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Home My WebLink AboutSP-23-036 - Supplemental - 0024 Berard Drive (5)ECI Berard Drive Facility K&S Properties, LLC 24 Berard Drive, South Burlington July 28, 2023 Page 1 of 3 PROJECT NARRATIVE The ECI Berard Drive Facility is an existing site used for the storage, recycling and disposal of materials for ECI’s construction projects, as well as storage of construction equipment. The site was initially permitted in LD 99-01 as a 10-acre fill site. It is currently permitted by the State to operate as a Categorical Disposal Facility for the disposal of up to 3,200 tons per year of concrete, asphalt, brick, and road, bridge and highway construction debris. Disposal of materials is minimized as much as possible in order to preserve the capacity of the site. Concrete debris generated from construction projects is processed and disposed of on site after the rebar has been removed and the concrete broken into smaller pieces. When possible, other construction materials which are suitable for fill, such as gravel or brick, are processed and disposed of on site. Materials stockpiled and stored on site typically include soil, crushed stone, processed gravel, concrete debris, and asphalt pavement millings. The millings are recycled and reused as pavement or pavement subbase. Construction equipment and storage trailers are stored in the southwestern corner of the site. Construction materials such as pipes and concrete structures are also occasionally stored on site for an upcoming project. The project is applying for:  Alteration of Existing Grade approval for continued placement of fill on site. Proposed limits extending to the northern and western property line setbacks. Proposed finished grade to match the elevation of the “upper” southern portion of the site and also the elevation of Berard Drive, creating an open flat area with 2:1 side slopes along the eastern limits of the site.  Contractor’s Yard approval to continue operations on the site for the storage, recycling and disposal of construction materials, as well as storage of construction equipment.  Access approval for the continued use of the existing southern drive as a second point of access for the site for dump trucks and light duty trucks. The proposed fill area limits, locations of existing materials stockpiles and existing southern access drive with proposed changes are shown on sheet C-1.2. The site is located within an Airport Approach Zone and has received an FAA Determination of No Hazard. A copy of the letter has been included in the Site Plan application. Existing Parcel Information: The existing parcel is ±7.7 acres, which are the remaining lands of the original 10-acre parcel after 2.3 acres were conveyed to VELCO in 2012, see Map Slide 557, Page 2. The parcel is abutted on the north by the VELCO parcel and substation, on the east by two wooded and undeveloped parcels, on the south by two existing commercial lots, and on the west by Berard Drive. With the exception of the Movable Peaks commercial lot to the south, the site is screened by existing vegetation along its boundaries with the remaining abutting parcels and Berard Drive. The existing boundary between the project parcel and the Movable Peaks parcel was created as part of a boundary line adjustment in 2004, see Map Slide 433. ECI Berard Drive Facility K&S Properties, LLC 24 Berard Drive, South Burlington July 28, 2023 Page 2 of 3 As part of the boundary line adjustment, an agreement was made that ECI would repair and stabilize the eroding bank behind the Movable Peaks building. In exchange, ECI would be allowed to use the area to place fill until it was brought up in elevation to match the existing parking lot to provide more usable space on the lot for Movable Peaks. At this point, it appears that the terms of the agreement have been fulfilled and ECI will remove any material stockpiles or equipment located on the Movable Peaks parcel. Boulders or equivalent objects will be placed along this shared boundary line so that it is demarcated and visible in the field. Natural Resources & Impacts: There are several natural resources located along the northeastern limits of the parcel, including the Winooski River Corridor, a class II wetland and 50’ wetland buffer, 100-year floodplain, and Habitat Block. The locations of the class II wetland and 50’ wetland buffer are based on a wetland delineation performed by Arrowwood Environmental on June 27, 2023. The locations of the River Corridor, 100- year floodplain and Habitat Block are based on VCGI mapping