HomeMy WebLinkAbout11/07/2024 - Supplemental Information Letter #3 - - 0 GREAT POND ROAD ENVIRONMENTAL
PARTNERS
November 7, 2024
North Andover Conservation Commission
Town of North Andover
120 Main Street
North Andover, MA 01845
RE: Supplemental Information #3- 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 Group, LLC(EP) is submitting
supplemental information letter#3 in support of permitting efforts for the North Lake Cochichewick
Boat Launch project in North Andover, MA.
W iir i se ii t iii iiP,i o iii 'i irn iii s s iii o ii,i I[,, e s-t.,,, iir I ri fo iir-,iiiii a t,iii o iir--i
During the Conservation Commission hearing on October 9, 2024, the Commission requested test
pits be performed within the vicinity of the proposed bioretention areas and a local project example
of a boat launch ramp constructed with Turfstone permeable pavers be provided. EP's responses to
the Commission's comments are provided below.
1. Test pits were performed on October22, 2024.A detailed report of the results from the
subsurface explorations is provided in Attachment 1.
The estimated seasonal high ground water(ESHGW)was determined at elevation 111.7-feet
at test pit TP-1 and elevation 112.8-feet at test pit TP-2. Based on the soil boring
investigations performed in October 2022, ESHGW was observed at 110-75-ft. The October
2024 test pit observations indicated ESHGW to be approximately 1-ft higher at TP-1 and 2-ft
higher atTP-2than previously observed subsurface investigations. No water was visible
during the test pit observations.
To meet the guidelines of the Massachusetts Stormwater Handbook, EP recommends the
bioretention areas be revised to infiltration basins to maintain 2-ft of separation from the
bottom of the basin to ESHGW elevations. No changes to the stormwater report and grading
are necessary to modify the design from bioretention areas to grass-lined infiltration basins.
Attachment 2 shows the proposed revisions to the permitting plans. If the Commission is in
agreement with these modifications, EP will incorporate the modifications into the final
design drawings and update the operations and maintenance plan.
e ol
d
2. Photos of a project example of a local boat launch ramp constructed with Turfstone
permeable pavers is provided in Attachment 2.The boat launch ramp is located on Crystal
Lake off Lowell Street in Peabody, MA. Both Owner and Manufacturer stated that no
permeable paver's have been needed to be replaced since the construction of the boat
launch in June 2018. For further information regarding the projector long-term maintenance
operations, the owner and manufacturer can be contacted using the information below.
Owner's Contact Information Manufacturer's Contact Information
Brian Grant, Superintendent of Parks and Judy True,Architectural & Engineering
Forestry Representative
Peabody Department of Public Works Ideal Block
0: 978.536.7134 0: 781.894.3200
E: brian.grant@peabody-ma.gov M: 978.805.8024
E:jtrue@idealblock.com
Should you have questions or require additional information, please contact me using the
information below.
Sincerely,
Environmental Partners Group, LLC
I�tl
Jamie L.Veillette, EIT
Senior Project Engineer
P: 617.657.0960
E:jlv@envpartners.com
Attachments:
1. Soil Observation Report
2. Revised Drainage Layout and Details
3. Photos of Crystal Lake Boat Launch, provided by Ideal Block
CC: 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
Ted Kelley- Project Proponent
Robert Rafferty, PE - Environmental Partners
Ryan Paul, PE, CFM - Environmental Partners
III-i v P a IIIrt-°e s m c o Itm
A..............F..............
S id�� pool �
ENVIRONMENTAL
'Ifl PARTNERS
OBSERVA"TION R,EPORIIT
Date: November 6, 2024
To Mr.John Borgesi, PE,Town Engineer
Ms.Amy Maxner, Conservation Administrator
From Drew Gallant, PE, SE - Environmental Partners
Jamie Veillette, EIT- Environmental Partners
Subject North Lake Cochichewick Boat Launch
Soil Evaluation of Proposed Bioretention Areas#1 
On Tuesday, October 22, 2024, Environmental Partner's (EP) personnel, Drew Gallant(SE #14482)
and Tyler Pilch, arrived on-site at7:45AM to perform a soil evaluation of the proposed locations for
bioretention areas#1 and #2 at the North Lake Cochichewick Boat Launch in North Andover, MA.
The purpose of the site visit was to determine soil texture and estimated seasonal high groundwater
(ESHGW)within the limits of the proposed bioretention areas.
