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HomeMy WebLinkAbout1999-02-17 Response to Engineer Comments SPR Appledore 600 Slate Street,Suite D Portsmouth,NH 03801 Engineering inc® tel 603.433.8818 fax 603.433.8988 MEMORANDUM aeiQnh.ultranet.eom Date: January 19, 1999 To: Kathleen Colwell, Planning Board Mike Howard, Conservation Commission John Chessia, Coler & Colantonio Copies To: Brian Gagne Rick Hanson From: Bradlee Mezquita, P.E. Appledore Engineering, Inc. Re: North Andover Commerce Center North Andover, Massachusetts AE1/1275 In response to Coler and Colantonio's January 14, 1999 review letter, we offer the following responses. We have attached a copy of the review letter and assigned a letter to each issue. A. Water Protection District: The reviewer is correct. Only a small portion of the site falls within the Watershed Protection District. As discussed with Kathleen, all of the stormwater from the proposed site will flow to the Merrimack River. Stormwater will not flow to Lake Cochichewick. B. Landscaping: The proposed parking area is located adjacent to the existing road right-of-way. We have assumed that based on the TRC meeting on December 28'", the Planning Board meeting on January 5", and the January 16' site walk that this is not an issue. C. Loading Areas: The proposed loading areas are shown graphically on the Site Plan. We have added a note stating the proposed number of loading areas to the plans. North Andover Commerce Center North Andover, Massachusetts AE 111275 Page - 2 D. Off-Site Contours: As shown on the pre- and post-development watershed plans included in the drainage study, we have calculated an area ranging from 00-100 feet wide that contributes drainage to this site. Based on field observations we feel this is a fair assumption. E. Impervious Screen: It is our interpretation of the ordinance that an impervious screen is meant to be used when the area abuts a residential district. The parcels to the south are in a General Business district. These parcels are separated by approximately thirty feet (30') of existing vegetation and a significant grade difference. An impervious screen in this area is not warranted. F. Green Space: The green space for the entire site (both parcels) has been shown on the Site Plan. The parcel on the west side of Clark Street is well within the maximum lot coverage of 35%. The maximum lot coverage percentage deals with primary and accessory buildings. G. Wetland Boundaries: The North Andover Conservation Commission approved a request for a Determination of Applicability on October 21, 1998. H. Flagging at "Annex" Building: We agree that this wetland line may be revised with additional flagging. Since we were not proposing any work in this area, additional flagging was not performed. I. Grading: Grading in this area has been revised to remove grading within the 25' no disturbance zone. Appledore mA Engineering Inc. North Andover Commerce Center North Andover, Massachusetts AE111275 Page - 3 J. Access Drive Construction: Portions of the access drive fall within the 50' no-build zone. It is our understanding that this is allowed. We reviewed the site plan with Mike Howard at our preliminary site walk on October 1, 1998. The access drive was acceptable as long as the 25' no disturbance zone was not disturbed. K. Stormwater Standards: • Standard 1 -- No comment • Standard 2 - We have revised the pre- and post-development drainage calculations to include the TR-55 time of concentration worksheets. We have also adjusted the conditions of woods from fair to good. We have modeled the one-year storm event. The stage storage curves have been revised in the post- development drainage calculations. An additional emergency spillway has been added to the constructed wetland. This spillway has been designed to pass the 100 year storm assuming the primary outlet structure is plugged. The test pits performed in the area of the constructed wetland were evaluated by Jaworski Geotechnical, Inc. (JGI). JGI is a geotechnical engineer licensed in the state of Massachusetts. Since these test pits were not being used for any Title V applications a soil evaluator was not contracted. • Standard 3 — Recharge has not been proposed due to the high groundwater levels. • Standard 4 — The site has been designed to meet the 80% TSS removal criteria set by the DEP. A constructed wetland is credited with an 80% TSS removal rate. Since we have met the 80% removal criteria, 4' sumps and hoods have not been proposed. • Standard 5 —The site will not have a high potential for pollutant loading due to the expected use of warehousing and light manufacturing. • Standard 6 — not applicable • Standard 7 — The project is a re-development project. MM Agpledore MA Engineering Inc. North Andover Commerce Center North Andover, Massachusetts AEI/1 275 Page - 4 • Standard 8 --The Grading, Drainage and Erosion Control plans indicate the location of all erosion control measures. • Standard 9 —An operation and maintenance plan has been submitted. Excavated materials from the constructed wetland will be used under the proposed building pad, if possible. It unsuitable material is excavated, the material will be legally disposed of off-site. L. Existing and Proposed 100-Year Flood Models: Ponds and wetlands will not be impacted by the proposed construction. Aas shown in the Drainage Study, the post-development peak rate of runoff from the site will be lower than what currently