HomeMy WebLinkAbout1996-10-18 Engineering Review �w� .31
rx
Novenanber 1, 1996
Ms. Kathleen.Colwell
Town Plaunnaea°
120 Main Street
North auuiunver, l 01845
E- ualiple-,mcaatal En ineeu':ian Review
ie
Merrimack College
Site Plan Suhmittal
Dear Ms. Colwell
At your req uest, Coler & Colantfanio, Inc. has reviewed the revised plans and calculations
for the above referenced project. It is our understanding nndin that the project has received
atutw oval fu•a,.nn a (lie Planning Board, Our review addresses issues wbich should be
addressed prior to or ullwing,,eanua.struueti0n, The comment raunuraberaua seuluuence lbllo s the
order of our original report,.
e offer the foltowing eunnnnmeants.
l, No eunnuuaruennt required.
2. Satisfactory,
,
3. uatistlktor .
4. Satisfactory.
5. Satisfactory.
6. We disagroc with Rielnarul I,. Kaminski & Associates response to the issue of grading
for the swank We note that difficulty with grading tlae s ame will likely result in
problems fuuu Mcrrinunaaek College relative to puddles in the s ale or encroaclunclit, on
the wetlands. "I'"Iris .area should be reviewed during construction for conformance with
the design.
, uuti-,44Qlor „
8. We recommend that the trash rack be sliopeul to ruaininlize accumulation unl'ulebrls and
that the opening size be specified.
,I,,—,,,—,,,,,,..... ...- ..
101 Accord Par l)rlvr-, 1,i,ljkp, rqc- (11 7-982-eAOf
Noa'ell, MA 0'u(i 1.,-1(31,35 I°sax.; 6 1 7 '982..:e;�190
. We disagree with Richaid F. Kaminski & Assockw!e; response to our comment.
Please see the at shed photocopy of the grading around the detention basin.
10. Siiace the dorm drain is on private propel•ty we def' r to the owner relative to the
ac'c:eptabiIity ofthc proposed pipe cover,.
l . Sa€isfactor .
We appreciate the opportunity to assist the plauning Board on this project and hope that
this information is sufficit-m for your-need.,;. I I' ou have any questions please do not
hesitate to contact us,
Very truly yours,
COLER & COLAT TC NTO, INC.
c OL-'L"'
h f'. Cjicssia, '. .
xe Diehard F. Kamimiki & As%ociates, Inc.
n
os ION C FENCE
WTRM�
�'r
IDETENT
ION� I
100 Yft °PONDING
DETO
OUTILE,
•
__ .
n
ADDY
IN 01
POLL
CCOT
"
N
I
I�
M1
e -
„ IN I
y � P
m
1" !
�� A _..,, •v�ls D '
" D�',
"
yyrr „
"� ,"
"
PRM
, w
,.
• FOR
ITU.
0
�' D.
„
^" 1W 2011
°
h
A m a p;^-
WJ 'ram Y ` W .. '� kM, )r1aM '�r �"N�nI�.,u� �I•"OI�IQ�'FI��
� �"ids � � � °�' A �4 � i �M• •
PROP' SMH.
I 244.E Al
yYW� OUT DEW q �A,P
it w RAP b' -f., � '''� •M "� w "`
•
A " "i.
"
-77 STEM, IN
JU 'NO DISTURB
" INT ZONE
� D
° V M�
w
c. l�
i M4 W
w n
1y i
Av.
9E � , ,
40
'I'�.y1 ,gyp
,pJ 1 y�1
t
., 14
","STAI
U
14 F
&'-:4,/25/96 10:47,
COLER &
00 L/A-\NTUNI0 'z"
Squc,11aber25, 1996
Nk Kathkem CoRell
Awn Phnmr
12D Mah khrcet
North Andover, MA 01845
RE�: Engineering Review
MerTiniack,College
S i W Nall S Libim itta I
INIS., Colivel 1:
At your request,(,'olar ek Colantonio , loo has revioYed the plans arid calculations for thealb,ove
referenced project. Our review specificaly,addressed (Indnage imteF,Rs%)cia(,c,(j with the,
prqjcc,f. This is A r'e8JLItt UfthC 200vic review and iiicludes, otm, COIIWTIellltson, the
submittal package. The hHowbg dociuments were. revieiArcd:
A set of plans entitled "'Proposed Rcilhis Administ-i'ation Building and ('iarzue on
the Cawnvus of.N4erNalack Wlege Wth Andbwer, Adass7prepared Wr NArrBack
Wlege, prepored by Rkhwd FMatninsk! & Associ�tt,�is, TTW- IuIsl lvvised 9/3/9'6�
A repm mided "Ehrainage Naport Merrintack College Norilt
prqmxed Rkhmd F. Kmninski & Assowiate% Inc. duted August 3 1,
1996.
