FUDR Annual Meeting October 15, 2013

Cannonsville Hydroelectric Project FERC No. P-13287

Cannonsville

Agenda

Introductions Project Status Review

Existing Facilities Proposed Project Facilities

Re-cap of Studies Operating Regime

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Cannonsville Project Status Review

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Cannonsville - Existing Facilities

Existing Intake Structure

Release Works

Emergency Gate Tower

Put in Service in 1964 Watershed Drainage Area: •450 sq. mi. Impoundment: •13 miles long •Storage capacity of 300,990 acre-feet or 95.7 BG at normal pool (1,150 ft) Dam: •Rolled earth filled embankment •2,800 feet long •1,100 feet wide at toe | 45 feet wide at top •175 feet high – elevation 1,175 feet Spillway: •Ungated •Split level Spillway 800 feet long •Lower: 240 feet long at elevation 1,150 •Upper: 560 feet long at elevation 1,158.1 feet

Water Supply Intake (5 mi. upstream)

For purposes of this license application, the City selected the largest station hydraulic capacity of 1,500 cfs based on the information provided by turbine vendors that had been contacted, which is based on a configuration consisting of four turbines.

The existing conduit leading to the low-level release works will be bifurcated with a wye connection to a 12-foot steel diameter pipe. The 12-foot diameter pipe will run in a south to north direction and will be tapped with four individual wye connections to convey flow to individual steel penstocks leading to four turbines.

An approximately 168-foot long by 54-foot wide powerhouse will be located adjacent to the existing low level release works building.

Equipment within the powerhouse will include four turbines and generators, switchgear, generator phasing cabinets, control panels, hydraulic power unit, cooling water equipment, station battery and charger, oil/water separator sump with pump, and other related equipment.

The powerhouse walls will be cast in place concrete. One set of stoplogs will be included in the powerhouse superstructure to allow dewatering of the draft tube exit chamber.

A new 13 kV power line will be constructed from the powerhouse to a new substation, which will be connected to an existing New York State Electric & Gas Corporation 46 kV transmission line that traverses the site.

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Cannonsville – Proposed Project Facilities

Feature Size # of Turbines/Runner Diameter

2 @1760 millimeters (mm) (5.7 ft) 2 @ 890 mm (2.9 ft)

Turbine Type Horizontal Francis

Rated Net Head 122 feet (37.2 meters)

Min/Max Turbine Hydraulic Capacity

2 @ 50-125 cfs 2 @ 250-625 cfs Max hydraulic cap. 1,500 cfs Min operating cap. 50 cfs (40% of 125 cfs)

Maximum Electrical Capacity

2 @ 1.185 MW 2 @ 5.855 MW Total elec cap: 14.08 MW

Rated Speed 2 @ 257.1 rpm 2 @ 450 rpm

Description of Turbines

Cannonsville Development Cannonsville- 4 turbines, 1,500 cfs, 14.08 MW

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Cannonsville Development – Underground Electric Option

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Cannonsville Development

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New Powerhouse Rendering

NYSDEC State Pollution Discharge Elimination System General Permit for Stormwater Discharges will be obtained in an area of soil disturbance greater than 1 acre (applies to Cannonsville only). As part of this permit, a Stormwater Pollution Prevention Plan is required.

All water pumped out of the dewatered area of the tailrace will be conveyed to the sedimentation basin to contain and prevent sediment from entering the West Branch of the Delaware River

Upon completion of construction, the spoils disposal area will be graded to match the area topography and seeded

Erosion Study

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Cannonsville Erosion Control Measures

Aesthetics Study

Project areas are not visible from the reservoir because the height of dam effectively screens new structures

Due to the absence of public viewsheds, the Project will not have material adverse impacts on aesthetics

To ensure that the Project is consistent with the general character of the area: • The new powerhouse will be constructed so that its appearance is

consistent with the appearance of the existing release works building and surroundings

• New power lines will be constructed, to the extent possible, in the same location as existing power lines

• The new substation will be constructed adjacent to an existing building • Staging and spoils areas will be located primarily in areas that have been

or are disturbed (i.e., mowed grass areas rather than forested areas)

