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Home My WebLink About08/26/2024 - Supplemental Information - Notice of Intent (NOI) - - 0 GREAT POND ROAD ENVIROIN�MENTAL PARTNERS August 26, 2024 North Andover Conservation Commission Town of North Andover 120 Main Street North Andover, MA 01845 RE: Supplemental Information - Notice of Intent(DEP NOI #242-1900) North Lake Cochichewick Boat Launch Town of Nort Andover, MA Dear Commissioners, On behalf of the Town of North Andover, Environmental Partners (EP) is submitting the following supplemental information in support of permitting efforts for the North Lake Cochichewick Boat Launch project in North Andover, MA. Following the submission of the Notice of Intent(NOI) application and discussion with Amy Maxner on July 31, 2024, EP replaced the FEMA Flood Zone in Appendix B with the preliminary Federal Emergency Management Agency(FEMA) Flood Insurance Rate Map (FIRM) panel #25009CO228G, dated February 20, 2023 (Attachment 1). Provided below are revised sections of the NOI submitted to the North Andover Conservation Commission on July 31, 2024. Replace Design Plan sheets C-1 through C-6 with the attached updated Design Plan sheets. The updated plans show the new location of the FEMA Flood Zone A. Based on the updated Flood Zone, EP modified the retaining wall location to meet bordering land subject to flooding general performance standards. N�uw.mmm�t wwu In�d uu�� mmmm muumw '�Mwmm �i ww �ruwm�mo A�,o-ea u��Zev*s" � ww.0 mmmm m Replace the Wetlands Resource Areas section of the Project Narrative in its entirety with the following: There are four jurisdictional wetland resources on-site regulated under WPA Regulation (310 CMR 10.00).These include a bordering vegetated wetland (BVW), inland bank to North Lake Cochichewick, land under waterbody of North Lake Cochichewick, and bordering land subject to flooding(FEMA Flood Zone A). All resource areas are associated with the Lake. The limits of the wetland resource areas located in and around the Project Site are shown on the Design Plans. • Inland Bank- 301 CMR10.54: No changes to the Project have been made under this section since the filing of the NOI on July 31, 2024. • Bordering Vegetated Wetland (BVW)- 310 CMR 10.55: No changes to the Project have been made under this section since the filing of the NOI on July 31, 2024. • Land Under a Waterbody/Waterway- 310 CMR 10.56: This resource was measured as the area enclosed by the top of bank flagging,which generally corresponds to elevation 111 feet within the project limits. The proposed activities within this resource area include installing the turbidity curtain to establish the work zone, constructing a new boat launch ramp,grading along the shoreline, and removing the existing retaining wall and stone rock along the base of the wall. The associated grading work will convert 237 square feet of upland area to land under water. This work will alter 4,838-square feet of this resource area and 5,075 square feet of replacement. General Performance Standards No changes to the Project have been made under this section since the filing of the NOI on July 31, 2024. • Bordering Land Subject to Flooding- 310 CMR 10.57:This resource was measured between the top of bank flagging and the extents of the FEMA BFE (Flood Zone or Bordering Land Subject to Flooding). The proposed work occurs in the FEMA Flood Zone A. The performance standards are provided below: General Performance Standards (a) 1. Compensatory Storage: EP calculated 1,540 square feet of Bordering Land Subject to Flooding(BLSF)within the project limits. The proposed construction of the retaining wall and associated grading will have permanent impacts to BLSF. Specifically, 237 square feet of upland area will be converted to land underwater body. However,this impact will be offset by the addition of 237 square feet of flood storage area in front of the proposed retaining wall. As a result,there will be no overall net change to the BLSF area.Table 1 shows the Flood Storage Volumes on a foot-by-foot basis. 