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CITY OF RENTON
EROSION AND SEDIMENT CONTROL NOTES
1. CLEARING LIMITS:
A. PRIOR TO ANY SITE CLEARING OR GRADING, AREAS TO REMAIN UNDISTURBED
DURING PROJECT CONSTRUCTION SHALL BE DELINEATED. AT A MINIMUM,
CLEARING LIMIT DELINEATION FLAGGING SHALL BE PROVIDED AT THE EDGES
OF ALL VE AREA BUFFERS.
2. KEEP THE GROUND COVERED:
A. MINIMIZE THE AMOUNT OF EXISTING VEGETATION THAT YOU MUST DISTURB FOR
CONSTRUCTION. KEEP OFF SENSITIVE AREAS AND THEIR BUFFERS.
B. ALL DISTURBED AREAS SHALL BE COVERED AND/OR MULCHED WITHIN 12
HOURS, IF THEY ARE TO REMAIN UNWORKED FOR MORE THAN 7 DAYS FROM
MAY 1ST TO SEPTEMBER 30TH. DURING THE MONTHS OF OCTOBER 1ST
THROUGH APRIL 30TH, DISTURBED AREAS MUST BE COVERED OR MULCHED IF
LEFT UNWORKED WITHIN 2 DAYS
C. ACCEPTED MULCH MATERIAL INCLUDES STRAW, WOOD FIBER AND CELLULOSE.
D. AREAS NOT BEING WORKED FOR 30 DAYS OR MORE SHALL BE VEGETATED,
UNLESS THE CITY DETERMINES THAT WINTER WEATHER MAKES VEGETATION
ESTABLISHMENT INFEASIBLE. IF THIS IS THE CASE, IT MUST STILL BE MORE
PERMANENTLY STABILIZED, USING METHODS SUCH AS BONDED FIBER MATRIX OR
OTHER MORE STABLE BMP'S.
E. SLOPES AND STOCKPILES 3H:1V OR STEEPER AND MORE THAN 10 FEET OF
VERTICAL RELIEF SHALL BE COVERED IF THEY ARE UNWORKED FOR MORE THAN 12
HOURS.
F. ALL AREAS NOT BEING WORKED PRIOR TO OCTOBER 1, AND ARE BEING SEEDED,
SHALL BE SEEDED BY SEPTEMBER 23. MULCHING IS REQUIRED TO PROTECT
ALL SEEDED AREAS UNTIL AN ADEQUATE GROWTH IS ESTABLISHED.
G. AREAS THAT ARE BEING HYDRO SEEDED SHALL HAVE A TACKIFIER MIXED
INTO THE HYDRO SEED TO HELP STABILIZE MIXTURE ONTO THE SOIL.
H. ENOUGH COVER MATERIAL TO SUFFICIENTLY PROTECT ALL DISTURBED AREAS
SHALL BE STOCKPILED ON THE SITE AT THE BEGINNING OF THE WET SEASON.
3. DUST CONTROL:
A. DUST IS TO BE CONTROLLED ON THE CONSTRUCTION SITE.
B. WATER TRUCK WILL BE USED TO CONTROL DUST ON DIRT/GRADED AREAS ONLY.
C. NO SITE RUN OFF IS TO BE GENERATED BY OVER USE OF WATERING.
D. CONTROLLING DUST ON PAVED ROADWAYS WILL BE DONE BY THE USE OF A
SWEEPER WITH WATER -JET SPRAYERS. NO RUN OFF FROM SPRAYERS SHALL
REACH THE CATCH BASINS.
4. PERIMETER PROTECTION:
A. PERIMETER PROTECTION TO FILTER SEDIMENT FOR SHEETWASH SHALL BE LOCATED
DOWNSLOPE OF ALL DISTURBED AREAS AND PROPERLY INSTALLED PRIOR TO
UPSLOPE GRADING.
B. 50 LINEAR FEET OF SILT FENCE PER ACRE AND THE NECESSARY STAKES TO HOLD
THE FENCE IN PLACE SHALL BE STORED ON SITE.
