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HomeMy WebLinkAboutMiscellaneous - 15 TIMBER LANE NORTH t li�E D °f'*`�° "" Town of y , °� North Andover }+ ,, 1: .'C C F f;F Office of the Planning Department Division of Community Development 200 ��` �7 P � 'SSA H�s� god Street p 1600 Oso T O `i.1 North Andover,Massachusetts 01845 NORTH At!DOVER MASSAC;•4;lSEi 1'S NOTICE OF DECISION Any appeal shall be filed within (20) days after the date of filing this notice in the office of the Town Clerk Date: August 22,2007 Date of Hearings: July 17, 2007,August 7,2007, August 21,2007 Date of Decision: August 21, 2007 Petition of: H.David &Allyson Fournier, 15 Timber Lane,North Andover,MA 01845 Premises Affected: 15 Timber Lane,North Andover,MA 01845,Assessor's Map 64,Parcel 38, within the Residential I Zoning District. Referring to the above petition for a Watershed Special Permit from the requirements of the North Andover Zoning Bylaw, Section 4.136. So as to allow: to raze existing single-family dwelling and construct a new 9,600 s.f single-family residential dwelling, attached garage and deck, 29 ft. x 60 ft. pool, installation of underground utilities, and grading work, and other improvement within the Non-Disturbance and Non-Discharge Zones of the Watershed Protection District. After a public hearing given on the above date, the Planning Board voted to APPROVE a Watershed Special Permit for the Watershed Protection District, based upon the following conditions: orth Andover Plann g Board Richard Nardella,Chairman John Simons,Vice Chairman ❑Abutters Alberto Angles,Clerk ❑SurroundingTowns s Richard Rowen Tim Siebert Bldg. ZBA Con/Com Health Fire Chief Police Chief Town Clerk DPW/Engineers 15 Timber Lane,Map 64,Parcel '18, Watershed Special Permit—Construction of Single-Family Residence and Pool August 21,2007 The public hearing on the above referenced application was opened July 1 y the North Andover Planning Board on August 7, 2007. Attorney Donald Borenstein was pres07 ent closed and represented the applicants. On August 21, 2007, upon a motion made by Richard Rowen and 2nd by John Simons,the Planning Board voted to GRANT a Watershed Special Permit to raze the existing single-family dwelling and construct a new 9,600 s.f single-family residential dwelling,attached garage and deck,29 ft. x 60 ft. pool, installation of underground utilities, grading work, and other improvement within the Non- Disturbance and Non-Discharge Zones of the Watershed Protection District, under the requirements of Section 4.136 & 10.3 of the North Andover Zoning Bylaw. This Special Permit was requested by H. David&Allyson Fournier, 15 Timber Lane,North Andover, MA 01845 on June 15,2007.The applicant submitted a complete application,which was noticed and reviewed in accordance with Section 10.52 of the Town of North Andover Zoning Bylaw and MGL Chapter 40A, Section 9. The motion to approve was subject to the FINDINGS OF FACTS and SPECIAL CONDITIONS set forth in Appendix A to this decision. The Planning Board voted on the motion by a vote of 5-0. A Special permit issued by the Special Permit granting authority requires a vote of at least four members of a five-member board. The applicant is hereby notified that should the applicant disagree with this decision, the applicant has the right, under MGL Chapter 40A, Section 17,to appeal to this decision within twenty days after the date this decision has been filed with the Town Clerk. In accordance with 4.136 the Planning Board makes the finding that the intent of the Bylaw, as well as its specific criteria, are met. This decision specifically stated by the Planning Board makes the following FINDINGS OF FACT: I. That as a result of the proposed construction in conjunction with other uses nearby,there will not be any significant degradation of the quality or quantity of water in or entering Lake Cochichewick. The Planning Board bases this finding on the following facts: A) The proposed replacement of a single-family residence will be connected to the Town sewer and water systems from Timber Lane; B) The topography of the site will not be altered substantially. The single-family residence and proposed driveway were specially designed and located closer to Timber Lane to minimize the amount of grading/topographical changes and take advantage of natural features of the property. Further, the proposed pool patio will be comprised of pervious surface that will provide sufficient infiltration. The construction of the proposed storm water management measures and erosion control measures will use Best Management and Engineering Practices and not substantially alter the topography of the site; C) The limit of clearing and impact is restricted to the minimum necessary to construct the proposed single-family residence,driveway,and pool as shown on the plan; and D) The construction of the single-family residence and pool has been reviewed by the Town's outside consultant and Town Planner and determined that there will be no degradation to the quality or quantity of water in or entering ty 9 t3' tering the isolated vegetated wetland or Lake Cochichewick. 2 15 Timber Lane,Map 64,Parcel 38. Watershed Special Permit-Construction of Single-Family Residence and Pool August-2 1,2007 E) The construction will have diminutive impact in the Non-Disturbance buffer zone as it includes the replacement of the existing single-family residential structure foundation with a similar the proposed pool. footprint for 2) There is no reasonable alternative location outside the Non-Discharge and Non-Disturbance Zones for any discharge, structure or activity. In accordance with Section 10.31 of the North Andover Zoning Bylaw, the Planning Board makes the following FINDINGS OF FACT: 1) The specific site is an appropriate location for the proposed use as all feasible storm water and erosion controls have been placed on the site; 2) The use will not adversely affect the neighborhood as the lot is located in a Residential 1 Zoning District; 3) There will be no nuisance or serious hazard to vehicles or pedestrians; 4) Adequate and appropriate facilities are provided for the proper operation of the proposed use; 5) The existing lot conforms to the minimum lot area requirements for a lot within the Residential I Zoning District as shown in Table 2 of the North Andover Zoning By-laws. 6) The Planning Board also makes a specific finding that the use is in harmony with the general purpose and intent of the North Andover Zoning Bylaw. Upon reaching the above findings,the Planning Board approves this Special Permit based upon the following SPECIAL CONDITIONS: 1) Permit Definitions: A) The"Locus"refers to the 64,495 sq. ft.parcel of land with land fronting on Timber Lane as shown on Assessors Map 64, Parcel 38, and also known as 15 Timber Lane,North Andover, Massachusetts, B) The"Plans"refer to the plans prepared by Cammett Engineering dated March 20,2007,revised July,27, 2007 entitled "Watershed District Special Permit Plan, Single Family Dwelling, 15 Timber Lane,North Andover,Essex County"and consisting of sheet 1 of 1. C) The"Project"or"15 Timber Lane"refers to the razing of the existing single-family dwelling and construct a new 9,600 s.fsingle-family residential dwelling,attached garage and deck,29 ft.x 60 ft. pool, installation of underground utilities, grading work, and other improvement shown on the"Plans"as defined above. D) The"Applicant"refers to H. David&Allyson Fournier, 15 Timber Lane,North Andover, MA 01845,the applicant for the Special Permit. E) The"Project Owner"refers to the person or entity holding the fee interest to the title to the Locus from time to time, which can include but is not limited to the applicant, developer, and owner. 3 15 Timber Lane,Map 64,Parcel 38. Watershed Special Permit—Construction of Single-Family Residence and Pool August 21,2007 2) The Town Planner shall approve any changes made to these plans. Any changes deemed substantial by the Town Planner would require a public hearing and modification by the Planning Board. . 3) Prior to issuance of a building permit: A) A performance guarantee bond of three thousand dollars($3,000.00)made out to the Town of North Andover must be posted to insure that the construction,erosion control,measures,and performance of any other condition contained herein will take place in accordance with the plans and the conditions of this decision and to ensure that the as-built plans will be submitted. B) All erosion control measures as shown on the plan must be in place and reviewed by the Town Planner and Conservation Department. Weekly inspections of all erosion control measures will be completed by the designated independent Environmental Monitor and incorporated into the weekly reports as part of the approved July 17, 2007 Watershed Special Permit for the project. C) No pesticides,fertilizers or chemicals shall be used in lawn care or maintenance. The applicant shall incorporate this condition as a deed restriction and a copy of the recorded deed shall be submitted to the Town PIanner and included in the file. 4) Prior to release of the Performance Bond: A) The applicant shall submit an as-built plan stamped by a Registered Professional Engineer in Massachusetts that shows all construction, including storm water mitigation trenches and other pertinent site features. This as-built plan shall be submitted to the Town Planner for approval. The applicant must submit a certification from the design engineer that the site was constructed as shown on the approved plan. B) The Planning Board must by a majority vote make a finding that the site is in conformance with the approved plan. 5) In no instance shall the applicants proposed construction be allowed to further impact the site other than as proposed on the plan referenced in Condition#10. 6) No open burning shall be done except as is permitted during burning season under the Fire Department regulations. 7) The Contractor shall contact Dig Safe at least 72 hours prior to commencing excavation. 8) The provisions of this conditional approval shall apply to and be binding upon the applicant, its employees and all successors and assigns in interest or control. 9) This Special Permit approval shall be deemed to have lapsed August 21, 2009 (two years from the date of issuance) exclusive of the time required to pursue or await determination of any appeals, unless substantial PP al use or construction n has commenced within said two-year construction will be determined by a majority vote of the Planning Boarperiod. Substantial use or 10) This decision must be filed with the North Essex Registry of Deeds. The following information is included as part of this decision: A) Plan titled: Watershed District Special Permit Plan Single Family Dwelling, 15 Timber Lane, North Andover,Essex County Prepared for: H. David &Allyson Fournier 4 w 15 Timber Lane, Map 64,Parcel 38. Watershed Special Permit—Construction of Single-Family Residence and Pool August 21,2007 -ti ('�IVEC� } n w'.4� `.f. kiri 1 r E 15 Timber Lane,North Andover, MA 01845 Prepared by: Cammett Engineering 2037 AUG 27 N. 4: 01 297 Elm Street Amesbury,MA !TOA I it 0s= Scale: l"=20' HORTH A?QbVER Date: March 30,2007,Revised July 27,2007 MASSACHUSE;T a Sheets: 1 of 1 B) Report titled: Stormwater Analysis Prepared for: H. David&Allyson Fournier 15 Timber Lane,North Andover, MA 01845 Prepared by: Cammett Engineering 297 Elm Street Amesbury,MA Date: March 2007 cc: Director of Public Works Building Inspector Town Manager Conservation Administrator Planning Board Police Chief Fire Chief Applicant Engineer File 5 P • �1 Of Noar" `+ ElVED ." Town of No 111N � _ f,w, North Andover �'��,� ::..���; S GE�'�uE Office of the Planning Department Division of Community Development 2007 AUG 27 P 4: 00 HU 1600 1600 Osgood Street TOWN O F North Andover,Massachusetts 01845 NORTH ANDOVER MASSACHUSETTS NOTICE OF DECISION Any appeal shall be filed within (20)-days after the date of filing this notice in the office of the Town Clerk. Date: August 22,2007 Date of Hearings: July 17,2007,August 7,2007, . August 21,2007 Date of Decision: August 21,2007 Petition of: H.David &Allyson Fournier, 15 Timber Lane,North Andover,MA 01845 Premises Affected: 15 Timber Lane,North Andover,MA 01845,Assessor's Map 64,Parcel 38, within the Residential 1 Zoning District. Referring to the above petition for a Watershed Special Permit from the requirements of the North Andover Zoning Bylaw, Section 4.136. So as to allow: to raze existing single-family dwelling and construct a new 9,600 sf single-family residential dwelling, attached garage and deck, 29 ft. x 60 ft. pool, installation of underground utilities, and grading work, and other improvement within the Non-Disturbance and Non-Discharge Zones of the Watershed Protection District. After a public hearing given on the above date, the Planning Board voted to APPROVE a Watershed Special Permit for the Watershed Protection District, based upon the following conditions: orth Andover Plann g Board �• Richard Nardella,Chairman John Simons,Vice Chairman ❑Abutters Alberto Angles,Clerk ❑Surrounding Towns Richard Rowen Tim Siebert Bldg. ZBA Con/Com Health Fire Chief Police Chief Town Clerk DPW/Engineers 15 Timber Lane,Map 64,Parcel 38. Watershed Special Permit—Construction of Single-Family Residence and Pool August 21,2007 The public hearing on the above referenced application was opened July 17,2007 and closed by the North Andover Planning Board on August 7, 2007. Attorney Donald Borenstein was present and represented the applicants. On August 21,2007,upon a motion made by Richard Rowen and 2nd by John Simons,the Planning Board voted to GRANT a Watershed Special Permit to raze the existing single-family dwelling and construct a new 9,600 s.f single-family residential dwelling, attached garage and deck,29 ft.x 60& pool, installation of underground utilities, grading work, and other improvement within the Non- Disturbance and Non-Discharge Zones of the Watershed Protection District,under the requirements of Section 4.136& 10.3 of the North Andover Zoning Bylaw. This Special Permit was requested by H. David&Allyson Fournier, 15 Timber Lane,North Andover MA 01845 on June 15,2007.The applicant submitted a complete application,which was noticed and reviewed in accordance with Section 10.52 of the Town of North Andover Zoning Bylaw and MGL Chapter 40A, Section 9. The motion to approve was subject to the FINDINGS OF FACTS and SPECIAL CONDITIONS set forth in Appendix A to this decision. The Planning Board voted on the motion by a vote of 5-0. A Special permit issued by the Special Permit granting authority requires a vote of at least four members of a five-member board. The applicant is hereby notified that should the applicant disagree with this decision, the applicant has the right, under MGL Chapter 40A, Section 17,to appeal to this decision within twenty days after the date this decision has been filed with the Town Clerk. In accordance with 4.136 the Planning Board makes the finding that the intent of the Bylaw, as well as its specific criteria, are met. This decision specifically stated by the Planning Board makes the following FINDINGS OF FACT: 1. That as a result of the proposed construction in conjunction with other uses nearby,there will not be any significant degradation of the quality or quantity of water in or entering Lake Cochichewick. The Planning Board bases this finding on the following facts: A) The proposed replacement of a single-family residence will be connected to the Town sewer and water systems from Timber Lane; B) The topography of the site will not be altered substantially. The single-family residence and proposed driveway were specially designed and located closer to Timber Lane to minimize the amount of grading/topographical changes and take advantage of natural features of the property. Further, the proposed pool patio will be comprised of pervious surface that will provide sufficient infiltration. The construction of the proposed storm water management measures and erosion control measures will use Best Management and Engineering Practices and not substantially alter the topography of the site; C) The limit of clearing and impact is restricted to the minimum necessary to construct the proposed single-family residence,driveway,and pool as shown on the plan;and D) The construction of the single-family residence and pool has been reviewed by the Town's outside consultant and Town Planner and determined that there will be no degradation to the quality or quantity of water in or entering the isolated vegetated wetland or Lake Cochichewick. 2 15 Timber Lane,Map 64,Parcel 38. _ Watershed Special Permit—Construction of Single-Family Residence and Pool y August 21,2007 E) The construction will have diminutive impact in the Non-Disturbance buffer zone as it includes the replacement of the existing single-family residential structure foundation with a similar footprint for the proposed pool. 2) There is no reasonable alternative location outside the Non Discharge and Non-Disturbance Zones for any discharge,structure or activity. In accordance with Section 10.31 of the North Andover Zoning Bylaw, the Planning Board makes the following FINDINGS OF FACT: 1) The specific site is an appropriate location for the proposed use as all feasible storm water and erosion controls have been placed on the site; 2) The use will not adversely affect the neighborhood as the lot is located in a Residential 1 Zoning District; 3) There will be no nuisance or serious hazard to vehicles or pedestrians; 4) Adequate and appropriate facilities are provided for the proper operation of the proposed use; 5) The existing lot conforms to the minimum lot area requirements for a lot within the Residential 1 Zoning District as shown in Table 2 of the North Andover Zoning By-laws. 6) The Planning Board also makes a specific finding that the use is in harmony with the general purpose and intent of the North Andover Zoning Bylaw. Upon reaching the above findings,the Planning Board approves this Special Permit based upon the following SPECIAL CONDITIONS: 1) Permit Definitions: A) The"Locus"refers to the 64,495 sq. ft.parcel of land with land fronting on Timber Lane as shown on Assessors Map 64,Parcel 38,and also known as 15 Timber Lane,North Andover, Massachusetts. B) The"Plans"refer to the plans prepared by Cammett Engineering dated March 20,2007,revised July,27, 2007 entitled"Watershed District Special Permit Plan, Single Family Dwelling, 15 Timber Lane,North Andover,Essex County"and consisting of sheet 1 of 1. C) The"Project"or"15 Timber Lane"refers to the razing of the existing single-family dwelling and construct a new 9,600 s.f. single-family residential dwelling,attached garage and deck,29 ft.x 60 ft. pool, installation of underground utilities, grading work, and other improvement shown on the"Plans"as defined above. D) The"Applicant"refers to H.David&Allyson Fournier, 15 Timber Lane,North Andover,MA 01 845,the applicant for the Special Permit. E) The"Project Owner"refers to the person or entity holding the fee interest to the title to the Locus from time to time,which can include but is not limited to the applicant,developer, and owner. 3 I 15 Timber Lane,Map 64,Parcel 38. Watershed Special Permit—Construction of Single-Family Residence and Pool August 21,2007 2) The Town Planner shall approve any changes made to these plans. Any changes deemed substantial by the Town Planner would require a public hearing and modification by the Planning Board. 