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HomeMy WebLinkAbout4677 - Mayes Meadow - Conservation Easement Modification Request 10-4-2023PLANNING | LANDSCAPE ARCHITECTURE | CIVIL ENGINEERING | URBAN DESIGN 200 South Tryon Street, Suite 1500 Charlotte, NC 28202 Office: 704-376-1555 Bolton-Menk.com To: Daniel Ingram, NC General Manager, WLS From: Ben Wood, Project Manager, ColeJenest & Stone cc: Ken Holbrooks, Bayard Development Tim Coey, Bayard Development Date: September 25, 2023 RE: Upper Rocky Mitigation Bank Modification Request Project(s) Overview The proposed plan currently under development includes the final phase of a multifaceted land concept located on a property in Mecklenburg County, NC. The property (referred to as the ‘Mayes tract’) was identified in 2015 as having the ideal conditions for both a residential community (referred to as ‘Mayes Meadow’) in conjunction with the establishment of a stream and wetland restoration project. The Mayes tract had sufficient upland conducive to residential development coupled with valuable natural resources that had been significantly modified historically and would provide maximum uplift through restoration. A critical quality that the Mayes tract possesses includes the portions of the land needed for both concepts were clearly demarcated from one another. The footprint ideal for restoration could be placed into a conservation easement, restored to maximize water quality and various species habitats, provide long term protection on an invaluable resource located within one of the fastest developing subwatersheds in the U.S, and that would not negatively affect a proposed residential development located within the uplands. The remaining portion of the Mayes Tract that didn’t possess natural resource restoration value could be developed in a manner that was conservation minded and would not negatively impact the restored natural resources. The coexistence of these two concepts represents the primary intent of the U.S. Army Corp of Engineers (USACE) approach to mitigating offsets within the region(s) most susceptible to impacts, development, and growth (mitigation using the watershed approach). Upper Rocky Mitigation Bank Project Description The concept of the Upper Rocky Mitigation Bank (referred to as ‘Upper Rocky’) began in 2015 when the properties were identified and reviewed for restoration potential. This restoration project had been identified by Charlotte-Mecklenburg Storm Water Services (CMSWS) as a top priority restoration reach within the Rocky River watershed. Grant dollars had been secured for the beginning stages of restoration design but until land control could be achieved, the restoration project could not proceed. As long as the land remained in private ownership, CMSWS would likely not be able to secure an easement for the restoration effort. The concept of utilizing a mitigation banking model was implemented to use private funding that would compensate the landowners for the placement of a conservation easement on their land and identify a footprint that would not negatively affect the future development value of the property, which was significantly higher than the mitigation value of the land. The landowners were open to PLANNING | LANDSCAPE ARCHITECTURE | CIVIL ENGINEERING | URBAN DESIGN 00000.00 | October 4, 2023 2 considering a conservation easement specifically under the principle that the easement wouldn’t decrease their land value for future development. This represents a significant hurdle to comply with the USACE watershed goals. Convincing landowners with significant land value to enter their property into a conservation easement is challenging which has led to most mitigation occurring well outside of the areas where impacts and growth occur. Once the Mayes family was committed to the conservation easement concept, the mitigation bank project proceeded forward. Due to the need to shape the conservation easement in a way that didn’t decrease future land development value and allowed for a residential development, proposed breaks in the conservation easement were created to allow for a future greenway trail (already depicted by the Town of Cornelius on the greenway trail masterplan), future sewer line connection, and future road crossing over one of the tributaries identified on the property. The breaks in the proposed conservation easement were preliminary in nature at the time the conservation easement was drafted because a site plan for a proposed development had not been developed and approved. Water & Land Solutions (WLS), the sponsor for Upper Rocky, was involved with the Town of Cornelius (referred to as the “Town”) on the future location of the greenway trail. WLS and the Town worked together to locate, design, and construct a portion of the greenway trail on the adjacent Beverly property while that property was in the development phase. Six breaks were established in the conservation easement on the Beverly tract to accommodate a road crossing, greenway trail, powerline, and multiple sewer line crossings. WLS and the Town originally agreed to an extension of the greenway trail to the property line of the Beverly Tract and the Mayes tract. The Town could not define the location of the greenway trail on the Mayes tract while the property was privately owned. The mitigation bank was approved for use in 2020 and the conservation easement was recorded on the Mayes Tract in November, 2020. Unique Places to Save (UP2S) was identified as the long-term steward on the project and took control of the conservation easement at recording. The mitigation bank was constructed in 2021/2022 and has maintained success since construction was completed. Mayes Meadow Development Project Description The Mayes Meadow development tract concept was in early consideration in 2017. At this time the property was owned by Mrs. Mayes and her desire was to leave the tract in-tact (not be developed) while she remained alive and