HomeMy WebLinkAboutConstruction Plans 7 Lf)
00
L0
i
N
cy)
I
O
O
00
� z
0
� cn
Q w
Q��
N - NOTE: Lu
D D 7
SEE PLANS FOR LOCATIONS OF MONITORING WELLS, THIS DETAIL ONLY SHOWS THEM FOR SEEPAGE BED SHALL CONFORM TO ACHD STANDARD DRAWING BMP 20 L
W z m z REFERENCE AND DISTANCE FROM TRENCH. WELL "A" MAY BE LOCATED ON EITHER END OF J
vDi s cDn e SEEPAGE TRENCH AND SHALL BE LOCATED ON OPPOSITE SIDE OF THE STREET FROM SEEPAGE BED. n
z o z o V
N 50' SEE TRENCH DATA TABLE - THIS SHEET Q
5' FROM END OF TRENCH J �
MONITORING — TO ACT AS MARKER J O
II II II II WELL "A" - - — - - - - - - - — w Q Z =
w ! ,
O W MONITORING N U CD
MONITOR WELL WELL "B" 0
18" OUT T / 1 I I / 1 18" OUT T PER ACHD SD-627 Il
\ I I SEEPAGE I I SEEPAGE — — — — — — m z
\ TRENCH 2 TRENCH 1 °
a
18" PERFORATED PIPE.
OSEE DETAIL 4 THIS SHEET. w
INSTALL SOLID CAP AT END OF 0 O
PLAN VIEW — — — PERFORATED PIPE N
SAND/GREASE TRAP L — — — _ - — — — — — — — — — — w
LID AND/OR SDMH LID MONITORING WELL 0.
TO BE FLUSH WITH TOP OF TRENCH TO BE A MINIMUM PER ACHD SD-627 O Q
HS 25 RATED STRUCTURE HS 25 RATED STRUCTURE FINISH GRADE OF 2.00 FOOT BELOW FINISHED GROUND,
LID TO BE FLUSH WITH LID TO BE FLUSH WITH TOP OF SIDEWALK AND CURB. (TYP)
FINISHED SURFACE FINISHED SURFACE �, w
FG ±2716.10 FG ±2718.00 NATIVE BACKFILL TOP OF TRENCH
MAYN ROCK BE OVER PIPE SLOPE% MIN. N o I W
2712.40'TOP 2714.80'TOP Z
OF CONC. OF CONC.
° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° °
LL-
20" 20"
2712.50' 18" OUT TO 2714.90' 18" OUT TO 3/4"-2" FRACTURED DRAIN ROCK W
12" INV. IN SEEPAGE BED #1 12" INV. IN EEPAGE BED #1
CATCH BASIN #4 2711.75' CATCH BASIN #2 2713.50' I W
18" INV. OUT 18" INV. OUT SECTION DRAINAGE(ISPWC
SECTION
6" MIN. 6" MIN. TYPE 1 (ISPWC SECTION
SEE TRENCH ELEVATION TABLE FOR BOTTOM I 20502" ON TOP AND
. OVERLAP MINIMUM CD
OF 12
OF BED AND BOTTOM OF SAND ELEVATIONS
SIDES.
\ _
m
IF GROUNDWATER IS ENCOUNTERED THE CONTRACTOR SHALL NOTIFY ASTM C-33 FILTER SAND IN
THE ENGINEER AS SOON AS POSSIBLE FOR REDESIGN OF THE SEEPAGE ACCORDANCE WITH ACHD BMP 04
BEDS TO PROVIDE THE 3'-0" MIN. CLEARANCE BETWEEN GROUNDWATER
1000 GAL. SAND/GREASE TRAP 2 1000 GALBMP-01. SAND/GREASE TRAP 1 AND THE BOTTOM OF THE SEEPAGE BED. THE PORTION OF PIPE LYING IN DRAINAGE
SAND MUST BE WRAPPED IN A DRAINAGE
PER BMP-01 - - PER - -
GEOTEXTILE TYPE 1 (ISPWC SECTION 2050).
FOOT PLATE (TYP.) CONSTRUCT OBSERVATION WELL MUST EXTEND A MINIMUM u
12" BELOW SEEPAGE FILTER SAND OF 1' BELOW BOTTOM OF THE SAND IN THE
SEEPAGE BED.
