A04 1167728 EWP_2025_McDowellCo_CoalHeritageRd_SpiceCk-Dwgs_20251114.pdf
PDF 8 MB Posted
- Attached to
- EWP Streambank Stabilization McDowell County, WV. Federal contract opportunity
- Solicitation number
- 12FPC326B0014
About this file
This is a technical design and construction document prepared by the Natural Resources Conservation Service (NRCS) under the Emergency Watershed Protection Act for streambank stabilization work in McDowell County, West Virginia. The project addresses erosion and streambank damage at two sites along Coal Heritage Road near Spice Creek: Site 1 at 12673 Coal Heritage Road (coordinates N37.445070, W81.702405) and Site 2 at 13008 Coal Heritage Road (coordinates N37.443020, W81.697523). The document was prepared by N. Knox in September 2025 with design approval dated 9/2025, drawn approval 10/2025, and checked approval 11/2025.
Site 1 involves rock riprap streambank stabilization spanning approximately 390 tons of riprap with grout, 598 square yards of geotextile, 103 tons of blanket drain aggregate, 70 linear feet of foundation preparation on shallow bedrock, 40 linear feet of 3-inch drain pipe, 10 linear feet of perforated drain pipe, 10 drain pipe caps, and 5 drain pipe tees. Site 2 involves a 9-foot high gabion wall measuring 105 feet in length with 198 cubic yards of gabions, 210 tons of rock riprap foundation preparation, 280 square yards of rock riprap geotextile, and 70 square yards of shallow bedrock foundation preparation. Construction notes specify utility location via Call 811, restoration of access roads and fences, erosion control measures per West Virginia Department of Highways standards, and material disposal at approved offsite locations. All excavation limits, channel configurations, and stabilization details are provided through comprehensive technical drawings with multiple sections and details sheets.
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Other files for this federal contract opportunity
| File | Type | Posted |
|---|---|---|
| C05 12FPC326B0014 Amendment 4.pdf | ||
| C05 12FPC326B0014 Amendment 4.pdf | ||
| C04 12FPC326B0014 EWP_2025_McDowellCo_CoalHeritageRd_SpiceCk-Dwgs_20260813_v3.pdf | ||
| C05 12FPC326B0014 Amendment 3.pdf | ||
| C04 12FPC326B0014 003 EWP_2025_McDowellCo_CoalHeritageRd_SPECS_Updated_20260804ad.pdf | ||
| C04 12FPC326B0014 003 EWP_2025_McDowellCo_CoalHeritageRd_SpiceCk-Dwgs_20260803_v2.pdf | ||
| C05 12FPC326B0014 Amendment 2.pdf | ||
| C04 12FPC326B0014 Amendment 1.pdf | ||
| 12FPC326B0014.pdf | ||
| A04 1167728 EWP_2025_McDowellCo_WarCreekRd_WarCk-Dwgs_20251114.pdf | ||
| C04 12FPC326B0014 Wage Determination.pdf | ||
| A04 1167728 February 2025 EWP Event along Spice Creek - Spec List with SPECS Updated_20251107adv3.pdf |
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Text version
Na tu ra l R es ou rc es
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UTILITY NOTIFICATION
"The Natural Resources Conservation Service makes no representation as to the existence or non-existence of any utilities at the construction site. Shown on these construction drawings are those utilities which have been identified. It is the responsibility of the contractor(s) to assure themselves that no hazard exists or damage will occur to utilities."
