HomeMy WebLinkAboutC4 Grading & Drainage Plan (8.9.23)YARMOUTH,
STORMWATER LEACHING SETBACKS:
1.) AS LAID OUT ON THE PLANS, ALL SUBSURFACE LEACHING FACILITIES AND THE'M1' AND'M2' DRY
WATER QUALITY SWALES SHALL MAINTAIN A MINIMUM 10' SEPARATION FROM ALL SEPTIC TANKS AND A
MINIMUM 25' SEPARATION FROM ALL SEPTIC SOIL ABSORPTION SYSTEMS, PER TITLE 5 REQUIREMENTS
FOR'LEACHING CATCH BASINS & DRYWELLS'.
2.) AS LAID OUT ON THE PLANS, ALL OTHER DRY WATER QUALITY SWALES WITHIN THE RESIDENTIAL LOTS
SHALL MAINTAIN A MINIMUM 5' SEPARATION FROM ALL SEPTIC TANKS AND A MINIMUM 10' SEPARATION
FROM ALL SEPTIC SOIL ABSORPTION SYSTEMS, PER TITLE 5 REQUIREMENTS FOR 'OTHER OPEN, SURFACE
OR SUBSURFACE DRAINS WHICH DO NOT DISCHARGE TO SURFACE WATER SUPPLIES OR INTERCEPT
SEASONAL HIGH GROUNDWATER'.
3.) ALL DRY WATER QUALITY SWALES AND ALL LEACHING FACILITIES SHALL MAINTAIN A MINIMUM 10'
SETBACK DISTANCE FROM BUILDING FOUNDATIONS, PER THE REQUIREMENTS OF THE MASS.
STORMWATER HANDBOOK.
NOT TO SCALE
PLAN BOOK 326 PAGE 22
ROUTE 6A 1895 S.H.L.O PLAN, SHEET 8
DEED BOOK 2776 PAGE 322
ASSESSORS' MAP 125 PARCEL 39
LEGEND
- - 32 EXISTING CONTOUR
32 PROPOSED CONTOUR
O X12.34 EXISTING SPOT GRADE
/ M1 DRY WATER QUALITY SWALE CONNECTED TO 24x5 PROPOSED SPOT GRADE
VEGETATION TO BE CUT BACK WITHIN SIGHT EASEMENT STORMWATER MANAGEMENT SYSTEM. EXCESS FLOW - yy- WATER SERVICE LINE
AREA AS REQUIRED TO ALLOW CLEAR AND CONTINUOUS CONTINUES TO LEACHING FACILITY
/VEHICLE SIGHT DISTANCE FROM THE PROPOSED INTERSECTION. VIA (2) CATCH BASINS IN SWALE. -�- UNDERGROUND ELECTRIC SERVICE
0� � �� / BOTTOM OF SWALE=48.5 TEST HOLE / BORING LOCATION
OUTLET RIM=50.0 ST SEPTIC TANK
- /P OUTFALL PIPE (WITH SPLASH PAD)=50.5 (MIN.)