111v� aIIr III..°III m III :3Zmr"I Table 1: FUood Storage Volume Summary Elevation EX 1 stiin g Existing Proposed Proposed Vol u me,,(CF) Tdt�a I Incre,men't"al Incremental I ncremen't"a I Incremen't'al ('Proposed Vol.- Incremental Area('S,F') Vol u me,,(CF) Area ('S,F') Vol u me,,(Cf) E"Xist"Ing Vol.) Vo I um el,(Cf) 2. Restrictions to Flow:There will be no restrictions toflood flows in this area. 3. Wildlife habitat: In the area of the flood zone'the project will not impair wildlife habitat.A wildlife habitat report is provided with the NO| appUceton. �� \�/��u� �� ^ ~ m�m��m �x m �� m �� ~� m��\/��0�1 S � Replace Page 3 ofVVPA Form 3vvith the attached revised page 3. The Form includes revisions to Section B.d. Bordering Land Subject to Flooding. A��d^�� A ~� Wid��dN~�� bii�� \/��N��^�� \/^�^�� m�m� ~ ~ ~~ ~ � ~ ~ � � �� ~ �~ ~ ~ ~ ~ � Replace pages 3, 9' and 14 of the Wildlife Habitat Evaluation with the attached revised pages. The Wildlife Habitat Evaluation includes revisions to the narrative, Figure zk Impact Areas, and the K4essOEP Detailed Wildlife Habitat Evaluation form due tothe new location of the FEMA Flood Zone and adjustments to the proposed retaining wall. Should you have questions or require additional information, please contact me using the information below. Sincerely, Environmental Partners Group' LL[ Vd&ttD Jamie L.VeiUe\te' BT Senior Project Engineer P: 817.G57.O9GO E:jlv@envpartners.com emvP a Irt 1-i e s.c omm Attachments: 1. Preliminary Firm Panel Map#25009CO228G 2. Revised Drawing Sheets C-1 through C-6, half-size 3. MassDEP WPA Form 3, revised page 3 4. Wildlife Habitat Evaluation, revised pages 3, 9, and 14 CC: Wetlands and Waterways Program - MassDEP NERO Matt Sokap, MEPA Analyst- Executive Office of Energy and Environmental Affairs John Borgesi, PE,Town Engineer- North Andover Department of Public Works Jean Enright, Planning Director-Town of North Andover Peter Boynton, Planning Board and Harbormaster-Town of North Andover Amy Maxner, Conservation Administrator-Town of North Andover John Weir, Fire Chief-Town of North Andover Ted Kelley- Project Proponent Robert Rafferty, PE - Environmental Partners Ryan Paul, PE, CFM - Environmental Partners 111v� aIIr III..°III m III ATTACHMENT 1 PRELIMINARY FIRM PANEL MAP 760000 FT 765000 FT 71°.7"30.0'" OLD FARM RCr 71°5'37.5" 42°43'7.5" 42 43 7,5 „,,., 4,rQ,;• %.. x u%'; diw� •;d�� r,,�I y'9'W,.py,A J4 I �'w: � yM ,� r„ ;„� r r'il 4 �Nal 1 '�=ir C 1°. �/I ':�� '.R, 11L•L Ift w; � s r7,1 JpNQrarv„ 'E 1� hl of dd ,plw,,. 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C�uolagl al N;raroaay PANEL.L� ,�,,;� at a rGwwilon oP,J r S rot or and 2016 transpoitationriata prowled by the U S.Census Bureau with ear¢ucdedrned Of 1%anlnual chance flood with'average scale and pnlilical bo rich€ies rnmmn 20r7 prawiderl by M'wnsCq$at a Scala of tl:5 Q wg, � COMMUNITY NUMBER PANEL SUFFIX depth less than one foot or with drainage NORTH AnaDQVx la,TOWN OF 250098 Nrn8 c areas of less than one square mile n, Future Conditions 1`Ya Annual 0226 0 7 C Chance Flood Hazard,r,r,r4 x, Area with Reduced Flood Risk dine to Levee See Notes.ruff=)t ESSEXu IriTv OTHER AREAS OF M FLOOD HAZARD „ I Area with Flood Risk due to Levee A')+1 D IIC Area of Minimal Flood Hazard OTHER AREAS l,� REVISED l Area of Undeterrnimed Flood 64azard•rIT,1F c ''I`�J STRUCMINARY TURES I_._......