EP personnel met with the North Andover Town Engineer,John Borgesi, and a North Andover DPW
operator to review the soil testing procedure.Two test pits(TP-1 &TP-2)were excavated by the DPW
operator. Test pit locations are shown in Figure 1 on the following page of this report.
In summary,TP-1 and TP-2 consisted of Sandy Loam at the bottom of each test pit and both had the
presence of redoximorphic features, an indicator of estimated seasonal high groundwater(ESHGW).
Sand was observed in the B soil horizon forTP-1 while Loamy Sand was observed in the B soil
horizon for TP-2. Human transported material (HTM), or fill,was found in the uppermost soil horizon
for both test pits.A complete soil evaluation for each test pit is provided on page 2 of this report.
ICE age
Figure I ,.......Soil Evaluations of Test Pits 1 &2( -I & TP-2)
.Wo ;vei Rl,a,u xv�r
a ra ni ,
'D ROAD
f ,
,
C�
�,
a
.m. � ,
I`
�O� :
Approx. U11m i'S o
11 o Ares
1, Approx.Limits� f
y r
n
om Bioreten'tion Area No.,2
J
to
o,
r
i
ry pJYV Ilr NNkPM1jRf.p
1 f W f Alppl
,;,ttrtvq'°
The following soil evaluations were made at each of the test pits:
• Test Pit 1 (TP-1)- Existing grade = 117.4±
0 0- 1 6" HTM Fill
0 16- 65" Bw Sand (Gravelly)
0 65- 93"+ C Sandy Loam
0 Redoximorphic features(mottles) present at 68"(Elev. 111.7±)
0 No signs of standing/weeping water
0 No refusal encountered
• Test Pit 2 (TP-2)- Existing grade @ edge of basin = 117.9±
0 0- 36" HTM Fill
0 36- 58" Bw Loamy Sand (Gravelly; firm in place)
0 58- 92"+ C Sandy Loam
0 Redoximorphic features(mottles) present at 61"(Elev. 112.8±)
0 No signs of standing/weeping water
0 No refusal encountered
III II II- IIr°&s m lid"n
d
/✓ "'JJY I v ryrye' r �I zrly' VVpp � r �77Y '�
w
G
w�
✓ f; � � //r�i�,l';y -'Al 1 yJlf r� r/ („„,d"VwN
Vrfl
✓ ¢s,yr/, /I GVl�l�i Iwy J w^U�'F f""�,
Image I -Location of TP-1
" r ,
yy�y
/�r 9iy iJJrir,,;,; ",Y, I, I r �✓✓�"r�wr�, r„�,,<r r� yN�°��v�
",if,l ay�yOlwr� � I
�uw ,
mwrN'ra�� �
4� a
r Jvw
V
u "
y W
,
Y
v y Q
I
1
µ ti
u
U n
,
i. 4
a e I
r, a;
I
ti
, r
y
d+
+r, a,,;rR� a'';,, ,y„D,,r. � r. �, �.� "�'' �, !"r �„d r J fi r(c rN n f J ��'/r�:✓d
,��(�/� ' '��'r N,q Ayrr, ,', �, MIN;,p,»w„, M�w,v y ,u,. :�i ,�br,;,- '9r'lr�J��r r�r ?��'�w IJl'Jr'JI�7 I,Wr,�i' l�f yr,�,;d;.r,u4'�',NIIN r•�/ �'N„'�w�,�",,»�"„,;,�rr"4;dr I NrII i
tl
r
s„� r V iU r I rN fr
W
I
r �
»�J
J Ar
r,
� r
it ar,
r
I
j
J tr✓�
1
➢fNr�r nc��P t 9d!r✓rrli rl�j a y��!'rr N( rNl ar;N
�I771
Wr"'Yl'�r t>'7.d dNoi�r ly�Ali✓c/ �a'DS v,§>r "'�yw
� "`y�w"frrr rpr�1 /iur rrV ud� f ly w�Jrq 4r i"r"r;Ilw
)AUK,u � �>wr ✓i y y r ly y r y rm °rn°1r
u.a I
I,u'vv
„Y
d-
In J> ro Ua" N I N 1
' d'ri✓/I 'N r.,DIP' rc,,,„ b v li II J o `k' / - °7uV
r"II"°' �""� wry yJ wr r I IuJ�n r md�v wYr
w
"10
',�rSa rr�,'(e�,wtlf✓�W�'WI�'�;V'fo>'M/ ��1' ,uf tt a;.,w�� y�,dv 1"m,°mil" '� r��i'�rr'��yy�ur.g'�".. II '�,wN o ;N„ �� r
rVih „i;' 1 +p' „!'"�➢ ��)r'el �,: ✓I/a r,rNr r 1Qyyr (`�",�'r":a rr,° Y,!( f"' /J fill,
r s✓ .,� - -,,,,,.,,n, ,, ate,„�.ai.-ev,v Npo�w�,��a✓.�"d x��uC �.: w„ .eN��,9,,,,,,as,0=,r�„„ ,�alo, t'.,�a�,- iN cr,,�
e ii°..1 III a ill ill ii ii,ri
3ag
".
