Whiteface Mountain Unit Management Plan
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APPENDIXU DRAFT CONSTRUCTION POLLUTION PREVENTION PLAN 420 DRAFT* CONSTRUCTION STORMWATER POLLLUTION PREVENTION PLAN for WHITEFACE MOUNTAIN SKI CENTER 2004 UMP UPDATE Prepared in Accordance With New York State Department ofEnvironmental Conservation SPDES General Permit for Storm Water Discharges from Construction Activities That Are Classified as "Associated With Construction Activity", General Permit GP-02-0ls *DRAFT VERSION FOR UMP/SEQRA REVIEW PURPOSES ONLY FINAL VERSIONS TO BE SUBMITTED FOR COVERAGE UNDER GP-02-01 November 2002 421 DRAFT VERSION FOR UMP/SEQRA REVIEW PURPOSES ONLY FINAL VERSIONS TO BE SUBMITTED FOR COVERAGE UNDER GP-02-01 OWNER AND CONTRACTOR CERTIFICATION CPPP for Whiteface Mountain 2002 UMP Update I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry ofthe person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best ofmy knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. Signed: Name: Title: Date: CONTRACTOR'S CERTIFICATION I certify under penalty of law that I understand the terms and conditions of the general National Pollutant Discharge Elimination System (NPDES) permit that authorizes the storm water discharges associated with industrial activity from the construction site identified as part of this certification. Signature For Responsible for Date: Date: Date: 1 422 DRAFT VERSION FOR UMP/SEQRA REVIEW PURPOSES ONLY FINAL VERSIONS TO BE SUBMITTED FOR COVERAGE UNDER GP-02-01 CONSTRUCTION POLLUTION PREVENTION PLAN (CPPP) SITE DESCRIPTION Project Name Whiteface Mountain Owner Name The Olympic Regional and Location: 2004 UMP Update and Address: Development Authority, (Latitude, Longitude, Whiteface Mountain 216 Main St. or Address) Ski Center, Route 86, Lake Placid, NY 12946 Wilmington NY Permits Local Site Plan Review Subdivision Building State Wetlands (Art 24) Stream(Art 15) Other Federal Wetland Nationwide Individual Contractor is responsible for compliance with all permits Other None Description: (Purpose The following activities are proposed for the five year period covered and Types ofSoil by the UMP. Increase the amount ofdownhill ski trails on the Disturbing Activities mountain from approximately 18.06 miles of alpine ski trails to 20.26 miles. This includes trail improvements for the following trails approved in the 1996 UMP but not yet completed: Cloudspin, Empire, Upper Mackenzie, Upper Wilderness, Upper Parkway, and Lower Thruway. Installation ofsnowrnaking piping during trail construction. Increase lift capacity including lengthening the existing lift at Mixing Bowl and relocating bottom terminal at Bear. Relocation ofmid- station lodge, construct new 5,000 sf Kid's Center (Easy Acres) building, expansion ofNYSEF building, relocation and expansion of Fox Pole Barn and Lot 5 Pole barn and Don Straight building, and construct new grooming equipment maintenance building. Construct new lot #5 parking area. Perform drainage system improvements. Annually routine maintenance activities may result in limited soil disturbance. Runoff Coefficient: Pre-construction weighted CN is approximately 75 (affected area site). Site Area: Whiteface Mountain Ski Center Intensive Use Area covers a total of 2,910 acres. Approximately 7% or 211.4 acres presently has been developed for ski trails and lifts. Approximately 29.8 acres are proposed to be affected by ski trail construction and widening, the proposed activities that would require the great majority of soil disturbance. 2 423 DRAFT VERSION FOR UMP/SEQRA REVIEW PURPOSES ONLY FINAL VERSIONS TO BE SUBMITTED FOR COVERAGE UNDER GP-02-01 Sequence ofMajor Activities: 1. Establish Limits ofDisturbance. Work areas shall be clearly defined by appropriate means. This may include measures such as flagging tape or paint marks on trees at the limits of clearing for ski trails and lifts, construction fencing around building sites, marked stakes installed in the ground for areas such as the Parking Lot #5, or other suitable methods to clearly define the limits outside which soil disturbing activities are not permitted. 