, D.P.C.

Village of Red Hook WWTP Upgrade and step sewer system Phase 2

Preliminary Engineering Report

II. Project Background and History

2.1 SITE INFORMATION

2.1.1 Location

The Village of Red Hook (Village) is in the Town of Red Hook and northern Dutchess County, New York along the eastern shore of the Hudson River, in the Central Hudson Region of New York State. The Village is just over 1 square mile in size and is bisected by Route 9 running north and south and Route 199 running east and west.

The wastewater treatment plant (WWTP), owned, operated, and maintained by the Village, is in the southwestern portion of the Village, off US Route 9 and O’Callaghan Lane. The WWTP discharges to a sub tributary of the Saw Kill, a NYS Department of Environmental Conservation (DEC) Class C(T) stream, through Outfall 001 (41° 59’ 29” N, 73° 53’ 05” W). A USGS topographic location map depicting the WWTP location is included below ( Figure 2 ).

According to 2021 Census data estimates, the community has a median household income (MHI) of $88,482, population of 1,921 and a family poverty rate of 4.3%. The WWTP currently serves approximately 127 developed properties (150 hook-ups) and an additional 15 undeveloped lots within the Village.

==> picture [346 x 225] intentionally omitted <==

Figure 1. Village of Red Hook Existing Sewer Service Area

5

Delaware Engineering, D.P.C.

Village of Red Hook WWTP Upgrade and step sewer system Phase 2

Preliminary Engineering Report

==> picture [471 x 609] intentionally omitted <==

Figure 2. Village of Red Hook USGS Quadrangle Location Map

6

Delaware Engineering, D.P.C.

Village of Red Hook WWTP Upgrade and step sewer system Phase 2

Preliminary Engineering Report

2.1.2 Geologic Conditions

There are no unique geologic features within the Village. The area has gently rolling to moderately hilly topography with fast draining coarse sand and gravel. According to the NRCS Custom Soil Resource Report for the WWTP site, the land is comprised of Canandaigua silt loam (Ca) and Haven-Urban land complex (Hf). The Village is made up of over 10 different soil types, summarized in the table below. Appendix A contains the NRCS Soil Surveys for the WWTP site and the entire Village.

Table 1. Village of Red Hook Soil Characteristics

7

Delaware Engineering, D.P.C.

Village of Red Hook WWTP Upgrade and step sewer system Phase 2

Preliminary Engineering Report

Bedrock Geology of the Village is Austin Glen Formation (Oag). More information on the composition of the area is shown in the table below.

Surficial Geology of the Village includes the following:

• Kame Deposits (k), including coarse to fine gravel and sand, kames, eskers, kame terraces kame deltas, ice contact or ice cored deposition, with lateral variability in sorting, texture and permeability, it may be firmly cemented with calcareous cement.

• Till (t), including Glacial till, is the dominant overburden throughout. It also contains variable texture and usually poorly sorted sand-rich diamect which was deposited beneath glacier ice.

It is not anticipated that geologic conditions will be negatively impacted by the WWTP upgrade project. The elimination of additional substandard septic systems and seepage pits will have many environmental, health and safety benefits.

2.1.3 Environmental Resources

Waterbodies: Several streams/rivers are located in and around the Village which is in the Lower and Middle Hudson River Drainage Basin. The WWTP discharges to a Tributary of the Saw Kill Creek (PWL 1301-0085), a NYSDEC Class C(T) stream at the point of discharge. There are no other classified waterbodies within the Village. The Saw Kill as a whole is a NYSDEC Class B(T), C(T) and C stream with no use impairments.

The Rhinebeck Kill and tributaries (1301-0210) are located just south of the Village along Old Farm Road. The Rhinebeck Kill is a NYSDEC Class C stream. It is best used for fishing, which is considered stressed due to pH.

According to the Environmental Resource Mapper, there are no Mussel Screening Streams or Ponded Waters within the Village. The Saw Kill Creek, located in the Town of Red Hook

8

Delaware Engineering, D.P.C.

Village of Red Hook WWTP Upgrade and step sewer system Phase 2

Preliminary Engineering Report

is a NYSDEC Mussel Screening Stream and a classified as Class B(T) in that section of the waterbody.

There are no Coastal Areas or Designated Inland Waterways near the Village. The project is not located within a designated river corridor under the Wild, Scenic and Recreational Rivers program.

The Village is located within the Lakes Kill-Saw Kill (020200061104) NYS Hydrologic Unit Code (HUC)12. Dutchess County is part of the Hudson River Basin and also the Housatonic River basin in Connecticut. Most surface drainage in the area flows to the Hudson River through creeks and streams. The Saw Kill and Stony Creek drain the majority of the Town and Village of Red Hook.

It is not anticipated that nearby waterbodies will be negatively impacted by the WWTP upgrade project. The elimination of additional substandard septic systems and seepage pits will have many environmental, health and safety benefits. The Village of Red Hook will work closely with NYSDEC and other applicable agencies to ensure that waterbodies are protected throughout the life of the project.

Wetlands: There are no Regulatory Tidal Wetlands near the Village. NYSDEC Freshwater Wetlands and Check Zones can be found throughout the Village, including on the existing WWTP parcel. NWI Classified Wetlands can also be found throughout the Village, including the existing WWTP parcel.

It is not anticipated that nearby wetlands will be negatively impacted by the WWTP upgrade project. The elimination of additional substandard septic systems and seepage pits will have many environmental, health and safety benefits. The Village of Red Hook will work closely with NYSDEC, US Army Corps. Of Engineers (ACOE) and other applicable agencies to ensure that wetlands are protected throughout the life of the project.

