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SEE PLANS FOR LOCATIONS OF MONITORING WELLS, THIS DETAIL ONLY SHOWS THEM FOR SEEPAGE BED SHALL CONFORM TO ACHD STANDARD DRAWING BMP 20
18" ADS N-12 12" SDR-35 IN s REFERENCE AND DISTANCE FROM TRENCH. WELL "A" MAY BE LOCATED ON EITHER END OF
SOLID WALL OUT TO FROM CB#2 SEEPAGE TRENCH AND SHALL BE LOCATED ON OPPOSITE SIDE OF THE STREET FROM SEEPAGE BED. Q
SEEPAGE BED #1 O
I yo 50' SEE TRENCH DATA TABLE - THIS SHEET C)
5' FROM END OF TRENCH 2:SO ADS N-12 TO ACT AS MARKER O
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SOLID WALL OUT TO MONITORING —
SEEPAGE BED #1 WELL "A" Cn
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Q>'I ACOHD MONITOR WELL
W627 WELL "B" Z
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18" PERFORATED PIPE.
EXTEND NON-PERFORATED PIPE =
12" SDR-35 IN SEE DETAIL 4 THIS SHEET. z J
MIN. OF 5' INTO SEEPAGE BED LLJ
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FROM CB#2 INSTALL SOLID CAP AT END OF F__ OUi
SAND/GREASE TRAP 18" SOLID ADS N-12 PLAN VIEW PERFORATED PIPE LLJ
LID AND/OR SDMH LID U O Q
TO BE FLUSH WITH TOP OF TRENCH TO BE A MINIMUM MONITORING WELL
HS 25 RATED STRUCTURE HS 25 RATED STRUCTURE 0
LID TO BE FLUSH WITH LID TO BE FLUSH WITH FINISH GRADE OF 2.00 FOOT BELOW FINISHED GROUND, PER ACHD SD-627 (�
FINISHED SURFACE FINISHED SURFACE TOP OF SIDEWALK AND CURB. (TYP) ENSURE WOVEN GEOTEXTILE
LOW PROFILE RING LOW PROFILE RING - - 7
FG t2715.75' AND COVER TYP. FG t2715.25' AND COVER TYP. zLi FABRIC TRENCH. NON EWOVEN R TOP OF
BE —
NATIVE BACKFILL TOP OF TRENCH � �
'` SIDES OF TRENCH
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• : • : • : SLOPE% MIN. N o
MO BE OVER PIPE
ROCK
— — — !-,: •• :•;..r — — — USE CONCRETE COLLARS — — — Y :•;..• — — — USE CONCRETE COLLARS Q
•• •^ Y O O O O O O O O O O O O O O O O O
_ _ _ K '~' '••� _ _ _ AS NEEDED TO BRING — — — '_••�• •y — — — AS NEEDED TO BRING I —0 e a 0— a a 0—
RIMS TO FG ELEVATION RIMS TO FG ELEVATION CD
18" PERFORATED PIPE. I n/ W
EXTEND NON-PERFORATED PIPE SEE DETAIL 4 THIS SHEET. o L.L
TOP 2712.40' TOP 2714.40' MIN. OF 5' INTO SEEPAGE BED O Q
OF CONC. o OF CONC. I 3/4"-2" FRACTURED DRAIN ROCK
20" 20" 18" SOLID ADS N-12 DRAINAGE GEOTEXTILE
12" IN FROM CB #2 12" IN FROM CB #4 SECTION TYPE 1 NON-WOVEN w Q
INVERT = 2712.50' INVERT = 2714.50' I I (ISPWC SECTION 2050).
18" OUT TO 18" OUT TO SEE TRENCH ELEVATION TABLE FOR BOTTOM ON SIDES OF TRENCH LJ—I
6 j SEEPAGE BED #1 MIN._� SEEPAGE BED #1 OF BED AND BOTTOM OF SAND ELEVATIONS OVERLAP MINIMUM OF 12" Z
" MIN._ 6"
INVERT = 2711.50' INVERT = 2713.50'
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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
•t BEDS TO PROVIDE THE S-0" MIN. CLEARANCE BETWEEN GROUNDWATER I
•7777' AND THE BOTTOM OF THE SEEPAGE BED. THE PORTION OF PIPE LYING IN DRAINAGE W
SAND MUST BE WRAPPED IN A DRAINAGE
FOOT PLATE (TYP.) CONSTRUCT GEOTEXTILE TYPE 1 (ISPWC SECTION 2050).
1-1000 GAL. SAND & GREASE TRAP #1 1-1000 GAL. SAND & GREASE TRAP #2 12" BELOW SEEPAGE FILTER SAND OBSERVATION WELL MUST EXTEND A MINIMUM C
OF 1' BELOW BOTTOM OF THE SAND IN THE
- NTS - PER BMP-01 - NTS - PER BMP-01 SEEPAGE BED.