___..._._.......Channel,Culvert,or Storm cower lll209 r 0229 2120/ 2 STRUCTURES rlOflililfld14110111i1111 Levee,Dike,or Floodwall E Cross Sections with 1%Annual Chance water Surface Elevation 6 j----- Coastal TFansect -----------------Coastal Tlransecf Baseline mm,„mmmm_.Profile Baseline VERSION NUMBER .6.16 Hydrographic Feature 0217 0216 0237 MAP NUMBER ~~513 Base Flood Elevation)Line(BFF) Dfl'9C+U' 8 OTHER Limit of Study FEATURES ---------Jurisdiction)Boundary MAP'REWICSEp 'F'AM'LL Nat71 NkINJfLIU ATTACHMENT2 . REVISED D 'I'llEG11�............ s ' 0 C 6 ["RAWIHNG STI (HALF-SIZEPLANS) � N N/FOF N/F \ / NORTHWN ANDOVER ANGUS REALTY N/F \ / (0 GREAT POND RD) CORPORATION RAGONESE (1077 OSGOOD ST) (1939 GREAT POND RD) N/F LAWSON y \ (1925 GREAT POND RD) / \ /c PR9PNGE ZONE yp VJ P N0N.D\SSUR \ p\sSR\cS N/F BENCHMARK / PELICH _ N/F (1915 GREAT POND RD) PELICH (0 GREAT POND RD) ELEV 119.39 _ ft GREAT POND ROAD 25 TOWN OF 25--25--25-�,-5 4 NORTH ANDOVER dS (0 OSGO OD ST) z FZ -OHW .'nvFz FZ Z Z _. F: FZ oyi FZ' as;° \` Fz FZ FZ Fz FZ Fz FZ FZ FZ J _ FZ A - BEN EHMRK SPIK ELEV=11§80 FZ CDT sy� ` PARCEL 689-147 F AREA 1±AgRE 7 - 2 N/F TOWN OF.: 25 -z5 _s_ 1 NORTH ANDOVER zs F No DISTURB 7ON (0 GREAT POND RD) c - } - �t o r III TOB COINCIDES WITH MHW E 25---25---25---25---25-25-- -25 El FZ Mt ` :^tit��tOffUY OHVlx� L Off,'- m - e- 0 ... ,_. BENCHMARK SPIKE v --._ - ELEV=117.78' BENCHMARK ---- - -.. SPIKE _ ELEV-109.32' -_ .-... U LAKE COCHICHEWICK m 3 0 U N Z a ENVIRONMENTAL1 8-9-24 FEMA FLOOD ZONE UPDATED Scale =20' PERMITTING �tMaF,Ss� NORTH LAKE COCHICHEWICK BOAT LAUNCH FA Date JULY2024 TOWN OF NORTH ANDOVER,MA Sheet No. v\\ b RYAN J. tiG a PAUL Job No. 22003302 CIVIL a y Desi Designed b JLV THIS LINE IS ONE INCH m \- PARTNERS Sii2o 9 y LONG WHENPLOTTEDAT z \\ jggx?Epti J Drawn by AES FULL SCALE ON A 22"X - A< Checked by RJP 34"DRAWING EXISTING CONDITIONS 07/22/2024 An' \' "' MARK DATE DESCRIPTION Approved by RJP N/F TOWN OF N/F NORTH ANDOVER ANGUS REALTY N/F ON RD) CORPORATION(0 GREAT POND RAGONESE (1077 OSGOOD ST) (1939 GREAT POND RD) N/F LAWSON (1925 GREAT POND RD) 7-Otle gs"k 5"q1 140 5,R\G* N/F PELICH H-BE-N-CH-M-AR-KI (1915 GREAT POND RD) N/F PELICH 1 SPIKE (0 GREAT POND RD)1 JELEV=119.39 GREAT POND ROAD ...................................... ---------------------------- -------- ---------------------------------- FILTER SOCK AND .................._ CONSTRUCTION ENTRANCE .ND E� SILT FENCE NO.2 .......--- ............................. .............. SILT FENCE NO.3 ................................................................................................................................................................................................. ......................................... (TYP.) .................................... (TYP.) --——————--- 25— A --25 N/F TOWN OF 25-25,15 NORTH AN 25— DOVER (0 OSGOOD ST) FZ —OHVV--_ F1 F Z FZ F Z IF FZ FZ z—Fl—F7 F7—FZ, F7 Nl� FILTER SOCK AND Fz "'S 7 N, SILT FENCE NO.1 F 7 (TYP.) F 7 Cry 0, -147 PARCEL689 AREA-1±ACRE N/F 25 25 TOWN OF 25 --25-25 25�"25 Z014E NORTH ANDOVER 2,5�NO DISTURB (0 GREAT POND RD) /01 'z POTENTIAL —————— 4� DEWATERING BAG 4--4 LOCATION.TO BE 41( DECIDED PRIOR TO OHW c z_? —�OHW PROPOSED STOCKPILE 7 CONSTRUCTION LOCATION FILTER SOCK AND —25 25 —25 SILT FENCE NO.4 o (TYP.) 4- 41kQt\1 —25-25 —\_11,\_25 25'_25 25� 25 -z; FZ F7 o 4 0, T'T, E 0 BENCHMARK APPROX.LOCATION POTENTIAL SPIKE BENCHMARKOF COFFERDAM. DEWATERING ELEV=117.781 BAG SPIKE LIMIT OF WORK TURBIDITY CURTAIN MAX WATER LEVEL LOCATION.TO BE LOCATED OUTSIDE OF THE COFFERDAM EL.115.0'(NAVD88) DECIDED PRIOR TO CONSTRUCTION GENERAL DEWATERING NOTES:- 1. THE CONTRACTOR SHALL HANDLE GROUNDWATER,WHERE ENCOUNTERED,AS DESCRIBED IN SECTION 02140.DURING ANY DEWATERING,THE CONTRACTOR SHALL USE TEMPORARY STONE AROUND THE SUCTION AND DISCHARGE ENDS TO MINIMIZE TRANSPORT OF TRENCH MATERIALS.THE DISCHARGED WATER SHALL PASS THROUGH FILTER FABRIC,SILT BAGS,FRAC TANKS OR A COMBINATION OF ALL. EROSION CONTROL NOTES: LAKE COCHICHEWICK 2. TEMPORARY DEWATERING SEDIMENTATION BASINS,WILL BE CHECKED AFTER EACH SIGNIFICANT 1. EROSION CONTROL MEASURES ARE SHOWN ON THE PLANS FOR THE ENTIRE DURATION OF CONSTRUCTION. RAINFALL AND CLEANED AS NEEDED TO RETAIN STORAGE CAPACITY. THE FILTER SOCK AND SILT FENCING WILL NEED TO BE RE-ADJUSTED AFTER IN-WATER ACTIVITIES ARE COMPLETED. 