9

Delaware Engineering, D.P.C.

Village of Red Hook WWTP Upgrade and step sewer system Phase 2

Preliminary Engineering Report

==> picture [450 x 319] intentionally omitted <==

Figure 3. Village of Red Hook Wetlands Map

Aquifers: According to NYSDEC data, there are no Primary Aquifers near the Village. The Village is located over a principal aquifer. This sole source aquifer has been shown to be negatively impacted by substandard septic tanks located throughout the Village.

It is not anticipated that aquifers will be negatively impacted by the WWTP upgrade project. The elimination of additional substandard septic systems and seepage pits will have many environmental, health and safety benefits. The Village will work closely with NYSDEC and other applicable agencies to ensure that aquifers are protected throughout the life of the project.

Endangered Species: There are no Critical Environmental Areas, Significant Natural Communities or National Natural Landmarks near the Village. Rare Plants and/or Rare Animals may occur in the northern portion of the Village. A NY Heritage Program Determination for the project areas is included as Appendix B .

10

Delaware Engineering, D.P.C.

Village of Red Hook WWTP Upgrade and step sewer system Phase 2

Preliminary Engineering Report

According to the US Fish and Wildlife Service (FWS) Information for Planning and Consultation (IPaC) online application ( Appendix C ), the following species may be found in the Village:

• Indiana Bat (E)

• Northern Long-Eared Bat (E)

• Monarch Butterfly (C)

• Bald Eagle

• Golden Eagle

It is not anticipated that endangered or threatened species will be negatively impacted by the WWTP upgrade project. The elimination of additional substandard septic systems and seepage pits will have many environmental, health and safety benefits. The Village of Red Hook will work closely with NYSDEC, US FWS, ACOE and other applicable agencies to ensure that species are protected throughout the life of the project.

Archeologically Sensitive Areas: According to NY SHPO CRIS online mapping application, there are no Historic Districts or Building Districts within the Village. While the WWTP is located outside of Archaeologically Sensitive Areas, the majority of the Village is located within those sensitive areas. The WWTP site and sewer service area went through a consultation with NY State Historic Preservation Office (SHPO) in 2016 (16PR00149) and many of the Village streets were included in a Phase 1A/1B archaeological survey when the water system was installed in 2012 (12SR61052).

It is not anticipated that archaeological resources will be negatively impacted by the WWTP upgrade project. The Village will work closely with NY SHPO to ensure that archaeological resources are protected throughout the life of the project.

Agricultural Districts: According to the Dutchess County Agricultural District Viewer, small portions of the Village are in an agricultural district (DUTC020). These areas occur on the outskirts of the Village. The WWTP site is not located in the vicinity of any agricultural districts or agricultural resources.

It is not anticipated that agricultural lands will be negatively impacted by the WWTP upgrade project. The elimination of additional substandard septic systems and seepage pits will have many environmental, health and safety benefits. The Village of Red Hook will

11

Delaware Engineering, D.P.C.

Village of Red Hook WWTP Upgrade and step sewer system Phase 2

Preliminary Engineering Report

work closely with applicable agencies to ensure that important agricultural resources are protected throughout the life of the project.

2.1.4 Floodplain Considerations

The WWTP site is not subject to flooding and is located outside of flood prone areas as shown in Figure 4 below. There is a small area in the northern portion of the Village that is located in Zone AE and the Regulatory Floodway. Base Flood Elevations (BFE) in that area are 183 feet. Appendix D contains FEMA flood maps for the entire Village.

==> picture [451 x 349] intentionally omitted <==

Figure 4. Village of Red Hook WWTP FEMA Flood Map

It is not anticipated that flood prone areas will be impacted by the WWTP upgrade project. The Village will work closely with FEMA and other applicable agencies to ensure that infrastructure is protected throughout the life of the project and all project aspects meet NYS Community Risk and Resiliency Act (CRRA) guidance where applicable.

12

Delaware Engineering, D.P.C.

Village of Red Hook WWTP Upgrade and step sewer system Phase 2

Preliminary Engineering Report

2.1.5 Impacts to Environmental Justice Areas and Disadvantaged Communities

The Village of Red Hook is comprised of a large Potential Environmental Justice Area (PEJA), as shown in Figure 5 below. There are no Disadvantaged Communities (DAC) in the immediate vicinity. The proposed project will not have adverse impacts on any PEJAs or DACs. The elimination of substandard septic systems and seepage pits will have many environmental, health and safety benefits, especially to the low income and minority populations found in PEJAs.

==> picture [469 x 362] intentionally omitted <==

Figure 5. Village of Red Hook PEJA and DAC Map

2.2 OWNERSHIP AND SERVICE AREA

2.2.1 Outside Users

There are no existing/required inter-municipal or industrial agreements. The WWTP serves only sewer users within the Village of Red Hook sewer service area.

13

Delaware Engineering, D.P.C.

Village of Red Hook WWTP Upgrade and step sewer system Phase 2

Preliminary Engineering Report

2.2.2 Industrial Discharges

There are no industrial discharges associated with the WWTP.

2.2.3 Hauled Waste

The Village is responsible for sludge removal at the WWTP and in each individual septic tank and grease trap. Sludge is trucked off-site by a sludge pumping and hauling contractor.

2.2.4 Population Trends and Growth

According to 2021 Census data estimates, the Village of Red Hook has an MHI of $88,482, population of 1,921 and a family poverty rate of 4.3%. Dutchess County has an MHI of $87,112, population of 296,012 and a family poverty rate of 5.8%. The following population trends and growth were compiled using data obtained from the US Census Bureau for the Village of Red Hook and Dutchess County. Population data from 1970 to 2020 was analyzed to estimate the population for each year up to the year 2060, or an approximate period of probable usefulness (PPU) of 30 years.