5. TRAFFIC AREA STABILIZATION:
A. UNSURFACED DRIVEWAY ENTRANCES, ACCESS ROADS AND PARKING AREAS USED BY
CONSTRUCTION TRAFFIC WILL BE STABILIZED TO MINIMIZE EROSION AND PREVENT
TRACKING MUD.
B. STABILIZED CONSTRUCTION ENTRANCES WILL BE INSTALLED AS THE FIRST STEP OF
CLEARING AND GRADING.
C. CONSTRUCTION ENTRANCES WILL BE SET UP SO THAT ALL TRAFFIC LEAVING
A JOB SITE IS REQUIRED TO TRAVEL THE ENTIRE LENGTH OF ENTRANCE.
D. ROADS AND PARKING AREAS WILL BE STABILIZED IMMEDIATELY AFTER THE INITIAL
GRADING.
E. CONSTRUCTION ENTRANCES WILL BE STABILIZED WHEREVER TRAFFIC WILL BE
LEAVING A CONSTRUCTION SITE AND TRAVELING ON PAVED ROADS OR OTHER
PAVED AREAS WITHIN 1,000 FEET OF THE SITE.
F. ANY SEDIMENT THAT IS TRACKED ONTO PAVEMENT WILL BE REMOVED
IMMEDIATELY BY SWEEPING. THE SEDIMENT COLLECTED BY SWEEPING
SHALL BE REMOVED OR STABILIZED ON -SITE.
G. IF NON-VACTOR TYPE SWEEPERS ARE USED, THE DEPOSITION OF THESE SWEEPERS
MUST BE REMOVED FROM SIDEWALKS AND GUTTERS. THE SEDIMENT
COLLECTED BY SWEEPING SHALL BE REMOVED OR STABILIZED ON -SITE.
H. THE PAVEMENT SHALL NOT BE CLEANED BY WASHING STREETS.
TEMPORARY EROSION CONTROL SEED MIX
(CONTINUED)
EROSION AND SEDIMENT CONTROL NOTES
TESC NOTES AND DETAILS
6. SEDIMENT RETENTION: OF
A. SEDIMENT RETENTION IS REQUIRED UNLESS NO OFF -SITE DISCHARGE IS
ANTICIPATED FOR THE SPECIFIED DESIGN FLOW. PLAT B. SEDIMENT RETENTION FACILITIES WILL BE INSTALLED BEFORE GRADING. DALPAY
SHORT
C ADDITIONAL NPONDS/TRAPS/SYSTEMS ITO ACCOMMODATE ON FACILITIES NEED TO BE RESTORAGE MOVED OCAPACITY DNEED TO BE A PORTION OF THE N.E. 1/4 OF THE S.E. 1/4 OF SECTION 47 TOWNSHIP
INSTALLED ON SITE. THIS WILL BE DONE PRIOR TO REMOVAL OF EXISTING FACILITY.
7. SURFACE WATER CONTROL: 23 N., RANGE 5 E., W.M. CITY OF RENTON, KING COUNTY, WASHINGTON
A. SURFACE WATER CONTROLS ARE REQUIRED UNLESS NO OFF -SITE DISCHARGE IS
ANTICIPATED FOR THE SPECIFIED DESIGN FLOW.
8. SENSITIVE AREA RESTRICTIONS:
A. PHASING AND MORE CONSERVATIVE BEST MANAGEMENT PRACTICES (BMP'S) MUST BE
EVALUATED FOR CONSTRUCTION ACTIVITIES NEAR SURFACE WATERS..
9. MAINTENANCE REQUIREMENTS:
A. LARGE PROJECTS WITHIN SENSITIVE AREAS MAY BE REQUIRED BY THE
CITY TO HAVE A DESIGNATED ESC SUPERVISOR WHO WILL BE RESPONSIBLE
FOR ESC REVIEW,
B. MAINTENANCE AND COMPLIANCE.
C. ESC WILL BE INSPECTED A MINIMUM OF ONCE A WEEK DURING THE WET SEASON
AND WITHIN 24 HOURS OF SIGNIFICANT STORMS (.5 INCHES/24 HOUR, OR
WHERE RUN-OFF IS GENERATED).