3. SPILL KITS SHALL BE MAINTAINED ON-SITE AT ALL TIMES. 2. THE FILTER SOCK AND OTHER EROSION AND SEDIMENT CONTROL MEASURES/DEVICES SHALL BE 4. ALL FOUNDATIONS AND EXCAVATIONS SHALL OCCUR IN"THE DRY".GROUNDWATER SHALL BE LOWERED BY A MINIMUM OF 2'BELOW THE BASE OF THE EXCAVATION. INSPECTED,CLEANED,REPLACED AND/OR REPAIRED AS NECESSARY,WEEKLY AND AFTER EACH SIGNIFICANT RAINFALL 5. THE CONTRACTOR SHALL MAINTAIN ALL DIESEL GENERATORS REQUIRED WITHIN CONTAINMENT. 3. INSTALL FILTER SOCK PRIOR TO COMMENCEMENT OF THE EARTHWORK OPERATIONS.INSPECT EROSION CONTROLS IMMEDIATELY AFTER EACH STORM AND REMOVE ACCUMULATED SEDIMENT AS REQUIRED. 6. A MA PROFESSIONAL ENGINEER STAMPED DEWATERING PLAN IS REQUIRED,AS DESCRIBED IN REPLACE DAMAGED EROSION CONTROLS AS REQUIRED. SPECIFICATION SECTION 02140.THE CONTRACTOR SHALL INCORPORATE THE DEWATERING DESIGN FEATURES SHOWN ON THE DESIGN DRAWINGS HEREIN. 4. THE CONTRACTOR SHALL ADHERE TO THE REQUIREMENTS OF THE NORTH ANDOVER CONSERVATION COMMISSION'S ORDER OF CONDITIONS. 7. THE CONTRACTOR SHALL ADHERE TO THE REQUIREMENTS OF THE NORTH ANDOVER CONSERVATION COMMISSION'S ORDER OF CONDITIONS.SEE SPECIAL PROVISIONS IN SPECIFICATIONS SECTION 01170. 5. EROSION CONTROLS SHALL BE PLACED IN TWO PHASES.PHASE 1 SHALL INCLUDE EROSION CONTROL SECTION 1 THROUGH 3,COFFERDAM,AND TURBIDITY CURTAIN DURING LAKE FRONT WORK.PHASE 2 SHALL 8. COFFERDAMS FOR LAKE CONSTRUCTION SHALL BE PART OF THE CONTRACTORS DEWATERING PLAN. INCLUDED EROSION CONTROL SECTIONS 1 THROUGH 4(COFFERDAM AND TURBIDITY CURTAIN SHALL BE COFFERDAMS SHALL BE DESIGN TO A MAXIMUM WATER ELEVATION OF 116.01 NAVD88. REMOVED ONCE LAKE FRONT WORK IS FINISHED. 1 8-9-24 FEMA FLOOD ZONE UPDATED Scale 11. 20' PERMITTING OM Cl OF&W NORTH LAKE COCHICHEWICK BOAT LAUNCH Date JULY 2024 11 ...... ....................... SET FE�I�i 1�10 V� i- 'TYP SILT Fli��Ii N�;(TY SILT F'TYP 25_25-2 ENV I RONMENTAL Sheet No. RYAN J. TOWN OF NORTH ANDOVER,MA PAUL Job No. 22003302 CIVIL Designed by THIS LINE IS ONE INCH .51127 No d LONG WHEN PLOTTED AT PARTNERS Drawn by AES FULLSCALEONA22"X RJP 34"DR INGChecked byEROSION CONTROL AND DEWATERING PLAN �-� 07/22/2024 AL-111ex MARK DATE DESCRIPTION Approved by RJIP ti � / N N/FTOWN / N/F OF NORTH ANDOVER ANGUS REALTY N/F / (0 GREAT POND RD) CORPORATION RAGONESE (1077 OSGOOD ST) (1939 GREAT POND RD) / LAWSON y \ (1925 GREAT POND RD) tA / \ //POSECTIOONE DR GEZ ON-OS3URgPN \ / p stR1cS N/F BENCHMARK / PELICH N/F --. (1915 GREAT POND RD) -= PELIGH SPIKE -' (0 GREAT POND RD) ELEV=119.39 GREAT POND ROAD R&S GUARDRAIL., R&D PAVEMENT/GRAVEL .... R&S SIGN SAWCUT TYP. R&S SIGN R&S GUARDRAIL .... CLEAR SHRUBS AS �=..�..` . -- ��..�— � n,-!" "25--_ NEEDED IN FRONT--25 TOWNIF N OF OF THE EXISTING NORTH ANDOVER f25--25 RETAINING WALL (0 OSGOOD ST ` `. I ... ............... J - PROTECT&RESET - Fz rz �OHW� r� MWCOVER TYP. I Fz Fz z FZ -. � TREE/SHRUB CLEARING(TYP.) - - Fz' Fz-�� s R&S SIGN PROT CT AND Fz—j-Fz Fz z l_Fz Fz R&D SWING GATE SUPPORT UTILI Y POLE a Fy FZ--FZ--rZ FZ ...� :. _ ` GUY WIRE Fy.. BENCHMARK :' R&R ,... _< P REBUILD WALL SPIKE s 'cE AS NECESSARY ELEV=116&a ti=o`G n s PARCEL 689-147 ��pF o0 AREA=1T APRE _- _ ` N/F25 ' TOWN OF � .�->:-zs r NORTH ANDOVERI ° 25 R8 ZONE ® _ _ �N t 'L� (0 GREAT POND RD) ..�.-25'NO DISTURB- 'y ll 1= ————o — —/ 7 R&S EXISTING P CT EXISTING SHRUBS _ BOAT RACK(TYP.) •` ROTE O v - a'- -OHW -OHIN:�-OHW.