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HomeMy WebLinkAboutSD-22-10 - Supplemental - 0500 Old Farm Road (4) 1 1 of 29 TO: South Burlington Development Review Board FROM: Marla Keene, Development Review Planner SUBJECT: #SD-22-10 500 Old Farm Road Final Plat Application DATE: October 6, 2022 Development Review Board meeting PROJECT DESCRIPTION Final plat application #SD-22-10 of O’Brien Eastview, LLC to create a planned unit development of six existing parcels currently developed with three single family homes and a barn and totaling 102.6 acres. The development is to consist of 155 homes plus additional inclusionary offset units in single family, duplex, and three-family dwellings on eleven (11) lots totaling 23.9 acres, eighteen (18) commercial development lots totaling 39.8 acres, and 25.2 acres of undeveloped or recreational open spaces, 500 Old Farm Road. PUBLIC NOTICE The applicant has notified Staff that they inadvertently used an outdated abutters list for the initial warning and thus some of the newer owners in the adjacent O’Brien Hillside neighborhood did not receive a public meeting notice by mail. Staff worked with the applicant to send supplemental letters on September 29, with a note indicating that an opportunity to provide public comment would take place on October 6 (less than 15 day notice) and again at a continued hearing in November. 24 VSA 4464 states “No defect in the form or substance of any requirements in subdivision (1) or (2) of this subsection shall invalidate the action of the appropriate municipal panel where reasonable efforts are made to provide adequate posting and notice. However, the action shall be invalid when the defective posting or notice was materially misleading in content.” Staff considers reasonable efforts to have been made and therefore recommends the Board proceed with the hearing as scheduled. CONTEXT The Board held hearings on this application on July 19 and September 7, 2022. On those dates, the Board reviewed what has changed since preliminary plat, connection to Tilley Drive, the sidewalk on Old Farm Road, lot coverage, general site plan review standards, and the applicant’s proposed plan for the C1-LR zoning district. Remaining topics newly included herein include the detailed site plan review standards of 14.07, PUD standards, inclusionary housing standards, and miscellaneous final details such as stormwater, lighting and other utilities. The applicant has not provided revised materials since the September 7 hearing. Instead, the applicant intends to submit a set of revised materials incorporating all the Board’s feedback after initial review of all criteria is complete. Therefore Staff recommends the Board proceed by reviewing these staff comments with the Board and then continue the hearing to a future date to allow time for the applicant to prepare revised materials and Staff to review those materials fully. #SD-22-10 Staff Comments 2022-10-06 2 2 of 29 Plans and documents included in this packet are ordered to mirror this staff report and are limited to items Staff is highlighting for the Board’s attention. The September 7 packet included a full set of submitted materials Staff reminds the Board that this project is subject to the LDR effective December 28, 2020 since those were the regulations in effect when a complete preliminary plat application was submitted. For lots being created in the C1-LR and I/O district for which no site plan has yet been submitted, the regulations in effect at the time of application will apply, modified by any approvals that the Board may elect to grant at this stage of review. The remaining paragraphs of this Context section of this report are unchanged from the July 19, 2022 Staff Comments. The project is located in the Residential 12, Commercial 1-LR, Residential 1-PRD, and Mixed Industrial- Commercial Zoning Districts. The project also lies in Traffic Overlay Districts Zone 1 and 3 as well as the Transit Overlay District. The fraction of the project in each of the applicable zoning districts, and the allowable coverage in each district, follows. Zoning District Fraction of Project Area Allowable Lot Coverage R1-PRD 38% 30% C1-LR 23% 70% R12 1% 60% IC 38% 70% The development is subject to PUD/subdivision standards, site plan standards, and the standards of the applicable zoning districts, including allowed uses. The project is also required to provide inclusionary housing. The project contains both Class II and Class III wetlands, though only Class III wetlands and their buffers are proposed to be impacted. The project is adjacent to the Hillside phase of the O’Brien development, referred to as MP1 and Hillside herein. Hillside includes 490 homes, plus bonus inclusionary units, of which two buildings containing approximately 81 units have as yet only received preliminary plat approval. As noted in the project description, this proposed final plat consists of the following elements: • 155 homes in single family, duplex, and three-family dwellings. These homes are centered along Old Farm Road. This represents an increase of nine (9) units over what was approved at preliminary plat • eighteen (18) commercial development lots totaling 39.8 acres. This is 4.2 acres and one lot fewer than was proposed at preliminary plat. These development lots are located in the C1-LR and I-C zoning districts, which have different allowed uses but similar dimensional standards. No development of these lots is proposed at this time, but the road network serving these lots and a framework for development of the lots in the C1-LR, including connectivity to the currently proposed residential phase, is presented for approval. Staff proposes to discuss these areas at a later hearing date. • 25.2 acres of spaces of undeveloped and recreational spaces, including spaces used for stormwater treatment. #SD-22-10 Staff Comments 2022-10-06 3 3 of 29 COMMENTS Development Review Planner Marla Keene and Planning Director Paul Conner (“Staff”) have reviewed the plans submitted on June 10 and August 22, 2022 and offer the following comments. Numbered items for the Board attention are in red. UPDATES FROM SEPTEMBER 7, 2022 HEARING C1-LR Zoning District The Board deliberated on the applicant’s presentation of September 7 and directed Staff to provide feedback, including that there must be a minimum of two stories in the C1-LR. Staff recalls the Board’s discussion focusing on the buildings transitioning from the proposed 155 homes to the C1- LR district. The applicant has asked whether other buildings could be allowed to be one story or to have the appearance of two stories. 1. Staff recommends the Board discuss whether they will allow certain buildings to be one story or to have the appearance of two stories. Staff considers the Board may choose to limit such an allowance to buildings under a certain footprint, or buildings on the interior of the C1-LR district without frontage on Kennedy, Kimball, Old Farm or O’Brien Farm Road. TOPICS NOT PREVIOUSLY DISCUSSED AT FINAL PLAT STAGE OF REVIEW  14.07 SPECIFIC REVIEW STANDARDS In all Zoning Districts and the City Center Form Based Codes District, the following standards shall apply: A. Access to Abutting Properties. The reservation of land may be required on any lot for provision of access to abutting properties whenever such access is deemed necessary to reduce curb cuts onto an arterial or collector street, to provide additional access for emergency or other purposes, or to improve general access and circulation in the area. Business Park North Lot 4: Staff understood there to be existing dedicated pedestrian easement across the northern side of Business Park Lot 4 as a “placeholder” for a future trail network. Based on the provided plat plans, it does not seem that this easement in fact exists. The Applicant asked where the future trail network is supposed to go. The purpose of the easement on this and adjoining lots is to, over time, create a walking path along the south side of Potash Brook and is shown on the City’s official map. The preliminary plat finding was for the applicant to include an off-road footpath across this lot. Due to designation of Lot 4 as a sensitive archaeological resource area, the applicant has removed proposed development from this lot. They have indicated in their narrative that they have provided an easement, but no such easement is shown on the provided plat plans. Staff recommends the Board direct the applicant to provide a 20-ft easement in the location of the future trail as shown on the City’s official map. Staff considers since no development is proposed, a simple easement is sufficient. See additional findings pertaining to access under 14.06B(1) and (3) and 14.06C(1) and (2) above. B. Utility Services. Electric, telephone and other wire-served utility lines and service connections shall be underground insofar as feasible and subject to state public utilities regulations. Any utility #SD-22-10 Staff Comments 2022-10-06 4 4 of 29 installations remaining above ground shall be located so as to have a harmonious relation to neighboring properties and to the site. Standards of Section 15.13, Utility Services, shall also be met. Proposed utilities are underground. Old Farm Road is currently served by overhead utility lines. The applicant is proposing to relocate the lines underground through the project area, but it does not appear provision has been made for connecting to the existing home located at 200 Old Farm Road. Staff recommends the Board require the applicant to provide for connection of the existing home to the relocated utility line as a condition of approval. The telecom cabinet on Lot 42 conflicts with the proposed driveway. Staff recommends the Board require the applicant to relocate the cabinet outside the right of way as a condition of approval. C. Disposal of Wastes. All dumpsters and other facilities to handle solid waste, including compliance with any recycling, composting, or other requirements, shall be accessible, secure and properly screened with opaque fencing to ensure that trash and debris do not escape the enclosure(s). Small receptacles intended for use by households or the public (ie, non-dumpster, non-large drum) shall not be required to be fenced or screened. No solid waste disposal areas are proposed. D. Landscaping and Screening Requirements. See Article 13, Section 13.06 Landscaping, Screening, and Street Trees. This criterion was not reviewed in detail at preliminary plat. The Board notes landscaping standards applicable to parking lots will apply to both off-street parking areas and the plans must be revised to show compliance at final plat. 13.06A Purpose [excerpt]. Street tree planting shall be required for all public streets in a subdivision or planned unit development. In evaluating landscaping, screening, and street tree plan requirements, the Development Review Board shall promote the retention of existing trees while encouraging the use of recommended plant species. The applicant has provided street tree spacing of 30-ft. The applicant has requested the Board consider allowing street tree spacing up to 40-ft. Up until this point, the Board has been reviewing the plans with the 30-ft spacing and has used those plans as the presumed backdrop for decision making. 