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NOTES:
1. CONDITIONS OF USE
1.1. PLASTIC COVERING MAY BE USED ON DISTURBED AREAS THAT REQUIRE COVER MEASURES FOR LESS THAN 30 DAYS.
1.2. PLASTIC IS PARTICULARLY USEFUL FOR PROTECTING CUT AND FILL SLOPES AND STOCKPILES.
1.3. CLEAR PLASTIC SHEETING MAY BE USED OVER NEWLY -SEEDED AREAS TO CREATE A GREENHOUSE EFFECT AND ENCOURAGE GRASS GROWTH.
CLEAR PLASTIC SHOULD NOT BE USED FOR THIS PURPOSE DURING THE SUMMER MONTHS.
1.4. THIS METHOD SHALL NOT BE USED UPSLOPE OF AREAS THAT MIGHT BE ADVERSELY IMPACTED BY RUNOFF. SUCH AREAS INCLUDE STEEP AND
UNSTABLE SLOPES.
2. DESIGN AND INSTALLATION SPECIFICATIONS
2.1. PLASTIC SHEETING SHOULD HAVE A MINIMUM THICKNESS OF 0.06 MILLIMETERS.
2.2. IF EROSION AT THE TOE OF A SLOPE IS LIKELY, A GRAVEL BERM, RIPRAP, OR OTHER SUITABLE PROTECTION SHALL BE INSTALLED AT THE TOE
OF THE SLOPE IN ORDER TO REDUCE THE VELOCITY OF RUNOFF.
2.3. TIRES, SAND BAGS, OR EQUIVALENT MAY BE USED TO WEIGHT PLASTIC.
2.4. SEAMS BETWEEN SHEETS MUST OVERLAP A MINIMUM OF 12 INCHES AND BE WEIGHTED OR TAPED.
3. MAINTENANCE STANDARDS
3.1. TORN SHEETS MUST BE REPLACED AND OPEN SEAMS REPAIRED.
3.2. IF THE PLASTIC BEGINS TO DETERIORATE DUE TO ULTRAVIOLET RADIATION, IT MUST BE COMPLETELY REMOVED AND REPLACED.
3.3. WHEN THE PLASTIC IS NO LONGER NEEDED, IT SHALL BE COMPLETELY REMOVED.
UNLESS OTHERWISE NOTED, DRAWING IS NOT TO SCALE (NTS)
STD. PLAN - 213.30
.• PUBLIC WORKS PRO
�V%DEPARTMENT PLASTIC COVERING GAZ 9/28/2018
G
Public Works Atlminirtrator DATE
PLASTIC COVERING
CONSTRUCTION SEQUENCE
1. SURVEY AND FLAG CLEARING LIMITS.
2. SCHEDULE AND ATTEND PRECONSTRUCTION MEETING WITH CITY OF RENTON.
3. PROVIDE MISC. DEMOLITION AND CLEAR AND GRUB AREA WITHIN CLEARING
LIMITS REQUIRED FOR INSTALLATION OF TEMPORARY EROSION CONTROL
FACILITIES. ALL EROSION AND SEDIMENT CONTROL FACILITIES SHOWN ON THE
EROSION CONTROL PLAN SHALL BE INSTALLED PRIOR TO, OR AS A FIRST STAGE
OF SITE PREPARATION.
4. PROVIDE CONSTRUCTION ENTRANCE, SILT FENCE, AND CATCH BASIN INLET
PROTECTION AS SHOWN ON SHEET C1.2.
5. THE CONTRACTOR SHALL INSPECT EROSION CONTROL MEASURES WEEKLY AND
PROVIDE REPAIRS AS NEEDED.
6. PROVIDE COVER MEASURES TO INCLUDE ARMORING, MULCHING AND
HYDROSEEDING TO STABILIZE DENUDED AREAS AND PREVENT THE TRANSPORT
OF SEDIMENT -LADEN STORMWATER OFF -SITE.
7. PROVIDE STORM SYSTEM, SANITARY SYSTEM, WATER AND MISCELLANEOUS
UTILITIES AS SHOWN ON THE PLANS. PROVIDE 6" VERTICAL AND 7' HORIZONTAL
CLEARANCE (OUTSIDE SURFACES) BETWEEN STORM DRAIN LINES AND OTHER
UTILITY PIPES AND CONDUITS.