----OHI� OHW--- ,I = TREE/SHRUB CLEARING — ~ I (TYP.) 2S� �� a b_ \ A. R&D CONCRETE BOAT RAMP --25—25—z5—25--z5--2S v R&S KIOSK SIGN r �ti 7 N REMOVE FAILED CONCRETE AND - Fz Fz STONE RETAINING WALL AND E c3a R&D TREE(TYP.) z .. - REPLACE WITH REVETMENT �" BENCHMARK R&D EXISTING RIPRAP SPIKE BENCHMARK R&D RETAINING WALL - -(APPROXIMATE AREA) ELEv=117.78 T`\\ _ - SPIKE `LIMIT OF WORK R&S CLEAN BOULDERS -- ELEv=1o9.3r FROM WALL � E � - Q U ' LAKE COCHICHEWICK ro 0 m 3 U N m Z ENVIRONMENTAL 1 8-9-24 FEMA FLOOD ZONE UPDATED Scale 1"=20' PERMITTING N ��xoFrayss4 NORTH LAKE COCHICHEWICK BOAT LAUNCH Date JULY2024 TOWN OF NORTH ANDOVER,MA Sheet No. RYAN J. yc Job No. 22003302 0 PARTNERS PAUL �Vip y Designey by JLV THIS LINE IS ONE INCH a �Na.51i27 LONG WHEN PLOTTED AT 37Drawn b AES FULL SCALE ON A 22"XC-3 Checked by RJP 34"DRAWING DEMOLITION PLAN _ o7izzizoza C V L V MARK DATE DESCRIPTION Approved by RJP 8 rFBENCHMARKI -7- P(I"N D D BIORETENTION AREA NO.1 PRECAST CONCRETE OVERFLOW=116.50 FLARED END 'z BOT 115.00 - INV.OUT=115.30 .................. ................. ............... <' SPLASH PAD OV �' 12 RCP PIPEERFLOW STRUCTURE ELEV.=116.50 BIORETENTION AREA NO.2 OUT=115.50 BOT.=115.50 7 ---------- -------- 25-25- 25- 2'5-25--_'11.50 115 118 25-_-T5 117 116-25 117.26 115.50 x 11550 x 115.50 117.50 N, x Z-Fz-FZ-FZ-FZ- 7.46- FZ FZ FZ Z F " --\ Fz C/1/1 117.20 OHW 17 05:? Z F1 x Fz Fz- R35.0' -18.0,1 Fz BENCHMARK 116.50 PIKE 30.0' 17.29 FILTER SOCK Al 1D NF x ELEV= 7 117.75 SILT FENCE(TYP.) 2.0% 8'WIDE BOAT LAUNCH WITH2..-'---_._ ---'S- 25 25 25 25 25 25 117.50 25�No DISTURB ZONE SHEET CD-5) -- REVETMENT(SEE DETAIL poll 116.50 ZV I__--_----- -- o 117.50 R36.0' x 11721 R54,0' A/ -2- ---OHVV-o NN R39.( 3 APPROXIMATE LOW OHW 25-'---'25 WATER LEVEL 25 18.01 1�7�7 3 116. X 75 1.7/1 x _X11 7.60 TOW 117.0" STONE FILLED PERMEABLE PAVER - -25 -21- BOAT LAUNCH WITH 12%SLOPE 11647 (SEE DETAIL SHEET CD-5) 116.22 77-- _kx1 16.15 1�2% x 114 114.00 0.8% TOW TRANSITION 113.00 E WEST:115.00 EAST:11 6.00 Aw 4 TOW TRANSITION 112.00 WEST:116.00 EAST:117.00 BENCHMARK -- ------ SPIKE ELEV-117.78' �LIMIT OFWORK MSE BLOCK WALL TOW EL.AS NOTED (SEE DETAIL SHEET CD-5) --K If A K 2 8-21-24 RETAINING WALL RELOCATED PLAN SCALE:1 20' 8-9-24 FEMA FLOOD ZONE UPDATED Scale 1.1 20' PERMITTING Date JULY 2024 NORTH LAKE COCHICHEWICK BOAT LAUNCH ENV I RO NMENTAL Sheet No. O RYAN J. TOWN OF NORTH ANDOVER,MA Job No. 22003302 o PAUL % 1. 0 THIS LINE IS ONE INCH < 0 2?MR, CIVIL Designed by JLV No.51127 gg- LONG WHEN PLOTTED AT pp /TS m PARTNERS Drawn by I AES FULL SCALE ON A 22"X 34"DRAWING 7/22/2024 Checked by RJP GRADING AND DRAINAGE PLAN C-4 Al'Ap x MARK DATE DESCRIPTION Approved by RJP 2 rFBENCHMARKI BIORETENTION AREA NO.1 .............. LIMITS OF PROPOSED .............. ............................................................................. BIORETENTION AREA(TYP.) GRAVEL-FILLED PAVED APRON CONCRETEPAVERS (2)2"PVC CONDUIT FILTER SOCK AND ———— ———————— HANDHOLE BIORETENTION AREA NO.2 SILT FENCE(TYP) W/COVER —25— ...8.0' R16.0' 25— 25 4, D —25 ---�tR�;n, FZ FZ FZ Z FZ FZ .FZ OHW ;_ = j C/1/1 FZ FZ FZ - ————-- N f 'z 4� Fz Fz A K I 'p 30.0' 4 FILTER SOCK AND O IK g" Fl -4- SILT FENCE(TYP.) _\,O GRAVEL-FILLEDPARKING AREA FK10 0 CONCRETE PAVERS 25 8'WIDE BOAT LAUNCH WITH 25 25 25-25 No DISTURB ZONE REVETMENT(SEE DETAIL -C E- g?i 25' SHEET CD-5) GRASS-FILLED "r- R36.. CONCRETE PAVERS 'R39 0' R54.0' R10.0' IN -t-- omv OR OI� 18-01 2 OHW OHVV T f —2 P, 1 L 2 5 8'WIDE STONE FILLED PERMEABLE HANDHO LE PAVER BOAT LAUNCH WITH 12% W/COVER PARCEL LINE SLOPE(SEE DETAIL SHEET CD-5) RECREATIONAL ANDSOCIAL SPACE E MSE BLOCK WALL Aw (SEE DETAIL SHEET CD-5) 3 8'WIDE STONE PERMEABLE PAVER PATH AND FLARED APRON SLOPE STABILIZATION(TYP.) BENCHMARK SPIKE BENCHMARK ELEV-117.78' SPIKE 7LIMIT—OF—WO—RK— ELEV=109.32' PARKING SUMMARY TABLE 6 EXISTING