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J-U-B ENGINEERS, INC.
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CONCRETE CURB AND GUTTER
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PER ACHD SUPPLEMENT TO
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ISPWC SD-701 TYP.
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PERFORATIONS IN VALLEYS
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SUPPLEMENT
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95% COMPACTED SUBGRADE
6" OF 3/4" CRUSHED GRAVEL
PERFORATION SCHEDULE
PER ASTM D698 18" OF 6" MINUS PIT RUNO_L8"
TYPICAL PRIVATE ROADWAY SECTION
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SEEPAGE BED NOTES:
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1. REFER TO ACHD BMP-20 FOR SEEPAGE BED DETAILS AND SPECIFICATIONS.
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7/14/2022
2. ACHD REQUIRES ELECTRONIC MARKERS AT ALL CORNERS OF UNDERGROUND INFILTRATION
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SYSTEMSrl:. CONTRACTOR TO COORDINATE WITH ACHD INSPECTION FOR PLACEMENT OF MARKERS
DURING CONSTRUCTION AND PRIOR TO BACKFILLING. MARKERS ARE SUPPLIED BY ACHD AT A
COST OF $20.00 PER MARKER. FEE SHALL BE PAID PRIOR TO RECORDING FINAL PLAT.
4. CONTRACTOR SHALL PERFORM PERCOLATION TESTING AT PROPOSED UNDERGROUND INFILTRATION
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INSTALL SOLID CAP AT END
PRIOR TO TESTING.
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SEE PLANS FOR EXACT LOCATIONS N
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5.
CONTRACTOR SHALL NOTIFY THE ENGINEER IMMEDIATELY IF GROUNDWATER IS ENCOUNTERED WITHIN
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SHOWS THEM FOR REFERENCE. 12" MIN. 3 FEET OF THE BOTTOM DESIGN ELEVATION FOR ANY UNDERGROUND INFILTRATION SYSTEM
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WELL 'A' MAY BE LOCATED ON
FACILITY AND/OR IF IT IS HIGHER THAN ANTICIPATED.
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EITHER END OF SEEPAGE BED.
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SAND AND GRESE TRAP
PER ISPWC SD-624.
6.
MAXIMUM DESIGN INFILTRATION RATE OF 1 IN/HR PER THE GEOTECHNICAL EVALUATION DATED 3
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MAY BE REPLACED WITH
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NOVEMBER 2021 PREPARED BY GEOTEK, INC.
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CATCH MANHOLE (ISPWC
SD-611) IF 100-YR
WRAP TOP AND SIDES OF 3 18" PERFORATED PVC
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FOR UNDERGROUND INFILTRATION SYSTEMS IN THE ACHD RIGHT-OF-WAY, NO TREES MAY BE
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FLOW RATE IS LESS
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PLANTED WITHIN 10' OF THE SYSTEM
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SIMILAR PER ACHD
BMP-20 HALF OF PIPE)
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FOR UNDERGROUND INFILTRATION SYSTEMS IN A COMMON LOT, NO TREES MAY BE PLANTED
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ABOVE THE SYSTEM OR WITHIN 10'.
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NATIVE BACKFILL%�/./���%
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EXTERNAL OBSERVATION WELL SHALL BE LOCATED EITHER ON THE OPPOSITE SIDE OF THE STREET
OR AT LEAST 50' FROM THE UNDERGROUND INFILTRATION SYSTEM. WELL SHALL EXTEND TO AN
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SOLID WALL PVC PIPE
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ELEVATION 3' BELOW THE BOTTOM ELEVATION OF THE UNDERGROUND INFILTRATION SYSTEM.
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12.
WOVEN FILTER FABRIC SHALL BE GEOTEX 401 OR OTHER MEETING STANDARDS IN ACHD SECTION
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COVER REQUIREMENTS FOR SEEPAGE BEDS WITHIN PARKING LOTS:
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13.
A MINIMUM 1.0-FT COVER FROM TOP OF BED TO PAVEMENT SUBGRADE IS REQUIRED
5' MIN.
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--BACKFILL OVER BED TO SUBGRADE WITH 6"-8" MINUS PIT RUN
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--WOVEN GEOTEXTILE FABRIC REQUIRED OVER TOP OF BED
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--TOP OF BED UNDER SIDEWALK SHALL BE MIN 1.0-FT BELOW PAVEMENT SUBGRADE
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MAXIMUM
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GROUNDWATER
TYP.
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IF < 1.0-FT COVER FROM TOP OF BED TO SUBGRADE, ANGULAR" TO 2" ROCK IS REQUIRED
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ELEVATION
(15 -20)
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WITH MINIMUM 50% SINGLE FRACTURED FACE IN PLACE OF 2" DRAIN ROCK.
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BELOW EXISTING
FILTER SAND IN ACCORDANCE
WITH ISPWC SECTION 801 OR
GRADE
15.
FULL ROADWAY SECTION IS REQUIRED OVER SEEPAGE BEDS. SEEPAGE BEDS SHALL NOT EXTEND
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ASTM C-33, WHICHEVER IS
ABOVE SUBGRADE.
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MORE STRINGENT
EXTERNAL OBSERVATION WELL
16.
THE DESIGN PROFESSIONAL IS SOLELY RESPONSIBLE FOR ASSESSING THE BEARING RESISTANCE
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PER ACHD SUPPLEMENT TO
OF THE SUBGRADE SOILS AND DETERMINING THE DEPTH OF FOUNDATION STONE.
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ISPWC SD-627. SEE NOTE 10
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SEEPAGE BED SECTIONLu
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SCALE: N.T.S.
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FILE : 10-20-143_C-500
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JUB PROJ. # : 10-20-143
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BY: JGC
DESIGN BY: DSM
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CHECKED BY: DSM
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ONE E INCH
AT FULL SIZE, IF NOT ONE
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INCH SCALE ACCORDINGLY
LAST UPDATED: 7/15/2022
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SHEET NUMBER:
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C-500
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