2. The applicant has provided a plan demonstrating their proposal. Staff considers the larger spacing should still result in the feeling of a treed street when trees reach maturity, perhaps to include larger trees or more varied, rather than simply taking the same trees and spacing them farther apart. Staff recommends the Board review the alternative tree spacing plan and determine whether to accept it. 13.06B. Landscaping of Parking Areas. Except for parking spaces accessory to a one-family or two-family dwelling, all off-street parking areas subject to review by the Development Review Board, shall be curbed and landscaped with appropriate trees, shrubs, and other plants including ground covers, as approved by the Development Review Board. Sections of recessed curb are permitted if their purpose is to allow stormwater runoff from the adjacent parking area to reach stormwater collection, treatment and management infrastructure. The Development Review Board shall consider the adequacy of the proposed landscaping to assure the establishment of a safe, convenient, and attractive parking area and the privacy and comfort of abutting properties. (1) All off-street parking areas shall be landscaped around the perimeter of the lot with trees, shrubs and other plants. Perimeter planting shall be set back from the curb sufficiently to allow #SD-22-10 Staff Comments 2022-10-06 5 5 of 29 for snow storage. The purpose of perimeter planting shall be to mitigate the view of the parking lot from the public way and from adjacent uses and properties, and to provide shade and canopy for the parking lot. In some situations it may be necessary both for surveillance purposes and for the perception of safety to install the size and type of plants that leave visual access between the parking lot to the public way or other pedestrian areas. The applicable parking areas are limited to those at the barn amenity and at the dog park. Staff considers this criterion met for the barn amenity. 3. At the dog park amenity, the area where landscaping would be located is not yet programmed (will be the perimeter of the C1-LR zoning district). Staff recommends the Board determine whether to require additional landscaping at the dog park parking area. (2) In all parking areas containing twenty-eight (28) or more contiguous parking spaces and/or in parking lots with more than a single circulation lane, at least ten percent (10%) of the interior of the parking lot shall be landscaped islands planted with trees, shrubs and other plants. Such requirement shall not apply to structured parking or below-ground parking. Not applicable. (3) All interior and perimeter planting shall be protected by curbing unless specifically designed as a collection and treatment area for management of stormwater runoff as per 13.06(B)(5)(c) below. Interior planted islands shall have a minimum dimension of six (6) feet on any one side, and shall have a minimum square footage of sixty (60) square feet. Large islands are encouraged. 4. In the barn area parking, no curbing is proposed, and the sidewalk is proposed to be differentiated from the parking by using different colored gravel. Curbing is recommended for protection of both landscaping and pedestrians. Staff considers a softer option, such as curb stops or bollards, could be effective and recommends the Board direct the applicant to propose a solution. (4) Landscaping Requirements #SD-22-10 Staff Comments 2022-10-06 6 6 of 29 (a) Landscaping shall include a variety of trees, shrubs, grasses and ground covers. All planting shall be species hardy for the region and, if located in areas receiving road runoff or salt spray, shall be salt-tolerant. (b) At least one (1) major deciduous shade tree shall be provided within or near the perimeter of each parking area, for every five (5) parking spaces. The trees shall be placed evenly throughout the parking lot to provide shade and reduce glare. Trees shall be placed a minimum of thirty (30) feet apart. More than 5 trees are provided for the 17-space barn amenity therefore this criterion is met. Fewer than 5 spaces are provided at the dog park therefore this criterion is met. (c) Trees shall have a caliper equal to or greater than two and one-half (2 ½) inches when measured on the tree stem, six (6) inches above the root ball. Paring lot trees are proposed to be greater than 2 ½ inches. This criterion is met. (d) Where more than ten (10) trees are installed, a mix of species is encouraged; the species should be grouped or located in a manner that reinforces the design and layout of the parking lot and the site. Fewer than ten parking lot trees are proposed, therefore this criterion is not applicable. However, the Board typically applies this criterion to entire sites, not just parking lots. Staff considers this criterion to be met for the project as a whole. (5) Planting islands – Not applicable (6) Snow storage areas must be specified and located in an area that minimizes the potential for erosion and contaminated runoff into any adjacent or nearby surface waters. The applicant has not specified snow storage areas. However, Staff considers that since each parking area is to serve an open space, snow storage is not an issue. Snow storage for the project streets will be along the green strip between street and sidewalk, recreation path, or property line, as applicable. 13.06C. Screening or buffering. The Development Review Board will require landscaping, fencing, land shaping and/or screening along property boundaries (lot lines) whenever it determines that a) two adjacent sites are dissimilar and should be screened or buffered from each other, or b) a property’s appearance should be improved, which property is covered excessively with pavement or structures or is otherwise insufficiently landscaped, or c) a commercial, industrial, and multi-family use abuts a residential district or institutional use. The applicant requested two waivers at preliminary plat related to the requirement to screen between adjacent properties. The first is that screening between commercial and non-residential uses be allowed to be on either the residential or the commercial lot. The Board accepted this waiver request, but on more detailed review of this criterion, Staff considers no waiver to be necessary as there is no requirement as to which lot contain the screening. Utility cabinets are required to be screened with evergreens, a mix of evergreens and deciduous trees and shrubs, and/or a solid fence. The applicant has proposed screening for utility cabinets within the residential area but has not shown screening of utility cabinets in the commercial and industrial areas. Staff recommends the Board include a condition that utility cabinet screening be provided when development occurs on lots containing or adjacent to approved utility cabinets. 13.06G. Landscaping Standards #SD-22-10 Staff Comments 2022-10-06 7 7 of 29 (3) Landscaping Budget Requirements. The Development Review Board shall require minimum planting costs for all site plans, as shown in Table 13-9 below. In evaluating landscaping requirements, some credit may be granted for existing trees or for site improvements other than tree planting as long as the objectives of this section are not reduced. The costs below are cumulative; for example, a landscaping budget shall be required to show a planned expenditure of three percent of the first $250,000 in construction or improvement cost plus two percent of the next $250,000 in construction or improvement cost, plus one percent of the remaining cost over $500,000. The landscaping budget shall be prepared by a landscape architect or professional landscape designer. The required minimum landscaping value is calculated based on the cost of buildings on shared lots. Single family homes and duplexes on their own lots are not subject to minimum landscaping budget requirements. The provided landscaping value excludes the value of street trees. Staff has also excluded the value of foundation plantings for the homes from the landscaping value because the applicant has previously made the request that foundation plantings not be required to be retained in perpetuity. This is discussed below under landscaping maintenance. The applicant has provided a computation of required minimum landscaping budget and provided landscaping value. No homes on their own lot are proposed, and the computations correctly exclude street trees. The applicant has also indicated that the value of proposed plantings outside of the red line on the landscaping plan are excluded from the provided value. They do not intend to install these plantings until such time as the development occurs in those areas. The areas outside the red line include the dog park, the walking trail through the I/C zoning district, and the street trees on Potash Road. Staff notes the Board is requiring construction of the dog park be tied to construction of the residential and C1-LR areas, and is otherwise establishing its phasing. The landscaping in the dog park will be required as part of the construction of the dog park regardless of whether the applicant considers it as contributing to the required minimum landscaping budget. The required minimum landscaping value for 155 homes with a cost of $52,700,000 is $534,500. The applicant is proposing the following landscaping. Trees $526,675.00 Tree Whips $5,950.00 Shrubs $146,710.00 Perennials & Grasses $22,233.00 Total $701,568.00 Required Minimum $534,500.00 Staff considers the required minimum landscaping to be provided. The applicant has requested the Board allow the excess landscaping expenditure to be applied as credit towards future phases, and has also requested the landscaping be allowed to be provided anywhere within the PUD. Staff recommends the Board allow the excess landscaping expenditure be allowed as credit towards future phases of the O’Brien Eastview project, and that it be allowed anywhere within the PUD, so long as required landscaping standards including those pertaining to screening are met. In other words, just because the Board may permit landscaping required for construction of a building to be installed in a park, they are not required to if such an approval would result in the building site being poorly landscaped. The applicant will be required to demonstrate the requested amount of credit is available at the time of each application for which they wish to use the credit. The Board made the #SD-22-10 Staff Comments 2022-10-06 8 8 of 29 following relevant finding at preliminary plat, which Staff recommends the Board continue to hold as a finding of this final plat. Landscaping design shall result in the following criteria being met. • each lot must be adequately landscaped • each lot must have a reasonably proportionate amount of open space, with adequate landscaping • the landscaping shall not be inconsistent with the development program approved by the Board Further pursuant to landscaping in the dog park, the applicant has proposed a wooded area to remain, but has not identified specific trees or specific tree preservation measures which will be employed. Staff recommends the Board defer detailed review of the wooded area to remain until after such time as the City’s recommendations on open space ownership are available, but notes it here as an outstanding issue for later discussion. 