COVER SHEET
QUANTITIES AND CONSTRUCTION NOTES
LOCATION MAP
SHEET LIST TABLE
SITE 1 - SITE MAP - 12673 COAL HERITAGE ROAD
SHEET TITLE
SITE 1 - PLAN VIEW
TYPICAL GROUTED ROCK RIPRAP SECTION & DETAILS
SITE 2 - PLAN VIEW
TYPICAL CHANNEL BOTTOM CONFIGURATION
TYPICAL GROUTED ROCK RIPRAP DETAILS
SITE 2 - SITE MAP - 13008 COAL HERITAGE ROAD8
TYPICAL FOUNDATION PREPARATION ON ROCK RIPRAP DETAILS
TYPICAL GABION WALL SECTION & DETAILS
TYPICAL GABION WALL DETAILS
TYPICAL FOUNDATION PREPARATION ON SHALLOW BEDROCK DETAILS
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%%ULOCATION MAP
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JOB APPROVAL
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CLASS V
AutoCAD SHX Text DRAWINGS PREPARED UNDER THE AUTHORITY OF THE EMERGENCY WATERSHED PROTECTION ACT by the NATURAL RESOURCES CONSERVATION SERVICE of the UNITED STATES DEPARTMENT OF AGRICULTURE STREAMBANK STABILIZATION COAL HERITAGE ROAD, SPICE CREEK SITES 1 & 2 DAMAGE SURVEY REPORT NO. 54-01-25-5087-002 MCDOWELL COUNTY, WEST VIRGINIA ra l R es ou rc es
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* THE AREA REQUIRED FOR OVERLAP IS NOT
INCLUDED IN THE QUANTITY FOR GEOTEXTILE.
CONSTRUCTION NOTES
1. Call 811 to locate utilities prior to mobilization and excavation.
2. Access roads shall be restored to pre-construction condition or better.
3. All fences removed and/or damaged as a result of the contractor's operations shall be restored to a condition equal to or better than they existed before the start of work.
4. Soil compacted as a result of construction operations shall be loosened for a depth of 6-inches below the compacted soil layer and re-graded to blend with existing ground.
5. Provide sub-channel as shown on Typical Channel Bottom Configuration drawing.
6. While working in the stream all efforts will be made to reduce downstream impacts including keeping the excavator tracks elevated above flowing water. A diversion berm shall be established at the top of each stream access point to minimize surface water from flowing toward the stream.
7. Required pollution control measures shall be installed as needed in accordance with Construction Specification 5, Pollution Control.
8. Site access shall be off the main road and shall be in accordance with all West Virginia Department of Highways rules and guidelines. The contractor shall provide signage and flagmen for traffic control as required. See Construction Specification 9, Traffic Control.
9. Excess material from the excavation & obstruction removal shall be wasted off-site in accordance with all local, state, & federal regulations and as approved by the NRCS representative in the field. Floodplains will not be allowed as waste areas under any circumstances. Waste areas shall be seeded according to Construction Specification 6, Seeding, Sprigging and Mulching.
10. The contractor shall provide approved fill as required to complete the work.
11. Trash, tires, & woody debris within the work limits shall be disposed of off-site in an approved landfill. The contractor shall be responsible for the landfill tipping fees.
12. All pipes encountered in the embankment shall be extended through the rock riprap and/or gabions with the same pipe material or better to the face of the slope or baskets.
13. Pipes 12" diameter and larger shall be encased in a minimum of 6" of concrete when passing through rock riprap and/or gabions. Concrete shall have a minimum compressive strength of 2500 psi.
14. The contractor shall maintain the cleanliness of public and private roads impacted by hauling operations during the duration of the work.
15. Starting location of the streambank stabilization measure will be marked in the field.
16. Reshape/transition the stream's bank at the upstream and downstream ends of stabilization measures as directed by NRCS representative.
17. After the foundation is excavated, NRCS representative shall determine if foundation preparation will be required and type. Foundation preparation quantities not included or covered by the variation in quantity clause.
SITE 2 - TABLE OF ESTIMATED QUANTITIES
GABION
GEOTEXTILE
SY*
RIPRAP
TONS
GABIONS
CY
EARTH FILL
CY
FOUNDATION PREPARATION
SHALLOW BEDROCK
SY**
FOUNDATION PREPARATION
ROCK RIPRAP
TONS***
FOUNDATION PREPARATION
ROCK RIPRAP GEOTEXTILE
SY***
196 0 198 70 210 280AS NEEDED
** QUANTITIES ASSUMING BEDROCK
ENCOUNTERED FOR ENTIRE LENGTH.