ACHD IS NOW INSTALLING ELECTRONIC MARKERS ON EACH CORNER W
OF THE DRAINAGE FACILITY. CONTRACTORS TO COORDINATE WITH IF ROCK IS ENCOUNTERED, CONTRACTOR TO HAVE PERCOLATION TESTS PERFORMED
ACHD INSPECTION FOR PLACEMENT OF THE MARKERS DURING BY SOILS ENGINEER AFTER SEEPAGE TRENCH IS FULLY EXCAVATED. IF THE 0
CONSTRUCTION AND PRIOR TO BACKFILLING. ACHD IS CURRENTLY PERCOLATION IS LESS THAN SPECIFIED BY THE SOILS REPORT AND ENGINEER,
SUPPLYING THE DEVICES. CONTRACTOR WILL NEED TO BLAST TO CREATE CRACKS IN ROCK FOR DRAINAGE TO
OCCUR OR REDESIGN THE SYSTEM TO ACHIEVE THE REQUIRED CRITERIA. A
PERCOLATION RATE OF 8 INCHES PER HOUR WAS USED FOR DESIGN OF THESE
SEEPAGE TRENCH DETAIL SEEPAGE BED. ONCE BED IS FULLY EXCAVATED, CONTACT ACHD INSPECTION
SERVICES TO VERIFY RECEIVING SOILS PERCOLATION RATES.
SCALE: NTS
SEEPAGE BED SHALL CONFORM TO ACHD STANDARD DRAWING BMP 20 PER THE SOILS REPORT PREPARED BY NATURAL RESOURCE SOLUTIONS, FEBRUARY
17, 2021. GROUND WATER WAS NOT PRESENT IN ANY OF THE TEST PITS AND IS Q
R.O.W. R.O.W. EXPECTED TO BE 25-30' FEET BELOW EXISTING GROUND.
60'-0"
0
33'-0" SEEPAGE TRENCH DATA TABLE
SEEPAGE DIMENSIONS TOP OF ROCK TOP OF SAND BOTTOM OF APPROXIMATE 100 YEAR
TRENCH # WxDxL ELEVATION ELEVATION SAND ELEVATION GROUND\WATER DESIGN VOLUME
13'-6" 16'-6" 16'-6" 13'-6" 1 12'x11'x55' 2715.50 2704.50 2703.00 NSA 3121
0'-6" 5'-0" 1 8'-0" 2' 1 14'-6" 14'-6" 2 8'-0" 5'-0" 0'-6" 2 15'x11'x123' 2713.75 2702.75 2701.25 NSA 8748
3•/ Mq� (( O
SLOP Fl
2.00% SLOPE 2.00% SLOPE
MAX Q
S�OpE S�0 00T VI N i
o cn
CD
4" OF %" MINUS w rn o m
CONCRETE SIDEWALK PER 5 �g � 6, Y
MINIMUM 2 FT CRUSHED GRAVEL ISPWC AND ACHD N I S
U
(n /
LEVEL LANDING SUPPLEMENTAL DRAWINGLu �/?M m m
BEHIND BACK SD-709. I / °O L,
14" OF 6"
OF SIDEWALK 3" ROLLED CURB AND GUTTER I Z o
PER ISPWC AND ACHD MINUS PIT RUN \ I // s Q w cli
o N }
SUPPLEMENTAL DRAWING SD-702. cn J
�" OF ASPHALT PAVEMENT I / Zcn Q z m Y o
�n / • w Y (n c0 O /
EXTEND BASE MATERIAL 6" BEHIND LOCAL RESIDENTIAL ROADWAYS AND ALLEYS SHALL BE SP-3, 0.50 INCH (2 ) _ _ _ _ _ _�_ _ _ _ _ _ 3/4" PERFORATIONS IN VALLEY LLI `' ¢ " �' w
CURB (TYP.) MIX, PG 58-28 TWO AND A HALF INCHES (2.5") THICK OF CORRUGATED PIPE. 5 EACH oo w o
TYPICAL 60' ROW STREET SECTION V M ' � Y
w /
z �
- NTS - < = Q LL
18" PERFORATION SCHEDULE �S\pNAL Fti
- NTS - oST
0
9412 A
06/16/23
sT �o
C re OF SOP P
KIN���
SHEET
C3 . 5