exists. M. Side Slopes: A 2:1 side slope in the constructed wetland was previously approved by Mike Howard with the condition that jute matting be used on the slopes. A note regarding the construction of bar racks has been added to the Grading, Drainage and Erosion Control Plan. N. Storage Capacity: Ample storage capacity will exist in the constructed wetland. The outlet structure has been set at elevation 107.0. This outlet structure will maintain a water elevation at 107.0 during normal conditions. The maximum flood elevation for the 100-year storm is approximately 110.0. The emergency spilling has been set at Elevation 116.0. O, See response to L. P. Existing Tree Line: The approximate treeline limit has been shown on the Existing Conditions Plan. Q. Demolition Items: Clarification to existing sewer pipes and manholes have been added to the demolition plan. A note regarding floor drains has been added to the utility plan. Appledore NO Enolneerino Inc. North Andover Commerce Center North Andover, Massachusetts AEI/1 275 Page - 5 R. No Build Limit: The 50' no-build line has been added to the Existing Conditions Plan. S. Drawing Scale: A waiver will be requested for the scale of the drawings. The plans were prepared at this scale to eliminate the need for "match lines". This item was previously discussed with Kathleen. T. Flows for Easterly Wetland: Since the easterly wetland and stream will not be affected by the development the peak flows have not been calculated, The peak flow and volume will remain unchanged due to this development. U. Clark Street: The portion of Clark Street where the flooding problem occurs is not affected by the proposed development. V. Environmental Reports: Environmental reports regarding the site have been submitted to the Conservation Commission. W. Clark Street R.O.W: Due to the existing right-of-way width and existing developments it does not appear reasonable to expand the width of the existing roadway since this portion of Clark Street is essentially a dead-end street. The need for a widened pavement section does not appear to exist, X. Drainage Connection: It is assumed that the DPW has reviewed the proposed drainage crossing as part of the TRC review. If you have any questions or require any additional information, please feel free to contact me. BMlvc (1275-023.doc) wo Appleore NO Eegineerinu Inc. Apply lore 600 State Street,Suite Q r Portsmouth,NH 03801 tel 603.433,8818 Engineering Inc. fax 603.433.8988 ae1@nh.u1tranet,com February 9, 1999 Mr. William J. Scott, Director of Community Development Town of North Andover 27 Charles Street North Andover, Massachusetts 01845 Re: North Andover Commerce Center North Andover, Massachusetts AEI/1 275 Dear Mr. Scott: In response to the review letter written by Jim Rand and the Site Plan Review-Special Permit Order of Conditions we offer the following responses. Both documents were given to Brad Mezquita of our office just prior to the February 9, 1999 Planning Board meeting. The below comments were compiled based on a project meeting held on the morning of February 10, 1999 with the Owner, Architect and Construction Manager. As you are well aware, the Owner would like to start construction as soon as Planning Board approval is obtained. The Owner would like to resolve all the open items over the next couple of days in order to receive final Planning Board approval, with a minimum of Special Conditions on February 16, 1999. Jim Rand February 8, 1999 Letter: 1. Sweeping of Clark Street: The Owner agrees to this condition with the clarification that weekly sweeping begins upon the commencement of earthwork activities and ends once the binder course of pavement is installed. The reason for the above clarification is that we believe it unnecessary to have weekly sweepings during the demolition of the building and during the time of tenant fit up when there will be no tracking of materials onto the roadways. 2. Width of Travel Way: Clark Street is currently 22 feet wide and has parking and utility poles located within the right of way. We are proposing to widen Clark Street from 22 feet to 24 feet and remove the parking and utility poles from the right of way, which we believe to be a significant improvement over the existing condition. 3. Roadway Cross Section: We are unclear as to how to respond to this issue. We are not proposing to rebuild Clark Street, therefore the existing cross section (and profile) will remain. 4. Coordinate Work with Town Water Main Installation: Agreed. We would like to see a schedule of the Towns' work and plans of the proposed work so we can North Andover Commerce Center North Andover, Massachusetts AEI/1275 Page - 2 properly coordinate the work. We also need to meet with the Town to discuss the existing and proposed domestic and fire services to this property. 5. DrainlWater Line Conflict: Please forward us a set of the Towns' water main construction plans so we coordinate the drainage crossing. 6. Low Point on Clark Street: We are not proposing to reconstruct Clark Street, the existing conditions will remain. 7. Water Services: At this time a 2" domestic and 6" fire service is required to service the building. The intent is to utilize the existing services until the town installs the new water main and taps to service this site. 8. Demolition of Existing Septic System: Agreed. 9. "RD" label: "RD" is for the roof drain. 