8. PROVIDE CATCH BASIN SEDIMENT PROTECTION ON ALL CATCH BASINS.
9. FINE GRADE SITE AND PAVE. COORDINATE WITH THE CITY FOR REQUIRED
INSPECTIONS.
10. REMOVE SEDIMENT FROM STORM PIPES AND CATCH BASIN SUMPS.
11. STABILIZE ALL REMAINING DISTURBED AREAS.
12. COORDINATE WITH THE CITY OF RENTON FOR FINAL INSPECTION.
13. REMOVE REMAINING TEMPORARY EROSION CONTROL DEVICES WHEN AREA HAS
BEEN PERMANENTLY STABILIZED WITH VEGETATION AND REMOVAL IS
APPROVED BY THE CITY.
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2'X2" 14 GAUGE WIRE, OR
EQUIVALENT, IF STANDARD
STRENGTH FABRIC USED
FILTER FABRIC
2' MIN.
POST SPACING MAY BE INCREASED I 12" MIN.
TO IF WIRE BACKING IS USED I I 4"x4" MIN. TRENCH
8'
BACKFILL TRENCH WITH NATIVE SOIL
7
OR 3/4" TO 1-1/2" WASHED GRAVEL
2"x4" WOOD POSTS, STEEL FENCE POSTS, OR EQUIVALENT (TYP.)
NOTES:
1. CONDITIONS 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 IT INTENDED TO TREAT SUBSTANTIAL AMOUNTS OF OVERLAND FLOW. ANY CONCENTRATED
FLOW MUST BE CONVEYED THROUGH THE DRAINAGE SYSTEM TO A SEDIMENT TRAP OR POND.
2. DESIGN AND INSTALLATION SPECIFICATIONS
2.1. THE GEOTEXTILE USED MUST MEET THE STANDARD LISTED BELLOW. A COPY OF THE MANUFACTURER'S FABRIC SPECIFICATIONS MUST BE AVAILABLE ON SITE.
AOS (ASTM D4751)
30-100 SIEVE SIZE (0.60-0.15mm) FOR SILT FILM
50-100 SIEVE SIZE (0.30-0.15mm) FOR OTHER FABRICS
WATER PERMITTIVITY (ASTM D4491)
0.02 SEC' MINIMUM
GRAB TENSILE STRENGTH (ASTM D4632)
180 LBS. MIN. FOR EXTRA STRENGTH FABRIC
100 LBS. MIN. FOR STANDARD STRENGTH FABRIC
GRAB TENSILE ELONGATION (ASTM D4632)
30 % MAX. (WOVEN)
ULTRAVIOLET RESISTANCE (ASTM D4355)
70'h 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 2H:1V
2.4. IF A TYPICAL SILT FENCE IS USED, THE STANDARD 4"X4" TRENCH MAY BE REDUCED AS LONG AS THE BOTTOM 8 INCHES OF THE SILT FENCE FABRIC IS WELL BURIED AND
SECURE IN A TRENCH THAT STABILIZES THE FENCE AND DOES NOT ALLOW WATER TO BYPASS OR UNDERMINE THE SILT FENCE.
2.5. FILTER FABRIC FENCES SHALL BE INSTALLED ALONG CONTOURS WHENEVER POSSIBLE.
3. MAINTENANCE STANDARDS
3.1. ANY DAMAGE SHALL BE REPAIRED IMMEDIATELY.
3.2. IF CONCENTRATED FLOWS ARE EVIDENT UPHILL OF 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 PARALLEL TO THE FENCE. IF THIS OCCURS, REPLACE THE FENCE OR REMOVE THE TRAPPED SEDIMENT.
3.4. SEDIMENT MUST 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.
UNLESS OTHERWISE NOTED, DRAWING IS NOTTO SCALE (NTS)
PUBLIC WORKS o
STD. PLAN - 214.00
DO)
PR DEPARTMENT SILT FENCE GAZ 9/28/2018
PUFdic Works Adminishatm DATE
SILT FENCE
R = 25' MIN.
