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HomeMy WebLinkAboutSD-23-07 - Supplemental - 0600 Spear Street (53) 180 Market Street, South Burlington, Vermont 05403 | 802-846-4106 | www.southburlingtonvt.gov TO: 600 Spear FJT, LLC c.o. Lucy Thayer, TCE FROM: Marla Keene, Development Review Planner SUBJECT: #SD-23-07 600 Spear Street Final Plat Comments DATE: May 9, 2023, updated May 12, 2023 The purpose of this memo is to provide technical review comments on the compliance of the proposed 34-unit development at 600 Spear Street. Comments are based on the plans and materials submitted up to April 18, 2023. These comments are those from various City departments and this May 12, 2023 amendment now includes a comprehensive review of the Land Development Regulations. Comments of Department of Public Works 1. The applicant is informed, and understands, that this pump station and force main will remain privately owned. The city will not take responsibility for a force main that runs under the interstate. 2. The applicant must coordinate with CWD and the City of South Burlington to design a connection to the path on Spear street that meets ADA standards and reasonably accommodates the CWD transmission main in this location. 3. Anywhere a path or sidewalk ends at a curb and goes into a street or parking lot, there needs to be a detectable warning surface. These are missing at: o The path crossing the north-south “New City Street” o The northern terminus of the sidewalk on the east side of the north-south street (I can’t tell if there is a tip down here so if there isn’t, the detectable warning surface isn’t needed) 4. The path on the north side of the east-west “New City Street” should be shown as continuing through the driveway. 5. It’s not clear what the proposed condition is but there should be tip downs and detectable warning surfaces near the hatched areas next to handicap accessible parking spaces. Comments of Water Department 1. Plans must include a note stating: “All water lines and appurtenances shall be installed in accordance with the Champlain Water District Specifications and Details for the Installation of Water Lines and Appurtenances, current edition.” 2. Record Drawings prepared by a VT licensed Professional Engineer shall be provided to the South Burlington Water Department in pdf. and Auto-CAD format. Drawings shall include ties to all gate valves and curb stops to sub-meter accuracy. 3. Refer to and specify CWD Specifications for C-900 installation requirements including the installation of a tracing wire with independent termination boxes. All ferrous materials incorporated in the installation of the PVC pipe shall be polyethylene encased. 4. Refer to CWD Specifications and Details for Service line and curb stop information and correct details accordingly. Sheet Specific Comments-Plan Sheet C3-02 5. Suggest installing bollards at each 4” Flushing hydrant for protection. 6. Service lines less than 4” shall be copper up to the curb stop. CTS may be used beyond the curb stop into the building. 7. Install 8”x4” reducer and 4” gate valve, all fostered to southern line cross. 8. Install 4” gate valve on water line to 4” flushing hydrants just past last service connections. 9. Maintain minimum 18” separation between water services and mains and wastewater lines at points of crossings. Additional comments are provided directly on Sheet C3-02, attached. Comments of City Arborist 1. Recommend moving trees along the entry road and parking lot farther off the road/parking lot to provide more rooting area(the further the better) 2. White Pine is not a good choice along the parking area, particularly if planted that close to pavement. Susceptible to salt damage, prone to limb breakage as the trees mature 3. Some of the Asiatic hybrid elms are superior to ‘Princeton’ Elm in terms of improved structure and less susceptibility to disease pressure. Accolade, Triumph, Regal and New Horizon are some examples 4. Planting Detail-specify the use of webbing straps instead of wire in garden hose for staking Comments of Stormwater Section 1. Sheet C3-03: Pipe from DMH 5 to Gravel Wetland 4 conflicts with solar field fence. Please ensure clear access to entire length of pipe for future maintenance. 2. Sheet C8-402: a. Gravel wetland detail: 6” perforated subdrain is called out as wrapped in fabric. Please remove fabric detail to minimize clogging. b. Perforated riser detail: please provide justification for fabric around perforated riser. 3. Greater than 50% of the existing on-site impervious is being redeveloped. Under Section 13.05.3.b of the LDRs, the City requires all on-site impervious be treated if redevelopment or reconstruction exceeds 50% of the existing impervious. Please provide treatment for the entirety of the on-site impervious. 4. Please provide HydroCAD model and modeling results for review. 5. EPSC: please consider using the footprints of the gravel wetlands as temporary sediment basins during construction. Comments of Fire Department 1. Provide pavement marking and signage plan, including no parking signs on east west segment of public road. Comments on Site 1. The areas on the plat add up to 8.62 acres, while the existing acreage is indicated on the plan as 8.63 acres. Please provide a table of lot areas, building, and lot coverages, existing and proposed. Table on subdivision application is for existing coverages only, and site plan application information is not filled out. 2. Regarding extension of roadways to the north and south, please extend the southern portion of the proposed sidewalk to extend to the southern driveway in anticipation of future development. I am confirming that a detectable warning strip need not be installed at this time. 3. It is unclear whether the provided draft legal documentation for the planned public road includes the necessary portions of the adjacent property. Further, it does not appear you have provided a written agreement to the proposed legal documents by the adjoining property owner. 4. Landscaping budget has not yet been reviewed. However, based on preliminary plat review, it does not seem there will be issues with compliance with landscaping budgets. 5. Snow storage areas include a number of locations on proposed trees (see Sheet C10-02). There appears to be additional area of snow storage at the eastern edge of the southern parking area, and we recommend that the snow storage coincident with trees should be removed. While it ultimately is the applicant’s responsibility to maintain landscaping in a vigorous growing condition, we believe the conditions of approval should be such that the applicant is likely to be able to meet this responsibility. 6. Regarding timeline for construction of the interior common space, the proposed timeline does not result in any useability of the interior common area, a major feature of this development, until after home construction is complete. We will be recommending the Board require the proposal to be modified so that portions of the common area are completed proportionally with the homes. 7. Please propose a timeline for construction of the trail behind the easternmost buildings relative to the number of homes. 8. I am awaiting confirmation the proposed light fixtures are consistent with City standards. 9. City policy is to limit illumination except at street intersections. Unless there is a particular reason for the non-intersection fixtures, please reduce the number of street fixtures. 10. Please note all new buildings are subject to the Stretch Energy Code pursuant to Section 3.15: Residential and Commercial Building Energy Standards of the LDRs. In addition, new buildings must comply with the City Heating Ordinance. These standards apply to buildings for which zoning permits have not yet been applied, regardless of which LDR they were approved under. 11. From some drawings, it appears there is one inverted-U type bicycle parking space at the metal building to remain. Please confirm and coordinate drawings.