10.Trees within Clark Street R.O.W.: Enclosed is a revised landscaping plan which adds "bump out" islands to provide adequate room to plant the trees outside the right of way. 11.Construction per Town of North Andover Specifications: Please provide us with a copy of the referenced specification for our review. We believe the plans do meet the town's requirements. Planning Board Site Plan,Review_-- Special Permit; 1. Special Conditions a. Detention basin outlet elevation: This appears to be a comment from another project as our elevations are significantly different from the 241.5 referenced. This should be removed as a Special Condition. b. Drainage Study approval: It is our understanding the drainage study has been approved by the Town's consultant. This should be removed as a Special Condition. c. Performance bond: The Owner will agree to this with the condition that further clarification is provided on the performance criteria for the as-built survey and the terms of the release of funds. Appledore NO Engineering Inc. North Andover Commerce Center North Andover, Massachusetts AE 111275 Page - 3 2. Prior to the Start of Construction a, Construction schedule: Agreed. The Town will be invited to the pre construction meeting with the site work contractor, A detailed project schedule has been developed. Work will start as soon as the Planning Board approval appeal period ends. b. Erosion Control: Agreed. c. Sound survey: We are unsure how to respond to this issue. Sources of sound will be from HVAC units or truck deliveries, The renovated facility will comply with all applicable sound requirements, Modern HVAC units will be quieter than the existing units and truck traffic will be significantly less than existed when the Borden facility was fully operational. The Owner is attempting to gather additional information from the Borden Plant engineer of previous sound studies that may have been completed. 3. Prior to Form U verification: a. Plans signed by Planning Board: Agreed, b. Submit certified copy of recorded decision: Agreed. 4. Prior to verification of the Certificate of Occupancy: a. Architect/Engineer certification: Agreed. b. Landscaping installed per approved plans: Agreed. c. Lighting approval: bighting will be Installed per the approved plans. Photometrics have been submitted to the town. We request this condition. be removed. d, Fire sprinklers per North Andover Fire Department: Agreed, Appledore NO engineering Inc. North Andover Commerce Center North Andover, Massachusetts AE111275 Page - 4 5. Prior to the final release of security: a. Landscape screen: We request that this Condition be removed. Landscaping will be installed per the approved plans. b. As-built: Agreed. See response to item 1 c. above. 6. Material stockpiles: Agreed. 7. Maintenance of equipment: Agreed. 8. Equipment exceeding noise levels: Agreed. 9. Site lighting: Lighting will be installed per the approved plans. Photometrics have been submitted to the town. We request this condition be removed. 10.Limiting truck deliveries and snow plowing hours: We request that this condition be removed as it is not appropriate for the uses allowed by zoning. 11.One year warranty on planting: Agreed. 12.Contact Dig Safe: Agreed, 13.Underground utilities: Telephone, cable and electric service will be above ground as currently exists. 14.No open burning: Agreed. 15.Underground fuel storage: Agreed 16.Binding provisions: Agreed. 17.Changes to approved plans: Agreed. mm appledore NO Englneering Inc. North Andover Commerce Center North Andover, Massachusetts AEI11275 Page - 5 18.Revisions: Agreed, 19.Special Permit expiration; Agreed. 20.Summary of Plans and Reports: We have made a number of revisions to the December 4, 1999 plans and study based on review comments form the Town's consultants, Conservation Commission and Planning Board. The plans have been revised through February 9, 1999. The Drainage Study has been revised through January 20, 1999. We look forward to meeting with you to discuss our responses to the above comments. Very truly yours, Greg . Mi olaities, P.E. Vice r sident GMMIvc (1275-026.doo) cc: Brian Gagne Rick Hanson Walter Gleason Carl Dubois Appledore MO Engineering Inc. mm Applet-,ire 600 State Street,Suite D Portsmouth, NH 03801 Engineering Inc. tel 603,433.8818 fax 603433,8988 aei@nh.uttranet.com 17719 HAY 27 Al 10, 77 MEMORANDUM RECEIVED Date: May 24, 1999 MAY 2 7 1999 To: William Scott, Director of Community Development NORTH ANDOVER Town of North Andover PLANNING DEPARTMENT Copies To: Rick Hanson, Ram Brian Gagne, Aries Properties From: Bradlee Mezquita, P.E� Appledore Engineering, lnc. Re: North Andover Commerce Center North Andover, Massachusetts AE111275 As you are aware the referenced project has started construction. Upon recent review of the Notice of Decision dated February 17, 1999, we noticed that one of the stipulations was that all utilities were to be underground. Based on our meeting at your office with Brian Gagne prior to our approval, we had discussed that this stipulation should be removed. Previous soil boring data indicates that the groundwater is very close to the surface and may prohibit the installation of underground utilities. Based on our discussion and your conceptual approval as well as the approved site plans we would request that the Notice of Decision be revised to allow all electrical lines to be overhead. If you have any questions or require any additional information, please feel free to contact me. BMlvc (1275-033.dac)