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Home My WebLink AboutCorrespondence - 350 HOLT ROAD 3/2/2007 NEw ENgLANDENGINEEMNG SERWES, INC. IkI600 Osgood Street Building Osgood Building 20 Suite 2-64 North Andover, MA 01845 Tel: (978) 686-1768 ® Fax: (978) 327-6138 Benjamin C. Osgood, Jr., P.E. President March 2, 2007 Lincoln Daley North Andover Planning Board 400 Osgood Street North Andover, MA 01845 Re: Crusader Paper 350 Holt Road,North Andover Dear Lincoln: Enclosed is an application for a site plan special permit for an addition to the existing building at 350 Holt Road,North Andover. The pin-pose of this addition is to give the company more space to store the raw materials used in its manufacturing operation. Crusader Paper processes raw paper in to smaller sizes and shapes as required by its customers. Attached to the standard application form is an appendix of additional information which addresses all of the requirements in the Site Plan Review section 8.3 of the Zoning Bylaw. If you have any questions regarding any of the information submitted here please do not hesitate to contact this office. Sincerely, 4n C., Os ;,�Jr. PE. President NEw ENGLANDENGnEmNG SERvims, hic. 1600 Osgood Street Building 20 Suite 2-64 North Andover, MA 01845 Tel: (978) 686-1768 • Fax: (978) 327-6138 www.neengineeringine.com April 3, 2007 Mr. Lincoln Daley d or •. North Andover PlanningBoard w, 1600 Osgood Street ' ; North Andover,MA 01845 : Re: 350 Holt Road Nb.Andover,MAk Request for Continuation Dear Mr. Daley, Per your request New England Engineering Services is requesting a continuance of the hearing scheduled for Tuesday April 3,2007. We further request that the subject property be scheduled for the next hearing on Tuesday,April 17,2007. If you have any questions or require further information,please do not•hesitate to call. Sincerely, Benjamin C. Osgood,Jr. P.E. President NEw ENGLANDENGiNEEPaNG SERVICES, INC. 1600 Osgood Street Building 20 Suite 2-64 North Andover, MA 01845 Tel: (978) 686-1768 • Fax: (978) 327-6138 Af www.neenginceringinc.com April 15,2007 Lincoln Daley North Andover Planning Board *, 400 Osgood Street North Andover,MA 01845 p�N°dry ?p0I Re: 350 Holt Road pFP� � M€Nr Dear Lincoln: This letter and the enclosed revised plans are being submitted in response to the Review letter received by this office on April 10,2007. The following plan revisions or comments are in response to the items listed in the letter. 1. The Board of Appeals did not vote on the request for a variance at their last meeting because they had not had time to review the plans and visit the site. I expect an approval at the next meeting. I suggest that the planning board approval be contingent upon the granting of the variance. 2. The plan has been revised to show the direction of slope, the steepness of the slope, and the top of the slope. 3. The height of the building has been indicated on the plan within the zoning table. 4. No response required. 5. No response required. 6. No response required. 7. No response required. 8. No response required. 9. No response required. 10. The new building will have the same finished floor elevation as the existing building. The foundation along the detention basin will be designed by the architect to act as a retaining wall to support the unbalanced fill which will be a result of the difference between interior elevation and exterior elevation. 11. The towns DPW representative has been present at TRC meetings and did not raise any objection to the new entrance location. 12. Curbing has been added to the west side of the new entry drive to keep stormwater from flowing off site. 13. Details for the segmental block retaining wall and pavements sections have been added to a new sheet two of the plans. 14. Rip Rap has been added at the pipe entrances. 15. The erosion control detail has been revised to show the direction of flow. 16. The slope of the proposed 18"pipe has been revised to be .5% 17. The pipe sizes and inverts have been added to the plans. These values were verified as part of the field survey. 