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Cannonsville Viewsheds

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Top of Dam

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Aesthetic Study – Cannonsville Viewsheds

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Rendering

Aesthetic Study – Cannonsville Project Rendering

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16 Rendering

Aesthetic Study – Cannonsville Project Rendering

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Cultural Resources Study

There are no properties listed on the State or National Register of Historic Places, or places eligible for such listing, located adjacent to the Project areas

The potential for locating intact archeological or cultural sites within the Project Areas is virtually non-existent because of the prior construction of the water supply system

Given the locations of the new facilities and equipment and the scope of the construction activities, the Project will not have a material impact on archeological or cultural resources

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Socioeconomic Study

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One-time increase in economic output in Delaware County of approximately $4 million

Approximately 59 person-years of employment in construction and

related industries during the 36 month construction period

When operating, facility expected to increase Delaware County economic activity by $2.7 million per year

When operating and generating electricity, will displace generation from higher-cost, fossil-fuel fired generation resources

Wholesale electricity prices reduced 0.7% or $0.27 per MWh annually

Reduce CO2 emissions by approximately 23,000-47,000 tons annually, depending on the type of fossil-fuel fired generation displaced

Equivalent of removing approximately 5,000-10,000 passenger vehicles from the road

Total annual estimated savings to Upstate New York of approximately $10 million

Wetlands, Wildlife, and RTE Report • Botanical Resources

Vegetative cover types in impact areas include: open fields, mixed forest, and emergent and riverine wetlands

10 invasive plant species were found in the Project areas Location of the staging areas will have limited impacts - primarily to existing mowed

fields Locations of the generator lead, substation and interconnection facilities are not

expected to cause or lead to adverse environmental impacts

• Wetlands, Riparian and Littoral Habitats Location of the new powerhouse and tailrace will result in the conversion of a low-

quality wetland to an open water area – will likely require mitigation Two other wetlands were identified in the buffer zones, but outside of impact areas Three vernal pools were identified in or adjacent to the Project areas, but outside of

impact areas

• Wildlife Numerous bird species were observed, but no nesting areas were found in the

Project areas Evidence of reptiles and amphibians were found in the Project areas, but impacts to

these species are expected to be limited as their habitats are located outside impact areas

• Rare, Threatened, and Endangered (RTE) Species Bald eagles were observed, and two nesting locations are within the project

boundary. A USFWS Take Permit and DEC Article 11 permit will be required Jefferson’s and longtail salamanders may use at least one of the vernal pools

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Cannonsville Site Conditions

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Entrainment Study

Based on the habitat/life history requirements and fish swimming speeds, entrainment is expected to be low for all species

The risk of entrainment for fry and juvenile fishes is minimal Pressure differentials between the intake structures and release works cause

fish mortality regardless of the hydropower facilities Additional intake protection measures are not needed based on the

assessment of entrainment and mortality A low level fish passage is not practical due to the pressure differential and

nature of the existing facilities A surface level fish passage is not desirable due to mixing warmwater with

downstream coldwater fishery and its incompatibility with the habitat of the species of most interest (e.g., trout)

Field studies being conducted to validate study and establish a baseline

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Preliminary Summary of Fish Field Surveys

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Modeling of turbine operation for the License Application is based on the current Flexible Flow Management Program with Operations Support Tool (FFMP-OST) • Estimated annual output of approximately 42,000 MWh

Project will be operated in accordance with the requirements of the applicable operating protocol agreed to by the parties to the 1954 Supreme Court Decree (Decree Parties), including the maximum discharge rate specified therein • Water available for generation at Cannonsville will be comprised of

conservation releases, directed releases, and water that would otherwise spill to the extent that such releases are consistent with the discharge mitigation releases as established in the applicable operating protocol

• The City does not propose to modify the magnitude, timing, frequency or duration of downstream flow releases as a result of hydropower operations

• Maximum discharge rate pursuant to FFMP-OST is 1,500 cfs

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Operating Regime

For More Information

Anthony J. Fiore Director, Office of Energy

718.595.6529 afiore@dep.nyc.gov

View DEP’s website: www.nyc.gov/dep Look under A to Z Go to “H” for Hydro

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