*** QUANTITIES ASSUMING ROCK RIPAP
FOUNDATION FOR ENTIRE AREA.
GEOTEXTILE
SY*
BLANKET
DRAIN
TONS
RIPRAP
TONS
GROUT
RIPRAP
CY
FOUNDATION PREPARATION
SHALLOW BEDROCK
LF**
598 103 390 78 70
SITE 1 - TABLE OF ESTIMATED QUANTITIES
DRAIN PIPE
LF
DRAIN PIPE
PERFORATED
LF
DRAIN PIPE
CAP
EA
DRAIN PIPE
TEE
EA
EARTH FILL
CY
AS NEEDED
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SITE 1 - 12673 COAL HERITAGE ROAD
LAT: N37.445070 LON: W81.702405
SITE 2 - 13008 COAL HERITAGE ROAD
LAT: N37.443020 LON: W81.697523
FEET
0 2000 4000
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CONSTRUCTION LIMITS
ROCK RIPRAP STREAMBANK STABILIZATION.
SEE DETAILS, SHEETS 5 - 7.
COAL HERITAGE ROAD
12673
CL
CL
C L
CL
CL
CL TBM1
SPICE CREEK
TUG FORK
TBM2
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NAD83 WV STATE PLANE, SOUTH ZONE, US FOOT GRID. NAVD88 VERTICAL DATUM
ELEVATIONEASTINGNORTHINGDESCRIPTION
PROJECT CONTROL
TBM2 - PK NAIL IN EDGE OF ROAD 1075.971764728.46162855.13
TBM1 - DUPLEX NAIL IN POWER POLE 1076.701764692.86162833.36
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COAL HERITAGE ROAD
12673
CL
CL
CL
CL
C L
C L
C L
CL
CL CL
CL
CL CL
TBM2
TBM1
EXISTING SIGN, WITH BURIED
ELECTRIC. DO NOT DISTURB
OHOHOH
O H
O H
OVERHEAD UTILITY
GRAVEL BAR
EXISTING BRIDGE WINGWALL. DO NOT
DISTURB. KEY AND TRANSITION ROCK
RIPRAP SLOPE TO EXISTING
ACCESS
70'
KEY AND TRANSITION ROCK
RIPRAP SLOPE TO EXISTING
RESTORE ORIGINAL STREAM
BOTTOM WIDTH APPROX 20'
0.4 MILES TO RODERFIELD, W
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LEGEND
TOP OF BANK
TOE OF SLOPE
EDGE OF PAVED ROAD
CONSTRUCTION LIMITSCL
CONTROL POINT
NOTES
1. CHANNEL CLEARING AND DEBRIS DISPOSAL SHALL BE DIRECTED BY
THE NRCS REPRESENTATIVE.
2. BORROW MATERIAL SHALL BE TAKEN FROM GRAVEL BAR WITHIN THE
CONSTRUCTION LIMITS AS DIRECTED BY THE NRCS REPRESENTATIVE.
3. DISPOSAL AREA FOR EXCAVATED MATERIAL SHALL BE AT AN
APPROVED LOCATION OFFSITE.
4. CONTRACTOR SHALL CONSERVE SUITABLE MATERIALS
FOR FINAL GRADING AND SEEDING OPERATIONS.
UTILITY POLE
WATER METER
TBM#
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EXISTING
GROUND
SECTION - GROUTED ROCK RIPRAP
3' MIN. OR TO BEDROCK. IF BEDROCK
ENCOUNTERED, SEE TOE ON BEDROCK
DETAIL, SHEET 7.
8'
EXCAVATION
LIMITS
1'- 6"
6"
3'
8'
3' OF D50 = 18" ROCK RIPRAP PLACED WITH
VOIDS FOR GROUT PLACEMENT. FOR DETAILS,
SEE CONSTRUCTION SPECIFICATION 62
BLANKET DRAIN
1' OF #57 AGGREGATE
1' MIN. OF TOPSOIL ON GEOTEXTILE
OVER TOP OF RIPRAP. PROVIDE
POSITIVE DRAINAGE.