13.06I. Landscaping Maintenance The applicant is requesting waiver of the requirement to maintain landscaping in perpetuity in the single family, duplex and three family home area currently proposed for development. The Board at preliminary plat denied this request since the applicant has not shown individual lots; all lands are proposed to be common lands. Staff notes if the applicant wishes to propose individual building lots for the single family and duplex homes, such a waiver would not be necessary as there is no requirement for minimum landscaping on single family home or duplex lots. The applicant has revised their request to be that non tree and shrub vegetation be allowed to be modified by the homeowners. Staff considers the Board may permit vegetation to be removed or replaced if it is not counted towards the required minimum landscaping budget and if the Board does not consider the landscaping to be necessary to create the type of development stipulated by the LDR and reviewed by the Board. Staff notes the applicant’s landscaping plans show vegetation around the footprints of homes that does not necessarily match the proposed foundation plantings on the provided detail sheets. 5. Staff recommends the Board discuss whether the proposed foundation plantings are necessary to create the type of development stipulated by the LDR and reviewed by the Board and determine whether to allow the applicant waiver of the requirement to maintain foundation plantings, be they woody or non-woody vegetation, in perpetuity. E. Modification of Standards. Except within the City Center Form Based Code District, where the limitations of a site may cause unusual hardship in complying with any of the standards above and waiver therefrom will not endanger the public health, safety or welfare, the Development Review Board may modify such standards as long as the general objectives of Article 14 and the City's Comprehensive Plan are met. However, in no case shall the DRB permit the location of a new structure less than five (5) feet from any property boundary and in no case shall be the DRB allow land development creating a total site coverage exceeding the allowable limit for the applicable zoning district in the case of new development, or increasing the coverage on sites where the pre-existing condition exceeds the applicable limit. At preliminary plat the applicant provided a list of 25 requested waivers. The applicant has not submitted a revised list of waiver requests therefore Staff assumes there are no changes. Some of the #SD-22-10 Staff Comments 2022-10-06 9 9 of 29 applicant’s requested waivers have been incorporated into this report as applicable, while others were determined to not be applicable at a previous stage of review. The remaining applicable waiver requests are discussed below. Residential Lot Setback waivers: At preliminary plat the Board found that they generally accepted of the configuration in the residential lots shown on the plans, but the applicant must present a simplified setback waiver request. The applicant has requested that the Board approve the development program shown including footprint lots with a minimum setback of five (5) feet. Staff considers this to be a problematic proposal for three reasons. First, the City does not recognize footprint lots. Second, the homes are depicted as being set back 10-ft or more on the provided plans. Third, the applicant is proposing a range of home types be allowed to be built on each lot and therefore limiting the applicant to what is shown will necessarily limit their available offerings. 6. Staff instead recommends the Board provide a waiver within the residential area of the front setback requirement to 10-ft, with open porches or decks less than 12-ft in depth allowed to encroach into the front setback up to 5-ft. Staff recommends a waiver within the residential area of side and rear setbacks to 5-ft. Staff also recommends the Board include a condition that for street-facing garages there be enough room between the face of the garage and the sidewalk to park a full size car without overhanging the sidewalk, or that there be clearly not enough room (ie a car would be in the street). Landscape Screening: The applicant is requesting a waiver of the requirement to screen between residential and commercial lots. The applicant clarified that the intent of this request is that they intend to provide screening, but would prefer to be allowed to provide it on either the residential lots or commercial lots. The Board at preliminary plat found the clarified waiver request to be acceptable. Heights: The applicant is requesting a waiver of the requirement that building heights on commercial lots be no more than one story higher than adjacent residential buildings. The Board found at preliminary plat this requirement will be waived if the framework for the C1-LR zoning district is accepted at final plat. Porches: The applicant requests that all single family, duplex and three family homes may convert their porches to covered porches with only the issuance of a zoning permit. Porches are generally considered to be covered and constitute building footprint, while decks are uncovered and do not count as building footprint, though they do count as lot coverage. The Board directed the applicant to clarify this request at final plat. The applicant has provided the following statement. In a single-family home on its own lot, if an owner wanted to redo the roof on their porch and potentially change the roof angle or aesthetic, and screen in the porch at the same time, they would file a zoning permit on one piece of paper and it would issue. In this PUD, the Applicant wants to make sure the permits allow similar flexibility. The Applicant is worried that since a change to roofline or structure is not shown in the plans presented, a PUD amendment could be required. The Applicant is merely requesting a procedural waiver to ensure that the administrative officer can have the authority to approve and deny requests pertaining to converting decks shown on the proposed elevations to covered decks and three season rooms. This seems fairly straightforward, and will simply reduce the complexity and administration of these requests. Staff considers that redoing the roof on a porch or adding a screen is subject to a zoning permit and no waiver is needed. Staff notes that enclosing a porch to make it “three season” by adding walls would be #SD-22-10 Staff Comments 2022-10-06 10 10 of 29 a modification of the approved building and would require review against the allowances of the PUD, such as the Board will adopt. This would not necessarily require PUD amendment but may. Process Waivers: The applicant requests that sketch plan and preliminary plat not be required for subsequent applications within the PUD, and that site plan review be allowed instead of final plat review for single buildings on single lots. The LDRs reserve the authority to grant procedural waivers to applications for master plan as described in 15.07D(2). As there is no master plan, this waiver request is not appropriate and the Board denied the request at the preliminary plat level. Staff considers that the applicant’s request is not necessarily for a waiver, but instead is for the Board to establish a procedure for review of projects within the PUD. Staff considers the Board may establish, as part of this final plat decision, that site plan review is allowed by right for single buildings on single lots. Staff considers that under the LDR applicable to this decision, all modifications of lot lines or applications involving multiple lots require subdivision review, including sketch and preliminary plat. However, since there is no vesting, any future amendments to the PUD would be reviewed under the PUD in effect at the time of application. The latest LDR has a process by which subdivision amendments (of which PUD amendments are a subset) are categorized as minor or major, which would apply to future applications within this PUD. Parking: Staff recommends the Board carry forward this preliminary plat finding as drafted. “Applicant requests a finding that parking may be permitted with only site plan and conditional use review in the context of site plan review for a building on any approved lot in the PUD.” The applicant explained they are asking to be allowed to permit shared parking on an adjacent lot when no other development is proposed on that lot. The Board notes such a configuration would not be allowed with individual site plans such as requested in waiver requests 18-20. The Board finds this to be allowed if the following additional criteria are met. • Parking must be to the sides and rear of existing or proposed buildings. • Parking without a building shall be allowed for three (3) years without a development proposal, otherwise the applicant shall be required to install buffering. A buffering plan shall be submitted at the time of application for parking on a lot not otherwise proposed to be developed, and bonding for the proposed buffer shall be provided in accordance with 15.15 at the time of zoning permit issuance for construction of the parking. Sureties: This waiver request pertains to bonding requirements. The preliminary plat finding stated that the applicant must work with City Staff, including the Director of Public Works, to develop a specific proposal for presentation to the Board at final plat. However, since preliminary plat, the applicant and Staff have had several meetings and determined that bonding requirements can be largely handled administratively and need not be reviewed by the Board. The applicant has most recently requested that the Board allow the applicant to establish separate sureties for earthwork and for infrastructure construction. Staff considers they can draft the surety language such that it does not preclude such an arrangement, which will allow Staff and the applicant to continue to develop appropriate sureties without the needs for Board review. I/C Zoning District: the applicant requests waiver of the requirement that construction in the IC zoning district be exempt from the requirements to have common elements with the remainder of the PUD. The specific standards are as follows. 14.06B. Relationship of Proposed Structures to the Site. #SD-22-10 Staff Comments 2022-10-06 11 11 of 29 (1) The site shall be planned to accomplish a desirable transition from structure to site, from structure to structure, and to provide for adequate planting, safe pedestrian movement, and adequate parking areas. (3) Without restricting the permissible limits of the applicable zoning district, the height and scale of each building shall be compatible with its site and existing or anticipated adjoining buildings. 