3) Prior to issuance of a building permit: A) A performance guarantee bond of three thousand dollars($3,000.00)made out to the Town of North Andover must be posted to insure that the construction,erosion control,measures,and performance of any other condition contained herein will take place in accordance with the plans and the conditions of this decision and to ensure that the as-built plans will be submitted. B) All erosion control measures as shown on the plan must be in place and reviewed by the Town Planner and Conservation Department. Weekly inspections of all erosion control measures will be completed by the designated independent Environmental Monitor and incorporated into the weekly reports as part of the approved July 17, 2007 Watershed Special Permit for the project. C) No pesticides,fertilizers or chemicals shall be used in lawn care or maintenance. The applicant shall incorporate this condition as a deed restriction and a copy of the recorded deed shall be submitted to the Town Planner and included in the file. 4) Prior to release of the Performance Bond: A) The applicant shall submit an as-built plan stamped by a Registered Professional Engineer in Massachusetts that shows all construction, including storm water mitigation trenches and other pertinent site features. This as-built plan shall be submitted�tted to the Town Planner for P approval. The applicant must submit a certification from the design engineer that the site was constructed as shown on the approved plan. B) The Planning Board must by a majority vote make a finding that the site is in conformance with the approved plan. 5) In no instance shall the applicant's proposed construction be allowed to further impact the site other than as proposed on the plan referenced in Condition#10. 6) No open burning shall be done except as is permitted during burning season under the Fire Department regulations. 7) The Contractor shall contact Dig Safe at least 72 hours prior to commencing excavation. 8) The provisions of this conditional approval shall apply to and be binding upon the applicant, its employees and all successors and assigns in interest or control. 9) This Special Permit approval shall be deemed to have lapsed August 21, 2009 (two years from the date of issuance) exclusive of the time required to pursue or await determination of any appeals, unless substantial use or construction has commenced within said two-year period. Substantial use or construction will be determined by a majority vote of the Planning Board. 10) This decision must be filed with the North Essex Registry of Deeds. The following information is included as part of this decision: A) Plan titled: Watershed District Special Permit Plan Single Family Dwelling, 15 Timber Lane, North Andover,Essex County Prepared for. H. David&Allyson Fournier 4 15 Timber Lane,Map 64,Parcel 38. Watershed Special Permit—Construction of Single-Family Residence and Pool August 21,2007 R'CE IED T0WN' C'_ERK'S G F F 10E 15 Timber Lane,North Andover,MA 01845 Prepared by: Cammett Engineering 2091 AUG 27 PM 4 0 297 Elm Street TOWN O Amesbury,MA ���,�� ANDOVER Scale: 1"=20' ����� � ��.�! Date: March 30,2007,Revised July 27,2007 Sheets: 1 of 1 B) Report titled: Stormwater Analysis Prepared for: H. David&Allyson Fournier 15 Timber Lane,North Andover,MA 01845 Prepared by: Cammett Engineering 297 Elm Street Amesbury,MA Date: March 2007 cc: Director of Public Works Building Inspector Town Manager Conservation Administrator Planning Board Police Chief Fire Chief Applicant Engineer j File 5 c � p10RT1i q $ �,0%.;. Town of North Andover ° AUG 01 Office of the Planning Departmei�i � FM 4: ° d* Division of Community Development i.a''#`f },r AT �PPsS 1600 Osgood Street 1,NTH dkH,U^`�;, SSgcNorth Andover,Massachusetts 01845 PIQSS ` `�i NOTICE OF DECISION Any appeal shall be filed within (20) days after the date of filing this notice in the office of the Town Clerk. Date: August 22,2007 Date of Hearings: July 17,2007,August 7,2007, August 21,2007 Date of Decision: August 21,2007 Petition of: H.David&Allyson Fournier, 15 Timber Lane,North Andover,MA 01845 Premises Affected: 15 Timber Lane,North Andover,MA 01845,Assessor's Map 64,Parcel 38, within the Residential 1 Zoning District. Referring to the above petition for a Watershed Special Permit from the requirements of the North Andover Zoning Bylaw, Section 4.136. So as to allow: to raze existing single-family dwelling and construct a new 9,600 s.f. single-family residential dwelling, attached garage and deck, 29 ft. x 60 ft. pool, installation of underground utilities, and grading work, and other improvementwithinthe Non-Disturbance and Non-Discharge Zones of the Watershed Protection District. After a public hearing given on the above date, the Planning Board voted to APPROVE a Watershed Special Permit for the Watershed Protection District, based upon the following conditions: oh o4 North Andover Plan ng Board Richard Nardella,Chairman John Simons,Vice Chairman Alberto Angles,Clerk Richard Rowen Tim Siebert i 15 Timber Lane,Map 64,Parcel 38. Watershed Special Permit—Construction of Single-Family Residence and Pool August 21,2007 The public hearing on the above referenced application was opened July 17,2007 and closed by the North Andover Planning Board on August 7, 2007. Attorney Donald Borenstein was present and represented the applicants. On August 21,2007,upon a motion made by Richard Rowen and 2nd by John Simons,the Planning Board voted to GRANT a Watershed Special Permit to raze the existing single-family dwelling and construct a new 9,600 s.£ single-family residential dwelling,attached garage and deck,29 ft.x 60 ft. pool, installation of underground utilities, grading work,and other improvement within the Non- Disturbance and Non-Discharge Zones of the Watershed Protection District, under the requirements of Section 4.136 & 10.3 of the North Andover Zoning Bylaw. This Special Permit was requested by H. David&Allyson Fournier, 15 Timber Lane,North Andover,MA 01845 on June 15,2007. The applicant submitted a complete application,which was noticed and reviewed in accordance with Section 10.52 of the Town of North Andover Zoning Bylaw and MGL Chapter 40A, Section 9.The motion to approve was subject to the FINDINGS OF FACTS and SPECIAL CONDITIONS set forth in Appendix A to this decision. The Planning Board voted on the motion by a vote of 5-0. A Special permit issued by the Special Permit granting authority requires a vote of at least four members of a five-member board. The applicant is hereby notified that should the applicant disagree with this decision, the applicant has the right, under MGL Chapter 40A, Section 17,to appeal to this decision within twenty days after the date this decision has been filed with the Town Clerk. In accordance with 4.136 the Planning Board makes the fording that the intent of the Bylaw, as well as its specific criteria, are met. This decision specifically stated by the Planning Board makes the following FINDINGS OF FACT: 1. That as a result of the proposed construction in conjunction with other uses nearby,there will not be any significant degradation of the quality or quantity of water in or entering Lake Cochichewick. The Planning Board bases this finding on the following facts: A) The proposed replacement of a single-family residence will be connected to the Town sewer and water systems from Timber Lane; B) The topography of the site will not be altered substantially. The single-family residence and proposed driveway were specially designed and located closer to Timber Lane to minimize the amount of grading/topographical changes and take advantage of natural features of the property. Further, the proposed pool patio will be comprised of pervious surface that will provide sufficient infiltration. The construction of the proposed storm water management measures and erosion control measures will use Best Management and Engineering Practices and not substantially alter the topography of the site; C) The limit of clearing and impact is restricted to the minimum necessary to construct the proposed single-family residence,driveway,and pool as shown on the plan;and D) The construction of the single-family residence and pool has been reviewed by the Town's outside consultant and Town Planner and determined that there will be no degradation to the quality or quantity of water in or entering the isolated vegetated wetland or Lake Cochichewick. 2 15 Timber Lane,Map 64,Parcel 38. Watershed Special Permit—Construction of Single-Family Residence and Pool August 21,2007 E) The construction will have diminutive impact in the Non-Disturbance buffer zone as it includes the replacement of the existing single-family residential structure foundation with a similar footprint for the proposed pool. 2) There is no reasonable alternative location outside the Non-Discharge and Non-Disturbance Zones for any discharge, structure or activity. In accordance with Section 10.31 of the North Andover Zoning Bylaw, the Planning Board makes the following FINDINGS OF FACT: 1) The specific site is an appropriate location for the proposed use as all feasible storm water and erosion controls have been placed on the site; 2) The use will not adversely affect the neighborhood as the lot is located in a Residential 1 Zoning District; 3) There will be no nuisance or serious hazard to vehicles or pedestrians; 4) Adequate and appropriate facilities are provided for the proper operation of the proposed use; 5) The existing lot conforms to the minimum lot area requirements for a lot within the Residential 1 Zoning District as shown in Table 2 of the North Andover Zoning By-laws. 6) The Planning Board also makes a specific fmding that the use is in harmony with the general purpose and intent of the North Andover Zoning Bylaw. Upon reaching the above findings,the Planning Board approves this Special Permit based upon the following SPECIAL CONDITIONS: 1)Permit Definitions: A) The"Locus"refers to the 64,495 sq. ft. parcel of land with land fronting on Timber Lane as shown on Assessors Map 64,Parcel 38, and also known as 15 Timber Lane,North Andover, Massachusetts. B) The"Plans"refer to the plans prepared by Cammett Engineering dated March 20,2007,revised July,27, 2007 entitled"Watershed District Special Permit Plan, Single Family Dwelling, 15 Timber Lane,North Andover,Essex County"and consisting of sheet 1 of 1. C) The"Project or"15 Timber Lane"refers to the razing of the existing single-family dwelling and construct a new 9,600 s.£ single-family residential dwelling,attached garage and deck,29 ft.x 60 ft. pool, installation of underground utilities, grading work, and other improvement shown on the"Plans"as defined above. D) The"Applicant refers to H.David&Allyson Fournier,15 Timber Lane,North Andover,MA 01845, the applicant for the Special Permit. E) The"Project Owner"refers to the person or entity holding the fee interest to the title to the Locus from time to time,which can include but is not limited to the applicant,developer,and owner. 3 ' 15 Timber Lane,Map 64,Parcel 38. Watershed Special Permit—Construction of Single-Family Residence and Pool August 21,2007 2) The Town Planner shall approve any changes made to these plans. Any changes deemed substantial by the Town Planner would require a public hearing and modification by the Planning Board. . 3) Prior to issuance of a building permit: A) A performance guarantee bond of three thousand dollars($3,000.00)made out to the Town of North Andover must be posted to insure that the construction,erosion control,measures,and performance of any other condition contained herein will take place in accordance with the plans and the conditions of this decision and to ensure that the as-built plans will be submitted. B) All erosion control measures as shown on the plan must be in place and reviewed by the Town Planner and Conservation Department. Weekly inspections of all erosion control measures will be completed by the designated independent Environmental Monitor and incorporated into the weekly reports as part of the approved July 17,2007 Watershed Special Permit for the project. C) No pesticides,fertilizers or chemicals shall be used in lawn care or maintenance. The applicant shall incorporate this condition as a deed restriction and a copy of the recorded deed shall be submitted to the Town Planner and included in the file. 4) Prior to release of the Performance Bond: A) The applicant shall submit an as-built plan stamped by a Registered Professional Engineer in Massachusetts that shows all construction, including storm water mitigation trenches and other pertinent site features. This as-built plan shall be submitted to the Town Planner for approval. The applicant must submit a certification from the design engineer that the site was constructed as shown on the approved plan. B) The Planning Board must by a majority vote make a finding that the site is in conformance with the approved plan. 5) In no instance shall the applicant's proposed construction be allowed to further impact the site other than as proposed on the plan referenced in Condition#10. 6) No open burning shall be done except as is permitted during burning season under the Fire Department regulations. 7) The Contractor shall contact Dig Safe at least 72 hours prior to commencing excavation. 8) The provisions of this conditional approval shall apply to and be binding upon the applicant, its employees and all successors and assigns in interest or control. 9) This Special Permit approval shall be deemed to have lapsed August 21, 2009 (two years from the date of issuance) exclusive of the time required to pursue or await determination of any appeals, unless substantial use or construction has commenced within said two-year period. Substantial use or construction will be determined by a majority vote of the Planning Board. 10) This decision must be filed with the North Essex Registry of Deeds. The following information is included as part of this decision: A) Plan titled: Watershed District Special Permit Plan Single Family Dwelling, 15 Timber Lane, North Andover,Essex County Prepared for: H.David&Allyson Fournier 4 15 Timber Lane,Map 64,Parcel 38. Watershed Special Permit—Construction of Single-Family Residence and Pool August 21,2007 t I";r iv E 0 15 Timber Lane,North Andover,MA 01845 , Prepared by: Cammett Engineering 2601 AUG 21 297 Elm Street Amesbury,MA `_+ w}s, Scale: 1"=20' � P", .,o Date: March 30,2007,Revised July 27,2007 ` } Sheets: 1 of 1 B) Report titled: Stormwater Analysis Prepared for: H.David&Allyson Fournier 15 Timber Lane,North Andover,MA 01845 Prepared by: Cammett Engineering 297 Elm Street Amesbury,MA Date: March 2007 cc: Director of Public Works Building Inspector Town Manager Conservation Administrator Planning Board Police Chief Fire Chief Applicant Engineer File 5 . f `CEIC EO Yt T Town of North Andover Planning Board Application for Watershed Special Permit Please type or print clean . 1. Petitioner: H.David&Allyson Fournier Petitioner's Address: 15 Timber Lane,North An MA 01845 Telephone number: (978)683-2771 H.David Fournier 2. Owners of the Land: Address: 15 Timber Lane,North Andover,MA 01845 Number of years of ownershi 17 3. Year lot was created: 1963 - 4. Is the lot currently on septic or sewer? Sewer If on sewer,please provide date the sewer connection was completed: un own 5. Desai tion of Pro used Pro'ect: Replacement of existing single-family house and associated site development and accessor structures. lot with existing single-family house and 6. Description of Premises: L��=VMMIMMM associated im rovements and necessar structures. 7. Address of Propertj Being Affected 15 Timber Lane,North Andover,MA 01845 Zoning District; _ _ Assessors: Map: 64 Lot# _ Registry of Deeds: Book#: . Page#: _ S. Existing Lot: 64,495 <35' Lot Area(Sq.Ft) BuildingHeight Street Frontage: 461.12' Side Setbacks: 151' Front Setback: WON Rear Setback: 64' _ Floor Area Ratio: Lot Coverage: 9. Proposed Lot(if applicable): Lot Area(Sq.Ft) E:4.495_,,,,, Building HeiggN,A, 5' Street Frontage: 4 1,1 ' Side Setbacks: Front Setback: 2.4' Rear Setback: _... _ Floor Area Ratio: b/A Lot Coverage: __ _ 10. Required Lot(as required by Zonin►B law): Lot Area(Sq.Ft) 87120 Building Height <35' Street Frontage: Side Setbacks: Front Setback: Rear Setback: __ Floor Area Ratio: N/A Lot Coverage: N/A 11. Existing Building(if appli „g):,,,., ...� , Ground Floor(Sq.Ft.) 2153 #of Floors: 2. Total Sq.Ft. 1 Height: < _ Use: In e- ,ami es en is Type of Construction _oocLFra . 12. Proposed Building:Ground Floor(Sq.Ft.) 4800 #of Floors: _2;;� ,.� „ Total Sq.Ft. 9600 Height: willow NO Use: — e en is Type of Construction ra 13. Has there ,nrevigil plication for a Special Permit from the Plannigg jUgaWPlan ' ,qr thUg premises.I Yes � i —j If so,when and for what type of construction? Se _t.,2004", * Watershed Special Permit wirnaraven W fi.1�ii u'L rr"e3u ice 14. Section of Zonin B law that S ecial Permit Is Being Re ue ted c ._ 15. Petitioner and Landowner signature(s): Every application for a Special Permit shall be made on this form which is the official form of the Planning Board. Every application shall be filed with the Town Clerk's office. It shall be the responsibility of the petitioner to furnish all supporting documentation with this application. The dated copy of this application received by the Town Clerk or Planning Office does not absolve the applicant from this responsibility. The petitioner shall be responsible for all expenses for filing and legal notification. 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 B oard of this application as incomplete. Petitioner's Signature: V1aS e4 Print or type name here: .t Owner's Signature: t%t;S 1g Print or type name here: t 16. Please list title of plans and documents you will be attaching to this application. 1. Stormwater Analysis Report dated March 2007. 2. Watershed District Special Permit Plan dated March 20, 2007. r Stormwater Analysis Prepared For: N. David Fournier 15 Timber Lane - North Andover, MA W.G. Cammett Engineering, Inc. 297 Elm Street - Amesbury, MA Date: March 2007 OF FRED V. 4 FORD art, CIVIL No.35453 Q �.c�FG�STE 6 TABLE OF CONTENTS Site Description page 3 Project Description page 4 Design Objectives/Methodology page 5 Results page 6 Summary Page 6 LIST OF FIGURES Figure 1 Locus Figure 2 Pre Development Drainage Zones Figure 3 Post Development Drainage Zones ATTACHMENTS Projections of Downgradient Chemical Concentrations page 1-3 W.C. Cammett Engineering, Inc. 2 M:Iwinword120061061o6lStormwaterAnalysis and ManagementlStormwaterAnalysis SITE DESCRIPTION GENERAL The 1.48± acre project site (Site) is located at 15 Timber Lane in North Andover, Massachusetts. An existing single family dwelling is currently on the property. It is situated in the Residence 1 Zoning District. See Figure 1, (Locus Map) for a more detailed description of the project location. Slopes on the Site range from 0 to 33%. Vegetation on the Site consists of lawn areas while the eastern portion of the property is primarily wooded with a variety of deciduous trees. Soils on the Site are comprised of Sutton (SuB), an moderately well drained, very stony, fine sandy loam,hydrologic group B. Bordering Vegetated Wetlands (BVW) are present throughout the site along the northern property line. See Figure 2, (Pre-Development Drainage Zones) and the site plans for a more detailed description of topography and soil conditions. PRE-DEVELOPMENT DRAINAGE CONDITIONS The site consists of two subcatchment areas. 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"Pi'1� .-� /:r l,' 1 7, t� ` 1 ,S� g �" I / ��• / �. t t , t I � ,.X___ •,�,-,,, t r f- f•{�j /':�i >, Q,• .•\ 4{ .`, t( r J ;�' .."'•"fix' � i �! ,� I !f/ r '�' ! 1 �� r ,.,/ t, .. 1. /_ .i r =.-i:3 r1 't�} {t �.? ,�,` 1_�l'� ��L 1 -.-✓ %/"��,�''\f: e a ` ! ' r•./I;t (D N t`� .[ t � ��f�l�r/(rJt� -` f I, 11 1 1 . . d t, ✓ ti 1 t �',,\ n�j!'I+ �� �_ �,�� +'}{;'•k/4 t`\{.L-.�.'3�)� IK'E J1���.�,5 �� 1, i' �1 ...�'.7 �l � 1�� � fly � �-..� � '' � ri�' i�\ S+i � � c� 9 �I� ��. !,1 ,�t}1 `�������� 1P1� '�'�.f} I �t��} .,�_ _-s y •'��*! �,f„ � �,y�t � I �\��n Z C) J MI r, I �_ 1' { �+ 4�._;.[n .������.