18. If the pond were to overflow it would overflow in to the cul-de-sac. The elevation at the edge of the cul-de-sac is 37.37. Spot grades have been added along the edge of the pavement to verify this information on the plan. 19. The existing detention pond has collected silt over the years and the bottom is higher than the outlet of the pipe. Inspection of the pipe did not reveal any clogging of the pipe. To prevent this condition from occurring in the future the pond has been redesigned to have a bottom elevation 6" lower than the pipe outlet to create a shallow wet pond.A sediment forebay has also been added. These modification have been made to address comments from the conservation commission regarding the fact that the pond has accumulated silt and to provide some level of compliance with the stormwater management regulations. 24. The pond has been designed with 2:1 slopes which are consistent with the existing slopes in the pond. Grading of the slope was purposefully avoided to save the large trees which line the road at the top of the slope and maintain the screening they provide. If you need further information or clarification,please don't hesitate to contact this office. Sincerely, � C Benjamin C., Os goo , Jr. PE. President CC: Timothy B. McIntosh,VHB NEw ENGLAiNDENGMEMG SMVICES-, INC. 1600 Osgood Street Building 20 Suite 2-64 North Andover Planning Board North Andover, MA 01845 Tel: (978) 686-1768 • Fax: (978) 327-6138 Meeting Date:---------- www.neengineeringinc.com Agenda#: 99M September 8,2008 NEES Project# 1272 Judith Tymon,Planner North Andover Planning Board RECEIVED 400 Osgood Street North Andover, MA 01845 SEP 0 9'2008 NQR1 h AiwUVER Re: 350 Holt Rd,North Andover PLANNING DEPARTMENT As-Built plans Dear Ms. Tymon: Enclosed are revised as-built plans for the above referenced property. These plans contain one minor revision to address comments int a letter 11 dated August , 000 from.2 T"-- " L 1_5 UU0 nuperle P. Willis,P.E. Director of engineering.A complete response to each item in his letter is as follows. 1. The pond bottom was designed to be at elevation 33.19 as shown on the approved plans a copy of which is enclosed. The pond is designed to be a wet pond and has worked that way in the several storms we have had since its completion. Because the pond is a wet pond it will have to re-vegetate naturally with vegetation that will withstand the constant flooding conditions. The pond was not designed to infiltrate water however during the approval process it was acknowledged that because of the nature of the underlying soil infiltration would probably occur. 2. The invert and location shown for the 18"pipe where it outfalls in to the pond was erroneous. This has been corrected on the enclosed revised as-built plan. 3. The runoff volumes used in the design of the proposed plans was based upon the runoff from the entire site, including all of the existing and the proposed catch basins. A copy of the drainage map and drainage area map have been sent to Mr. Willis for his review. 4. The infiltration basin installed on the northwest comer of the addition was shown on the design plans and was modeled in the original drainage calculations. 5. The rip-rip adjacent to the cul-de-sac is there in the event the outlet to the pond becomes clogged. In the event of clogging the pond would overtop,water would run across the road and in to the swale on the other side of the road. This is how the pond was designed when the building was originally constructed. The rip-rap was added to protect the slope in the event the pond ever overtopped. 