14.06C Relationship of Structures and Site to Adjoining Area. (1) The Development Review Board shall encourage the use of a combination of common materials and architectural characteristics (e.g., rhythm, color, texture, form or detailing), landscaping, buffers, screens and visual interruptions to create attractive transitions between buildings of different architectural styles. (2) Proposed structures shall be related harmoniously to themselves, the terrain and to existing buildings and roads in the vicinity that have a visual relationship to the proposed structures. The applicant noted that the approved uses in the I/C cover a broad range, and therefore the function of the buildings may not lend themselves to matching residential structure. The Board notes this criterion does not require industrial buildings to look like single family homes, but to prevent the industrial buildings from being disharmonious with the residential buildings. The Board found at preliminary plat that there are a number of ways to meet these criteria. The presence of an intervening open space and roadway reduces the needed reliance on architectural similarity. Common elements can be complimentary without needing to be exactly the same. The site design should also support complimentary relationships. The Board denied the requested waiver at the preliminary plat stage of review. The applicant at this final plat stage of review is requesting more robust findings. Staff considers the finding to be sufficiently descriptive to establish the expectations for how these criteria will be met, and, in addition, since development on the lands within the I/C zoning district is not proposed at this time, they will be subject to the LDR in effect at the time of application. The currently effective LDR significant modifies and explains these criteria. F. Low Impact Development. The use of low impact site design strategies that minimize site disturbance, and that integrate structures, landscaping, natural hydrologic functions, and various other techniques to minimize runoff from impervious surfaces and to infiltrate precipitation into underlying soils and groundwater as close as is reasonable practicable to where it hits the ground, is required pursuant to the standards contained within Article 12. The City Stormwater Section provided the comments via email on July 8, 2022 which were included in the packet for the July 19, 2022 hearing. The applicant has not yet provided a response. Since a number of comments may have an impact on the project design, Staff recommends the Board require them to be addressed prior to closing the hearing. G. Standards for Roadways, Parking and Circulation. Standards of Section 15.12 Standards for Roadways, Parking, and Circulation shall be met. See above under transportation #SD-22-10 Staff Comments 2022-10-06 12 12 of 29  15.18A SUBDIVSION AND PLANNED UNIT DEVELOPMENT STANDARDS These criteria apply to both the portion of the project proposed for development at this time and the commercial lots proposed for subdivision but not development. (1) Sufficient water supply and wastewater disposal capacity is available to meet the needs of the project in conformance with applicable State and City requirements, as evidenced by a City water allocation, City wastewater allocation, and/or Vermont Water and Wastewater Permit from the Department of Environmental Conservation. The applicant has received preliminary water and wastewater allocation for 155 homes. The Board at preliminary plat found no allocation for the commercial lots to be necessary at this time. Staff recommends the applicant coordinate with the Department of Public Works as they develop their program for the commercial lots as there may be necessary system upgrades. The South Burlington Water Department provided comments on the water line design at preliminary plat, which Staff has reviewed and found to be incorporated into the final plat plans. Staff considers additional changes to the water system will be incidental and can be incorporated as a field change. Staff considers this criterion met. (2) Sufficient grading and erosion controls will be utilized during construction and after construction to prevent soil erosion and runoff from creating unhealthy or dangerous conditions on the subject property and adjacent properties. In making this finding, the DRB may rely on evidence that the project will be covered under the General Permit for Construction issued by the Vermont Department of Environmental Conservation. The comments of the City stormwater section included review of erosion prevention and sediment control measures. Staff recommends the Board require the EPSC comments of the City stormwater section to be addressed prior to closing the hearing. (3) The project incorporates access, circulation and traffic management strategies sufficient to prevent unreasonable congestion of adjacent roads. In making this finding the DRB may rely on the findings of a traffic study submitted by the applicant, and the findings of any technical review by City staff or consultants. 15.12F(1) The nearest signalized intersection or those intersections specified by the DRB shall have an overall level of service “D” or better, at the peak street hour, including the anticipated impact of the fully developed proposed PUD or subdivision. In addition, the level of service of each through movement on the major roadway shall have a level of service “D” or better at full buildout. The Board discussed access, circulation, and traffic management at the July 19 and September 7 meetings. Staff generally considers this criterion to be met. Specific follow-up items from the preliminary plat decision follow. • Off-site Improvements o Installation of turn lanes on Kimball Ave. At preliminary plat, the Board found the applicant must work with Staff to determine when installation of exclusive turn lanes be installed. Staff at preliminary plat recommended a framework for reservation of funds for this work such that each commercial lot contribute towards the necessary improvements that will be eventually required when sufficient trips are generated. This would allow the applicant to exclude from their bonding the cost of the off-site intersection improvements. #SD-22-10 Staff Comments 2022-10-06 13 13 of 29 The applicant is instead proposing to install turn lanes on Kimball Ave at Old Farm Road and at Potash Road at the time these intersections are constructed. BFJ’s preliminary plat recommendation was to delay installation of exclusive turn lanes until movements reach LOS E. Staff considers that premature installation of infrastructure may create higher speeds and the expectation that a high LOS will persist. If the applicant wishes to construct necessary pavement at the time of intersection construction, temporary measures like line striping or concrete barriers can be installed until such time as the turn lanes are warranted. 7. Staff recommends the Board discuss and provide DPW an opportunity to consider and provide feedback on any proposal. o Hinesburg Road and Old Farm Road. At preliminary plat, the applicant had proposed a right and left turn lane onto Hinesburg Road at Old Farm Road. It appears the applicant may no longer be proposing improvements at this intersection, though the applicant’s pavement marking plans do not cover it. 8. Staff recommends the Board confirm with the applicant that they still intend to make minor alignment and lane modifications at this intersection and require the plans to be updated to include this area. The Board at preliminary plat found that the first application for development in the commercial zoning districts, and the application that occurs every 5-years after that initial application, shall include an updated traffic evaluation if the commercial development varies from the uses included in this initial traffic study. Notwithstanding development, an updated traffic study shall be prepared after 10 years. Staff considers this condition should be reworded to specify that the traffic evaluation shall be updated concurrently with development applications in the C1-LR or IC areas at the time of first application and every 5 years thereafter. Old Farm Road and O’Brien Farm Road: The Board at preliminary plat required the applicant to provide an executable plan for a signal at Old Farm Road and O’Brien Farm Road. The applicant has provided a plan that shows a full signal. Staff recommends at this time the Board require the applicant to only install conduit sleeve as shown on the provided plan at the time the intersection is constructed. The applicant’s traffic study concludes no signal at this intersection is required, therefore Staff considers installation of conduit sleeve should be the limit of the applicant’s obligation for this intersection. Traffic Overlay District: The north end of Old Farm Road presently is in the Traffic Overlay District Zone 1. The applicant may not generate more than 15 vehicle trips per PM peak hour per 40,000 sf of development area at the Old Farm intersection without access management, additional connections between properties, and improved pedestrian and/or transit access that produces “a net benefit for traffic flow in the immediate vicinity of the project” (LDR 10.02H(1)). This calculation allows for a trip budget of 1675 pm peak hour vehicle trips. The current traffic study demonstrates the development build-out projections are consistent with the traffic overlay district. Staff considers updated traffic studies should confirm the development remains in compliance with the traffic overlay district at each subsequent phase of development. Should applicant develop a program that generates more than 1675 pm peak hour vehicle trips, they may at a future application provide a quantifiable demonstration of the increased capacity due to the relocation of Old Farm Road and installation of a signal at the Old Farm Road/Kimball Road intersection. (4) The project’s design respects and will provide suitable protection to wetlands, streams, wildlife habitat as identified in the Open Space Strategy, and any unique natural features on the site. In #SD-22-10 Staff Comments 2022-10-06 14 14 of 29 making this finding the DRB shall utilize the provisions of Article 12 of these Regulations related to wetlands and stream buffers, and may seek comment from the Natural Resources Committee with respect to the project’s impact on natural resources. The applicant has updated their plans to show wetlands and wetland buffers. The applicant has updated their wetland delineation since preliminary plat and has identified an additional Class III wetland within the IC area. The applicant is proposing to impact three Class III wetlands and their buffers for the purpose of stormwater treatment. The applicant has submitted a field delineation and wetland report as required by the LDR. 12.02E. Standards for Wetlands Protection (1) Consistent with the purposes of this Section, encroachment into wetlands and buffer areas is generally discouraged. (2) Encroachment into Class II wetlands is permitted by the City only in conjunction with issuance of a Conditional Use Determination (CUD) by the Vermont Department of Environmental Conservation and positive findings by the DRB pursuant to the criteria in (3) below. No encroachment into Class II wetlands or buffers is proposed. (3) Encroachment into Class II wetland buffers, Class III wetlands and Class III wetland buffers, may be permitted by the DRB upon finding that the proposed project’s overall development, erosion control, stormwater treatment system, provisions for stream buffering, and landscaping plan achieve the following standards for wetland protection: (a) The encroachment(s) will not adversely affect the ability of the property to carry or store flood waters adequately; (b) The encroachment(s) will not adversely affect the ability of the proposed stormwater treatment system to reduce sedimentation according to state standards; (c) The impact of the encroachment(s) on the specific wetland functions and values identified in the field delineation and wetland report is minimized and/or offset by appropriate landscaping, stormwater treatment, stream buffering, and/or other mitigation measures. The impacted wetlands were found to have low function as water storage and surface and groundwater protection/nutrient removal. The proposed impacts are for the purpose of stormwater treatment, therefore Staff considers these criteria met. 9. At preliminary plat, the Board found that the applicant must enumerate permanent and temporary wetland and wetland buffer impacts as part of the final plat application package. No numerical assessment of impacts has been provided. Staff recommends the Board require the applicant to provide areas in square feet of permanent and temporary wetland and wetland buffer impacts. (5) The project is designed to be visually compatible with the planned development patterns in the area, as specified in the Comprehensive Plan