GEOTEXTILE
2'
4'
7.5'
5.4'
FLOW
OR
POSITIVE DRAINAGE
DRAIN PIPE, 3" DIA. SCH. 40
ASTM D1785 SOLID PIPE, 10'
C.C. (MAX). SLOPE TO DRAIN.
SEE DETAILS, SHEET 7.
6"
DRAIN PIPE, 3" DIA. SCH. 40
ASTM D1785 PERFORATED PIPE.
SEE DETAILS, SHEET 7.
FINAL GRADE. SEE TYPICAL CHANNEL
BOTTOM CONFIGURATION ON
SHEET 14.
EXCAVATION LIMITS. BACKFILL AFTER
ROCK RIPRAP WITH GROUT PLACEMENT.
1'
BEGINNING/END OF ROCK
RIPRAP STABILIZATION
PLAN - RIPRAP KEY
GEOTEXTILEBLANKET DRAIN
ROCK RIPRAP WITH GROUT
TOP OF ROCK RIPRAP SLOPE
TOE OF ROCK RIPRAP SLOPE
INSTALL ALONG SLOPE FROM
THE TOE OF EXCAVATION TO
TOP OF ROCK RIPRAP.
TYP.
RIPRAP KEY
TOE OF
EXCAVATION
TOP OF ROCK RIPRAP
AND BLANKET DRAIN
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EXISTING
GROUND
0' TO 3' MAX.
EXCAVATION
LIMITS
1'- 6"
BLANKET DRAIN
1' OF #57 AGGREGATE
CHANNEL BOTTOM
GEOTEXTILE
2'
DRAIN PIPE, 3" SCH. 40 ASTM
D1785 SOLID PIPE, 10' C.C.
(MAX). SLOPE TO DRAIN.
6"
SECTION - TOE ON BEDROCK
BEDROCK
2'- 6" EQUAL EQUAL
#8x4' REBAR 5' C.C MAX.
DRILL 1-1/4" DIA HOLE INTO BEDROCK.
EPOXY OR GROUT NOT REQUIRED.
6"
8'
1' MIN. OF TOPSOIL ON GEOTEXTILE
OVER TOP OF RIPRAP. PROVIDE
POSITIVE DRAINAGE. 1'
(CONDITIONAL - SHALLOW BEDROCK)
3' OF D50 = 18" ROCK RIPRAP PLACED WITH
VOIDS FOR GROUT PLACEMENT. FOR DETAILS,
SEE CONSTRUCTION SPECIFICATION 62
TEE
120°
PERFORATED PIPE
1'
2.5"
1"
PERFORATED PIPE WITH
TWO ROWS OF 3 8" HOLES
ANIMAL GUARD, 12" STAINLESS
BOLT WITH WASHERS AND NUT
2" FROM END.
ANIMAL GUARD
END CAP
PLAN - DRAIN PIPE
2"ANIMAL GUARD
DRAIN PIPE, 3" DIA. SCH. 40
ASTM D1785 SOLID PIPE
8'
END CAP
3" DIA. TWO-WAY
CLEANOUT TEE
1'DRAIN PIPE, 3" DIA SCH. 40,
ASTM D1785 PERFORATED
PIPE. SEE DETAILS ABOVE.
BEGIN/END BLANKET
DRAIN, 5' MAX. FROM
END CAP
BLANKET DRAIN
#57 AGGREGATE
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CONSTRUCTION LIMITS
CL
CL
CL
CLCL
C L
GABION WALL STREAMBANK STABILIZATION.
SEE DETAILS, SHEETS 9 - 13.