6. The stilling basins or sediment forbays were a part of the original design which was approved by the board. I am sending a copy of this response to Mr. Willis along with copies of the original design plans and drainage calculations so he can have a clearer picture as to what was proposed to determine if the property was constructed as designed. If you need further information or clarification,please don't hesitate to contact this office. Sincerely, Benj2in C., Osgood, Jr. PE. President CC: Eugene P. Willis,PE Director of Engineering � � � � tkORTiN � PLANNING DEPARTMENT [000UDhv Development Division � AGENDA ITEM#13 1[O; Planning Board FROM: Lincoln Daley,Town Y}uuoc / � R8: Crusader Paper Company, Inc., 350 Holt Road,Amueynor`o Map 78`Lot l Site Plan Special Permit to cnnabout an 18,000 u.f vvoruh000u addition to the existing � Industrial Building � DATE: April |2, 2OO7 3^rwpwmul; The applicant, Crusader Paper Company, is seeking approval to construct an 18,000 s.f. warehouse addition tothe existing industrial building located a1350 Holt Road, a 24 foot access drive expansion connecting the rear access area to Holt Road,and related grading work. Map 78,Lot I consists of 437,613 xI and is located iu the Industrial 2 Zoning District. Background: � This � the firutpublic hearing for the 18`000 mlvvaruhouae expansion. The application was submitted to � the Planning Department nn March 2, 2OO7. The Town's outside consultant, \/BB, conducted their first review of the application and submitted the attached review dated April lO, 2007. In addition, the applicant is before both the Zoning Board of Appeals (\/oriuuoo for parking relief) and Conservation Commission (Notice ofIntont). Below please find my review of the following plans submitted to this Department: Plan titled: Proposed Site Plan 35O Holt Road North Andover,M& Assessor Map 78,Parcel l Prepared for: Holt Road Realty,LLC. C/O Crusader Paper Co.` Inc. 3JO Holt Road,North Andover,MA0l845 Prepared 6v: New England Engineering Services,Inc. |OOO Osgood Street Building 20, Suite 2-64 North Andover, MD\OL&45 ld0O Osgood Street,North Andover,Massachusetts 01845 � Phone 978.688.9535 fax 978.688.9542 Web wnw.townnfnnrthondnvur.mm � Scale: 1"=40' Date: March 2,2007 Sheets: 1 of 1 SITE PLAN REVIEW: i. NORTH ARROW/LOCATION MAP: This has been provided on the plan. ii. SURVEY OF LOT/PARCEL: The parcel area is displayed on the plan. The applicant did not include a signed boundary survey of the property It is recommended that the Applicant submit a surveyed plot plan signed/stamped from a Licensed P.L.S. iii. NAME/DECRIPTION OF PROJECT: This has been provided in the title block of the plan labeled "Proposed Site Plan, 250 Holt Road, North Andover, MA, Assessors Map 78, Parcel 1"Office Building at 163 Main Street", and a review of the project is described within the application narrative. (See attached Application received 3/2/07) iv. EASEMENTS/LEGAL CONDITIONS: The plan shows three easements, one 50-foot wide railroad easement terminating at the southeastern terminus of the cul-de-sac,turnaround easement that includes the existing cul-de-sac, and a 10-foot wide slope easement that extends on the southern portion of the property abutting Holt. Road. The deed references associated with each of the easements are noted in the General Notes section of the plan. V. TOPOGRAPHY: This has been provided on the site plan at two-foot intervals. However, as noted in VHB's review, the existing contours do not cover the site completely. Some areas are simply labeled as "Steep Slope". In addition, the existing contours do not extend 50 feet beyond the site limits. The Applicant should revise or request a waiver from this section. At a minimum, VHB suggests adding arrows and actual values on the plan to indicate whether the "Steep Slopes"are sloping toward or away from the site, and at what rate. The plans should be revised to include all relevant contours. vi. ZONING INFORMATION: A zoning chart has been included on the March 2, 2007 Site Plan. The site is located in the Industrial 2 Zoning District. The site and parcel currently conform to the dimensional and setback requirements within the zone. However, the zoning chart should be revised to include allowed building heights and the proposed addition. Further, given the type of project (warehouse expansion), the proposed addition will not require signage and no additional parking. The applicant filed for a Variance with the Zoning Board of Appeals for a reduced number of parking spaces on site. Currently, the site contains 46 parking spaces. Approximately 121 are required under the Town's Zoning Bylaw. vii. STORMWATER DRAINAGE: Stormwater and roof runoff will be handled using the existing detention pond located on the western portion of the property. VHB has reviewed the proposed drainage and stormwater management plan and offers the following comments. 