HomeMy WebLinkAbout01/24/2020 - Langan Response to Weston & Sampson Peer Review - - 1450 Osgood Street itm Goldberg,Chair
Planning Board
Febxuary 18, 40
1. Memorandum,,dated January 24,2020,from Tien 0 9Neff and Nate Ydr ehn r Of
Langan E,nginecringto Timothy J,Wfflet,OPMUOnsMaDr,Water&Sewer
Department(Response to Weston&Sampson Water System peer review letter, rated
December 10,2020)
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BOYMOn StmOt Sum 510 Boston,MA 02199 T* 1 424-9100
To: Timothy J. WiIlett+ DPW erations Manager Water �
� � Bwer Departent
Town of North Andover
From: `>-in "Nill, P.E.
Nate Kirschner
COPIED: Mac Casey/Hillwoo f Enterprises, LP
John S of Smolak&Vaugh are, LLP
Michael Rosen R1W
Date: January 2 , 2020
e: Response to Weston &Sampson!Water System peer review comments
North Andover Fulfillment Center
1600 Osgood Street, North Andover, Massachusetts
Langan Project No.: 140182701
Enclosed please find our responses to your peer review comments dated December 1 OF 2019.
Below please f ind each comment followed by our response in bold.
!Laoter jaftgstruZure Review
. The domestic and fire service line connections to the existing water main along
Osgood
Street (see Plan f rawing Nos.C U 103&C U 1 )shet be performed by the developer and
riot by the utility company as noted on the plans*A tapping sleeve and gate vafve assembly }
shall be installed for each connection. Test pits shall be completed to verify the size and
ateria t of the exi ti ng main priorto 1nstaIlation.Tapping sleeves and gate valve assemblies
sha II be ma n ufa ctured by Clove Valve Co., Mueller Co., or Am erica Valve and Hydra nt. f n
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addition, scheduling the connections shall be coordinated with the North Andover Water
Department artment(NAWf so a representative from the NAWD can be onsite to oversee the
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connections and perform a water shutdown as Headed. s
Comment Response: The callouts on sheet CU103 have been updated to reflect
that the contractor'is responsible for the installation of the domestic and fir
service
line connectons and not the utility provider. A note has also been added to
the i
Utility Notes Sect-on of sheet CS002 reffeetiffng this. Sheet CU106 does not show
any proposed domestic or fire service lime connections to the existing water main
along g Osgood Street, Tapping sleeves and gate valve assemblies have been
identified at each connection point. motes have been added to sheet CS002 under
the Utah Notes Se Lion to reflect the fol oWing:
• Test pits are to be performed prior to installation of domestic and fire
service line connections to confirm the size and material of the main. }
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Topping sleeves and gate valve assemblies shall be installed at each
domestic and fire service line connection and shall be manufactured b
Clow Valve Co,Mueller Co,or Arnerican Valve and Hydrant.,
Scheduling of all domestic and fire service line connection work shall be
coordinated with the North Andover water Department A D)to allow
for a representative from the NAWD to be onsite to oversee the connections
and perform a water shutdown as needed
, A now buried water meter vault shall be installed at the property line for the
proposed
ornestic and fire line connections to Osgood Street(Plan Drawing No. C U 103)to pass
through. This vault shall include a compound grater ureter installed on the dornestic
service I!no and a FM approved fire service grater meter for the fire service line.A se
new buried grater meter vault shall also be installed at the property Brie for the existing
dom estic water rain con ne do at Osgood Street(PI an Drawing o.C 106).� Ii meters
sha II be sl zed based can a nti ipated usage and revie gyred by th e NAWD once do M 8StIG and
fire water main sizes i9re finalized ed and anticipated site demands are provided. Water
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meters and associated encoder receiver transmitters ( 7) shall be suitable for vault
installation and be compatible with the To 's existing itronr Inc. mobile radio automatic
meter reading (AMR) system. Equipment and materials for the meter vault and
appurtenances shall be submitted to the NAWD for review and approval prior to
construction.
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Comment Response: Buried water meter vaults are now included In the revised
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documents. Each vault is identified as a below grade compound grater meter vault
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and can been found on the sbeeft referenced above.A note has been added to the
Utility Notes Section of sheet CS002 identifying the ERT equipment to be J
compatible with the current town systems listed above and rated for below grade
operation, A note to tb s
sectionhas also been edged stating that the eipent
and materials for the meter vault and appurtenances shall be submitted to the
NAWD for review and approval prior to construction.