I ���U IIM1 Iry
�I
VI IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII ,
d
I
/
I l a I ru.
I ,
I I
l,a
r
� r
r
/11 a
a J
,
r
Jl l r 6
a r��'�Jyr and � /✓+ v, I'6
tr
>" ,wi'n U.. rt rr .,�,i/,/�7frrJ�U7rrrilJ/i/ir�,, irynf/li ld��r' �fl°rign��'irj%r�„U v;;:
=,.,x
��r� /iiidi/ !wr✓y'�i% ,. r//t J�SrIPj�iG/�,�//r ,a,yd/"� �+lux�,�,F,ru.»^ir �,�;;,J
/1/wJ l�.J i//„r/' i0�%2/;,o/„,,,, ✓ r JfYrD s?'i,r r ;;,.r' /%;✓ Zvh uradrl�wrr �""� "r/�r� Ill9J) I
i////l,✓ I i J/,,,,,r- � i,r��,��i ry,,,,�;G ✓.,1 i/f�i,a r;,�r tr ;,, iJYVy r
/l p/i/iii,�r ✓,.. ../, r ,., f� /;,'.. �o ///..,��,,/�„r ,l„„_ ,. .,..,J„ �,r ,... uuluunwl
,.,/�ii///r/✓0.✓;,/✓//,.,,�� I„y„ >/�;�..,,I Ji,o//,,:.r, ,✓,,� / %i��///ice,1;,,,� ,;I..�r�rJ r, hlwimrr�
/e �. ,- �py� /I It/ J1/„ �, ✓� y �'"le��� `; ,,, I �';I rtullrtiWr,�19f���m
' 's� ,- ;� v, ',,�iy rfn n"/NYh rr ,,,0,l d fr r�%�'� 11ti G� I rJG�llr,,,-,-II�G ✓ ;r Y'�r�'r�tr dlf r,,,. uY:..,,
r rr r r
r r e ,vl/�rV/ r,,, ��,�. W1a./� 'J� /%p rrU�//// ✓�91���P�„%� rr"i;� d„fra;Y. IP rrri��Ull„ y`
,,:. '� a an,P�r;�Y r'a,»aL�,lr"i E x,;;,,�k;id�FY j�ri,/✓/„r. r�;l/rl�,S,,�r, �r,,: ,c,:..,I(r'„I"l y..0 ,,.r r
." ;:v� 1 z,, ul➢i;d „~,,�r,:,. ,,., ,,,;�rlrr,w.. r/,, ./,D� /P4 ;,vr,,;, ,Y4i :IV' I' A :�;,r�'w7,� r,Y,d d�1 r ,,,,;,' '�',„,, m ;bp��fr,,'"✓/ rr �/,�d fr„il �.;.J/"JlJl7h�-,rr/ri /,"./1 , �'� �,. n r, %r
� JU ! qrrr r. /,,J<,r��, ✓;�i �,, /rw6„,,,,;rvr61 vl u v 1�I r y
": i� r:, vYG,'�u u�"'`jr„;:, d,;;�df n, ;,�/1.. "1°;h✓ JJr ,r��1�1� �1�✓�,- ��„)..l r;��,,, v!nv r'r." (�n,i,,�r,41r,r Q r..
