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Home My WebLink About2020-01-27 Stormwater Review SPR 0/1 . Horsle v Wiften Groin Susfainbfe Envfrc>~nmenlal Salufions 294 Washington Street•Sulle 801•Boston,AAA 02106 857.263-8193 horsloywillon.com i November 4, 2019 Ms. Monica Gregoire, Staff Planner Planning Department Town of North Andover 120 Main Street North Andover, Massachusetts 01845 Ref: 2nd Peer Review of Stormwater Management The Trustees of Reservations 0 Chickering Road, Route 125 North Andover, MA 08145 Dear Ms. Gregoire and Board Members: The Horsley Witten Group, Inc. (HW) is pleased to provide the North Andover Planning Board with this letter report summarizing our second review of the Site Plan and Drainage Report for the proposed drive and parking lot at Chickering Road, Route 125, North Andover, Massachusetts. The plans were prepared for The Trustees of Reservations (Applicant) by Hancock Associates. We understand that the project involves a new visitor gravel access drive and a 60-car gravel parking area, as well as the refurbishing of a 1,450 square foot (sf) building, with associated walking path, landscaped areas, utilities, and an infiltration basin and a grass swale for stormwater management. The following additional documents and plans were received by HW in response to our September 17, 2019 initial peer review letter and a work session held on October 17, 2019: • Letter to North Andover Planning Board, prepared by The Trustees, regarding 0 Chickering Road, 137 Andover Street, The Trustees of Reservations, dated October 31, 2019 (3 pages); • Letter to North Andover Planning Board, prepared by Hancock Associates, dated October 29, 2019, regarding The Trustees of reservation, with attachments (37 pages); • Stormwater Report in support of Permit Site Plan, Chickering Road, Route 125, North Andover, MA, prepared by Hancock Associates, revised October 29, 2019; • HydraCAD revised November 4, 2019; • Operations and Maintenance Plan for The Stevens-Coolidge Place Proposed New Visitor Center, prepared by Hancock.Associates (5 pages), and • Permit Site Plan set for Chickering Road, Route 125, North Andover, MA, prepared by Hancock Associates, revised thru October 29, 2019 which includes: o Title Sheet Sheet 1 (October 29, 2019) o Existing Condition Plan (Meridian Associates) Sheet 2 (October 2, 2019) o Site Plan Sheet 3 (October 29, 2019) HorsleyWitten.corn N OoHorsieyWittenGroup Horsley Witten Group, inc. Town of North Andover November 4, 2019 Page 2 of 8 o Site Plan Sheet 4 (October 29, 2019) o Details Sheet 5 (October 29, 2019) o Layout and Materials Plan (mykd) Sheet 6 (October 29, 2019) o Layout and Materials Plan (mykd) Sheet 7 (October 29, 2019) o Site Details (mykd) Sheet 8 (October 29, 2019) o Lighting Photometrics (mykd) Sheet 9 (October 29, 2019) o Plan and Elevations Sheet 10 (October 29, 2019) o Construction Plan Sheet 11 (October 2019) Stormwater Management Design Peer Review HW offers the following comments concerning the stormwater management design as per the Massachusetts Stormwater Handbook (MSH) dated February 2008, the North Andover Stormwater Management and Erosion Control Regulations (Stormwater Regulations) adopted February 5, 2011, and the North Andover Stormwater Management and Erosion Control Bylaw (Bylaw). In accordance with Section 8.3 of the zoning Bylaw the proposed project requires approval under Site Plan Review which requires a Stormwater Management Plan. The Stormwater Management Plan shall be designed to fully comply with the criteria of the MSH as well as additional criteria presented in the North Andover Stormwater Regulations, These regulations will govern where applicable. The comments below correlate with the MSH standards and where the more stringent Town requirements are applicable additional comments are noted. The following comments correlate to the initial peer review dated September 17, 2019. Follow up comments are provided in bold font. 1. Standard 9 states that no new stormwater conveyances may cause erosion in wetlands of the Commonwealth. a. The majority of the Project site currently sheet flows from south to north, toward an existing wetland next to Chickering Road labeled as Discharge Point 1 (DP1). HW recommends that the boundary delineation be verified, specifically in the vicinity of the proposed Welcome Center, the watershed areas EX1 and PR1 may need to be further subdivided to verify that the proposed improvements including the Welcome Center and the area to the east of the Welcome Center do not increase the stormwater runoff to the north of the limit of work. The Applicant has reviewed its watershed delineation and is comfortable with the catchment areas. HW accepts the delineation provided. b. The Applicant is intending to maintain DP1 at the northern corner of the site. Best management practices and two infiltration basins are proposed to provide treatment before discharging and are connected by a grass swale. HW recommends that the Applicant evaluate installing riprap at the outlet to the proposed swale to minimize erosion along the edge of the overflow parking area. The Applicant has provided riprap as recommended. No further comment is needed. JJAPrgiecis1201811806-r N Andover On-Ca11118065L Tiumees\Report11911041 2nd Peer review Slorcnwater Review Trustees.doek 1 Town of North Andover November 4, 2019 Page 3 of 8 c. HW recommends that the Applicant provide riprap sizing calculations for the outlet from Infiltration Basin #2 prior to discharging towards the existing wetland resource area. The Applicant has provided the requested sizing calculations in the Stormwater Report. No further comment is needed. d. The narrative provided in the Stormwater Report states under Standard 1, that the stormwater system will provide water quality treatment via rain gardens. HW recommends that the Applicant adjust the narrative to be consistent with the proposed design utilizing infiltration basins to manage and treat the stormwater runoff. The Applicant has revised the narrative as recommended. No further comment is needed. 2. Standard 2 requires that post-development runoff does not exceed pre-development runoff off site, for a redevelopment project per MassDEP this standard must be met to the maximum extent practicable. The Applicant has increased impervious area on the site and provided two infiltration basins to prevent post-development runoff from exceeding pre-development runoff, however, HW has the following recommendations regarding the HydroCAD model: a. In accordance with Section 7.2 B. b)of the Stormwater Regulations the Applicant has provided analysis for the 2-, 10-, 25-, and 100-year storm events. HW recommends the Applicant utilize the 24-hour storm event provided in the North Andover Stormwater Management and Erosion Control Regulations for the 100-year storm event as well as use a Type III rainfall. The Applicant has adjusted the HydroCAD model as requested. No further comment is needed. b. The Applicant has noted in the Stormwater narrative under Standard 2 and Standard 3 that the soil logs indicate that the site consists of hydrologic soil group (HSG) C soils and therefore chose an exfiltration rate of 1.02 inches per hour (!ph) as indicated on the Rawls Rate Table. However, in accordance with the Rawls Rate Table found in the MSH Volume 3, Chapter 1, page 22, HSG C soils have an exfiltration rate of 0.17 or 0.27 iph. HW recommends that the Applicant clarify its choice of exfiltration rate and adjust the model as needed. The Applicant has clarified its use of 1.02 !ph for the exfiltration rate. No further comment is needed. c. In accordance with Section 7.2 B. b) of the Stormwater Regulations the Applicant is required to provide the analyses for the 1/ inch storm. HW recommends that the Applicant provide these additional calculations and verify that the proposed design attenuates the inch storm event. The Applicant has provided calculations documenting that the of precipitation times the impervious (gravel) area will be attenuated in the grass swale. No further comment is needed. FL'll'r�j erI s12013113f1(iS 1\'Ancloer On-C.r1411 RU(�Si.TrutitceslRcpnrl119]I U=�_2nd Pccr rcvie��+_Skrrcm�<rter Revic w_Tru�tces.ciuc� Town of North Andover November 4, 2019 Page 4 of 8 d. HW recommends that the Applicant provide the flow paths for the Times of Concentration (Tc) on the drainage maps. The Applicant provided HW with revised HydroCAD modeling calculations on November 4, 2019. The Tc values presented appear reasonable. No further comment is needed. e. The proposed Site Plan indicates invert elevations, and pipe lengths that are inconsistent with the pipe elevations and lengths in the Stormwater Report. Furthermore, the Detail Sheet labels the stormwater basins as detention basins while the Site Plans and HydroCAD model label them as infiltration basins. HW recommends that all elevations and labels between the drawings and the report 1 calculations be reviewed and adjusted as needed for consistency. The Applicant has adjusted the elevations and pipe lengths on the drawings and in the HydroCAD model for consistency. No further comment is needed. f. The outlet control devices for Infiltration Basin #1 and #2 are not consistent between the plans and the HydroCAD model. HW recommends that the Applicant review and revise for consistency. The Applicant has adjusted the outlet control device labeling for the forebay and the infiltration basin for consistency between the drawings and the HydroCAD model. No further comment is needed. g. The Applicant has provided Site Plans and Layout and Material Plans that are not consistent. HW recommends revising the plan set for consistency and to avoid any confusion on the types of stormwater practices being proposed. For example, the proposed plan indicates that a grass treatment swale is located to the north of the parking lot on Sheet 4. On Sheet 6 this is referred to as a 9-inch deep rain garden. Additionally, the dimensions between the grass drainage swale detail on Sheet 5 and the drainage swale detail on Sheet 7 are inconsistent. The 6-foot width indicated on the detail on Sheet 7, is not enough room for a 2-foot depth at a 3:1 slope. HW recommends revising the details and having consistent information throughout the plans. The Applicant has adjusted the plan details for consistency. No further comment is needed. h. The Site Plans indicate an emergency overflow in the details for Berm at Detention Pond #1 and#2 on Sheet 5. HW recommends that more information be provided about these overflow structures pertaining to size and location. The Applicant has clarified the emergency overflow. Per the HydroCAD model the emergency overflow is not expected to discharge for any of the storm events modeled. No further comment is needed. i. The Site Plans indicate that (2) 12" pipes will extend under the temporary grass overflow entrance. Contours on the plan indicate that the top of this pipe will be exposed for approximately 20 feet. Additionally, the pipe trench detail on Sheet 5 indicates a deeper minimum pipe cover. HW recommends revising the layout and grading to ensure that the pipes have adequate coverage. H:Tr(j1tms12018118065 N Andov"Oti-CalIll8065L'I'iiistees\Reportlln1104_2rnd Peer revieev_Stormwater Rev ietv_Trustecs.duex i Town of North Andover November 4, 2019 Page 5 of 8 The Applicant has adequately addressed this comment. No further comment is needed. 3. Standard 3 requires that the annual recharge from post-development shall approximate annual recharge from pre-development conditions. a. In accordance with MassDEP `there must be at least a two-foot separation between the bottom of the infiltration structure and the seasonal high groundwater table (ESHGW).' In the stormwater report provided, the test pit performed for Infiltration Basin #1, is noted as being at elevation 209, which is only one foot below the bottom of the basin at 210 and is not consistent with Appendix V. Soil Logs. Additionally, the Stormwater narrative indicates that all test pits for Infiltration Basin 2 have an ESHGW at elevation 204, which is not consistent with Appendix V. Soil Logs. HW recommends that the Applicant verify the test pit information, narrative, and site plans are consistent and that a minimum of two feet of separation above the ESHGW table is provided. The Applicant has revised the bottom of the basin to maintain the required two feet of separation. No further comment is needed. b. As noted above HW recommends that the Applicant revise the calculations to utilize the exfiltration rate for HSG C as listed in the Rawls Rate table. The Applicant has adequately clarified the exfiltration rate utilized. No further comment is needed. 