D. THE ESC SUPERVISOR MUST BE AVAILABLE, 24 HOURS, FOR RAPID RESPONSE TO
ESC PROBLEMS AND EMERGENCIES.
E. A 24-HOUR PHONE NUMBER FOR THE ESC SUPERVISOR WILL BE POSTED IN A
CLEARLY VISIBLE LOCATION ON THE PROJECT SITE.
10. FINAL STABILIZATION: PRIOR TO FINAL CONSTRUCTION APPROVAL, THE FOLLOWING
CONDITIONS MUST BE MET:
A. ALL DISTURBED AREAS OF THE SITE WILL BE VEGETATED OR OTHERWISE
PERMANENTLY STABILIZED;
B. STRUCTURAL MEASURES SUCH AS SILT FENCE, SLOPE DRAINS, ETC. WILL BE
REMOVED FROM SITE;
C. ALL PERMANENT SURFACE WATER FACILITIES INCLUDING CATCH BASINS, PIPES, ETC.
WILL BE CLEANED;
D. ANY OFF -SITE CATCH BASINS THAT REQUIRED PROTECTION WILL ALSO BE CLEANED; AND
E. IF ONLY THE INFRASTRUCTURE OF THE SITE HAS BEEN DEVELOPED SUCH
AS SHORT PLATS AND SUBDIVISIONS, WITH BUILDING CONSTRUCTION TO OCCUR
UNDER A DIFFERENT
F. PERMIT, THEN THE SENSITIVE AREA BUFFERS, TRACTS, AND SETBACKS WILL BE
CLEARLY MARKED.
CITY OF RENTON, DEVELOPMENT SERVICES STAFF IS AVAILABLE TO ANSWER ANY QUESTIONS YOU
MAY HAVE ABOUT EROSION AND SEDIMENT CONTROL AND WET SEASON STABILIZATION MEASURES
FOR PERMITTED ACTIVITIES IN THE CITY OF RENTON. PLEASE CALL 425-430-7300.
MATERIAL % WEIGHT % PURITY % GERMINATION
CHEWINGS OR RED FESCUE 40 98 90
FESTUCA RUBRA VAR. COMMUTATA OR
FESTUCA RUBRA
ANNUAL OR PERENNIAL RYE 40 98 90
LOLIUM MULTIFLORUM OR LOLIUM PERENNE
REDTOP OR COLONIAL BENTGRASS
AGROSTIS ALBA OR AGROSTIS TENUIS
10
92
85
WHITE DUTCH CLOVER
TRIFOLIUM REPENS
10
98
90
BEST MANAGEMENT PRACTICES (BMP) ALTERNATIVES
MULCH MATERIAL
otmury
STANDARDS
APPUCAT1&q
/1000 SF
APPLICATION
ACRE
DEPTH OF
APPLICATION
II ��
STEEL FENCE POST 6' HIGH MIN. u
NOTE:
1: CLIP FENCE TO GALVANIZED WIRE ® 5 FOOT ON -CENTER SPACING
2. WIRE FENCE TO STEEL FENCE POST
TEMPORARY N.G.P.E. FENCE DETAIL
NOT TO SCALE
I:i#!F_%',A-]
GRAVEL, SLAG, OR
WASHED, 3/4 -1-1/2
9 CU YDS
3 INCHES
FOR SHORT SLOPES AND AROUND WOODY PLANTS & ORNAMENTALS
CRUSHED STONE
SIZE
USE WHERE SUBJECT TO FOOT TRAFIC. APPDX. 2000 LBS/CU YD.
AIR DRIED, FREE FROM
75-100LBS OR
1-1/2 TO 2-1/2
MINIMUM OF 2 IN
USE WHERE THE MULCHING EFFECT IS TO BE MAINTAINED FOR LESS
HAY OR STRAW
UNWANTED SEEDS &
2-3 BALES
TONS OR 90-120
DEPTH, GREATER ON
THAN 3 MONTHS. ANCHOR BY CRIMPING, COVERING WITH NETTING
COARSE MATERIAL
BALES
STEEP AREAS OR NEAR
SPRAYING WITH TACKIFIER AND/OR KEPT MOIST.