We o Ler the fol to wing com m ents
J, 'I"W pamd is located On the.NICITiMaCk WINge eampus near MY mhommm w Wdes L IA
and 1!?5. Rt�,portcdly Te ama. is cummaly vmode& Soil boring mformation a
shallow depth to gmumlwawn Tt is proposold to relovim, ,an eximotp, im6ldilw ml)11 """cmstruct a
Imaintemance garage, Runoff w0ldd flow overhand ioswalics whkh would (firect the,,, rumffto,
m pwpowa dumumn nma.
2. The Comen;atio,ri Aw,ukf review the wetland hill Its,
I ]Me pmpmod Wmerlight piwast comerete manlwle" shot.ild be h,,, the Hinartl cif
Health. This type of Mcnwe mqukes appmwal through the Depoomm A Whemmiomal
Protection antl locril Board (A'A
4. Wern appears to be a conflict wfth thc puVowd sewet mmMole and the exmnng muml gag,
linc, on the Alcott Vilkqg Cottdominiwn property.
5, A Subarea plan %�vas not provided with the submit0i]. A sjitlxjtv,ak plan is wi c:valuatc
the MIYA TUKI e(1,01paFe Pre alld post construction condifions. Although it is difficnIt to.
evaluate the figtnes presented, CN and, Te valkm!t appear
10:4 q P C1 10
6. A du ail of flic,swaile along 111'e, nord"Ierly "jdc:of the Paveinent and at the westerl'v cover of
lhe�patn veient, ncatr flit, dotention Imshit should be provided. Additiotial 'Spol gradcs shctijld
also be indiciteld oil the plan to demon'strate The pitch of'tile, Swale and c Varr its the
construction, (haditig in 111m, Ckv('I alvazi is le.�Ilxiotvkl by wulfagid is,Ltback6 and thc proplosed
pave�rlielit him its., It is unclear why suiclia large expallse of pavelimit is necessm-v fort- the
park i n g propused. It may be d es,i r-able to ml uce I lie p;1 vf,,ni�etrl o&((tn 6 1 q01 0(� 4111 s to
hlij,'Wovc site grad I I ng.
7. Oflcmfations for storage VOIA1111112 iflClUde volume belovv the outlet inveit. �Ve reconiiiiend
that tile design include no storilge volunit below flie oudel, invell,
8. The outlet struclure as ci�sigtricd twill bo,larhrrtuw to Q logging, Given the high Water table in the
area the deund.on bagi.ri will likely de'ViAr"T) into a wetland,, This will result in infi'-ectuent
O'naintattanice, 1"e. cutting of vegetation and, a builid tip of material at the outlet structure. Thie
desi gn shoiflid include provisions to,prevent clogging of Tile (Dutlet struclure.
1). No,demils have been provided for construction of the dike for the detention bitisin. It appears
that the top of the dike is aimalelly,vim,) feet wide in. some locatiotts. fit addition. access
fume equipment to the ittiet and outlell should be providled� We recommerld that ftwnfion basin
dike i be &4ned conaisLell't with guid6me's in ASC'E',Man,mals and Rfpms err Enpincering
Practice No. 77 "Design,and CollStf-LICtion of Utban SYstelm"', The
dike also provides no, fiieeboard. The natilleasterly end of the detenticni basin is at elevation
23 9, wh I c h is the, 1,0 0 year floc c I evat ion Typica I I y' 11 one foot fi eclluiw.l to id ed. I[I'L,
OkIliculatiotis fbi-the outlet structure over-flow indicate a flood elevation of.239,6 wbich would
req:ult it) uncontrollet] flow ovej.-the side. A slone rip tail) eniergm-,y spillway should be
provided to direct the overflo%% to a stabilized ineti,
10. 1 lie ptopictsed 12 hich storm dIrain 011oing Ole wviterly side ic l"O'w gar�.,itx hat,' igiblc u,wer
Orading should be revised in this area to provide adequate protectiott t6r the pqiQ,
H. ThQ 23 7 Otmilour is nij!0abole' in the detention basin.
W ,iw apprcc,;iate the opportitnity to assist the Planning.Board ort this pro ect ind hope that fins
inforniation is sufficient for YOUR,NIUC&" lia)"t, anY quem:11011's Plert'se dow"�� to
01111ALt Lh
Very 11 k I,1Y �oi 3 c s",
C( LA.& COLA N'l'OIN 10, iN'C
ohn i w tar saifu, PAI,