4. Standard 4 requires that the stormwater system be designed to remove 80% Total Suspended Solids (TSS) and to treat 0.5-inch of volume from the impervious area for water quality. a. The Applicant has indicated in the Stormwater Report that a grass swale will be utilized as the first portion of the treatment train and has utilized a 70% TSS removal for the swale. According to MSH Volume 2, Chapter 2, page 73 the TSS removal for Grassed Channel should be 50% with adequate pretreatment. HW recommends that the treatment chain be revised or terminology coincide with the swale being used for treatment. The Applicant has adjusted the TSS removal rates as requested. No further comment is needed. b. In accordance with Section 7.2 D. b) and c) of the Stormwater Regulations the Applicant should provide the water quality volume for the '/Z inch storm, HW recommends that the Applicant provided the required calculations in accordance with the MSH Volume 3, Chapter 1, page 32. The Applicant has provided the required WQV calculation. No further comment is needed. c. It appears that the Applicant has not provided sizing calculations for the grass treatment swale. HW recommends that the Applicant provided additional information for the treatment swale in accordance with Volume 2, Chapter 2, page 77 of the MSH, HVi-giccl%12013\1 K065 N Andover On-Caihl 8065L Tmsleas\Repori1191104 2nd Peer review_S1orm%valcr Review Truslees,duc x Town of North Andover November 4, 2019 Page 6 of 8 The Applicant has included the grass swale in the HydroCAD model. No further comment is needed. 5. Standard 5 is related to projects with a Land Use of Higher Potential Pollutant Loads (LUHPPL). a. A small parking area is not considered a LUHPPL, therefore Standard 5 is not applicable to this project. No further comment is needed. 6. Standard 6 is related to projects with stormwater discharging into a critical area, a Zone 11 or an Interim Wellhead Protection Area of a public water supply. a. The site does not appear to discharge to a critical area therefore, Standard 6 is not applicable to this project. No further comment is needed. 7. Standard 7 is related to projects considered Redevelopment. a. The proposed project increases impervious area therefore is considered a new development and Standard 7 is not applicable. No further comment is needed. 8. Standard 8 requires a plan to control construction related impacts including erosion, sedimentation or other pollutant sources. a. The Applicant has included Erosion and Sediment Control Notes in the stormwater report. HW recommends that the erosion and sediment control notes be included on the site plans for use by the contractor. The Applicant has added the erosion control notes to the site plan as recommended. No further comment is needed. b. In accordance with Section 8.0 of the Stormwater Regulations, if a SWPPP is required per the NPDES General Permit the Applicant is required to submit a complete copy of the SWPPP as part of its application. HW recommends that the Applicant provided the SWPPP to the Town for review and verify that the Erosion and Sediment Control Criteria listed under Section 8.2 of the Stormwater Regulations is clearly referenced. The Applicant is prepared to provide the SWPPP 14 days prior to land disturbance. The Planning Board and/or the Conservation Commission may choose to make this a condition of approval. c. In accordance with 8.2 a) of the Stormwater Regulations the Applicant should minimize the total area of disturbance and minimize unnecessary clearing and grading from all construction sites. HW recommends that the Applicant provide a clear limit of disturbance on the Site Plans. The Applicant has clarified the limit of disturbance and acknowledge that approximately 10 trees at the entrance will need to be removed. No further comment is needed. I1:1Pr(jects12014118005 N''Andover On-CaM[$fibSL'I'ntsleeslftel�ortll9!1€14 2nd Peer review- Stonirwater Review_Trustees.doex i Town of North Andover November 4, 2019 Page 7 of 8 d. In accordance with Section 8.2 j) BMPs to be used for infiltration after construction shall not be used as BMPs during construction. The Stormwater Report indicates that the infiltration basins will only be monitored and cleared after construction practices are complete. HW recommends that further protections be taken during the construction period. The Applicant has provided additional procedures for the contractor to follow regarding the stormwater basin. No further comment is needed. e. HW recommends the silt sock erosion control layout be adjusted near the Chickering Road entrance to ensure it surrounds all disturbed areas. Additionally, HW recommends that the Applicant verify that no low points are created that allow stormwater to overtop into the wetlands. The Applicant has extended the erosion control barrier and addressed the concern of potential runoff into the wetlands. No further comment is needed. f. HW recommends that the Applicant indicate that the siltation barrier will be staked into the ground on the detail provided, The straw wattle installation detail provided on Sheet 5 includes stakes. No further comment is needed. 9, Standard 9 requires a Long-Term Operation and Maintenance (O & M) Plan to be provided. a. In accordance with Section 9.1 a) the O&M Plan shall be a stand-alone document. HW recommends that the O&M plan in the Stormwater Report be provided as its own document and include the signatures of the property owners, as well as, names and addresses of persons responsible for operations and maintenance. The Applicant has provided a stand-alone O&M Plan. The Planning Board and/or Conservation Commission may choose to require the property owner to sign the O&M Plan prior to land disturbance. b. HW recommends that the Applicant include a simple sketch that illustrates all stormwater practices that require maintenance to be utilized by the property owner. The Applicant has provided the simple sketch as recommended. No further comment is needed. c. The Stone Diaphragm is currently not included in the O&M Plan. HW recommends that the Applicant provide additional information related to the operations and maintenance of the stone diaphragm, as well as distinguish between maintenance of the planted rain garden I treatment swale and the grass swale. The Applicant has provided additional guidance regarding the stormwater practices proposed for the project site. No further comment is needed. 10. Standard 90 requires an Illicit Discharge Compliance Statement to be provided a. The Applicant has included an illicit discharge statement that has a location to be signed by the property owner. HW recommends that the statement be signed by the property owner prior to land disturbance. The Planning Board and/or Conservation Commission may choose to require fifth-Ujcc02 0 1 81 1 8 0(15 1\1 Andover On-Cal h19065L Trimees\Repork191 104_2nd Peer review_Sionlnvater Review 'T'rustees.docx i Town of North Andover November A, 2019 Page 8 of 8 the property owner to sign the illicit discharge statement prior to land disturbance. 11. Miscellaneous Comments Regarding the Site Layout a. The proposed plans have conflicting information about the extent of the overflow parking, with the area on Sheet 3 different from the area on Sheet 6. The overflow parking indicated on Sheet 6 appears to overlap with Infiltration Basin #2. HW recommends having consistent information throughout the sheets. The Applicant has revised the documents for consistency. No further comment is needed. b. The Applicant is proposing to save some of the existing site trees. HW recommends utilizing tree protection fencing to ensure construction does not extend too close to the roots or canopy of these trees. The Applicant has provided a tree protection detail on Sheet 5. No further comment is needed. Conclusions HW is satisfied that the Applicant has adequately responded to and addressed our initial comments regarding the proposed stormwater management. The Applicant is advised that provision of these comments does not relieve him/her of the responsibility to comply with all Town of North Andover Codes and By-Laws, Commonwealth of Massachusetts laws, and federal regulations as applicable to this project. Please contact Janet Bernardo at 857-263-8193 or at iernardo@horsleywitten.com if you have any questions regarding these comments. Sincerely, HORSLEY WITTEN GROUP, INC. \ j Janet Carter Bernardo, P.E. Senior Project Manager CC: Conservation Administrator HAProjects120MI8065 N'Andover Ou-Ca11118Ufi5L'rntsteeslRepor11191104 2nd 11eerrevian—Slo"t4water RcView_TrustersALwx 12/6/2019 Town of North Andover Mai[-Trustees Site Visit-Follow-up Comments NOR ' l AN'D�OVER Massachuse�[s Monica Gregoire<rngregoire@northandoverma.gov> Trustees Site Visit - Follow-up Comments Janet Bernardo <jernardo@horsleywitten.com> Fri, Dec 6, 2019 at 9.58 AM To: Monica Gregoire <mgregoire@northandoverma.gov> Cc: Amy Maxner<amaxner@northandoverma.gov>, Jean Enright<jenright@northandoverma.gov>, John Borgesi <jborgesi@northandoverma.gov> Good morning Monica, The proposed design reduces flows and volumes to the wetland on the north side of the project adjacent to Chickering Road. The design point that was analyzed by the Applicant is this wetland. In my opinion the proposed design will not create additional flooding issues along Chickering Road or to the neighbors north of the infiltration basin. I agree with John Borgesi that requesting the Applicant to work with MassDOT to clean the culvert would be beneficial to the Applicant as well as the neighbors. If the culvert is clogged the existing wetland may begin to increase in size on the Trustees property as well as the adjacent abutters. If the roadway currently has flooding issues cleaning the culvert is a reasonable request. Hope this helps, Janet Janet Carter Bernardo, P.E. Horsley Witten Group Office: 857-263-8193 [Quoted text hidden] All email messages and attached content sent from and to this email account are public records unless qualified as an exemption under the Massachusetts Public Records Law. [Quoted text hidden] https://mail.google.comlmaillu/0?ik=dadd1872e7&view=pt&search=all&permmsgid=msg-f`/`3A1652182830193088413&slmp[=msg-f°/`3A1 6521 828 301..- 1/1 1 HANCOCK ASSOCIATES `iurvevors F'Ilgineers I Scientists 22587 Ms. Monica Gregoire, Staff Planner October 29, 2019 Planning Department Town of North Andover 120 Main Street North Andover, Massachusetts 01845 Subject: Trustees of Reservations The Stevens-Coolidge Place Chickering Road North Andover, MA 01845 Dear Ms. Gregoire and Board Members; Hancock Associates acting on behalf of The Trustees of Reservations, is please to submit the following documents for your review: • Letter to the Board from Elizabeth Keary Soule,Trustees' Project manager, in response to the first Public hearing on September, 17, 2019 • Letter to the Board from Katherine K. Macdonald, Director of The Stevens-Coolidge Place, in response to the first Public hearing oar September, 17, 2019 • Letter to the Board from Hancock Associates acting on behalf of The Trustees of Reservations, in response to review comments made by Horsley Whitten dated September 17, 2019. • Letter to the Board from Hancock Associates acting on behalf of The Trustees of Reservations, in response to review comments made by The Engineering Group dated September 17, 2019. • Letter to the Board from Hancock Associates acting oil behalf of The Trustees of Reservations, in response to review comments made by Fire Chief Lt. Michael Beirne dated September 18, 2019. • Letter to the Board from Hancock Associates acting on behalf of The Trustees of Reservations, in response to review comments made by Ms. Amy Maxner,North Andover Conservation Agent, dated August 26,2019. • Letter to the Board from Hancock Associates acting on behalf of The Trustees of Reservations, in response to the Mass DEP-NERD comments posted on-line by Mr. Gary Bogue on September 26, 2019, • Revised Special Permit Application. • Revised Plan set dated October 29,2019. • Revised Stormwater Management Report. 