Table 3. Village of Red Hook Population Growth

The sewer system does not serve the entire Village. There are currently 150 sewer hook-ups, which include 127 developed properties and 15 undeveloped properties. A map of the

14

Delaware Engineering, D.P.C.

Village of Red Hook WWTP Upgrade and step sewer system Phase 2

Preliminary Engineering Report

current sewer service area is included above ( Figure 1 ). The project proposed herein would expand on the existing sewer service area and increase treatment capacity at the WWTP.

Anderson Commons Development: The Anderson Commons project has been in development for about 10 years. It includes 51 residences and one commercial building. The residences would include a mix of multifamily and single-family homes on traditional lots. The area is located in the southeastern corner of the Village, below Fisk Street. Any plans for development will be subject to review by the Village Planning Board. Population growth has been estimated for the Anderson Commons Development and is shown in the table below.

Table 4. Anderson Commons Population Growth

1.Assumes average household size of 2.36 persons for the Village of Red Hook

38 Cookingham Lane Development: This parcel has been cleared for the development of much needed affordable housing. About 90% of the land will be set aside into a conservation easement. Around 12 acres will be set aside for a 40-unit affordable/workforce housing development. This land will be purchased by a private developer. Any plans for development will be subject to review by the Village Planning Board. Population growth has been estimated for the Cookingham Lane Development and is shown in the table below.

• 1.Assumes average household size of 2.36 persons for the Village of Red Hook

Ross Development: This infill development project is anticipated to create 40 market rate apartment units.

15

Delaware Engineering, D.P.C.

Village of Red Hook WWTP Upgrade and step sewer system Phase 2

Preliminary Engineering Report

2.3 EXISTING FACILITIES AND PRESENT CONDITION

2.3.1 General Description and History of Major System Components

WWTP: The original WWTP was built in 2006 to serve the Red Hook Commons, a senior housing complex, located within the Village. The original plant was a 25,000 gpd package activated sludge plant with flow equalization, sand filtration and UV disinfection, although, it was only treating between 6,000 to 13,000 gpd. The original WWTP still serves Red Hook Commons and only receives flow from Red Hook Commons. The WWTP is operated by C3ND Enviro Inc., a third-party operating company.

During evaluations of the original WWTP, it was found that treatment is inefficient and although it is only 18 years old, many of the processes and equipment do not work to the fullest extent and most have reached the end of their useful life early. The following deficiencies have been noted:

• Sand filters are original and need to be re-built or rehabbed. The sand media has reached the end of its useful life. The underdrains no longer drain properly.

• One of the two aeration trains has a dead spot in the corner. The diffusers have reached the end of their useful life and require replacement.

• The equalization pumps clog with rags frequently.

• Grease build-up is often found at the pump station and there are no mixers or other equipment employed to eradicate the problem. Grease build-up interferes with the floats.

• The anoxic tank mixers have been out of service for at least 10 years. Currently, potable/movable mixers are used.

• Neighboring property owners complain about sewage odors from the WWTP parcel. Mitigation may be needed at the outfall and surrounding area.

==> picture [366 x 160] intentionally omitted <==

Figure 6. SPDES Permit Process Flow Diagram (applies to both existing WWTPs)

16

Delaware Engineering, D.P.C.

Village of Red Hook WWTP Upgrade and step sewer system Phase 2

Preliminary Engineering Report

The 10-acre WWTP parcel was purchased/conveyed by/to the Village in 2018 and a 50,000 gpd activated sludge package plant was added to the site, directly adjacent to the original WWTP. The WWTP currently meets all regulatory requirements and design standards. This WWTP appears to be functioning well. The newer 50,000 gpd WWTP contains the following:

• Flow Meter

• EQ Tank

• Surge Tank

• Extended Air Activated Sludge Treatment

• Secondary Clarification

• Sand Filtration Treatment

• UV Disinfection

• Sludge Holding Tank

• Back-Up Generator

• Odor Control

==> picture [471 x 306] intentionally omitted <==

Figure 7. WWTP Design Drawings

17

Delaware Engineering, D.P.C.

Village of Red Hook WWTP Upgrade and step sewer system Phase 2

Preliminary Engineering Report

Because the collection system is a septic tank effluent pump (STEP) low pressure sewer system, there is no need for headworks or primary treatment at the WWTP. Both WWTPs are currently in service and discharge to the same Outfall (001).

Sanitary Sewer Collection System: There are currently 150 sewer hook-ups, which include 127 developed properties and 15 undeveloped properties. The sanitary sewer collection system is a STEP low pressure sewer system. Each customer has a separate septic tank with pump and individual electric service. The tanks collect solids while the liquid waste is pumped into the sewer main and eventually ends up at the WWTP. Small diameter HDPE force main piping is installed at each site and throughout the Village.

The septic tanks are pumped out on a regular basis by a private sludge hauler, coordinated and paid for by the Village. The Village owns all the infrastructure and holds an easement for maintenance of each septic tank and grease trap.

The STEP system was designed to accommodate the current service area with the ability for expansion to the rest of the Village in the future. Village restaurants also have grease traps to intercept cooking grease from entering the STEP system.

