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.
/ PO VEGETATION TO BE CUT BACK WITHIN SIGHT EASEMENT
AREA AS REQUIRED TO ALLOW CLEAR AND CONTINUOUS
<�
VEHICLE SIGHT DISTANCE FROM THE PROPOSED INTERSE
/O \I\ Existing Catch Basin and Leaching Facility within S.H.L.O. _
TO BE REMOVED AND REPLACED AS SHOWN WITH
P\-I 4\P (1) 4' DIAM. SOLID CATCH BASIN WITH
/ 7"\0 CASCADE GRATES, 12" DIAM. HDPE PIPE CONNECTION TO
(1) 6'X6' LEACH PIT (1000 GALLON)
` Top of Mass Highway Bound WITH 1' OF STONE AROUND AND 6" UNDERNEATH.
Mass. Coord. System: INSTALL PAVED BERM SURROUNDING CATCH BASIN.
N: 2720847.75
E: 1006864.30
4 Qa NAVD88 Datum:
/ E L=53.4±
� s s Back of Berm
.-40 .09 ToHOCKA 0- D(CL 0CL)--\__-----___ -
�__ _Rpm _6A_----� --- --
Back erm Q2 (- - - - ® / - X- -
% (40' Wide- Sta e HighW�Y) 351.06 -
F.I - 52-
Ed e of Pavement - - IGHT E�EE 54x5 _
BackofB� --------- -' - - -- _ / wl 48x5 + s
co 4 5) Q RESERVE 10
56
rn - . /
OT 7
z / + +�
X 12,680 SF_ o
� �1 / Lo
W Lo I I I c
i� OPB SPA6E / ��}� / Q�'' i o
O
TOTAL AREA �237,826 S`F±� �T° 999 LU
m o
'J \ l WETLAND = v�45 SF± I rj /I / J u I
n --
� M UPLAND = 237,28�SF± I 1 _ / I
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
X12.34
EXISTING SPOT GRADE
M1 DRY WATER QUALITY SWALE CONNECTED TO
24x5
PROPOSED SPOT GRADE
STORMWATER MANAGEMENT SYSTEM. EXCESS FLOW
- yy-
WATER SERVICE LINE
CONTINUES TO LEACHING FACILITY
VIA (2) CATCH BASINS IN SWALE.
-E-
UNDERGROUND ELECTRIC SERVICE
BOTTOM OF SWALE=48.5
IP
TEST HOLE / BORING LOCATION
OUTLET RIM=50.0
ST
SEPTIC TANK
OUTFALL PIPE (WITH SPLASH PAD)=50.5 (MIN.)
DB
DISTRIBUTION BOX
28' X 14' STORMWATER LEACHING FACILITY:
SAS
SOIL ABSORPTION SYSTEM
(2) 6'0 X 6' LEACH PITS, 14' ON CENTER
Reserve
RESERVED FOR FUTURE
WITH STONE AROUND AND UNDERNEATH
INLET INVERT=46.8
Cob
UTILITY POLE
BOTTOM OF LEACHING=41.3
®
CATCH BASIN
WOODEN GUARDRAILS (1) CDS 2015-4 PRE-TREATMENT UNIT
lcr
FIRE HYDRANT
@ SLOPED AREA RIM=54.0
INLET INVERT=50.8
0
DRAINAGE MANHOLE
OUTLET INVERT=50.8
■
CONCRETE BOUND, FOUND
(1) MANHOLE
-x-x-
LIMIT OF WORK
pale RIM=54.1
FENCE
INLET INVERTS=51.0
OUTLET INVERT=50.9
GUARDRAILS
EDGE OF CLEARING
TOOU
` ` TW4RD
E==7
ROOF RUNOFF DRYWELL
97.00' REACH
` ` (CL TO cavemen-
L%�, Sa
aved
/
IJ Pulloff
% 60 a
/ OIN
O ri ss
- -
+
-
I
I
01
(2) CATCH BASINS
o x 25' RIM=53.8 -
v \ I _- OUTLET INVERT-51.3
\ �LOLn I '
QUALITY SWALE �} \ - � I S1 DRY WATER � 60 � _ _ 62
S0k0 9 2 s6 T
z c I ROOF RUNOFF DRYWELL (TYPICAL) 01
\ 1 I J I J n K CULTEC RECHARGER 330XLHD
w ' I I (2) UNITS IN SERIES (10.5' x 6.33')
ETJ I n o w u I TOTAL OF (4) UNITS PER DWELLING
I x� v
S2 DRY WATER / I+� �" �� ��� 1 1 CD u� Vm �
M
QUALITY SWALE �// + h�
x D
X �
? I IGH
c /
�� / i t,\J\\ S4� �� OT
�' i ` > OINT 11 �F25 SF X
S
ti� 250A��T�TREE!i_ --- - _ - Q TP4
----
- / - - - - P.