retained ownership. Because of this ownership position, a site plan was not developed for the proposed development project. In late 2019, Mrs. Mayes passed away and the ownership of the land transitioned to the three remaining heirs to determine the future of the property. After approximately 1-2 years of deliberation and negotiation between the Mayes family heirs, the Bayard Group (referred to as ‘Bayard’) was selected to proceed forward with the proposed development project. Bayard’s successful track record of approved developments in the region, understanding of conservation minded development projects, familiarity with the mitigation concept, and initial effort in connecting the Mayes family and WLS concerning the conservation easement concept made them the ideal partner to proceed forward with the proposed development. Bayard proceeded forward with developing a bubble site plan for discussion and to receive input from the Town as well as Mecklenburg County. Two critical requirements for a future development tract involved the capacity for sewer allocation (to be approved by Charlotte Water) and the construction of the greenway trail connection from the Beverly property line through the Mayes Meadow development tract and to the western property line (Bjorneboe properties). Bayard incurred significant delays in site approval for multiple years largely related to a sewer capacity concern with Charlotte Water (referred to as the “City”) for this region. These delays did not allow for a site plan approval process to fully begin until 2022 which would have defined not only the location of the future sewer line but also the location of the proposed greenway trail. Bayard has proceeded forward PLANNING | LANDSCAPE ARCHITECTURE | CIVIL ENGINEERING | URBAN DESIGN 00000.00 | October 4, 2023 3 with developing a detailed engineered site plan for the Town and City. Approval and reservation of sewer capacity based on the 154-lot site plan is pending and imminent. It should be noted that regardless of the number of proposed lots, connection to the sewer in the northeast corner of the Mayes tract would have been required. The remaining steps for the final approval involves ironing out final engineering drawing details ahead of receiving a recorded and approved plat. Project(s) Timing The critical challenge that existed relative to the development of both the mitigation bank and residential development proceeding forward simultaneously involved the approval timing for each project. Each project requires completely different and unrelated processes for approval including but not limited to multiple different agency approvals, different financial requirements, and different landowner conditions. Just the transition of the property ownership alone following the death of Mrs. Mayes would not allow the development site plan approval to move forward simultaneously with the mitigation bank approval process, regardless if that was the desire of Bayard, WLS, and the USACE. These different processes led to significantly different time periods for approval which led to the requirement that the conservation easement be recorded well prior to a residential site plan being developed. The intent and the approach of the proposed projects were discussed with full transparency between the different approving agencies, WLS, UP2S, the Town, and the City (hence the reason conservation easement breaks were established when Upper Rocky was developed). Unfortunately, the timing of those approvals were not able to coincide in order to have the conservation easement breaks align with the approved location of the sewer line and greenway trail. Alternative Analysis With the conservation easement already having been recorded and with the sewer allocation approval being granted by the City, Bayard began going through the process of finalizing a site plan that would be supported and approved by the Town and City as well as avoid site natural resources and the conservation easement as much as possible. Three following alternatives were considered in the site plan development. Within each alternative, multiple locations for both the sewer and greenway trail were considered. In all, 5 locations for the greenway trail were considered and 4 locations for the sewer line were considered. Table 1 attached provides a summary of these alternatives and locations. The alternatives were considered as follows: Alternative 1 -– Complete Conservation Easement Avoidance The initial site plan consideration involved utilizing large lots, septic systems, and not implementing a paved greenway trail within the proposed development. An initial trail concept included a 5-foot wide natural surface hiking trail as opposed to a paved ADA approved greenway trail. However, the Emerald Necklace Greenway Trail masterplan that requires a paved ADA approved trail had been adopted by the Town nearly a decade before. This plan requires a 10-foot wide paved ADA approved greenway trail through the Mayes tract. The ADA also requires a maintenance corridor alongside the paved greenway trail (10-feet on each side of the paved trail). Without private landowners being willing to allow this trail while they owned the land, the trail was to be implemented when this property was proposed for private development. Therefore the private development approval is dependent upon the design and construction of this trail. In addition, the City will not approve a large lot septic system development because of water quality concerns associated with the use of septic systems as opposed to connecting to the existing sewer line PLANNING | LANDSCAPE ARCHITECTURE | CIVIL ENGINEERING | URBAN DESIGN 00000.00 | October 4, 2023 4 network. Where sewer is readily available, the City requires for proposed subdivisions to connect to the sewer network, especially if the sewer is located within the property being proposed for development. The existing sewer line is located along the northern property line of