==> picture [222 x 166] intentionally omitted <==

==> picture [224 x 166] intentionally omitted <==

Figure 8. Pictures of STEP Tank and Electric Panel (Source: Red Hook STEP Poster/Flyer)

The Red Hook Commons, part of the original private sewer service area, is connected to the WWTP via gravity sewers and does not contain STEP systems or force mains. All flow from this community enters a pump station that serves as the influent pump station to the WWTP. This area discharges to the original 25,000 gpd WWTP.

18

Delaware Engineering, D.P.C.

Village of Red Hook WWTP Upgrade and step sewer system Phase 2

Preliminary Engineering Report

2.3.2 Significant Operations, and Maintenance History and Preventative Maintenance History

The original 25,000 gpd package plant has deteriorated and causes significant operational issues. The maintenance issues with the sand filter, pumps, mixers, and diffusers are beyond repair and need to be replaced.

2.3.3 Failure History and Component Limitations

The system has troubles meeting its ammonia limits on occasion. Because of this, the SPDES permit required a performance evaluation that addresses the ammonia removals.

2.3.4 Ability to Meet Current Design Standards for Treatment

The existing treatment plant needs to be upgraded to reliably meet its discharge limits. The ammonia limits are a particular issue. Oder complaints are also an issue.

The flow capacity of the treatment plant has also exceeded 90% of the design flow on various months. Since the plant has reached this threshold number and additional infill development is occurring, a capacity upgrade is needed.

2.3.5 Planned, Current, or Future Improvements Outside Project Scope

This project is Phase 2 of the Village’s plan to provide sewer service to the whole Village.

2.3.6 Security and Cybersecurity

Not Applicable. There are no security or cyber security concerns for the WWTP or collection at this time, since the WWTP is not connected to the internet.

2.3.7 Hydraulic Capacity Analysis of Existing Sewers where Expansion or

Increased Flow is Proposed

The existing low pressure sewer system was designed for a flow of 50,000 gpd but is readily expandable for this next phase of the project. The collection system consists of a network of low pressure 2-inch, 3-inch, and 4-inch mains that ultimately connect to a common 6- inch that reaches the WWTP. The network is expandable and additional 6-inch mains can be connected to the WWTP as part of this and future phases.

19

Delaware Engineering, D.P.C.

Village of Red Hook WWTP Upgrade and step sewer system Phase 2

Preliminary Engineering Report

A Preliminary Hydraulic Grade Line Analysis of the sewer system was performed in 2021 and is attached to this report ( Appendix E ). The analysis included current flows and future flows.

2.3.8 Current or Future Projects on the Same Site

This project is Phase 2 of the Village’s WWTP and sewer collection system. Ultimately, the WWTP site will be expanded to treat the flows from the whole Village.

2.3.9 SPDES Permit Conditions and Effluent Discharge Limits

The WWTP is governed by SPDES Permit NY0271420 ( Appendix F ). Historic and Current Permit limits are summarized in the tables below. The WWTP discharges to a tributary of the Saw Kill. The facility is permitted to discharge 75,000 gpd via Outfall 001, which is divided in subOutfalls 01A (50,000 gpd) and 01B (25,000 gpd). Effluent disinfection has been required all year at this facility. There are currently no phosphorus limits.

Table 6. SPDES Effluent Discharge Limits

20

Delaware Engineering, D.P.C.

Village of Red Hook WWTP Upgrade and step sewer system Phase 2

Preliminary Engineering Report

2.3.10 Publicly Owned Sewer System Identification Number

The Publicly Owned Sewer System (POSS) number for the Village of Red Hook is NY0027073 (NYCDEP).

2.3.11 Documented Compliance Issues

Because of the dense development within the Village and the presence of substandard seepage pits and septic systems, the Village’s water supply is at risk of contamination.

There are some documented compliance issues associated with the WWTP due to mechanical failures, which have caused exceedance of its ammonia limits.

2.3.12 Design Flows and Waste Loads

The WWTP discharges to a tributary of the Saw Kill. The facility is permitted to discharge 75,000 gpd via Outfall 001, which is divided in sub outfalls 01A (50,000 gpd) and 01B (25,000 gpd). Effluent disinfection has been required all year at this facility.

2.3.13 Analyses of Production Rates for Processing or Manufacturing Operations

Not Applicable.

2.3.14 Existing Energy Consumption

Energy audits are not available at this time.

2.3.15 Photographs

Photographs of the current facilities are included in Appendix G .

2.3.16 History of Damage due to Storm or Flood Impacts

There has been no damage to the system due to storm or flood impacts. The facility is located outside of flood-prone areas. The STEP sewer collection system and proposed service areas are also located outside of flood-prone areas.

21

Delaware Engineering, D.P.C.

Village of Red Hook WWTP Upgrade and step sewer system Phase 2

Preliminary Engineering Report

2.4 DEFINITION OF THE PROBLEM & NEED FOR THE PROJECT

2.4.1 Health, Sanitation, Security and Cybersecurity

The Village of Red Hook water system sources water from a shallow unconfined gravel aquifer and a deeper bedrock aquifer underlying the unconfined system. Because of the very dense development found throughout the Village, failing and substandard septic systems can be a very large threat to groundwater quality as they can introduce nitrates, viruses and bacteria into local waterways. Some of the buildings in the Village core business district are served by seepage pits only.

In order to protect the drinking water supply further, a sanitary sewer collection system was established. Phase 1 of the plan to eliminate the failing septic systems was completed in 2023 and it provides municipal sewers to the core center of the Village. Now, the Village is proposing to proceed with Phase 2 of the sewer project and provide sewer service to additional areas.

Additionally, the flow capacity of the WWTP that was constructed in Phase 1 has reached its limits due to infill development. Additional treatment capacity is needed to prevent discharge violations and water quality issues in the receiving stream.