TBM2
TBM3
COAL HERITAGE ROAD
13008
0.7 MILES TO RODERFIELD, W
V
SPICE CREEK
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NAD83 WV STATE PLANE, SOUTH ZONE, US FOOT GRID. NAVD88 VERTICAL DATUM
ELEVATIONEASTINGNORTHINGDESCRIPTION
PROJECT CONTROL
TBM3 - PK NAIL IN EDGE OF ROAD 1104.101766088.01162076.26
TBM2 - DUPLEX NAIL IN POWER POLE 1102.971765995.21162140.50
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C L
CL
CL
CL
CL
CL
CL
CL
CLCL
CL
CL
TBM3
TBM2
END AT EXISTING CRIB WALL
EXISTING FENCE
DO NOT DISTURB
105' OF 9' HIGH GABION WALL
COAL HERITAGE ROAD
13008
RESTORE ORIGINAL STREAM
BOTTOM WIDTH APPROX 18'
OH
OH
OH
OH
OH
OH
OVERHEAD UTILITY
DEBRIS REMOVAL -
EXISTING CONCRETE
SLAB.
BEGIN AT EXISTING GABION WALL
DOWNSTREAM OF EXISTING BRIDGE.
SET GABION WALL AT ELEVATION 1094.1
OH
0.7 MILES TO RODERFIELD, W
V
INSTALL COUNTERFORT AT BEGINNING,
MIDDLE AND END OF GABION WALL.
SEE DETAILS, SHEETS 10 & 11.
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LEGEND
TOP OF BANK
TOE OF SLOPE
EDGE OF ACCESS ROAD
CONSTRUCTION LIMITSCL
CONTROL POINT
NOTES
1. CHANNEL CLEARING AND DEBRIS DISPOSAL SHALL BE DIRECTED BY
THE NRCS REPRESENTATIVE.
2. BORROW MATERIAL SHALL BE TAKEN FROM WITHIN THE
CONSTRUCTION LIMITS AS DIRECTED BY THE NRCS REPRESENTATIVE.
3. DISPOSAL AREA FOR EXCAVATED MATERIAL AND DEBRIS SHALL BE AT
AN APPROVED LOCATION OFFSITE.
4. GABION WALL ALIGNMENT, LAYOUT, LENGTH AND HEIGHT MAY VARY
AS DETERMINED BY THE NRCS REPRESENTATIVE.
5. BACKFILL MATERIAL BEHIND GABIONS SHALL BE FROM CHANNEL
SHAPING AND/OR STOCKPILED MATERIAL AS DIRECTED BY THE NRCS
REPRESENTATIVE. .
UTILITY POLE
TBM#
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SECTION - 9' HIGH GABION WALL
2' MIN. EMBEDMENT OR TO BEDROCK
IF BEDROCK IS LESS THAN 2', SEE
FOUNDATION PREPARATION ON
SHALLOW BEDROCK, SHEET 12.
6'x 3'x 3'
2' MIN. 1' MIN.
LOWEST POINT
IN STREAM
EXCAVATION LIMITS
BACKFILL AFTER GABION
INSTALLATIONEXCAVATION LIMITS
GEOTEXTILE
6'x 4.5'x 3'
7'
EXISTING
GROUND
TYP.
1.5'
POSITIVE DRAINAGE
6' MIN.
NOTES
1. SEE TYPICAL CHANNEL BOTTOM CONFIGURATION SHEET 14.
2. REFER TO SHEET 2 FOR ESTIMATED QUANTITIES.
3. AFTER THE FOUNDATION IS EXCAVATED, NRCS
REPRESENTATIVE SHALL DETERMINE IF FOUNDATION
TREATMENT WILL BE REQUIRED AND TYPE. SEE CONDITIONAL
FOUNDATION TREATMENT DETAILS ON SHEETS 12 & 13.
4. THE CONTRACTOR SHALL ONLY EXCAVATE THE AMOUNT OF
FOUNDATION NEEDED TO INSTALL THE BOTTOM LAYER OF
GABION WALL INTENDED TO PLACE PER MANUFACTURER'S
RECOMMENDATIONS DURING THE SAME WORKDAY.