1f you have any questions or concerns, please heel free to call Deb Colbert, P.E. at Hancock Associates, 978-777-3050 x410. Sincerely, Deborah L. Col Senior Project Manager Hancock Associates "185 Centre Sheet Danvers, MA 01923 I V 978-777-:3050 F: 978-7M-7816 HancockAssociares.00111 .. 1i1r,11415lEi�?':,tlY�) Town of North Andover Planning Board 120 Main Street North Andover, MA 01845 October 29,2019 North Andover Planning Board, The Trustees has been asked to address concerns from neighbors,shared at our preliminary Planning Board hearing,September 17, 2019.These issues were summarized as: • Stormwater management • Location of Visitor Center • Traffic and noise relating to visitation and events Stormwater Management Plan The proposed Stormwater Management system, by Hancock Associates is designed to improve the existing drainage conditions by collecting and infiltrating the runoff from the proposed gravel drive and parking lot to meet the Town of North Andover's drainage requirements and the Massachusetts Stormwater Standards. Hancock Associates and the Trustees look forward to continuing working with the Planning Board and peer reviewers to confirm that the designed system meets all required regulations. Visitor Center Location The locations of the proposed 60 car parking lot and Visitor Center have evolved over time in response to both site conditions as well as feedback received from our Wood Lane nelghbors. The initial Vision Plan(page 4), drawn in August 2017 by Gary Smith Design, located the parking lot in the Ox Pasture,This location was determined to be unsuitable due to access issues as well as the condition of the pasture as a wet meadow, This plan also illustrates the initial proposal to repurpose an existing building, 5 Wood Lane, as a Visitor Center, An in-progress master plan (page 5), by Mikyoung Kim Design in April 2019,shows the parking located In Downing Field.This location was determined unsuitable due to concerns we heard from Wood Lane neighbors of the proximity of the lot to their homes,We understood that this location would mean a loss by these neighbors of the visual of the meadow behind their houses.This drawing also Illustrates the separation of the Visitor Center(repurposed tractor shed)from 5 Wood Lane, which was determined to be not suitable for public orientation and workshop programs. In working with neighbors, The Trustees also heard a concern that the proposed location of this redesigned Visitor Center, as well associated circulation, was too close to the shared property line. it was requested that the Visitor Center be moved farther from Woad Lane and that a vegetated buffer be used between the Visitor Center and 1 i lr ltllllluilsSl;rti''i. �Ilelluau 4-1 l'I Lit i'}(ld,U!.1 i 1 ti I i!t rl l si v a S.or{I the property line as well as at the end of Wood Lane to close access to The Stevens-Coolidge Place through Wood Lane. F The final Master Plan (page 6), by Mikyoung Kim Design In June 2019 illustrates the relocated parking lot,the relocated Visitor Center to the far side of 5 Wood Lane,as well as an enhanced vegetated buffer. i The diagram below overlays the current proposal of entry drive, parking and circulation with the June 2019 Master Plan: Y A41 o, � K \•� 4 � . v 'Illf E' 7 A. dig , 3. � � �,• : ,".. to } r1 The current proposal refines the locations of the entry drive and parking area in response to the 100' wetland setback. Both elements hug the offset line to limit impact to existing fields.The parking lot continues to butt against existing stone walls and mature vegetation to limit visibility of the lot by abutters.The Visitor Center, located between the parking lot and gardens,acts as a first stop and 2 1 f71 kou .t vt 04f1;� orientation space for our visitors. It's a physical connector, routing visitors from the parking area to the historic house and gardens.The current design shows proposed circulation meeting existing circulation as the design of the garden expansions is currently in-progress.The center and associated circulation skirt Helen's Meadow, slated for augmentation as a pollinator meadow. Maintaining Helen's Meadow as a large, open,ecologically significant field speaks to the history of the site as a gentleman's farm and is an opportunity to educate our visitors on the value and beauty of pollinators to our larger community. The location of the Visitor Center is also tied to the parking lot and to 5 Wood Lane through regulatory distance limitations and utility connections.The Visitor Center must be within 200'of the ADA parking to meet accessibility requirements.To avoid an expensive addition to 5 Wood Lane, the current design proposes that the accessible restrooms in the Visitor Center support the users of 5 Wood Lane, limiting the distance between the two structures. Finally, the Visitor Center must be in proximity to both 5 Wood Lane and Wood Lane itself due to the need to tie into existing utilities.The center ties into existing sewer and power lines that end at the terminus of Wood Lane.A water line will run from 5 Wood Lane. Given the constraints of overall flow and sequencing, existing site conditions, regulations,and utilities, the'Trustees believes the current proposal is the preferred design. However, we are open to suggestions that might better suit all Interested parties while meeting project goals and requirements. Visitation and Events The Stevens-Coolidge Place Director, Kathy Macdonald addressing questions regarding visitation and management of events at the property. Please find that memo attached. The Trustees is grateful for the ongoing communication with our neighbors on this project and are hopeful that we can continue to respond accordingly to their concerns,with guidance from the Planning Board. Sincerely, Elizabeth Keary Soule,ASLA Structures and Landscapes project Manager 3 .............. ...... ...... Pee R.-,ac fk-,dc-,A Evrar,env �e North Andover a F. perQvated Town Common Helen': Meadsc!. 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R3 3 a x s N 7 - The Trustees i � k,t' Katherine K.Macdonald,Director ' F, The Stevens-Coolidge Place 113 Andover Street,North Andover,MA 01845 October 29, 2019 Town of North Andover Planning Board 120 Main Street North Andover, MA 01845 RE:0 Chickering Rd., 137 Andover 5t.,The Trustees of Reservations Dear Planning Board; Thank you for the opportunity to provide additional information on The Trustees operations at The Stevens-Coolidge Place. The Trustees has owned and stewarded The Stevens-Coolidge Property and been a member of the North Andover Community for 57 years, Founded in 1891, The Trustees cares for 118 properties across Massachusetts, including 11 public gardens: Castle Hill on the Crane Estate in Ipswich, Naumkeag in Stockbridge, and The Bradley Estate in Canton, to name a few, Our mission is to preserve, for public use and enjoyment, properties of exceptional scenic, historic, and ecological value in Massachusetts, A key element in our mission is for our properties to be used "for public use and enjoyment". As with many public gardens and parks, engaging the general public in programs, events, and activities Is a current strategy to build audience and support, At The Trustees, our goal is to build The Trustees of the future and sustain our properties. Estimated program participation for 2019 is approximately 34,000 participants, which averages to 93 visitors per day.These include family programs, education programs, skill building (horticulture), and the many events that North Andover residents enjoy as part of their community. Our growth expectation is 10% a year. Of the events that we offer to the public, only 3.58%offer alcoholic beverages. in the case of these events, The Stevens-Coolidge Place pursues an alcohol license per North Andover regulations. All liquor permits are applied for with the Board of Selectmen and approved, accompanied by a map of the event location, As Director of The Stevens-Coolidge Place, I joined the organization in June. Since that time,this administration has responded to neighbors' concerns regarding stage, noise, audience seating, i I i and portable toilet locations. The diagram below illustrates where we have moved our event activities away from property lines. w S(GNAGE'"ADO ��. �r nta a The Stevens-Coolidge Place works very closely with the Town Government of North Andover to comply with permits and licenses. We have an Entertainment License with the Town of North Andover. This license permits The Stevens-Coolidge Place to host events between the hours of 8 am and 9 pm, Monday through Sunday. (Recently, the end time changed to 7 pm, due to EEE,) All liquor permits are applied for with the Board of Selectmen and approved, accompanied by a map of the event location. When requested by the Board of Selectmen,The Stevens-Coolidge Place utilizes police details to ensure the safety of our visitors and neighbors. Individuals are not allowed to bring alcoholic beverages on the property. The site has hosted 4 wedding ceremonies in 2019, none larger than 50 people. We do not permit wedding receptions to be hosted on site. Our private rental enterprise is minimal and solely comprised of these small ceremonies, bridal showers, or birthday parties. Thank you again for your consideration. Please let me know any additional questions. Sincerely, Katherine K. Macdonald Director z I ANCOCK ASSOCIATES Ellgincers I ,eientisys 22587 October 29, 2019 Ms. Monica Gregoire, Staff Planner Plamiing Department Town of North Andover 120 Main Street North Andover, Massachusetts 01845 Subject: Trustees of Reservations The Stevens-Coolidge Place Chickering Road North Andover, MA 01845 Dear Ms. Gregoire and Board Members: Hancock Associates acting on behalf of The Trustees of Reservations, is pleased to offer the following responses to review comments made by Horsley Whitten dated September 17,2019. We have included their comments with our responses in bold following for ease of review. 1) Standard 1 states that no new stormwater conveyances may cause erosion in wetlands of the Commonwealth. a. The majority of the Project site currently sheet flows from south to north, toward an existing wetland next to Chickering Road labeled as Discharge Point 1 (DP 1). HW recommends that the boundary delineation be verified, specifically in the vicinity of the proposed Welcome Center, the watershed areas EX 1 and PR1 may need to be further subdivided to verify that the proposed improvements including the Welcome Center and the area to the east of the Welcome Center do not increase the stormwater runoff to the north of the limit of work. Response: Hancock believes the watersheds impacted b the project have been properly P ��' P Y P J P P Y delineated and that no further division its warranted. The small portion of the proposed roof runoff which is not captured in this design is insignificant compared to the watershed within which it falls. b. The Applicant is intending to maintain DPI at the northern corner of the site. Best management practices and two infiltration basins are proposed to provide treatment before discharging and are connected by a grass swale. HW recommends that the Applicant evaluate installing riprap at the outlet to the proposed swale to minimize erosion along the edge of the overflow parking area. Response: Riprap has been added in this location to the revised plans. c. HW recommends that the Applicant provide riprap sizing calculations for the outlet from Infiltration Basin#2 prior to discharging towards the existing wetland resource area. Response: The stormwater design has been revised. A riprap siring calculation utilizing the Natural Resources Conservation Service (NRSC) Design Guideline MD #G has been added to the stormwater report and the plans updated to reflect the correct sizing. 185 Centre Street Danvers, MA 01923 V. 978-777-3050 F: 978-774-7816 I I-lancockAssociates.com r I-f;r�`,( 4 }}.'I } 1-i11f`1C.1,. IC ANCOCK A-SSOCI 1TFS Stirveyors Uingineers ( Scientists 22587 d. The narrative provided in the Stormwater Report states under Standard 1, that the stormwater system will provide water quality treatment via rain gardens. HW recommends that the Applicant adjust the narrative to be consistent with the proposed design utilizing infiltration basins to manage and treat the stomiwater runoff. Response: Standard 1 language has been revised.The stormwater system will provide water quality treatment and management via a stone diaphragn3,drainage Swale and an infiltration basin. 