227South Street EandS with zoning stormwater.pdfBLACK SHEEP DEVELOPMENT LLC
BOOK 12553 PAGE 263
PLAN BOOK 224 PAGE 80
Sequesnce of construction for E&S-
t Install it E&S BMP's prior to construction
2. Use East dri,e as construction entrance for all heavy traffic loads to
protect West side pavement entrance and parking. West side pavement to
3emain for last 50' n est entrance to a modate tire cleoning.
Strip pavement to be r ved except M2 above.
4. Demo portions of existing building and r all mnteriats from site In
waste containers or trucks. Ali waste building materials to be disposed of
In approved land fill.
5. Excaavnte for n w buildings and trenches for utilities a eeded. Close
utility trenches each day by end of day. Seed and mulch at time of
completion of each trench.
f. Install concrete and backfitl as needed.
7. If mnteriats n stockpiled, see detail for stockpile protection. Do not
stockpile any mnteriats within 20' of the top of the slope to the east and
north to prevent disturbance of the slope as uch as possible,
8. Each day, sweep the pavement of the construction entrance paving at
the end of the day, o when heavy build up of ..It or debris o r If
soil is being tracked into South Street. Any material tracked —er
o beyond the sidewalk sh¢tt be swept or otherwise cleaned immedlatelyfrom
the sidewalk and South Street.
9. Daily after each rain a ent a check should be made of the staked bales
and wattles. Silt acmutation shall not build up o r 4' In any a
10. Daily after each rain a ent ¢ check should be v made of the Storm Drain
Sediment filters. Sediment should be emptied If present. Sediment may be
spread Inside construction site.
11. After all heavy traffic from construction material delivery is complete,
the construction entrance on the West may be remo,ed, and topsoil loam
spread and seeded and mulched to begin grass c er. Once seeded, grass
seed should be watered daily if n rain present until grass is established.
12. Once r ved, the construction entrance side of the property should
not b�
e used for vehicle traffic except In emergency.
13. After construction Is complete, and gross has been established, the
bates and wattles may be dispersed on the property In the upper flat
areas as mulch.
General note.- contractors It is the ontractors responsibility to notify Dig Safe 3 days prior to
vation for final utility ground marking. Call 811 or
1-888-344-7233
2. Property owner, and responsible person for E&S Implementation,
Stormwater protection m and maintenance of both is Danielle
Mckahn of Black Sheep Development, LLC, 32 Perkins Ave, Northampton, MA
LOT 23,
CITY OF
NORTHAMPTON
BOOK 10662 PAGE
PLAN BOOK 224 PAL
mR a.c. w �'Opu�ce
STRAW OR MULCH WATTLE mEmm
PLACED AS SHOWN ON PLAN
Catch Basin With
Sediment Filter
5
LEGEND
4, UNMONUMENTED POINT
O IRON PIPE FOUND
PG 0 STONE BOUND FOUND
Q
`V� ® CAPPED IRON PIN SET
This plan's boundary Survey done by Holmberg and Howe, Inc, Land Surveyors
9� JOB NO: 2018-041
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pF FEET 0 20 40 60 E&S/Stormwater Plan
� —PREPARED FOR — —
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LOT
SOUTH STREET
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LOT 23,060 SE±
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See Boundary Survey for /
Abutter Details
Ezisti.g�
Lot Area 23060 SF
17003.3 SF totalwithin paved bound
Less Roof Are. 2875.4
Less existing pervious within, (plant
beds)
161.7
172.0
188.4
943s
359.1
23.3
Net Paved a n = 12279.9 SF
Roofed Arear= 2875.4 SF
23060 total - 12279.9 - 2875.4 = 7904.7
pervious
5651 SF Woodt.nd
2253.7 SF Lawn and planting beds
HEC-22 Rational Method Calculation results
See report binder for details
10yr Storm, Tc = 15 min
Area SF
C PSG SfxC
Roof 2875.4
0.9 NA 2587.86
Pavement 12279.9
0.9 NA 11051.91
Lawn (A hydrologic Group) 2253.7
C1 A 225.37
Woodland (Primarily Steep) 5651
0.25 R 1412,75
Totals 23060
15277.89
Weighted C 0.66
Ca = 1
I 10 = 4.1 In/hr
Q= 1.44 CF/S
R=
0
v,
SOUTH STREET
Proposed'
Lot Area 23060 SF
17003.3 SF total
Proposed Roof Area Total
4663.6
Proposed shed/Pergola Roof
Area 81.0
Asphalt Paved area = 5989.4
Less Internal pervious = 83.3
Total asphalt paved = 5906.1
Proposed c Patios= 616.3
c
Paved Asphalt / cone. = 6522R
SF
Roofed = 4744 SF
Total Pervious = 11793.6
Woodland -48933 SF
en aw Ln/Planting r s 6900.6 SF
HEC-22 Rational Method Calculation results
See report binder for det.its.
10yr Storrs, Tc = 15 min
Combined C for Rational Method
Are. SF
C HSG Sf.0
Roof 2875.4
0.9 NA 2587.86
Pavement 12279.9
0,9 NA 11051.91
Lawn (A hydrologic Group) 2253.7
0.1 A 225.37
Woodland (Primarily Steep) 5651
0.25 E 1412.75
Totals 23060
15277.89
Weighted C 0.66
Ca = i
I 10 - 4 In/hr
Q= 1.40 CF/S
General .otea
1. It is the .tractors responsibility to notify Dig Safe 3 days prior to
vation for final utty ground narking. Call 811 or
1-888-344-7233
POST CONS T S Property owner, ion responsible person for E&S Implementation,
Stormwaof protection measures, , maintenance of both Is Danielle
Mckahn of Black Sheep Development, LLC, 32 Perkins Ave,t
Northampton, MA
3. All gutter downspouts to empty 4' from the building o.o n splash black
which distributes water ton grassed wherever possible. Gutters which
discharge toward a sidewalk should havee drain pipes) run under the walk
way as to prevent overtopping ency the walk surface.
4. Snow storage and emergency parking I. the east side of the building
shall be limited to times when the ground Is frozen.
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This plan's boundary Survey done by Holmberg and Howe, Inc, Land Surveyors
JOB NO: 2018-041