7 "\0 DB DISTRIBUTION BOX
Top of Mass Highway Bound 28' X 14' STORMWATER LEACHING FACILITY: SAS SOIL ABSORPTION SYSTEM
(2) 6'0 X 6' LEACH PITS, 14' ON CENTER
Mass. Coord. System: Reserve RESERVED FOR FUTURE
N: 2720847.75 WITH STONE AROUND AND UNDERNEATH
/ E: 1006864.30 INLET INVERT=46.8 Cob UTILITY POLE
NAVD88 Datum: BOTTOM OF LEACHING=41.3 ® CATCH BASIN
4z Qa" EL=53.4± WOODEN GUARDRAILS (1) CDS 2015-4 PRE-TREATMENT UNIT 1cp FIRE HYDRANT
RIM/ @ SLOPED AREA INLET
T I
INLET INVERT=50.8 ® DRAINAGE MANHOLE
/ s s Back of Berm -
OUTLET INVERT=50.8 ■ CONCRETE BOUND, FOUND
--- -- --- (1) MANHOLE -x-x- LIMIT OF WORK
.-40 .09 TO HOCKA 0 D (CLTO CL)_ _ _ pave RIM=54.1
_ _ _ _ \ - - _ Dry INLET INVERTS=51.0 FENCE
( - -R0_ f)� - - \ \ _ OUTLET INVERT=50.9--�-o--� GUARDRAILS
(--- / - - - - oT���
% (40' Wide- Sta e Highway) 351.06 _ x EDGE OF CLEARING
- F,<D+-� -52- 430.06' C--7 ROOF RUNOFF DRYWELL
- T
-� - - IGHT E j /� .,/ x5 Q 97"O0' ` ` O OUTWARD REAC Edge pave
_ 7' nt
��� J / /+ w 48x5 Q ```�H(CL o me
50 - CL)�Sa
,� /Veri
ulloff
5 Q RESERVE 10 ° /�OVy /
LOIN% 0 6o r" 5s
T -----------------
1
�/ _ ---�
OT 7-
/ / / �o/ 12,680 SF± o \ I I
i� OPB SPA6E / �� / ���, : Lj
o� ► I
w
TOTAL AREA = 237 826 N± ( / / / ��o� /To s9 m o '
'J \ WETLAND v45SF± I rj i / J -4.~
u
l UPLAND = 237,2$\$F± I 1 CD 25' RIMC53C8H BASINS
C
\ �_-� OUTLET INVERT=51.3
� � `u�j I \\ I \ � I ` 60 _ 52 /
SO 9 2 - s6 T I o
s� I z c x ROOF RUNOFF DRYWELL (TYPICAL)
\ I J I J n K CULTEC RECHARGER 330XLHD
s w ' I I (2) UNITS IN SERIES (10.5' x 6.33')
/ �ET) I r, o w v I TOTAL OF (4) UNITS PER DWELLING
x D
X �
IGH
OINT 125 SF X
STREll
_ TP4
- / ---- h -
/ (D o
I� f SF \'NSO' \�
N\ ^/ 4 v w If WT 2 1, (2) CATCH BASINS W/ CASCADE GRATES
w I RIM=52.2
/ w 161� SF + OUTLET INVERT=49.7
OT%� L 1 / / err u�/ OT 0 56 o (1) MANHOLE
u RIM=52.3
+/* 20,71.E ± SF± /� 0 IJ I INLET INVERTS=49.5
A m o 15,459 S+ I \ OUTLET INVERT=49.4
(1) CATCH BASIN
G / V o RIM=54.0
� � LrI �p`NEgO 1 SLOPE EASM� --� � / OUTLET INVERT=51.5
OF �\ \ '�' /25'
� 50
i / f -
1+00 +_ - O O
- - w
(1) MANHOLE '6 �,�\\Nk / �1 o �'o ---- U, - Q 11 /
RIM=39.9 \�O� A3R2 y k50 i A __ "o ,L o
INLET INVERT=37 2 i �s ��pFEL _ 1� u l m o 14, 0 F± I, / S4 DRY WATER
OUTLET INVERT=37� 25' f �7 i 6� I
j QUALITY SWALE
S3 DRY WATER
QUALITY SWALE D
(1) MANHOLE 32
RIM=38.6 0 \ \ L4W / O ¢. SL P EASEMENT
Oo I 15
INLET INVERTS=35.5 �- PINT / / l Ln /
OUTLET INVERT=35.4 3a P "�
(1) CDS 2015-4 PRE-TREATMENT UNI \ ^ + p❑ o I I so x % / aR
RIM=38.4 6 1 hI TP12
J
INLET INVERT=35.3 F TURE SEWER
OUTLET INVERT=35. I
I EASEMENT
(2) CATCH BAST S O 3+82 c / I I I \� 0 1
RIM= \
OUTLET INVERT=35.