o s,'„r � !: ,,;yg:, ,;?�, r;,i ,�,°,'�! ;,,,,✓,,,,41d4y;,V:r /�� //,¢,JN-,� e, �dj�f V!';M';',,, '„ ,,!1 ,r;;Wd,°', / mw'.., ° ,II
,wr,..,�� ,;1 -,v„�-:;,a.. ,)�rv,.;�,,,, ,;, ✓r� °'. ✓�n V-,�;,rp���l I vl rvr,p IPd V I!f(a ,.,,,�,„� „,. 7(r I;duy;r�, r ,�"'. ,...„
ra,,,,,,,,,. ,�, t{I,.,, „,-,,,,r�� r. � 1 vrlf„p'vlll,.. ta✓ ,.inR r YY,i4�Ul II�I�I µd �r�l�'/?�r%„ -�✓ y "(d71';.. aIIIV� V"I �d;,ti*.,Ir i;r. "My nd,,,
�.:,V,�r ..llr +,ar.,.'�n'ti, �' -,,,.,,� �,,>�1/ �e�✓yJY('� ly r i'��I',:,;oV' I I.'inJ I ul�i;�,, I T „✓r, ,�,..'� .� Vl�t w,'`",r��'' r '��;r�w, g u�r r on„.i
rlf � f rfi;"`,/,.; ,�, r✓���Jrl�"'I,�1b:,. �n��i!�.,���„r,. � ( f V r d` ,, . �'�wv dr,r4v' �(' ,. µ`Ulu�.,,
ii; br f
d
I
I
ILocation -
,I..,
,f, �'a d r�V1'mi�re.��➢U�/i,r,�/'��„%r��f4 ��,�! u,U'r,"";Y:. .i ��l�""///�/li➢�yJ." y I , :.,. ,I ,,, H�'v'fiw%�i,�✓,,;:., I.. � �r�
�r„,,,;�;. HHrr�±�nlud/rt,r.,,,l r+,"0 rr rq -/� � /// % /i/>p,/J,,,,. , .,�,✓� �:w+%,,' m
/
�d
d 1
,,, „r.:dh;,w,1fi,r,.,,d,:„ ,, :I �l%',,,,, r•,m,�I U i/%%////��/i��ii/�r;nr �,„"I a"Wo,,;r/` �� J,r
,,,,,, wr��rrtwF � j %�,I,,,,,✓r, ;, r l�%i//��f/0✓��f r I� „�,ul„,.�!� ,;r r;. ,,; I� ,,i rr r�"�;, r,i,,,,
,i r., ?. '��„��r, „'i,��� � � �,,. ��"r�, I,,l,r 's4 IIII'f,✓.. VIW'�, pl ,� rr' ry
, r.;✓r�;,/F,,, r,i Ir� r<fl�'�II s W� I o '/Fv r ' �� V�
',,;",,,,, ,,,, ,,ruwh„ ,� a,".,;` ,,,�,'IIV vv, r 1, � ,,rr:, , .fir,P,; ra,'Jl.:";.�, ,w w",4�'�v,G °�Jd;JJf;'%,r„l"�J✓wU"r%ur JN`, ;r ys hh �d'w '
✓,�;ar ;�„„;r , r ,� ,,, e ...a,; w,,: r:w I �i✓ r:.,,4"III; �y„,a .,.., ,1,,:. w�'°,�r ���v7�""rr,Ir 1 ,p°.:r and
r,ndc,,.r d,r,,,;,, r„>',,, �r.,,.�,,w7 ry,;,,„,,,. � Id,. ,„14, ,p.: � ';,,�1 f du,er r,!� Yy r„w r„I r�,✓.:,�"�;,�,°".r r 7 nf� �«�`r
1 1,,,,Jlle o� ! r,,,, „, 1, d; r, r !iUr„p-,d r ,,ji( I�Nd",, �, .,,,'w auJ✓„ ' lw�a°an��/ I,:,i u
I//,,,;r,r,,. n s:.h,,, '„' ,,,,:. d„/ ,,,,, ,;;, „s o,"" aa.�', ,r;,r I ,�..d; !d',:fV�," ,."r' ,r.' N� r;.-, rr'" 0,,;,✓":. :roU".d...:; '�,.,.": ,rr,yN,J�1(^ 1 yAl.y.,
lv✓rr+M,,,.;,U✓,�r..: r,,..,."..r ,,,,,,,r?� ,:.I ✓ , ,. .w ,,�r ,,,.ay{,y .rw'r v„I�;!d;.,,, �,,.; f N,,,,�.;,r,r/ vwv' ✓.P;,,,�r.lu ,(i,6V ,. ,,....
