HomeMy WebLinkAboutR-386803EROSION CONTROL NOTES
CO 1. THESE NOTES SHALL APPEAR FOR PROJECTS - SITE IMPROVEMENTS, SURFACE
(0 WATER UTILITY, WASTEWATER UTILITY, WATER UTILITY, AND TRANSPORTATION PLANS:
C0 2. BEFORE ANY CONSTRUCTION OR DEVELOPMENT ACTIVITY OCCURS, A
O PRE -CONSTRUCTION MEETING MUST BE HELD WITH THE CITY OF RENTON,
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PUBLIC WORKS DESIGN ENGINEER.
Q 3. THE BOUNDARIES OF THE CLEARING LIMITS AND AREAS OF VEGETATION PRESERVATION
AS PRESCRIBED ON THE PLAN(S) SHALL BE CLEARLY FLAGGED BY SURVEY TAPE OR FENCING
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Lu IN THE FIELD PRIOR TO CONSTRUCTION IN ACCORDANCE WITH APPENDIX "D" OF THE SURFACE
WATER DESIGN MANUAL AND OBSERVED DURING CONSTRUCTION. DURING THE CONSTRUCTION
PERIOD, NO DISTURBANCE BEYOND THE CLEARING LIMITS SHALL BE PERMITTED. THE CLEARING
LIMITS SHALL BE MAINTAINED BY THE APPLICANT/ESC SUPERVISOR FOR THE DURATION OF CONSTRUCTION.
4. STABILIZED CONSTRUCTION ENTRANCES SHALL BE INSTALLED AT THE BEGINING OF CONSTRUCTION
AND MAINTAINED FOR THE DURATION OF THE PROJECT. ADDITIONAL MEASURES, SUCH AS
Q CONSTRUCTED WHEEL WASH SYSTEMS OR WASH PADS, MAY BE REQUIRED TO ENSURE THAT ALL
PAVED AREAS ARE KEPT CLEAN AND TRACK OUT TO ROAD RIGHT OF WAY DOES NOT OCCUR
J FOR THE DURATION OF THE PROJECT.
5. ALL REQUIRED SEDIMENTATION/EROSION CONTROL FACILITIES MUST BE CONSTRUCTED AND IN
OPERATION PRIOR TO LAND CLEARING AND/OR CONSTRUCTION TO PREVENT TRANSPORTATION OF
SEDIMENT TO SURFACE WATER, DRAINAGE SYSTEMS AND ADJACENT PROPERTIES. ALL EROSION
O AND SEDIMENT FACILITIES SHALL BE MAINTAINED IN A SATISFACTORY CONDITION UNTIL SUCH TIME
= THAT CLEARING AND/OR CONSTRUCTION IS COMPLETE AND POTENTIAL FOR ON -SITE EROSION HAS
PASSED. THE IMPLEMENTATION, MAINTENANCE, REPLACEMENT AND ADDITIONS TO EROSION/
SEDIMENTATION CONTROL SYSTEMS SHALL BE THE RESPONSIBILITY OF THE PERMITTEE.
6. THE EROSION AND SEDIMENTATION CONTROL SYSTEMS DEPICTED ON THIS DRAWING ARE
Q INTENDED TO BE MINIMUM REQUIREMENTS TO MEET ANTICIPATED SITE CONDITIONS. AS
CONSTRUCTION PROGRESSES AND UNEXPECTED OR SEASONAL CONITIONS DICTATE, THE PERMITEE
SHALL ANTICIPATE THAT MORE EROSION AND SEDIMENTATION CONTROL FACILITIES WILL BE
NECESSARY TO INSURE COMPLETE SILTATION CONTROL ON THE PROPSED SITE. DURING THE
COURSE OF CONSTRUCTION, IT SHALL BE THE OBLIGATION AND RESPONSIBILITY OF THE PERMITEE
TO ADDRESS ANY NEW CONDITIONS THAT MAY BE CREATED BY THE ACTIVITIES AND TO PROVIDE
ADDITIONAL FACILITIES, OVER AND ABOVE MINIMUM REQUIREMENTS, AS MAY BE NEEDED, TO
PROTECT ADJACENT PROPERTIES AND WATER QUALITY OF THE RECIEVING DRAINAGE SYSTEM.
