HomeMy WebLinkAboutGroundwater Observation Well LEGEND
Gi WELL COVER, 8" DIA. WATERTIGHT GALVANIZED STEEL BOLT DOWN COVER AND CANISTER
0 2 OR 3 BOLT LID WITH 9/16" HEAD AND SAE THREADS, GASKETED
0 CONCRETE (COLLAR), CLASS 3000 (ISPWC SECTION 703)
0 3/8" DIA HOLES OR SLOTS CUT INTO PIPE AT 3" ON CENTER
O TRACER WIRE SHALL BE PLACED ON OUTSIDE OF PVC PIPE, MINIMUM 18 GAUGE, INSULATED, SINGLE-
CONDUCTOR COPPER WIRE, INSULATION COLOR SHALL BE GREEN WITH THREE 6" DIAMETER COILS
PIPE SHALL BE PERFORATED PVC, ASTM D-3035, SDR 35. WELLS BACKFILLED IN A PIT REQUIRE 6"
PIPE. DRILLED WELLS MAY USE 4" PIPE
0' NONWOVEN FILTER FABRIC AROUND OPENINGS AND BOTTOM, FABRIC OVER CHIPS/DRAIN ROCK
POLYPROPYLENE FIBER REINFORCEMENT AT 1 1/2 LBS/CY
O BACKFILL MATERIAL TO MATCH STORAGE MEDIA FOR OBSERVATION WELLS LOCATED WITHIN A BMP FACILITY.
USE PIPE BEDDING CHIPS FOR OBSERVATION WELLS LOCATED OUTSIDE BMP FACILITIES
NOTES:
1. GROUNDWATER OBSERVATION WELLS ARE FOR MEASUREMENT OF GROUNDWATER LEVELS WITHIN OR NEAR
STORM DRAINAGE FACILITIES
2. THIS DETAIL IS FOR WELLS INSTALLED BY DRILLING OR BY EXCAVATED PITS
3. LOCATION OF GROUNDWATER OBSERVATION WELLS SHALL BE APPROVED BY ACHD
4. OBSERVATION WELLS NOT ALLOWED IN CURB OR VALLEY GUTTER SECTION
2017 ACHD REVISION
�DAHO STANDARDS
PUBL C WORKS GROUNDWATER STANDARD DRAWING
FOR
CONSTRUCTION OBSERVATION WELL SD627
(ACHD SUPPLEMENT) 2 OF 2
FINISH GRADE
1 2
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2017 ACHD REVISION
IDAHO STANDARDS
PUBL C WORKS GROUNDWATER STANDARD DRAWING
FOR
CONSTRUCTION OBSERVATION WELL SD - 627
(ACHD SUPPLEMENT) 1 OF 2
LEGEND
Gi WELL COVER, 8" DIA. WATERTIGHT GALVANIZED STEEL BOLT DOWN COVER AND CANISTER
0 2 OR 3 BOLT LID WITH 9/16" HEAD AND SAE THREADS, GASKETED
0 CONCRETE (COLLAR), CLASS 3000 (ISPWC SECTION 703)
0 3/8" DIA HOLES OR SLOTS CUT INTO PIPE AT 3" ON CENTER
O TRACER WIRE SHALL BE PLACED ON OUTSIDE OF PVC PIPE, MINIMUM 18 GAUGE, INSULATED, SINGLE-
CONDUCTOR COPPER WIRE, INSULATION COLOR SHALL BE GREEN WITH THREE 6" DIAMETER COILS
PIPE SHALL BE PERFORATED PVC, ASTM D-3035, SDR 35. WELLS BACKFILLED IN A PIT REQUIRE 6"
PIPE. DRILLED WELLS MAY USE 4" PIPE
0' NONWOVEN FILTER FABRIC AROUND OPENINGS AND BOTTOM, FABRIC OVER CHIPS/DRAIN ROCK
POLYPROPYLENE FIBER REINFORCEMENT AT 1 1/2 LBS/CY
O BACKFILL MATERIAL TO MATCH STORAGE MEDIA FOR OBSERVATION WELLS LOCATED WITHIN A BMP FACILITY.
USE PIPE BEDDING CHIPS FOR OBSERVATION WELLS LOCATED OUTSIDE BMP FACILITIES
NOTES:
1. GROUNDWATER OBSERVATION WELLS ARE FOR MEASUREMENT OF GROUNDWATER LEVELS WITHIN OR NEAR
STORM DRAINAGE FACILITIES
2. THIS DETAIL IS FOR WELLS INSTALLED BY DRILLING OR BY EXCAVATED PITS
3. LOCATION OF GROUNDWATER OBSERVATION WELLS SHALL BE APPROVED BY ACHD
4. OBSERVATION WELLS NOT ALLOWED IN CURB OR VALLEY GUTTER SECTION
2017 ACHD REVISION
�DAHO STANDARDS
PUBL C WORKS GROUNDWATER STANDARD DRAWING
FOR
CONSTRUCTION OBSERVATION WELL SD627
(ACHD SUPPLEMENT) 2 OF 2