�-���i�.r'F^-s�'_I-`�I; .a-- 1'''�':;;.x-•�, .y"�. ^__L4` t � ��....-�-' �• �—-� .. -y"� t "v - f PROJECT DESCRIPTION GENERAL The proposed project is to demolish the existing single family dwelling and construct a new dwelling and pool. See Figure 3, (Post-Development Drainage Zones) and site plans for a more detailed description of the proposed development. STORMWATER MANAGEMENT SYSTEM The proposed rooftop infiltration system was designed to accommodate runoff volumes resulting from a 2 year design storm. The infiltration system consists of 20 SC-310 Stormtech plastic chambers. The proposed dwelling's roof drain system is tied into the infiltration chambers with 6" & 4" PVC pipe. The roof drain systems have an overflow outlet for larger storm events. See the accompanying design plans and appendicies for a more detailed description of the infiltration chamber location and construction. POST-DEVELOPMENT DRAINAGE CONDITIONS Drainage patterns resulting ftom the proposed development are delineated on(Figure 3,Post- Development Drainage Zones). The site consists of five,post-developed subcatchment areas. Subcatchment-1 represents the bypass which flows towards the northerly property line. Subcatchment-2 represents bypass flow to a proposed 12" PVC culvert. Subcatchment-3 represents flow to the easterly property line. Subcatchment-4 & 5 represent roof area and pool area runoff. See Figure 3, (Post-Development Drainage Zones) and the calculation data in Appendix A for a detailed description of subcatchment data. W.C. Cammett Engineering, Inc. 4 M:Iwinwordl2006106?O6lstormwaterAnalysis and ManagementlStormwater Analysis i 1 DESIGN OBJECTIVES / METHODOLOGY STORMWATER MANAGEMENT SYSTEM The drainage system was designed to accommodate runoff resulting from a 2, 10, and 100 year frequency design storms. The general drainage patterns of the Site will remain essentially unaltered; the majority of the runoff will flow to the existing wetlands, as it does under existing conditions. RUNOFF QUANTIFICATION A drainage analysis was performed using pre- and post-development site criteria to estimate the effects of the proposed development on stormwater runoff conditions. Stormwater runoff rates were calculated for the 2, 10, and 100 year design storm events. The analysis was performed using HydroCAD TM, a computerized stormwater modeling system that combines SCS hydrology techniques with standard hydraulic equations. A minimum time of concentration (Tc) of 10 minutes was incorporated into the calculations to account for storm fluctuation and depression storage. A percolation rate of 10 min/in was utilized based on soil test results conducted within the area of the proposed infiltration area. Storage information is based on data provided by the manufacturer. The void volume within stone surrounding the proposed chambers was assumed to be 40%. The exfiltration rate was applied to the chambers over the surface area. Total site runoff figures were obtained by summing hydrographs and not by direct addition of peak flows from individual subcatchments. Since peak flows from the individual subcatchments occur at different times,the total runoff figure listed may not equal the sum of the individual peak flows from the various subcatchments. This method provides a more realistic total flow figure than that obtained by direct addition of peak flows. W.C. Cammett Engineering,Inc. 5 M:lwinword120061061061Stormwater Analysis and Managementlstormwater Analysis RESULTS STORMWATER RUNOFF COMPARISON The following tables summarize hydrologic and hydraulic conditions resulting from pre- and post- development peak storm water runoff. Table 3: Comparison Point Peak Runoff- 2 Year Storm Site Condition Pre-Development Post-Development Parameter (cfs) cfs) Reach-100 0.38 0.25 Reach-200 0.39 0.31 Table 4: Comparison Point Peak Runoff- 10 Year Storm Site Condition Pre-Development Post-Development Parameter (cfs) (cfs) Reach-100 0.95 0.75 Reach-200 1.23 0.98 Table 5: Comparison Point Peak Runoff- 100 Year Storm Site Condition Pre-Development Post-Development Parameter (cfs) WS) Reach-100 1.86 1.58 Reach-200 2.65 2.21 SUMMARY Existing stormwater runoff drainage patterns will remain essentially unchanged under post- development conditions. Stormwater flows for the 2, 10, and 100 year storm events will be reduced in the proposed conditions because of the use of infiltration methods. In addition, based on the proposed development plan and associated calculations prepared for this project, it is our opinion that there will be not be any significant degradation of the quality or quantity of water entering Lake Cochichewick. W.C. Cammett Engineering,Inc. 6 M:Iwinword120061061061Stormwater Analysis and Managementmormwater Analysis J ® / r ®a S! A40r r � J Ar t / r ` 1 1041 � to ✓ , 0 to r � � Nt X! _ I � t �a / r J _ r. W SCALE. 1 =407 40 20 0 40 e0 120 FEET 10 5 0 10 20 30 METERS CAMME=--r-r FIGURE 3- — Post—development Drainage Zones 2006 0610s DwG06106SP.DW DMOY. L. THIBODEAU H . DAVID FOU Rp NIER CHKBY F.FRDODEAU DATE. 3/20107 JOB NO.: 06106 IV M I ITB EMFtI IV M 15 Timber Lane, North Andover, Ma. SHEET 2 OF 2 � - o SY t MCQma WE C 0 YAP 64 PARCEL 2 ~� >t 'OV ter , aa� I m m p� IUXLL•4co lee 4v N i AFFAWL A011 E70SAIC o t SU w LAIN .ti , > \� ree / \ \i 1 !w u Li � ) O 98 �1\\ '�-�.. ' u., p .. – 4 m Z_ `J 9O"kAPt \ 5 �iSA 2S E2 XQ"tib) 1 20 4 f =52t8 Rictgl \ ifl"MAPir ` l Ff Pa ".da laR ei 23 N9 psA1Re 701E ` \ \ \\ i \ 4 0 U k SOS AS; I 1 t � \ 1 `• \ � �i '1 #��.0 j� t t8` 4nF'V.E �P. / \ ' •p \ \ \ \ t t •-^' �y \ m \ 1 O"OAK tYf of SO'MO BUOC 701E '21-U. \ 24" i\t , \����\ t // L;�i a I \ \ l�MNe \\ 0000 OOOt3C3 > , , J E `t y rat OAK j \� a\ O O b 0 O \ \ i110 > r� f Qb bOO \ La.l � 0r'\ — �\ ' �� o b O Ems': 00 ,> i t t7► a{4� p� M \ OU04 0 O t3 f \ \ t \> O ry �Q�1 ', lot/IMNI• 00 b — �24"1 OAK --I ' 1 4k►, 4, `\424 -`- \ 24"C1RK _~` 2K KI +� ,♦♦\ dy \ sc,:g.`.,_ / 22"Odd! \\1\ j, /J/ t\ j -- - 1�j'r ,'p ,,(,'� !r.•'' 61 S. i '^.,,, / `\ a \� / \7j / ice.... / s' cx LL 1V 182 40 0 �-,4rg - I L\SA) 4F -A �♦�`� _ � ' t \� 0Ev les lei all +a5\ J NLJLJ Q NA s KA7MEEN E ERCOM i i MAP 104C PARCEL 85 IBM HYO: t 9ifi g f — eamu BOLT w/MAIol r t r 1 / s "Ab P:3 _ 1 Flow towards northerly lot line 100 Northern Summary Flow towards easterly lot line 200 Eastern Summary SubCat Reach on LICik; Drainage Diagram for Existing Conditions Prepared by Cammett Engineering 4/26/2007 HydroGAD®7.00 s/n 000684 01986-2003 Applied Microcomputer Systems Existing Conditions Type ///24-hr 2 Yr. Storm Rainfall=3.10" Prepared by Cammett Engineering Page 2 HydroCADO 7.00 s/n 000684 © 1986-2003 Applied Microcomputer Systems 4/26/2007 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1: Flow towards northerly lot line Runoff Area=0.610 ac Runoff Depth=0.65" Tc=10.0 min CN=69 Runoff=0.38 cfs 0.033 of Subcatchment 2: Flow towards easterly lot line Runoff Area=1.050 ac Runoff Depth=0.45" Tc=10.0 min CN=64 Runoff--0.39 cfs 0.040 of Reach 100: Northern Summary Peak Depth=0.01' Max Vet=2.7 fps Inflow--0.38 cfs 0.033 of n=0.011 L=10.0' S=0.10007 Capacity=378.30 cfs Outflow=0.38 cfs 0.033 of Reach 200: Eastern Summary Peak Depth=0.01' Max Vel=2.7 fps Inflow=0.39 cfs 0.040 of n=0.011 L=10.0' S=0.1000'P Capacity=378.30 cfs Outflow=0.39 cfs 0.040 of Total Runoff Area = 1.660 ac Runoff Volume = 0.073 of Average Runoff Depth = 0.52" Existing Conditions Type 111 24-hr 2 Yr. Storm Rainfall=3.10" Prepared by Cammett Engineering Page 3 HydroCADO 7.00 s/n 000684 ©1986-2003 Applied Microcomputer Systems 4/26/2007 Subcatchment 1: Flow towards northerly lot line Runoff = 0.38 cfs @ 12.16 hrs, Volume= 0.033 af, Depth= 0.65" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type III 24-hr 2 Yr. Storm Rainfall=3.10" Area (ac) CN Description 0.140 98 Paved parking & roofs 0.430 61 >75% Grass cover, Good, NSG B 0.040 55 Woods, Good, HSG B 0.610 69 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 2: Flow towards easterly lot line Runoff = 0.39 cfs @ 12.18 hrs, Volume= 0.040 af, Depth= 0.45" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type III 24-hr 2 Yr. Storm Rainfall=3.10" Area (ac) CN Description 0.150 98 Paved parking & roofs 0.460 61 >75% Grass cover, Good, HSG B 0.440 55 Woods, Good, HSG B 1.050 64 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Reach 100: Northern Summary Inflow Area = 0.610 ac, Inflow Depth = 0.65" for 2 Yr. Storm event Inflow = 0.38 cfs @ 12.16 hrs, Volume= 0.033 of Outflow = 0.38 cfs @ 12.17 hrs, Volume= 0.033 af, Atten= 0%, Lag= 0.1 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Max. Velocity= 2.7 fps, Min. Travel Time= 0.1 min Avg. Velocity = 2.0 fps, Avg. Travel Time= 0.1 min Peak Depth= 0.01' @ 12.16 hrs Capacity at bank full= 378.30 cfs 10.00' x 1.00' deep channel, n= 0.011 Length= 10.0' Slope= 0.1000 'P Existing Conditions Type ///24-hr 2 Yr. Storm Rainfall=3.10" Prepared by Cammett Engineering Page 4 HydroCAD®7 00 s/n 000684 © 1986-2003 Applied Microcomputer Systems 4/26/2007 Reach 200: Eastern Summary Inflow Area = 1.050 ac, Inflow Depth = 0.45" for 2 Yr. Storm event Inflow = 0.39 cfs @ 12.18 hrs, Volume= 0.040 of Outflow = 0.39 cfs @ 12.19 hrs, Volume= 0.040 af, Atten= 0%, Lag= 0.2 min Routing by Stor-Ind+Trans method,Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Max. Velocity= 2.7 fps, Min. Travel Time= 0.1 min Avg. Velocity = 2.0 fps, Avg. Travel Time= 0.1 min Peak Depth= 0.01' @ 12.18 hrs Capacity at bank full= 378.30 cfs 10.00' x 1.00' deep channel, n= 0.011 Length= 10.0' Slope= 0-1000 ? Existing Conditions Type Ill 24-hr 10 Yr. Storm Rainfall=4.50" Prepared by Cammett Engineering Page 5 HydroCADO 7.00 s/n 000684 Q 1986-2003 Applied Microcomputer Systems 4/26/2007 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1: Flow towards northerly lot line Runoff Area=0.610 ac Runoff Depth=1.46" Tc=10.0 min CN=69 Runoff=0.95 cfs 0.074 of Subcatchment 2: Flow towards easterly lot line Runoff Area=1.050 ac Runoff Depth=1.14" Tc=10.0 min CN=64 Runoff=1.23 cfs 0.100 of Reach 100: Northern Summary Peak Depth=0.03' Max Vel=3.8 fps Inflow--0.95 cfs 0.074 of n=0.011 L=10.0' S=0.1000 '/' Capacity=378.30 cfs Outflow=0.95 cfs 0.074 of Reach 200: Eastern Summary Peak Depth=0.03' Max Vel=4.1 fps Inflow=1.23 cfs 0.100 of n=0.011 L=10.0' S=0.1000'/' Capacity=378.30 cfs Outflow=1.23 cfs 0.100 of Total Runoff Area = 1.660 ac Runoff Volume =0.175 of Average Runoff Depth = 1.26" Existing Conditions Type 111 24-hr 10 Yr. Storm Rainfall=4.50" Prepared by Cammett Engineering Page 6 HydroCADO 7.00 s/n 000684 @ 1986-2003 Applied Microcomputer Systems 4/26/2007 Subcatchment 1: Flow towards northerly lot line Runoff = 0.95 cfs @ 12.15 hrs, Volume= 0.074 af, Depth= 1.46" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type III 24-hr 10 Yr. Storm Rainfall=4.50" Area (ac) CN Description - 0.140 98 Paved parking & roofs 0.430 61 >75% Grass cover, Good, HSG B 0.040 55 Woods Good, HSG B 0.610 69 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) - - 10.0 Direct Entry, Subcatchment 2: Flow towards easterly lot line Runoff = 1.23 cfs @ 12.16 hrs, Volume= 0.100 af, Depth= 1.14" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt=0.05 hrs Type Ili 24-hr 10 Yr. Storm Rainfall=4.50" Area ac CN Description 0.150 98 Paved parking & roofs 0.460 61 >75% Grass cover, Good, HSG B 0.440 55 Woods, Good, HSG B 1.050 64 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Reach 100: Northern Summary Inflow Area = 0.610 ac, Inflow Depth = 1.46" for 10 Yr. Storm event Inflow = 0.95 cfs @ 12.15 hrs, Volume= 0.074 of Outflow = 0.95 cfs @ 12.15 hrs, Volume= 0.074 af, Atten= 0%, Lag= 0.1 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Max. Velocity= 3.8 fps, Min. Travel Time= 0.0 min Avg. Velocity = 2.1 fps, Avg. Travel Time= 0.1 min Peak Depth= 0.03' @ 12.15 hrs Capacity at bank full= 378.30 cfs 10.00' x 1.00' deep channel, n= 0.011 Length= 10.0' Slope= 0.10007 Existing Conditions Type llf 24-hr 10 Yr. Sfonr► Rainfafl=4.50" Prepared by Cammett Engineering Page 7 HydroCAn@ 7.00 s/n 000684 ©1986-2003 Applied Microcomputer Systems 4/26/2007 Reach 200: Eastern Summary Inflow Area = 1.050 ac, Inflow Depth = 1.14" for 10 Yr. Storm event Inflow = 1.23 cfs @ 12.16 hrs, Volume= 0.100 of Outflow = 1.23 cfs @ 12.16 hrs, Volume= 0.100 af, Atten= 0%, Lag= 0.1 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Max. Velocity= 4.1 fps, Min. Travel Time= 0.0 min Avg. Velocity = 2.1 fps, Avg. Travel Time= 0.1 min Peak Depth= 0.03' @ 12.16 hrs Capacity at bank full= 378.30 cfs 10.00' x 1.00' deep channel, n= 0.011 Length= 10.0' Slope= 0.1000 T Existing Conditions Type ll/ 24-hr 100 Yr. Storm Rainfall=6.40" Prepared by Cammett Engineering Page 8 HydroCAD®7 00 s/n 000684 ©1986-2003 Applied Microcomputer Systems 4/26/2007 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1: Flow towards northerly lot line Runoff Area=0.610 ac Runoff Depth=2.80" Tc=10.0 min CN=69 Runoff--1.86 cfs 0.142 of Subcatchment 2: Flow towards easterly lot line Runoff Area=1.050 ac Runoff Depth=2.34" Tc=10.0 min CN=64 Runoff=2.66 cfs 0.205 of Reach 100: Northern Summary Peak Depth=0.04' Max Vel=4.9 fps Inflow=1.86 cfs 0.142 of n=0.011 L=10.0' S=0.1000'/' Capacity=378.30 cfs Outflow=1.86 cfs 0.142 of Reach 200: Eastern Summary Peak Depth=0.05' Max Vel=5.6 fps Inflow=2.66 cfs 0.205 of n=0.011 L=10.0' S=0.1000 '/' Capacity=378.30 cfs Outflow=2.65 cfs 0.205 of Total Runoff Area = 1.660 ac Runoff Volume = 0.348 of Average Runoff Depth =2.51" Existing Conditions Type Ill 24-hr 100 Yr. Storm Rainfall=6.40" Prepared by Cammett Engineering Page 9 HydroCAD®7 00 sin 000684 © 1986-2003 Applied Microcomputer Systems — 4/26/2007 Subcatchment 1: Flow towards northerly lot line Runoff = 1.86 cfs @ 12.15 hrs, Volume= 0.142 af, Depth= 2.80" Runoff by SCS TR-20 method, UH=SCSjime Span= 5.00-20.00 hrs, dt= 0.05 hrs Type III 24-hr 100 Yr. Storm Rainfall=6.40" Area ac CN Description 0.140 98 Paved parking & roofs 0.430 61 >75% Grass cover, Good, HSG B 0.040 55 Woods, Good, HSG B 0.610 69 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) Direct Entry, 10.0 Subcatchment 2: Flow towards easterly lot line Runoff = 2.66 cfs @ 12.15 hrs, Volume= 0.205 af, Depth= 2.34" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type III 24-hr 100 Yr. Storm Rainfall=6.40" Area ac CN Description 0.150 98 Paved parking & roofs 0.460 61 >75% Grass cover, Good, HSG B 0.440 55 Woods, Good, HSG B 1.050 64 Weighted Average Tc Length Slope Velocity Capacity Description min feet) (fttft) (ft/sec cfs 10.0 Direct Entry, Reach 100: Northern Summary Inflow Area = 0.610 ac, Inflow Depth = 2.80" for 100 Yr. Storm event 12.15 hrs Inflow 1.86 cfs @ , Volume= 0.142 of Outflow = 1.86 cfs @ 12.15 hrs, Volume= 0.142 af, Atten= 0%, Lag= 0.1 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Max. Velocity= 4.9 fps, Min. Travel Time= 0.0 min Avg. Velocity = 2.1 fps, Avg. Travel Time= 0.1 min Peak Depth= 0.04' @ 12.15 hrs Capacity at bank full= 378.30 cfs 10.00' x 1.00' deep channel, n= 0.011 Length= 10.0' Slope= 0.1000 'P Existing Conditions Type /// 24-hr 100 Yr. Storm Rainfall=6.40" Prepared by Cammett Engineering Page 10 HydroCADO 7.00 s/n 000684 ©1986-2003 Applied Microcomputer Systems 4/26/2007 Reach 200: Eastern Summary Inflow Area = 1.050 ac, Inflow Depth = 2.34" for 100 Yr. Storm event Inflow = 2.66 cfs @ 12.15 hrs, Volume= 0.205 of Outflow = 2.65 cfs @ 12.15 hrs, Volume 0.205 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Max. Velocity= 5.6 fps, Min. Travel Time= 0.0 min Avg. Velocity = 2.2 fps, Avg. Travel Time= 0.1 min Peak Depth= 0.05' @ 12.15 hrs Capacity at bank full= 378.30 cfs 10.00' x 1.00' deep channel, n= 0.011 Length= 10.0' Slope= 0.1000 'r 100 1 Northern Summary Flow towards northerly 3 lot line S Flow to eastern lot It - Pool & patio 4P 200 Pool _,,��Easj rn Summary 4, t N F Roof Area Rooftop Infiltrator (20-SC 310) 2P 12" culvert 2: Flow towards culvert Subcat Reach on Llnk Drainage Diagram for Proposed Conditions Prepared by Cammett Engineering 4/26/2007 HydroGAD®7.00 s/n 000684 ©1986-2003 Applied Microcomputer Systems Proposed Conditions Type /// 24-hr 2 Yr. Storm Rainfall=3.10" Prepared by Cammett Engineering Page 2 HydroCADO 7.00 s/n 000684 © 1986-2003 Applied Microcomputer Systems 4/26/2007 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1: Flow towards northerly lot line Runoff Area=0.600 ac Runoff Depth=0.49" Tc=10.0 min CN=65 Runoff=0.25 cfs 0.024 of Subcatchment 2: Flow towards culvert Runoff Area=0.480 ac Runoff Depth=0.74" Tc=10.0 min CN=71 Runoff=0.36 cfs 0.030 of Subcatchment 3: Flow to eastern lot line Runoff Area=0.370 ac Runoff Depth=0.26" Tc=10.0 min CN=58 Runoff=0.05 cfs 0.008 of Subcatchment 4: Roof Area Runoff Area=4,800 sf Runoff Depth=2.68" Tc=10.0 min CN=98 Runoff=0.29 cfs 0.025 of Subcatchment 5S: Pool & patio Runoff Area=0.100 ac Runoff Depth=2.68" Tc=0.0 min CN=98 Runoff--0.34 cfs 0.022 of Reach 100: Northern Summary Peak Depth=0.01' Max Vel=22 fps Inflow--0.25 cfs 0.024 of n=0.011 L=10.0' S=0.1000? Capacity=378.30 cfs Outflow=0.25 cfs 0.024 of Reach 200: Eastern Summary Peak Depth=0.01' Max Vel=2.5 fps Inflow--0.31 cfs 0.042 of n=0.011 L=10.0' S=0.1000'!' Capacity=378.30 cfs Outflow=0.31 cfs 0.042 of Pond 2P: 12" culvert Peak Elev=179.97' Storage=199 cf Inflow=0.36 cfs 0.030 of 12.0"x 65.0' Culvert Outflow=0.26 cfs 0.029 of Pond 4P: Pool Peak Elev=185.60' Storage=755 cf Inflow=0.34 cfs 0.022 of Outflow=0.02 cfs 0.005 of Pond INF: Rooftop Infiltrator(20-SC 310) Peak Elev=181.62' Storage=259 cf Inflow--0.29 cfs 0.025 of Discarded=0.07 cfs 0.025 of Primary=0.00 cfs 0.000 of Outflow--0.07 cfs 0.025 of Total Runoff Area = 1.660 ac Runoff Volume = 0.109 of Average Runoff Depth = 0.79" Proposed Conditions Type /1124-hr 2 Yr. Storm Rainfall=3.10" Prepared by Cammett Engineering Page 3 HydroCADO 7.00 s/n 000684 ©1986-2003 Applied Microcomputer Systems 4/26/2007 Subcatchment 1: Flow towards northerly lot line Runoff = 0.25 cfs @ 12.17 hrs, Volume= 0.024 af, Depth= 0.49" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type III 24-hr 2 Yr. Storm Rainfall=3.10" _ Area (ac) CN Description 0.070 98 Paved parking & roofs 0.490 61 >75% Grass cover, Good, HSG B 0.040 55 Woods, Good, HSG B 0.600 65 Weighted Average Tc Length Slope Velocity Capacity Description _ (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 2: Flow towards culvert Runoff = 0.36 cfs @ 12.16 hrs, Volume= 0.030 af, Depth= 0.74" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type Ili 24-hr 2 Yr. Storm Rainfall=3.10" Area (ac) CN Description 0.130 98 Paved parking & roofs 0.320 61 >75% Grass cover, Good, HSG B 0.030 55 Woods, Good, HSG B 0.480 71 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 3: Flow to eastern lot line Runoff = 0.05 cfs @ 12.34 hrs, Volume= 0.008 af, Depth 0.26" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type III 24-hr 2 Yr. Storm Rainfall=3.10" _ Area (ac) CN Description 0.190 61 >75% Grass cover, Good, HSG B 0.180 55 Woods, Good, HSG B 0.370 58 Weighted Average Proposed Conditions Type /Il 24-hr 2 Yr. Storm Rainfall=3.10" Prepared by Cammett Engineering Page 4 HydroCAD®7 00 s/n 000684 © 1986-2003 Applied Microcomputer Systems 4/26/2007 Tc Length Slope Velocity Capacity Description _ sec (min) (feet) (ft/ft) (ft/sec) (cfs 10.0 Direct Entry, Subcatchment 4: Roof Area Runoff = 0.29 cfs @ 12.14 hrs, Volume= 0.025 af, Depth= 2.68" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type III 24-hr 2 Yr. Storm Rainfall=3.10" Area (sf) CN Description - 4,800 98 Roof Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 5S: Pool & patio Runoff = 0.34 cfs @ 12.00 hrs, Volume= 0.022 af, Depth= 2.68" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type III 24-hr 2 Yr. Storm Rainfall=3.10" Area (ac) CN Description -- 0.100 98 Paved parking & roofs Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 0.0 Direct Entry, Reach 100: Northern Summary Inflow Area = 0.600 ac, Inflow Depth = 0.49" for 2 Yr. Storm event Inflow = 0.25 cfs @ 12.17 hrs, Volume= 0.024 of Outflow = 0.25 cfs @ 12.17 hrs, Volume= 0.024 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Max. Velocity= 2.2 fps, Min. Travel Time= 0.1 min Avg. Velocity = 2.0 fps, Avg. Travel Time= 0.1 min Peak Depth= 0.01' @ 12.17 hrs Capacity at bank full= 378.30 cfs 10.00' x 1.00' deep channel, n= 0.011 Length= 10.0' Slope= 0.10007 Proposed Conditions Type 111 24-hr 2 Yr. Storm Rainfall=3.10" Prepared by Cammett Engineering Page 5 HydroCAD®7.00 s/n 000684 © 1986-2003 Applied Microcomputer Systems 4/26/2007 Reach 200: Eastern Summary Inflow Area = 1.060 ac, Inflow Depth = 0.47" for 2 Yr. Storm event Inflow = 0.31 cfs @ 12.31 hrs, Volume= 0.042 of Outflow = 0.31 cfs @ 12.31 hrs, Volume= 0.042 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Max. Velocity= 2.5 fps, Min. Travel Time= 0.1 min Avg. Velocity = 2.0 fps, Avg. Travel Time= 0.1 min Peak Depth= 0.01' @ 12.31 hrs Capacity at bank full= 378.30 cfs 10.00' x 1.00' deep channel, n= 0.011 Length= 10.0' Slope= 0.1000 7' Pond 2P: 12" culvert Inflow Area = 0.480 ac, Inflow Depth = 0.74" for 2 Yr. Storm event Inflow = 0.36 cfs @ 12.16 hrs, Volume= 0.030 of Outflow = 0.26 cfs @ 12.30 hrs, Volume= 0.029 af, Atten= 28%, Lag= 8.6 min Primary = 0.26 cfs @ 12.30 hrs, Volume= 0.029 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 179.97' @ 12.30 hrs Surf.Area= 1,328 sf Storage= 199 Cf Plug-Flow detention time= 26.9 min calculated for 0.029 of(97% of inflow) Center-of-Mass det. time= 15.7 min ( 846.2 - 830.5) # Invert Avail Storage Storage Description 1 179.70' 1,275 cf Custom Stage Data (Prismatic�isted below Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 179.70 0 0 0 180.00 1,500 225 225 180.50 2,700 1,050 1,275 # Routing Invert Outlet Devices 1 Primary 179.70' 12.0" x 65.0' long Culvert CPP, mitered to conform to fill, Ke= 0.700 Outlet Invert= 178.40' S= 0.0200'f n= 0.011 Cc= 0.900 Primary OutFlow Max=0.26 cfs @ 12.30 hrs HW=179.97' (Free Discharge) L1=Culvert (Inlet Controls 0.26 cfs @ 1.5 fps) Pond 4P: Pooh Inflow Area = 0.100 ac, Inflow Depth = 2.68" for 2 Yr. Storm event Inflow = 0.34 cfs @ 12.00 hrs, Volume= 0.022 of Outflow = 0.02 cfs @ 13.36 hrs, Volume= 0.005 af, Atten= 94%, Lag= 81.8 min Primary = 0.02 cfs @ 13.36 hrs, Volume= 0.005 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Proposed Conditions Type l/l 24-hr 2 Yr. Storm Rainfall=3.10" Prepared by Cammett Engineering Page 6 HydroCADO 7.00 s/n 000684 © 1986-2003 Applied Microcomputer Systems 4/26/2007 Peak Elev= 185.60' @ 13.36 hrs Surf.Area= 1,534 sf Storage= 755 cf Plug-Flow detention time= 378.0 min calculated for 0.005 of (23% of inflow) Center-of-Mass det. time= 201.8 min ( 936.1 - 734.4 ) # Invert Avail Storage Storage Description 1 185.10' 975 cf Custom Stage Data (Prismatic�fisted below Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 185.10 1,500 0 0 185.60 1,500 750 750 185.70 3,000 225 975 # Routing Invert Outlet Devices 1 Primary 185.60' 60.0' long x 5.