7. APPROVAL OF THIS PLAN IS FOR EROSION/SEDIMENTATION CONTROL ONLY. IT DOES NOT
CONSTITUTE AN APPROVAL OF STORM DRAINAGE DESIGN, SIZE NOR LOCATION OF PIPES, RESTRICTORS,
CHANNELS, OR RETENTION FACILITIES.
8. ANY AREAS OF EXPOSED SOILS, INCLUDING ROADWAY EMBANKMENTS, THAT WILL NOT BE
DISTURBED FOR TWO DAYS DURING THE WET SEASON (OCTOBER 1ST - MARCH 30TH) OR
SEVEN DAYS DURING THE DRY SEASON (APRIL 1ST - SEPTEMBER 30TH) SHALL BE
Co IMMEDIATELY STABILIZED WITH THE APPROVED ERC COVER METHODS (e.g. SEEDING,
MULCHING, PLASTIC COVERING, ETC.).
9. WET SEASON SEASONAL EROSION AND SEDIMENT CONTROL REQUIREMENTS APPLY TO ALL
W CONSTRUCTION SITES CLEARING BEWTEEN OCTOBER 1 AND MARCH 30 INCLUSIVE, UNLESS
W OTHERWISE APPROVED BY THE CITY THROUGH AN ADJUSTMENT PROCESS.
= 10. COVER MEASURES WILL BE APPLIED IN CONFORMANCE WITH APPENDIX "D" OF THE SURFACE
(/) WATER DESIGN MANUAL.
11. ANY AREA NEEDING ERC MEASURES, NOT REQUIRING IMMEDIATE ATTENTION, SHALL BE
ADDRESSED WITHIN SEVEN (7) DAYS.
12. THE ERC FACILITIES ON INACTIVE SITES SHALL BE INSPECTED AND MAINTAINED A MINIMUM OF
ONCE A MONTH OR WITHIN 24 HOURS FOLLOWING A STORM EVENT.
13. AT NO TIME SHALL MORE THAN ONE (1) FOOT OF SEDIMENT BE ALLOWED TO ACCUMULATE WITHIN
A CATCH BASIN. ALL CATCH BASINS AND CONVEYANCE LINES SHALL BE CLEANED PRIOR TO PAVING.
THE CLEANING OPERATION SHALL NOT FLUSH SEDIMENT -LADEN WATER INTO THE DOWNSTREAM SYSTEM.
14. DURING THE TIME PERIOD OF OCTOBER 1ST - MARCH 30TH, ALL PROJECT DISTURBED SOIL AREAS,
THAT ARE TO BE LEFT UN -WORKED FOR MORE THAN 12 HOURS, SHALL BE COVERED
BY MULCH, SODDING, OR PLASTIC COVERING.
15. ANY PERMANENT RETENTION/DETENTION FACILITY USED AS A TEMPORARY SETTLING BASIN SHALL
BE MODIFIED WITH THE NECESSARY EROSION CONTROL MEASURES AND SHALL PROVIDE ADEQUATE
STORAGE CAPACITY. IF THE PERMANENT FACILITY IS TO FUNCTION ULTIMATELY AS AN INFILTRATION
SYSTEM, THE TEMPORARY FACILITY MUST BE ROUGH GRADED SO THAT THE BOTTOM AND SIDES
ARE AT LEAST THREE FEET ABOVE THE FINAL GRADE OF THE PERMANENT FACILITY.
16. PRIOR TO THE BEGINNING OF THE WET SEASON (OCT. 1), ALL DISTURBED AREAS SHALL BE
REVIEWED TO IDENTIFY WHICH ONES CAN BE SEEDED IN PREPARATION FOR THE WINTER RAINS.
DISTURBED AREAS SHALL BE SEEDED WITHIN ONE WEEK OF THE BEGINNING OF THE WET SEASON.
A SKETCH MAP OF THOSE AREAS TO BE SEEDED AND THOSE AREAS TO REMAIN UNCOVERED
SHALL BE SUBMITTED TO THE CITY OF RENTON FOR REVIEW.