PROTECTED AREAS)
PLASTIC SHEETING
MINIMUM 6-MIL
PER CITY OF RENTON STANDARD DETAIL 213.30 ON SHEET C5
THICKNESS
JUTE MAT, WOVEN
N/A
N/A
USE ON STEEP SLOPES GREATER THAN 2:1 IN ADDITION
STRAW BLANKET
TO HYDROSEED OR WOOD FIBER WITH TACKIFIER.
SYNTHETIC FIBER
BLANKET
WOOD FIBER
DYED GREEN SHOULD
25-30 LBS.
1000-1500LBS
IF USED ON CRITICAL AREAS, OR STEEP SLOPES, DOUBLE THE
CELLULOSE (PARTIALLY
NOT CONTAIN GROWTH
NORMAL APPLICATION RATE. APPLY W/HYDROMULCHER. NO
DIGESTED WOOD
INHIBITING FACTORS
TIE -DOWN REQUIRED.
FIBERS)
WOOD FIBER APPLIED
1.25 TONS PER
USE 90 GAL/ACRE TACKIFIER FOR STEEP SLOPES LESS THAN
WITH HYDROSEEDING
ACRE;
2:1; 120 GAL/ACRE FOR STEEPER THAN 2:1
OR ALONE
:11:atyall
WOOD CHIPS TREAT WITH 12LBS
(HOG FUEL) NITOGEN FERTILIZER/TON
HYDROSEED USE MIX RECOMMENDED
ABOVE
OF 2 IN. DEPTH I DO NOT USE ON SLOPES STEEPER THAN 6%
OF 2 IN. DEPTH I DO NOT USE ON SLOPES STEEPER THAN 15%
USE DOT SLOPE MIX FOR STEEP SLOPES.
Z
4
GRAB TENSILE STRENGTH (ASTM D4532)
2T1O LBS. MIN.
GRAB TENSILE ELONGATION (ASTM D4632)
310% MAX. (WOVEN)
CBR PUNCTURE STRENGTH (ASTM W241)
495 LBS. MIN.
ADS [ASTM 04T511
12N45 (U.S. STANDARD SIEVE 81ZE)
2.2. DO NOT USE CRUSHED CONCRETE, CEMENT, OR CALCIUM CHLORIDE FOR CONSTRUCTION ENTRANCE STABILIZATION BECAUSE THESE PRODUCTS RAISE pH
LEVELS IN STCRMWATER AND CONCRETE DISCHARGE TO SURFACE WATERS OF THE STATE IS PROHIBfTED.
2.1 HOG FUEL ( WOOD BASED MULCH; MAY BE SUBSTITUTED FOR OR COMBINED WITH DUARRY SPALLS IN AREAS THAT WILL NOT BE USED FOR PERMANENT ROADS.
HOG FUEL IS NOT RECOMMENDED FOR ENTRANCE STABILIZATION EN URBAN AREAS. THE INSPECTOR MAY AT ANY TIME REQUIRE THE USE OF QUARRY SPALLS
IF THE HOG FUEL IS NOT PREWENTING SEDIMENT FROM BEING TRACKED DWO PAVEMF NT OR IF THE HOG FUEL IS BEING CARRIED ONTO PAVEMENT.