and the purpose of the zoning district(s) in which it is located. This criterion is addressed under 14.06B(1) and (3) and 14.06C(1) and (2) above. #SD-22-10 Staff Comments 2022-10-06 15 15 of 29 (6) Open space areas on the site have been located in such a way as to maximize opportunities for creating contiguous open spaces between adjoining parcels and/or stream buffer areas The applicant is proposing 18.24 acres of active or passive recreation space plus an additional 6.96 acres of undeveloped lots not proposed for use because of encumberance with wetlands or archaeologically sensitive sites. Other wetland and archaeological sites exist throughout the development and are distributed between the residential, commercial, and recreational lots. Some of the areas proposed to be left open are at the perimeter of the site adjacent to natural resource areas. Staff considers this criterion met. The Board’s preliminary plat findings discussed the design and ownership of the proposed recreational spaces as part of review of this criterion. Staff notes this could have also been reviewed under 14.06 Site Plan General Review Standards. The applicant has proposed an initial recommendation for ownership of the proposed recreational spaces. Staff and the applicant are presently meeting on this and anticipate having a recommendation for ownership at the continued hearing. Staff recommends the Board direct the applicant to include a detail of the proposed dog park fence as a condition of final plat. The Recreation and Parks Committee reviewed the project and provided comments on the preliminary plat, which were incorporated into the preliminary plat decision. (7) The layout of a subdivision or PUD has been reviewed by the Fire Chief or his designee to insure that adequate fire protection can be provided, with the standards for approval including, but not be limited to, minimum distance between structures, street width, vehicular access from two directions where possible, looping of water lines, water flow and pressure, and number and location of hydrants. All aspects of fire protection systems shall be designed and installed in accordance with applicable codes in all areas served by municipal water. This standard shall not apply to Transect Zone subdivisions. The Deputy Fire Chief reviewed the plans on August 18, 2022 and did not indicate any specific issues. (8) Roads, recreation paths, stormwater facilities, sidewalks, landscaping, utility lines and lighting have been designed in a manner that is compatible with the extension of such services and infrastructure to adjacent properties. For Transect Zone subdivisions, this standard shall only apply to the location and type of roads, recreation paths, and sidewalks. (9) Roads, utilities, sidewalks, recreation paths, and lighting are designed in a manner that is consistent with City utility and roadway plans and maintenance standards, absent a specific agreement with the applicant related to maintenance that has been approved by the City Council. For Transect Zone subdivisions, this standard shall only apply to the location and type of roads, recreation paths, and sidewalks. Detailed review of the proposed roadway network, including street trees, utilities, lane markings, lighting, signage, etc., was provided in the Staff report for July 19, 2022. Specific updates on preliminary plat findings are as follows. Street segments: The Board directed the applicant to extend road stubs to the property line as required by 15.12D. The applicant has not done so on Barn Road. Staff recommends the Board require the applicant to revise their plans to extend Barn Road to the property line. Staff notes the Director of Public Works #SD-22-10 Staff Comments 2022-10-06 16 16 of 29 had requested a turn-around in this location, but Staff alternatively suggested that the extension beyond Daniel Drive be used as a turn around. The Director accepted this suggestion, but indicated that the extreme end of Barn Road would not be plowed until such future time as it is connected to the adjacent parcel since it does not serve as access. Curb cuts: The preliminary plat approval include several conditions related to curb cuts. These comments have been addressed with the revised plans. Staff recommends the Board including a finding that the curb cuts on the approved plans are the approved curb cuts, and additional curb cuts shall not be permitted without a PUD amendment. In other words, modifications to curb cuts shall not be allowed to be reviewed as part of site plan review for individual lot development. Staff recommends the Board retain the following two preliminary plat findings as conditions of final plat approval.  There shall be a maximum of one curb cut on each side of Old Farm Road between Kimball Ave and O’Brien Farm Road.  No additional curb cuts beyond that for I/C Road, and those needed for infrastructure maintenance, onto Kennedy Drive or Kimball Avenue shall be permitted. The proposed cul-de-sac has three driveways which are proposed to be located off of it. Staff recommends the Board require the applicant to orient the driveways perpendicular to the arc of the cul-de-sac and not perpendicular to the centerline of the street. This may require adjustment of the angle of the homes as well. Further, the cul-de-sac should be signed for No Parking as it is designed to be the minimum size necessary for vehicular circulation. Sidewalks and Recreation Paths: The Board required recreation paths to be 10-ft wide, though left room for the applicant discuss site-specific exceptions with the Board at final plat. The applicant has proposed for the recreation path to be 8-ft wide through the core of the development where the triplexes are located. The Board has reviewed and accepted the bike and pedestrian design at prior hearings, therefore Staff assumes there are no concerns with this proposal. 10. The fitness trail is outlined by a dashed line on either side, with a different shading indicated inside the dashed lines on the landscape plans. Staff recommends the Board ask the applicant to identify the meaning of this line and shading on the plans, and, if it is necessary and acceptable, require it to be properly identified on the civil and landscape plans. See below screenshots. #SD-22-10 Staff Comments 2022-10-06 17 17 of 29 The site plan sheeting does not cover the dog park parking area, therefore it cannot be determined if curbing is proposed. The parking is adjacent to a sidewalk, therefore curbing is recommended. Staff recommends the Board require the applicant to demonstrate the dog park parking area is curbed. The Board included the requirement to construct a sidewalk along the eastern side of Old Farm Road from the southern terminus of the proposed rec path on the western side to Hinesburg Road in their preliminary plat review of this criterion. The Board reviewed this sidewalk design on July 19, including the Director of Public Works’ comments about maintenance, and the applicant indicated they would provide a revised plan that attempted to satisfy both the directives of the Board and the comments of the Director of Public Works. Staff anticipates the applicant will provide this revised layout for a continued hearing and will review when the applicant provides it. 11. The landscaping plans show additional lines on Old Farm Road towards the north end. Staff recommends the Board ask the applicant to identify the meaning of these lines on the plans, and, if it is necessary and acceptable, require them to be properly identified on the civil and landscape plans. See below screenshot. The sidewalk along Legacy Farm Extension must be extended to the terminus of the ROW as required by 15.12D. The Board required the applicant to revise plans throughout to ensure that sidewalks and recreation paths are aligned with one another as they cross streets and driveways. This has not been done in places, as identified in the DPW comments provided to the applicant at the July 19 hearing. The Board required the applicant to identify the surface for pedestrian connections. The applicant has indicated materials are called out in the pedestrian report. Staff notes some materials are called out on landscaping plans, but has generally been unable to locate materials on the civil drawings. Materials should be called out on the plans since the plans represent the approved condition for the project. Staff recommends the Board require the applicant to correct the plans to provide this information. 15.12D Criteria for Public and Private Roadways: The Board found that all roads with the exception of the proposed alley on Lot 32 are required to be public. The applicant has added a second alley on Lots 23 and 24. Staff recommends the Board include a condition that both alleys shall remain private. #SD-22-10 Staff Comments 2022-10-06 18 18 of 29 This section was reviewed under PP as part of 14.06 General Site Plan Review Standards. Staff considers it to be equally applicable under this criterion. The applicant is proposing an east- west easement in the I/C district, between lots 41 and 42. This easement is proposed to be 50- feet wide and is presumably to address the fact that Lots 43 and 44 otherwise have no access to a road. As a condition of approving the subdivision of land in the IC zoning district as part of this application, the Board included a preliminary plat finding that the applicant must provide this road as a ROW rather than an easement, and meet the minimum ROW width for a commercial road of 60-ft. The applicant has requested to not comply with this preliminary plat finding. Commercial roads are required by 15.12D(2) to be built to public roadway standards and be dedicated to the City as a public roadway. LDR 14.06 requires parking to be located to the rear or side of the building relative to the public street. The applicant is concerned that by offering a ROW, they will be required to locate parking to the rear or side relative to the ROW. Staff recommends the Board require the road to be built to public roadway standards but include a condition that the road is not intended to remain a private road, as allowed under 15.12D(3)(a): The DRB may it is discretion approve a roadway to be private if the proposed roadway functions as a private service or access road within a commercial subdivision or PUD). 14.06B(2) Parking The Board is prohibited by 15.02A(4) from granting waivers of this criterion even in the case of a PUD. (a) Parking shall be located to the rear or sides of buildings. Any side of a building facing a public street shall be considered a front side of a building for the purposes of this subsection. (b) The development review Board may approve parking between a public street and one or more buildings if the Board finds that one or more or of the following criteria are met. The Board shall approve only the minimum necessary to overcome the conditions below. (i) the parking area is necessary to meet minimum requirement of the Americans with Disabilities Act (ii) the parking area will serve a single or two-family home Most of the parking falls under this exemption. (iii) and (iv) Not applicable (v) The principal use of the lot is for public recreation The Board preliminarily that as configured, the Resident Club (open space Lot 32) to be principally for public recreation and accepts the parking as proposed. Staff considers no modification of this finding to be necessary. Staff considers a similar finding to be appropriate for the dog park parking. (10) The project is consistent with the goals and objectives of the Comprehensive Plan for the affected district(s). See above under 14.06A Relationship to the Comprehensive Plan. (11) The project’s design incorporates strategies that minimize site disturbance and integrate structures, landscaping, natural hydrologic functions, and other techniques to generate less runoff from developed land and to infiltrate rainfall into underlying soils and groundwater as close as #SD-22-10 Staff Comments 2022-10-06 19 19 of 29 possible to where it hits the ground. For Transect Zone subdivisions, this standard shall apply only to the location of natural resources identified in Article XII of these Regulations. See discussion of similar criterion under 14.07F above.  