STURCTURAL NOTES
1. THESE PLANS APPROVED FOR STANDARD ROAD AND DRAINAGE IMPROVEMENTS ONLY. PLANS
FOR STRUCTURES SUCH AS BRIDGES, VAULTS, WALLS, OR RETAINING WALLS REQUIRE A SEPERATE
REVIEW AND APPROVAL BY THE CITY OF RENTON PRIOR TO CONSTRUCTION.
2. ROCKERIES ARE CONSIDERED TO BE A MEHTOD OF BANK STABILIZATION AND EROSION CONTROL.
ROCKERIES SHALL NOT BE CONSTRUCTED TO SERVE AS RETAINING WALLS. ALL ROCKERIES IN THE CITY
ROAD RIGHT-OF-WAY SHALL BE CONSTRUCTED IN ACCORDANCE WITH CITY STANDARDS. ROCKERIES
OUTSIDE OF ROAD RIGHT-OF-WAY SHALL BE CONSTRUCTED IN ACCORDANCE WITH THE
INTERNATIONAL BUILDING CODE (IBC).
EROSION CONTROL NOTES:
(A) THE SOIL MOISTURE HOLDING CAPACITY OF ALL NEW PREVIOUS SURFACE THAT AT
PROJECT COMPLETION WILL NOT BE COVERED BY IMPERVIOUS SURFACE OR INCORPORATED
INTO A DRAINAGE FACILITY MUST BE PROTECTED. THE DUFF LAYER AND NATIVE TOPSOIL
SHALL BE RETAINED IN AN UNDISTURBED STATE TO THE MAXIMUM STENT FEASIBLE.
(B) ANY DUFF LAYER OR TOPSOIL REMOVED DURING GRADING SHALL BE STOCKPILED ONSITE
IN A DESIGNATED, CONTROLLED AREA NOT ADJACENT TO PUBLIC RESOURCES AND CRITICAL
AREAS. THE MATERIAL SHALL BE REAPPLIED TO OTHER PORTIONS OF THE SITE WHERE
FEASIBLE.
(C) THE SOIL IN ANY AREA THAT HAS BEEN COMPACTED OR THAT HAS SOME OR ALL
OF THE DUFF LAYER OR UNDERLYING TOPSOIL REMOVED SHALL BE AMENDED TO MITIGATE
FOR LOSS OF MOISTURE -CAPACITY. THE AMENDMENT SHALL TAKE PLACE BETWEEN MAY 1
AND OCTOBER 1. REPLACED TOPSOIL SHALL BE A MINIMUM 8 INCHES THICK. REPLACED
TOPSOIL SHALL HAVE AN ORGANIC MATTER CONTENT BETWEEN 8 AND 13 PERCENT DRY
WEIGHT AND A pH SUITABLE FOR THE PROPOSED LANDSCAPE PLANTS.
OFFE ENGINEERS
13932 SOUTHEAST 159TH PLACE
RENTON, WASHINGTON 98058
PHONE: 425-260-3412
CONTACT: DARRELL OFFE, P.E.
CONSTRUCTION SEQUENCE
1. PRE -CONSTRUCTION MEETING.
2. POST SIGN WITH NAME AND PHONE NUMBER OF ESC SUPERVISOR
(MAY BE CONSOLIDATED W/THE REQUIRED NOTICE OF CONSTRUCTION
SIGN).
3. FLAG OR FENCE CLEARING LIMITS.
4. INSTALL CATCH BASIN PROTECTION WHERE REQUIRED.
5. GRADE AND INSTALL CONSTRUCTION ENTRANCE(S).
6. INSTALL TREE PROTECTION FENCING
7. INSTALL PERIMETER PROTECTION (SILT FENCE, BRUSH BARRIER, ETC.)
8. CONSTRUCT SEDIMENT PONDS AND TRAPS, IF REQUIRED
9. GRADE AND STABILIZE CONSTRUCTION ROADS.
10. CONSTRUCT SURFACE WATER CONTROLS (INTERCEPTOR DIKES, PIPE
SLOPE DRAINS, ETC.) SIMULTANEOUSLY WITH CLEARING AND GRADING
FOR PORJECT DEVELOPMENT.