The original 25,000 gpd package treatment plant built in 2006 has reached the end of its useful life and replacement or significant repair is needed to prevent discharge violations and water quality issues in the receiving stream.

2.4.2 Short-term Asset Needs as supported by a Capital Improvement Plan or Asset Management Plan

Not Applicable.

2.4.3 Aging Infrastructure

The original WWTP was built in 2006 and the new WWTP was built in 2023. The original WWTP has reached the end of its useful life. It has many mechanical components that are not functioning such as pumps, mixers and diffusers. The 2023 WWTP does not have any mechanical deficiencies, however, it is at its flow capacity.

22

Delaware Engineering, D.P.C.

Village of Red Hook WWTP Upgrade and step sewer system Phase 2

Preliminary Engineering Report

The existing septic systems and seepage pits throughout the Village (located outside of the current sewer service area) are over 50-years old and were built before the modern standards for on-site subsurface systems. Many systems are seepage pits without any septic tank or leach fields.

2.4.4 Need for Redundancy

The WWTP does not have the required redundancy. The original WWTP is at capacity and the plant needs some additional treatment units for redundancy.

2.4.5 Infiltration and Inflow, CSOs and SSOs

Not Applicable. The sewer system is new and there are no CSOs or SSOs. There is limited infiltration and inflow (I&I) within the system. Rain gutters and storm drains are prohibited by Village Ordinance from being connected to any STEP systems within the service area as these connections reduce the tank capacity as well as a capacity of the collection system and WWTP.

2.4.6 Reasonable Growth

As shown in section 2.2.4 above, the population of the Village, Town and County as a whole has been increasing steadily. three new developments could add over 300 persons to the already growing population. Only a portion of the Village is currently sewered and the long-term plan is to provide sewer service to the whole Village.

2.4.7 County-Wide or Regional Planning Efforts

The Joint Town and Village Comprehensive Plan (1969) specifies the extremely serious situation that dense development poses to the environment when it comes to private septic systems. The Comprehensive Plan recommends establishing a sewer district that could serve both the Village and densely developed areas in the Town of Red Hook.

The 2009 Intermunicipal Task Force Centers and Greenspaces report also specifies the need for a municipal sewer system to serve the dense development in Red Hook, discussing the need for sewers in terms of cost effectiveness and economic development.

23

Delaware Engineering, D.P.C.

Village of Red Hook WWTP Upgrade and step sewer system Phase 2

Preliminary Engineering Report

In addition, multiple engineering reports and studies have been conducted which all conclude that the Village would benefit from a municipal sewer collection and treatment system.

The Town of Red Hook is concurrently evaluating creating a new sewer district for the developed area adjacent to the Village. From a regional planning perspective, it would be more efficient for their sewer to be connected to the Village’s system and treated at the Village’s WWTP.

2.4.8 Water, Energy and Waste Considerations

No audits are available at this time.

2.4.9 Suitability for Continued Use

The facility is suitable for continued use with the current extent of the service area. If the service area were to expand, the facility would require upgrades to accommodate the increased flows.

2.4.10 Physical Risk due to Climate Change

The facility and site as a whole is not subject to sea level rise, storm surge, potential for flooding impacts or other extreme weather events.

2.4.11 Compliance with Current Standards

The existing septic systems do not comply with current standards for on-site subsurface systems. Most Village septic systems consist of a seepage tank. They do not have septic tanks or leach fields.

The WWTP and service area are in compliance with current standards. The WWTP does not have any of the following: Notice of Violation, Consent Order, Judicial or EPA Orders. All system components are generally suitable for continues use. There have been no instances where sewer users were without sewer service.

24

Delaware Engineering, D.P.C.

Village of Red Hook WWTP Upgrade and step sewer system Phase 2

Preliminary Engineering Report

The WWTP and collection system have adequate technical, managerial and financial capabilities to provide continued sewer service. A certified wastewater operator is employed to run and maintain the WWTP.

2.5 FINANCIAL STATUS

Most sewer users in the current service area are single family homes. Typical sewer usage for this system is 150 gpd per EDU. Cost per property is based on annual debt service plus operation and maintenance costs to run the system. Sewer bills are sent out quarterly along with the water bills. Current sewer use area fees per parcel and EDU counts are included in Appendix H .

The sewer system is supported by sewer utility bills of the residential and business customers. The 2023/2024 annual budget for the sewer system is included in Appendix I .

25

Delaware Engineering, D.P.C.

Village of Red Hook WWTP Upgrade and step sewer system Phase 2

Preliminary Engineering Report

III. Phase 2 Sewer Service Area

The Phase 2 service area is shown on Figure 9 below. The Phase 2 service area consists of the following land uses:

• 90 single family homes

• 48 multi-family homes

• 22 commercial properties

• 1 Manufactured housing park

• 3 infill housing developments

• Middle School

• High School

All of these properties have existing water meters. Based on water use, the twelve-month average flow was 26,021 GPD, using January 2022 through June 2024 data. The highest use properties were the High School (1,710 gpd), the Middle School (1,182 gpd), and the Colborn Trailer Park (1,267 gpd).

Based on property class (number of bedrooms, number of apartments, mixed use, etc.) and using the NYSDEC standards for estimating flows, the projected flow is 75,427 gpd.

For the purpose of designing WWTP capacity, which uses the maximum monthly flow, the flow number based on the NYSDEC standards will be used or 75,500 gpd.