d�v,,p;/JY v 'kn„,�! ,ri dr.r,. ,..�, r o),d�I,;a=,✓, ,r ,, r.., ;19. F��.,t"l'.. ,, ,. s ,r,. w I,�:'.JJb„ r Di ,VNd °,i/
�%"wl
Iri,,,;"i „)1... „m.',,,,,p;u� �'N✓-Ifdr f,.. a,,,!�Ir BOl d, .dJ p, ;, —,�. 6.;`.,.;r r,l..�N�fltl;" " ,y „-�I, ,,,,r�r,:' ,, Y' a. ;...I
r;lvi r rv,.o,id 0 U r ,Yr 61r„Pn'rill'"r,v, �rrdyrl J fju,; r rer ,: q r J a" � f, �l'Er d(, `�;"J u^v✓Nr„,Jar Yr�l�jdyJmr`,�w
imp
v r/'l�ur 9 r',r ^1 w r,,-;.;r f(��,;ry ,Ir^r v,;';,,, ,I°,..,, iv vlJJy a Ipdyj,✓(ItlI N'�^',�/�v��f(FF,n' F �r fw"r dM
lossr
k' 0 nn/ fwl
y f 01�M P P
�'� I U rP�;ll ✓ fWN1 ar'r r�J��J�� fi
�,' if o. /r II ;� ;wl Doll°Ilc 'p{9Vp"'✓JR�� I
r d. ,,r Mp d JI � �III ✓r rr�
j � �o �Nx(f,p ✓r!^ir IV�l �"rw+a O�Y'"
W,
p
"/i Nr �n"7 d rc� �N,w+m;�"�'"'"'/r r wrw5r�r"✓,�
I � pol rrd
I. o rJJJ yrurl
r o wiif p J�OGsdv '' I'J� I N;(d� F�IH
, V /✓ rin 1 "r� M� �I�� P�
d4 d J
r
r1 I
u'
l'f �
„V�i i I r r r�".. ,��r';' � �`' /." � 1��'J ��`r� � F /a�/ f rr/�i/O/�✓.,;�'
I f � �c r ✓ rn /
it d �/ �a✓� rr?� f r d�n aki�1} �tY/���� r„„V �I�/,
r
✓ r � I i' � I, H rw m lli �i a rw"� n,����;�
I / tr.n f« rJnd r�''"'CXn%✓ ✓,� yr yf r ryp�ri{,„a
J erg r r r!r 'nr pda�f 4 d rJ "/�r p�Wrrrr,wUd � a`".
r I �
P11k�N
f GGG
,.. r d✓ �J! �w d
' +,.. Gy ,, �,...f+'(�'� n (� //W r ye r/, ✓nv r Uw�l/!�r�,.J � �dH l'bdd l d!�� �'mow lul�0
f 7�a rid✓''r 11 r ���dr Iri��`J,yd V rr fyq�'qX��,,
4r'r1'"IuYdtt��,fl� anurdUfJ6d✓>;p:lnv"'Ilrr,�r%��Vr��l��r�,
D„) v Jr d 1l P/rvr✓i r f rr ry r w I
/��J y r�..rl vlv ,✓u))'n�.1�h'""1�,
,nDa,/ r l./. r rgJf l" I v' r r d�Jr %�P ,rynrV od Il�r r�LI ,Ilrn /
rgvUw9
„
nd��/�irlq„��XI"JI
r �`r�ji,yry;:ifrrvwr�,„ N D' d'n`„ ,, rd�/�i������ y��/��,U �,Fiu-�l Jn�l'Yu�J ry,r�°� �r✓
r Ig
r /i /irrr A 1(IjJ r+h l p
{- � .,. ,;'r w J, P„ ,r l��ll�� %%JU I rid djd;��r�/��d�I�n�r� d�o➢y1„WI II✓�r�y'�I�,/��° Y, ePd�;rr,,,,
d / ✓ �,, 1, l I� 4,„ ��;d �j�r�i r/�rl�Jt J/✓pr�vli,w �'/ ��r��G 'U J rt gl+l M1'd�"�!��d�i -N
�r�r�H�ii
i
r". ,Io%;, i"I✓, dIU ,,,J,x- ,sr i%i .. r✓r )�l f'"/��� ,jl°Idl cd lliV•I A&r���f
l.dr , �;; i'�.r ry r.n d,js, '.`w k/ d,�A'rir.dYd,,,IG,r 9✓VU�I,(U4,rrd/ r&„rwr!,,,X rrrvlrl/,xr9➢rdv' .'Jr thyV'DI �� IIfJ
dk r
I%a
�r r i�f �n���NUr
III Ifllq '� t. ,
Ilr� „� ��''I r Ar- r✓en. ;, ;, /,. a�f ri!r�.a`�� Ir;,l dr f y�'� ,.r(: r'4r dri�,{w: ��a ly M u'.�r��n, I',7��a
' ,,�(r 1 u „,A.✓ s r.V H J n .r I O�,I�r.� /;'F;r r�y ,: aJ J`^r G'v'rPq'd�n:,
�,,,rrV 1�
"
,.,r n�ad..,.y o-rf14lr,�r`,';,",,ir�,.I � nJ�/:,Ir i, ,,. rlu� d .A�Jr � �,d��It�i$v✓�/l� I �� U1�W VW�f �✓(N�.,%d..,.�ro�!'l,,,r,l /�A,lJa�lu�'�„u�'�'�y�rr,im a r�PoJ,r,H F//e2�11�n,J/rr,xdv�n�+'w.�4m,�.r�'li�v.�.