11. MAINTAIN EROSION CONTROL MEASURES IN ACCORDANCE WITH
APPENDIX D OF THE SURFACE WATER DESIGN MANUAL AND
MANUFACTURE'S RECOMMENDATIONS.
12. RELOCATE EROSION CONTROL MEASURES OR INSTALL NEW MEASURES
SO THAT AS SITE CONDITIONS CHANGE THE EROSION AND SEDIMENT
CONTROL IS ALWAYS IN ACCORDANCE WITH THE CITY'S EROSION
AND SEDIMENT CONTROL STANDARDS.
13. COVER ALL AREAS THAT WILL BE UNWORKED FOR MORE THAN SEVEN
DAYS DURING THE DRY SEASON OR TWO DAYS DURING THE WET
SEASON WITH STRAW, WOOD FIBER MULCH, COMPOST, PLASTIC
SHEETING OR EQUIVALENT.
14. STABILIZE ALL AREAS THAT REACH FINAL GRADE WITHIN SEVEN DAYS.
15. SEED OR SOD ANY AREAS TO REMAIN UNWORKED FOR MORE THAN
30 DAYS.
16. UPON COMPLETION OF THE PROJECT, ALL DISTURBED AREAS MUST
BE STABILIZED AND BMP'S REMOVED IF APPROPRIATE.
SILT FENCING TO BE INSTALLED
ON ALL DOWNSLOPES
DUST CONTROL MEASURES WILL BE APPLICABLE.
NOTE:
1. REFER TO LANDSCAPE DWGS FOR
SPECIFIC TREES TO BE FENCED.
II ( INSTALL TREE 1-7/8" STRUCTURAL
PRESERVATION WEIGHT STEEL POST
FENCE 5' FROM SET 2' BELOW GRADE
DRIP LINE WITH 11 GAUGE
GALVANIZED CHAINLINK
uJ MESH. SET POSTS 10'
/ ? I O,C, MAX.
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D_
0
SIGNIFICANT
EXISTING TREE 5' 6'-0" TYP.
TO BE SAVED
MARK TREES TO BE
SAVED WITH FLAGGING
TYPICAL EXISTING TREE PROTECTION
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AS -BUILT
REVISED PER CITY COMMENTS
REVISED PER CLIENT
REVISED PER CITY COMMENTS
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SDMH
RIM=473.32
(UNABLE TO OPEN)
SDMH
RIM=470.70 AyQ
INV=466.45(12"N)
INV=461.82 12"S)
SDMH
RIM=470.42
(UNABLE TO OPEN)
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CALCULATED CENTER SECTION y�
PER REC. NO. 20040723900002
& PLAT 229/034-042
SSMH
RIM=470.84
INV=461.62(E,SW)
(CENTER CHANNEL)
SD C/O
RIM=469.47
CB
RIM=468.85
INV=467.04(12"NE) Tr6,
e
APPROXIMATE LOCATION
OF STORM VAULT
SDMH
VAULT ACCESS
RIM=464.16 A�
A
SDMH
VAULT ACCESS
RIM=462.97
APPROXIMATE LOCATION
OF STORM VAULT Irk,,
BOTTOM VAULT=452.6+/-
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SDMH w
VAULT ACCESS
RIM=459.93 A6,
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EXISTING DRIVEWAY TO BE USED
AS TEMP. CONSTRUCTION ENTRY
SDMH
RIM=459.06
INV=455.1 1(12"N)*
INV=455.1 1 12"SE)*
INV=455.1 1 12"S)*
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CBSLL
RIM=457.37
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INV=455.23 12"E)
INV=455.23�12"N)
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JOINTS IN FILTER FABRIC SHALL BE SPLICED
AT POSTS. USE STAPLES, WIRE RINGS, OR
EQUIVALENT TO ATTACH FABRIC TO POSTS.