Three proposed in-fill housing developments are included in the Phase 2 service area. Their estimated flows are summarized below:

• Red Hook North Development – 40 units at 12,400 gpd

• Anderson Commons – 13,700 gpd

• Ross Development – 40 units at 12,400 gpd

Additionally, the proposed Town of Red Hook sewer district is using a planning number of 50,000 gpd that could be connected to the Village’s WWTP in the future.

Based on the proposed sewer service area and the items noted above, the total future flows are summarized in Table 9 below.

26

Delaware Engineering, D.P.C.

Village of Red Hook WWTP Upgrade and step sewer system Phase 2

Preliminary Engineering Report

The existing STEP system was designed with the ability for expansion. New septic tanks will be placed at the locations of the old septic tanks so changes to building plumbing and lateral locations will not be required. Each septic tank requires a pump and electrical service. Grease traps will also be installed depending on the user type. Septic tank technical data sheets are provided in Appendix J .

Sludge disposal will be required and will be the responsibility of the Village. Sludge from the WWTP and septic tanks will be trucked off-site.

Table 10 below shows a summary of the cost estimate for the collection system. Expanded cost estimates for each alternative are included in Appendix K .

Table 10. Collection System Cost Estimate

27

Delaware Engineering, D.P.C.

Village of Red Hook WWTP Upgrade and step sewer system Phase 2

Preliminary Engineering Report

==> picture [408 x 629] intentionally omitted <==

Figure 9. Existing and Proposed Sewer Service Area

28

Delaware Engineering, D.P.C.

Village of Red Hook WWTP Upgrade and step sewer system Phase 2

Preliminary Engineering Report

IV. Alternative Analysis

Existing conditions, service life and data review were considered when developing the alternatives described below. Priority was given to components which has the highest potential impact on the WWTP and collection system ability to provide adequate service to existing and future users. Material longevity, process importance, system capacity and cost analyses were considered.

4.1 ALTERNATIVE 1. UPGRADE EXISTING WWTP WITH ADDITIONAL 190,000 GPD MBR

PLANT

4.1.1 Description

Proposed Preliminary Design: Alternative 1 consists of adding one, 190,000 gpd MBR package plant unit with UV and converting the existing 25,000 gpd EA unit (original WWTP serving the Red Hook Commons) into a sludge holding tank. This would allow the Village to treat up to 240,000 gpd. The service area would be as noted in Section III above.

Impact on Existing Facility: The new MBR Package plant and new equalization tank will be located adjacent to the existing 50,000 gpd EA unit on the Village-owned parcel. There is no expected negative impacts on the existing facilities.

Outfall Configuration Concerns: The existing outfall would be increase from 8-inch to 15inch.

Land Requirements: The project will be situated on the 10-acre site that houses the current WWTPs. Expansion of the WWTP will result in some land disturbance. Construction of laterals and collection system pipes and appurtenances will take place in streets, right of ways and previously disturbed areas.

Meeting Discharge Permit Requirements: The new facility will be designed to reliable y meet all discharge permit requirements.

Water and Energy Efficiency Measures: This Alternative is aimed at creating a sustainable system for wastewater conveyance and treatment. The project benefits include considerations for high efficiency systems to mitigate energy use.

29

Delaware Engineering, D.P.C.

Village of Red Hook WWTP Upgrade and step sewer system Phase 2

Preliminary Engineering Report

4.1.2 Cost Estimate

Table 11 below shows a summary of the cost estimate for Alternative 1 . Expanded cost estimates for each alternative are included in Appendix K and drawings for each WWTP alternative are included in Appendix L .

4.1.3 Non-Monetary Factors

The elimination of substandard and failing individual septic systems and seepage pits will have profound positive impacts on the PEJA in the Village. Environmental health and safety concerns are much more prominent for low-income, minority and disadvantaged populations.

The lot where the current facilities are located has been studied and is suitable for continued use as a WWTP site. Additionally, there is ample room on the 10-acre parcel for expansion. The parcel has been previously surveyed for wetlands, endangered species and archaeologically significant areas. There is already an existing SPDES Permit for the facility.

It is anticipated that the project will be treated as Type I Action during the SEQR review process and a Coordinated Review will be conducted.

Noise levels may increase during construction, but only during normal business hours. Traffic levels may also increase during construction due to the presence of construction vehicles and equipment.

All WWTPs have the ability to produce odors. The design includes odor control measures to help mitigate impacts from odors.

30

Delaware Engineering, D.P.C.

Village of Red Hook WWTP Upgrade and step sewer system Phase 2

Preliminary Engineering Report

The project will have a beneficial impact on groundwater. Additional substandard septic systems and seepage pits will be eliminated and replaced by the Village-owned system, ensuring that the community’s water supply is protected.

4.2 ALTERNATIVE 2. UPGRADE EXISTING WWTP WITH ADDITIONAL 250,000 GPD MBR

PLANT

4.2.1 Description

Proposed Preliminary Design: Alternative 2 consists of adding one, 250,000 gpd MBR package plant unit with UV and converting the existing 25,000 gpd EA unit (original WWTP serving the Red Hook Commons) into a sludge holding tank. This would allow the Village to treat up to 300,000 gpd. The service area would be as noted in Section III above plus the flow from the proposed Town of Red Hook Sewer District.

Impact on Existing Facility: The new activated sludge package plant will be located adjacent to the existing WWTPs on the Village-owned parcel. There is no expected negative impacts on the existing facilities.

Outfall Configuration Concerns: The existing outfall would be increase from 8-inch to 15inch.

Land Requirements: The project will be situated on the 10-acre site that houses the current WWTPs. Expansion of the WWTP will result in some land disturbance. Construction of laterals and collection system pipes and appurtenances will take place in streets, right of ways and previously disturbed areas.