the Mayes tract. Any and all connections to that sewer line would have always required the crossing of existing wetlands and streams based on the location of the sewer relative the these natural resource features. Specifically, the critical manhole connection port for the proposed sewer line is located in the northeastern corner of the Mayes tract (depicted on Figure 1-7). At the time of conservation easement recording, WLS did not have the information on this location so that the breaks placed in the conservation easement were not placed in the most logical locations for the mitigation site and development. Any and all proposed development site plans for the Mayes tract will require both the paved ADA greenway trail and a connection sewer line to the City sewer system. Therefore, without a development plan approval, the Mayes property value decreases significantly from the current $6,300,000 valuation (current tax value) to an estimated $509,000 (farm value). Alternative 2 – Using Existing Conservation Breaks (Avoidance) Once it became apparent that the sewer connection and greenway trail construction would be required for the proposed development, Bayard began reviewing potential site plan concepts utilizing the existing breaks in the easement that were placed prior to the development of the Mayes Meadow site plan. Figure 2 (see attached) depicts the location of these easement breaks along with the three proposed sewer line locations and a proposed greenway trail location that would access the existing conservation easement breaks. The following locations were considered in this Alternative. Greenway Location #1 was considered first that would have utilized the existing break in the easement for the proposed greenway trail. This location would have included a total length of approximately 3,000 linear feet of land disturbance for the construction of the trail, would have required a stream crossing, and would have impacted jurisdictional wetlands that were delineated within the existing large easement break (0.02 acre of wetlands). This greenway trail location would have increased stormwater runoff within the protected buffer of the mitigation bank due to steeper topographical conditions adjacent to the easement boundary and because the trail would have been constructed parallel to the conservation easement boundary for a considerable length in order to position the trail in-line with the original Emerald Necklace Greenway Trail Plan on the property located west of the Mayes tract. The more linear footage of land disturbance for the trail potentially exposes more liability for the mitigation site from stormwater runoff, foot traffic access, and potential damage to the buffer vegetation adjacent to the trail. In summary, more wetlands, a stream crossing, topographic challenges, and significant land disturbance impacts would have been required for this trail location to utilize the existing breaks in the easement. It should be noted that WLS did not provide an easement break along the eastern edge of the Mayes property although the Greenway Trail plan was always anticipated to connect the Mayes and Beverly tracts. There is no way to connect the greenway trail from Mayes Meadow to Beverly without an easement break being created. Locations for this easement break are a part of Alternative #3. Sewer Location #1 was initially reviewed to try and avoid impacts to the conservation easement. This sewer connection from the lowest elevation of the proposed subdivision to the critical sewer connection point would have required over 3,200 linear feet of sewer line and would have required forcing sewage uphill in order to connect within the existing easement breaks. This sewer line would have required 3 stream crossings, would have impacted 0.11 acre of jurisdictional wetlands that were delineated within the easement break, and would have potentially negatively affected stormwater runoff within the protected buffer of the mitigation bank due to topographical conditions and parallel path of the sewer line adjacent to PLANNING | LANDSCAPE ARCHITECTURE | CIVIL ENGINEERING | URBAN DESIGN 00000.00 | October 4, 2023 5 the easement boundary. In addition and the most significant challenge to this location would be that this location would require a pump station to pump the sewage uphill as well as the need for a sewer line depth to be approximately 30-40 feet deep to access the conservation easement break. The amount of land disturbance for this sewer line depth would be significant. The City would not approve of this proposed plan. While this sewer location would have utilized the existing breaks, the impact to land, streams, and wetlands would have been considered significantly more and unnecessary than the proposed alternative. Sewer Location #2 was reviewed next to attempt to capitalize on a more direct sewer connection to the Beverly Tract. This location would require an additional 900 LF of sewer line and sewage would need to be pumped uphill to make this connection (pump station). This location would require no modification to the easement and have no known wetland impacts but would have a stream crossing. An additional challenge with this proposed location is that the adjacent landowner would have to be willing to allow access to his land for the sewer line, which he is not. The combination of the City not supporting a pump station coupled with an unwilling landowner does not allow this location to be considered. Sewer Location #3 was reviewed as well to see what it would take to direct sewer flow to Mayes Road. This location would add 2,800 LF of sewer line and would need to be pumped through the use of a pump station. There is no existing sewer along Mayes Road in this region so in order to complete this approach Bayard would have to pump sewage for several miles to the nearest sewer line. The City would not approve this proposed alternate because of the presence of a sewer line within the property (critical manhole in the northeast corner). For Sewer locations 1, 2, and 3, one major constraint presented itself. Without being able to allow for a natural gravity led sewer system directly from the lowest point of the proposed subdivision to the critical sewer connection point, a pump station would be required to move sewage uphill. Logistically, pump stations are not preferred because they require more land disturbance, introduce more mechanical requirements for the process, and increase the possibility of failures of the sewer system, which often lead to sewage spills during major precipitation events. Pump stations are typically avoided if at all possible. In the case of the jurisdictional review by the City, they made it clear they would not support the use of a pump station on the proposed development. Pump Stations are typically only allowed when there is no feasible gravity connection point nearby. Alternative #2 Summary Bayard looked at multiple sewer and greenway trail locations that could utilize the existing breaks in the easement and avoid an easement modification. Based on the City (sewer) and Town (greenway trail) requirements respectively, the existing breaks in the easement were not located to allow for the site plan to be supported or approved therefore rendering the Mayes tract as undevelopable. In addition, if the site plan could be approved, utilizing the existing breaks would have had significantly more impact to wetlands, streams, and indirect impacts from stormwater for the construction of the greenway trail and sewer line to access the existing breaks. In order to obtain site plan approval, reduce impacts to wetlands and streams, and construct with the least disturbance possible, Bayard considered relocating the existing conservation easement breaks for alternative #3. Alternative 3 –Relocating Existing Conservation Easement Breaks Once it became apparent that the sewer connection and greenway trail construction could not utilize the existing conservation easement breaks, Bayard began reviewing potential site plan concepts by relocating the existing breaks in the conservation easement. This would involve closing the existing breaks and creating new breaks (relocating the breaks) for less disturbance and impact to on-site natural resources. Figure 3 (see PLANNING | LANDSCAPE ARCHITECTURE | CIVIL ENGINEERING | URBAN DESIGN 00000.00 | October 4, 2023 6 attached) depicts the location of these proposed easement breaks along with the proposed sewer line location and four proposed greenway trail locations that were analyzed to minimize impacts to streams, wetlands, and the conservation easement. Sewer Location #4 was reviewed and becomes the least impactful alternate for sewer connection to the critical manhole tie in. This alternate would add 609 LF of sewer line and is the most direct connection to the critical tie-in manhole located in the northeastern corner of the Mayes tract. As mentioned above, the City requires connection to sewer if sewer is located on the same property as the proposed development. This location was designed to reduce the number of stream crossings (from 3 to 2) and wetland acres impacted (0.28) but while maintaining the gravity flow required for the sewer connection. In addition, the construction effort will utilize boring subsurface to avoid direct impacts to streams. Proposed impacts to wetlands associated with this sewer line connection are considered to be temporary. Greenway Location #2 was considered for the location of the eastern connection to the Beverly Tract’s greenway since a break in the easement was not originally created by WLS. This +/- 1,000 foot alignment follows the proposed easement break for the sewer line (Sewer Location #4) at the northeastern corner of the Mayes Tract until breaking off and connecting to the greenway trail on the Beverly tract. This would allow for a single easement break to accommodate both sewer and greenway connections on the Mayes property. This greenway connection however would require three stream crossings and significant wetland impacts during installation (0.41 acres). In addition, this would allow a much larger easement break within the Beverly Tract to connect to the existing greenway trail. This alternate likely would not be preferred by WLS nor would it be approved by the Town. Greenway Location #3 was considered for the location of the eastern connection to the Beverly Tract’s greenway next. This would require a +/- 400 foot connection and it would reduce significant stream and wetland impacts. This connection will only have 1 stream crossing and would avoid wetlands all together. The use of a bridge crossing over the stream would also allow for no impacts to streams or wetlands for this option. Greenway Location #4 was the approximate location of the greenway trail as proposed by the Town on their original Emerald Necklace Greenway Trail Plan. This location was considered approximate and had not taken into consideration the presence of wetlands and streams in this location at the time the Plan was drafted. This location was not evaluated due to excessive impacts to wetlands, streams, and easement. Greenway Location #5 was reviewed for the western connection from Mayes Meadow to the property to the West. This would be the shortest greenway trail connection path feasible that avoids all wetlands by shifting the greenway trail connection just upstream of the wetland boundary. This location also would completely avoid impacts to the stream by using a bridge crossing. This location also limits the amount of land disturbance by shortening the proposed trail length thereby reducing stormwater impacts. In addition, this proposed easement modification would be perpendicular to the easement boundary and would represent a smaller break than the existing conservation easement break therefore maximizing the protected conservation easement area within this location. This greenway trail alternate complies with