POST SPACING MAY BE INCREASER
TO W IF WIRE BACKING 15 USED
CB
RIM=472.75
INV=468.31(12"N)
SDMH
INV=468.21
12"S)
VAULT ACCESS
RIM=469.55
CB
SD C/O
RIM=470.51
CBSLL
RIM=469.53
INV=468.72(4"N)
RIM=470.56
CB
INV=467.85(12"SE)
479.21
INV=466.99
12"SW�
NIM
V=476.30(12"N)
INV=466.9112"W)
INV=476.27 12 E
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0
•
CB SSMH
RIM=483.30
RIM=479.20 INV=471.9(E,S,W)
INV=476.54(12"S) (CENTER CHANNEL)
REMOVE EXISTING
STRUCTURES
Y,�/�197J
;I KEYSTONE RET. WALL
__,iSTING HOUSE
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:ET. WALL 475.0+ -
' 13E
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12"CPEP
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RET. WAL STRUCTURES 4 H
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REMOVE
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x LINK FENCE
REMOVE AC DRIVEWAY EXISTI GARAGE A I A
FF=468.7+/-
4' WOOD PVC
I AQ' m E� FENCE 7 12" CPEP 1 I I
As8--- --- - -- - --- ---
® 88°00'38" E 199.0
- (S 88`19'30" E-BLA)
m -
AC DRIVEWAY TO BE REMOVED
INSTALL FILTER SOCK \7
O 016, �01
5' BARBED
2S2' BY 14 Ga. WIRE OR
EQUIVALENT, IF STANDARD
STRENGTH FABRIC USED
FILTER FABRIC
BACKFILL TRENCH WITH
NATIVE SOIL
2'X4" WOOD POSTS. STEEL FENCE
POSTS, REBAR, OR EQUIVALENT
NOTES
1. CONDITION OF USE
1.1. SILT FENCE MAY BE USED DOWNSLOPE OF ALL DISTURBED AREAS.
1.2. SILT FENCE IS NOT INTENDED TO TREAT CONCENTRATED FLOWS, NOR IS INTENDED TO TREAT SUBSTANTIAL AMOUNTS OF OVERLAND FLOW.
ANY CONCENTRATED FLOW MOST BE CONVEYED THROUGH THE DRAINAGE SYSTEM TO A SEDIMENT TRAP OR POND.
2. DESIGN AND INSTALLATION SPECIFICATIONS
2.1. THE GEOTEXTILE USED MOST MET THE
AVAILABLE ON SITE. STANDARD LISTED BELLOW. A COPY OF THE MANUFACTURER'S FABRIC SPECIFICATIONS MOST BE
3010051EVE SIZE (0.60.015MM)FOR SILT FILM
A05 (ASTM D4751)
SO10051EVE SIZE 030Q15NT4 FOR OTHER FABRICS
WATER PERMITTIVITY ASTM D491
0.025EC^1 MINIMUM
180USS.MIN. FOR EMRASTRENGHFABRIC
GRAB TENSILE STRENCHT(ASTM D4632)
IW W5. MIN. FOR STANDARD 5TRENGHT FABRIC
GRAB TENSILE ELONGATION ASTM D4632'30%MAX.
ULTRAVIOLATE RESISTANCE ASTM D4355
70%MIN.
2.2. STANDARD STRENGTH FABRIC REQUIRES WIRE BACKING TO INCREASE THE STRENGTH OF THE FENCE. WIRE BACKING OR CLOSER POST
SPACING MAY BE REQUIRED FOR EXTRA STRENGTH FABRIC IF FIELD PERFORMANCE WARRANTS A STRONGER FENCE.
2.3. WHERE THE FENCE IS INSTALLED, THE SLOPE SHALL NOT BE STEEPER THAN 211V
2.4. IF A TYPICAL SILT FENCE IS USED, THE STANDARD 4X4 TRENCH MAY NOT BE REDUCED AS LONG AS THE BOTTOM 8 INCHES OF THE SILT FENCE
IS WELL BURIED AND SECURE IN A TRENCH THAT STABILIZES THE FENCE AND DOES NOT ALLOW WATER TO BYPASS OR UNDERMINE THE SILT
FENCE.