INSTALL DRIVEWAY CULVERT
IF THERE IS A ROADSIDE
DITCH PRESENT, AS PER CITY
ROAD STANDARDS
EX1SA\N6
R0P0
4"-8" QUARRY SPALLS
GEOTEXTILE
12" MIN. THICKNESS
CONSTRUCTION ENTRANCE NOTES:
/S.
1. DRIVEWAYS SHALL BE PAVED TO
THE EDGE OF THE RIGHT-OF-WAY
PRIOR TO INSTALLATION OF THE
CONSTRUCTION ENTRANCE TO
AVOID DAMAGING OF THE
ROADWAY.
\
2. IT IS RECOMMENDED THAT THE
ENTRANCE BE CROWNED SO THAT
RUNOFF DRAINS OFF THE PAD
100' MIN.
15MIN.
PROVIDE FULL WIDTH OF
INGRESS/EGRESS AREA
NOTES:
1. CONDITION OF USE
1.1. CONSTRUCTION ENTRANCE SHALL 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.
1.2. FOR RESIDENTIAL CONSTRUCTION PROVIDE STABILIZED CONSTRUCTION ENTRANCES FOR EACH RESIDENCE IN ADDITION TO THE MAIN SUBDIVISION
ENTRANCE. STABILIZED SURFACES SHALL BE OF SUFFICIENT LENGTHNVIDTH TO PROVIDE VEHICLE ACCESS/PARKING, BASED ON LOT SIZEICONFIGURATION.
2. DESIGN AND INSTALLATION SPECIFICATIONS
2.1. A SEPARATION GEOTEXTILE SHALL BE PLACED UNDER THE SPALLS TO PREVENT FINE SEDIMENT FROM PUMPING UP INTO THE ROCK PAD. THE GEOTEXTILE
SHALL MEET THE FOLLOWING STANDARDS:
GRAB TENSILE STRENGTH (ASTM D4632)
200 LBS. MIN.
GRAB TENSILE ELONGATION (ASTM D4632)
30% MAX. (WOVEN)
CBR PUNCTURE STRENGTH (ASTM D6241)
495 LBS. MIN.
AOS (ASTM D4751)
20-45 (U.S. STANDARD SIEVE SIZE)
2.2. DO NOT USE CRUSHED CONCRETE, CEMENT, OR CALCIUM CHLORIDE FOR CONSTRUCTION ENTRANCE STABILIZATION BECAUSE THESE PRODUCTS RAISE pH
LEVELS IN STORMWATER AND CONCRETE DISCHARGE TO SURFACE WATERS OF THE STATE IS PROHIBITED.
2.3. HOG FUEL (WOOD BASED MULCH) MAY BE SUBSTITUTED FOR OR COMBINED WITH QUARRY SPALLS IN AREAS THAT WILL NOT BE USED FOR PERMANENT ROADS.
HOG FUEL IS NOT RECOMMENDED FOR ENTRANCE STABILIZATION IN URBAN AREAS. THE INSPECTOR MAY AT ANY TIME REQUIRE THE USE OF QUARRY SPALLS
IF THE HOG FUEL IS NOT PREVENTING SEDIMENT FROM BEING TRACKED ONTO PAVEMENT OR IF THE HOG FUEL IS BEING CARRIED ONTO PAVEMENT.
2.4. FENCING SHALL BE INSTALLED AS NECESSARY TO RESTRICT TRAFFIC TO THE CONSTRUCTION ENTRANCE.
2.5. WHENEVER POSSIBLE, THE ENTRANCE SHALL BE CONSTRUCTED ON A FIRM, COMPACTED SUBGRADE. THIS CAN SUBSTANTIALLY INCREASE THE
EFFECTIVENESS OF THE PAD AND REDUCE THE NEED FOR MAINTENANCE.