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.02 cfs @ 13.36 hrs HW=185.60' (Free Discharge) 't1=Broad-Crested Rectangular Weir (Weir Controls 0.02 cfs @ 0.1 fps) Pond INF: Rooftop Infiltrator (20-SC 310) Inflow Area = 0.110 ac, Inflow Depth = 2.68" for 2 Yr. Storm event Inflow = 0.29 cfs @ 12.14 hrs, Volume= 0.025 of Outflow = 0.07 cfs @ 11.80 hrs, Volume= 0.025 af, Atten=77%, Lag= 0.0 min Discarded = 0.07 cfs @ 11.80 hrs, Volume= 0.025 of Primary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 181.62' @ 12.57 hrs Surf.Area=480 sf Storage= 259 cf Plug-Flow detention time= 21.0 min calculated for 0.025 of(100% of inflow) Center-of-Mass det. time= 20.8 min ( 762.6-741.9 ) # Invert Avail.Stora a Storage Description q q -- 1 180.70' 266 cf Custom Stage Data (Prismatic�isted below 960 cf Overall- 295 cf Embedded = 665 cf x 40.0% Voids 2 181.20' 295 cf 28.9"W x 16.0"H x 7.12%StormTech SC-310 x 20 Inside#1 561 cf Total Available Storage Elevation Surf.Area Inc.Store Cum.Store _ (feet) (sq-ft) (cubic-feet) (cubic-feet 180.70 480 0 0 182.70 480 960 960 # Routing Invert Outlet Devices 1 Discarded 0.00' 0.008333 fpm Exfiltration over entire Surface area 2 Primary 181.80' 4.0" x 12.0' long Culvert X 2.00 CPP, projecting, no headwall, Ke= 0.900 Outlet Invert= 181.00' S= 0.0667 'P n= 0.011 Cc= 0.900 Proposed Conditions Type /I/ 24-hr 2 Yr. Storm Rainfall=3.10" Prepared by Cammett Engineering Page 7 HydroCADO 7.00 s/n 000684 © 1986-2003 Applied Microcomputer Systems 4/26/2007 Discarded OutRow Max=0.07 cfs @ 11.80 hrs HW=180.73' (Free Discharge) t— _ Controls 0.07 cfs 1 Exfiltration (Exfiltration C n ) Primary OutFlow Max=0.00 cfs @ 5.00 hrs HW=180.70' (Free Discharge) t-2=Culvert ( Controls 0.00 cfs) I Proposed Conditions Type ///24-hr 10 Yr. Storm Rainfall=4.50" Prepared by Cammett Engineering Page 8 HydroCADO 7.00 s/n 000684 O 1986-2003 Applied Microcomputer Systems 4/26/2007 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1: Flow towards northerly lot line Runoff Area=0.600 ac Runoff Depth=1.21" Tc=10.0 min CN=65 Runoff--0.75 cfs 0.060 of Subcatchment 2: Flow towards culvert Runoff Area=0.480 ac Runoff Depth=1.60" Tc=10.0 min CN=71 Runoff=0.83 cfs 0.064 of Subcatchment 3: Flow to eastern lot line Runoff Area=0.370 ac Runoff Depth=0.81" Tc=10.0 min CN=58 Runoff--0.27 cfs 0.025 of Subcatchment 4: Roof Area Runoff Area=4,800 sf Runoff Depth=3.96" Tc=10.0 min CN=98 Runoff--0.42 cfs 0.036 of Subcatchment SS: Pool & patio Runoff Area=0.100 ac Runoff Depth=3.96" Tc=0.0 min CN=98 Runoff--0.50 cfs 0.033 of Reach 100: Northern Summary Peak Depth=0.02' Max Vel=3.4 fps Inflow--0.75 cfs 0.060 of n=0.011 L=10.0' S=0.1000'/' Capacity=378.30 cfs Outflow=0.75 cfs 0.060 of Reach 200: Eastern Summary Peak Depth=0.03' Max Vel=3.8 fps Inflow=0.98 cfs 0.107 of n=0.011 L=10.0' S=0.10007' Capacity=378.30 cfs Outflow=0.98 cfs 0.107 of Pond 2P: 12" culvert Peak EIev=180.10' Storage=430 cf Inflow=0.83 cfs 0.064 of 120"x 65.0'Culvert Outflow=0.55 cfs 0.063 of Pond 4P: Pool Peak Elev=185.62' Storage=787 cf Inflow=0.50 cfs 0.033 of Outflow--0.30 cfs 0.016 of Pond INF: Rooftop Infiltrator(20-SC 310) Peak EIev=181.99' Storage=387 cf Inflow=0.42 cfs 0.036 of Discarded=0.07 cfs 0.033 of Primary=0.12 cfs 0.003 of Outflow=0.18 cfs 0.036 of Total Runoff Area = 1.660 ac Runoff Volume =0.219 of Average Runoff Depth = 1.58" I, Proposed Conditions Type 111 24-hr 10 Yr. Storm Rainfall=4.50" Prepared by Cammett Engineering Page 9 HydroCAD®7 00 s/n 000684 © 1986-2003 Applied Microcomputer Systems _ 4/26/2007 Subcatchment 1: Flow towards northerly lot line Runoff = 0.75 cfs @ 12.16 hrs, Volume= 0.060 af, Depth= 1.21" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type III 24-hr 10 Yr, Storm Rainfall=4.50" Area (ac) CN Description 0.070 98 Paved parking & roofs 0.490 61 >75% Grass cover, Good, HSG B 0.040 55 Woods, Good, HSG B 0.600 65 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (Wsec) (cfs) 10.0 Direct Entry, Subcatchment 2: Flow towards culvert Runoff = 0.83 cfs @ 12.15 hrs, Volume= 0.064 af, Depth= 1.60" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type III 24-hr 10 Yr. Storm Rainfall=4.50" Area (ac) CN Description 0.130 98 Paved parking & roofs 0.320 61 >75% Grass cover, Good, HSG B 0.030 55 Woods, Good, HSG B 0.480 71 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 3: Flow to eastern lot line Runoff = 0.27 cfs @ 12.17 hrs, Volume= 0.025 af, Depth= 0.81" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type III 24-hr 10 Yr. Storm Rainfall=4.50" Area (ac) CN Description 0.190 61 >75% Grass cover, Good, HSG B 0.180 55 Woods, Good, HSG B 0.370 58 Weighted Average Proposed Conditions Type 111 24-hr 10 Yr. Storm Rainfall=4.50" Prepared by Cammett Engineering Page 10 HydroCADO 7.00 s/n 000684 © 1986-2003 Applied Microcomputer Systems 4/26/2007 Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 4: Roof Area Runoff = 0.42 cfs @ 12.14 hrs, Volume= 0.036 af, Depth= 3.96" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type III 24-hr 10 Yr. Storm Rainfall=4.50" Area (sf) CN Description 4,800 98 Roof Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 5S: Pool & patio Runoff = 0.50 cfs @ 12.00 hrs, Volume= 0.033 af, Depth= 3.96" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type III 24-hr 10 Yr. Storm Rainfall=4.50" Area (ac) CN Description —- 0.100 98 Paved parking & roofs Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) Q.0 Direct Entry, Reach 100: Northern Summary Inflow Area = 0.600 ac, Inflow Depth = 1.21" for 10 Yr. Storm event Inflow = 0.75 cfs @ 12.16 hrs, Volume= 0.060 of Outflow = 0.75 cfs @ 12.16 hrs, Volume= 0.060 af, Atten= 0%, Lag= 0.1 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Max. Velocity= 3.4 fps, Min. Travel Time= 0.0 min Avg. Velocity = 2.0 fps, Avg. Travel Time= 0.1 min Peak Depth= 0-02' @ 12.16 hrs Capacity at bank full= 378.30 cfs 10.00' x 1.00' deep channel, n= 0.011 Length= 10.0' slope= 0.1000 'r Proposed Conditions Type Ill 24-hr 10 Yr. Storm Rainfall=4.50" Prepared by Cammett Engineering Page 11 HydroCAD®7 00 s/n 000684 ©1986-2003 Applied Microcomputer Systems 4/26/2007 Reach 200: Eastern Summary Inflow Area = 1.060 ac, Inflow Depth= 1.21" for 10 Yr. Storm event Inflow = 0.98 cfs @ 12.31 hrs, Volume= 0.107 of Outflow = 0.98 cfs @ 12.32 hrs, Volume= 0.107 af, Atten= 0%, Lag= 0.3 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Max. Velocity= 3.8 fps, Min. Travel Time= 0.0 min Avg. Velocity = 2.1 fps, Avg. Travel Time= 0.1 min Peak Depth= 0.03' @ 12.32 hrs Capacity at bank full= 378.30 cfs 10.00' x 1.00' deep channel, n= 0.011 Length= 10.0' Slope= 0.1000'f Pond 2P: 12" culvert Inflow Area = 0.480 ac, Inflow Depth = 1.60" for 10 Yr. Storm event Inflow = 0.83 cfs @ 12.15 hrs, Volume= 0.064 of Outflow = 0.55 cfs @ 12.30 hrs, Volume= 0.063 af, Atten= 33%, Lag= 9.1 min Primary = 0.55 cfs @ 12.30 hrs, Volume= 0.063 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 180.10' @ 12.30 hrs Surf.Area= 1,734 sf Storage=430 cf Plug-Flow detention time= 20.1 min calculated for 0.063 of(98% of inflow) Center-of-Mass det. time= 12.7 min ( 825.7- 812.9) # Invert Avail Storage Storage Description 1 179.70' 1,275 cf Custom Stage Data (Prismatic isted below Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 179.70 0 0 0 180.00 1,500 225 225 180.50 2,700 1,050 1,275 # Routing Invert Outlet Devices 1 Primary 179.70' 12.0" x 65.0' long Culvert CPP, mitered to conform to fill, Ke= 0.700 Outlet Invert= 178.40' S= 0.0200'f n= 0.011 Cc= 0.900 - 30 hrs HW=180.10' Free Discharge) OutFlow Max-0.55 cfs 12. Primary @ Y L1=Culvert (Inlet Controls 0.55 cfs @ 1.9 fps) Pond 4P: Pool Inflow Area = 0.100 ac, Inflow Depth = 3.96 for 10 Yr. Storm event Inflow = 0.50 cfs @ 12.00 hrs, Volume= 0.033 of Outflow = 0.30 cfs @ 12.11 hrs, Volume= 0.016 af, Atten= 41%, Lag=6.7 min Primary = 0.30 cfs @ 12.11 hrs, Volume= 0.016 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Proposed Conditions Type 111 24-hr 10 Yr. Storm Rainfall=4.50" Prepared by Camrnett Engineering Page 12 HydroCADO 7.00 s/n 000684 © 1986-2003 Applied Microcomputer Systems 4/26/2007 Peak Elev= 185.62'@ 12.11 hrs Surf.Area= 1,749 sf Storage= 787 cf Plug-Flow detention time= 201.9 min calculated for 0.016 of(48% of inflow) Center-of-Mass det. time= 103.1 min (834.4 - 731.3 ) # Invert Avail.Storage Storage Description 1 185.10' 975 cf Custom Stage Data (Prismatic�isted below Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 185.10 1,500 0 0 185.60 1,500 750 750 185.70 3,000 225 975 # Routing Invert Outlet Devices 1 Primary 185.60' 60.0' long x 5.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.27 cfs @ 12.11 hrs HW=185.62' (Free Discharge) L1=Broad-Crested Rectangular Weir (Weir Controls 0.27 cfs @ 0.3 fps) Pond INF: Rooftop Infiltrator (20-SC 310) Inflow Area = 0.110 ac, lnflow Depth= 3.96 for 10 Yr. Storm event Inflow = 0.42 cfs @ 12.14 hrs, Volume= 0.036 of Outflow = 0.18 cfs @ 12.40 hrs, Volume= 0.036 af, Men= 57%, Lag= 15.8 min Discarded = 0.07 cfs @ 11.70 hrs, Volume= 0.033 of Primary = 0.12 cfs @ 12.40 hrs, Volume= 0.003 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 181.99' @ 12.40 hrs Surf.Area=480 sf Storage= 387 cf Plug-Flow detention time 28.4 min calculated for 0.036 of(100% of inflow) Center-of-Mass det. time=28.2 min ( 766.9- 738.7 ) # Invert Avail Storage Storage Description 1 180.70' 266 cf Custom Stage Data(Prismatic fisted below 960 cf Overall-295 cf Embedded = 665 cf x 40.0%Voids 2 181.20' 295 cf 28.9"W x 16.0"H x 7.121 StormTech SC-310 x 20 Inside#1 561 cf Total Available Storage Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 180.70 480 0 0 182.70 480 960 960 # Routing Invert Outlet Devices 1 Discarded 0.00' 0.008333 fpm Exfiltration over entire Surface area 2 Primary 181.80' 4.0" x 12.0' long Culvert X 2.00 CPP, projecting, no headwall, Ke= 0.900 Outlet Invert= 181.00' S= 0.0667 'f n= 0.011 Cc= 0.900 Proposed Conditions Type 111 24-hr 10 Yr. Storm Rainfall=4.50" Prepared by Cammett Engineering Page 13 HydroCAD®7.00 s/n 000684 © 1986-2003 Applied Microcomputer Systems 4/26/2007 Discarded Outflow Max=0.07 cfs @ 11.70 hrs HW=180.73' (Free Discharge) L1=Exfiltration (Exfiltration Controls 0.07 cfs) Primary OutFlow Max=0.12 cfs @ 12.40 hrs HW=181.99' (Free Discharge) L2=Culvert (Inlet Controls 0.12 cfs @ 1.2 fps) Proposed Conditions Type 111 24-hr 100 Yr. Storm Rainfall=6.40" Prepared by Cammett Engineering Page 14 HydroCADO 7.00 s/n 000684 C 1986-2003 Applied Microcomputer Systems 4/26/2007 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1: Flow towards northerly lot line Runoff Area=0.600 ac Runoff Depth=2.43" Tc=10.0 min CN=65 Runoff=1.58 cfs 0.122 of Subcatchment 2: Flow towards culvert Runoff Area=0.480 ac Runoff Depth=2.99" Tc=10.0 min CN=71 Runoff=1.56 cfs 0.120 of Subcatchment 3: Flow to eastern lot line Runoff Area=0.370 ac Runoff Depth=1.83" Tc=10.0 min CN=58 Runoff--0.71 cfs 0.056 of Subcatchment 4: Roof Area Runoff Area=4,800 sf Runoff Depth=5.69" Tc=10.0 min CN=98 Runoff--0.60 cfs 0.052 of Subcatchment 5S: Pool& patio Runoff Area=0.100 ac Runoff Depth=5.69" Tc=OA min CN=98 Runoff--0.72 cfs 0.047 of Reach 100: Northern Summary Peak Depth=0.03' Max Vel=4.6 fps Inflow--1.58 cfs 0.122 of n=0.011 L=10.0' S=0.1000? Capacity=378.30 cfs Outflow=1.58 cfs 0.122 of Reach 200: Eastern Summary Peak Depth=0.04' Max Vet=5.2 fps Inflow=2.21 cfs 0.215 of n=0.011 L=10.0' S=0.10007 Capacity=378.30 cfs Outflow=2.21 cfs 0.215 of Pond 2P: 12" culvert Peak Elev=180.27' Storage=799 cf Inflow--1.56 cfs 0.120 of 12.0"x 65.0' Culvert Outflow=1.06 cfs 0.118 of Pond 4P: Pool Peak Elev=185.63' Storage=814 cf Inflow=0.72 cfs 0.047 of Outflow--0.67 cfs 0.030 of Pond INF: Rooftop Infiltrator(20-SC 310) Peak Elev=182.22' Storage=458 cf Inflow=0.60 cfs 0.052 of Discarded=0.07 cfs 0.041 of Primary=0.33 cfs 0.011 of Outflow=0.40 cfs 0.052 of Total Runoff Area = 1.660 ac Runoff Volume =0.397 of Average Runoff Depth = 2.87" Proposed Conditions Type 111 24-hr 100 Yr. Storm Rainfall=6.40" Prepared by Cammett Engineering Page 15 ydroCAD®7.00 s/n 000684 © 1986-2003 Applied Microcomputer Systems 4/26/2007 Subcatchment 1: Flow towards northerly lot line Runoff = 1.58 cfs @ 12.15 hrs, Volume= 0.122 af, Depth= 2.43" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type III 24-hr 100 Yr. Storm Rainfall=6.40" Area (ac) CN Description 0.070 98 Paved parking & roofs 0.490 61 >75% Grass cover, Good, HSG B 0.040 55 Woods, Good, HSG B 0.600 65 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 2: Flow towards culvert Runoff = 1.56 cfs @ 12.15 hrs, Volume= 0.120 af, Depth= 2.99" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type III 24-hr 100 Yr. Storm Rainfall=6.40" _ Area (ac) CN Description 0.130 98 Paved parking & roofs 0.320 61 >75% Grass cover, Good, HSG B 0.030 55 Woods, Good, HSG B 0.480 71 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 3: Flow to eastern lot line Runoff = 0.71 cfs @ 12.16 hrs, Volume= 0.056 af, Depth= 1.83" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type III 24-hr 100 Yr. Storm Rainfall=6.40" _ Area (ac) CN Description — ' 0.190 61 >75% Grass cover, Good, HSG B 0.180 55 Woods, Good, HSG B 0.370 58 Weighted Average Proposed Conditions Type 11124-hr 100 Yr. Storm Rainfall=6.40" Prepared by Cammett Engineering Page 16 HydroCAD®7 00 s/n 000684 © 1986-2003 Applied Microcomputer Systems 4/26/2007 Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 4: Roof Area Runoff = 0.60 cfs @ 12.14 hrs, Volume= 0.052 af, Depth= 5.69" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type III 24-hr 100 Yr. Storm Rainfall=6.40" Area (sf) CN Description 4,800 98 Roof Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 5S: Pool & patio Runoff = 0.72 cfs @ 12.00 hrs, Volume= 0.047 af, Depth= 5.69" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type III 24-hr 100 Yr. Storm Rainfall=6.40" Area (ac) CN Description 0.100 98 Paved parking & roofs Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft} (ft/sec) (cfs) 0.0 Direct Entry, Reach 100: Northern Summary Inflow Area = 0.600 ac, Inflow Depth = 2.43" for 100 Yr. Storm event Inflow = 1.58 cfs @ 12.15 hrs, Volume= 0.122 of Outflow = 1.58 cfs @ 12.15 hrs, Volume= 0.122 af, Atten= 0%, Lag= 0.1 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt=0.05 hrs Max. Velocity=4.6 fps, Min. Travel Time 0.0 min Avg. Velocity = 2.1 fps, Avg. Travel Time= 0.1 min Peak Depth= 0.03' @ 12.15 hrs Capacity at bank full= 378.30 cfs 10.00' x 1.00' deep channel, n= 0.011 Length= 10.0' Slope= 0.1000 'f Proposed Conditions Type 111 24-hr 100 Yr. Storm Rainfall=6.40" Prepared by Cammett Engineering Page 17 HydroCADO 7.00 s/n 000684 © 1986-2003 Applied Microcomputer Systems 4/26/2007 Reach 200: Eastern Summary Inflow Area = 1.060 ac, Inflow Depth = 2.44" for 100 Yr. Storm event Inflow = 2.21 cfs @ 12.22 hrs, Volume= 0.215 of Outflow = 2.21 cfs @ 12.22 hrs, Volume= 0.215 af, Atten= 0%, Lag= 0.1 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Max. Velocity= 5.2 fps, Min. Travel Time= 0.0 min Avg. Velocity = 2.3 fps, Avg. Travel Time= 0.1 min Peak Depth= 0.04' @ 12.22 hrs Capacity at bank full= 378.30 cfs 10.00' x 1.00' deep channel, n=0.011 Length= 10.0' Slope= 0.1000 ? Pond 2P: 12" culvert Inflow Area = 0.480 ac, Inflow Depth = 2.99" for 100 Yr. Storm event Inflow = 1.56 cfs @ 12.15 hrs, Volume= 0.120 of Outflow = 1.06 cfs @ 12.28 hrs, Volume= 0.118 af, Atten= 32%, Lag= 8.1 min Primary = 1,06 cfs @ 12.28 hrs, Volume 0.118 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 180.27' @ 12.28 hrs Surf-Area= 2,156 sf Storage= 799 cf Plug-Flow detention time= 16.9 min calculated for 0.118 of(98% of inflow) Center-of-Mass det. time= 11.8 min ( 810.8 -799.0 ) _ # Invert Avail.Storage Storage Description 1 179.70' 1,275 af Custom Stage Data (Prismatic�isted below Elevation Surf.Area Inc.Store Cum.Store _ (feet) (sq-ft) (cubic-feet) (cubic-feet) 179.70 0 0 0 180.00 1,500 225 225 180.50 2,700 1,050 1,275 # Routing Invert Outlet Devices 1 Primary 179.70' 12.0" x 65.0' long Culvert CPP, mitered to conform to fill, Ke= 0.700 Outlet Invert= 178.40' S= 0.02007 n= 0.011 Cc= 0.900 Primary OutFlow Max=1.05 cfs @ 12.28 hrs HW=180.27' (Free Discharge) 'L1=Culvert (Inlet Controls 1.05 cfs @ 2.3 fps) Pond 4P: Pool Inflow Area = 0.100 ac, Inflow Depth = 5.69" for 100 Yr. Storm event Inflow = 0.72 cfs @ 12.00 hrs, Volume= 0.047 of Outflow = 0.67 cfs @ 12.02 hrs, Volume= 0.030 af, Atten= 7%, Lag= 1.1 min Primary = 0.67 cfs @ 12.02 hrs, Volume 0.030 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Proposed Conditions Type ll/ 24-hr 100 Yr. Storm Rainfall=6.40" Prepared by Cammett Engineering Page 18 HydroCADO 7.00 s/n 000684 © 1986-2003 Applied Microcomputer Systems 4/26/2007 Peak Elev= 185.63' @ 12.02 hrs Surf.Area= 1,926 sf Storage= 814 cf Plug-Flow detention time= 152.2 min calculated for 0.030 of(64% of inflow) Center-of-Mass det. time= 75.3 min ( 804.8 - 729.5 ) # Invert Avail.Storage Storage Description 1 185.10' 975 cf Custom Stage Data (Prismatic�isted below Elevation Surf.Area Inc.Store Cum.Store _ (feet) (sq-ft) (cubic-feet) (cubic-feet) 185.10 1,500 0 0 185.60 1,500 750 750 185.70 3,000 225 975 # Routing Invert Outlet Devices 1 Primary 185.60' 60.0' long x 5.