2.4- FENCING SHALL BE INSTALLED AS NI-CESSARY TO RESTRICT TRAFFIC TO THE CONSTRUCTION ENTRANCE
2.5 WHENEVER POSSiBL£. THE ENTRANCE SHALL BE CONSTRUCTED ON A FIRM. COMPACTED SUBGRADE THIS CAN SUBSTANTIALLY INCREASE THE
EFFECTWENESS OF THE PAD BAND REDUCE THE NEED FOR MAINTENANCE
3. MAINTENANCE STANDARDS
3.1. QUARRY SPALLS SHALL 43E ADDED IF THE PAD IS NO LONOER IN ACCORDANCE WITH THE SPECWiCATIDNS.
32- IF THE ENTRANCE IS NOT PREVENTING SEDIMENT FROM BEING TRACKED ONTO PAVEMENT, THEN ALTERNATIVE MEASURES TO KEEP THE STREETS FREE O.z
SEDIMENT $HALL W U$FO. THIS MAY INOLUDE STREET SWEEPING, AN INCREASE IN THE DI3,1I;N$IQN$ OF THS ENTRANCE, OR THE INSTALLATION OF A WHEEL
1 IN N R T 1 T N
WASH, F WASHING 8 USED IT SHALL BE D4 E 41-F AN AREA COVERED WITH CRUSHER RACK, AND WASH WATER SHALL DRAIN O A SEDIMENT RAP OR P4 P
3.3. ANY SEDIMENT THAT USED' TRACKED ONTO PAVEMENT SHALL BE REMOVED IMMEDIATELY BY SWEEPING, THE SEDIMENT COLLECTED BY SWEEPING SHALL BE
REMOVED OR STABILIZED ON SITE THE PAVEMENT SHALL NOT BE CLEANED BY WASHING DOWN THE STREET, EXCEPT WHEN SWEEPING IS INEFFECTIVE AND
THERE M A THREAT TO PUBLIC SAFETY. IF IT IS NECESSARY TO WASH THE STREETS, A SMALL SUMP MUST BE CONSTRUCTED. THE SEDIMENT WOULD THEN BB
WA,gm8D INTO THE SUMP WHEtRE 11 CAN BE CONTROLLED AND DISCKMGED APPROPRIATELY. WASH WRIER MUST 13E PUMPED BACK ONTO THE SITE AND
CANNOT DISCHARGE TO SYSTEMS TRIBUTARY TO SURFACE WATERS.
3,4- ANY QUARRY SPALLS THAT ARE LQQSENEP FRAM THE PAD AND END UP ON THE ROADWAY SHALL EW REMOVED IMMEDLgTELY.
3,5- IF VEHICLES ARE ENTERINQ CR EXITING THE SETE$ AT POINTS OTHER THAN THE CONSTRUCTIQH ENTRANCE(S), FENCING SHALL BE INSTALLED To CONTROL
TRAFFIC.
UNLESS OTNERWISf N01#4. imLAWFNU 1S Net TO SCALE (NTS;
4 STD. PLAN - � �, 5.10
� ti PUBLIC WORKS PPROVEO
DEPARTMENT STABILIZED CONSTRUCTION[ ENTRANCE GAZ 9/28/2018 1
rmswo-�>nm r::nc, oAtl
1. ANY SITE WITH EXPOSED SOILS DURING THE WET SEASON (OCTOBER
1 TO APRIL 30) SHALL BE SUBJECT TO THE SPECIAL PROVISIONS
BELOW. THESE SPECIAL PROVISIONS ARE REQUIRED IN ADDITION
TO THE STANDARD ESC COVER MEASURES. THESE PROVISIONS
INCLUDE COVERING ANY NEWLY SEEDED AREAS WITH MULCH AND
IDENTIFYING AND SEEDING AS MUCH DISTURBED AREA AS POSSIBLE
PRIOR TO SEPTEMBER 23 IN ORDER TO PROVIDE GRASS COVER FOR
THE WET SEASON.
2. THE ALLOWED TIME THAT A DISTURBED AREA CAN REMAIN UNWORKED
WITHOUT COVER MEASURES IS REDUCED TO TWO (2) DAYS, RATHER
THAN SEVEN (7) DAYS.
3. STOCKPILES AND STEEP CUT AND FILL SLOPES ARE TO BE
PROTECTED IF UNWORKED FOR MORE THAN 12 HOURS.
4. COVER MATERIALS (PLASTIC, MATTING, ETC.) SUFFICIENT TO
COVER ALL DISTURBED AREAS SHALL BE STOCKPILED ON SITE.