3. MAINTENANCE STANDARDS
3.1. QUARRY SPALLS SHALL BE ADDED IF THE PAD IS NO LONGER IN ACCORDANCE WITH THE SPECIFICATIONS.
3.2. IF THE ENTRANCE IS NOT PREVENTING SEDIMENT FROM BEING TRACKED ONTO PAVEMENT, THEN ALTERNATIVE MEASURES TO KEEP THE STREETS FREE OF
SEDIMENT SHALL BE USED. THIS MAY INCLUDE STREET SWEEPING, AN INCREASE IN THE DIMENSIONS OF THE ENTRANCE, OR THE INSTALLATION OF A WHEEL
WASH. IF WASHING IS USED, IT SHALL BE DONE ON AN AREA COVERED WITH CRUSHED ROCK, AND WASH WATER SHALL DRAIN TO A SEDIMENT TRAP OR POND.
3.3. ANY SEDIMENT THAT IS 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 IS A THREAT TO PUBLIC SAFETY. IF IT IS NECESSARY TO WASH THE STREETS, A SMALL SUMP MUST BE CONSTRUCTED. THE SEDIMENT WOULD THEN BE
WASHED INTO THE SUMP WHERE IT CAN BE CONTROLLED AND DISCHARGED APPROPRIATELY. WASH WATER MUST BE PUMPED BACK ONTO THE SITE AND
CANNOT DISCHARGE TO SYSTEMS TRIBUTARY TO SURFACE WATERS.
3.4. ANY QUARRY SPALLS THAT ARE LOOSENED FROM THE PAD AND END UP ON THE ROADWAY SHALL BE REMOVED IMMEDIATELY.
3.5. IF VEHICLES ARE ENTERING OR EXITING THE SITES AT POINTS OTHER THAN THE CONSTRUCTION ENTRANCE(S), FENCING SHALL BE INSTALLED TO CONTROL
TRAFFIC.
UNLESS OTHERWISE NOTED, DRAWING 15 NOT TO SCALE (NTS)
STD. PLAN - 215.10
PRIPUBLIC WORKS APPROVED
DEPARTMENT STABILIZED CONSTRUCTION ENTRANCE GAZ 9/28/2018 1
P"wmw AdAdmm DATE
STABILIZED CONSTRUCTION ENTRANCE
EROSION CONTROL (ESC) STANDARD PLAN NOTES (PER COR STD 268.00
1. BEFORE ANY CONSTRUCTION OR DEVELOPMENT ACTIVITY OCCURS,
A PRE -CONSTRUCTION MEETING SHALL BE HELD AMONG THE CITY
OF RENTON, HEREBY REFERRED TO AS THE CITY, THE APPLICANT,
AND THE APPLICANT'S CONTRACTOR.
2. THE APPLICANT IS RESPONSIBLE FOR OBTAINING THE WASHINGTON
STATE DEPARTMENT OF ECOLOGY (ECOLOGY) CONSTRUCTION
STORMWATER GENERAL PERMIT, IF IT IS REQUIRED FOR THE
PROJECT. THE APPLICANT SHALL PROVIDE THE CITY COPIES OF ALL
MONITORING REPORTS PROVIDED TO ECOLOGY ASSOCIATED WITH
THE CONSTRUCTION STORMWATER GENERAL PERMIT.
3. THE ESC PLAN SET SHALL INCLUDE AN ESC CONSTRUCTION
SEQUENCE DETAILING THE ORDERED STEPS THAT SHALL BE
FOLLOWED FROM THE PRE -CONSTRUCTION MEETING TO
POST -PROJECT CLEANUP IN ORDER TO FULFILL PROJECT ESC
REQUIREMENTS.
4. THE BOUNDARIES OF THE CLEARING LIMITS, SENSITIVE AREAS AND
THEIR BUFFERS, AND AREAS OF VEGETATION PRESERVATION AND
TREE RETENTION, AS PRESCRIBED ON THE PLAN(S), SHALL BE
CLEARLY FLAGGED BY SURVEY TAPE OR FENCING AND PROTECTED
IN THE FIELD IN ACCORDANCE WITH APPENDIX D OF THE CITY OF
RENTON SURFACE WATER DESIGN MANUAL (RSWDM) PRIOR TO
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.