Meeting Discharge Permit Requirements: The new facility will be designed to reliable y meet all discharge permit requirements.

Water and Energy Efficiency Measures: This Alternative is aimed at creating a sustainable system for wastewater conveyance and treatment. The project benefits include considerations for high efficiency systems to mitigate energy use.

31

Delaware Engineering, D.P.C.

Village of Red Hook WWTP Upgrade and step sewer system Phase 2

Preliminary Engineering Report

4.2.2 Cost Estimate

Table # below shows a summary of the cost estimate for Alternative 2 . Expanded cost estimates for each alternative are included in Appendix K and drawings for each WWTP alternative are included in Appendix L .

Table 12. Alternative 2 Cost Estimate

4.2.3 Non-Monetary Factors

The elimination of substandard and failing individual septic systems and seepage pits will have profound positive impacts on the PEJA in the Village. Environmental health and safety concerns are much more prominent for low-income, minority and disadvantaged populations.

The lot where the current facilities are located has been studied and is suitable for continued use as a WWTP site. Additionally, there is ample room on the 10-acre parcel for expansion. The parcel has been previously surveyed for wetlands, endangered species and archaeologically significant areas. There is already an existing SPDES Permit for the facility.

It is anticipated that the project will be treated as Type I Action during the SEQR review process and a Coordinated Review will be conducted.

Noise levels may increase during construction, but only during normal business hours. Traffic levels may also increase during construction due to the presence of construction vehicles and equipment.

All WWTPs have the ability to produce odors. The design includes odor control measures to help mitigate impacts from odors.

32

Delaware Engineering, D.P.C.

Village of Red Hook WWTP Upgrade and step sewer system Phase 2

Preliminary Engineering Report

The project will have a beneficial impact on groundwater. Additional substandard septic systems and seepage pits will be eliminated and replaced by the Village-owned system, ensuring that the community’s water supply is protected.

4.3 ALTERNATIVE 3. UPGRADE EXISTING WWTP TO FULL BUILD OUT 750,000 GPD MBR

PLANT

4.3.1 Description

Proposed Preliminary Design: Alternative 3 consists of building the WWTP for full build out of the Village and the adjacent Town Sewer District. Adding three, 250,000 gpd MBR package plant units each with UV and converting the existing 25,000 gpd EA unit and the existing 50,000 gpd EA unit into a sludge holding tanks. This would allow the Village to treat up to 750,000 gpd. The service area would be all of the Village plus the proposed adjacent Town Sewer District.

Impact on Existing Facility: There is no expected negative impacts on the existing facilities. Outfall Configuration Concerns: The existing outfall would be increase from 8-inch to 15inch.

Land Requirements: The project will be situated on the 10-acre site that houses the current WWTPs. Expansion of the WWTP will result in some land disturbance. Construction of laterals and collection system pipes and appurtenances will take place in streets, right of ways and previously disturbed areas.

Meeting Discharge Permit Requirements: The new facility will be designed to reliable y meet all discharge permit requirements.

Water and Energy Efficiency Measures: This Alternative is aimed at creating a sustainable system for wastewater conveyance and treatment. The project benefits include considerations for high efficiency systems to mitigate energy use.

33

Delaware Engineering, D.P.C.

Village of Red Hook WWTP Upgrade and step sewer system Phase 2

Preliminary Engineering Report

4.3.2 Cost Estimate

Table 13 below shows a summary of the cost estimate for Alternative 3 . Expanded cost estimates for each alternative are included in Appendix K and drawings for each WWTP alternative are included in Appendix L ..

Table 13. Alternative 3 Cost Estimate

4.3.3 Non-Monetary Factors

The elimination of substandard and failing individual septic systems and seepage pits will have profound positive impacts on the PEJA in the Village. Environmental health and safety concerns are much more prominent for low-income, minority and disadvantaged populations.

The lot where the current facilities are located has been studied and is suitable for continued use as a WWTP site. Additionally, there is ample room on the 10-acre parcel for expansion. The parcel has been previously surveyed for wetlands, endangered species and archaeologically significant areas. There is already an existing SPDES Permit for the facility.

It is anticipated that the project will be treated as Type I Action during the SEQR review process and a Coordinated Review will be conducted.

Noise levels may increase during construction, but only during normal business hours. Traffic levels may also increase during construction due to the presence of construction vehicles and equipment.

All WWTPs have the ability to produce odors. The design includes odor control measures to help mitigate impacts from odors.

34

Delaware Engineering, D.P.C.

Village of Red Hook WWTP Upgrade and step sewer system Phase 2

Preliminary Engineering Report

The project will have a beneficial impact on groundwater. Additional substandard septic systems and seepage pits will be eliminated and replaced by the Village-owned system, ensuring that the community’s water supply is protected.

4.4 ALTERNATIVE 4. NO-ACTION ALTERNATIVE

While this Action would not result in a capital project or increased sewer rates, the NoAction Alternative would leave the densely developed areas of the Village vulnerable to septic system and seepage pit failure, which could lead to potable water contamination. The PEJA located within the Village would be particularly impacted by the continued environmental pollution and seepage into the Village’s drinking water source.

The No-Action Alternative does not carry a capital cost, but due to the environmental, health and safety needs, and the desires of the community, this Alternative is not explored further.

4.5 REGIONAL CONSOLIDATION OPPORTUNITIES

By allowing the Town of Red Hook proposed sewer district to connect to the Village WWTP, the two municipalities would be cooperating and consolidating the wastewater treatment for the two communities.