ZONING DISTRICT & DIMENSIONAL REQUIREMENTS The Board found at preliminary plat that if the project meets the objectives and considerations discussed elsewhere in this document, minor modification of specific dimensional standards needed to provide the well thought out and activated neighborhood design discussed herein will be granted. Zoning district and dimensional standards pertain to the following elements of lot layout. • Density • Setbacks • Heights • Lot Size Density The applicant has calculated that 102.6 acre project has an available density of 452 homes based on the acreage of each included zoning district. The applicant has proposed 155 homes. Staff considers this criterion met. Setbacks Setbacks are discussed under waivers above. Staff will incorporate the Board’s findings on setbacks into this section of the final plat decision. Heights 151 homes are proposed in the R1-PRD, and 4 homes are proposed in the C1-LR. Heights in both zoning districts are limited to 28-ft for a pitched roof. Height waivers for the C1-LR district are discussed above and will be incorporated into this section of the final plat decision. The provided homes appear able to accommodate the required maximum height, taking into consideration that height is measured from average pre-construction grade. Staff considers this criterion met. Lot Size The homes are proposed on shared lots therefore minimum lot size does not apply. The applicant has proposed footprint lots. Staff recommends the Board include a condition that the City does not recognize footprint lots. The footprint lots are not considered in review of this application.  18.01 INCLUSIONARY HOUSING REQUIREMENTS B. Inclusionary Units (1) For covered development, at least fifteen percent (15%) of the total dwelling units offered for rent. Inclusionary Rental Units and at least ten percent (10%) of the total dwelling units offered for sale, including units offered for sale in fee simple, shared, condominium or cooperative ownership, shall be Inclusionary Ownership Units. Prior to or upon request for the Certificate of #SD-22-10 Staff Comments 2022-10-06 20 20 of 29 Occupancy the applicant shall notify the City whether the units will be Inclusionary Rental Units or Inclusionary Ownership Units so that the City, or its designee, may confirm that the offered rents or sales prices meet these requirements prior to issuance of the Certificate of Occupancy. In addition: (a) Where the application of this formula results in a fractional dwelling unit, that fractional dwelling unit shall be rounded to the nearest whole number (fractions that are greater than n.00 but less than n.50 are rounded down; fractions that are greater than or equal to n.50 but less than n+1.00 are rounded up). The applicant is proposing to construct 155 units, all of which will be for-sale units. Therefore the applicant must provide 15.5, rounded to 16, inclusionary units. At preliminary plat, the Affordable Housing Committee testified that they were happy with the applicants proposal, including the proposal to provide inclusionary units with higher bedroom counts, provided that amenities be available to all units. The applicant is proposing eight (8) three bedroom inclusionary units and two (2) four bedroom units. 18.01E allows three bedroom units to count as 1.5 inclusionary units each, and four bedroom units to count as 2.0 inclusionary units each, provided they not be used as offset or bonus units. Therefore the applicant has provided 8 x 1.5 + 2 x 2 = 16 inclusionary units, meeting the required minimum. 12. The applicant proposes to achieve a four-bedroom unit by providing a finished basement. The applicant has indicated that they are not committing to four bedroom units and are instead leaving the option of whether to provide three or four bedrooms to the home buyer. If four bedroom units are not provided, the project will not achieve the required minimum number of inclusionary units. Staff therefore considers the Board should require the applicant to commit to the specified bedroom mix or instead commit to a higher number of 3-bedroom or smaller units. Whichever solution, Staff considers the commitment must be made now, at this final plat stage of review. (2) Inclusionary units required under this section shall be: (a) Constructed on site, unless off-site construction is approved under Subsection (E)(1)(b) (Off-Site Construction) of this Article. The units are proposed to be constructed on site. (b) Integrated into the overall project layout and similar in architectural style and outward appearance to market rate units in the proposed development. (i) Inclusionary units shall be physically integrated into and complement the overall layout, scale, and massing of the proposed development; this criterion may be achieved in a single building or multiple buildings. The inclusionary units are proposed to be the middle unit in the eight three-family buildings and two of the units on the north end of lot 16 (Units 16-15 through 16-20). (ii) Inclusionary units shall be constructed with the same exterior materials and architectural design details quality of those of the market rate units in the development. However, the exterior dimensions of the inclusionary units may differ from those of the market rate units. As long as no architecture specific to inclusionary units is developed, the Board found at preliminary plat that criterion will be met. #SD-22-10 Staff Comments 2022-10-06 21 21 of 29 (iii) Inclusionary units shall be no less energy efficient than market rate units; O’Brien Brothers has touted energy efficiency as in important element of this development. They testified that all units will meet the stretch code and will include measures such as additional insulation and higher efficiency fixtures. Additional costs will be required for measures such as solar panels and heat pumps. The Board preliminarily found this criterion met. Staff considers no changes are proposed which would result in a change in compliance with this criterion. (iv) Inclusionary units may differ from market rate units with regard to both interior amenities and amount of Habitable Area. However, the minimum Habitable Area of inclusionary units shall be 450 square feet for studios, 650 square feet for 1-bedroom units, 900 square feet for 2-bedroom units and 1,200 square feet for three (3) or more bedrooms. If the average (mean) area of the Habitable Area of the market rate units is less than the minimum area required for the Habitable Area of inclusionary units, then the Habitable Area of the inclusionary units shall be no less than 90% of the average (mean) Habitable Area of the market rate units. The applicant has testified that the available footprints for the units planned to be affordable is 1,256 sf or greater, therefore this criterion is met. (v) Inclusionary units developed as part of a housing development of predominantly market rate duplexes and/or multi-family dwellings may be of varied types. Inclusionary units developed as part of a predominantly-single-family housing development may be accommodated in buildings containing up to four (4) dwelling units that have the appearance of single family homes through their scale, massing, and architectural style. The Board’s preliminary plat decision considered this criterion as restricting inclusionary units to buildings with no more than four units and with the appearance of single family homes and found this criterion met. Staff considers no change has been proposed which would alter compliance with this criterion. (vi) There shall be no indications from common areas that these units are inclusionary units. The Board found this criterion met at preliminary plat. Staff considers no change has been proposed which would alter compliance with this criterion. (vi) The average (mean) number of bedrooms in the inclusionary units shall be no fewer than the average number of bedrooms in the market rate units. For projects involving 50 or more dwelling units, the applicant shall provide a revised estimate to the Administrative Officer at each interval of 50 dwelling units; the revised estimate shall account for the differences in estimates vs. actuals for the units permitted to date and shall apply to inclusionary units for which the Administrative Officer has not issued a zoning permit. The applicant has provided a chart demonstrating compliance with this criterion. In summary, 12% of the offered floor plans are for two bedroom units, while 75% of the offered floor plans are for three bedroom units and 13% of the offered floor plans are for four bedroom units. 75% of the inclusionary units will be three bedroom units, and the remaining 25% will be four bedroom units. Staff considers this criterion met, though the applicant is still obligated under this criterion to update this computation at each interval of 50 dwelling units. #SD-22-10 Staff Comments 2022-10-06 22 22 of 29 (vii) Unfinished space within an Inclusionary Ownership Unit that is not initially constructed as bedroom, but which can be converted to such, may count as a bedroom. No more than one (1) bedroom per inclusionary ownership unit may be counted in this manner. 13. All units are proposed to have unfinished basements. The applicant does not intend to include egress from unfinished basements unless the buyer requests it. Staff recommends the Board ask the applicant to explain how this criterion affects their proposal to offer buyers the option for three or four bedroom units. As noted above, the applicant is relying on the presence of four bedroom units in their inclusionary unit calculation. (c) Constructed and made available for occupancy concurrently with market rate units. The applicant shall provide a proposed phasing plan demonstrating concurrent development and occupancy of the market rate units and the inclusionary units. The Development Review Board may attach conditions necessary to assure compliance with this section and may, based on documentation from a financial institution denying financing or on physical site constraints, approve a plan allowing non-concurrent construction of the inclusionary units. The Boards preliminary plat finding is as follows: The inclusionary units are proposed in the first phase that includes dwelling units. However, since the applicant has requested that subsequent phases be allowed to proceed concurrently with the first phase, the Board finds that 25% of the inclusionary units shall be constructed and made available for occupancy prior to 25% of the market rate units, and so on for each additional 25% construction. This condition need not come into play unless things evolve in a different manner than the applicant is anticipating. Staff considers no change has been proposed which would require modification of this finding. Staff understands that three and four bedroom inclusionary units count at 1.5 and 2 times the rate of two bedroom inclusionary units, respectively, and anticipates