h -
-- -
57
VNSO' \^/ v w o LOT 2 x (2) CATCH BASINS W/ CASCADE GRATES
(2) CATCH BASINS W/ CASCADE GRATES / \ (0 / // RIM=52.2
RIM=43.6 f / �d m 0 16,1� SF+
w OUTLET INVERT=49.7
OUTLET INVERT=41.1 OT L / ? o� 56 d i- n
ui rn I I
(1) MANHOLE
1 MANHOLE \ / I OT 0 u RIM=52.3
() /* 20,71.- ± SF± /� 0 4, 1 INLET INVERTS=49.5
RIM=43.8 \ z � 15 459 S +
m O , \ OUTLET INVERT=49.4
INLET INVERTS=40.9 3 ^\ x \ Y d ti 1
OUTLET INVERT=40.8 1 x I I' / Y 60
°°CD/ (1) CATCH BASIN
/ V o RIM=54.0
o LrI N�gO \ SLOPE EA�M� "� I 58 _-_ x / OUTLET INVERT=51.5
/g L�j 0 /25'
i / f0 501+00 -
0Uj
(1) MANHOLE
RIM=39.9 __ o
INLET NVERT=37 z i �s pFEL _ 1� u l m o 14, 0 F± S4 DRY WATER
I
OUTLET NVERT=3725'
QUALITY SWALE
S3 DRY WATER
QUALITY SWALE
(1) MANHOLE 32 \ \ / +
�6
RIM=38.6 "o \ \ L4W / O SL P EASEMENT o � � 15
INLET INVERTS=35.5 �- POINT
OUTLET INVERT=35.4 3a P �'p \ 1 60 SF± ti, �Py /�+ I +
(1) CDS 2015-4 PRE-TREATMENT UNI \ ^ + p❑ o I I so x % / aR
RIM=38.4 6 1 TP12
h \\ g N AI�
J
INLET INVERT=35.3 F TURE SEWER I I
OUTLET INVERT=35. I I I I I
I EASEMENT / I I I + I +� S � I
(2) CATCH BAST S\ O � 00 3+82 c / I I I \ 0 1 8 I I I 1 I \ t R2
RIM= m - \ 1 \
OUTLET INVERT=35. I I` l a\ \
M2 DRY WATER QUALITY SWALE CONNECTED TO
STORMWATER MANAGEMENT SYSTEM\ \ -, °AF NJE /
EXCESS FLOW CONTINUES TO LEACHING FACILITY
I S
VIA (2) CATCH BASINS IN SWALE.\ 14
BOTTOM OF SWALE=33.0 \ �F� 40 O / / / / / / / / / I /� I I I J, I 5-b" I I I I
CATCH BASIN OUTLET �Y=34.k00
OUTFALL PIPE (WITH SPLASH PI)WIN.) \ Q 62 S5 DRY WATER
�
/ \ QUALITY SWALE
WOODEN GUAR LS
@ SLOPE E
S4 \ \\ L / - , J/// �� / / / o
70' X 28' STORMWATER LEACHING FA Y,24w
: \ \ \ t - - SF
(10) 60 X 6' LEACH PITS, 14' ON�ITER\-J ± C�IINk \ / / / /Q / ,
WITH STONE AROUND AND UNDER E 74-
INLET INVERT=31.5 \ \ \ \\ \ `- / fur / /'
/3/ 58
BOTTOM OF LEACHING=26.0 \ \ \ \ \ \ �� x x x Q / ( ` 6
qyes LIMI OR �x
ROOF RUNOFF DRYWELL (TYPICAL) \ \ z��X�W0 48R DWELLIN l l C
CULTEC RECHARGER 330XLHD /� \ \ \ \\ \ / '� \ I 11 FOF EL-65 0+ � Ij 0 \ ��f /
(2) UNITS IN SERIES (10.5' x 6.33') / 1 \ / � 1 °� o l 48R DWELLING
l \ I �--
\ \ \ \ TOTAL OF (4) UNITS PER DWELLING / I \ - - � I + OF r\ � /
LOT
LE E STRE -65.�+
+ ET
l 1 k N
E I
L0_ / I (40' Town Way)
68
7 ) I I
x_x72
N TOWN pF yARM ATER E s4` s2 So
- ASEMENT -
� ELECTRICAL E
ZASEMENT
so' WIDE 1?o
• ��IN
10
-
1
_ loe
r e ated Wetland
Edge of Veg Wetlands Layer `
,dam (Per Mass GIS DEP
♦
All,
�#2936C
200.21'
0 50 100 150
SCALE 1" = 50'
G:\AAJobs\THE DAVENPORT COMPANY -ROUTE 6A-YARMOUTHPORT\DWG\Definitive Site Plans.dwg
w
00
�o
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