5. BACKFILL BEHIND EACH LAYER OF GABIONS AS THE LAYERS
PROGRESS VERTICALLY. BACKFILL MATERIAL SHALL BE
APPROVED AND BE FREE OF TRASH, CONCRETE, WOODY
DEBRIS, ETC. CONSERVE SUITABLE MATERIALS FOR FINAL
GRADING AND SEEDING OPERATIONS.
1' BACKFILL
OR FLATTER BASED
ON ACTUAL SITE
CONDITIONS
9.5
6°
FINAL GRADE. SEE TYPICAL
CHANNEL BOTTOM CONFIGURATION
ON SHEET 14.
EXISTING CHANNEL
BOTTOM
12' (MAX.) LEADING
EXCAVATION
SEE NOTE 4
BACKFILL AND NEXT LAYER
TRAILING COMPLETED
LOWER LAYER
WHEN MORE GABIONS ARE INTENDED,
LEAVE LAST GABION EMPTY TO
FACILITATE LACING THE NEXT AS
PLACEMENT PROGRESSES.
PROFILE - GABION
PLACEMENT/FILLING SEQUENCE
FOUNDATION GRADE
BOTTOM LAYER
9' (MIN.) COMPLETED LOWER LAYER IN
ADVANCE OF BACKFILL OF ADJACENT
GABIONS AND START OF NEXT LAYER
6'x 3'x 3'
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CONSTRUCTION NOTES
1. EACH VERTICAL SEAM SHALL BE LACED PRIOR TO SETTING BASKET
IN PLACE AND PRIOR TO LACING TO ADJOINING BASKETS.
2. EACH BASKET SHALL BE LACED TO THE ADJOINING BASKET AT ALL
VERTICAL EDGES AND HORIZONTAL EDGES.
3. EACH DIAPHRAGM SHALL BE LACED TO THE LID OF THE BASKET
AFTER CLOSING. DIAPHRAGM SHALL BE LACED ALONG ALL SIDES.
4. ALL LACING SHALL BE DONE WITH 13.5 GAUGE WIRE USING THE TWO,
ONE, TWO, LOOPING PROCEDURE AS SHOWN IN THE LACING DETAILS.
5. ALL WIRE SHALL BE TIGHTLY LACED AND THE ENDS OF THE LACING
WIRE SHALL BE DOUBLED BACK AND TWISTED NOT LESS THAN THREE
TURNS AROUND ITSELF IN A LENGTH NOT GREATER THAN ONE INCH.
6. INSTALL ACCORDING TO MANUFACTURER'S RECOMMENDATIONS.
7. GABION BASKET LENGTH MAY VARY FROM TYPICAL LAYER DIAGRAM
WHERE APPLICABLE TO STAGGER SEAM WITH LAYER BELOW AS
APPROVED BY THE NRCS REPRESENTATIVE.
6'x 4.5'x 3'
6'x 3'x 3'
9' HIGH GABION WALL
WITH COUNTERFORT
1/3 H
1/3 H
1/3 H
1/3 L 1/3 L
1/3 L
INTERIOR SUPPORT DETAIL
5"5"
LACING DETAIL
1/3 L 1/3 L
1/3 L
LA
YE
R
LA
YE
R
6'x 3'x 3'
6'x 3'x 3'
6'x 3'x 3'
9'
LAYER 3
6'x 3'x 3'
6'x 4.5'x 3'
6'x 3'x 3'
LAYER 2 LAYER 1
FR
O
N T
FA
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FR
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FA
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FR
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FA
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E6'x 3'x 3'
6'x 3'x 3'
6' x
3' x
3'
6' 4.5' 3'
12'
COUNTERFORT
LAYER DIAGRAM
INSTALL COUNTERFORT AT
BEGINNING, MIDDLE AND
END OF GABION WALL.
3'
6'x 3'x 3'
9'x 3'x 3'
6'x 4.5'x 3'
6'x 3'x 3'
6'x 4.5'x 3'
3'
6'x 3'x 3'
WIRE DOUBLED BACK
AND TWISTED
LA
YE
R
6'x 3'x 3' 6'x 3'x 3'
6' x
3' x
3'
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1.25'
(TYP.)