5. ALL AREAS THAT ARE TO BE UNWORKED DURING THE WET SEASON
SHALL BE SEEDED WITHIN ONE WEEK OF THE BEGINNING OF THE WET
SEASON.
6. MULCH IS REQUIRED TO PROTECT ALL SEEDED AREAS.
7. FIFTY LINEAR FEET OF SILT FENCE (AND THE NECESSARY STAKES)
PER ACRE OF DISTURBANCE MUST BE STOCKPILED ON SITE.
8. CONSTRUCTION ROAD AND PARKING LOT STABILIZATION ARE
REQUIRED FOR ALL SITES UNLESS THE SITE IS UNDERLAIN BY
COARSE -GRAINED SOIL.
BENCHMARKS:
FOUND 1.5" BRASS DISK WITH 2" BRASS DISK WITH PUNCH MARK
PUNCH MARK IN CASE AT UNION IN CASE AT THE INTERSECTION OF
AVENUE NORTHEAST AND NE 19TH NORTHEAST 19TH STREET AND
STREET, KNOWN AS CITY OF DUVALL, KNOWN AS CITY OF
RENTON CONTROL POINT #716 RENTON CONTROL POINT #1996
2
PER COR COMMENTS DATED 6/8/20
DC
6/10/20
1
PER COR COMMENTS DATED 10/31/19
DC
12/2/19
NO.
REVISION
BY
DATE
9. SEDIMENT RETENTION IS REQUIRED UNLESS NO OFFSITE DISCHARGE
IS ANTICIPATED FOR THE SPECIFIED DESIGN FLOW.
10. PROPERLY
INSTALLED SILT FENCING IS MANDATORY ALONG THE DOWNSLOPE OF
ALL DISTURBED AREAS OF THE SITE. PERIMETER PROTECTION
FILTERS RUNOFF AND REDUCES THE AMOUNT OF SEDIMENT THAT MAY
LAVE THE SITE.
11. SURFACE WATER CONTROLS ARE REQUIRED UNLESS NO OFFSITE
DISCHARGE IS ANTICIPATED FOR THE SPECIFIED DESIGN FLOW.
12. PHASING AND MORE CONSERVATIVE BMPS MUST BE EVALUATED FOR
CONSTRUCTION ACTIVITY NEAR SURFACE WATERS.
13. ANY RUNOFF GENERATED BY DEWATERING SHALL BE TREATED THROUGH
CONSTRUCTION OF A SEDIMENT TRAP WHEN THERE IS SUFFICIENT
SPACE OR BY RELEASING THE WATER TO A WELL -VEGETATED, GENTLY
SLOPING AREA. SINCE PUMPS ARE USED FOR DEWATERING, IT MAY
BE POSSIBLE TO PUMP THE SEDIMENT -LADEN WATER WELL AWAY FROM
THE SURFACE WATER SO THAT VEGETATION CAN BE MORE
EFFECTIVELY UTILIZED FOR TREATMENT. A STRAW BALE FILTER
SHALL BE PLACED AROUND THE DISCHARGE FROM THE DEWATERING
PUMP. IF THERE IS NOT SPACE FOR A SEDIMENT TRAP OR 25 FEET
OF SUITABLE VEGETATION, OTHER FILTRATION METHODS SHALL BE
REQUIRED.
14. THE FREQUENCY OF MAINTENANCE REVIEW SHOULD BE INCREASED
FROM WEEKLY TO DAILY WHERE WARRANTED.
SURVEYED:
TSL
DESIGNED:
DSC
DD
DRAWN:
DSC
DD
CHECKED:
DD
A P P R
APPROVED:
DD
SCALE:
VERTICAL, NAVD 1988
N/A HORIZONTAL, NAD 1983/1991
ONE INCH DATU M
AT FULL SCALE
IF NOT ONE INCH
SCALE ACCORDINGLY
JOINTS IN FILTER FABRIC SHALT. BE SPLICED AT
POSTS. USE STAPLES, WIRE RINGS, OR
EQUIVALENT TO ATTACH FABRIC TO POSTS
2-.F 14 GAUGE WIRE, OR
EQUIVALENT, IF STANDARD
STRENGTH FABRICUSEP {
FILTER FABRIC III 2 MIN,
5' NL4lC. - I I
POST SPACING MAY BE INCREASED I 12' MIN.