2) Standard 2 requires that post-development runoff does not exceed pre-development runoff off- site, for a redevelopment project per MassDEP this standard must be met to the inaximum extent practicable. The Applicant has increased impervious area on the site and provided two infiltration basins to prevent past-development runoff from exceeding pre-development runoff, however, HW has the following recommendations regarding the HydroCAD model; a. In accordance with Section T2 B, b) of the Stormwater Regulations the Applicant has provided analysis for the 2-, 10-, 25-, and 100-year storm events. HW recommends the Applicant utilize the 24-hour storm event provided in the North Andover Stormwater Management and Erosion Control Regulations for the 100-year storm event as well as use a Type III rainfall, Response: The Stormwater analysis has been revised to consider a Type III rainfall and an 8.6 inch 24-hour 100-year storm event in accordance with the North Andover regulations, b. The Applicant has noted in the Stormwater narrative under Standard 2 and Standard 3 that the soil logs indicate that the site consists of hydrologic soil group (HSG) C soils and therefore chose an exfiltration rate of 1.02 inches per hour(iph) as indicated on the Rawls Bate Table. However, in accordance with the Rawls Rate Table found in the NISH Volume 3, Chapter 1, page 22, HSG C soils have an exfiltration rate of 0.17 or 0.27 iph. HW recommends that the Applicant clarify its choice of exfiltration rate and adjust the model as needed, Response: Although the NRCS Web Soil Survey classifies the soils as Class C, the test pits results indicate Sandy Loam soils at the bottom of the infiltration basins; therefore, according to the Rawl's Rate listed for Class B Sandy loam, ail exfiltration rate of 1.02 iph. c. In accordance with Section 7.2 B. b) of the Stormwater Regulations the Applicant is required to provide the analyses for the inch storm. HW recommends that the Applicant provide these additional calculations and verify that the proposed design attenuates the inch storm event. Response: Calculation for the water quality volume have been added to the revise Stormwater Report demonstrating compliance with a P storm event utilizing five (5) riprap check dams in the drainage swale. 185 Centre Street Danvers, MA 01923 V: 975-777-3050 F: 978-774-7816 HancockASsadates.com I �'; I(.W], (.I ii 1IM''I i :)I•',1 �, I NV: 1:,;, 1 1I; 1II `v'tih I<`,'P( M,1 #�'I<11`�JE.�I 1 )H. [Nile I:Jvl 1,111 HANCOCK ASSOCIATES SL11'1'C'yors I Engineers f ScientisLs 22587 d. HW recommends that the Applicant provide the flow paths for the Times of Concentration(Tc) on the drainage maps, Response: The drainage maps have been revised to include the flow paths used in calculation Times of Concentration (Tc). e, Tile proposed Site Plan indicates invert elevations, and pipe lengths that are inconsistent with the pipe elevations and lengths in the Stormwater Report. Furthermore, the Detail Sheet labels the storniwater basins as detention basins while the Site Plans and HydroCAD model label them as infiltration basins. HW recommends that all elevations and labels between the drawings and the report /calculations be reviewed and adjusted as needed for consistency, Response: The plans and calculations have been revised to correct inconsistencies. f. The outlet control devices for Infiltration Basin #1 and #2 are not consistent between the plans and the HydroCAD model. HW recommends that the Applicant review and revise for consistency, Response: The plans and calculations have been revised to correct inconsistencies with regard to the design of the outlet structure. g, The Applicant has provided Site Plans and Layout and Material Plans that are not consistent. HW recommends revising the plan set for consistency and to avoid any confusion on the types of stortnwater practices being proposed, For example, the proposed plan indicates that a grass treatment Swale is located to the north of the parking lot on Sheet d. On Sheet 6 this is referred to as a 9-inch deep rain garden. Additionally, the dimensions between the grass drainage swale detail on Sheet 5 and the drainage swale detail on Sheet 7 are inconsistent. The 6-foot width indicated on the detail on Sheet 7, is not enough room for a 2-foot depth at a 3:1 slope. HW recommends revising the details and having consistent information throughout the plans, Response: The plans have been revised to address these inconsistencies. h. The Site Plans indicate an emergency overflow in the details for Berm at Detention Pond#1 and#2 on Sheet 5. HW recommends that more information be provided about these Overflow Structures pertaining to size and location. Response: The emergency overflow has been clarified on the plan view and detail sheet with dimensions and elevations. i, The Site Plans indicate that (2) 12"pipes will extend under the temporary grass overflow entrance, Contours on the plan indicate that the top of this pipe will be exposed for approximately 20 feet, Additionally, the pipe trench detail on Sheet 5 indicates a deeper minimum pipe cover, HW recommends revising the layout and grading to ensure that the pipes have adequate coverage, '185 Cf'lltr0 Street Danvers, MA 0-1923 V, 978-Y7?-3050 F- 978-774.7816 Hancoc kAssocimes.corn I ii..1. C Hl ii�`�! )1i'= � ,�/1F�I'll .; f ;rs. t`�l L f,r , [ i is [ l ,i, ,;i HA COC., ASSOCINITS Surveyors Engineers I Scientists 22587 Response: The manufacturer(ADS) recommends at least 12 inches of cover to support the anticipated Loading. The generic pipe detail has been modified to reflect this manufacturer recommendation for ADS N-12 pipe, 3) Standard 3 requires that the annual recharge from post-development shall approximate annual recharge from pre-development conditions. a. In accordance with MassDEP `there must be at least a two-foot separation between the bottom of the infiltration structure and the seasonal high groundwater table (ESHGW).' In the stormwater report provided, the test pit performed for Infiltration Basin O, is noted as being at elevation 209, which is only one foot below the bottom of the basin at 210 and is not consistent with Appendix V. Soil Logs. Additionally, the Stormwater narrative indicates that all test pits for Infiltration Basin 2 have an ESHGW at elevation 204, which is not consistent with Appendix V. Soil Logs, HW recommends that the Applicant verify the test pit information, narrative, and site plans are consistent and that a minimum of two feet of separation above the ESHGW table is provided. Response: Site plans have been revised to provide a minimum of two feet of separation above the ESHGW.Test Pit#3 located at the uphill extent of Proposed Infiltration Basin has ESGW a 205.The bottom of the basin has been revised to reflect the gradient nature of the ESHW providing the required 2' separation. b. As noted above HW recommends that the Applicant revise the calculations to utilize the exfltration rate for HSG C as listed in the Rawls Rate table, Response: The test pit soils encountered are not indicative of HSG C soils. Sanely Loam soils were encountered and therefore we designed based on a Rawl's Rate of 1.02 inches per hour, 4) Standard 4 requires that the stormwater system be designed to remove 80%Total Suspended Solids (TSS) and to treat 0.5-inch of volume from the impervious area for water quality, a. The Applicant has indicated in the Stormwater Report that a grass swale will be utilized as the first portion of the treatment train and has utilized a 70%TSS removal for the swale. According to MSH Volume 2, Chapter 2, page 73 the TSS removal for Grassed Channel should be 50% with adequate pretreatment. HW recommends that the treatment chain be revised or terminology coincide with the swale being used for treatment. Response: The treatment chain TSS calculation have been revised to reflect a 50% removal rate for the swale. b, In accordance with Section 7.2 D. b) and c) of the Stormwater Regulations the Applicant should provide the water quality volume for the Va inch storm, HW recommends that the Applicant provided the required calculations in accordance with the MSH Volume 3, Chapter 1, page 32. Response: The Stormwater Report has been revised to include the required Water Quality Volume (WQV) caleldation. 185 Centre Street Danvers, NIA 01923 1 V: 978-.777-3050 1 F: 978-774.78'16 I-IancockAssodates,con-i (1i=I, ( 111 t_NI`,I I )I"I:) I_)i".J"Il/i 1�`', a"v1i11;11'1(1;('rli" d �, 111 vljJ;t)1,"IT( W'1, 1 (*1, NIA Al I !,J, 1`,111 HANCOCK ASSOCIATES illl'VCti`()i'ti I l'Ingineers I Scientists 22587 e. It appears that the Applicant has not provided sizing calculations for the grass treatment swale. HW recommends that the Applicant provided additional information for the treatment swale in accordance with Volume 2, Chapter 2, page 77 of the NISH. Response: The Stormwater Report,HydroCAD model and plans have been revised to include sizing Calculations for the treatment swale. 5) Standard 5 is related to projects with a Land Use of Higher Potential Pollutant Loads (LUHPPL). a, A small parking area is not considered a LUHPPL, therefore Standard 5 is not applicable to this project. Response: Comment acknowledged. 6) Standard 6 is related to projects with stornwater discharging into a critical area, a Zone 11 or an Interim Wellhead Protection Area of a public water supply. a. The site does not appear to discharge to a critical area therefore, Standard 6 is not applicable to this project. Response: Comment acknowledged. 7) Standard 7 is related to projects considered Redevelopment. a. The proposed project increases impervious area therefore is considered a new development and Standard 7 is not applicable. Response: Comment acknowledged. 8) Standard 8 requires a plan to control construction related impacts including erosion, sedimentation or other pollutant sources. a. The Applicant has included Erosion and Sediment Control Notes in the stormwater report. HW recommends that the erosion and sediment control notes he included on the site plans for use by the contractor. Response: Erosion and sediment control notes have been added to the revised plans. In accordance with Section 8.0 of the Stor nwater Regulations, if a SWPPP is required per the NPDES General Permit the Applicant is required to submit a complete copy of the SWPPP as part of its application. HW recommends that the Applicant provided the SWPPP to the Town for review and verify that the Erosion and Sediment Control Criteria listed under Section 8.2 of the Stormwater Regulations is clearly referenced. Response: The final SWPP will be developed with the chosen site contractor prior to filing for coverage cinder the Federal CGP per EPA NPDES requirements. A, copy of the will be forwarded to the Town for review. We would welcome this as a condition of any approval, b, In accordance with 8.2 a) of the Stormwater Regulations the Applicant should minimize the total area of disturbance and minimize unnecessary clearing and grading from all construction sites. HW recommends that the Applicant provide a clear limit of disturbance on the Site Plans. 