VARIES
VA
R
IE
S
1' MIN. TO 1.5' MAX.
0' TO 2' MAX.
CHANNEL BOTTOM
1.5'
2.5'
PROFILE - GABIONS WITH REBAR SPACING
BEDROCK
1.25' MAX.
(TYP.)
2.
5'
M
AX
(T
YP
1.25' (TYP.)
NO. 10 REBAR
(TYP.)
NO. 10 REBAR
(TYP.)
G
AB
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N
W
ID
TH
VARIES
FOUNDATION PREPARATION PAYMENT LIMITS
1' MIN. TO 1.5' MAX.
FO
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PLAN - GABIONS WITH REBAR/DRILLHOLE PATTERN
0' TO 2' MAX.
VA
R
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S
1.5'
2.5'
2.5' MAX.
(TYP.)1' MIN. TO 1.5' MAX.
FINAL GRADE
SECTION - GABIONS WITH REBAR SPACING
MAXIMUM ANGLE OF
REBAR/DRILLHOLE PATTERN
~1.5'
~2.5'
15° MAX.
VERTICAL NO. 10 REBAR
(TYP.)
MAX. TILT OF
REBAR/DRILLHOLE
FRONT OF
GABION
BACK OF
GABION
CHANNEL BOTTOM
BEDROCK
1' MAX.
BEDROCK
NOTES:
1. Drill holes for Rebar shall be 1 3/8" diameter. The use of epoxy or non-shrink grout is not required. The rebar shall be driven by hammer to the required depth without bending.
2. Care shall be taken by the contractor to prevent damage to the rebar during gabion filling operations.
FOUNDATION PREPARATION SHALLOW BEDROCK
(CONDITIONAL)
3. Different gabion bottom layer configurations will require additional rebar by repeating the pattern shown. Quantities on sheet 2 based on bottom width x length.
4. Final pattern and spacing to be directed by NRCS representative in the field.
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9.5
6°
FINAL
GRADE
EXCAVATION LIMITS
BACKFILL AFTER GABION
INSTALLATION
EXCAVATION LIMITS
BACKFILL AFTER
GABION INSTALLATION
POSITIVE DRAINAGE
SECTION - GABION WALL
1.5'
1.5'
3' MIN.
VA
R
IE
S
FOUNDATION PREPARATION PAYMENT LIMITS
VARIES WITH GABION CONFIGURATION.
ASSUMED 12' FOR QUANTITIES ON SHEET 2.
NRCS REPRESENTATIVE WILL DETERMINE
DEPTH OF ROCK RIPRAP IN THE FIELD.
ASSUMED 3' FOR QUANTITIES ON SHEET 2.
GEOTEXTILE
0.6'
ROCK RIPRAP,
6"- 18" GRADATION.
OR FLATTER BASED ON
ACTUAL SITE CONDITIONS
2' MIN. BACKFILL
NRCS REPRESENTATIVE WILL DETERMINE
DISTANCE BASED ON ACTUAL SITE CONDITIONS
ASSUMED 3' FOR QUANTITIES ON SHEET 2.
FINAL GRADE. SEE TYPICAL CHANNEL
BOTTOM CONFIGURATION ON
SHEET 14.
FOUNDATION PREPARATION ROCK RIPRAP
(CONDITIONAL)
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Notes:
1. Final location of subchannel to be located in the field by the NRCS representative. The subchannel shall be transitioned as necessary to meet existing grades at the upstream and downstream site extents.
2. Subchannels are not required for bedrock streambeds.
3. Use material from the required excavations and/or approved fill from offsite to reconstruct streambanks as necessary. Seed and mulch per
Construction Specification 6, Seeding, Sprigging and Mulching.
EXISTING
GROUNDFINAL CHANNEL BOTTOM SHALL
BE ROUGH & IRREGULAR.
PROVIDE POSITIVE DRAINAGE
TOWARD SUBCHANNEL.