APPROX.5 SPACES PROPOSED APPROX.7 ADDITIONAL SPACES 2 8-21-24 RETAINING WALL RELOCATED ACCESSIBLE PARKING 1 STANDARD SPACE VEHICLE W/TRAILER PARKING 2 SPAC ES TOTAL PARKING PROVIDED APPROX.12 SPACES(INCLUDING ACCESSIBLE+TRAILER PARKING) PLAN SCALE:1" 20' 1 8-9-24 FEMA FLOOD ZONE UPDATED Scale 1.1 20' PERMITTING E IVA OF 44'T 9 Date JULY 2024 NORTH LAKE COCHICHEWICK BOAT LAUNCH ENV I RO NMENTAL Sheet No. O RYAN J. Job No. 22003302 TOWN OF NORTH ANDOVER,MA PAUL oo 0 CIVIL IN I Designed by THIS LINE IS ONE INCH 'mp- LONG WHEN PLOTTED AT No.51127 JLV p AES FULL Drawn by L SCALE ON A 22"X M PARTNERS T I I 1 1 34"DRAWING 07/22/2024 Checked by RJP SITE PLAN C-5 Al'Ap x +KDATE DESCRIPTION RJP [MAR Approved by I PNGfc V\S��0?6 rBENCHMARKI -7— P REUSE CLEAN BOULDERS 5'X5'RIP RAP FROM RETAINING WALL. SPLASH PAD DOUBLE SWING GATE SS SIG RESET GUARDRAIL-- REMOVE AND RESET GUARDRAIL REMOVE AND RESET MW COVER RESET UY WIRE 25-25-25— -7, BIORETENTION AREA NO.1 j5 25—_-T5 —25 Ey BIORETENTION AREA NO.2 4--f- - - Z—F1 OHW FZ FZ FZ z Fz F Z FZ FZ Fz RIPRAP-LINED SWALE 'AR ——— Fz z - NATIVE Fz —0 ONE WAY�QN PLANTINGS BEN;14MK� Vtt�F _-MIN.5-(TYP.) LER ET SIGN"TRA RACKS S 30.0' k P11KI-I- PARKING ONLY' oN (6)8'X20-BOAT RACK Co- RESET MW COV ER (2)12'<20'BOAT BOAT RACK RACK RESET MW COVER > 25-� rs� 25_1 8'WIDE BOAT LAUNCH WITH 2 "NO TRAILER \IEW 25 ACCESS"SIGN' -4- 2�5 21 --7 25 ZONE A- 25 REVETMENT(SEE DETAIL SIGN — N No DISTUR SHEET CD-5) (2)LOCKING BOLLn�RDS' —————--- 1 MIN.8'(TY P.) TRASH AND :;LING 13 0— RECY + R36'0' III RECEPTACLES ACLES R54 0' ONE WAY SIGN o————————-- OHVV "vY o 4v-0", OHW -2 25 2 8'WIDE STONE FILLED PERMEABLE 7, PAVER BOAT LAUNCH WITH 12% 2 5 SLOPE(SEE DETAIL SHEET CD-5) kti A NATIVE TREES SIGN"HANDICAP IMF PARKING" �,s (TYP.) WOOD POST WITH RESET EXISTIN ROPED FENCING E KIOS -7 6�w 4 WALL D MSE BLOCK (SEE DETAIL o SHEET CD-5) BENCHMARK REMOVE AND REPLACE SPIKE FENCING(TYP.) EXISTING STONE ROCK BANK BENCHMARK ALONG FACE OF WALL SPIKE ELEV=109.32' LEGEND L A K LOAM AND SEED DISTURBED AREA GRAVEL FILLED PAVERS L) ———— GRASS FILLED PAVERS BIORETENTION AREA 2 8-21-24 RETAINING WALL RELOCATED REVETMENT RIP RAP L) PLAN SCALE:1 20' 8-9-24 FEMA FLOOD ZONE UPDATED Scale 11. 20' PERMITTING E IVA OF 44,T ENV I RO NMENTAL Date JULY 2024 NORTH LAKE COCHICHEWICK BOAT LAUNCH Sheet No. O RYAN J. TOWN OF NORTH ANDOVER,MA PAUL Job No. 22003302 o 0 CIVIL THIS LINE IS ONE INCH al 01 Designed by JLV M, No.51127 �g LONG WHEN PLOTTED AT T PARTNERS Drawn by AES FULL SCALE ON A 22"X 34"DRAWING 07/22/2024 Checked by RJP SITE RESTORATION PLAN C-6 Al'Ap x +KDATE DESCRIPTION RJP MARK Approved by I ATTACHMENT 3 MASSDEP WPA FORM 3 REVISED PAGE 3 4 Massachusetts Department of Environmental Protection Provided by MassDEP: Bureau of Resource Protection - Wetlands MassDEP File Number WPA Form 3 — Notice of Intent Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 Document Transaction Number City/Town B. Buffer Zone & Resource Area Impacts (temporary& permanent) (cont'd) Resource Area Size of Proposed Alteration Proposed Replacement(if any a. ® Bank 202 202 1. linear feet 2. linear feet For all projects affecting other b. ❑ Bordering Vegetated Resource Areas, Wetland 1.square feet 2.square feet please attach a 4)838 57075 narrative c. ® Land Under explaining how 1.square feet 2.square feet the resource Waterbodies and 63 area was Waterways 3.cubic yards dredged delineated. Resource Area Size of Proposed Alteration Proposed Replacement(if any d. Z Bordering Land 17540 11540 Subject to Flooding 1.square feet 2.square feet 0 369.5 3.cubic feet of flood storage lost 4.cubic feet replaced e. ❑ Isolated Land Subject to Flooding 1.square feet 2.cubic feet of flood storage lost 3.cubic feet replaced f. ❑ Riverfront Area 1. Name of Waterway(if available) -specify coastal or