this will be taken into account in the permitting, but considers it not something the Board need to specifically address. D. Affordability Requirements The basis for determining maximum rental and purchase prices for inclusionary units and applicant rental or purchaser household eligibility for accessing inclusionary units under this section are described below. The data used to determine the incomes, rents and purchase prices is updated annually by U.S. Department of Housing and Urban Development (HUD). The Vermont specific data is updated annually on the Vermont Housing Data website, managed by the Vermont Housing Finance Agency, in a table titled “Maximum rent and purchase price affordability thresholds by income and household size”. Refer to this table in administration of this section. This section pertains to monthly housing, which may not exceed one twelfth of 30% of the targeted Area Median Income (80%) corresponding to the size of the specific unit as measured in number of bedrooms. It also requires utility costs to be included. Income eligibility must be determined based on Annual Median Income of no more than 100% Area Median Income targets as measured by HUD. Administration of continued compliance with these criteria is delegated to the City Manager or their designees. The Board found at preliminary plat that the applicant must provide the required deed restrictions for continued affordability prior to issuance of a zoning permit. Staff considers no change has been proposed which would require modification of this finding. #SD-22-10 Staff Comments 2022-10-06 23 23 of 29  13.16 EARTH PRODUCTS The applicant at preliminary plat proposed a “gravel extraction area” and construction staging area on Potash road. They have revised their proposal to also include a soil stockpile and fill area on the far west of the PUD near Potash Brook. The gravel extraction and construction staging area is currently the steepest portion of the Industrial/Commercial zone, is presently wooded, and abuts a large area of Class II wetland. Without any plans for development, the applicant is proposing significant regrading of this area, including blasting to remove ledge. The applicant at preliminary plat provided extensive discussion of why they believe this ledge blasting is advantageous including that the blasting “will facilitate a much more level and aesthetically pleasing commercial project, and will create a buildable site shielded from view of Old Farm Road.” Since no commercial development is proposed at this time, the Board found this proposed ledge removal through blasting shall be reviewed under 13.16 pertaining to resource extraction, as well as the specific noise and vibration standards of LDR Appendix A, as well as separate Public Nuisance Ordinances and included specific conditions to be addressed at final plat. 13.16 Earth Products A. General Requirements. The conduct of a resource extraction operation that involves the removal of loam, gravel, stone, fill, topsoil, sod or similar substance, except when incidental to or in connection with the construction of a building on the same lot, shall be permitted in any district, except as limited by the Surface Water Protection Standards and Interstate Highway Overlay District, subject to site plan approval by the Development Review Board after public notice. The Board found these standards apply. The applicant has provided an assessment of proposed blasting operations and noise impacts due to crushing of materials. B. Site Plan Requirements. An application for the removal of more than twenty (20) cubic yards within one (1) calendar year period shall include the submittal of a site plan showing the area from which earth products are to be removed. Also, the application shall include specific information pertaining to the following factors and such other information as the Development Review Board may require. At minimum, the following information shall be required: (1) Depth of excavation, in proximity to roads or adjacent properties. Maximum depth of cut is 25-ft. (2) Existing grade and proposed grade created by removal of material. This is shown on Sheet Q-4. Cross sections are also provided. (3) Effect upon public health and safety. (4) Creation of a nuisance. (5) Effect upon the use of adjacent properties by reason of noise, dust or vibration. The applicant has prepared a noise study evaluating the impacts of rock crushing operations. The applicant is proposing to blast materials and crush them on site for use as foundation materials for the proposed development. The study concludes that continuous noise levels from the rock crushing will be below ambient levels. Staff has not readily found information on anticipated noise levels from blasting. 14. Staff recommends the Board ask the applicant to discuss anticipated noise from blasting, including whether the noise levels from blasting could be considered a nuisance. #SD-22-10 Staff Comments 2022-10-06 24 24 of 29 The applicant has stated that dust will not be a problem due to the location of the area relative to existing development. Dust is proposed to be controlled by use of water, and drill machines are proposed to be equipped with dust collectors. 15. Staff recommends the Board discuss whether to include a condition that places responsibility on the applicant for removal of dust deposited outside of the approved area. The applicant has provided a blast impact assessment, which includes the following statement as to vibrations. Vibrations may be noticeable and therefore may result in complaints, at PPVs as low as 0.02 to 0.06 in/sec. This is equivalent to the vibrations generated from a heavy truck traveling down a bumpy road, and vibrations of this magnitude should be expected for neighboring residences Experience has shown that blasting operations in locations such as the Project will be felt by neighbors and that the impacts will feel significant, even if they are well below the design standard. There is no correlation between the design standard that is studied and documented to be safe for structures, and the human experience of vibration in their home. The Project Owner is keenly aware of this, having experience from the Phase I blasting operations. It is impossible to set a design standard for blasting that is imperceptible as the blasts would be too small to make meaningful progress, but this Project has set its design standard at 50% of the levels we know to cause damage, well below what is required. We believe that this reduction in allowable vibration is meaningful, will greatly reduce the perception of vibrations for neighbors, and will eliminate the risk of damage to surrounding structures. Staff considers no additional review of vibration to be necessary. (6) Effect upon traffic hazards in residential areas or excessive congestion or physical damage on public ways. The applicant has stated that they will be using “haul roads” to truck material to and from the construction staging area, but no information about the haul roads appears to have been provided. Additional discussion of haul roads is below. (7) Erosion potential due to removal of vegetative cover. The applicant is proposing to use a sediment trap to control runoff. This project will be subject to a state general or individual permit for stormwater runoff from construction sites, which will impose design requirements on sediment control measures. The applicant has indicated that the area could be potentially used for construction staging for as long as 15 years. The applicant has proposed to vegetated the site six months after when rock removal and crushing operations are complete. City erosion control measures require the following. 16.03B Erosion and Sediment Control (1) The smallest practical area of land should be exposed at any one time during development. When land is exposed during development, the exposure should be kept to the shortest practical period of time. Areas of disturbance must have temporary or permanent stabilization within 21 days of initial disturbance. (2) Land shall not be left exposed between October 15 and April 15. #SD-22-10 Staff Comments 2022-10-06 25 25 of 29 (3) Where necessary, temporary vegetation and/or mulching and structural measures shall be required by the Development Review Board to protect areas exposed during the development. (4) Sediment basins (debris basins, desalting basins, or silt traps) shall be installed and maintained during development to remove sediment from run off water and from land undergoing development. (5) The permanent final vegetation and structures shall be installed as soon as practical in the subdivision. Exposed soil must be seeded and mulched or covered with erosion control matting within 48 hours of final grading. (6) Adequate and permanent measures shall be taken at culvert outfalls to minimize or prevent erosion and disruption of drainageway areas. 16. Staff recommends the Board require the applicant to modify their stabilization plan to comply with the timelines in the City’s erosion and sediment control measures. Where bare rock is left exposed, or excavation is within a fully contained depression, erosion control measures are not necessary. The Board required the applicant submit following additional information regarding earth products as part of their final plat application. a. specific impacts and durations (both overall and frequency of operations) The applicant has indicated that 70,000 cubic yards of materials are proposed to be removed in cuts up to 25-ft. They estimate 75 days of drilling and blasting. Staff notes drilling and blasting will not occur continuously but instead will have delay windows while equipment is repaired. They anticipate 5 – 10 blasts per week. 17. Staff recommends the Board ask the applicant to describe the duration over which they anticipate the 75 blast days will take place. Staff notes the 75 days does not include blasting outside of the construction staging area as may be necessary for construction of the approved project. b. specific mitigation measures – visual, noise, dust, roadway impacts Proposed Mitigation measures are generally limited to best practices and do not seem to include site specific measures. 