Q2 \ \ �♦ I �0 / 33 / / l ) / /((� \ I I I
M2 DRY WATER QUALITY SWALE CONNECTED TO 6
STORMWATER MANAGEMENT SYSTEM OAF \ of -� 5 /
EXCESS FLOW CONTINUES TO LEACHING FACILITY \ o \ ` F9� /Et�l I / / / / / 1 14 \ \ I I I I
I S
VIA (2) CATCH BASINS IN SWALE.\
BOTTOM OF SWALE=33.0 \ �F� 40 O / / /TP5
CATCH BASIN OUTLET �Y=34..k \ \ Q
OUTFALL PIPE (WITH SPLASH PAD)=35 WIN.) \ Q /�f� / / / / rr / 62 I I o I / S5 DRY WATER
Q //\ / / / / / / / / / �/ / fix, . \ / / QUALITY SWALE
WOODEN GUAR LS
@ SLOPE E \ \ \\ \ '7O��y
\ /
70' X 28' STORMWATER LEACHING FA Y: \ \ \ t - - SF
(10) 6'0 X 6' LEACH PITS, 14' ON�ITER� �\ \ \ \ `-,24`1�J ±
WITH STONE AROUND AND UNDER E Tii- \ \ \ \ \ + 46� S�>�5 �� / "
/
INLET INVERT=31.5 \ \ \ \\ \ `- / fur / � / 58
BOTTOM OF LEACHING=26.0 \ \ \ \ \ \ �� x x x /3Q
q yes LIMI F�x
ROOF RUNOFF DRYWELL (TYPICAL) \ \ z��x f 0 411 DWELLING
CULTEC RECHARGER330XLHD /� \ \ \ \\ \ I�� / '� \ I 11 FOFEL=650
(2) UNITS IN SERIES (10.5' x 6.33') / 1 \ - / � 1 4RQ DWELLING
TOTAL OF (4) UNITS PER DWELLING / I \ - - � I FE
TO
LOT I i l / -65.0+ E I LE E ET
N STREET
_
LO_ / / / I (40' Town Way)
-68
If
x_x72
TO 60
N WN pF Y Rp,10
UTHWATER EASEs4` s2 So
MENT -
r
z
o0
CS
ID m
l 1
Q2
Back of Berm
f Pavement
Edge o
Back of B� -
40
r\
3$ \
S1 DRY WATER
QUALITY SWALE
S2 DRY WATER
QUALITY SWALE
(2) CATCH BASINS W/ CASCADE GRATES
RI M=43.6
OUTLET INVERT=41.1
(1) MANHOLE
RIM=43.8
INLET INVERTS=40.9
OUTLET INVERT=40.8
� ELECTRICAL E
ZASEMENT
so' WIDE 1?o
• ��IN
10
-
1
_ loe
r e ated Wetland
Edge of Ve6 Wetlands Layer `
,dam (Per Mass GIS DEP
♦
Ali,
�#2936C
200.21'
0 50 100 150
SCALE 1" = 50'
G:\AAJobs\THE DAVENPORT COMPANY -ROUTE 6A-YARMOUTHPORT\DWG\Definitive Site PIans.dwg
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N
IW
Top of Concrete Bound
Mass. Coord. System:
N: 2720127.39
E: 1007783.51
NAVD88 Datum:
EL=29.1±
___4VC B,
FND C4
THE DAVENPORT COMPANIES
20 NORTH MAIN STREET, YARMOUTH, MA
GRADING & DRAINAGE PLAN
LOT 2- ROUTE 6A- YARMOUTH-PORT, MA
o� �� J.M. OTEILLY & ASSOCIATES, INC.
�OQ�� Professional Engineering & Land Surveying Services
1573 Main Street - Route 6A
P.O. Box 1773
(508)896-6601 Office Brewster, MA 02631 (508)896-6602 Fax
DATE: SCALE: BY: CHECK: JOB NUMBER:
8/9/2023 As Noted RFR JMO JMO-8807