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.64 cfs @ 12.02 hrs HW=185.63' (Free Discharge) Z1=Broad-Crested Rectangular Weir (Weir Controls 0.64 cfs @ 0.4 fps) Pond INF: Rooftop Infiltrator (20-SC 310) Inflow Area = 0.110 ac, Inflow Depth 5.69" for 100 Yr. Storm event Inflow = 0.60 cfs @ 12.14 hrs, Volume 0.052 of Outflow = 0.40 cfs @ 12.27 hrs, Volume= 0.052 af, Atten= 33%, Lag= 7.8 min Discarded = 0.07 cfs @ 11.45 hrs, Volume= 0.041 of Primary = 0.33 cfs @ 12.27 hrs, Volume= 0.011 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 182.22' @ 12.27 hrs Surf.Area=480 sf Storage=458 cf Plug-Flow detention time= 26.4 min calculated for 0.052 of(100% of inflow) Center-of-Mass det. time= 26.2 min (763.0-736.8) # Invert Avail Storage Storage Description 1 180.70' 266 cf Custom Stage Data (Prismatic fisted below 960 cf Overall - 295 cf Embedded = 665 cf x 40.0%Voids 2 181.20' 295 cf 28.9"W x 16.0"H x 7.12'L StormTech SC-310 x20 Inside#1 561 cf Total Available Storage Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 180.70 480 0 0 182.70 480 960 960 # Routing Invert Outlet Devices 1 Discarded 0.00' 0.008333 fpm Exfiltration over entire Surface area 2 Primary 181.80' 4.0" x 12.0' long Culvert X 2.00 CPP, projecting, no headwall, Ke= 0.900 Outlet Invert 181.00' S= 0.0667 'r n= 0.011 Cc= 0.900 Proposed Conditions Type Ill 24-hr 100 Yr. Storm Rainfall=6.40" Prepared by Cammett Engineering Page 19 HydroCAM 7.00 s/n 000684 © 1986-2003 Applied Microcomputer Systems 4/26/2007 Discarded OuTlow Max=0.07 cfs @ 11.45 hrs HW=180.72' (Free Discharge) L1=Exfiltration (Exfiltration Controls 0.07 cfs) Primary OutFlow Max=0.33 cfs @ 12.27 hrs HW=182.21' (Free Discharge) t-2=Culvert (Inlet Controls 0.33 cfs @ 1.9 fps) I Pollutant Loads.xls II Projections of Downgradient Chemical Concentrations W.C.Cammett Engineering,Inc. at 15 Timber Lane, North Andover, MA. Calculated By: MET Reviewed By: FVF Date: 6/8/2007 Methodology: SOURCE: "PROTECTING WATER QUALITY IN URBAN AREAS" (PWQUA) "Best Management Practices for Minnesota" BY: Minnesota Pollution Control Agency, Division of Water Quality TABLE 2-1: MEAN POLLUTANT CONCENTRATIONS(mg/L) (PWQUA) LAND USE POLLUTANT RESIDENTIAL TKN 2.35 Total P 0.46 WHERE: TKN =Total Kjeldahl Nitrogen Total P=Total Phosphorus ESTIMATING ANNUAL POLLUTANT LOADINGS (PWQUA) 717--1 L =AxPxRxCx0.226 Eq. 2-4 WHERE: L=Annual pollutant loading, pounds A=Watershed area,acres P =Annual precipitation, inches 42 inches HA-7 R= Runoff coefficient, unitiess C = Mean Pollutant concentration, mg/L SEE TABLE 2-1 0.226=Conversion factor HA-7 = Hydrologic Investigations Atlas-7 "Average annual runoff and precipitation in the New England-New York area", USDA-United States Geological Survey R=0.9(0.05 + 0.009(1)) Eq. 2-3 WHERE: R= Runoff coefficient, unitless I =Impervious area in watershed(percent) 0.9 = 10%of storms with no appreciable runoff II� W.C. Cammett Engineering, Inc. 6/11/2007 15 Timber Lane, No. Andover, MA Pollutant Loads.xls Watershed Area and Percent Impervious Calculation PRE-DEVELOPED CONDITIONS Pre-Developed Residential= 1.66 Ac. Impervious Area= 0.29 Ac. I =(Percent Impervious Area)= 17.5 % POST-DEVELOPED CONDITIONS Post-Developed Residential Bypass= 1.07 Ac. Impervious Area= 0.17 Ac. I =(Percent Impervious Area)= 15.9 % Post-Developed Residential Treated= 0.48 Ac. Impervious Area= 0.13 Ac. I = (Percent Impervious Area)= 27.1 % Note: The slight decrease in area from Pre to Post Developed Conditions is due to the area tributary to the proposed infiltration chambers which does not discharge to the downgradient property limits. ESTIMATED ANNUAL POLLUTANT LOADINGS PRE-DEVELOPMENT CONDITIONS Area POLLUTANT A P R C 0.226 L Description acres inches unitless (mg(7) (lbs. ) Residential TKN 1.66 42 0.187 2.35 0.226 6.91 Residential TOTAL P 1.66 42 0.187 0.46 0.226 1.35 TOTAL Pre-Developed (TKN)Annual Pollutant Loading= 6.91 TOTAL Pre-Developed(Phosphorus)Annual Pollutant Loading= 1.35 I W.C. Cammett Engineering, Inc. 6/11/2007 15 Timber Lane, No.Andover, MA Pollutant Loads.xls ESTIMATED ANNUAL POLLUTANT LOADINGS POST-DEVELOPMENT CONDITIONS BEFORE TREATMENT Area POLLUTANT A P R C 0.226 L Description acres inches unitless (mg/I) (lbs. ) Residential TKN 1.07 42 0.174 2.35 0.226 4.15 (Bypass) Residential TOTAL P 1.07 42 0.174 0.46 0.226 0.81 (Bypass Residential TKN 0.48 42 0.264 2.35 0.226 2.83 To be Treated Residential TOTAL P 0.48 42 0.264 0.46 0.226 0.55 (To be Treated) TOTAL Post-Developed (TKN)Annual Pollutant Loading (Bypass) = 4.15 TOTAL Post-Developed (Total P)Annual Pollutant Loading (Bypass) = 0.81 TOTAL Post-Developed (TKN)Annual Pollutant Loading (Res. Before Treatment) =1 2.83 TOTAL Post-Developed (Total P)Annual Pollutant Loading (Res. Before Treatment)= 0.55 Treatment From Grass Swale Upstream of Culvert SOURCE: "An Evaluation of Urban Stormwater Pollutant Removal through Grassed Swale Treatment by Paul H.Oakland" (NHWSBPCC) Removal efficiency(TKN)= 16% Removal efficiency(Total P)= 5% (Total TKN)After Removal= 2.38 (Total P)After Removal= 0.53 Post-Developed Annual Pollutant Loading(lbs.) Total (TKN)= 6.52 lbs. Total(Total P)= 1.34 Lbs. Pre and Post-Developed Annual Pollutant Loading Comparison(lbs.) Pre-Developed Conditions Post-Developed Conditions Loading Change Total TKN = 6.91 lbs. Total TKN = 6.52 lbs. -0.38 lbs. Total Total P = 1.35 lbs, I TotalTotal P = 1.34 lbs. -0.01 lbs. Negative loading changes indicate'anet decrease in pollutant loadings at the downgradient property limits. M:\\Winword\2006\06106\WQ-Calculations\Pollutant loads.xls W.C. Cammett Engineering, Inc.6/11/2007 15 Timber Lane, No.Andover, MA Abutter to Abutter( ) Building Dept. ( ) Conservation ( ) Zoning ( ) REQUIREMENT. MGL 40A,Section 1 T states in part"Parties in Interest as used in this chapter shall mean the petitioner, abutters,owners of land directly opposheon any public or private way,and abutters to abutters within three hundred(300)feet of the property line of the petitioner as they appear on the most recent applicable tax list,not withstanding that the land of any such owner is located in another city or town,the planning board of the city or toren,and the planning board of every abuttirxt city or town." Subiect Property: MAP PARCEL Name Address 64 38 David Fournier 15 Timber Lane,North Andover,MA 01845 Abutters Properties Map Parcel Name Address 64 2 Connie Yee 137 Brentwood Circle,North Andover,MA 01845 64 37 Alden Lincoln 135 Brentwood Circle,North Andover,MA 01845 64 57 Barbara James 132 Brentwood Circle,North Andover,MA 01845 64 56 Daniel Carroll 150 Brentwood Circle,North Andover,MA 01845 64 55 John Korona 178 Brentwood Circle,North Andover,MA 01845 64 54 Barbara Cataudella 200 Brentwood Circle,North Andover,MA 01845 64 39 30 Timeber Lane RT 30 Timber Lane,North Andover,MA 01845 64 40 William Duffy 22 Timber Lane,North Andover,MA 01845 64 41 Edward Brown 6 Timber Lane,North Andover,MA 01845 64 42 Jeffrey Ferrante 171 Brentwood Circle,North Andover,MA 01845 104.0 84 Gregory Andrusin 225 Bridle Path,North Andover,MA 01845 104.0 85 Kathleen Ercolini 195 Bridle Path,North Andover,MA 01845 104.0 86 Gabrielle Schmitt 165 Bridle Path,North Andover,MA 01845 104.0 78 B&R Const.c/o Jones 403 Sutton Street,North Andover,MA 01845 104.0 79 Harry Dow 200 Bridle Path,North Andover,MA 01845 104.0 80 CLY-KWY Nominee RT 224 Bridle Path,North Andover,MA 01845 104.0 14 Martin Smolak 315 South Bradford Street,North Andover,MA 01845 104.0 87 Thomas Mitro 145 Bridle Path,North Andover,MA 01845 This certifies that the names appearing on the records of the Assessors Office as of Certified by: Date4-?fly' f- lk NORTh OOL it _ a I( � O [oc.�wc�gwKw HU`�'���g CONSERVATION DEPARTMENT Community Development Division MEMORANDUM DATE: February 5, 2007 TO: Johnson& Borenstein, LLC. CC: DEP NERO The Neve-Morin Group, Inc. (via fax) File FROM: Alison E. McKay, Conservation Administrator �� RE: 242-1379 Timber Lane,North Andover- ORAD Revision Attached is a revised original page 2 of WPA Form 4B-Order of Resource Area Delineation. The form was revised by this office to reflect that the approved wetland resource area as an Isolated Wetland Resource area of greater than 1,000 s.f. in size jurisdictional under the North Andover Wetlands Protection Bylaw only and not a Bordering Vegetated Wetland Resource Area. Please replace this page with the attached page 2 appropriately. Please let me know if you have further questions or concerns in this regard. 1600 Osgood Street North Andover Massachusetts 01845 Phone 978.688.9530 fax 978.688.9542 Web www.townofnorthandover.com i � a 1 To cfJ,c� CGE' Copy LLIJMassachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands DEP Flee Number: WPA Form Q — Order of Resource Area Delineation 242-1379 Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 Provided by DEP B. Order of Delineation 1. The Conservation Commission has determined the followingcheck whichever is applicable): { a. ® Accurate: The boundaries described on the referenced plan(s)above and in the Abbreviated Notice of Resource Area Delineation are accurately drawn for the following resource area(s): 1. ® 7tSpL4igAVegetated Wetlands (> IRoo s,f.–L,,.A�w t51J;V, CA iy 2. ® Other Resource Area(s), specifically: All wetland resource area flags shown on the subject property only(WF1 through WF 4&WF 12 through WF 17)and all associated buffer zones which fall on the subject property(25'No- Disturbance Zone, 50' No-Build Zone, and 100'buffer zone). b. ❑ Modified: The boundaries described on the plan(s) referenced above, as modified by the Conservation Commission from the plans contained in the Abbreviated Notice of Resource Area Delineation, are accurately drawn from the following resource area(s): i. ❑ Bordering Vegetated Wetlands 2. ❑ Other Resource Area(s), specifically: c. ❑ Inaccurate: The boundaries described on the referenced plan(s)and in the Abbreviated Notice of Resource Area Delineation were found to be inaccurate and cannot be confirmed for the following resource area(s): 1. ❑ Bordering Vegetated Wetlands 2. ❑ Other Resource Area(s), specifically: �I3. The boundaries were determined to be inaccurate because: wpaform4b.doc•rev.01107 Page 2 of 7 Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands DEP File Number: WPA Form 4B — Order of Resource Area Delineation 242-1379 Provided by DEP Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 A. General Information Important: North Andover When filling out From: 1.Conservation Commission forms on the computer,use 2. This Issuance is for(check one): only the tab key to move your cursor-do not a. ® Order of Resource Area Delineation Only use the return key. b. ❑ Order of Resource Area Delineation Subject to Simplified Review �. ❑ Not Subject to Stormwater Policy 2. ❑ Subject to Stormwater Policy c. ❑ Amended Order of Resource Area Delineation Note: Before 3. To: Applicant: completing this form consult David H. Fournier C/c Johnson& Borenstein, LLC your local a. First Name b.Last Name c.Company Conservation Commission 12 Chestnut Street regarding any d.Mailing Address municipal bylaw Andover MA. 01810 or ordinance, e.City/Town f.State g.Zip Code 4. Property Owner(if different from applicant): a.First Name b.Last Name c.Company d.Mailing Address e.City/Town f.State g.Zip Code 5. Project Location: 15 Timber Lane North Andover a.Street Address b.City/Town Map 64 Parcel 38 c.Assessors Map/Plat Number d.Parcel/Lot Number Latitude and Longitude(note: electronic filers will click for GIS locator): e.Latl ude f.*Lonq 12/29/06 d 6. Dates: a.Date Notice of Intent filed b.Date ubli earing Closed c.Da 7. Title and Date(or Revised Date if applicable)of Final Plans and Other Documents: f Exisitng Conditions Plan IWij 111610-7 a.Title b.Date o—,*"A for azu'illo.,ak c.Title d.Date wpaform4b.doc•rev.06/13/05 Page 1 of 7 Order of Resource Area Delineation 15 Timber Lane DEP File #242-1379 Record Documents: ➢ Abbreviated Notice of Resource Area Delineation, received December 29, 2006; ➢ Plan entitled "Existing Conditions' - ANRAD Application, 15 Timber Lane. Prepared by Cammett Engineering, Inc, dated 12/4/06,last revised 1/15/07. Stamped & signed by Timothy J. Meehan, P.L.S; ➢ Letter from The Neve-Morin Group, Inc. to Connie Yee dated January 3,2007; ➢ Letter from the Neve-Morin Group,Inc. to the Conservation Commission dated January 15, 2007. I LIMassachusetts Department of Environmental Protection Bureau of Resource Protection -Wetlands DEP File Number: WPA Form Q — Order of Resource Area Delineation 242-1379 Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 Provided by DEP B. Order of Delineation 1. The Conservation Commission has determined the following (check whichever is applicable): a. ® Accurate: The boundaries described on the referenced plan(s)above and in the Abbreviated Notice of Resource Area Delineation are accurately drawn for the following resource area(s): t ® Bordering Vegetated Wetlands 2. ® Other Resource Area(s), specifically: All wetland resource area flags shown on the subject property only (WF1 through WF 4&WF 12 through WF 17)and all associated buffer zones which fall on the subject property(25' No- Disturbance Zone, 50' No-Build Zone, and 100' buffer zone). b. ❑ Modified: The boundaries described on the plan(s) referenced above, as modified by the Conservation Commission from the plans contained in the Abbreviated Notice of Resource Area Delineation, are accurately drawn from the following resource area(s): 1. ❑ Bordering Vegetated Wetlands 2. ❑ Other Resource Area(s), specifically: c. ❑ Inaccurate: The boundaries described on the referenced plan(s)and in the Abbreviated Notice of Resource Area Delineation were found to be inaccurate and cannot be confirmed for the following resource area(s): 1. ❑ Bordering Vegetated Wetlands 2. ❑ Other Resource Area(s), specifically: 3. The boundaries were determined to be inaccurate because: wpaform4b.doc•rev.01107 Page 2 of 7 Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands DEP File Number: WPA Form Q — Order of Resource Area Delineation 242-1379 Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 Provided by DEP C. Simplified Buffer Zone Review Work within the Buffer Zone pursuant to the Simplified Review(310 CMR 10.02) requires that you must comply with the following conditions. If your project does not meet these requirements, you are required to either file a Determination of Applicability or Notice of Intent or take other corrective measures as directed by the Conservation Commission. Simplified Review Conditions: Work conducted under Simplified Review requires the following: 1. No work of any kind shall occur within any wetland resource areas including Riverfront Area and Bordering Land Subject to Flooding. 2. The inner 0-to-50-foot wide area from the delineated wetland boundary that has a Buffer Zone shall not be disturbed by any work associated with this project, including placement of any stormwater management components. 3. No work shall occur in the Buffer Zone bordering an Outstanding Resource Water(e.g., certified vernal pool, public water supply reservoir or tributary), as defined in 314 CMR 4.00 or border coastal resource areas at 310 CMR 10.25-10.35. 4. No work shall occur in the Buffer Zone adjacent to wetland resources with estimated wildlife habitat(which is identified on the most recent Estimated Habitat Map of State-listed Rare Wetlands Wildlife). 5. Erosion and Sedimentation controls shall be installed and maintained at the 50-foot Buffer Zone line or limit of work(whichever is a greater distance from the resource area)to protect resource areas during construction. 6. If the project is subject to the Massachusetts Stormwater Policy, all work shall be conducted in conformance with an approved Stormwater Management Plan. 7. The Buffer Zone does not contain a slope greater than an average of 15%at its steepest gradient across the 100-foot Buffer Zone. 8. The amount of new impervious surface, in combination with existing impervious surfaces, shall not exceed 40%of the Buffer Zone between 50 and 100 feet. 9. No work is allowed, and no additional NOI or RDA shall be filed, for any work within the 0-to-50- foot Buffer Zone during the three-year term of an Order associated with this application. 10. Prior to any work being undertaken pursuant to this Order, the wetland resource boundary shall be flagged; all boundary delineation flagging should be maintained for the term of the Order. 11. If stormwater management structures are proposed in the Buffer Zone, the stormwater management structures shall be maintained as required in the Stormwater Plan. Such maintenance constitutes an ongoing condition and is not subject to further permitting requirements. 12. If this ORAD involves work as part of a Simplified Review, the ORAD shall be recorded at the Registry of Deeds prior to the commencement of work per the requirements of Section F. 13. Prior to proceeding with any work under Simplified Review, applicants are required to provide written notice to the Commission one week prior to commencing any work. 14. If work authorized under Simplified Review is commenced, no work is allowed, and no additional NOI or RDA may be filed,for any work within the 0-to-50-foot buffer zone during the term of an ORAD associated with this application. If work authorized under Simplified Review is not commenced,then future NOls or RDAs may be filed for work within the 0-to-50-foot portion of the buffer zone. --End of Conditions— wpaform4b.doc•rev.06/13/05 Page 3 of 7 Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands DEP File Number: WPA Form 4B — Order of Resource Area Delineation 242-1379 Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 Provided by DEP C. Simplified Buffer Zone Review (cont.) Stormwater Applicability 1. ❑ The project is not subject to the Stormwater Policy. 2. ❑ The project is subject to the Stormwater Policy and the Stormwater Plan included for the project complies with all stormwater standards. Ineligibility Determinations Site Conditions: The applicant is not eligible for Simplified Buffer Zone review and must file a Request for Determination of Applicability or Notice of Intent prior to any work because: 3. ❑ Work is within the Buffer Zone of a Coastal Resource Area as defined at 310 CMR 10.25- 10.35. 4. ❑ The Buffer Zone contains existing slopes greater than an average of 15%. 5. ❑ Buffer Zone contains estimated rare wildlife habitat.' s. [:1The site borders an Outstanding Resource Water.2 Stormwater 7. ❑ The project is subject to the Stormwater Policy and the applicant has not submitted sufficient information to demonstrate compliance with the Stormwater Management Policy. Prior to any work, the applicant must submit plans showing compliance with the standards in the Stormwater Policy, the location of the work, the amount of impervious surface, and the location of erosion controls, to the Commission for its concurrence. (See instructions to ANRAD Form 4A.)The following necessary stormwater information was not submitted by the applicant: a. a. ❑ The project is subject to the Stormwater Policy but the project does not comply with one or more of the Stormwater standards(specify which standard(s) not met). a.Standard# b. Standard# s. ❑ Impervious surface exceeds 40%of the area of the Buffer Zone between 50 and 100 feet from the resource area. 10. ❑ The applicant did not submit plans depicting adequate erosion and sedimentation controls located at the limit of work or at least 50 feet from any resource areas,whichever will be greater. 