the Town requirements to complete the trail through the Mayes tract, avoids all wetlands, avoids stream impacts, and reduces the overall land disturbance further reducing potential negative impacts to the mitigation bank. PLANNING | LANDSCAPE ARCHITECTURE | CIVIL ENGINEERING | URBAN DESIGN 00000.00 | October 4, 2023 7 Alternative #3 Summary In summary, Alternative 3 reviewed 4 greenway trail locations and 1 sewer line location to try and minimize the impacts to wetlands, streams, and the conservation easement as much as possible. The existing breaks in the conservation easement that were established for the greenway trail and sewer line were not placed in the most feasible locations. More wetlands and streams would have been impacted by utilizing those locations. By opening new breaks within the conservation easement utilizing the proposed locations (Figure 7), closing the existing breaks, and adding additional conservation easement, the proposed development is actually reducing wetland impacts, reducing stream impacts, and adding more conservation easement protection to the conservation easement then was originally proposed by WLS. The construction of the greenway trail and sewer line within these locations would have also reduce nearly 1 mile of additional land disturbance and maintenance. Overall Proposed Site Plan Summary – Minimization Effort Following the initial site plan meetings with the City and the recognition that the site would not be approved with the presence of a pump station, Bayard begin looking at the possibility of reducing the overall length of the greenway trail and sewer line and designing a more efficient and effective infrastructure plan that could be approved by the Town and the City as well as limit impacts to natural resources and to the conservation easement. The proposed plan depicted on Figures 1-7 provide the recommendation for the infrastructure components of Mayes Meadows. These recommendations include the closing of previously established easement breaks, adding more conservation easement to be protected, protecting more streams and wetlands, and opening smaller breaks for the practical locations of the sewer line and greenway trail. Figure 4 depicts the overall view of the 3 areas to be closed/added for the conservation easement and the 3 smaller sections of easement to be modified to allow for the infrastructure components. Figures 5 and 6 provide zoomed in views of these modification recommendations. Figure 7 depicts an overall view of the recommended and final conservation easement modifications. The proposed greenway trail easement breaks were selected in order to limit impacts to streams, wetlands and the easement areas. The break in the easement regarding the section of greenway trail on the Beverly tract was already agreed to by WLS but has not been created to date. The section being proposed for an easement break on Mayes Meadow for the greenway trail is depicted on Figures 4 and 6. This location was selected to avoid all impacts to wetlands (greenway trail crossing was placed away from existing wetlands, will only cross 2 streams (as opposed to multiple crossings), will utilize bridge crossings as opposed to a culvert crossing, and was chosen perpendicular to the conservation easement to reduce land disturbance and overall impact to the conservation easement. In addition, Bayard has agreed to the request of UP2S to construct a decorative chain and environmental education signs along this section to remind people to stay on the greenway trail to better protect the restored environment. The footprint of greenway trail and land disturbance was reduced over 50% with this selected path and will allow for a future connection on the adjacent property that will be located away from streams, wetlands, and the protected conservation easement. The proposed sewer line connection was selected in order to limit impacts to streams, wetlands and the easement areas, remove the need for a pump station, and limit the overall disturbance to the landscape. The section being proposed for an easement break on Mayes Meadow for the sewer line connection is depicted on Figures 6 and 7. This location was selected to avoid all permanent impacts to wetlands, will only cross 2 streams (as opposed to multiple crossings with the other options), was chosen as close to perpendicular to the conservation easement as possible to reduce land disturbance and overall impact to the PLANNING | LANDSCAPE ARCHITECTURE | CIVIL ENGINEERING | URBAN DESIGN 00000.00 | October 4, 2023 8 conservation easement, and primarily shortens the overall length of sewer line by nearly 85%. Once the sewer line has been constructed and the corridor stabilized, the proposed sewer line project will have no permanent impacts or loss of wetlands and/or streams on Upper Rocky. While the easement break will be established and the stream and wetland credits within that footprint will not be available for sale, the condition of the restored streams and wetlands will remain. The proposed conservation easement area will increase from 43.6 acres to 44.08 acres (gain of 0.48 acres), the stream feet protected increases approximately 481 linear feet, and the wetland area protected increases approximately 0.214 acres. It should be noted that none of the parties involved in these projects (Up2S, WLS, Bayard, and approving agencies) desire to work through the conservation easement modification process. In reviewing the proposed modification, with the locations of the proposed easement breaks, less land disturbance, and more streams/wetlands protected, we believe that the proposed modification will allow for continued long term success for the Upper Rocky Mitigation Bank. It is the goal of all groups to efficiently complete this modification and to not request any future modifications on the mitigation bank. Respectfully, Bolton & Menk, Inc d.b.a ColeJenest & Stone Ben Wood, PE Project Manager 704-376-1555 ben.wood@bolton-menk.com