185 Centre Street I Danvers, MA 01923 1V 978-777-3050 F=; 978-774-7816 I Hancocl<Associates.con) r'I,',I::I F1, )1;C),-; , I: f 11 t,r/;;I ll."'I'i..'I;i I'11,F ;t I- i(if 1. (vli !' �_E_fVl N i I 1 1 � BANS OCK _A SOCIA'1.k5 sut-vC'}'Ui's l.11in'in['l'i'S I Scientists 2258'7 Response: The total area of disturbance is delineated by the erosion controls oil the revised plans. c. In accordance with Section 8.2 j) BMPs to be used for infiltration after construction shall not be used as 13MPs during construction. The Stormwater Report indicates that the infiltration basins will only be monitored and cleared after construction practices are complete. HW recommends that fiirther protections be taken during the construction period. Response: Due to tire nature of the grades on site and the need to work the area just up gradient of the wetlands, the area of the Infiltration Basin must be utilized for temporary sediment control during construction.We have added instructions to Standard 8: Construction Period Pollution Prevention and Erosion& Sedimentation Control(in the Stormwater Report)and the Erosion and Sediment Control Notes(on the plait),detailing the procedures for preparation and stabilization of the up gradient areas prior to final grading of Infiltration Bashi. A temporary berm will be utilized during the initial construction sequencing without removal of vegetation or soils from the future basin bottom.Once up gradient areas are graded and stabilized the basin bottom will be excavated. This excavation will remove any sediment transported to the area during the initial stages. d. HW recommends the silt sock erosion control layout be adjusted near the Chickering Road entrance to ensure it surrounds all disturbed areas, Additionally, HW recommends that the Applicant verify that no low points are created that allow stormwater to overtop into the wetlands. Response: The silt sock erosion control has been extended. The stormwater design and grading has been designed so as not to create any low points or runoff into the wetland. A note has been added to the Standard 8: Construction Period Pollution Prevention and Erosion& Sedimentation Control(in the Stormwater Report) and the Erosion and Sediment Control Notes(on the Plan)to add erosion control measures at the Intersection and along Chielcering Road(if warranted)to ensure runoff control e, HW recommends that the Applicant indicate that the siltation barrier will be staked into the ground on the detail provided. Response: The erosion control detail has been revised, 9) Standard 9 requires a Long Term Operation and Maintenance (O & M) Plan to be provided. a. In accordance with Section 9.1 a) the O&M Plan shall be a stand-alone document. HW recommends that the O&M plan in the Stormwater Report be provided as its own document and include the signatures of the property owners, as well as, names and addresses of persons responsible for operations and maintenance. Response, This document has been created and provided to the Applicant. b. HW recommends that the Applicant include a simple sketch that illustrates all stormwater practices that require maintenance to be utilized by the property owner. '185 Centre Street Danvers, MA 01923 V.' 978477-3050 I E 978-774-78'16 HancockAssociates.corn r}�i '1i7111 I, JT VNWi I, !'I"W'Jl ! IUr'), h;il'� 1\11, Iv11 I - ANCOCK ASSOCIAT17-s 5111'vc')'i)r5 I 1'Fi incer's I ,Scientists 22587 Response: The sketch has been added to the O & M. c. The Stone Diaphragm is currently not included in the O&M Plan. HW recommends that the Applicant provide additional information related to the operations and maintenance of the stone diaphragm, as well as distinguish between maintenance of the planted rain garden/treatment swale and the grass swale. Response: The O & M has been revised to include this information. 10) Standard 10 requires an Illicit Discharge Compliance Statement to be provided. a. The Applicant has included an illicit discharge statement that has a location to be signed by the property owner. HW recommends that the statement be signed by the property owner prior to land disturbance. Response: Comment acknowledged. 11) Miscellaneous Comments Regarding the Site Layout a. The proposed plans have conflicting infonnation about the extent of the overflow parking, with the area on Sheet 3 different from the area on Sheet 6. The overflow parking indicated on Sheet 6 appears to overlap with Infiltration Basin #2. HW recommends having consistent information throughout the sheets. Response: Drawings have been revised to address this inconsistency. b. The Applicant is proposing to save some of the existing site trees. HW recommends utilizing tree protection fencing to ensure construction does not extend too close to the roots or canopy of these trees. Response: Tree protection detail has been added to the revised plans. If you have any questions or concerns,please feel free to call Deb Colbert, P.E, at Hancock Associates, 978-777-3050 x410. Sincerely, Deborah L. Colbert,P.E. Senior Project Manager Hancock Associates 185 Centre Street Danvers, MA 01923 V.' 978-777-3050 !=: 978-774-7816 Hancod<Associates.corn E �.r (_� ��-_.4�/�':� � }f,'�_� � lrl,,AI1��:�-t�, �`/�i�ti:i.li( P,;t 1��C_t� �, ��`�� 1i ..,��i r}'S li i� E�'}�;�� .f� I .1 �. 1 r7 I ` i - ( f��. f�.1, � d I HANCO_CK ASSOCIA S111-veyol's I 1'',k1gii1cers I Scivnlis[s 22587 October 29, 2019 Ms. Monica Gregoire, Staff Planner Platuiing Department Town of North Andover 120 Main Street North Andover, Massachusetts 01845 Subject: Trustees of Reservations The Stevens-Coolidge Place Chickering Road North Andover, MA 01845 Dear Ms. Gregoire and Board Members; Hancock Associates acting on behalf of The Trustees of Reservations, is pleased to offer the following in responses to review comments made by The Engineering Group dated September 17, 2019. We have included their comments with our responses in bold following for ease of review, I) The Record Conditions Plan (sheet 2 of9) shows what appears to be an existing right-of-way that cuts through the center of the Trustees property. Based on North Andover's GIS website, this is a public right-of-way associated with Wood Lane. The Site Plans should consistently show the limits of this right-of-way, label the street, and add setbacks as appropriate, Response: The Record Conditions Plan has been revised which elini-inates this ROW. Elimination was determined from a 1.931 town vote to discontinue"the unused portion of Wood Lane from Andover Street to a point to the North along the Lane beyond the place where the new State Highway will cross it". See Article 20 in the attached record, 2) TEC recommends a traffic peer review for the proposed intersection on Chicke►ing Road, Response: A Traffic Study has been prepared by Vanasse & Associates and submitted to the Town for review. 3) The proposed driveway connection to Chickering Road will likely require the ;!fling of a MassDOT Access Permit Application, Response: The Applicant will be filing a MassDOT access permit. 4) The Applicant should note the width and radii of the proposed Entrance/Exit, Response: The plans have been revised to show this information. 5) The turnaround area at the end of the proposed parking is proposed at 12-feet wide. Turning templates should be provided to show that the largest design vehicle can maneuver if) this area. 185 Centre Street Danvers, MA 01923 ( V 978.777 305t1 F: 978-774-7816 HanCOcOssoclates.coni .'i1 ;i I �s: 1 )I �'1`'. -�!' s i, I'll .i .I r I c )I, I !';;'li`J I I ( I�lt�.3. ti,l 1 ,:�, N;i i HANCOCK ASSOCIATES Surveyors I Engineers I Scientists 22587 Response: The plans have been revised to shore a Swept Path Analysis considering North Andover Fire Department equipment. 6) The Applicant includes spot grades along the center line of the proposed road on Sheet 3. The spot elevations do not align with the proposed contour lines. Response: The plans have been revised to address this inconsistency. 7) The Applicant should note the width of the"Reinforced Turf Fire Lane." The fire lane should be coordinated with the Fire Department to be sure it meets requirements for access. Response: The width of the lane has been added to the revised plans. We are ill the process of responding to Fire Department comments in a separate correspondence that will be shared with the Planning Board and TCC, 8) The Applicant provides information inconsistent on Sheets 6 and 7.The inconsistences include: (A)The dimensions of the parking area drive aisle (B)ADA parking space size (C)ADA parking signs (D)The size of the overflow parking area (E)The locations of the proposed trees (F)The detail reference labels (G)Contour lines/elevations (H)Parking wheel stops (1) The level of detail on the existing conditions X-ref (J) Level of detail for the Rain Garden Response: The plans have been revised to address these inconsistencies. S) Additional detail should be added or clarified on the site plans to include: Snow storage areas: Response: The plans have been revised to show the location of snow storage area(s). Trash removal/dumpster locations: Response: All trash from Visitor Center and Farmhouse will be brought by site staff to The Stevens-Coolidge Place Operations Center at 113 Andover Street,where trash will be picked tip. Existing trees to be removed: Response: Due to the abundance of trees on the property,prior to construction, the trees to be removed will be flagged.There are approximately (10) trees at the entrance which will need to be removed.The drip line and the limit of work erosion control line will serve to protect the trees to be saved. 185 Centre Street I Danvers, MA 01923 1 V. 978-777-3050 F: 978.774-7816 1 HancockAssociates.com 1 HANCOCK ASSOCIATES Surveyors E nginevrs I Scientists 22587 Existing trees to remain: Response: Due to the abundance of trees on the property, prior to construction, the trees to be removed will be flagged. There are approximately ten (10) trees at the entrance which will need to be removed.The drip litre and the limit of work erosion control line will serve to protect the trees to be saved. Parking lot lighting: Response: The plans have been revised to detail the parking lot lighting, 10)The scales on Sheet 8 "Site Details"do not correspond with all the dimensions shown, Response: This sheet has been revised. 11)The"Section of Zoning Bylaw that Special Permit is Being Requested: Section 8,3.2a,iii"is not a section within the Zoning Bylaws. Response: The reference has been corrected and the revised application is attached. 12)The Application includes that Proposed Lot Building Height is 16' +/-,however the existing building to remain on site is 23' +l Response: The height of the existing building to remain is 23' +/- . The barn which will be removed and re-purposed is 16' +/- today and proposed as 16' +/- ill height. If you have any questions or concerns, please feel free to call Deb Colbert, P.E. at Hancock Associates, 978-777-3050 x410. Sincerely, Deborah L. Colbert, P.E. Senior Project Manager Hancock Associates '185 Centre Street Danvers, MA 01923 V, 978-777-3050 F: 978-774-7816 HancockAssociates.com ,'i I i 'I ',. TOWN OY-NORTH I11DDV ;R, MASS. 3 Voted that the' sum of* -fouz 'hundred thirty-five dollars and ninety-seven cents now held, Vy the Treasurer, be applied, and ,that the sum of one hundred dollars and seventy-nine cents be 'raised and appropriated for this article, Article 19. To see if the town will rote to raise by taxation, or by'bond issue or iiot:es, or in part by one and in Part by another method, the sum of fifteen thousand dollars ($15,p00), and to appropriate so much of the same as may be required to meet the obligations of the town incurred and anticipated by vote of the ;special meeting held July 31, 1930, by which the town assumed land damages, iiot in ex- cess of said amount, arising out'of the laying out and con- struction of the proposed State Highway from the junction of Andover and Peters. Street northerly 'to Osgood Street near its junction with Sutton Street, ?. Voted that the sum of three thousand dollars be raised and appropriated and that the sum - of twelve thousand dollars be raised either by note or bond zssue. Voted: that for the purpose of meeting obligations ins curred and to be incurred under previous action by the town, whereby it authorized the selectmen to indemnify the j State against land damages arising out of the 'laying out and construction of a proposed State Highway from the Junction of A.ndover'and Peters Streets northerly to Osgood Street near its junction with Sutton Street, in an amount not exceeding fifteen thousand dollars, there be raised by taxation in the, current year the sum of three thousand dollars ($3000.00), and that the Treasurer with the approval. of the Selectmen be, and hereby is a,uthorWd to borrow, the additional sum of twelve thousand dollars ($12-000,00,), and to issue bonds or notes of the town therefor in accord ante with section nineteen of chapter forty-four of the Gen- eral Laws, so that the whole loan ,shall be payable, in accordance with said section,. not more than four years after the date of issue of the first bond or note; and that the proceeds of said tax and of -said loan be appropriated, and it is hereby appropriated, to meet said obligations on account of land damages. The vote waa carried by more than two-thirds, the vote being unanimous in the afl' ma- tive and so declared. i Article 20. To see if the town will vote to discontinue as a town way (if it is a town way), the unused portion of Wood Lane from Andover Street, to a point to th'e north.' I 18 ANNUAL REPOK along the Lane beyond the place where the new State High- way will cross it, as recommended by the Mate 11oara ox Public Works. Petition of Committee on Roads. i. Voted as called for in the.article. Article 21. To see if the town will vote to instruct the selectmen, in conjunction. with the Committee on Roads, to petition the Cpujity Commissioners, under Chanter 289 of the Acts of 1924, for relief from the obligation of keeping Middleton Street in repair. Petition. of Committee on Roads. . Voted to petition the County Commis- sioners, under Chapter 299, of the Acts of 1924, for relief from the obligation of keeping Middleton Street in repair. Article. 