1. The Applicant is proposing to relocate an existing I8"pipe. Although the relocated pipe will be slightly steeper, its slope will remain below the typical minimum slope of 0.5%. As shown on the plans, the slope for the relocated pipe will be approximately 0.27%. The Applicant should consider making this pipe steeper so that "self-cleaning"velocities can be achieved 2. All existing pipe inverts and pipe sizes should be shown on the plans. Was this information verified during the "on the ground instrument survey"? 1600 Osgood Street,North Andover,Massachusetts 01845 Phone 978.688.9535 Fax 978.688.9542 Web www.townofnorthandover.com 3. The Hydrocad models for the existing and proposed detention ponds include a 50 foot broad crested weir, at elevation 37.37. It is not clear where this weir is located. Note that there is an area at the northern tip of the site where it appears water could overflow out of the detention pond at elevation 36+1--. 4. The existing 18-inch pipe that allows water to outlet the detention pond is shown to have an invert of 34.19, however the existing bottom of basin elevation is shown on the plans as 35.5+1--. There is also a 35.32 foot spot grade approximately 15 feet from the pipe inlet. Is this pipe partially buried? The Applicant should determine if the existing pipes downstream of this location are required to be cleaned. 5. Slopes for detention ponds are typically constructed at a minimum of 3:1. Has the Applicant considered using 3:1 slopes? It appears that additional storage volume could be found by grading the slope adjacent to Holt Road. Viii. BUILDING LOCATION: This section requires that the number of stories and overall height in feet of all structures be indicated on the plans. The plan should be revised to show the height of existing and proposed buildings/additions. ix. BUILDING ELEVATION: The Applicant has requested a waiver from providing building elevation plans. The proposed extension is to match the existing building. Planning Staff recommends that a simplified elevation be provided by the application. X. LOCATION OF PARKING/WALKWAYS: The site currently contains 44 parking spaces. The required number of parking spaces for the building and addition is approximately 121 (1 space per 1000 square feet). The applicant filed for a Variance with the Zoning Board of Appeals to allow for the reduced number. The applicant contends that the site/business has never employed more than 75 individual and is currently employing approximately 40 people. The applicant will appear before the Zoning Board of Appeals in early May. xi. LOCATION OF WETLANDS/NOTICE OF INTENT: The site plan states that wetlands do not exist within 100' of the project. xii. LOCATION OF WALLS/SIGNS: A sign is currently located on the southwestern portion of the property near the primary access. No new signage is being proposed as a result of the project. xiii. LOCATION OF ROADWAYS/DRIVES: Access to the site will be from existing curb cut off of Holt Road and a proposed access drive off of the Holt Road cul-de-sac. A technical review committee meeting was held regarding this application. At that time, the Fire Department and the DPW supported the idea of an additional access behind the building. The applicant, however, should receive written confirmation from the both divisions. VHB has reviewed the proposed roadway extension and offers the following comments. 1. Is the finished floor elevation of the proposed extension going to match the existing building (45.42 feet)? Proposed contours around the extension are at elevation 138. How will this 7- foot difference be made up? 2. A secondary access point on Holt Road is proposed for this development. VHB assumes that a secondary access point will be positively viewed by the North Andover Fire Department. Has the Town's DPW commented on this secondary access? 3. Will the new access drive have any edge treatments (i.e. curbing)? xiv. OUTDOOR STORAGE/DISPLAY AREAS: There is no outdoor storage being proposed. 