TO8' IF WIRE BACKING IS USED I I 4'x4' MIN, TRENCH I
;ul BACKFILLTRENCH WITH NATIVE SOIL Li
OR 3W TO 9.lW WASHED GRAVEL
2'XA' WOOD POSTS, STEEL FENCE POSTS, OR EQUIVALENT (TYP.)
NOTE:
CONTRACTOR SHALL USE BRIGHT ORANGE
SILT FENCE IN ALL LOCATIONS.
NOTES:
1. CONDITIONS OF USE
1.1- SILT FENCE MAY BE USED DOWNBLOPE OF ALL DISTURBED AREAS.
IZ SILT FENCE IS NOT INTENDED 70 TREAT CONCENTRATED FLOWS. NOR IS IT INTENDED TO TREAT SUBSTANTIAL AMOUNTS OF OVERLAND FLOW, ANY CONCENTRATED
FLOW MUST BE CONVEYED THROUGH THE DRAINAGE SYSTEM TO A SEDIMENT TRAP OR PCN D.
Z DESIGN AND INSTALLATION SPEQRCATKMS
2.1. THE GEOTEXTILE USED MUST MEET THE_ STANDARD LISTED BELLOW. A COPY OF THE MANUFACTURER'S FABRIC SPECIFICATIONS MUST BE AVAILABLE ON SITE.
ADS (ASTM L74751I
30400 $1EVI= $I2E 18.E59-8.15mm1 FQR $ILT FILM
50-F00 SIEVE SIZE 14.30-4,15mmj FQR OTHER FABRICS
WATER PERMTTRVFTY(ASTM D4491)
OD2SECa1MINiMUM
GRAB TENSILE STRENGTH (ASTM Q46321
160 USE.. MIN. FOR EXTRA STRENGTH FABRIC
10D LB.S. MIN. FOR STANDARD STRENGTH FABRIC
GRAB TENSILE ELONGATION (ASTM 3952)
30%MAX. (WOVEN}
ULTRAVIOLET RESISTANCE (ASTM D4S55)
70% MIN.
2.2. STANDARD STRENGTH FABRIC REQUIRES WIRE BACKING TO INCREASE THE STRENGTH OF THE FENCE WIRE BACKING OR CLOSER POST SPACING MAY BE REQUIRED
FOR EXTRA STRENGTH FABRIC IF FIELD PERFORMANCE WARRANTS A STRONGER FENCE
2.3. WHERE THE FENCE IS FN$TALLEC, THE SLOPE SHALL NOT BE STIFFER THAN 2H:1V
2.4. IF A TYPICAL SILT FENCE IS USED, THE STANDARD 4'X4" TRENCH MAY BE REDUCED AS LONG AS THE BOTTOM 81NCHES OF THE SILT FENCE FABRIC 15 WELL BURIED AND
SECURE IN A TRENCH THAT STABILIZES THE FENCE AND DOES NM ALLOW WATER TO BYPASS OR UNDERMINE THE SILT FENCE.
25. FILTER FABRIC FENCES SHALL BE INSTALLED ALONG CDNTOURS WHENEVER POSSIBLE
3. MAINTENANCE STANDARDS
3.1. ANY DAMAGE SHALL SE REPAIRED IMMEDIATELY.
3.2. IF CONCENTRATED FLOWS ARE EVIDBNT UPHILL OF THE FENCE, THEY MUST BE INTERCEPTED AND CONVEYED TO A SEDIMENT TRAP OR POND.
5.3. 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
CHANNE LIZATIQN OF FLAW$ PRRALI.FL TO THE FENCS. IF THIS OCCUR$, R£PLAC F THE FENCE QR REMOVE THE TRAPPED SEDIMENT
3A. SEDIMENT MUST BE REMOVED WHEN SEDIMENT IS 6 INCHES HIGH.