22. - To see if the town will accept the laying out of Pilgrim Street, Buckingham Road, Cabot Road and- Norman Road, or any of said ways, as town ways, upon re- port of the Selectmen to be bled with the meeting. . 'The Selectmen reported through its Mod- orator that they had laid out Pilgrim Street, Bu elungham Road, Cabot Road and Norman Road , as town ways, in accordance with plans approved by the Board of Survey and on •file at the' Town Office, said ways being degeribed by metes and bounds, and decreed as town ways in conformity with law; and therefore it was voted: that the report of the Selectmen laying out Pilgrim Street as a town way be accepted, and the street established as a town way. Article- 23. To see if the town will vote to accept the report of the Selectmen, laying out Cabot Road as a, town way, in accordance with the provisiono of Chapter 82 of the General Laves. -Petition of Raymond H. Twombly and others. Voted: that the report of the Selectmen laying out Cabot Road as a town way be•accepted, and the road esta7alishod as'a town way. Article 24. .To see if the town ;will vote to accept the rej3ort of the Selectmen, laying out Norman Road as a town way, in accordance with the provisions of Chapter $Z of the General Laws, Petition of Eugene Boeglin and others. Voted: that the report ,of the Selectmen laying out Norman Road as a town way -be accepted, axed the road established as a town way. e .•V4ii" y� i PLANNING DEPARTMENT Cominunl &Eoonomlo Develo mart Division special Permft— Site Plan Review- Instructions Procedure and Requirements for Filing an Application for Site Plan Review; The following information must be submitted thirty(30)days prior to the tirsl pubilc heating, Failure to submit tho reguired Information within the time perlods prescribed may result In a dlsmissal by Etre Planning Board of on application as Inoomplets, The Infomtatlon herein Is an abstract of more speclhc requirements listed In the Zoning Bylaw and Is not meant to supersede them. Step 1; Pick up appiloation package; The petitioner picks up complete application package > Stop 2: Special permit Application Form-, Pellllonor completes three(3)copies of the application form,All Information as requlred ehail ba completed, ➢ Step 3; Plan Preparation. Pelfter submits All of the required plan Information as tiled In seollons 83 and 10.31 In the Borth Andover Zoning Bylaw, I A Step 4;Submit Appiloation; On or before noon on the application deadline date the poll tionor goes to the Town clerk to obtain a time stamp on three(3) applications, leave one applioafion with the Town Clerk and bring two(2)time slam pod applications to the Planning Department. Petitioner submits to the Planning Department two(2)fiats of full size plans i"n 40'no larger than 241106" prepared by a Registered Professional Bnglnear or Land Surveyor. Petitioner submits an additional three(3)sots of plans no larger than 14"xt7", Pellfloner musl submit an electronic PDF version of all submission material, Application must Include submittal of outside consultant revlew oficroW form, ➢ Step 6: Submit Filing Fees; The petitioner submits two separate chocks for filing fees and outside consultant fees, SEE;FEE SCHEDULE ; ➢ Step 8- Mail Application to Outside Consultant-, The petitioner malls a copy of the plan and application to the outside consultant for revlaw.Please con%ot the Planning Department for Mora Information, Y Stop 7;Notification of Parties to Interest: Petitioner plOs up an updated eordtted shutters list from the Assessor's office(located at 120 Main St.) It Is to be submitted as part of the application submittal, D Stop 8;Legal Notice; The petitioner is responsible for delivering the legal notice to the newspaper to be published and Is responsible for costs for same, the petltionatIs responsible for the costs for certified malting of the legal notice to each abutter. See specific updated instructions for certified mailing of legal notlees on the Planning Departmentwobsite. A Stop 0.,Public Hearing before the Planning Board- The petitioner should appear In hlslher behalf,or be represented by an agent or attomsy. In the absence of any appearance Without duo cause on behalf of the petitioner,the Planning Board shall decide on the matter by using the Informeton 4 has otherwise been provided, Page i of 4 120 Main Sireet,Planning Dept,forth Andover,M#assoohusetts f11846 Phone 978.688,9536 Fax 978.688.9642 Web MM.northandovarrria,goy Y Step 10,Decision, Decision is sent to the pehponer, Any appeal of the Planning Board's dadslon may be made pursuant to Massachusetts Ganeral Laws o.ABA see,17 within 20 days after the decision Is tiled with the Town Clerk, D Step 11;Recording CoAfficate of Decision Plans,. The potitioner is responsible for recording certification of Iho dealslon and any accompanying plans at the Essex North Registry of Deeds,Lawregco Massachusetts, petitioner should bring in one recorded copy of the decision and three paper copies of the recorded plan or land along with the proof of recording cash register slip to the Planning Department GENERAL MtflREMENT$TO BE MET FOR OBTAINING A SITE PLAN RRMI W$Pl CIAL PERMIT Written Documentation Applications for a special permit must be supported by a legibly written or typed memorandum setting forth In dotall all facts relied upon.Addressing each of the below points individually is required with ibis application, D Encouraging the most appropriate use of land; D Preventing overcrowding of land; > Conserving the value of land and bulldings; D Lessening oongestion of traffic; A Preventing undue concentration or population; D Providing adequate light and air; > Reducing the hazards from fire and other danger; Assisting In the eoonomleal provision of transportation,water,sewerage,schools,parks,and other publio facllitles; D Controlling the use of bodies of water,Including wateroourses; ➢ Reducing the probablilly of losses resulting from floods;and ➢ Reserving and Increasing the amenities of the Town;AND ZONING BYLAW SECTION 10.31 The Special Permit Granting Authority must have all the fallowing cond Mons met; D The specific.site Is an appropriate location for such a use,structure or condition; D The use as developed will not adversely affect the neighborhood; A There will be no nuisance or serious hazard fovahides or pedestrians; ➢ Adequate and appropriate foollifles will be provided for the proper operation of the proposed use; D The Speclal Permit Granting Authority shall not grant any Special Permit unless they make a speolflc finding that the use is in harmony with the general purpose and Intent of this Bylaw, SPECIFIC REQUIREMENTS TO BE MET FOR OBTAINING A SITE PLAN REVIEW SPECIAL.PERMIT Written Documentation Applications for a special permit us be supported by$legibly written or typed memorandum setting forth In detail all facts relied upon, See Bylaw Seotlon 8.3 Site Plan Review, NOTE,,A Special Permlt onco granted by the Planning Board will lapse in two(2)years If not exercised unless the(Tanning Board grants an extenslom Page 2 of 4 120 Blain Street,Planning Dept.,North Andover,Massachusetts 01845 Phone 97&688,9535 Fax 978.688,9542 Web M,noiEhandoyerma aay 1 a PLANNING DEPARTMENT Commonl &8conomio Development Nvislon Special Permit-- Site Plan Review Application Please type or print clearly, 1.Petitioner; Deborali L,Colbert,P,E. Hancock Associates Petitioner's Addross: 185 Centre Street Danvers,MA Telephone number: �978-777-3050 2.Owners of the land, 7'he trustees of Reservations Addross: 2oo High Street Boston,MA 02110 _ Humber of years of ownership:_57 pears(bequeathed in 1962) 3,Year lot was created: Unknown 4,Desorlptlon of Proposed Project: The Trustees is ng a new visitor access roatE aloe Chickerin&Road including a curb cut,entry drive, lightingassociated car gravel parking lot.The proposal also includes the repurposing of an existing 24x6o'shedto become a Visitor Center to orient visitors and urovide space for-public workshops,New trees, I)Ianting hgds,and ADA Accessible visitor circulation nnd fire yehicle acres.,;have been identlaed. I i 6.beserlptien or premises: Land conservation parcels currently malntained as hayed meadows, 6.Address of Prop orty Being Affected: 0 Chickering Road,137 Andover Street Zoning District: Residence 3 District Assessors leap: 46,46,46.&59 Lot#: 7,0,17,&17 Registry of Deeds.,Book#: Not Available Pago#: Not Available 7,Existing LvE: Lot Area(Sq,Ff): 21 +f-Acres building Haight: 23'+/- Street Frontage: 1300'+/- Side Setbacks: 30' +1- Front Setback: 620'+/- Rear Selbaok: 90' +t- Floor Area Ratio:NIA Lot Coverage; NtA 8,Proposed Lot;if applicable): Lot Area(Sit.Ft): 21+/-Acres Building Height: le+/- Street Frontage: 1300'+1, Slde Setbacks: 88'+/- Front Setback: >500' Rear Setback: 148'+/- FloorArea Ratio: WA ,^ Lot Coverage: NIA Page 3 of 4 120 Main Street,Planning Dept,,Nord':Andover,Massachusetts 01846 Ph%a 078,688.9635 Fax 978.688.9542 Web www,northandoverma,aov 1 9,Required Lot(as required by zoning Bylaw): Lot Area(Sq.FQ:_2r ono _ _ Building Height,, 35' Street Frontage,. j261 Side Setbacks: 20' Front Setback: so' Roar Setback,, ao, Floor Area Ratio: tv1A Lot Coverago: N/A 10.Eadsting Building(If applicable): One existing bullding @ 5 Wood Lane w10 remain,One shed to be removed,One shed to be re-purposed, Ground floor(Sq,Ft,): 792+h #of Floors: 2 Total Sq,Ft,:. 1584+I- Height: 23'+(- gp; Currently a single Cannily hams Typo of Construction: wood Lease to end to September 2019, 11,Proposed Building: Ground Floor(Sq.Pt,): 1410_�._ #of Floors: one Total Sq,Ft, 1410 Height: �4'*�- Uso; Visitor Gtr,A classroom space Type of Construction: Wood 12,Has there been a previous application for a Spacial Perm t from the Planning Board on these promises? no If son when and for what type of constructlon7 13,Section of Zoning Bylaw that Special Permit Is Being Requested &ction 195.8-1143) 14,Petitioner and Landowner stgnaturo(s): Every applicatlon for a Spacial Perrhlt shall be made on this form,which Is(lie official form of the Planning Board.Every application shall be filed with the Town Clerk's office,It shall be the responslbl6lty of the petitioner to fumish all supporting documentation with this application,The dated copy of this application received by the Town Clerk or Planning Offlce does not absolve the applicant from this responsibility,The petillonor shall ba responsible for all expenses for filing and legal notMoatlon, Failure to comply with application requirements, as cited herein and In the Planning Board Rules and Regulations may result In a dismissal by the Planning Board of this application as Incomplete, pelttioner's Signature: "Ail.,eAx RE, Print or type name here:, Qghaarh L.Colbert,P,T3_ Hancock Associates f Owner's Signature: Print or type name here; Elizabeth Kemy Soule,The Trustees of Reservatlons 15,Please list tiNe 4f plans and documents you will be attaching to this application. site Plan Sel Traffic Study Page 4 of 4 120 Main Street,Planning Dept„North Andover,Massachusetts 01845 Phone 978.686.0535 Fax 976.688.9642 Web M.northandoverma,cau ~S; PLANNING DEPARTMENT Bullding Conservailon Healih Plsnning Stevens Wate zoning Cerfificatlon of Payment of Municipal Taxes, Fees, Assessments, 13etterments and Other Municipal Charges The Town of North Andover General Bylaw Chapter 120-1, provides that any application for a permit or license may be denied,suspended or revoked If the holder thereof has failed or refused to pay any taxes,fees, assessments,betterments or other municipal charges, By signing this application,the appilcant represents that he or she has paid all such taxes and fees, I Elizabeth Kea rySoule , certify under the penalties of perjury that to the best of my knowledge and belief, I have not neglected or refused to pay any municipal taxes, fees, assessments,betterments or any other municipal charge Including amounts assessed under the provisions of section twenty-ono D, or am not applying for a license or permit with respect to any activity,event or other matter which is the subject of such license or permit and which activity, event or matter Is carried out or exercised or Is to be carried out or exercised on or about real estate whose owner has neglected or refused to pay any local taxes, fees, assessments,betterments or any other municipal charge, signed under oath, %� Ekaboth Keefy Soule Nan 200 High Street Boston,MA 02100 Address Does the property Owner own any additional property in North Andover(Yes or No)? Y If yes, please list the property address of any additional property, Property Address, weir Hill,Stevens Street Ward Reservation,Prospect Road Narlh Andover Tax Collector Signature Name Date A COC ASSOCIATES Sl rvevors I Lllgllleers ! :16t!11listti 22557 October 29, 2019 Ms. Monica Gregoire, Staff Plariner Planlling Department Town of North Andover 120 Main Street North Andover, Massachusetts 01845 Subject: Trustees of Reservations The Stevens-Coolidge Place Chickering Road Noilli Andover, MA 01845 Dear Ms. Gregoire and Board Members: Hancock Associates acting oil behalf of The Trustees of Reservations, is pleased to offer the following responses to review comments blade by Fire Chief I t. Michael Beirne dated September 18, 2019. We have included his comments with our responses in bold following for ease of review. 