1600 Osgood Street,North Andover,Massachusetts 01845 Phone 978.688.9535 Fax 978.688.9542 Web www.townofnorthandover.com xv. LANDSCAPING PLAN: The Applicant has requested a waiver from providing landscaping plans. No landscaping is proposed. xvi. REFUSE AREAS: No dumpsters are proposed. xvii. LIGHTING FACILITIES: The Applicant has requested a waiver from providing lighting plans. No new lighting is proposed. The applicant should clam why no additional lighting is being proposed xviii. DRAINAGE BASIN STUDY: Please refer to Section vii for responses. xix. TRAFFIC IMPACT STUDY: The Applicant has requested a waiver from providing a Traffic Impact Study. Traffic impacts are not anticipated. xx. EROSION CONTROLS: None proposed on the plan. VHB has reviewed the proposed erosion control management plan and offers the following comments. 1. Erosion protection (i.e. rip rap) should be proposed at the outlet of the relocated 18"flared end section. 2. The Erosion Control Detail should speck the direction of f ow of the runoff(i.e. will runoff meet the bales of hay first or the fencing?). xxi. COMMONWEALTH REVIEW: No reports filed with any Sta�e Agency in support of this project.Applicant is asking for a waiver. / xxii. UTILITIES: The site will be serviced by municipal al services. xxiii. FISCAL IMPACT: No fiscal impact study has been completed. Applicant is asking for a waiver. xxiv. COMMUNITY IMPACT: No community impact study has been completed. Applicant is asking for a waiver. General Comments: 1. Details should be provided for the following items: a. Proposed segmental block retaining wall with guardrail b. Pavement section. Recommendation: ➢ Continue the application to the May I" meeting to allow applicant to responds to Town and VHB comments and revise the plans accordingly. 1600 Osgood Street,North Andover,Massachusetts 01845 Phone 978.688.9535 Fax 978.688.9542 Web www.townofnorthandover.com TOWN OF NORTH ANDOVER PLANNING BOARD ENGINEERING REVIEW OF A SITE PLAN SPECIAL PERMIT FOR CONFORMANCE WITH THE TOWN OF NORTH ANDOVER ZONING BYLAW Plan Title: Proposed Site Plan VHB No.: 09280.30 Location: 350 Holt Road,North Andover,MA Applicant: Crusader Paper Company,Inc. 350 Holt Road,North Andover,MA Applicant's Engineer: New England Engineering Services, Inc. 1600 Osgood Street,North Andover,MA Plan Date: March 2,2007 Review Date: April 10,2007 The plans were reviewed for conformance to the 1972 Town of North Andover Zoning Bylaw(last amended July 10,2006). The Applicant has submitted the following information for VHB's review: • Application& Supplemental Information for Site Plan Review Special Permit; • Proposed Site Plan,dated March 2,2007(1 Sheet); • Drainage Report, dated March 2,2007. The following comments note non-conformance with specific sections of the Zoning Bylaw and general questions/comments on the proposed design and VHB's recommendations/suggestions. Town of North Andover Zoning Bylaw 1. Section 8.1.6—Justification has been submitted for providing fewer spaces than required in Section 8.1.2. This requires a variance from the Board of Appeals. Has a variance been granted? 2. Section 8.3.5.e.v—The existing contours do not cover the site completely. Some areas are simply labeled as"Steep Slope". In addition,the existing contours do not extend 50 feet beyond the site limits. The Applicant should revise or request a waiver from this section. At a minimum, VHB suggests adding arrows and actual values on the plan to indicate whether the"Steep Slopes"are sloping toward or away from the site,and at what rate. 3. Section 8.3.5.e.viii—This section requires that the number of stories and overall height in feet of all structures be indicated on the plans. 4. Section 8.3.5.e.ix—The Applicant has requested a waiver from providing building elevation plans. The proposed extension is to match the existing building. 5. Section 8.3.5.e.xv—The Applicant has requested a waiver from providing landscaping plans. No landscaping is proposed. 6. Section 8.3.5.e.xvii—The Applicant has requested a waiver from providing lighting plans. No new lighting is proposed. 