11. ❑ Work is proposed within 50 feet of a resource area. Notice to Commission Any applicant proposing to proceed under Simplified Buffer Zone Review, as specified in 310 CMR 10.02, must provide written notice to the Commission one week prior to any work. ' Identified on the most recent Estimated Habitat Map of State-listed Rare Wetlands Wildlife of the Natural Heritage and Endangered Species Program. 2 Certified Vernal Pools,public water supplies, orinland ACECs as identified in 314 CMR 4.00. aformft.doc•rev.06/13/05 H'P Page 4 of 7 Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands DEP File Number: WPA Form 4B — Order of Resource Area Delineation 242-1379 Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 Provided by DEP D. Findings This Order of Resource Area Delineation determines that the Stormwater Plan, if applicable, and the boundaries of those resource areas noted above, have been delineated and approved by the Commission and are binding as to all decisions rendered pursuant to the Massachusetts Wetlands Protection Act (M.G.L. c.131, §40)and its regulations(310 CMR 10.00). This Order does not, however, determine the boundaries of any resource area or Buffer Zone to any resource area not specifically noted above, regardless of whether such boundaries are contained on the plans attached to this Order or to the Abbreviated Notice of Resource Area Delineation. The Agent or members of the Conservation Commission and the Department of Environmental Protection shall have the right to enter and inspect the area subject to this Order at reasonable hours to evaluate compliance with the conditions stated in this Order, and may require the submittal of any data deemed necessary by the Conservation Commission or Department for that evaluation. If the Abbreviated Notice of Resource Area Delineation was filed as Simplified Review for a Buffer Zone project, the applicant has certified that any work associated with the proposed project meets all eligibility requirements for Simplified Review listed in Section C of this Order. Any work that does not comply with the Simplified Review requirements will require a Notice of Intent or Request for Determination of Applicability. The applicant is responsible for promptly requesting a Certificate of Compliance following completion of any work allowed pursuant to a Simplified Review or no later than three years from the date of the Order of Resource Area Delineation unless the Order is extended. Failure to comply with the conditions of this Order is grounds for the Conservation Commission or the Department to take enforcement action. This Order must be signed by a majority of the Conservation Commission. The Order must be sent by certified mail (return receipt requested)or hand delivered to the applicant. A copy also must be mailed or hand delivered at the same time to the appropriate DEP Regional Office. E. Appeals The applicant,the owner,any person aggrieved by this Order,any owner of land abutting the land subject to this Order, or any ten residents of the city or town in which such land is located,are hereby notified of their right to request the appropriate DEP Regional Office to issue a Superseding Order of Resource Area Delineation.When requested to issue a Superseding Order of Resource Area Delineation,the Department's review is limited to the objections to the resource area delineation(s)stated in the appeal request.The request must be made by certified mail or hand delivery to the Department,with the appropriate filing fee and a completed Request for Departmental Action Fee Transmittal Form,as provided in 310 CMR 10.03(7)within ten business days from the date of issuance of this Order.A copy of the request shall at the same time be sent by certified mail or hand delivery to the Conservation Commission and to the applicant, if he/she is not the appellant.Any appellants seeking to appeal the Department's Superseding Order associated with this appeal will be required to demonstrate prior participation in the review of this project. Previous participation in the permit proceeding means the submission of written information to the Conservation Commission prior to the close of the public hearing, requesting a Superseding Order or Determination, or providing written information to the Department prior to issuance of a Superseding Order or Determination. The request shall state clearly and concisely the objections to the Order which is being appealed and how the Order does not contribute to the protection of the interests identified in the Massachusetts Wetlands Protection Act, (M.G.L. c. 131, §40)and is inconsistent with the wetlands regulations(310 CMR 10.00).To the extent that the Order is based on a municipal bylaw or ordinance,and not on the Massachusetts Wetlands Protection Act or regulations,the Department of Environmental Protection has no appellate jurisdiction. wpaform4b.doc•rev.06/13/05 Page 5 of 7 LIMassachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands DEP File Number: WPA Form Q — Order of Resource Area Delineation 242-1379 Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 Provided by DEP F. Signatures and Notary Acknowledgement Please indicate the n f members who will sign this form: 1.Number of Signers Signature of Co sere mission Member S' turf CfjKtioqCommission Member Sig We f Conservation C,emmi �ion Member , Sig iurqfdf 06nit i n ommissi Member Signature of Conse ion mmission Member Signature of Cons Commiss n Member ignature of mission Member This Order is valid for three years from the date of issuance. This Order is issued to the applicant and the property owner(if different) as follows: ❑ by hand delivery on Lfby certifier] mail, return receipt requested on Dateto Date Notary Acknowledgement Commonwealth of Massachusetts County of Essex North a4 _ x007 On this Day of Month �I - Year Before me, the undersigned Notary Public, &V* ua.SSg- personally appeared Name of Document Signer proved to me through satisfactory evidence of identification,which was/were Massachusetts License Description of evidence of identification to be the person whose name is signed on the preceding or attached document, and acknowledged to me that he/she signed it voluntarily for its stated purpose. As member of North Andover Conservation Commission Cityrrown DONNA IIA.WEDGE 14 ee-"V' f� NOTARY KSLIC S nature of Notary Public COMMONNIWH OF VASSACHUSETTS _ �+ My Comm.Expires Aug.7.2009 DY1i9 ✓� ,/ �l�G�" Printed Name of Notary Public /.7 /a6o 9 Place notary seal and/or any stamp above k-My Commi Sion xpires(Date) This Order is issued to the applicant as follows: it wpaformft.doc-rev.06/13/05 Page 6 of 7 Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands DEP File Number: WPA Form 4B — Order of Resource Area Delineation 242-1371 Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 Provided by DEP G. Recording Information If this Order is issued for purposes of Resource Area Delineation only, this Order should NOT be recorded. If this Order of Resource Area Delineation is issued as part of a Simplified Review, this Order must be recorded in the Registry of Deeds or the Land Court for the district in which the land is located,within the chain of title of the affected property. In the case of recorded land, the Final Order shall also be noted in the Registry's Grantor Index under the name of the owner of the land subject to the Order. In the case of registered land, this Order shall also be noted on the Land Court Certificate of Title of the owner of the land subject to the Order of Conditions. The recording information on Page 6 of this form shall be submitted to the Conservation Commission listed below. North Andover Conservation Commission Detach on dotted line, have stamped by the Registry of Deeds and submit to the Conservation Commission. -------------------------------------------------------------------------------------------------------------------------- To: North Andover Conservation Commission Please be advised that the Order of Conditions for the Project at: 242-1379 Project Location DEP File Number Has been recorded at the Registry of Deeds of: County Book Page for: Property Owner and has been noted in the chain of title of the affected property in: Book Page In accordance with the Order of Conditions issued on: Date If recorded land, the instrument number identifying this transaction is: Instrument Number If registered land, the document number identifying this transaction is: Document Number Signature of Applicant wpaform4b.doc•rev.06/13/05 Page 7 of 7 Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands DEP Regional Addresses Massachusetts Wetlands Protection Act M.G.L. c 131, §40 Mail transmittal forms and DEP payments,payable to: Commonwealth of Massachusetts Department of Environmental Protection Box 4062 Boston, MA 02211 DEP Western Region Adams Colrain Hampden Monroe Pittsfield Tyringham 436 Dwight Street Agawam Conway Hancock Montague Plainfield Wales Alford Cummington Hatfield Monterey Richmond Ware Suite 402 Amherst Dalton Hawley Montgomery Rowe Warwick Springfield,MA 01103 Ashfield Deerfield Heath Monson Russell Washington Phone:413-784-1100 Becket Easthampton Hinsdale Mount Washington Sandisfield Wendell Belchertown East Longmeadow Holland New Ashford Savoy Westfield Fax:413-784-1149 Bemardston Egremont Holyoke New Marlborough Sheffield Westhampton Blandford Erving Huntington New Salem Shelburne West Springfield Brimfield Florida Lanesborough North Adams Shutesbury West Stockbridge Buckland Gill Lee Northampton Southampton Whately Charlemont Goshen Lenox Northfield South Hadley Wilbraham Cheshire Granby Leveret! Orange Southwick Williamsburg Chester Granville Leyden Otis Springfield Williamstown Chesterfield Great Barrington Longmeadow Palmer Stockbridge Windsor Chicopee Greenfield Ludlow Pelham Sunderland Worthington Clarksburg Hadley Middlefield Peru Tolland DEP Central Region Acton Charlton Hopkinton Millbury Rutland Uxbridge 627 Main Street Ashburnham Clinton Hubbardston Millville Shirley Warren Ashby Devens Hudson New Braintree Shrewsbury Webster Worcester,MA 01605 Athol Douglas Holliston Northborough Southborough Westborough Phone:508-792-7650 Auburn Dudley Lancaster Northbridge Southbridge West Boylston Fax:508-792-7621 Ayer Dunstable Leicester North Brookfield Spencer West Brookfield Barre East Brookfield Leominster Oakham Sterling Westford TDD:508-767-2788 Bellingham Fitchburg Littleton Oxford Stow Westminster Berlin Gardner Lunenburg Paxton Sturbridge Winchendon Blackstone Grafton Marlborough Pepperell Sutton Worcester Bolton Groton Maynard Petersham Templeton Boxborough Harvard Medway Phillipston Townsend Boylston Hardwick Mendon Princeton Tyngsborough Brookfield Holden Milford Royalston Upton Hopedale DEP Southeast Region Abington Dartmouth Freetown Mattepoisett Provincetown Tisbury 20 Riverside Drive Acushnet Dennis Gosnold Middleborough Raynham Truro Aquinnah Dighton Halifax Nantucket Rehoboth Wareham Lakeville,MA 02347 Attleboro Duxbury Hanover New Bedford Rochester Wellfleet Phone:508-946-2700 Avon Eastham Hanson North Attleborough Rockland West Bridgewater Fax:508-947-6557 Barnstable East Bridgewater Harwich Norton Sandwich Westport Berkley Easton Kingston Norwell Scituate West Tisbury TDD:508-946-2795 Bourne Edgartown Lakeville Oak Bluffs Seekonk Whitman Brewster Fairhaven Mansfield Orleans Sharon Wrentham Bridgewater Fall River Marion Pembroke Somerset Yarmouth Brockton Falmouth Marshfield Plainville Stoughton Carver Foxborough Mashpee Plymouth Swansea Chatham Franklin Plympton Taunton Chilmark DEP Northeast Region Amesbury Chelmsford Hingham Merrimac Quincy Wakefield One Winter Street Andover Chelsea Holbrook Methuen Randolph Walpole Arlington Cohasset Hull Middleton Reading Waltham Boston,MA 02108 Ashland Concord Ipswich Millis Revere Watertown Phone:617-654-6500 Bedford Danvers Lawrence Milton Rockport Wayland Fax: 617-556-1049 Belmont Dedham Lexington Nahant Rowley Wellesley Beverly Dover Lincoln Natick Salem Wenham TDD:617-574-6868 Billerica Dracut Lowell Needham Salisbury West Newbury Boston Essex Lynn Newbury Saugus Weston Boxford Everett Lynnfield Newburyport Sherborn Westwood Braintree Framingham Malden Newton Somerville Weymouth Brookline Georgetown Manchester-By-The-Sea Norfolk Stoneham Wilmington Burlington Gloucester Marblehead North Andover Sudbury Winchester Cambridge Groveland Medfield North Reading Swampscott Winthrop Canton Hamilton Medford Norwood Tewksbury Woburn Carlisle Haverhill Melrose Peabody Topsfleld Wpaform4b.doc-rev,11/22/00 Page 1 o 1 LlMassachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands Request for Departmental Action Fee Transmittal Form Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 A. Request Information Important: When filling out 1. Person or party making request(if appropriate, name the citizen group's representative): forms on the computer, use Name only the tab key to move your cursor- Mailing Address do not use the return key. City/Town State Zip Code _I� Phone Number Fax Number(if applicable) Project Location Mailing Address City/Town State Zip Code 2. Applicant(as shown on Notice of Intent(Form 3),Abbreviated Notice of Resource Area Delineation (Form 4A); or Request for Determination of Applicability(Form 1)): Name Mailing Address City/Town State Zip Code Phone Number Fax Number(if applicable) 3. DEP File Number: B. Instructions 1. When the Departmental action request is for(check one): ❑ Superseding Order of Conditions ❑ Superseding Determination of Applicability ❑ Superseding Order of Resource Area Delineation Send this form and check or money order for$100.00(single family houseprojects)or$200(all otherprojects), payable to the Commonwealth of Massachusetts to: Department of Environmental Protection Box 4062 Boston, MA 02211 Wpaform4b.doc•rev.10/04 Page 1 of 2 Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands Request for Departmental Action Fee Transmittal Form Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 B. Instructions (cont.) 2. On a separate sheet attached to this form, state clearly and concisely the objections to the Determination or Order which is being appealed. To the extent that the Determination or Order is based on a municipal bylaw, and not on the Massachusetts Wetlands Protection Act or regulations, the Department has no appellate jurisdiction. 3. Send a copy of this form and a copy of the check or money order with the Request for a Superseding Determination or Order by certified mail or hand delivery to the appropriate DEP Regional Office. 4. A copy of the request shall at the same time be sent by certified mail or hand delivery to the Conservation Commission and to the applicant, if he/she is not the appellant. i Wpaform4b.doc•rev.10/04 Page 2 of 2 FORMA C= C) APPLICATION FOR APPROVAL NOT REQUIRED CV%. "C7 DATE: � (Stamp two (2) forms with the Town Clerk. File one (1) form with the Town Clerk and one (1�4 withWe E-,3rn� Planning Board.) t.: To the Planning Board: N s The undersigned,believing that the accompanying plan of property in the Town of North Andover,Massachusetts, does not constitute a subdivision within the meaning of the Subdivision Control Law,herewith submits said plan for a determination and endorsement that the Planning Board approval under the Subdivision Control Law is not required. I.Name of Applicant: Town of North Andover Address: Parcel A Timber Lane 2.Location and Description of Property[include Assessor's Map andLot and ZoningDistrict(s)]: Town owns land — No Map & Parcel; to be combined with 15 Timber Lane Map 64, Lot 38 3.Deed Reference: Book 2990 Page 341 (Deed 15 Timber Lane into HDi/`Fournier or Certificate of Title: 4.Name of Surveyor: Camm$tt Engineering Address: 297 Elm Street Amesbury, MA Signature of Owner(s): Town of North Andover Address: 120 Main Street, North Andover, MA 7 7 i Please indicate the grounds(either A,B,C or D,not a combination)on which you believe your plan not to be a subdivision. A. Each lot on the plan meets one of the following criteria: 1. Has the frontage,lot area,and lot width required under the Zoning By-law on: a) a public way,or b) a way which the Town Clerk certifies is maintained&used as a public way,or c) a way shown on a plan approved and endorsed by the Planning Board under the Subdivision Control Law,recorded in Plan Book Plan ,or d) a way in existence before the adoption of the Subdivision Control Law by the Town and which the Board finds adequate for the way's proposed use,or e) a way shown on a plan of a subdivision recorded at the Registry of Deeds or the Land Court prior to the adoption of the Subdivision Control Law. Each Lot has been clearly marked on the plan to be either: (3 joined to and made part of an adjacent lot,or b) labeled "Not A Building Lot". C. Each lot on the plan contains a building which existed prior to the adoption of the Subdivision Control Law. D. The plan shows an existing parcel with no new lot division(s) and has frontage on a way described above. Received: Town of North Andover Town Clerk(date stamp): Signature of Town Official receiving this application: a� y TPrI� RECEIVED s ail i :*+� 00 Notice to APPLICANTI'I'OWN CLERK of action of Planning Board on accompj y I Nota , R w oval.under the 101, The North Andover Planning Board has determined that saidl n does .t , t�{ Subdivision Control Law,and the appropriate endorsement as defined by 2, The North Andover Planning Board has determined that said plan approval under�leiSubdiviision Control G.L.c.41,s. 81-L and must therefore be re-submitted to it for appro Law. Very truly yours, • North Andover Planning Board By: Date: x/3/06 Town of North Andover °f 140o TM ,M Office of the Director o:``=° Community Development and Services Division 400 Osgood Street ,.e'•%' �* North Andover, Massachusetts 01845 'ss�c►a,${` Telephone(978)688-9531 Division Director Fax(978)688-9542 ileicli Griffin NOTICE OF DECISION Any appeal shall be filed. within(20) days after the date of filing of the notice Date: December 22, 2004 in the office of the Town Clerk. Date of First Hearing: October 5, 2004 Decision: December 21, 2004 Petition o£ H.David& Alyson Fournier 15 Timber Lane North Andover,MA 01845 Premises affected: 15 Timber Lane,North Andover,MA 01845 Map 64, Lot 38. Referring to the above petition for a Watershed Special Permit. Te application was noticed and reviewed in accordance with the procedures for approval described.in Sections 4.136 and 10.3 of the Town of North Andover Zoning Bylaw and MGL Chapter 40-A. Section 11. So as to allow: for the applicant to demolish an existing dwelling and the construction of a new dwelling and inground pool. At a public hearing given on December 21, 2004, upon motion made by Felipe Schwarz and 2°d by Richard Nardella,the Board voted to allow the petitioner to withdraw without oreiudice as the petitioner is researching the possibility of purchasing the portion of circular,town owned right-of-way abutting his property. The purchase of this property will be subject to approval at the spring 2005 town meeting. Vote was unanimous 4-0. Signed: AlbertoAngl es hairman r. George White,Vice Chairman Felipe Schwarz, Clerk �- John Simons ' Richard Nardella James Phinney a mi/WatershedSPI STimlerLane 130ARD OF APPEALS 688-9541 BUILDING 688-9545 CONSERVATION 688-9530 HEALTH 6880540 PLANNING 688-9535 NOU-15-2004 om:CAMMETT ENGINEERING 978 388 0428 To:978688%42 P.2,2 + MMET'T s Consulting Engineers NOV I 5W Surveyors Landscape Architects Municipal Planners ,.�.rr.. i.s..- �..r.ra��.r..�.r...�..�..r.r Mr)P'7 W A4!.9=1i"n - PLANNING November '15, 2004 Town of North Andover Offiice of the Planning Depwiment 27 Charles Street ` North Andover, Ma.01$45 _s RE: Special P , Dear Board Members. On behalf ot'our client. Mr. 14. David Fournier,we are requesting�� �blic hearing to the next meeting date. If there are any questions regarding this request,please contact our office. 