35

Delaware Engineering, D.P.C.

Village of Red Hook WWTP Upgrade and step sewer system Phase 2

Preliminary Engineering Report

V. Summary and Comparison of Alternatives

5.1 COMPARISON OF FEASIBLE ALTERNATIVES

There are multiple ways which the overall objective of increased capacity of the WWTP and an expanded sewer service area can be achieved. Below is a summary table of all technically feasible alternatives evaluated in this engineering report, identifying difference, pros and cons and costs.

36

Delaware Engineering, D.P.C.

Village of Red Hook WWTP Upgrade and step sewer system Phase 2

Preliminary Engineering Report

5.2 LIFE-CYCLE COST ANALYSIS

A life-cycle cost analysis was performed to better compare the true cost of each viable alternative. Alternative 3 is not viable at this time because of the substantial cost. End user costs were compiled using two scenarios: with and without outside funding. The results are tabulated below.

Table 15. Life Cycle Cost Analysis

VI. Recommended Alternative

6.1 BASIS OF SELECTION

The Village of Red Hook is fortunate to have the asset of a public waste treatment system to support the residents and businesses of the community. The need to upgrade the WWTP is evident due to the environmental health and safety concerns related to failing and substandard septic tanks and seepage pits located throughout the Village. This report evaluated alternatives for upgrading the existing WWTP to increase flows and expand the userbase.

After an extensive alternative analysis, Alternative 2 has been selected as the preferred alternative for WWTP upgrades. It meet the current operational and regulatory needs of the community and provides the most value in terms of regulatory compliance, operational efficiency, growth and longevity. This alternative is readily implementable and

37

Delaware Engineering, D.P.C.

Village of Red Hook WWTP Upgrade and step sewer system Phase 2

Preliminary Engineering Report

utilizes common construction equipment, techniques and technologies. Appendix M depicts an overall map for the Recommended Alternative.

The proposed project is aimed at creating a sustainable system for wastewater conveyance and treatment. The project benefits include considerations for high efficiency systems to mitigate energy use. Moreover, sustainability for sewer treatment is only achievable if costs to users are affordable.

6.2 COST ESTIMATE

While the costs of investing in a project can be daunting, these costs should be kept in perspective and weighed against long-term operating costs and the sustainability of both the sanitary sewer system and the public water system. The recommended project costs are summarized in the table below. These recommended upgrades satisfy all of the immediate needs while remaining cost effective.

Table 16. Recommended Alternatives Cost Estimate

6.3 PROJECT SCHEDULE AND NEXT STEPS

The timeline below summarizes the action dates for the identified recommendations:

This engineering report is being prepared for the submission to the NYSEFC for listing on the 2025 Intended Use Plan (IUP).

38

Delaware Engineering, D.P.C.

Village of Red Hook WWTP Upgrade and step sewer system Phase 2

Preliminary Engineering Report

6.4 ENVIRONMENTAL REVIEW, PERMITS AND APPROVALS

It is anticipated that the proposed project will be a Type I Action under SEQR and the Village will act as Lead Agency in a coordinated review. SEQR has already been conducted for the 2016 WWTP and collection system project.

Environmental review is an exercise in balancing the realities of the need for capital construction projects to meet the demands of aging infrastructure, regulatory requirements and economic investments against potential consequences of the project’s construction and operation. Given the circumstances, the project evaluated throughout this report offers a reasonable range of practicable mitigation measures that when implemented, will reduce or eliminate negative potential environmental impacts.

A project such as this may require multiple permits and approvals from various involved agencies. The permits and approvals that are anticipated for the proposed action are listed in the table below.

Table 17. Permits and Approvals

VII. Engineering Report Certification

During the preparation of this Engineering Report, Delaware Engineering, DPC, studied and evaluated the cost and effectiveness of the processes, materials, techniques, and technologies for carrying out the proposed project. This Engineering Report has been signed and sealed by a professional engineer licensed to practice engineering in the state of New York. A signed Engineering Report Certification included with this report ( Appendix N ). The following standards were used where practical and appropriate:

1. Recommended Standards for Wastewater Facilities – Policies for the Design, Review, and Approval of Plans and Specifications for Wastewater Collection and Treatment Facilities (AKA 10 State Standards)

39

Delaware Engineering, D.P.C.

Village of Red Hook WWTP Upgrade and step sewer system Phase 2

Preliminary Engineering Report

2. Recommended Standards for Water Works

3. TR-16 Guides for the Design of Wastewater Treatment Works – New England Interstate Water Pollution Control Commission

4. New York State Stormwater Management Design Manual

5. New York State Design Standards for Intermediate Sized Wastewater Treatment Systems Statewide and Lake George Design Standards

6. New York State Flood Risk Management Guidance for Implementation of the Community Risk and Resiliency Act

7. American Water Works Association Manual M6, Water Meters – Selection, Installation, Testing, and Maintenance, Fifth Edition

8. 6 NYCRR Part 750 2.10

9. NYSEFC/NYSDEC Engineering Report Outline Appendix D: Additional Considerations for Specific Technologies and Project Types

VIII. Smart Growth

The proposed project will comply with the New York State Smart Growth Public Infrastructure Policy Act to the extent practicable. The project will use, maintain and improve existing infrastructure. While the need to upgrade the WWTP is evident due to the age of the facility and the state of deterioration, technologies and approaches to upgrade the treatment system are widely available. The project will upgrade, reuse and replace various components of the WWTP and incorporate best available technology and energy conservation practices.

40

Delaware Engineering, D.P.C.