5. STABILIZED CONSTRUCTION ENTRANCES SHALL BE INSTALLED AT
THE BEGINNING OF CONSTRUCTION AND MAINTAINED FOR THE
DURATION OF THE PROJECT. ADDITIONAL MEASURES, SUCH AS
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 FOR
THE DURATION OF THE PROJECT. IF SEDIMENT IS TRACKED
OFFSITE, PUBLIC ROADS SHALL BE CLEANED THOROUGHLY AT THE
END OF EACH DAY, OR MORE FREQUENTLY DURING WET WEATHER,
AS NECESSARY TO PREVENT SEDIMENT FROM ENTERING WATERS
OF THE STATE.
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SPOKANE TRI-CITIES
2215 North 30th Street, Suite 300 Tacoma, WA 98403
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253.383.2422 TEL 253.383.2572 FAX www.ahbl.com WEB
05/15/2026
6. WASHOUT FROM CONCRETE TRUCKS SHALL BE PERFORMED
OFF -SITE OR IN DESIGNATED CONCRETE WASHOUT AREAS ONLY.
DO NOT WASH OUT CONCRETE TRUCKS ONTO THE GROUND, OR TO
STORM DRAINS OR OPEN DITCHES. ON -SITE DUMPING OF EXCESS
CONCRETE SHALL ONLY OCCUR IN DESIGNATED CONCRETE
WASHOUT AREAS.
7. ALL REQUIRED ESC BMPS SHALL 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 ESC BMPS
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. ALL ESC BMPS
SHALL BE REMOVED AFTER CONSTRUCTION IS COMPLETED AND
THE SITE HAS BEEN STABILIZED TO ENSURE POTENTIAL FOR
ON -SITE EROSION DOES NOT EXIST. THE IMPLEMENTATION,
MAINTENANCE, REPLACEMENT, ENHANCEMENT, AND REMOVAL OF
ESC BMPS SHALL BE THE RESPONSIBILITY OF THE APPLICANT.
8. ANY HAZARDOUS MATERIALS OR LIQUID PRODUCTS THAT HAVE THE
POTENTIAL TO POLLUTE RUNOFF SHALL BE DISPOSED OF
PROPERLY.
9. THE ESC BMPS DEPICTED ON THIS DRAWING ARE INTENDED TO BE
MINIMUM REQUIREMENTS TO MEET ANTICIPATED SITE CONDITIONS.
AS CONSTRUCTION PROGRESSES AND UNEXPECTED OR SEASONAL
CONDITIONS DICTATE, THE APPLICANT SHALL ANTICIPATE THAT
MORE ESC BMPS WILL BE NECESSARY TO ENSURE COMPLETE
SILTATION CONTROL ON THE PROPOSED SITE. DURING THE
COURSE OF CONSTRUCTION, IT SHALL BE THE OBLIGATION AND
RESPONSIBILITY OF THE APPLICANT TO ADDRESS ANY NEW
CONDITIONS THAT MAY BE CREATED BY THE ACTIVITIES AND TO
PROVIDE ADDITIONAL ESC BMPS, OVER AND ABOVE MINIMUM
REQUIREMENTS, AS MAY BE NEEDED, TO PROTECT ADJACENT
PROPERTIES AND WATER QUALITY OF THE RECEIVING DRAINAGE
SYSTEM.
10. APPROVAL OF THIS PLAN IS FOR ESC ONLY. IT DOES NOT
CONSTITUTE AN APPROVAL OF STORM DRAINAGE DESIGN, SIZE
NOR LOCATION OF PIPES, RESTRICTORS, CHANNELS, OR
STORMWATER FACILITIES.
11. ANY DEWATERING SYSTEM NECESSARY FOR THE CONSTRUCTION
OF STORMWATER FACILITIES SHALL BE SUBMITTED TO THE CITY
FOR REVIEW AND APPROVAL.
12. ANY AREAS OF EXPOSED SOILS, INCLUDING ROADWAY
EMBANKMENTS, THAT WILL NOT BE DISTURBED FOR TWO DAYS
DURING THE WET SEASON (OCTOBER 1ST THROUGH APRIL 30TH)
OR SEVEN DAYS DURING THE DRY SEASON (MAY 1ST THROUGH
SEPTEMBER 30TH) SHALL BE IMMEDIATELY STABILIZED WITH THE
APPROVED ESC COVER METHODS (E.G., SEEDING, MULCHING,
PLASTIC COVERING, ETC.) IN CONFORMANCE WITH APPENDIX D OF
THE RSWDM.