01 o Sincerely, W. C. Caron t Engilleering,Inc. tom" Lec Thibodcau, P.E. Ti11v:M\W�nwt�r�tl2tk)3�01tr5G11cttcr�1'tltivwN %Coniiwin4ckc4umstM2 W.C.Cnmamtt Enonwring 297 Elm Strcot•P.O.Box 329•A11WWry,MA 01913,078)3W2157•FAX(978)38"28 r i IL Massachusetts Department of Environmental Protection Bureau of Resource Protection -Wetlands DEP File Number: WPA Form 4B - Order of Resource Area Delineation 242-1225 Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 Provided by DEP A. General Information Important: When filling out From: forms on the North Andover computer, use Conservation Commission only the tab key to move This Issuance is for(check one): your cursor- do not use the return key. ® Order of Resource Area Delineation ❑ Amended Order of Resource Area Delineation To: Applicant: Property Owner(if different from applicant): David Fournier Same Name Name 15 Timber Lane Mailing Address Mailing Address North Andover MA. 01845 , CitylTown State Zip Code Cityrown State Zip Code 1. Project Location: 15 Timber Lane North Andover Street Address Cityrrown Map 64 Parcel 38 Assessors Map/Plat Number Parcel/Lot Number 2. Title and Date(or Revised Date if applicable)of Final Plans and Other Documents: Abbreviated Notice of Resource Area Delineation( Report) October 2003 Title Date Abbreviated Notice of Resource Area Delineation( Plan) 7/17/03 final Title revised 1/28/04 Title Date 3. Dates: 10/30/03 1/28/04 1/29/04 Date Notice of Intent Filed Date Public Nearing Closed Date of Issuance wpaform4b.doc•rev,12/15/00 Page 1 of 3 ILIMassachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands DEP File"umber: WPA Form 4B — Order of Resource Area Delineation 242-1225 Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 Provided by DEP B. Order of Delineation The Conservation Commission has determined the following(check whichever is applicable): ® Accurate: The boundaries described on the referenced plan(s)above and in the Abbreviated Notice of Resource Area Delineation are accurately drawn for the following resource area(s): ® Bordering Vegetated Wetlands ❑ Other Resource Area(s), specifically: only wetland flags A2, A3,A4, A5, A11, Al2,A13,A14. ❑ Modified: The boundaries described on the plan(s) referenced above, as modified by the Conservation Commission from the plans contained in the Abbreviated Notice of Resource Area Delineation, are accurately drawn from the following resource area(s): ❑ Bordering Vegetated Wetlands ❑ Other Resource Area(s), specifically: ® Inaccurate: The boundaries described on the referenced plan(s)and in the Abbreviated Notice of Resource Area Delineation were found to be inaccurate and cannot be confirmed for the following resource area(s): ® Bordering Vegetated Wetlands ❑ Other Resource Area(s), specifically: Wetland Flags Al, A6, A7, A8,A9, A10 are not Approved. The boundaries were determined to be inaccurate because: Flags located upon Abutter's Property without their Authorization and the applicant was not successful on obtaining their Authorization. wpaform4b.doc•rev.12115/00 Page 2 of 3 Massachusetts Department of Environmental Protection r Bureau of Resource Protection - Wetlands DEP File"umber: }� WPA Form 4B -- Order of Resource Area Delineation 242-1225 1 \ Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 Provided by DEP B. Order of Delineation (cont.) This Order of Resource Area Delineation determines the boundaries of those resource areas noted above and is binding as to all decisions rendered pursuant to the Massachusetts Wetlands Protection Act (M.G.L. c.131, §40)and its regulations(310 CMR 10.00) regarding such boundaries. This Order does not, however, determine the boundaries of any resource area or Buffer Zone to any resource area not specifically noted above, regardless of whether such boundaries are contained on the plans attached to this Order or to the Abbreviated Notice of Resource Area Delineation. This Or r must be signed by a majority of the Conservation Commission. The Order must be sent by certifie mor hand delivered to the applicant. A c so must be mailed or hand livere Jrat th s m ime to the appropriate DEP Regional Office a Appendix A) Signa res: 1 10 This Order is valid for three years from the date of issuance. This Order is issued to the applicant and the property owner(if different)as follows: ❑ by hand delivery on dby certified mail, return receipt requested on Date Date )Lai AY C. Appeals The applicant, the owner, any person aggrieved by this Order, any owner of land abutting the land subject to this Order, or any ten residents of the city or town in which such land is located, are hereby notified of their right to request the appropriate DEP Regional Office(see Appendix A)to issue a Superseding Order of Resource Area Delineation. The request must be made by certified mail or hand delivery to the Department,with the appropriate filing fee and a completed Appendix E: Request for Departmental Action Fee Transmittal Form, as provided in 310 CMR 10.03(7)within ten business days from the date of issuance of this Order. A copy of the request shall at the same time be sent by certified mail or hand delivery to the Conservation Commission and to the applicant, if he/she is not the appellant. The request shall state clearly and concisely the objections to the Order which is being appealed and how the Order does not contribute to the protection of the interests identified in the Massachusetts Wetlands Protection Act, (M.G.L. c. 131, §40)and is inconsistent with the wetlands regulations(310 CMR 10.00). To the extent that the Order is based on a municipal bylaw or ordinance, and not on the Massachusetts Wetlands Protection Actor regulations, the Department of Environmental Protection has no appellate jurisdiction. wpaform4b.doc•rev.12/15/00 Page 3 of 3 Massachusetts Department of Environmental Protection -- Bureau of Resource Protection - Wetlands WPA Appendix E — Request for Departmental Action Fee Transmittal Form Massachusetts Wetlands Protection Act M.G.L..c. 131, §40 A. Request Information Important: When filling out 1. Person or party making request(if appropriate, name the citizen group's representative): forms on the computer, use only the tab Name key to move your cursor- Mailing Address do not use the return key. City/Town State Zip Code r� Phone Number Fax Number(if applicable) Project Location 2nrn Mailing Address Cityrrown State Zip Code 2. Applicant(as shown on Notice of Intent(Form 3),Abbreviated Notice of Resource Area Delineatioh (Form 4A); or Request for Determination of Applicability (Form 1)): Y Name Mailing Address City/Town State Zip Code Phone Number Fax Number(if applicable) 3. DEP File Number: 242-1225 B. Instructions 1. When the Departmental action request is for(check one): ❑ Superseding Order of Conditions ❑ Superseding Determination of Applicability ❑ Superseding Order of Resource Area Delineation Send this form and check or money order for$50.00, payable to the Commonwealth of Massachusetts to: Department of Environmental Protection Box 4062 Boston, MA 02211 Wpaform4b.doc.Appendix E•rev.2/00 Page 1 of 2 Massachusetts Department of Environmental Protection Bureau of Resource Protection -Wetlands WPA Appendix E — Request for Departmental Action Fee Transmittal Form Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 B. Instructions (cont.) 2. On a separate sheet attached to this form, state clearly and concisely the objections to the Determination or Order which is being appealed. To the extent that the Determination or Order is based on a municipal bylaw, and not on the Massachusetts Wetlands Protection Act or regulations, the Department has no appellate jurisdiction. 3. Send a copy of this form and a copy of the check or money order with the Request for a Superseding Determination or Order by certified mail or hand delivery to the appropriate DEP Regional Office (see Appendix A). 4. A copy of the request shall at the same time be sent by certified mail or hand delivery to the Conservation Commission and to the applicant, if he/she is not the appellant. Wpaform4b.doc•Appendix E•rev.2100 Page 2 of 2 p f titG� +}L1� t r? . so ' WATERSHED SPECIAL PERMIT APPLICATION H. David Fournier 15 Timber Lane North Andover,Ma. 01845 ' Prepared By: W. C. Cammett Engineering,Inc. 297 Elm Street ' Amesbury, Ma. 01913 Job#: 03056 ' TABLE OF CONTENTS ' 0 FORMS & MEMOS ' 0 CERTIFIED LIST OF ABUTTERS • DRAINAGE ANALYSIS Town of North Andover Planning Board Application for Watershed Special Permit Please type or print clearly. I. Petitioner. H.David and Alyson Fournier ' Petitioner's Address: 15 Timber Lane,North Andover,Ma.01845 ' Telephone number: 978-683-2771 2. Owners of the Land: H.David Fournier ' Address; 15 Timber Lane,North Andover,Ma.01845 Number of years of ownership: 14 Years Year lot was created: 1963 ' 4. Is the lot currently on septic or sewer? Sewer If on sewer,please provide date the sewer connection was completed: 1994 5. Description of Proposed Project: Applicant proposes the demolition of an existing single family ' dwelling and the construction of a new single family dwelling and in ground pool. 6. Description of Premises: Existing 1.32 t acre,partially wooded lot with a single family dwelling, garage and driveway. The lot is serviced by Town water and sewer. ' 7. Address of Property Being Affected 15 Timber Lane Zoning District: Residence I ' Assessors: Map: 64 Lot# 38 Registry of Deeds; Book#: 2990 Page#: 341 8. Existing Lot: Lot Area(Sq.Ft) 57,500 f BuildingHeight <35' Street Frontage: 549A Side Setbacks: Front Setback: 58.6' Rear Setback: 52.6' Floor Area Ratio: NIA Lot Coverage: ' 9. Proposed Lot(if applicable): Lot Area(Sq.Ft) 57,500 Building Height <35' ' Street Frontage: 549.4 Side Setbacks: 86.2 Front Setback: 31.2 Rear Setback: 103.7 Floor Area Ratio: Lot Coverage: j ' 10. Required Lot(as required by Zoning Bylaw): Lot Area(Sq. Ft) 87,120 sf Building Height 35 ft. Street Frontage: 173 ft 30 ft. Side Setbacks: 30 ft. Front Setback: Rear Setback: 30 ft. ' Floor Area Ratio: N/A— Lot Coverage: NIA 11. Existing Building(if applicable): Ground Floor(Sq.Ft) 1748 sf(fin) #of Floors: 2 +Finished Basement Total Sq.Ft. 2324 st Height: �Br— Use; Residential Type of Construction ' 12. Proposed Building: Residential Single Family . Ground Floor(Sq.Ft.) 2580 sf(fin) #of Floors: 2 Total Sq.Ft. 8460 s (tin) Height: <3 Use: Residential Type of Construction Residential Single Family 13. Has there been a previous application for a Special Permit from the Planning Board on these premises? No If so,when and f r what type of construction? ' 14. Section of Zoning Bylaw that Special Permit is Being Requested 4.136 l�. Petitioner and Landowner signature(s): ' Every application for a Special Permit shall be made on this form which is the official form of the Planning Board. Every application shall be filed with the Town Clerk's office.It shall be the responsibility of the petitioner to furnish all supporting documentation with this application. ' The dated copy of this application received by the Town Clerk or Planning Office does not absolve the applicant from this responsibility.The petitioner shall be responsible for all expenses for filing and legal notification.Failure to comply with applicatio equirements,as cited herein and in the Planning Board Rules and Regulations may result in ismal by the Planning Board of this application as incomplete. Petitioner's Signature: Print or type name here: w l Owner's Signature: Print or type name here; 16. Please list title of plans and documents you will be attaching to this application. Existing Conditions Sheet 1 of 2, Site Plan Sheet 2 of 2 Written Supplemental,Drainage Analysis II r MEMORANDUM TO: North Andover Planning Board ' FROM: W.C. Cammett Engineering,Inc. Lee Thibodeau,P.E RE: Watershed Special Permit Written Supplemental Information DATE: August 25,2004 Information listed below is intended to address the six specific requirements for obtaining a ' watershed special permit. ' 1. I. Lee Thibodeau, P.E., certify that there will not be any significant degradation of the quality or quantity of water in or entering Lake Cochichewick. Stormwater associated with the proposed dwelling will be infiltrated on-site, thus reducing ' stonnwater runoff from existing conditions to the abutting wetlands. 2. The property lies entirely within the Non-Disturbance and Non-Discharge Buffer Zones. Currently, much of the existing dwelling, deck, shed, and patio area are located within the Non-Disturbance zone. All existing structures and impervious area currently on the site are to be demolished and a new structure is being proposed ' completely outside the Non-Disturbance zone. A swimming pool is being proposed in the Non-Disturbance zone, however, impervious area in the Non-Disturbance zone is being significantly reduced. ' 3. The project is a single family dwelling using town sewer. There are no disposal systems of any kind in use on the property. 4. Concentrations of Nitrogen in the groundwater will not be significantly affected by the proposal. The proposed use of the property is the same as existing and the proposed ' dwelling will be connected to town sewer using the existing sewer service connection and as part of the approval process,any fertilizer application will be limited to the use of low nitrogen fertilizer. S. Nitrogen. phosphorus and other relevant chemicals at property boundaries will not be b p p p P Y significantly affected. See point#4 pertaining to fertilizer. 6. Additional supporting material will be supplied by W.C. Cammett Engineering if the ' SPGA deems it necessary. 1 "fitle:M\Winword\2003\03056\Memos\Written Supplemental.doe t t Abutter to Abutter( ) Building Dept. ( ) Conservation ( ) Zoning ( ) Town of North Andover Abufters Listing REQUIREMENT. MGL 40A,Section 11 states in part"Parties in Interest as used in this chapter shall mean the petitioner, abutters,owners of land directly oppositeon any.public or private way,and abutters to abutters within three hundred(300)feet of the property line of the petitioner as they appear on the most recent applicable tax list,not withstanding that the land of any such owner is located in another city,or town,the planning ' board of the city or town,and the planning.board of.every abutting city or town." Subject Prc ertyr ' MAP PARCEL Name . Address 64 38 David Fournier 15 Timber Lane No Andover, Ma 01845 ' Abutters Properties , Mao Parcel Name Address ' 64 2 Connie Yee 1.37 Brentwood Cir No Andover,MA 01845 64 3 Eugenia Ferrante 171 Brer twook Cir No Andover, MA 01845 64 36 Richard Blain 123 Brentwood Cir No Andover,MA 0184 64 37 Alden Lincoln 135 Brentwood Cir No Andover,MA 01845 64 39 Timber Ln Realty! 30 Timber Lane No Andover, MA 01845 64 4C William Duffy 22 Timber Lane . No Andover,MA 01845 -64 41 Edward Brown 6 Timber Lane No Andover, MA 01845 64 42 Jeffrey Ferrante 171 Brentwook Cir No Andover, MA 01845 64 43 Margot Turano 191 Brentwood Cir No Andover, MA 01845 54 54 Barbara Cataudella 200 Brentwood cir No Andover, MA 0'1845 54 55 John Korona- 178 Brentwood Cir No Andover, MA 0184:, 64 56 Daniel Carroll 150 Brentwood Cir No Andover, MA 01845 64 57 James Barbara 132 Brentwood Cir No Andover, MA 01845 ' 64 58 Jacob Steigerwald 120 Brentwood Cir No Andover, MA 01845 104-C 14 Martin Smolak 315 So Bradford St No Andover,.MA 01845 104-0 77 Kevin Merii 172 Bridle Path No Andover, MA 01845 104-0 78 B & R Construction 38 Mor7te'iro Way No Andover,MA 01845 104-0 79 132 Academy Trust 206.Bridle Path No Andover, MA 01845 104-0 80 CLY-'KWY Realty Trust 224 Bridle Path No Andover, MA 01845 104-C 84 Gregory..Andrusin 225 Bridle Path No Andover,MA 01845 104-C 85 Kathieen•Ercolini 195 Bridle Path No Andover, MA 018.45 104-C 86 Gabrielle Schmitt 165 Bridle Path No Andover,MA 01845 104-C 87 Thomas Mitro 145 Bridle Path No Andover, MA 01845 Date Page _� Of ISI Corti d b Rnrd X1p eas North Andover .ry . This certifies that the naives appearing on the A $e d of Assessor N AildoveF records of the Assessors ffice as of Certified 0 by Date b it Drainage Analysis 1 1 1 Prepared For: iH. David Fournier 15 Timber Lane - Amesbury, MA W.C. Cammett Engineering, Inc. 297 Elm Street - Amesbury, MA Date: August 2004 1 II ' SECTION CONTENTS Design Objectives/Methodology page 3 r Appendix Appendix A Infiltration Stormwater Calculations Appendix B Culvert Analysis 1 W.C. Cammett Engineering, Inc. 2 M:lwinword1200310305611StormwaterAnalysis&MitigationlRooftop Infiltration Analysis.doc DESIGN OBJECTIVES / METHODOLOGY 1 STORMWATER INFILTRATION SYSTEM ' The proposed rooftop infiltration system was designed to accommodate runoff volumes resulting from a 10 year design storm. The infiltration system consists of 16 SC-310 Stormtech plastic chambers. The proposed dwelling's roof drain system is tied into the ' infiltration chambers with 6" & 4" PVC pipe. The roof drain systems have an overflow outlet for larger storm events. See the accompanying design plans and appendicies for a more detailed description of the infiltration chamber location and construction. RUNOFF QUANTIFICATION A drainage analysis was performed using post-development site criteria to estimate the runoff i generated from the proposed rooftop. The stormwater runoff rate was calculated for the 10 year design storm. The storage data for the infiltration chambers was calculated for a single unit and then multiplied by the number of units required to mitigate the runoff. A percolation rate of 10 min/in was utilized based on soil test results conducted within the area of the proposed infiltration area. Storage information is based on data provided by the manufacturer. The void volume within stone surrounding the proposed chambers was assumed to be 40%. The exfiltration rate was applied to the chambers over incremental surface areas. Volumes were then calculated using conic sections. ' A drainage analysis was performed using post-development site criteria to estimate the runoff generated tributary to the proposed 12" PVC culvert. The stormwater runoff rate was ' calculated for the 2,10, & 100 year design storms. The analysis was performed using HydroCADTM, a computerized stormwater modeling system that combines SCS hydrology techniques with standard hydraulic equations. A minimum time of concentration (Tc) of 10 minutes was incorporated into the calculations to account for storm fluctuation. W.C. Cammett Engineering, Inc. M:lwinwordk2003O3O5611StormwaterAnalysis&MitigationtRooftop Infiltration Analysis.doc � r Appendix A Rooftop Infiltration Stormwater Caculation i i 1S Roof Area INF Rooftop Infiltrator 16-S C 310 ��- �nk Drainage Diagram for Roof Infiltration lReach� Pon Prepared by W.C. Cammett Engineering, Inc. 8/25/2004 - --- FlydroCAD®7.00 s/n 000684 © 1986-2003 Applied Microcomputer Systems Roof Infiltration Type 111 24-hr 10 Yr. Storm Rainfall=4.50" ' Prepared by W.C. Cammett Engineering, Inc. Page 1 HydroCADO 7.00 s/n 000684 © 1986-2003 Applied Microcomputer Systems 8/25/2004 Time span=0.00-24.00 hrs, dt=0.05 hrs, 481 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method Pond routing by Stor-Ind method Subcatchment IS: Roof Area Runoff Area=3,300 sf Runoff Depth=4.26" Tc=10.0 min CN=98 Runoff=0.29 cfs 0.027 of Pond INF: Rooftop Infiltrator(16-SC 310) Peak Elev=182.23' Storage=350 cf Inflow=0.29 cfs 0.027 of Outflow=0.06 cfs 0.027 of Total Runoff Area = 0.076 ac Runoff Volume = 0.027 of Average Runoff Depth = 4.26" Roof Infiltration Type 111 24-hr 10 Yr. Storm Rainfall=4.50" ! Prepared by W.C. Cammett Engineering, Inca Page 2 HydroCADO 7:00 s/n 000684 © 1986-2003 Applied Microcomputer Systems 8/25/2004 Subcatchment IS: Roof Area Runoff = 0.29 cfs @ 12.14 hrs, Volume= 0.027 af, Depth= 4.26" ' Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs Type III 24-hr 10 Yr. Storm Rainfall=4.50" ' Area (sf) CN Description 3,300 98 Roof ! Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, ! Pond INF: Rooftop Infiltrator (16-SC 310 ' Inflow Area 0.076 ac, inflow Depth = 4.26" for 10 Yr. Storm event inflow 0.29 cfs @ 12.14 hrs, Volume= 0.027 of Outflow = 0.06 cfs @ 12.59 hrs, Volume= 0.027 af, Atten= 78%, Lag= 27.2 min ' Discarded = 0.06 cfs @ 12.59 hrs, Volume= 0.027 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs ! Peak Elev= 182.23' @ 12.59 hrs Surf.Area= 218 sf Storage= 350 cf Plug-Flow detention time= 42.1 min calculated for 0.027 of(100% of inflow) Center-of-Mass det. time= 41.9 min (794.6 -752.7 ) ! # Invert Avail.Storage Storage Description 1 180.70' 455 cf Custom Stage Data (Conic)Listed below ' Elevation Surf.Area Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (cubic-feet) (cubic-feet) (sq-ft) 180.70 160 0 0 160 181.20 160 80 80 182 ' 181.30 312 23 103 335 181.50 284 60 163 365 182.00 268 138 301 399 ' 182.50 160 106 407 510 182.80 160 48 455 523 ! # Routing invert Outlet Devices 1 Discarded 0.00' 0.008333 fpm Exfiltration over entire Wetted area ' Discarded OutFlow Max=0.06 cfs @ 12.59 hrs HW=182.23' (Free Discharge) L1=Exfiltration (Exfiltration Controls 0.06 cfs) i 1 1 Oisis , i1\ Culvert Tributary z2P 1211 culvert 1 1 � 1 Subcat, Reach n Link Drainage Diagram for Culvert Analysis l PoPrepared by W.C.Cammett Engineering, Inc. 8/27/2004 t i HydroCAD®7.00 stn 000684 ©1986-2003 Applied Microcomputer Systems Culvert Analysis Type 11124-hr 2 Yr. Storm Rainfall=3.10" Prepared by W.C. Cammett Engineering, Inc. Page 2 HydroCADO 7.00 s/n 000684 © 1986-2003 Applied Microcomputer Systems 8/27/2004 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points II ' _ Runoff by SCS TR 20 method, UH-= SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1S: Culvert Tributary Runoff Area=0.480 ac Runoff Depth=0.99" Tc=10.0 min CN=76 Runoff=0.50 cfs 0.040 of Pond 2P: 12" culvert Peak Elev=180.03' Storage=271 cf lnflow=0.50 cfs 0.040 of 12.0"x 50.0' Culvert Outflow=0.34 cfs 0.039 of Total Runoff Area = 0.480 ac Runoff Volume = 0.040 of Average Runoff Depth = 0.99" I, ' Culvert Analysis Type Ill 24-hr 2 Yr. Storm Rainfall=3.10" Prepared by W.C. Cammett Engineering, Inc. Page 3 HydroCADO 7.00 s/n 000684 © 1986-2003 Applied Microcomputer Systems 8/27/2004 ' Subcatchment 1S: Culvert Tributary Runoff = 0.50 cfs @ 12.15 hrs, Volume= 0.040 af, Depth= 0.99" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type III 24-hr 2 Yr. Storm Rainfall=3.10" Area (ac) CN Description 0.120 98 Impervious 0.360 69 50-75% Grass cover, Fair, HSG B 0.480 76 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Pond 2P: 12" culvert Inflow Area = C.480 ac, Inflow Depth = 0.99" for 2 Yr. Storm event Infiow _ C.50 cfs @ 12.15 hrs, Volume= 0.040 of Outflow 0.34 cfs @ 12.30 hrs, Volume= 0.039 af, Atten= 32%, Lag= 9.0 min Primary = C_34 cfs @ 12.30 hrs, Volume= 0.039 of ' Rout nc bt Sto--in-- -method. Time Span= 5.00-20.00 hrs, dt= 0.05 hrs heart '80.C3 @ 12.30 hrs Surf.Area= 1,496 sf Storage= 271 cf Piug-Flow oeiention nme= 23.5 min calculated for 0.038 of(97% of inflow) 1 Center-of-Mass cies. time= 14.4 min ( 832.3 817.9 ) # Invert Avail.Storage Storage Description 1 179.70' 1,360 cf Custom Stage Data (PrismaticJListed below Elevation Surf.Area lnc.Store Cum.Store ' (feet) (sq-ft) (cubic-feet) (cubic-feet) 179.70 0 0 0 180.00 1,400 210 210 180.50 3,200 1,150 1,360 ' # ou in Invert Outlet Devices R t q 1 Primary 179.70' 12.0" x 50.0' long Culvert CPP, projecting, no headwall, Ke= 0.900 Outlet Invert= 178.70' S= 0.0200 '/' n= 0.011 Cc= 0.900 Primary OutFlow Max=0.34 cfs @ 12.30 hrs HW=180.03' (Free Discharge) t--1=Culvert (Inlet Controls 0.34 cfs @ 1.5 fps) r Culvert Analysis Type 111 24-hr 10 Yr. Storm Rainfall=4.50" ' Prepared by W.C. Cammett Engineering, Inc. Page 4 H droCAD®7.00 s/n 000684 © 1986-2003 Applied Microcomputer Systems 8/27/2004 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method ' Subcatchment 1S: Culvert Tributary Runoff Area=0.480 ac Runoff Depth=1.97" Tc=10.0 min CN=76 Runoff=1.03 cfs 0.079 of Pond 2P: 12" culvert Peak Elev=180.16' Storage=577 cf Inflow=1.03 cfs 0.079 of 12.0" x 50.0' Culvert Outflow=0.64 cfs 0.078 of rTotal Runoff Area = 0.480 ac Runoff Volume = 0.079 of Average Runoff Depth = 1.97" I ' Culvert Analysis Type Ill 24-hr 10 Yr. Storm Rainfall=4.50" ' Prepared by W.C. Cammett Engineering, Inc. Page 5 HydroCADO 7.00 s/n 000684 © 1986-2003 Applied Microcomputer Systems 8/27/2004 Subcatchment 1S: Culvert Tributary Runoff 1.03 cfs @ 12.15 hrs, Volume= 0.079 af, Depth= 1.97" ' Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type III 24-hr 10 Yr. Storm Rainfall=4.50" Area (ac) CN Description 0.120 98 Impervious 0.360 69 50-75% Grass cover, Fair, HSG B 0.480 76 Weighted Average Tc Length Slope Velocity Capacity Description ' (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Pond 2P: 12" culvert Inflow Area = CLAM ac, Inflow Depth = 1.97" for 10 Yr. Storm event Inflow _ '.03 cfs @ 12.15 hrs, Volume= 0.079 of Outflow 0.64 cfs @ 12.31 hrs, Volume= 0.078 af, Atten= 38%, Lag= 10.0 min Primary C.64 cfs @ 12.31 hrs, Volume= 0.078 of Routina br S--o-i7c method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Eiev= ;K;.1 c @ 12.31 hrs Surf.Area= 1,975 sf Storage= 577 cf Plug-Floe o=tentior time=19.7 min calculated for 0.077 of(98% of inflow) Center-o=-Mass cies. time= 13.4 min ( 816.0- 802.6 ) # Invert Avail.Storage Storage Description 1 179.70' 1,360 cf Custom Stage Data (Prismatic�isted below Elevation Surf.Area Inc.Store Cum.Store ' (feet) (sq-ft) (cubic-feet) (cubic-feet) 179.70 0 0 0 180.00 1,400 210 210 180.50 3,200 1,150 1,360 ' # Routing Invert Outlet Devices 1 Primary 179.70' 12.0" x 50.0' long Culvert CPP, projecting, no headwall, Ke= 0.900 ' Outlet Invert= 178.70' S= 0.0200 '/' n= 0.011 Cc= 0.900 Primary OutFlow Max=0.64 cfs @ 12.31 hrs HW=180.16' (Free Discharge) t--1=Culvert (Inlet Controls 0.64 cfs @ 1.8 fps) 1 Culvert Analysis Type 111 24-hr 900 Yr. Storm Rainfall=6.40" ' Prepared by W.C. Cammett Engineering, Inc. Page 6 HydroCADO 7.00 s/n 000684 © 1986-2003 Applied Microcomputer Systems 8/27/2004 r Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method rSubcatchment 1S: Culvert Tributary Runoff Area=0.480 ac Runoff Depth=3.48" Tc=10.0 min CN=76 Runoff=1.81 cfs 0.139 of ' Pond 2P: 12" culvert Peak Elev=180.35' Storage=1,011 cf Inflow=1.81 cfs 0.139 of 12.0"x 50.0' Culvert Outflow=1.17 cfs 0.137 of rTotal Runoff Area = 0.480 ac Runoff Volume = 0.139 of Average Runoff Depth = 3.48" 1 1 r r r r r r r � r r r Culvert Analysis Type 111 24-hr 100 Yr. Storm Rainfall=6.40" Prepared by W.C. Cammett Engineering, Inc. Page 7 HydroCAD® 7.00 s/n 000684 © 1986-2003 Applied Microcomputer Systems 8/27/2004 Subcatchment 1S: Culvert Tributary Runoff = 1.81 cfs @ 12.14 hrs, Volume= 0.139 af, Depth= 3.48" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type III 24-hr 100 Yr. Storm Rainfall=6.40" ' Area (ac) CN Description 0.120 98 Impervious 0.360 69 50-75% Grass cover, Fair, HSG B 0.480 76 Weighted Average Tc Length Slope Velocity Capacity Description ' (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, 1 Pond 2P: 12" culvert Inflow Area = 0.480 ac, Inflow Depth = 3.48" for 100 Yr. Storm event Inflow _ 1.81 cfs @ 12.14 hrs, Volume= 0.139 of Outflow 1.17 cfs @ 12.29 hrs, Volume= 0.137 af, Aften= 36%, Lag= 8.9 min Primary = 1.17 cfs @ 12.29 hrs, Volume= 0.137 of ' Routing by Stor-Ind method:Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 180.35'@ 12.29 hrs Surf.Area= 2,654 sf Storage= 1,011 cf Plug-Flow detention time= 17.5 min calculated for 0.137 of(98% of inflow) tCenter-of-Mass det. time= 12.9 min ( 802.6- 789.7) # Invert Avail.Storage Storage Description 1 179.70' 1,360 cf Custom Stage Data (Prismatic�isted below Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) t179.70 0 0 0 180.00 1,400 210 210 180.50 3,200 1,150 1,360 # Routing Invert Outlet Devices 1 Primary 179.70' 12.0" x 50.0' long Culvert CPP, projecting,no headwall, Ke= 0.900 Outlet Invert= 178.70' S 0.0200 'r n= 0.011 Cc= 0.900 Primary OutFlow Max=1.16 cfs @ 12.29 hrs HW=180.35' (Free Discharge) ' L1=Culvert (Inlet Controls 1.16 cfs @ 2.2 fps) i � 1 o. 3 Great pond RFU a S�^ n 186 \\ ,i�, Qo fro IL V��°� ��'°� �> �0 1 N/F ,fir f� 9yoo 1&7 - -- \ 1 CONNIE YEE s� �I � MAP 64 PARCEL 2 WF A8, � LOCUS 1 IL 00 ��� ''�' AL A FOR REGISTRY USE ONLY Q.��� I *.� "` �b v v •-CWF A10 Timber Lane y I \, dr WF` A7 • • • �. • ' i' ��-- 7 ' • .. .�,�.- • ' • \• CAM_M E-=TT 188 � ��� WF Al A- WFAX �.. • . - \\ I ` ` WFA9 \ '• ��O ''� r - .r IL 189 WF A2 •1 WF A3 WF 4 WF A5 4 / \341.54 ", r— ---�- ❑ 13 ------------------- / All \� E=NG1NEER1NG 190 O�1\\ \\ \\ \ ,'`5�` �/ 184 Y �- _ _�(�� vti • • . _ 1 ` WF A14 297 ELM STREET, AMESBURY, MA. SATELLITES` \ WF Al2 fI /JX �3 \ \ \ -��L ' =" DISH \\ \ =' nf{ ` \ ' �� Phone: (978) 388-2157 Fax: (978) 388-0428 1f� nyht7}—� \ \ \ 1 ` �;�ai't �i %{l( \ \ i i"r!i-'i-F --` --- --_ \ \ \ w CONSULTING ENGINEERS& 11APLE \\14" t,.4 --- —\ — — I A13 V4 LAND SURVEYORS SINCE 1975 N \, \�- = \ \ I ` Visit us on the WEB at www.cammelf.com � � �1�92 c \ / 4 IBM 10A v i Sheet Title: j 18" MAPLE XBE COMPLETELY . .l , 10 APLET 64DEMOLISHED INCLUDING EXISTING FEK�N EXISTING TING CONDITIONSELE =191.18 19 %WALKS AND DECKS G HOUSE TO BEfoPARCEL 33 REMOVED & DEMOLTION PLAN TING SHED 891.32 \ ACRES EXISp pp \ TO BE REMOVED pp P FvY, t qUF \ \ 12� c A.K / \ LIMI ',,OF 100' BUFFER ZONE \ p `s �t��•;`, \ \ \ \\,� d\ \� I \\ \ \ X868 F � d 0Op FCp K p& NON TURBANCE BUFFE� cpp p� C / a �' \ CpZONE . g6 p ooF�ST \ Project Title:,94 O p - 24.'( OAK � \ \ \\ 00 •s `� \ �� j Fx, _ _� �'a -�?` Ij, i{ \� i SINGLE FAMILY DWELLING ° � 15 Timber Lane r 1 g \�- 1 DEED REFERENCE: t � M North Andover„ � , ,;ns, Essex County TO. H. DAVID FOURNIER FROM: WILLIAM & JEAN L. MacCANNELL g \� \ J,� y \\` r Rick Q / 1. q�`1, �q,'` 179 DEED BOOK 2990 PAGE 341 \ tyq/h — — _.- — �' \� 1 i_ DATED: SEPTEMBER 1, 1989 MAP 64 LOT 38 y� _ 9 03-1 / " .i Applicants: PLAN REFERENCE: 1 \ � ,'�:�y� ►- ~ � � � / ���, ' ____ � \ �� - y . -- --- - - - DavidAly on DEFINITIVE PLAN IN NORTH ANDOVER, MASSACHUSETTS g — r \ 5 �i �� Fournier �`' ..` �' rr i� 181 SCALE: 1" = 60' DATED: AUG 19, 1963 �� S I\ /y \ ` - K `b'1,1�, r <,t< /�`b \ 13 0/ // \\'r'- l j \ J i BY ENGINEER GEORGE E. HAYES MELROSE, MA. \ /` / /\ '�� ��t :- �� �/ ,j _ AS SURVEYED FOR WO ODRIDGE TRUST 1 ? / ��,, a, �b0� TP 03® 9` J 182 15 Timber Lane -� 1 P i- North Andover TP 63-3 IBM 12A 183 Owner. MAG. NAX SET ZONING REQUIREMENTS 1a� - , `�_ `\`'S L`I, , 1 12" ASF \ \ \ ,- ' -- H. David Fournier \ �`� ELEV.=1 4.03 � \ \ \ �' 84 DISTRICT RESIDENCE 1 s v . � -• I ` '' �_ 15 Timber Lane , MIN LOT AREA 87,120 S T \ MIN LOT FRONTAGE 175 FT I '� LSO'64 North Andover "� �- \ \�%� MIN YARDS6 FRONT 30 FT 18 \ \ oX \ \ 1 184 SIDE 30 FT �� \ \ � � y .e � REVISION REAR 30 FT 18,3 NO. DATE DESCRIPTION BY NOTES 181 1.) THE LOCATIONS OF EXJS71NG UTILITIES ARE SHOWN IN AN APPROXIMATE WAY ONLY AND HAVE NOT , \ BEEN INDEPENDENTLY VERIFIED BY THE OWNER OR ITS REPRESENTATIVE THE CONTRACTOR SHALL \ / DETERMINE THE EXACT LOCATION OF ALL EXISTING U71LI71ES BEFORE COMMENCING WORK, AND AGREES � 6�T N/F TO BE FULLY RESPONSIBLE FOR ANY AND ALL � / �• �F�' - KATHLEEN E. ERCOLINI DAMAGES WHICH MIGHT BE OCCASIONED BY THE CONTRACTOR'S FAILURE TO EXACTLY LOCATE AND l S MAP 104C PARCEL 85 PRESERVE ANY AND ALL UTILITIES '��• IBM HYD. rh. Z VERTICAL DATUM IS NAVD 1988. ~" ait►� ori ? 82� ^°� BONNET BOLT •�r .,�� ����aA 2 6 \ W PUNCH MARK yG\' INSURANCE RATE MAP COMMUNITY-PANE! / WOODBURY ELEV.=181.32 � � 3.) FLOOD INSUR / NUMBER 250098 0010 B EFFECTIVE DATE. JUNE 15, 1983. > '°� �, , 178 CAM T Ask ZONE C AREAS OF MINIMA! FLOODING. (NO SHADING) I - 4. ENTIRE PROPERTY LIES WITHIN THE WATERSHED /177r� PROTECTION DISTRICT. '��� / S I` ►" l ` BF � 178 a 5. REMAINING AREA OF PROPERTY OUTSIDE 100' NON- ��g Date: DISTURBANCE BUFFER ZONE LIES WITHIN THE NON— DJSCHARGE BUFFER ZONE / �` PROD. MGR.: R. SMITH �'All � 1 � �`� 11� R. BROWN/5. IACERDA DESIGN: DRAWN: T. MEEHAN i I CHECKED: R. SMITH/ W. CAMMETT SCALE: 1 =20 S 1/3 DATE: 1/15/04 / FILE: k:1...1200310305G1 20 10 0 20 40 t T PLOT: DWG10305G5P.DWG TOLLFREE 1 888-DIG SAFE �1 19 S JOB#: 0305G (1-888-344-7233) 5 3 1 0 5 10 15 ME SHEET I of 2 Q NIF IL Great and ' ZONING REQUIREMENTS 187 CONNIE YEE -1I�. L k 1111 \ 'Po ROUE 13 DISTRICT RESIDENCE 1 \ MAP 64 PARCEL 2 I U11 �0 3 MIN LOT AREA 87,120 SF • _ �i► AS, r` WF A 10 � V MIN LOT FRONTAGE 175 FT 138 �y \ h , .lair' N� A7 • ,T-• • ' ' t �� 7 MIN YARDS I �' WF Al ''�' 11 L WF A6 . . - `-� • \ I I r WF A _ FRONT 30 FT \ \ \ � ' .X �� \ I I I \ �0 ` ,, o D a SIDE 30 FT I \ '` = o m REAR 30 FT 18g \ ( \ \ I \ = rn ° y �f� \� \ \ WOODED WF A2 I t- WF A3 WF A4 WF A5 _ , � / 341.54' � O o 18" OAK -- - o ❑ ❑ \ NOODED •X. ! o gyp` = AL g0 �O ^ \ � _ 1 _ WF A14 �� PLAN REFERENCE: � ---. , \` �.� `, � \ `� , , ,,a�� 84-- � - - -\(� „ �� � wF Al2\ � - f,� ,p vlr " �1 SA TEL 2� .OAK � »\n �\\ � \ ` g p h \ 10' MAPLE " �RIPLE \C 12' MAPLE 18" OAK PAT10 TO DISH 20 LOCUS DEFINITIVE PLAN IN NORTH ANDOVER, MASSACHUSETTS 191 -� \ 0 10" MAPLE 9" MAPLE \ 14 MAPLE --- _ TEC 5 3 SLOPE TOWARDS \ \\ \ \ " _ P - -\- - - - _ _ _ _ _ POOL AT I% oo. Timber Lane SCALE: 1 = 60 DATED: AUG. 19, 1963 - r, \ \ I 1 -� n \ 20 OAK\ \ - \ - A13 04 BY ENGINEER GEORGE E HAYES MELROSE, MA. �C{�\ \ I BUILDING � \ \�' \ \ \ 0 I �+ AS SURVEYED FOR WOODRIDGE TRUST 1g 10t ASH 1 I ,. \ PROPO \20 AK \ 1 I I Ln LOCUS 2 QJ \ \ TBM 10A I I \ SETBACK i r r r •• ` � ,QED S ONE \ \ I 00 N FOR REGISTRY USE ONLY N.T.S. \\ \ \ MAG. NAILZT ' ' I _t.5 - r r r .. ., ,� Mw T _ - - SOUGHT IRb , \ o \\ \\ N00 CAM M T'T30 C�1K 18" MAPLE I r �.. � � o \ DE's �, Q, DEED REFERENCE. ,93 \ 10 MAPLE y I , �� �s� ®L _ _ , \ �O OAK\ f \ o cn \ ELEI(-191.18 MAS 64 o24' I I / 0 N 0" OAK I 1 H ° _ .n n v ` TO: H. DAVID FOURNIER (1� \ \ 1 PARCEL 38 i F y O µms,.-` _FROM: WILLIAM & JEAN L. MacCANNE L \\ `"� \\ \ \ 1.321\AlCRES �� �i O O O�O O O O O cONc� PROPOSED CONCRETE P 110E . 185.6 / ° DEED BOOK 2990 PAGE 341 i F¢ ` \ t TWIN �� O O O O O O O O FTF, \ k DATED: SEPTEMBER 1, 1989 f s�� \ \ T2'\ OAK l \ / �"�, O O O Q C O O tfF�, _ - I \ \ \ I LIM�`OF 100 BUFFER ZONE O �, ,� O O C t \\C �� ' B N G 1 r"j E= N G MAP 64 LOT 38 - BUFFED/ PROP SED \ \ ZONA DISTURBANCE 0 F, ��� O fl SED / �',,\D%FENCING \ 297 ELM STREET, AMESBURY, MA. ) s� \ gOOFji t3 ,�� . \ \ LEGEND ��ce o I ��, \ �R,, Rq�F %,� sT o / } \ Phone. (978) 388-2157 Fax: (978) 388-0428 �A �0 \ I s \\ \� � � LO \ \ �O 8.82 % i�, Fcn �. f / 4" PVC\ `\ \ CONSULTING ENGINEERS& � \ i, .. 24"I OAK \ \ EXISTING PROPOSED FA o \ 'S� \\ \ \ \ Fk�s _ t� 4' OAK SCH 40 \ r \ I I \\ LAND SURVEYORS SINCE 1975 STONE WALL 9� \ f1J� \\ \ \� \ \ Figs • 8��� i ��/ ��-�- / 4• S-1.0% ` I I ' Visit us on the WEB at www.cammett.com 186x SPOT GRADEX00 ° "R PO D DECK � ROOF t EXISTING EDGE / P 0 DRAIN \ i / -,Igo 186 CONTOURS \� `F \\ OF DRIVEWAY FF=189.1E Sheet Title: 91� ` EXISTING CONTOURS �°,`� \ ` X18 - D r . PAVEMENT = �. 4 1 6 x ❑ CATCH BASIN \ - - - - `,y 30" OAK \ - w x r i�, �,/ . Y pV I J PAVER WALK -` *F c➢' 1 0 4" V��2,: SITE t► / yY_CLEAN ��' FIRE HYDRANT 1 9 M z / , .; 4, F NDA1� N VEff 1 179 C 24 OAK ' 2 O . Q yYro FD FOUNDATION DRAIN \ q�� ' ` ' 3 `� �� BUI G _ `_. .- -, AIN W E.P. Q F R PROPOSED ) \, I ,/ ►� PLAN EDGE OF PAVEMENT �` \,, O,t. ° \ t /, ' ' / - q•it l:, _ ` P=RAP U' -0 DRAIN LINE e; AGE - - - INV,---178.771 Fr�fs. MAIL BOX --' \ sl / V=1 MB �sg E FF 187.10. : 8s TF, 1 / - t! J i ,fes I S Ify 8 TEMPORARY BENCH MARK 9� A ` TBM \ Q{�WIlSPOU / 03-1 - . SIGN \ .,' / �T�� ,� .�_ Axa, � _ �,/: �.1 � :_ ! ,�: /'�",� .�- P�OB SED 9 R / Project Title: LSA LANDSCAPE AREA - - - \ DRIVE AY �, L A / 14� Or IN-182.55 O i TREE LINE 189 s I - �\ T y �o \ / 2 \ - 1 SINGLE FAMILY DWELLING S \ \ -_ ,��� : 22 OAK ,� / / \ 81 " � r� `, 4 '/ PT - 15 Timber Lane r 'h / 4 PVC q, / Q > o CHAIN LINK FENCE 1 \ SCH 40 ao TP 03-2 - ❑ ❑ w000 FENCE �a °' ,' �` W LSA ' �H i _ 182 North Andover a S v _ S=1. T<<<� OIL TESTS \\ F/IbRAIN/� �' LAK / / TP 03-3 '�` ��• ,•,�y WETLAND BOUNDARY F ��� I �� _ _ Essex County `"' � � 1 TBM 12A INV=179.7 � W A-2 WEILAND FLAG SOILS ON THE PROPERTY ARE MAPPED AS SUTTON SUB A A S \� \ 0 OAK I / MAG. NA / I 12" PVC 183 O SEWER MANHOLE )' �8? \ �_ LSA l 12' AS X ! SCH 40 MODERATELY WELL DRAINED, VERY STONY, FINE SANDY LOAM, \ i L=50' n" 1 pd WATER VALVE HYDROLOGIC GROUP 8. \ y� / �/ ELEV.=1;84.03 FVOODED \ - a Mi \ ` 184 D DRAINAGE LINE TP 03-1 EL. 181.0 S \ 1y ___ \ I I -2 HDh'E� \\ \ \ 0 -9 A FSL 10 YR 4/4 FRIABLE \ \ '� I VC MEMS A INFR TOR Applicants: S SEWER LINE " " \ L X0.64 1 , \ _ I SC 40 2 OFF S1'S 9 -24 B FSL 10YR 5/6 FRIABLE, 15% GRAVEL NOTES -- W WATER LINE 24"-60" C SL 25Y 5/4 FIRM IN PLACE, VARIABLE, 20% GRAV. 186 - S dy /I -< FlF \ S=1.8 STONE WOODED H. David & Alyson ENH ELECTRIC HANOHOLE ESH.W.T. ® 22' � , c3' WATER SHUT-OFF PERC. RA11=: 28 MIN/IN ® 41" I. OW RELEASE FERTILIZERS. NO PESTICIDE USE SHALL BE PON THE PROPERTY SHALL BE LOW ERMITTED. �� \\ \\ \ I Nl Fournier X 186.0 SPOT ELEVATION 1P 03-2 EL. 180.4 -s �9�/C, \� \ \ \ \ \ 183 OPM METAL POST \ \ 15 Timber Lane 0"-12"" FILL ---- 9 ---- GAS LINE 12W-58"36FILL WAVY BOUNDARY �65\ \ ' 182 North Andover pQ GAS VALVE E.S H. T. ® 16C FSL Z5Y 4/4 FIRM IN PLACE, 15% GRAV. S S�.lyl� ` \\ \\ \ LAMP POST PERC. RATE: > 30 MIN/IN 046- BI 46" \ \ 181 Owner: \ , 0 H. David Fournier BIT. BITUMINOUS CONCRETE TP 03-3 EL. 181.6 0'-9" A SL 10YR 4/4 FRIABLE 15 Timber Lane 9'-30" 8 SL 10 YR 5/6 FRIABLE, MANY ROOTS, 10% GRAV. ( / 30"-60" C SL 25Y 5/6 FRIABLE, 15% GRAV• SCALE: 1 PP-20� ��'�` � / S / � N/F North Andover E S H.W.T. 0 34' 20 10 0 20 40 60 T I / FFp, / KATHLEEN E. ERCOLINI PERC. RATE: 6 MIN/IN 0 42' I S MAP 104C PARCEL 85 f 5 3 1 0 5 10 15 METERSNt� / ��� REVISION TBM HYD. i `9�T S l / 2 �?8?• �°j BONNET BOLT N0. DATE DESCRIPTION BY 1�2i �F,p 1y ,v h W/ PUNCH MARK f/N. GRADE EL 184.31 / ELEV.=181.32 "r_ �-LOAM& SUED I s i 178 a - ��� \ \ \ \ \ = 6'MIN. 17LL (VARIES) 4" PVC �/i��/i��/r��/i��/i��/ '� \� \� \� \i � 1 ,� , INSPECTION PORTS STORM TECH 0 o Papp s�� 2'- 3/4' To 1 1/2'aEAN STaVE BALES OF HAY 2-2'x2')'3'STAKES F SC-310 CHAMBERS °� o ° .E° o$ •a G�ol�rn[E EL 182.53 TO BUTT TLaGE1HER EACH BA1Lf ,xj5 gt.o ?dg gso PQ•9 b'':° P�•p �I� MAX 75' 1°' �� 16A 16' 16' FABRJC rams VARIES O VARIES ° W o •,� ,� EL 181.2 ' BI.o 34, pcbp 3" 34' e'sp �•o 3' ~ o •° 34' do�s 6' L tr o °o. o °°° o °• ° o ° o °. °• ° ° o °• o o q �1 W6U�E3UftY °�. O,os ;S-.0e dt O.oS ° �S S° ot: O per° O.di.O•°S O °4: O oS.O:oS!O oR°o•O� o• o o°:.R O N.X. 0 j- o 0 0• o c0. °• o o ° °' o o °' °' o o• ° °• •o o. o °. o o O.�L o, o .O.ao•. °;S to o'j o•O.°1. EL 1807 oSoO•oSo oat. O°toO:djo 0�+1. 00 oto O.o; o�t00•o{ 0 o OoSoO•dlo off. 00dZoa•ogo �oZto off. OoSoO•oR001. 00 otoO•dio o°Z: ryO� F/LTERFABR/C \� ;<\yw//1\`��\`��\KN\/ �\`K\�. \ /L ��� / s a cn.8 STORM TECH 6. 3/4'-1 1/2'GY£AIU " 6" 6'BACy<FILL SC-310 END CAP sravE s' ,�� _�� ,, , 6 x6" 12-4 SUPPORT NET %;� �� i� 6' PVC 4" PVC SCH 40 TM. SECTION 2-2"'2'x3' STAKES BEHIND RL TER ➢�� SCH 40 �£ (�) 6'p� NTS EACLI BALE FABRIC' 4'PW ST MlEal SC-310 alAMBE]? PLAN Date: _ '- ELEVATION 6 END CAP PROJ. MGR.: F. FORD " " s•py� 181.8 4 PICC 2 INV. 181.8 INSTALLATION PROCEDURE- FROM ROOF 4x6 TEE �, I. EXCA VA 7E APPROXIMA TEL Y 6 DEEP TRENCH FOR ENTT�RE LENGTH OF HA YBALE FIELD: R. BROWN 15. LACEROA DRAINS (�) LZE 7.8' 16N07E' INSTALLATION LOCATION. DESIGN: L. THIBODEAU INVERt 2• INSTALL HAYBALES IN 7RENCH AND STAKE EACH HAYVALE WITH 2 STAKES EACH. DRAWN: L. THIBODEAU 6" PVC faETA/L � 1. ALL TOPSOIL AND SUBSOIL SHALL 8E REMOVED CHECKED: F. FORD BELOW & 2' AROUND INFIL TRA TION LIMITS INFIL TRA TOR SYSTEM 3 CHAMBERS END TO END (EAal aI MBER APPROXIMATEL Y 90 LONG). J INSTALL SIL T FENCE AGAINST FACE OF HA MALE, AS .SHOWN, WITH BOTTOM OF DATE: 1115104 WHERE FILL 1S REQUIRED, CLEAN, COARSE SAND , SHALL BE PROVIDED TO BRING INFILTRA E SILT FENCE BACKFILLED IWH APPROXIMA7FLY 6 OF FlLL MATERIAL. FILE: k:l...120031030561 INLET HEADER 2 INFIL TRA TOR SYSTEM CHAMBERS TO GRADE TEMPORARY DWG1030565P.DWG NOT TO SCALE NOT TO SCALE 3 EROSION CONTROL TOLL FREE JOB #: 03056 NOT TO SCALE (@ 1-888-DIG-SAFE (1-888-344-7233) 5 u EE T 2 of 2