3. MAINTENANCE STANDARDS
3.1. ANY DAMAGE SHALL BE REPAIR IMMEDIATELY.
3.2. IF CONCENTRATED FLOES ARE EVIDENT UPHILL OD THE FENCE, THEY MUST BE INTERCEPTED AND CONVEYED TO A SEDIMENT TRAP OR POND.
3.3. IT IS IMPORTANT TO CHECK THE UPHILL SIDE OF THE FENCE FOR SIGNS OF THE FENCE CLOGGING AND ACTING AS A BARRIER TO FLOW AND
THEN CAUSING CHANNELIZATION OF FLOWS PARALLELTO THE FENCE. IF THIS OCCURS, REPLACE THE FENCE OR REMOVED THE TRAP
SEDIMENT.
3.4. SEDIMENT MOST BE REMOVED WHEN SEDIMENT IS 6 INCHES HIGH.
3.5. IF THE FILTER FABRIC (GEOTEXTILE) HAS DETERIORATED DUE TO ULTRAVIOLET BREAKDOWN, IT SHALL BE REPLACED.
PUBLIC WORKS SILT FENCE STD. PLAN - 214.00
DEPARTMENT
p MARCH 2O08
SURVEYED:
HANSEN SURVEYING
SCALE:
DLO
02/21/18
DESIGNED:
D.L. OFFE, P.E.
DLO
6/28/17
DLO
8/16/16
DR4WN`
ONE INCH
DLO
8/ 1 8/ 1 5
CHECKED:
AT FULL SCALE
IF NOT ONE INCH
SCALE ACCORDINGLY
BY
DATE
i APPR
APPROVED:
VERTICAL: NAVD 1988
HORIZONTAL: NAD 1983/1991
DATU M
}(9
1 �� ra
CBS
INSTALL TREE PROTECTION
FENCING (TYPICAL)
CB
RIM=481.35
INV=479.27 4" 5)
INV=478.32 12"E)
CROSS SECTIONS
SEE SHEET 2
TYPICAL
"`e0
\--",-6' WOOD
FENCE
FND IRC #38408
0.56' N & 0.38' E
WET SEASON EROSION CONTROL MEASURES ARE APPLICABLE
IN WET SEASON (OCT. 1st - APRIL 30th). SEE NOTES ON
SHEET 3
NO SITE RUNOFF SHOULD GO TO ADJACENT
PROPERTIES DURING CONSTRUCTION AND
AFTER CONSTRUCTION
DIRT QUANTITIES
CUT EXCAVATION) 260 CU. YDS.
FILL BACKFILL) 260 CU. YDS.
CONSTRUCTION RECORD DRAWING
THIS CONSTRUCTION REORD DRAWING IS A COPY OF A CAD FILE PREPARED
BY OFFE ENGINEERS, PLLC AND HAS BEEN EDITED TO REFLECT FIELD VERIFIED
INVERT AND RIM ELEVATIONS OF THE STORM, SANITARY AND WATER SYSTEM. FIELD
VERIFIED INVERT AND RIM ELEVATIONS WERE PROVIDED BY 4 SITE SURVEYING, LLC ON
JANUARY 25, 2018. THE ON -SITE PRIVATE STORM DRAINAGE AND PUBLIC/PRIVATE
WATER AND SEWER SYSTEMS WERE INSTALLED IN ACCORDANCE WITH THE APPROVED
PLANS AND THE DOCUMENTED FIELD REVISIONS AND FUNCTION AS INTENDED.
CITY OF
RENTON
Planning/Building/Public Works Dept.
GRAPHIC SCALE
0 15 30 60
inch = 30 feet
RECORD DRAWINGS R-386803
IN COMPLIANCE WITH CITY OF RENTON STANDARDS
MAIR SHORT PLAT
ANDREW MICHAEL CONSTRUCTION, LLC
EROSION CONTROL/TREE RETENTION PLAN
13606 156th AVENUE SE
Ln
0
O
L0
DATE: O
02/21/2018 T
FIELDBOOK: '+^
PAGE: V J
DRAWING NO:
SHEET: OF:
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