18. Staff recommends the Board ask the applicant to describe the impact on Kimball Ave and Old Farm Road. Blasting operations are proposed to begin at 7AM and end before 5PM Monday through Friday. The City’s public nuisance ordinance prohibits use of power equipment or machinery, and noise resulting from construction, before 7AM. In order to begin blasting at 7AM, will there be other work taking place before 7AM? Will there be road closures during the blasting? Staff further recommends the Board prohibit blasting and crushing work on Federal Holidays. c. construction access road – location, plans, phasing and how it affects houses. The construction should proceed from the most remote end back towards the staging area, and be removed as construction is completed. The plan should show how construction access road is retired including timing and physical appearance. #SD-22-10 Staff Comments 2022-10-06 26 26 of 29 The applicant has stated they are not able to provide a location for construction access roads. Staff considers the factors that should come into play are: - disturbance to areas not otherwise disturbed, and specifically areas not otherwise approved for disturbance such as phases for which no zoning permit has yet been issued or areas within the PUD but outside the area approved for development - disturbance to areas to remain vegetated - disturbance to wooded areas - road crossings The applicant has provided the following statement as pertains to this requirement of preliminary plat. The construction of haul roads and internal maneuvering of equipment is not something that the Applicant can provide to the Board. The Applicant has provided some conceptual haul road locations in the EPSC plans. Those roads may need to move, be relocated, or re-oriented to facilitate construction. This is a massive site work project that is impacted by hundreds of variables on a daily basis which are analyzed by our project team of dozens of individuals working to build the Project. To presume that we can plan to this level of detail with regard to internal haul roads would be an error. We must have the flexibility to adapt and to build the project as required by the facts on the ground and simply cannot provide this level of detail on internal site maneuvering. Staff recommends the Board clarify whether the described uncertainty is only within this construction/staging area or if they are referring to the movement of construction vehicles from this construction/staging area to the project as a whole. It is understandable that movement of construction vehicles within the construction/staging area will be variable as materials is excavated, but there should be a plan for movement of vehicles and materials outside of this area to appropriately mitigate the impacts describe above. 19. Staff recommends the Board either require the applicant to present a plan for movement of construction vehicles and materials between the staging area and the project to the Director of Public Works for consideration prior to closing the hearing, or include a condition that the construction vehicle management plan requires DPW approval prior to issuance of a zoning permit to construct. d. plan for site restoration in the event of work stoppage As noted above pertaining to erosion prevention and sediment control, the applicant is proposing to topsoil and seed the site six months after when rock removal and crushing operations are complete. No provision is made for if the applicant does not complete the grading as designed. 20. Staff recommends the Board ask the applicant to describe how the material is proposed to be removed with the intent of understanding what interim situations may occur. If there is the potential for leaving a large depression/pit, the Board may wish to require a surety for site restoration. C. Conditions of Approval. The Development Review Board, in granting its approval, may impose conditions on the following: #SD-22-10 Staff Comments 2022-10-06 27 27 of 29 (1) Duration of the permit for any length of time that the Development Review Board deems appropriate. The applicant has requested six years to complete the work in the construction staging area. However, they are also asking that the stone pad proposed for crushing and blasting operations be allowed to remain indefinitely as a construction staging area. They anticipate a timeline of 10- 15 years, but Staff anticipates a longer timeline if the area is allowed to be used as staging for the entire PUD. 21. Staff instead recommends the Board include a condition that the construction staging area be restored no longer than eighteen months after the issuance of the most recent zoning permit for the approved homes. This would mean that should the applicant fail to pull a zoning permit for the approved homes for 18 months, even if all 155 homes were not built, the applicant would need to remove the construction staging area. 18 months is suggested as a top-end estimate of how long it may take to construct a home, though in reality the grading and foundation work should be completed much more quickly than that. Should the applicant later wish to use the construction staging area for construction in the C1-LR or IC zoning districts, or there be an unanticipated but finite delay, they may apply for approval to do so at that time. (2) Submission of an acceptable plan for the rehabilitation of the site at the conclusion of the operations, including grading, seeding and planting, fencing, drainage, and other appropriate measures. The applicants proposed rehabilitation plan has already been discussed. (3) Hours of operation, routes of transportation, and amount of material to be removed. The applicant is requesting to be permitted to work 7AM to 7PM Monday to Friday with no weekend hours for blasting or crushing. They request standard construction be allowed on weekends from 8AM to 5PM. 22. The City’s public nuisance ordinance prohibits construction noise between 9PM and 7AM. Staff recommends the Board accept the applicant’s proposal but also exclude federal holidays from blasting and crushing operations. (4) Provision of a suitable bond or other security in accordance with Section 15.15 adequate to assure compliance with the provisions of these Regulations. The applicant is proposing a $50,000 bond for site restoration. They argue that the crushed rock has it’s own value and could be used should additional funds be needed to restore the site. The applicant will also have other sureties in place. However, the other sureties will be for specific improvements and cannot be applied to restoration in this area. 23. Staff has requested DPW review of the proposed amount and anticipates having an update at the time of the hearing. Appendix A Performance Standards Staff considers that these are written as performance standards for operations, and that construction by its nature exceeds the performance standards, but they remain a useful guidepost. A.2(a) No vibration shall be produced which is transmitted through the ground and is discernable without the aid of instrument at or beyond the lot lines, nor shall any vibration produced exceed 0.002g peak at up to 60 cps frequency, measured at or beyond the lot lines using either seismic or electronic vibration measuring equipment. #SD-22-10 Staff Comments 2022-10-06 28 28 of 29 The proposed blasting, by the applicant’s own testimony, will exceed these limits. The Board at preliminary plat determined this standard is not directly applicable because it was written for permanent operations. Notwithstanding, the Board reserved the right to include conditions at final plat or when specific lots are proposed for development limiting the duration for which the numeric standards in this criterion may be exceeded. Staff considers the above analysis of blasting operations to adequately address this criterion. A.3 Noise (a) The following acts are declared to be loud, disturbing and unnecessary noises and shall be deemed detrimental to the health and safety of the residents of the City of South Burlington. (vi) Noise in general. Any noise which is deemed objectionable because of volume, frequency or beat and is not muffled or otherwise controlled. (b)(i) The creation of, permitting or operation of any of the above sets, instruments, devices or vehicles causing said noise in such a manner as to be plainly audible at a distance of fifty feet (50’) from the building, structure or vehicle from which noise emanates shall be prima facie evidence of a nuisance and a violation of these Regulations. (c)(iii) Temporary actions benefiting the public, including but not limited to roadway construction, sewer and water line construction, and special public events, are specifically exempt from the provisions of these Regulations upon approval of such an exemption by the City Manager. The Board at preliminary plat determined these criteria are not directly applicable because they were written for permanent operations. Notwithstanding, the Board may include conditions at final plat or when specific lots are proposed for development limiting the duration for which the numeric standards in this criterion may be exceeded. Staff considers the above analysis of noise to adequately address this criterion.  ENERGY There are no specific criteria in the LDR requiring energy efficiency. The comprehensive plan includes the following goal. • Comprehensive Plan Goal: Green & Clean. Emphasizing sustainability for long-term viability of a clean and green South Burlington The Energy Committee provided comments on the preliminary plat on 1/5/2021. Excerpts from the comments of the Energy Committee follow. The City of South Burlington has committed to reduce the greenhouse gas emissions of all of South Burlington by 26-28% below 2005 levels by 2025. The City is not on track to meet that goal and it is very difficult to see how the City would meet this goal if new homes in the City continue to be built with fossil fuel infrastructure. It is critically important for the City, the State and the larger global community to reduce greenhouse gas emissions as quickly as possible to avoid the worst effects of climate change. • The SBEC’s first and very strong recommendation is that all the homes to be built be fully electric (and not built with any fossil fuel infrastructure). Since the electric grid in South Burlington is already very “clean” (94%+ carbon-free), and is targeted to be 100% carbon fee by 2025, such homes will generate no (or few) greenhouse gas emissions. #SD-22-10 Staff Comments 2022-10-06 29 29 of 29 • We also recommend that all new homes be built with 240v lines into each garage to facilitate electric vehicle charging, or better yet that level 2 chargers are pre-installed. • The residential stretch code already requires that new residential homes be built “solar ready”. We would further recommend that attention be paid to the orientation and roof lines of each home to maximize solar potential. • Consideration should also be given to constructing a community solar array. • Finally, the SBEC would appreciate if the applicant would provide a submission that demonstrates how each of the homes will comply with the residential stretch code, particularly the elements set forth in Table 5.6 of the 2020 Vermont Residential Energy Code Handbook (attached). The Board’s preliminary plat finding was that this development, through its mixed use character, density, and location within the transit overlay district, is consistent with the goal of the Comprehensive Plan. The Board encouraged the applicant to strive towards incorporating the comments of the SBEC and requested a report on how they have done so at the final plat stage of review. The applicant has indicated they will be installing natural gas but will install electrical heating systems if the home buyer wishes. They will only rough-in electric car charging where future modification would be difficult or where requested by the home buyer. They provide solar ready roofs and rough in conduit for solar charging. They are not requiring roof lines be oriented for maximum solar gain and instead are leaving it up to the home buyer. They are not proposing ground mounted solar arrays. They described in detail how the Residential Energy Code Handbook is used. Based on preliminary plat comments of the Natural Resources and Conservation Committee, the Board at preliminary plat included a statement encouraging the applicant to use roofing materials with a reflectance index of 20 or higher. 24. Staff recommends the Board discuss whether to require a certain percentage of roofs be oriented for optimum solar gain. RECOMMENDATION This completes initial review of relevant criteria. Staff recommends that the Board work with the applicant to address the issues identified herein and continue the hearing for the purpose of allowing the applicant to make modifications necessary to address the feedback of the Board. Respectfully submitted, Marla Keene, Development Review Planner