~1
~1
1'
1/3 BW
SUBCHANNEL
BOTTOM WIDTH
(BW)
~2
DEPOSITION VARIES
CHANNEL BOTTOM CONFIGURATION
SEE SITE PLAN
STREAMBANK STABILIZATION
MEASURE, GABION WALL OR
ROCK RIPRAP SLOPE.
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| Sheets and Views |
| 8.5x11 Cover |
| MC-CHR_2-QuantitiesNotes.pdf |
| Sheets and Views |
| 2-QuantitiesNotes |
| MC-CHR_3-LocationMap.pdf |
| Sheets and Views |
| 8.5x11 LOCATION |
| MC-CHR_4-Site1-SiteMap.pdf |
| Sheets and Views |
| Site2-SitePlan |
| MC-CHR_5-Site1-PlanView.pdf |
| Sheets and Views |
| Site1-PlanView |
| MC-CHR_6-TypGroutedRiprapSection&Details.pdf |
| Sheets and Views |
| 6 RiprapSection |
| MC-CHR_7-TypGroutedRiprapDetails.pdf |
| Sheets and Views |
| 7 RiprapDetails |
| MC-CHR_8-Site2-SiteMap.pdf |
| Sheets and Views |
| Site2-SitePlan |
| MC-CHR_9-Site2-PlanView.pdf |
| Sheets and Views |
| Site2-PlanView |
| MC-CHR_10-TypGabionSectionDetails.pdf |
| Sheets and Views |
| 10_9FT-SEC |
| MC-CHR_11-TypGabionDetails.pdf |
| Sheets and Views |
| 11_9FT-GABION DETAILS |
| MC-CHR_12-TypFoundPrepBedrockDetails.pdf |
| Sheets and Views |
| 12-TYP BEDROCK |
| MC-CHR_13-TypSecRiprapFoundDetails.pdf |
| Sheets and Views |
| 13-RIPRAP FOUNDATION |
| MC-CHR_14-TypChannelBottomDetails.pdf |
| Sheets and Views |
| 14-TYP CHANNEL |
| MC-CHR_5-Site1-PlanView.pdf |
| Sheets and Views |
| Site1-PlanView |
| MC-CHR_2-QuantitiesNotes.pdf |
| Sheets and Views |
| 2-QuantitiesNotes |
| MC-CHR_1-CoverSheet.pdf |
| Sheets and Views |
| 8.5x11 Cover |
| MC-CHR_1-CoverSheet.pdf |
| Sheets and Views |
| 8.5x11 Cover |
| MC-CHR_2-QuantitiesNotes.pdf |
| Sheets and Views |
| 2-QuantitiesNotes |
| MC-CHR_6-TypGroutedRiprapSection&Details.pdf |
| Sheets and Views |
| 6 RiprapSection |
| MC-CHR_7-TypGroutedRiprapDetails.pdf |
| Sheets and Views |
| 7 RiprapDetails |
| MC-CHR_1-CoverSheet.pdf |
| Sheets and Views |
| 8.5x11 Cover |
| MC-CHR_6-TypGroutedRiprapSection&Details.pdf |
| Sheets and Views |
| 6 RiprapSection |
| MC-CHR_2-QuantitiesNotes.pdf |
| Sheets and Views |
| 2-QuantitiesNotes |
| MC-CHR_7-TypGroutedRiprapDetails.pdf |
| Sheets and Views |
| 7 RiprapDetails |
| MC-CHR_6-TypGroutedRiprapSection&Details.pdf |
| Sheets and Views |
| 6 RiprapSection |
| MC-CHR_7-TypGroutedRiprapDetails.pdf |
| Sheets and Views |
| 7 RiprapDetails |
| MC-CHR_1-CoverSheet.pdf |
| Sheets and Views |
| 8.5x11 Cover |
| MC-CHR_6-TypGroutedRiprapSection&Details.pdf |
| Sheets and Views |
| 6 RiprapSection |
| MC-CHR_1-CoverSheet.pdf |
| Sheets and Views |
| 8.5x11 Cover |
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