l Evaluation of TP-2
mum
.................
A..............F..............
I�R,evilSed 1�lra'i�ir,iage 1�............ayout airid de 'kl�s
rFBENCHMARKI
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
INFILTRATION BASIN RESET UY WIRE 1 25-25—
25—
7
Bf&RE+E++T+G++-AREA NO.1
INFILTRATION BASIN
0.
B+eRE+EN+KMAREA NO.2
—25—
—2 _T5
FZ OHW--- Z Z F1
-T- 44 FZ FZ
FZ F7
4-
FZ
jo
Fz RIPRAP-LINED SWALE
ONE WAY SIGN NATIVE
-r--18.0
Fz _E_NQH1%%ARr.v M PLANTINGS
SIGN"TRAILER
BOAT RACKS
TYP.)-MIN.5'
PIK 30.0'
4-i�-ff-: - J:�t _4�-PARKING ONLY"
(6)8'X20-BOAT RACK
T 7
RESET MW COVER
(2)12'X20'BOAT RACK
p RESET MW COVER
> S�25 25_T_ ++
8'WIDE BOAT LAUNCH WITH ONE Y zt 25 25
2#
7N
"NO TRAILER ACCESS"SIGN + No DISTURB ZONE
REVETMENT(SEE DETAIL N 25
SHEET CD-5) (2)LOCKING BOLLn�RDS'
G ———— C
MIN.8'(TYP.) RECYCLING
TRASH AND LING R
II + 01
RECEPTACLES
R54 0'
—�N
ONE WAY SIGN
�oHtN OH _ _0�1--------- OHvv
OI:ivv
OHW
2
v.
-T-
8'WIDE STONE FILLED PERMEABLE
5
25
-er.
PAVER BOAT LAUNCH WIT
H 12% -2 SLOPE(SEE DETAIL SHEET CD-5) VZ-
NATIVE TREES 'H
- , v�_' ANDICAP
------- (TYP.) RESET EXISTING PARKING" WOOD POST WITH
-s-'O
ROP
KIOSKED FENCING E
MSE BLOCK WALL Avy 4
(SEE DETAIL
SHEET CD-5) K
----------
BENCHMARK
REMOVE AND REPLACE SPIKE 01
FENCING(TYP.) EXISTING STONE ROCK BANK '6
BENCHMARK ALONG FACE OF WALL
SPIKE
ELEV=109.32'
LEGEND
IA
LOAM AND SEED DISTURBED AREA
GRAVEL FILLED PAVERS
---- GRASS FILLED PAVERS G!
BKRFTENTK*A�INFILTRATION BASIN
REVETMENT
RIP RAP
L)
PLAN
SCALE:1 20'
8-1-4 FEMA FLOOD ZONE UPDATED E
1 Scale 20' PERMITTING
2 8-21-24 RETAINING WALL RELOCATED Date JULY 2024 NORTH LAKE COCHICHEWICK BOAT LAUNCH
ENV I RO NMENTAL Sheet No.
ftm j,
Job No. 22003302
TOWN OF NORTH ANDOVER,MA
o
CIVIL Designed by THIS LINE IS ONE INCH
I..SfT,27
LONG WHEN PLOTTED AT
OF Drawn by AES FULL SCALE ON A 22"X 10 PARTNERS 34"DRAWING FIG. 1
07 22024 Checked by RJP SITE RESTORATION PLAN
An.1'1_0 ex C_---o�m
MARK]DATE DESCRIPTION Approved by RJP
OVERFLOW SPILLWAY
OUTLET STRUCTURE TOP ELEVATION
�:: V/
\ SEED BASIN BOTTOM AND
302 A8"OF Ble RETENTIeN Pfl ANTII.G Cell
SIDE SLOPES WITH A FESCUE
12"OF MIXED NATIVE SOIL WITH SEED MIX OR SIMILIAR
COMPOST 2"3"OF.,P�GAN-1C.a"rotor
3
7:1 SLOPE(MAX.)