ACHD IS NOW INSTALLING ELECTRONIC MARKERS ON EACH CORNER
OF THE DRAINAGE FACILITY. CONTRACTORS TO COORDINATE WITH
ACHD INSPECTION FOR PLACEMENT OF THE MARKERS DURING IF ROCK IS ENCOUNTERED, CONTRACTOR TO HAVE PERCOLATION TESTS PERFORMED
CONSTRUCTION AND PRIOR TO BACKFILLING. ACHD IS CURRENTLY BY SOILS ENGINEER AFTER SEEPAGE TRENCH IS FULLY EXCAVATED. IF THE
SUPPLYING THE DEVICES. PERCOLATION IS LESS THAN SPECIFIED BY THE SOILS REPORT AND ENGINEER,
CONTRACTOR WILL NEED TO BLAST TO CREATE CRACKS IN ROCK FOR DRAINAGE TO
OCCUR OR REDESIGN THE SYSTEM TO ACHIEVE THE REQUIRED CRITERIA. A
N5 �4s PERCOLATION RATE OF 8 INCHES PER HOUR WAS USED FOR DESIGN OF THESE
1-1 SEEPAGE BED. ONCE BED IS FULLY EXCAVATED, CONTACT ACHD INSPECTION
SEEPAGE TRENCH DATA TABLE SERVICES TO VERIFY RECEIVING SOILS PERCOLATION RATES.
\ I / APPROXIMATE
SEEPAGE DIMENSIONS TOP OF ROCK TOP OF SAND BOTTOM OF 100 YEAR
GROUND WATER
\ I / TRENCH # WxDxL ELEVATION ELEVATION SAND ELEVATION DESIGN VOLUME
ELEV
PER THE SOILS REPORT PREPARED BY NATURAL RESOURCE SOLUTIONS, FEBRUARY 1 O W
15'xl1'x116' 2713.50 2702.50 2701.00 N/A 8250 17, 2021. GROUND WATER WAS NOT PRESENT IN ANY OF THE TEST PITS AND IS
3/4" PERFORATIONS IN VALLEY 2 15x1 1 x62' 2715.50 2704.50 2703.00 N/A 4396 EXPECTED TO BE 25-30' FEET BELOW EXISTING GROUND. (j'�
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OF CORRUGATED PIPE. 5 EACH U W
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SEEPAGE TRENCH DETAIL
18" PERFORATION SCHEDULE SCALE: NTS
- NTS - SEEPAGE BED SHALL CONFORM TO ACHD STANDARD DRAWING BMP 20 (f�
0000/
P/L P/L
TBC R.O.W. R.O.W. Ln
20'-0" 5.00' 60'-0" w
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12" RIBBON CURB 33'-0" NCD
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FG ON LOTS 3:SLOPE 2.00% MAX 13'-6" 16'-6" 16'-6" 13'-6" N rn f
W Im
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LANDSCAPE 0'-6" 5'-0" 8'-0" 2' 14'-6" 14'-6" 2' 8'-0" 5'-0" 0'-6" ui o
3" ROLLED CURB & GUTTER 3'1 F\LL t=^ w
PER CITY OF CALDWELL C-701 S�pq EFl<< I 3.1 S v J o CN `��'
f- 2.00% SLOPE 2.00% SLOPE --► z � � w o � CD
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71—mr,
_ woo ALLEYS ASPHALT SECTION SHALL BE 5:1I _ I— III-1 I I— = � ppoTWO AND A HALF INCHES (2.5") THICK ' —�i�— F o 11 =III 11111111=„111- -111 111 . 111 -I I I, ,1 11 11 1,;l "' m
m
4" OF 3/a" MINUS m c i
MINIMUM 1 FT CRUSHED GRAVEL CONCRETE SIDEWALK PER z Y
ISPWC AND ACHD 3: u w
PLACE 10" MIN. OF 3 4" ROAD MIX.
LEVEL LANDING SUPPLEMENTAL DRAWING < = Q
COMPACTED TO 95% DENSITY. BEHIND BACK
14" OF 6" SD-709. o v o LL o
OF SIDEWALK 3" ROLLED CURB AND GUTTER MINUS PIT RUN
PER ISPWC AND ACHD
SUPPLEMENTAL DRAWING SD-702. 1p NA
NATIVE MATERIAL COMPACTED 2Y" OF ASPHALT PAVEMENT 5S sr F�
TO 95% DENSITY. EXTEND BASE MATERIAL 6" BEHIND LOCAL RESIDENTIAL ROADWAYS AND ALLEYS SHALL BE SP-3, 0.50 INCH ( ") o C�
CURB (TYP.) MIX, PG 58-28 TWO AND A HALF INCHES (2.5") THICK
9412
25FT COMMON DRIVEWAY LOT SECTION TYPICAL 60' ROW STREET SECTION 11/07/23
- NTS - SECTION VIEW
- NTS - C's,S,T�re of ioP��P
SHEET
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