3.5. IF THE FILTER FABRIC (GEOTEXTILE) HAS DETERIORATEO DUE TO ULTRAVIOLET BREAKDOWN, rT SHALL BE REPLACED
UNLESS OTHERWISE NUTEO, DRAWING IS NdT TO SCALE (NTS)
STD. PLAN - 214.00
a� PUBLIC WORKS SILT FENCE om 912812019 1
"-IN DEPARTMENT 1p GAZ
.vo-x wur mmmxraln RATE
FILTER FABRIC FENCE INSTALLATION NOTES:
1. THE FILTER FABRIC SHALL BE PURCHASED IN A CONTINUOUS ROLL CUT TO THE
LENGTH OF THE BARRIER TO AVOID USE OF JOINTS. WHEN JOINTS ARE NECESSARY,
FILTER CLOTH SHALL BE SPLICED TOGETHER ONLY AT A SUPPORT POST, WITH A
MINIMUM 6-INCH OVERLAP, AND BOTH ENDS SECURELY FASTENED TO THE POST
2. THE FILTER FABRIC FENCE SHALL BE INSTALLED TO FOLLOW THE CONTOURS (WHERE
FEASIBLE). THE FENCE POSTS SHALL BE SPACED A MAXIMUM OF 6 FEET APART AND
DRIVEN SECURELY INTO THE GROUND (MINIMUM OF 30 INCHES)
3. A TRENCH SHALL BE EXCAVATED, ROUGHLY 8 INCHES WIDE AND 12 INCHES DEEP,
UPSLOPE AND ADJACENT TO THE WOOD POST TO ALLOW THE FILTER FABRIC TO BE
BURIED
4. WHEN STANDARD STRENGTH FILTER FABRIC IS USED, A WIRE MESH SUPPORT FENCE
SHALL BE FASTENED SECURELY TO THE UPSLOPE SIDE OF THE POSTS USING HEAVY
DUTY WIRE STAPLES AT LEAST 1 INCH LONG, TIE WIRES OR HOG RINGS. THE WIRE
SHALL EXTEND INTO THE TRENCH A MINIMUM OF 4 INCHES AND SHALL NOT EXTEND
MORE THAN 36 INCHES ABOVE THE ORIGINAL GROUND SURFACE
5. THE STANDARD STRENGTH FILTER FABRIC SHALL BE STAPLED OR WIRED TO THE
FENCE, AND 20 INCHES OF THE FABRIC SHALL BE EXTENDED INTO THE TRENCH.
THE FABRIC SHALL NOT EXTEND MORE THAN 36 INCHES ABOVE THE ORIGINAL
GROUND SURFACE. FILTER FABRIC SHALL NOT BE STAPLED TO EXISTING TREES
6. WHEN EXTRA STRENGTH FILTER FABRIC AND CLOSE POST SPACING ARE USED, THE
WIRE MESH SUPPORT FENCE MAY BE ELIMINATED. IN SUCH A CASE, THE FILTER
FABRIC IS STAPLED OR WIRED DIRECTLY TO THE POSTS WITH ALL OTHER PROVISIONS
OF STANDARD NOTE 5 APPLYING
7. THE TRENCH SHALL BE BACKFILLED WITH 3/4-INCH MINIMUM DIAMETER WASHED
GRAVEL
8. FILTER FABRIC FENCES SHALL BE REMOVED WHEN THEY HAVE SERVED THEIR USEFUL
PURPOSE, BUT NOT BEFORE THE UPSLOPE AREA HAS BEEN PERMANENTLY STABILIZED
9. FILTER FABRIC FENCES SHALL BE INSPECTED IMMEDIATELY AFTER EACH RAINFALL AND
AT LEAST DAILY DURING PROLONGED RAINFALL. ANY REQUIRED REPAIRS SHALL BE
MADE IMMEDIATELY
CITY OF
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TESC NOTES AND DETAILS
DATE:
6/18/19
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DALPAY SHORT PLAT
FIELDBOOK:
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