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 2
Cannonsville Project Status Review 3
Cannonsville - Existing Facilities Put in Service in 1964 Watershed Drainage Area: •450 sq. mi. Impoundment: •13 miles long •Storage capacity of 300,990 Water Supply Intake acre-feet or 95.7 BG at normal (5 mi. upstream) 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 Existing Intake Structure Release Spillway: Works •Ungated •Split level Spillway 800 feet long Emergency Gate Tower •Lower: 240 feet long at elevation 1,150 •Upper: 560 feet long at elevation 1,158.1 feet 4
Cannonsville – Proposed Project Facilities For purposes of this license application, the City selected the Description of Turbines largest station hydraulic capacity of 1,500 cfs based on the Feature Size information provided by turbine vendors that had been contacted, which is based on a configuration consisting of four # of Turbines/Runner 2 @1760 millimeters Diameter (mm) (5.7 ft) turbines. 2 @ 890 mm (2.9 ft) The existing conduit leading to the low-level release works will Turbine Type Horizontal Francis 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 Rated Net Head 122 feet (37.2 meters) direction and will be tapped with four individual wye connections Min/Max Turbine 2 @ 50-125 cfs to convey flow to individual steel penstocks leading to four Hydraulic Capacity 2 @ 250-625 cfs turbines. Max hydraulic cap. 1,500 cfs An approximately 168-foot long by 54-foot wide powerhouse will Min operating cap. 50 be located adjacent to the existing low level release works cfs (40% of 125 cfs) building. Maximum Electrical 2 @ 1.185 MW Capacity 2 @ 5.855 MW Equipment within the powerhouse will include four turbines and Total elec cap: 14.08 generators, switchgear, generator phasing cabinets, control MW panels, hydraulic power unit, cooling water equipment, station Rated Speed 2 @ 257.1 rpm battery and charger, oil/water separator sump with pump, and 2 @ 450 rpm 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. 5
Cannonsville Development Cannonsville- 4 turbines, 1,500 cfs, 14.08 MW 6
Cannonsville Development – Underground Electric Option 7
Cannonsville Development 8
New Powerhouse Rendering 9
Erosion Study 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 10
Cannonsville Erosion Control Measures 11
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) 12
Cannonsville Viewsheds 13
Aesthetic Study – Cannonsville Viewsheds C1 Top of Dam C2 14 14
Aesthetic Study – Cannonsville Project Rendering Rendering 15 15
Aesthetic Study – Cannonsville Project Rendering Rendering 16 16
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 17
Socioeconomic Study 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 CO 2 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 18
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 19
Cannonsville Site Conditions 20
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 21
Preliminary Summary of Fish Field Surveys 22 22
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