1. I see the note about tile 'Minimum Turning Radius for Fire Truck Pumper' however I can't ascertain from the plan whether or not the template I attached to illy earlier email was employed. One reason for nee questioning is that the drawing shows a section of the fire access road as being '38' MIN (length of one fire truck)'. We use our Ladder truck for the template as it is our largest piece of apparatus and is 40'2.25" long, so the distance stated doesn't accurately reflect our largest vehicle. Can you confirm that our template was run on the paved section of the plan? Response: The SWEPT path analysis has been added to the plans.Tile access road width has been widened to 20', The length of the access road is less than 1501. 2. Will the surface be capable of supporting an imposed load from fire apparatus of up to 75,000 lbs.? Response: The average strength of reinforced grass Is 150-350 tons/m 2 (28,000-65,000 lbs./ft2). Assuming that 75,000 lbs. is the overall weight of the fire apparahs, which will be distributed into all wheels, then tlle proposed surface is permissible. A standard fire lane is one of the primary recommended applications of the product. Please review the attached Specification for Grasspave2 by Invisible Structures. 3. Could you advise as to the dimensions of the proposed reinforced turf lane, in terms of length, width, and overall square footage? Response: The plans have been revised to address these concerns. 4. Will you provide us with stamped drawings and documentation of the surface design by a registered design professional? 185 Centre Street Danvers, MA 01923 f U: 978-777-3050 V 978-7/4-7816 HancockAssoc;iates,con) !. .: '•t'..`f1 ;tit(r `I its:i, f'I`ff'J� .I. I( tfl, htl�'. � ,!_I furl, fell I HA !rlrCOC K n I' Ssoci LS SurvC)ION E-11gilleers I SCielltiSIS 22587 Response: Stamped drawings will be provided as part of our site review permitting application. 5. How will the fire lane be marked so it is evident to our members where apparatus can and cannot travel? Signage indicating where the fire access road begins would be required but I'd also like to see the lane defined for its entire length/width etc. so it is obvious to our personnel where our apparatus can safely go. Bearing in mind the intended use of the location, I'd be open to considering some type of natural indicator, say planters or shrubs etc, that when maintained properly will define the lane and be visible to us while keeping it functional and accessible. Additionally, how will the road be maintained during the winter months, in particular after snow7 Will plowing it damage the surface and eliminate it rating? Response: The revised plans include a"fire lane" sign at the entry, Note that the drawing of the fire lane has been revised to include a flush curb running the length of the lane in order to provide visual delineation.The lane will be plowed in the winter. Plowing will take into account the fire lane surface so as not to damage the surface. 6. If approved, the surface will need to be maintained in proper working order while used as a required fire lane. Response: Comment acknowledged. If you have any questions or concerns,please feel free to call Deb Colbert, P.E. at Hancock Associates, 978-777-3050 x410. Sincerely, Deborah L. Colbert, P.E. Senior Project Manager Hancock Associates 185 Centre Street Danvers, MA 01923 V, 978-777-3050 F: 978-774-7816 HancockAssociates.corn t?hi`JVCW). Mf-1Wfi'( I A NCOCK Strl'1'evor;s 1!,17f,Meer' I Scientists 22587 October-29, 2019 Ms. Amy Maxner Conservation Agent Town of North Andover 120 Main Street N. Andover, MA 01845 Subject: Trustees of Reservations The Stevens-Coolidge Place Chickering Road North Andover, MA 01845 Dear Ms, Maxner: Hancock Associates acting on behalf of The Trustees of Reservations, is pleased to offer the following in response to your August 26,2019 email comments, We have included your comments with our responses in bold following for ease of review. 1) I understand that the Planning Board will be requiring a peer review on the civil and storrnwater aspects of the project and I anticipate comment and subsequent correspondence/responses will be forwarded to the Conservation Commission before any wetland permitting decisions are made. Response: This project has two (2) outside reviewers. Horsley Witten Group will be reviewing the storin water design.TEC Engineering will review the Civil Drawings. We will share their review comments with our responses. 2) Field Inspector Ben Curall and I walked the flagged wetland line and took a handful of soil samples along the way- reviewing WF#01-08 and WFBO1 - B28 (we did not walk the rest of the B series south of 1328). We found the delineation to be reasonable and did not request any flag relocations, Response: Comment aelmowledged. 3) As notation#15 states, the wetland to the north of WF901 has not yet been flagged. I will need to review in the field once they are installed, and said flags will need to be added to the plan. Response: The wetland to the north has been delineated by Ann McMenemy of Hancock and field located by Hancock. The plan has been revised to reflect the wetland and associated buffer. 4) The detention basin discharge point is within the 25'NDZ to the section of wetland not delineated, this will need to be relocated outside the 25' NDZ. Additionally, the NOl narrative notes that no work is within 25', but that grading and discharge pipe/flared end is in the 50' NBZ. However, NACC Regulations Section 3.4 and 5,2 require that a written alternatives analysis be submitted for locating said structures in the 50' NBZ. If these features are not relocated, please submit the analysis. '155 Centre Street: I Danvers, MA 01923 V: 978-777-3050 j F: 978.774-7816 ldancor-kgssociatesxom [;r r.t� ,3 ! � �I I# 1.1+l�'r! �)Ilf?, l�i�l,aEr E' , i;lr`,;�i i;� r,{�FIJ��# 3 Sli ;;�E�E�I"�? ��, � I'1;fi�l� :f rC?l•i, f��l%. ) ` ?�! i ,`.�, ir�: i ' HANCOCK ASSOCIATES Surveyors 1 Engincers I Scientists 22587 Response: The infiltration basin has been re-designed and all work has been removed from the 25' NDZ and all stormwater structures from the 50' NBZ, 5) A materials stockpile area needs to be identified on the plan - not within proposed stormwater areas and out of buffer zone to the greatest extent passible. Response. A stockpile area has been identified on the revised plan out of the buffer zones. G) Are there any large diameter trees coming;down within the limit of work and are there any at the edge of the limit of work which root systems would be impacted by the work? Response: At the proposed entrance there are approximately 10 trees which may be affected by this work.The intention is to limit the removal of any trees as part of the work. We welcome a condition of any approval which requires the limit of work to be staked and walked with the Conservation's agent prior to commencing earthwork. 7) The application packet did not include specifications or cross sections for the detention basin, grass swale or flared rip rap discharge point. Are these available for the Commission's review and file- I suspect they will be needed for peer review with Planning Board. Response: These details have been added to the revised plans. 8) No specifications or plan was provided for the paved apron at the entrance- only a notation refers to Vanesse& Assoc. plan, Response: The Vanesse & Associates plan is submitted with the Hancock revised plants herein, These plans are subject to Massachusetts Department of Transportation approval. 9) The number of plants should be specified in the plant list. Response: The Landscape Plan will be revised to include the number of plants or a separate plant list. 10)Area of planting;should be outlined on the plan. Response: The Landscape Plan has been revised to outline the limit of new planting within the 100' buffer zone. 11)Is there any test pit information at the detention basin location that can be forwarded? Response: Soil testing was performed by Hancock Associates and has been Included on these revised plans with locations shown on the plans. 12)The O&M plan should be more detailed as to actual maintenance activities required by each BMP. Response: The O& M has been revised and individual O & M logs added to the Stormwater Report outlining each BMP. 13)There are two light gray symbols(a circle and a square)on either side of the erosion control at the new entrance- can these be identified. f 185 Centre Street I Danvers, MA 01923 V: 978-777-3050 P: 978-774-781 b HancockAssociates.com i L-.� Y., i s ,{�l, t l If_I_(;'I',1 i_'I;'I_�, t>,1�`'i�ll l��',, i,�lr\3�,! I'C)I:�:>�,_1� �I f, i II-"oV1_,4Ji,'yl'€ ?i.�1 I'I;I`l� 1_I0 vI, MA `;AI FNI, iv;l f A COCK ASSOCIATES tkl'Yeyorti I Engineers I Scientists 22587 Response: These were brought in from an aerial survey and cannot be edited, The circle is a telephone pole and the square is a catelr basin. 14)There are asterisk-type symbols along the proposed gravel drive- are these proposed lighting? If so, dark sky specifications should be incorporated into the design, Response: The lighting has been labeled and details have been added to the details sheet. A Lighting Photometric Plan has been added to the plan set. The fixtures are"dark sky" compliant. If you have any questions or concerns, please feel free to call Deb Colbert, P.E. at Hancock Associates, 978-777-3050 x410. Sincerely, Deborah L. Colbert, P.E. Senior Project Manager Hancock Associates 185 Centre Street Danvers, MIA 01923 V; M-777-3050 F: 978-774-7816 i-1ancocl:Associates,corn ' W HV� '. , `tf,'I-�_ (_ •;�- �;_�4 !�f}; r, ',i�fC'(�'i SiE �'�'rEi\ ( � t)I`i, 11f1 i .r;�,�.i.�`,'� f��i � HANGOC K ASSOCIATES TES Surveyors � Engineers Scientists #22587 Ms. Amy Maxner October 29, 2019 Conservation Agent Town of North Andover 120 Main Street N, Andover, MA 01845 Subject. DEP bile No. 242-1764 Trustees of Reservations Stevens-Coolidge Place 137 Andover Street & 0 Chickering Road North Andover, MA 01845 Dear Ms. Maxner: Hancock Associates, acting on behalf of The Trustees of Reservations, is pleased to offer the following in response to the Mass DEP-NERD comments posted on-line by Mr. Gary Bogie on September 26, 2019. We have included their comments with our responses in bold for ease of review. l. Only pages 3 and 4 of plan submitted with NOI. Please send missing pages. Response: Please see attached revised full set of revised plans. 