inland 2. Width of Riverfront Area (check one): ❑ 25 ft. - Designated Densely Developed Areas only El 100 ft. - New agricultural projects only ❑ 200 ft. -All other projects 3. Total area of Riverfront Area on the site of the proposed project: square feet 4. Proposed alteration of the Riverfront Area: a.total square feet b.square feet within 100 ft. c.square feet between 100 ft.and 200 ft. 5. Has an alternatives analysis been done and is it attached to this NOI? Z Yes❑ No 6. Was the lot where the activity is proposed created prior to August 1, 1996? Z Yes❑ No 3. ❑ Coastal Resource Areas: (See 310 CMR 10.25-10.35) Note: for coastal riverfront areas, please complete Section B.2.f. above. wpaform3.doc•rev. 12/4/2023 Page 3 of 9 ATTACHMENT 4 WILDLIFE HABITAT EVALUATION REVISED PAGES 3, 9 &. ol 4 2.2 Bordering Land Subject to Flooding a existing retaining wall, boat ramp, and Existing structures within the flood zone consist of , grassed areas an . The area is sparsely vegetated with maintained grasses, sparse trees, and small shrubs.Vegetation within the resource area is similar to that along the bank, including alder and rye grass. 3.0 Wildlife Habitat Functions 3.1 Topography • Inland Bank and Land Under Waterbody (Lake Cochichewick) The bank generally follows the 111 — 113 ft contour line, as seen on the construction plans included within the NOI. Beyond the bank, the slope of the bed of the Lake flattens out and the impacts from this project extend almost 35 ft from the bank into the Lake where the boat ramp will be extended just past the 110 ft contour line. There is an abrupt decline in topography from relatively flat floodplain to shoreline, which is defined by a 10-20% slope through the woody vegetation to the existing retaining wall. The slope varies beyond the bank from continued decline in areas of degraded/no wall to an abrupt vertical beyond the wall. • Bordering Land Subject to Flooding The topography of the floodplain is generally flat with a slight slope towards the bank, consisting of an upland meadow . 3.2 Soil Structure • Inland Bank and Land Under Waterbody (Lake Cochichewick) The soils that are exposed along the bank are primarily composed of silty sand loam, with cobble and gravel co-mingled along the shoreline and transition to rocky substrate. The soils under the waterbody is rocky as well where exposed. There is little or no organic matter present in the soil. • Bordering Land Subject to Flooding Similar to the bank, the upland areas adjacent to Lake Cochichewick are sandy loam with little organic material present. 3.3 Plant Community Composition/Structure of Bank • Inland Bank and Land Under Waterbody (Lake Cochichewick) The plant community along the bank consists of, primarily, Alder saplings (Alnus spp.), Silver Maple (Acersaccharinum), and River Birch (Betula nigra)trees; Japanese Honeysuckle (Lonicera japonica) and Autumn Olive (Elaegus umbellate) in the shrub layer; and Virginia Wildrye (Elymus virginicus) and Poison Ivy (Toxicodendron radicans) in the herbaceous layer. The bank varies in structural stability, with the eastern portion of the bank where there is no wall exhibiting the most erosion. Apex Companies,LIE"203h.h,,ro s,. .".ourt.-Midloflhian,VA 2 1 1 1 804.897.2718, 90 . 7. , 9 apex(;w;.com Figures rFBENCHMARKI BIORETENTION AREA NO.1 .............. LIMITS OF PROPOSED .............. ............................................................................. BIORETENTION AREA(TYP.) GRAVEL-FILLED PAVED APRON CONCRETEPAVERS (2)2"PVC CONDUIT FILTER SOCK AND ———— ———————— HANDHOLE BIORETENTION AREA NO.2 SILT FENCE(TYP) W/COVER —25— ...8.0' R16.0' 25— 25- 25 4, D —25 ---ItR�;n, OHW--� FZ— FZ Z ,FZ FZ Z FZ FZ FZ FZ 'Z FZ Fz Fz' .......... 