information. The existing site, as defined by the location of the existing concrete barriers, affects portions of the River Corridor, 50’ wetland buffer, Habitat Block, and 100-year floodplain in the northeastern corner of the site. The existing concrete barriers were originally placed to mark the limits of fill when it was initially being placed in this area of the site. The River Corridor impact is ±180 sq. ft from the existing fill and concrete barriers. The existing fill, concrete barriers and stone spillway impact ±2,790 sq. ft. of the 50’ wetland buffer, ±800 sq. ft. of the Habitat Block, and ±1,650 sq. ft. of the 100-year floodplain. The 100-year floodplain impacts are based on the existing elevations in this area. The mapped limits of the 100-year floodplain which are shown on the plans do not accurately reflect the existing elevations on the site. The Base Flood Elevation for the 100-year floodplain adjacent to the project parcel is approximately 204.5 feet, based on the attached FEMA FIRM Map No. 50007C0256D. The northeastern area of the site has not been active for many years and there are no proposed changes to the site in this area. The project proposes to preserve an ±800 sq. ft. wooded area adjacent to the Habitat Block for impact mitigation. Because this area of the site is inactive and is fully revegetated, the project proposes leaving the existing fill, concrete barriers and stone spillway in their current locations to avoid potentially causing greater disturbance to the natural resources in this area from the heavy machinery and equipment required to remove them than if they were to remain in place. Stormwater: The site has been covered by Low-Risk Stormwater Permit 5362-9020 and subsequent renewals since 2007. Stormwater runoff from the “lower” northern portion of the site is either collected by a catch basin which outlets to a stone outfall near the 50’ wetland buffer, or travels overland via sheet flow along existing vegetation to an existing settling pond with stone spillway. Stormwater runoff from the “upper” southern portion of the site travels overland via sheet flow along either existing vegetation or an existing vegetated swale into an existing settling pond with stone spillway. Existing gravel berms located along the perimeter of the top of the banks are used for erosion prevention from stormwater runoff. A damaged section of the gravel berm located in the northern portion of the site has been repaired. The existing settling pond will be cleaned out and sediment build up removed. ECI Berard Drive Facility K&S Properties, LLC 24 Berard Drive, South Burlington July 28, 2023 Page 3 of 3 Upon completion of filling operations, stormwater runoff would either be collected and treated on site if possible using a practice similar to the existing settling pond with stabilized stone outfall, or connected into the existing catch basins and storm pipes along Berard Drive. Vehicle Traffic: The site typically generates an estimated traffic volume of 10 to 20 dump trucks per day entering and leaving the site between 7am and 5pm. Using a conservative measure of 20 trucks per day produces an average of two trucks per hour coming in and out of the site throughout the day. Based on an estimated 20 dump trucks per day, plus 2 light duty employee trucks, the site typically generates an estimated 44 total vehicle trip ends (2 trips x 20 dump trucks + 2 trips x 2 light duty trucks) between 7am and 5pm, and generates six PM Peak Hour trip ends between 4pm and 5pm (2 trips x 2 dump trucks + 1 trip x 2 light duty trucks). Depending on the amount of materials generated by a particular project, vehicle traffic entering and leaving the site can occasionally increase beyond the typical volume of 10 to 20 dump trucks per day. However, this temporary increase in vehicle traffic would have minimal effect on the PM Peak Hour between 4pm and 5pm, since activities at ECI’s construction sites and the Berard Drive facility are typically winding down their operations during this time of the day. Southern Access Drive: At the existing southern access drive, the project proposes minor clearing along the eastern limits of the Berard Drive right-of-way in order to improve the sight distance as much as possible, while still maintaining existing vegetative screening. The project proposes placing a “Trucks Entering” warning sign 500 feet south of the existing drive, and to limit the type of vehicles using the southern drive to only light duty trucks and dump trucks. The existing northern drive would be used for accessing the site with