2. Infiltration basin requires pre-treatment and together only credited for 80% TSS removal. If grass swale is pretreatment for the infiltration basin, then the system only gets 80%TSS removal credited. Response: Please see attached revised Stormwater Report.The grass swale will pretreat and be credited with 50% TSS removal and the infiltration basin will be credited for 80% removal for a total removal credit of 90%. 3, infiltration basin requires emergency overflow channel. Response: Please see attached revised plans and Stornawater Report. The basin has an emergency overflow. 4. Were soil test pits made at infiltration site and ESHGW identified to ensure that there is the required 2 f.t of separation btw bottom of system and the ESHGW? Response: Soil testing was conducted and results have been added to the revised plans and Stormwater Report. The required two (2) feet separation from Estimated Seasonal High Groundwater has been met. If you have any questions or concerns, please feel free to call Deb Colbert, P.E. at Hancock Associates, 978- 777-3050 x410. Sincerely, LIULA_ Deborah L. Colbert, P,E. Senior Project Manager '185 Centre Street ( Danvers, MA 01923 j V.' 978-777-3050 F: 978-774-7816 ( fdancockAssociates.corn l-3C �.l i �i.f f:".! I! L ;i',J 11,:1 # ;tr# y J•„%, ;'{.S < k : iE.c li. ! lFt:'� i'i ;, 1'� Wi I PLANNING DEPARTMENT Comm unity&Economic wln msnt Divlslon Special Permit—Site Plan Review-- instructions Procedure and Requirements for Filing an Application for$Ito Plan Review; The following Information must be submitted fhlrty(30)days prior to the first pubilc heating. Failure to submit the required Information wllhin the time periods prescribed may result In a dlsrrtissal by the Planning FWrd of en appiioation as Incornplote, The Information herein Is an abstract of more speoffio requirements listed In the zoning Bylaw and Is not meant to supersede Ihem. ➢ Stop 1: Pick up oppllcallon package: The petitioner picks up complete applicallon package Stop 2: Special permit Application Form: Petitioner completes Woo(3)colas of the appllcatlon form,All Information as required shall be completed, ➢ Stop 3: Plan Preparation: Pelilioner submits all of the required plan Information as tiled In sectlons 83 and 10.31 In the North Andover Zoning Bylaw, . i D Step 4:Submit Application: On or before noon on the application deadline date the petitioner goes to the Town Clerk to obtain a time stamp on three(3) applications. Leave one dpplicailon with the Town Clerk and bring two(2)time stamped applications to the Planning Department. Petitioner submits to the Planning Department two(2)sets of full size plans 1"a 40'no larger than 241146" prepared by a Registered Professional Fnglneer or Land Surveyor, Petitioner submits an additional three(3)sets of plans no larger than 11"x17". Petitioner must submit an slectronlo PU version of all submission material, Application inusl include submittal of outside consultant review osorow form, ➢ Step 6: Submit Filing Fees: The petitioner submits two separate chocks for filing fees and outside consultant fees, SEE FEE SCHEDULE ➢ Stop 6: Mail Application to Outside Consultant: Tire petitioner mails a copy of the plan end application to the outside consultant for rovlsw,Please contact the Planning Department for more Infomrailon. ➢ Stop 7:Notification of Parties In interest: Pettioner picks up an updated certified abutters list from the Assossoes office(located M 120 Main$t,) it Is to be submitted as part of the applicatlon submittal, ➢ Step 8:Legal Notice: The petlfloner Is responsible for delivering the legal notice to the newspaper to be published and Is responsible for costs for same, The pettloner is responsible for the costs for cortified malting of the legal notice to each abutter. See speoiflo updated instruollans for certified malling of logo)notices on the Planning Department wobslts, ➢ Step 9:Public Hearing before the Planning Board: The petitioner should appear In hislher behalf,or be represented by an agent or attorney, In the absence of any appearance w#ltro:rt due cause on behalf or the petifloner,the Planning Board shall decide on the matter by using the Information It has otherwise been provided. Page 1 of 4 120 Main Street,Planning NO,,North Andover,Massachosefts 01845 Phone 978,688.9535 Fax 976t88,9542 Web M,noMancloyaTmajoy i I I Step 10,Deolsiort; Decision Is sent to the pot6flor. Any appeal of the Planning Hoard`s dedslon may be made pursuant to Massachusetts Genorai laws c,40A seo,11 within 20 days after Ilia decision is filed with the Town Clerk. p Step 11:Recording Certificate of Decision Plans; The potitioner Is responsible for recording certification of the decision and any accompanying plans at the Essex North Registry of Deeds,Lawrence Massachusetts, potlllonor should bring in one recorded copy of the decision and three paper copies of the recorded plan of land along with the proof of recording cash register slip to the Planning Department GENERAL RCQUIRI iMENTS TO BE MET FOR OBTAINING A SITE PLAN REVIEW SPECIAL PERMIT Written Documentation Applications for a special Permit Must be supported by a legibly written or typed memorandum setting forth In detail all facts relied upon,Addressing each of the below points Individually is required with this application, ➢ Encouraging the most appropriate use of land; D Preventing overcrowding of land; ➢ Conserving fhe value of land and buildings; A lessening congestion of traffic; Preventing undue c oncentmIllon of population; A Providing adequate light and air; > Reducing the hazards from fire and other danger; Asslsting In the economical provision of transportation,water,sewerage,schools,parks,and other public fackitles; A Contralling tha use of bodies of water,Induding watercourses; A Reducing the probablilly of losses resulting from floods;and Reserving and Incroasing the amenlfles of the Town,AND ZONING BYLAW SECTION 10,31 The$pedal Permit Granting Authority must have all the following conditions met; The spectllc site Is an appropriate location for such a use,structure or condition; The use as developed will not adversely affect the neighborhood; ➢ There will be no nuisance or serious hazard to vehicles or podesidans; Y Adequate and appropriate faalidos will be provided for the proper operation of the proposed use; Y The Speclal Permit Granting Authority shall not grant any Special Permit unless they make a specific finding that the use Is In harmony with the general purpose and Intent of this Bylaw, SPECIFIC REQUIREMENTS TO BE MET FOR OBTAINING A SITE PLAN REVIEW SPECiAL PERMIT Written Documentation Applications for a special permit MUs be supported by a legibly written or typed memorandum setting forth In detail all facts rolled upon. i See Bylaw Section 83 Site Plan Review. NOTE:A Special Permit once granted by the Planning Board will lapse in two(2)years If not exercised unless the Planning Board grants an extension. Page 2 of 4 120 Main Stroet,Planning Dept„North Andover,Massachusetts 01845 Phone 978,688.9536 Fax 978.688,9542 Web www.noMiDdoverma.crov PLANNING DEPARTMENT Comm*&Emomlc devolo meat DIVlslon Special Permit Site Plan Review App,lication Please type or print clearly. 1.Patitloner: Deborah L.Colbert,Pz Hancock Associates Petitloner's Address: Telephone number: 978.777-3050 2.Owners of the Lend; `t'he'rrustees of Reservations Address:.200 High Street Boston,W 02110 Number of years of ownership, 57 years bequeathed in 1962) 3.Year tot was created: Unknown 4, Descrlption of Proposed Project; The Trustees is proposing a new visitor access route along Chickering Road including a curb cut,entry drive, associated fiyjtfing and 60 car gravel parking lot,The Proposal also includes the repurposing of an existing Ux60'shed to become a Visitor Center to orient visitors and i rovide space for public worksho s,New trees plAnting beds.and ADA accessible mis[tor circulation and fire vehiCir.Access hAw hCPn identified' 8.Description of Premises: Land conservation parcels currently niaintained as hayed meadows, 6.Address of Property Be}ng Affected: 0 Chic kering Road, 137 Andover Street Zoning District; Residence 3 District Assessors Map: 46,46,,46,&59 Lot#; 7,a, 17.&17 Registry of Deeds;Book#: Not Available page#; Not Available 7.Existing Lot; Lot Aram(Sq,Ft); 211_+_/_-Acres _. Building Height; 23'+/- StreetFrontage; 1300'+I- Side Setbacks: 30' +1- Front Setback, 620'+h Rear Setback; so' Floor Area Ratio:—N/A , Lot Coverage; NIA 0.Proposed Lot(if applicable): Lot Area(Sq.Ft): 24 +/-Acres Building Holght: 1&'+1- Street Frontage, i3oo'+/- Side Setbacks: 68,+/- Pront Setback; >600, Rear Setback: 148'+/- FloorArea Ratio;, A�� _ Lot Coverage; NIA Page 3 of 4 120 Maln Street,Planning Dept„North Andover,Msssachuseb 01846 Phone 978,688,9535 Fax 978,688,9542 Web www.northandoyerma,gov 9,Required Lot(as required by Zoning Bylaw); Lot Area(Sq,Ft): 26,000 Building Height: 36' Street Frontage; ,2s, $Ida Setbacks; 20` Front Setback; 30' Rear Setback; 30` Floor Area Ratio: NIA Lot Coverage: NIA 10.Existing Building(If applicable): One existing building @ 5 Wood lane will remain,One shed to be removed.One shed to bo re-purposed, Ground Floor(Sq.Ft,):_ �s2+1- - - #of Floors:, 2 Total Sq,Ft.: 1884+I- Height; 23'±L- age, Currently a single family home Type of Construction: wood Lease to end In September 2019. 11,Proposed Building: Ground Floor(Sq,FQ:.1410 #of Floors; one Total Sq. Ft, 1410 Height: 16'+I- Use; visitor Ctr,&classroom space Type of Construction; Wood 12.Has there been a previous application for a Special Permit from the Planning Board on these premises? no I If so,when and for what type of construction? 12,Section of Zoning Bylaw that Special Permit Is Being Requested^ Section 195.8-1 t.A(3) - -- — 14,Petitioner and Landowner signature(s)t Every application for a Sp"lal Permit shall be made on this farm,which Is the official form of the Planning Board, livery application shelf be tiled with the Town Cleric's ofiice,11 shall be the responsibility of the pelltioner to furnish all supporting documenta8on with this appl€cation.The dated copy of Ihls application recelved by the Town Clork or Planning Office does not absolve the applicant from this responsibility.The petliloner shall be responslblo for all expenses for liking and legal notifleatlon, Failure to comply wlih application requirements, as cited herein and in the Planning Board Rules and Regulations may result In a dismissal by the Planning Board of this application as Incomplete, Patftionor's Signature. A&ti4 611.r pf Print or type nave here; D nary L. o grl.P.P- Hancock Assoclaks Ones Signature; Print or type name here: thCbeth Keary Soule,The Trustees of Reservations 16,Please list title of plans and documents you will be attaching to this application—Slie plan set Traffic Study i Page 4 of 4 120 Main street,Planning Dept,,North Andover,Massachusetts 01845 Phone 978,599.9635 Fax 978,688. W Web yryffi.n©0andoverma,g`ov 1 PLANNING DEPARTMENT Buliding Consarvallon Health Planning Stevens hstate :Zoning Certification of Payment of Municipal Taxes, Pees, Assessments, Betterments and Other Municipal Charges The Town of North Andover General Bylaw Chapter 129-1, provides that any appllcatlon for a permit or license may be denied, suspended or revoked If the holder thereof has felled or refused to pay any taxes,fees, assessments, betterments or other municipal charges, By signing this application, the applicant represents that he or she has paid all such taxes and fees, Elizabeth xear}'Soule ,certify Under the penalties of penury that to the best of my knowledge and belief, I have not neglected or refused to pay any municipal taxes, fees, assessments, betterments or any other municipal charge Including amounts assessed under the provisions of section twenty-one D,or am not applying for a license or permit with respect to any activity, event or other matter which is the subject of such license or permit and which activity, event or matter is carried out or exercised or Is to be carried out or exercised on or about real estate whose owner has neglected or refused to pay any local taxes, fees, assessments, betterments or any other municipal charge, .3 Signed under oath; _c' Elizabeth Keary Soule Nan 200 High Street Boston,MA 02100 Address Does the Property Owner own any additional property In North Andover(Yes or hie)? Y (YIN), If yes, please list the property address of any additional property, Property Address; Weir Hill,Stevens Street Ward Reservatlon,Prospect Road North Andover Tax Collector Signature Name Date i