7. Section 8.3.5.e.xix—The Applicant has requested a waiver from providing a Traffic Impact Study. Traffic impacts are not anticipated. 8. Section 8.3.5.e.xxii—The Applicant has requested a waiver from providing a Fiscal Impact Study. 9. Section 8.3.5.e.xxiii—The Applicant has requested a waiver from providing a Community Impact Analysis. 1 F:\North Andover\Reviews\2007\0928030-Crusader-l.doc General Comments/Standard Engineering Practice 10. Is the finished floor elevation of the proposed extension going to match the existing building(45.42 feet)? Proposed contours around the extension are at elevation 138.How will this 7-foot difference be made up? 11. A secondary access point on Holt Road is proposed for this development. VHB assumes that a secondary access point will be positively viewed by the North Andover Fire Department. Has the Town's DPW commented on this secondary access? 12. Will the new access drive have any edge treatments(i.e. curbing)? 13. Details should be provided for the following items: a. Proposed segmental block retaining wall with guardrail, b. Pavement section. 14. Erosion protection(i.e.rip rap)should be proposed at the outlet of the relocated 18"flared end section. 15. The Erosion Control Detail should specify the direction of flow of the runoff(i.e.will runoff meet the bales of hay first or the fencing?). Drainage Comments 16. The Applicant is proposing to relocate an existing 18"pipe. Although the relocated pipe will be slightly steeper, its slope will remain below the typical minimum slope of 0.5%. As shown on the plans,the slope for the relocated pipe will be approximately 0.27%. The Applicant should consider making this pipe steeper so that"self-cleaning"velocities can be achieved. 17. All existing pipe inverts and pipe sizes should be shown on the plans. Was this information verified during the"on the ground instrument survey"? 18. The Hydrocad models for the existing and proposed detention ponds include a 50-foot broad crested weir,at elevation 37.37. It is not clear where this weir is located. Note that there is an area at the northern tip of the site where it appears water could overflow out of the detention pond at elevation 36+/-. 19. The existing 18-inch pipe that allows water to outlet the detention pond is shown to have an invert of 34.19,however the existing bottom of basin elevation is shown on the plans as 35.5+/-. There is also a 35.32-foot spot grade approximately 15 feet from the pipe inlet. Is this pipe partially buried? The Applicant should determine if the existing pipes downstream of this location are required to be cleaned. 20. Slopes for detention ponds are typically constructed at a minimum of 3:1. Has the Applicant considered using 3:1 slopes? It appears that additional storage volume could be found by grading the slope adjacent to Holt Road. It is recommended that the Applicant provide WRITTEN RESPONSES to the issues and comments contained herein. Reviewed by: Date: Darryl Gallant Civil Engineer—Highway and Municipal Checked by: Date: Timothy B.McIntosh,P. E. Project Manager—Highway and Municipal 2 F:\North Andover\Reviews\2007\0928030-Crusader-l.doc Ippolito, Mary From: Melnikas, Andrew Sent: Thursday, April 26, 2007 4:18 PM To: Ippolito, Mary Subject: RE: 350 Holt Road (addition of 18,000 s.f.) no problern -----Original Message----- From: Ippolito,Mary Sent: Thursday,April 26,2007 4:18 PM To: Melnikas,Andrew Subject: RE:350 Holt Road(addition of 18,000 s.f.) thanks Andy Mary -----Original Message----- From: Melnikas,Andrew Sent: Thursday,April 26,2007 3:48 PM To: Ippolito,Mary Subject: RE:350 Holt Road(addition of 18,000 s.f.) Good afternoon Mary: At the TRC meeting on this expansion ,the representatives frorn Crusader Paper were told that they would need to extend the sprinklers frorn the existing plant into the new addition Andy -----Original Message----- From: Ippolito,Mary Sent: Thursday,April 26,20071:46 PM To: Melnikas,Andrew Cc: Daley,Lincoln Subject: 350 Holt Road(addition of 18,000 s.f.) Hi Andy, At the last Planning Board meeting the Board asked if the project on 350 Halt Road (Crusader Paper) requires