larger vehicles such as lowbed delivery vehicles or other large articulating trucks. These proposed changes for the existing southern access drive are shown on Sheet C-1.2. Page 1 of 8 Looking towards Berard Drive from end of existing southern access drive. Page 2 of 8 Looking southerly along Berard Drive from existing southern access drive. Page 3 of 8 Looking northerly along Berard Drive from existing southern access drive. Page 4 of 8 Recycled asphalt and concrete debris stockpiles located on the “upper” southern portion of site. Page 5 of 8 Processed gravel and soil stockpiles located on the “upper” southern portion of site. Page 6 of 8 Looking northerly along ex. gravel drive at the “lower” northern portion of site. Page 7 of 8 Looking southerly from end of existing northern access drive at the “upper” southern portion of site. Page 8 of 8 Looking southerly at the “upper” southern portion of the site and at the gravel berms located along the perimeter of the “lower” northern portion of the site. Mail Processing Center Federal Aviation Administration Southwest Regional Office Obstruction Evaluation Group 10101 Hillwood Parkway Fort Worth, TX 76177 Aeronautical Study No. 2023-ANE-3410-OE Page 1 of 5 Issued Date: 07/17/2023 Ken Pidgeon K&S Properties, LLC P.O. Box 2187 South Burlington, VT 05407 ** DETERMINATION OF NO HAZARD TO AIR NAVIGATION ** The Federal Aviation Administration has conducted an aeronautical study under the provisions of 49 U.S.C., Section 44718 and if applicable Title 14 of the Code of Federal Regulations, part 77, concerning: Structure:Construction and Demolition (C&D) Landfill ECI Berard Drive Facility Location:South Burlington, VT Latitude:44-29-08.98N NAD 83 Longitude:73-10-12.79W Heights:280 feet site elevation (SE) 15 feet above ground level (AGL) 295 feet above mean sea level (AMSL) This aeronautical study revealed that the structure does not exceed obstruction standards and would not be a hazard to air navigation provided the following condition(s), if any, is(are) met: It is required that FAA Form 7460-2, Notice of Actual Construction or Alteration, be e-filed any time the project is abandoned or: _____ At least 10 days prior to start of construction (7460-2, Part 1) __X__ Within 5 days after the construction reaches its greatest height (7460-2, Part 2) Based on this evaluation, marking and lighting are not necessary for aviation safety. However, if marking/ lighting are accomplished on a voluntary basis, we recommend it be installed in accordance with FAA Advisory circular 70/7460-1 M. This determination is based, in part, on the foregoing description which includes specific coordinates, heights, frequency(ies) and power. Any changes in coordinates, heights, and frequencies or use of greater power, except those frequencies specified in the Colo Void Clause Coalition; Antenna System Co-Location; Voluntary Best Practices, will void this determination. Any future construction or alteration, including increase to heights, power, or the addition of other transmitters, requires separate notice to the FAA.This determination includes all previously filed frequencies and power for this structure. If construction or alteration is dismantled or destroyed, you must submit notice to the FAA within 5 days after the construction or alteration is dismantled or destroyed. Page 2 of 5 This determination does include temporary construction equipment such as cranes, derricks, etc., which may be used during actual construction of the structure. However, this equipment shall not exceed the overall heights as indicated above. Equipment which has a height greater than the studied structure requires separate notice to the FAA. This determination concerns the effect of this structure on the safe and efficient use of navigable airspace by aircraft and does not relieve the sponsor of compliance responsibilities relating to any law, ordinance, or regulation of any Federal, State, or local government body. If we can be of further assistance, please contact Scott Desmarais, at (404) 305-6429, or roger.s- ctr.desmarais@faa.gov. On any future correspondence concerning this matter, please refer to Aeronautical Study Number 2023-ANE-3410-OE. Signature Control No: 589577035-593585050 ( DNE ) Mike Helvey Manager, Obstruction Evaluation Group Attachment(s) Case Description Map(s) Page 3 of 5 Case Description for ASN 2023-ANE-3410-OE Request Determination of No Hazard for an existing Construction & Demolition Landfill and fill site. Page 4 of 5 TOPO Map for ASN 2023-ANE-3410-OE Page 5 of 5 Sectional Map for ASN 2023-ANE-3410-OE