UNCOMPACTED SUBGRADE
OUTFLOW PIPE
BASIN
INV.(OUT) ON BOTTOM
--eam"TEXTILE WRAP ALL SIDES
MIN.6"OF 3/4"-WASHED STONE TO EXTEND
ACROSS ENTIRE BASIN BOTTOM
A Al TYPICAL BIO RETENTION A nE A DETAIL
12" R9" 2' SCALE:N.T.S. I N F I LT AT I O N BASIN
�_ BELL
NOTES:
1.PLACE SOIL ADDITIVES ON THE BASIN FLOOR AFTER FINAL GRADING.SOIL ADDITIVES SHALL INCLUDE COMPOST,
PROPERLY AGED TO KILL ANY SEED STOCK CONTAINED WITHIN THE COMPOST.DO NOT PUT BIOSOLIDS IN THE
COMPOST.
2.MIX NATIVE SOILS THAT WERE EXCAVATED FROM THE A OR B HORIZONS TO CREATE THE BASIN WITH THE
WITHIN PAVED SURFACE BEYOND PAVED SURFACE 4`1" ` z' COMPOST,AND THEN SCARIFY THE NATIVE MATERIALS AND COMPOST INTO THE PARENT MATERIAL USING A CHISEL
LOAM AND SEED 1 PLOW OR ROTARY DEVICE TO A DEPTH OF 12 INCHES.
SEE SURFACE RESTORATION
SCHEDULE ON SHEET CD-4 12 3.IN NO CASE SHALL THE LONGITUDINAL SLOPE OF THE BASIN FLOOR EXCEED 1%.
REFER TO PAVING DETAIL 4
SEE DETAIL ON SHEET CD-4 -EXISTING GRADE 4.STABILIZE THE BASIN FLOOR AND SIDE SLOPES WITH A LOW MAINTENANCE,RAPIDLY GERMINATING GRASSES,
SECTION A-A SUCH AS FESCUES.DO NOT SOD THE BASIN FLOOR OR SIDE SLOPES.
5.NEVER PLANT TREES OR SHRUBS WITHIN THE BASIN OR ON THE IMPOUNDING EMBANKMENTS.
FLARED END DETAIL
\ \ \\\ SCALE:N.T.S. 6.BOTTOM OF BASIIN SHOULD MAINTAIN A TWO-FOOT SEPARATION FROM SEASONAL HIGH GROUNDWATER.
PROCESSED
GRAVEL
(SUB-BASE)
TACK COAT EDGES
OF EXISTING TRENCH \ j
PAVEMENT
�j
BOLTED BEEHIVE GRATE
UNDISTURBED EARTH \ PAY LIMIT \\i€ EJ 3700 O GRATE,OR EQUAL
�� SUBGRADE-COMMON FILL OR
\� ORDINARY BORROW BOLT HOLES SPACED
NON-WOVEN
EVENLY 120°APART SET CASTING IN GROUT
/
FILTER FABRIC
a
4"MIN.THICKNESS
12"MIN. 24"+1„
OUTLET
_ PIPE N N
0 0 0 4000 psi,4 in,610 CEMENT g 5 MINIMUM WALL THICKNESS °
CEMENT CONCRETE OR
PRECAST CONCRETE o
SECTIONAL PLATES000000000000000000000000000000000aa oaoaoaoaa°
°
CRUSHED STONE PIPE O s O NONWOVEN FILTER FABRIC \\�\�\r 12"(MIN)OF 3/4"CRUSHED ;
BEDDING(INCIDENTAL \\ \J STONE 4 0
TO PIPE ITEMS UNDISTURBED EARTH BEDDING UNLESS
O O n n 2:1 SIDE SLOPES MAX
o o o� 3'-6 OTHERWISE NOTED
U
O�O�O O O O / 12"MIN.
0 0 0 0 0 0 \ 6"MIN.
BEEHIVE DETAIL fi% o RIP RAP 6" o�
_ — SCALE:N.T.S.