sprinklers. We've kept the PB meeting open until May 1 st. Could you get back to me and let me know about the sprinklers? have the plan in my office. Best per sr ncd r,egar d , Mary Ippolito, lI n �inq Department Osgood Landing Town of North Andover 1600 Osgood Street Bldg. 20, -Suite 2-36, Planning Department North Andover, MA 01845 P 978-688-9535 F 978-688-9542 i Ippolito, Mary From: Ippolito, Mary Sent: Thursday, July 31, 20081:41 PM To: Willett, Tim Subject: RE: 350 Holt Road bond release. North Andover Planning Board ok Meeting Date: Agenda#: -----Original Message----- From: Willett,Tim Sent: Thursday,July 31,2008 1:40 PM To: Ippolito, Mary Subject: RE: 350 Holt Road bond release. Mary, There are no water/sewer concerns for this project. -----Original Message----- From: Ippolito, Mary Sent:Thursday, July 31, 2008 1:30 PM To: Willett,Tim; Willis, Gene; Yarid, Jennifer Subject: FW:350 Holt Road bond release. Hi Tim and Gene, See the attached letter from Ben Osgood Jr. regarding 350 Holt Road. I have sent a copy of the as-built to Tim's attention plse. let me know if you have any issues with this. Jennifer, Can you verify what the balance in the account is? Best personal regards, Mary Ippoiito, Planning Department Osgood Landing Town of North Andover 1600 Osgood Street Bldg.20, -Suite 2-36, Planning Department North Andover, MA 01845 P 978-688-9535 F 978-688-9542 mippolito@townofnorthandover.com -----Original Message----- From: noreply @yourcopier.com[mai Ito:norepiy @ yourcopier.com] Sent: Thursday,July 31,2008 2:15 PM To: Ippolito, Mary Subject: Message from KMBT_600 «File: SKMBT 60008073113140.pdf>> 1 TOWN OF NORTH ANDOVER DIVISION OF PUBLIC WORKS 384 OSGOOD STREET NORTH ANDOVER, MASSACHUSETTS 01845-2909 J. WILLIAM HMURCIAK,DIRECTOR,P.E. Eugene P. 97illis P.E Q�.w� Tk Telephone (978) 685-0950 Director of Engineering Fax (978) 688-9573 August 13, 2008 North Andover Planning Board North Andover Planning Dept. 1600 Osgood St. N. Andover, MA. Re: 350 Holt Rd. as-built plan(d-pond)New England Engineering dated July 30, 2008 Dear Board Members: I have reviewed the above referenced plan, compared it to the design plan, and made a site visit. I offer the following comments for the engineer to address: 1. The design elevation for bottom of basin is 34.5. The invert out is 34.19. The as-built bottom of basin is<33.0. There is standing water in the pond; no grass/vegetation is growing. It appears the bottom of pond may be silted up causing it to hold water. Is this supposed to be an infiltration pond? Will vegetation ever be able to establish itself? 2. The DMH in the N.E. corner of the building has an invert out of 35.10 and an invert at the outfall of 37.29, more than 2' higher. This causes a negative slope in the pipe. Pipe should be relaid. 3. The as-built plan shows a catch basin has been added from the western side of the west driveway. Has this runoff volume been included in the model? 4. The as-built plan shoves infiltrators have been added from the northwest side of the addition. Has this runoff volume been included in the model? 5. Rip rap has been added on the south side of the cul-de-sac. Is runoff from road flowing to basin? Has this runoff volume been included in the model? 6. Stilling basins have been added to both ends of the pond. Sincerely, J � Eugene P. Willis, P.E. Director of Engineering TOWN OF NORTH ANDOVER DIVISION OF PUBLIC WORKS 384 OSGOOD STREET NORTH ANDOVER,MASSACHUSETTS 01845-2909 J.WILLIAM HMURCIAK,DIRECTOR,P.E. Eugene P. Willis RE �.NO�Rh� Telephone (978) 685-0950 zpE `' 0o (978 688-9573 _. Director of Engineering Fax:� � v� ., � ) September 10, 2008 "u� =Date* Andover Planning I3�a North Andover Planning Board Meeting North Andover Planning Dept. ' 1600 Osgood St. N. Andover,MA. Re: 350 Holt Rd. as-built plan (d-pond):New England Engineering dated July 30, 200$ Dear Board Members: I am in receipt of a letter from New England Engineering Services dated Sept. 8, 2008. In that letter all of my previous comments for the above reference project have been satisfactorily addressed. Sincerely, Eugene P. Willis,P.E. Director of Engineering Cc: File