0. -------- ++:+ --r 18. Fz —R35.0' 4----+ 4- 30.0' N" yp FILTER SOCK AND oN + ti SILT FENCE(I YFI.) F4a010 Ila + PARKING AREA GRAVEL-FILLED -T- + R100' + I ORET s 25 8'WIDE BOAT LAUNCH WITH - 2—CNC —2# RS -25 REVETMENT(SEE DETAIL ZONE �'g 25'NO DISTURB "'Y SHEET CD-5) _T GRASS-FILLED + U R CONCRETE PAVERS " t T ++ 4--4- R39.0 36 0' R10.0" "� 72 OHW SOH, OHW R6.0' —2 _51 _F + a 8'WIDE STONE FILLED PERMEABLE 25 25 PARCEL LINE HANDHOLE W/COVER PAVER BOAT LAUNCH WITH 12% SLOPE(SEE DETAIL SHEET CD-5) RECREATIONAL AND SOCIAL SPACE Q E > Impact __ MSE BLOCK WALL Aw (SEE DETAIL SHEET CD-5) K 8'WID STONE PERMEABLE PAVER ATH AND FLARED AP SLOPE STABILIZATION(TYP.) BENCHMARK SPIKE .,. BENCHMARK Impact#2 1 m pact#5 ELEV-117.78' SPIKE LIMIT OF WORK Impact#3 Impact#4 LEGEND EXISTING PROPOSED MAJOR CONTOUR LOAM AND SEED DISTURBED AREA 4 MINOR CONTOUR GRAVEL FILLED PAVERS WETLAND I11.......... WETLAND FLAG AID NUM BER GRASS FILLED PAVERS [ . � . .1 BIORETENTION AREA 2� 25'NO DISTURB ZONE 50'NO BUILD ZONE REVETMENT 100*WETLAND BUFFER RIP RAP L TOP OF BANK TREE/SHRUB CLEARING TOP OF BANK FLAG AND NUMBER ORDINARY HIGH WATER MARK 100-YEAR FEMA FLOOD ZONE L) PLAN 2 SCALE:1" 20' 8-9-24 FEMA FLOOD ZONE UPDATED E 1 Scale 20' PERMITTING IVA OF 44,S, ENV I RO NMENTAL 2 8-21-24 RETAINING WALL RELOCATED Date JULY 2024 NORTH LAKE COCHICHEWICK BOAT LAUNCH RYAN J. Job No. 22003302 TOWN OF NORTH ANDOVER,MA o PAUL CIVIL THIS LINE IS ONE INCH !2\0 No.51127 Designed by IN 10 JLV M g LONG WHEN PLOTTED AT I T PARTNERS Drawn by AES FULL SCALE ON A 22"X Checked by RJP Figure 4: impact Areas 34"DRAWING Al'Ap x Covn 07/22/2024 1_\�r",,y- +KDATE DESCRIPTION�MAR Approved by RJP Attachment B: Detailed Habitat Evaluation Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands Program 1 W'Ildl'lfe Hab'Itat P Gumidance Appendix B: Detailed Wildlife Habitat Evaluation Part 1. Summary Sheet Important:When North Lake Cochichewick Boat Launch filling out forms Project Name on the computer, use only the tab North Lake Cochichewick Boat Launch, North Andover, MA 01845 key to move your Location cursor-do not 0.74 Acres 07/25/248/21/24 use the return Size of Area Being Impacted Date key. Impact Areas (linear feet, square feet, or acres for each of the impact areas within the site) Waterbody/ Name Wetland Upland Total Area Waterway 1. Impact#1 563.68 sf 0 0 563.68 sf 27.84 sf 27.84 sf 2. I m pact#2 5 .44 0 0 --50-444- 40.3 sf 40.3 sf 3. Impact#3 0 0 .44 6f 4. 1 m pact#4 422.30 sf 0 0 422.30 sf 1,540 sf 1,540 sf 5. Impact#5 0 0 6. 7. *Riverfront Area/BLSF Attach Sketch map and/or photos of the Impact Areas Narrative Description of Site (attach separate page if necessary) The North Lake Cochichewick Boat Launch is located on the north end of North Lake Cochichewick across from House#1939 along Great Pond Road in North Andover, MA on a Town owned parcel (Book 689, Pg 147 and Town Map 35-21)within the former extents of the North Sewer Pump Station that was previously demolished. The existing area consists of a paved driveway entrance apron, a dirt/gravel driveway, grassed areas, moveable boat racks, a failed bituminous concrete boat launch that extends into the Lake, and a cobble and concrete retaining wall along the water's edge. The retaining wall is currently held up by tree roots that have grown into and around the wall and pieces of the existing asphalt boat launch have broken off into the Lake. Certification hereby certify that this project has been designed to avoid, minimize, and mitigate adverse effects on wildlife habitat, and that it will not, following two growing seasons of project completion and thereafter, substantially reduce its capacity to provide important wildlife habitat functions. Grace Nottingham Signature of Wildlife Specialist(per 310 CMR 10.60(1)(b)) Typed or Printed Name detlhab.doc• 10/07 Detailed Wildlife Habitat Evaluation•Page 1 of 8