12"
NOTES:
1. THE FINISHED SURFACE OF THE PAVEMENT,AFTER COMPACTION,SHALL BE TRUE TO THE
ESTABLISHED LINE AND GRADE OF THE EXISTING PAVEMENT.
UNDISTURBED EARTH/
2. ANY GRASS AREAS DISTURBED SHALL BE GRADED,LOAMED TO A DEPTH OF 6 INCHES AND
SEEDED,WHERE NO GRASS OCCURS USE 6"PROCESSED GRAVEL. \ J
LINE RIP RAP WITH o
3. SEE SPECIFICATION SECTION 01024 FOR PAY LIMITS. NON-WOVEN FILTER FABRIC m
NOTES:
1.RIPRAP SHALL CONFORM TO MASS DOT STANDARD SPECIFICATION M2.02.3.
U
DRAINAGE TRENCH DETAIL RIP RAP LINED SWALE DETAIL
SCALE:N.T.S.
SCALE:N.T.S. Z
a
[INVIRONMENTALScale AS NOTEDPERMITTING
# NORTH LAKE COCHICHEWICK BOAT LAUNCH
Date JULY 2024 M
TOWN OF NORTH ANDOVER,MA Sheet No.
n0iF
Job No. 22003302 0
71
s Designed by JLV THIS LINE IS ONE INCH
r
PARTNERS LONG WHEN PLOTTED AT z
t Drawn by AES FULL SCALE ON A 22"X
34"DRAWING
�7FIG. 2
222024 Checked by RJP CIVIL DETAILS
3 `` MARK DATE DESCRIIPIIIum Approved by RJP
0
A...............�l............................ ...............�l.............. 3
ot o 1�............og Of C,�.irystal� 1�............a k",e o at �.............a u in c I,i
Page 1 of 2
GI";� rror r,:�'-r,% ,,,uv+Hi!✓^l�(Y !"i /0 sri�(w� ;'�.1, S r�' r(�l' mif Jr�..7!/O /'/,�Y� ,, "
v�,uJls1 sir: rvv rr a"✓,,,r((/,,ri,,r, � ern�+ 'wjilln,`;a14�i r�/" fly�/I,�„rlflui�Yr4//ri/ri:, ���, ," W d,,!
v�- ,,y„�r// ,uvG�';.;,,s,&( �u;K,,n p wYu ,, I;� �'i G rr�kVf rlj!�f7rVh,�/u y,1 i�ryf� ,,�✓r!� ,���rr
fr,r' rr ,,,'! ,r�.,'rrr �,wr..w y�;,✓r�'p,�,,�A r� ���~���%lr�''r� r�,%///%��11`�rr!I' I,;�/ko,,,,ru�'�c!6u"° v���.m������odi.�(�0 IIll�i�ihed�a �f,,rG,�r�n'n,m �f�,�i�;�r/lr�,y,✓r//r(/�/J I �/�1�,. n ,,
r
���'<�,„ry,r �ll�n�r�„���)%�y�,kr�0�k r/ir✓,�?l��r��,` i �/ /,�ji/,�; J�r
/ r
wry; ,, I 1/' ✓c `r///�I��G� r^^ruk�((��(� /(((( IOIOIII��VIk��l�lll(�Ikl In,r�N r / ^ro�o"//%%� i�, „�.,
fir%
V p
rof
P =rd f.(f
I N Y" 1,
it
u I
��� ,I;II i.V illl III�i�I �if�v i�i l!I�„i��� w,,.. ;>r�, r�// % ✓ �i,,,,, .� /�„ ,...E,%//f // „r,v, ,,, a1 f
, a�n®r� r � r
�
y�R f r r r%lea rw,
„/ " �, r /,uwA✓�ry{awru�r 4"1 i
w
a
N w
a
r
,wryer r
u"0
..I 1
VI, F
a III �
r'
0
f
1
l 4 PI
f'i'nil
1 51n
uu'InII ll//vi
/
;r
A
u�akr llu,rYyr awtw � 6
;y1
i �vuor,
� r
s , P
a
ul "
Crystal Lake Boat Ramp
Peabody, MA
N
O
N
ro
\ \ Mf
\„ \
LL OR
Al
SEEM
fflz
MI
\�\ Io
OME
\\\ \\\
71
Iff
- - -
II
om 1,01
ti
e,
\\\
� O
� dJ
U �