3. Ductile iron cement lined Class 62 water pipe shall be used for e11 new water mains 3-
1 nches "n diameter or larger,Alf new ductile iron water mains and urtena ces
p� � $ 11 b
encased in polyethylene (PE)--encasement in accordance with AWWA C106. P
encasement shall be installed in accordance with the manufacturer"s recommendations
for wrapping ductile iron pipe,fittings and varies.Fittings s ha11 conform with AWWA C 110
or C 153 as appropriate,gaskets shall conf orm to AWVVA C 111�a nd joint restraints s ha II be
Megalug style by EBAA Iron Sales or approved equal, The required length of restrained
joints from fittings and values shall be ire accor # ne with gable attached .
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Comment Response: Noted. The additional details will be included in the final
pe � icaflons issued for construction. The above will be Included as a condition
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approval for Lots A,13,Or and the proposed subdivision way.
. All now water mains s ha 11 be pressure tested in accordance with AWWA C600.Chlorination
disinfection and flushing s lull be in aacordanca with AVVWA C65 1.A]I flushed water shall
e thoroughly neutralized as it discharges from a sample tap or hydrant. Bacteriological r
LANGAN
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Langan Project No. 140182701
January , 2020 Page 3 of
sampling and testing shall be conducted by a certified laboratory fortotal an
� dfeoalcoiifr
nalyao s of potable water. I esu fts of the pressure bacteria tests s hall b e provided to the
lAW ,
Comment Response: Noted., The additional details will be Included `
nal
s e if cations issued for construction.The above will a Included a condition cc�nd�tron
approval for Lots A,8,C,and the proposed subdivision way.
4 All water service lines --inches in diameter and srnaller sh lI be contln
o us Type lannealed
seamless copper tub!ng suitable for potable water in accordance with ASTM B 88 unless
otherwise approved. No service lines shall be sma Hor than 1-inch Copper t ubin g alp a 11 be
connected to water mains using taper thread connection corporation stops with
compression outset connections. Corporation stops shall be cortif ied as lead free and
manufactured her Ford Meter o>� Red Fled Manufacturing, Dueller Co.,or Hayes of Zurn
Industries, Double strop service clamps shall be u od for all 2-Inch service lines*A curb
stop sh utoff and associated box shall be provided for each service line.Curb stops shall be
certified as lead free and manufactured by lord Meter Box, Fled Hed Manufacturing
Mueller Co., or Hayes of Zorn Industries. Curb boxes shall be Erie type extension curb
boxes with arch-base and lid with pentagonal plug, The minimum inside diameter
of the
upper section shall be 1%-inch for 1-inch service lines and -inch minimum dia meter for
1 Y2tinch and -inch service litres,All boxes shall be made In N orth America end S Uppiled
with -inch stationary extension rods with pinned connections to the curb stops.
Comment Response:Callo ]have been updated on sheets 1 and 107 for
water service lines 2-Inches in diameter and smaller t e Type K and copper. Curb
stops have been added to shut CU 103,The additional details requested above will
e inclurdsd in the final specifications issued for construction end
ill be Include
as a condition of approval for Lots A, B,C,and the Oroposed subdivision va .
. All water gains and services shall have a minimum of '- "' of `
cover. Insulation shall be
used for any mains and services receiving less than " "" of cover. Insulation shall be
2-
inches thick, Foam glass" style with jacketing as manufactured by Pittsburgh Corning }
Corp in accordance with AVVWA C552.
Comment Responses The above design criteria has been added to sheet CS002 F
under the Utility Notes Section. The details above will be included in the final k
specifications issued for construction and will be included as
condition of
approval for Lots A.Or C,and the proposed subdivision moray;
All water maln andservices shall maintain a minimum vertice I se pa of� i
p n chesror
other utilities with strict adherence to this separation for sewer and drains lines in
accordance with MassDEP's Guidelines and Policies for Public eater Systems,, If
adequate separation is not maintained, pipelines shall be sleeved or encased In flowable
and excavata ble concrete. In addition, no water rains or services shall he installed within
th e sa rn e tre nch asotherotiIiti as.Arvinim urn of -feet ofhcri ontalaep arationfroms war
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or drain lines shall be maintained.