2. Vegetation Removal. Cut trees and shrubs within defined work areas. Wherever feasible chip tree tops and smaller growth on site. 3. Install Structural Erosion Control. A. Water Bars Water bars shall be installed during construction ofski slopes and lifts in accordance with the attached specifications and details. Particular attention shall be paid to proper spacing specifications as follows: Slope(%) Water Bar Spacing (ft.) <5 125 5 to 10 100 10 to 20 75 20 to 35 50 >35 25 (Source: Guidelines for Urban Erosion and Sediment Control, USDASCS, 1997) B. Silt Fence Where appropriate, silt fence shall be installed in accordance with the attached specifications and details. Use of silt fence is appropriate where there is no concentration ofwater flowing to the barrier and where the drainage area for overland flow does not exceed Yz acre per 100 feet of fence. Additionally, maximum allowable slope lengths contributing runoff to a silt fence shall be as follows: Slope Steepness Maximum Slope Length (ft.) 2:1 50 3:1 75 4:1 125 5:1 175 Flatter Than 5: 1 200 (Source: Guidelines for Urban Erosion and Sediment Control, USDASCS, 1997) 3 424 DRAFT VERSION FOR UMP/SEQRA REVIEW PURPOSES ONLY FINAL VERSIONS TO BE SUBMITTED FOR COVERAGE UNDER GP-02-01 C. Straw Bale Dikes Straw bale dikes may be used as a substitute for silt fence ONLY where shallow depth to rock precludes the proper installation of silt fence. Installation shall be in accordance with the attached specifications and details. Straw bale dikes shall NOT be used where there is concentrated flow. Straw bale dikes shall NOT be used where more than 3 months of erosion and sediment control is required unless bales are replaced or an additional parallel row ofbales is installed prior to the original straw bales being in place for 3 months. Length of slope above the straw bale dike shall not exceed the following: Slope Steepness Maximum Slope Length (ft.) 2:1 (50%) 25 2.5:1 (40%) 50 3:1 (33%) 75 3.5:1 (30%) 100 4:1 (25%) 125 (Source: Guidelines for Urban Erosion and Sediment Control, USDASCS, 1997) D. Wattles Fiber-wrapped wattles constructed of straw, coconut fiber (koir) or rice straw may also be used in place ofsilt fences where shallow depth to rock precludes the proper installation of silt fence. Wattles shall be installed in accordance with manufacturer's specifications, an example of which is attached. Length of slope above wattles shall not exceed the lengths provided for straw bale dikes above. E. Stabilized Construction Entrances Stabilized construction entrances consisting of a stabilized pad of aggregate shall be constructed in accordance with the attached specifications and details at any point where traffic will be entering or leaving an unstabilized construction site to a public right-of-way, street or parking area. All sediment spilled, dropped or washed onto public rights-of-way must be removed immediately. All sediment shall be prevented from entering storm drains, ditches, or watercourses. 4. Grub Stumps. Stumps shall be grubbed only after structural erosion control is in place. Wherever possible, stumps shall be left in place or cut to grade in order to hold soil in place. 5. Prepare Final Grades. Grade disturbed areas to create final as-built elevations. Earthwork activities are designed to be localized and not involve large quantities ofcuts and fills. The need to stockpile soil or transport bulk materials across the site is not anticipated. Should the need arise to temporarily stockpile soils during grading operations, stockpiles shall be surrounded with one ofthe temporary structural erosion control measures described above. Trenches excavated for installation ofutilities shall make use oftrench blocks where trenches 4 425 DRAFT VERSION FOR UMP/SEQRA REVIEW PURPOSES ONLY FINAL VERSIONS TO BE SUBMITTED FOR COVERAGE UNDER GP-02-01 are located on slopes that are in excess of 10% and trenches will remain open for more than one construction day. Sand bags or rock check dams one to two feet tall shall be installed at 100 foot intervals along the bottom ofthe open section oftrench. 6. Stabilize Disturbed Areas: Stabilization shall be put in place as soon as practical after final grades are established. Stabilization shall be put in place within seven days of establishing final grades. Depending on the type ofarea being disturbed, stabilization may take the form ofvegetation (ski trails and lifts), concrete (building footprints and walkways), gravel (parking areas), rip rap (culvert outfalls), or other similar means to prevent soil erosion after construction is complete. More details on acceptable vegetation stabilization measures are provided below. 7. Remove Temporary Structural Erosion Controls. Silt fences and other erosion and sediment controls shall be removed only after the areas which they are serving have become permanently stabilized by vegetative or other means. Controls Erosion and Sediment Controls Stabilization Practices Structural and vegetation practices to be implemented to prevent erosion and sediment transport are in accordance