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Comment Response: A note has been added to sheet Mon under the Utility Notes
Section to reflect the above,
B. Water flow 'solailon valves shall open left (counterclockwise) and be resilient seat gate
valves In accordance with AAA C509 or C515 as manufactured by Clover Valve Co."
Muller Go,,American Valve and Hydrant,or Waterous Co. Valve bones shall be cast iron,
adjustable sliding heavy pattern type with f large on the top of the section,minimum of
1n chas in dlernet r,made in Forth America,be stamped"WATER on the top corer,be dir-t-
tig ht,a rid fully enclose the gal a operating nut and stuffing box, Flow isolation va Ives sha11
be in staIfed on all water m ains a minimum of every 1,000 linear feet to hal with fl shin
and/or �
to isolate areas should a water in break occur in the future. Each tee(excluding
hydrant laterals)skull receive three gate valves,one for each run end and the branch,
Comment Response: Notes have been added to sheet CS002 under the Unlit
Notes Section to reflect the above. sheets CU104,r CU Io ,r CU 1 071r and CU 10
eve
been updated to reflect the appropriate Isolation valve locations.Additional details
above will be Included in the final specifications issued for construction and will be
included as a condition of a provall for Lots A# 13, C, and the proposed subdivision
ova .
. For water quality purposes, the developer may +art to consider a dd i ng flush1n
hydra nt
along the domestic water mains for water quality purposes if ind[viduaI build in g demand
is low as the domestic water ma1n is currently sized as a 1 2-inch dia m etar pipe.
Comment T spons ; A flushing hydrant has been included in the design on sheet
CU104.
10. Hydrants shall open left (counterclockwise) and be Eddy F-2640 with drain a
manufactured by Clow Valve Company. Hydrant paint,shall be orange (barrel), reflective
white(bonnet and pumper nozzle cap),and Wac (side nozzle caps and operating nut),All
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fire hydrants shall receive an l olation valve along the hydrant laterei and a m nirrnuM of two f
protective bollards. t
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Comment Response: Notes have been added to sheet CS002 under the Utilityk
Notes Section to reflect tote above.Additional deta Us above will b a included in the
i ai SPe fft ations issued for construction and will be Included as a condition
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ap rovaf for Lots A.,8,,C, and the proposed subdivision way.
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11. The North Andover Fire Department shall review there o e l fire lines and hydrant
at
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locations/spacing for conformance with their standards and policies,
Comment Response: Noted.
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. it is our understanding din that a new server pump station is to be installed for the
redevelopment, The developer may want to consider installing a card hydrant off the fire
or t'Ic grater mains extension adjacent to the new pump station for maintenance �.
and repair purposes.
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OMMOn 'Response: Free eless yard hydrants have been included at the sanitary
pump station locations on shy CU102 and CU1030
13. Pressure reducing valves P Vs) may be required for a . .
� r individual buildings r
Massachusetts achusetts lumbin code. Should the developer require a flow test and/or pressure
test, the developer shall coordinate and schedule this work with the NAWD.
COmment Response: Noted,
14. The developer shall provide additional Information o the purpose andmaterials
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construction for the proposed "Water Tower"" located on Plan Drawing No. C 7 o .
Corr meat Response: The water tank found on shoot CU105 will be used for fire
suppression purposes only.Consistent with similar roe s of this nature the e tank
rills likely be a*270$000 9 allIon suction tank whIc measures±39.5 feet In diameter
with a height of±32 ft. The tank is attached to a pumphouse containing i
diesel
generator and a Punnp which will supply water to the fire suppression systern in
case of an emergency. The tank will be a wefded metal tank designed in line with
Herrington Gr u P s e if leations.As a condition of a rovaI for Lot o profession al
tank manufacturer will provide detail drawings and specffi ations to be submitted
for the Harrinaton Group and local authorities review and approval.
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. The developer shall provide as-built record drawings f all
0 new and existing water
infrastructure tothe NAWD at the completion of construction.
COmmeOt Response; note has been added to sheet CS002 under the Util
Section to require this,
We trust these responses and the enclosed revised material adeq
uately address your
Comments and concerns. Should you have any additional comments or concerns, please
do net hesitate to contact us directs on 617-824-9100 or nkirschoer@langan.com, or k
toneill0ang r .c r n.
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