13. WET SEASON ESC REQUIREMENTS APPLY TO ALL CONSTRUCTION
SITES BETWEEN OCTOBER 1ST AND APRIL 30TH, UNLESS
OTHERWISE APPROVED BY THE CITY.
14. ANY AREA NEEDING ADDITIONAL ESC MEASURES, NOT REQUIRING
IMMEDIATE ATTENTION, SHALL BE ADDRESSED WITHIN SEVEN (7)
DAYS.
15. THE ESC BMPS ON INACTIVE SITES SHALL BE INSPECTED AND
MAINTAINED AT A MINIMUM OF ONCE A MONTH OR WITHIN 24 HOURS
FOLLOWING A STORM EVENT. INSPECTION AND MAINTENANCE
SHALL OCCUR MORE FREQUENTLY AS REQUIRED BY THE CITY.
16. BEFORE COMMENCEMENT OF ANY CONSTRUCTION ACTIVITY,
CATCH BASIN INSERTS PER THE CITY STANDARD PLANS SHALL BE
PROVIDED FOR ALL STORM DRAIN INLETS DOWNSLOPE AND WITHIN
500 FEET OF A DISTURBED OR CONSTRUCTION AREA, UNLESS THE
RUNOFF THAT ENTERS THE INLET WILL BE CONVEYED TO A
SEDIMENT POND OR TRAP. ALL CATCH BASIN INSERTS SHALL BE
PERIODICALLY INSPECTED AND REPLACED AS NECESSARY TO
ENSURE FULLY FUNCTIONING CONDITION.
17. AT NO TIME SHALL SEDIMENT ACCUMULATION EXCEED 2/3 OF THE
CAPACITY OF THE CATCH BASIN SUMP. 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.
18. ANY PERMANENT STORMWATER FACILITY USED AS A TEMPORARY
SETTLING BASIN SHALL BE MODIFIED WITH THE NECESSARY ESC
BMPS AND SHALL PROVIDE ADEQUATE STORAGE CAPACITY. IF THE
PERMANENT FACILITY IS TO FUNCTION ULTIMATELY AS AN
INFILTRATION SYSTEM, THE TEMPORARY FACILITY SHALL BE ROUGH
GRADED SO THAT THE BOTTOM AND SIDES ARE AT LEAST THREE
FEET ABOVE THE FINAL GRADE OF THE PERMANENT FACILITY.
5" MAX.
DRAINAGE GRATE TRIM
GRATE FRAME _
C- OVERFLOW BYPASS
d '
BELOW INLET GRATE DEVICE
SEDIMENT AND DEBRIS
d
FILTERED
WATER
SECTION VIEW
DRAINAGE GRATE
(RECTANGULAR GRATE SHOWN) RETRIEVAL SYSTEM (TYP.)
� U
OVERFLOW BYPASS (TYP.)
BELOW INLET GRATE DEVICE
ISOMETRIC VIEW
NOTES:
1. PROTECTION SHALL BE PROVIDED FOR ALL STORM DRAIN INLETS DOWNSLOPE AND WITHIN 500 FEET OF A DISTURBED OR
CONSTRUCTION AREA, UNLESS THE RUNOFF THAT ENTERS THE CATCH BASIN WILL BE CONVEYED TO A SEDIMENT POND OR TRAP.
2. INLET PROTECTION SHALL BE USED TO PROTECT THE DRAINAGE SYSTEM.
3. THE CONTRIBUTING DRAINAGE AREA MUST NOT BE LARGER THAN ONE ACRE.
4. SIZE THE BELOW INLET GRATE DEVICE (BIGD) FOR THE STORMWATER STRUCTURE IT WILL SERVICE.
5. THE BIGD SHALL HAVE A BUILT-IN HIGH -FLOW RELIEF SYSTEM (OVERFLOW BYPASS).
6. THE RETRIEVAL SYSTEM MUST ALLOW REMOVAL OF THE BIGD WITHOUT SPILLING THE COLLECTED MATERIAL.
7. PERFORM MAINTENANCE IN ACCORDANCE WITH STANDARD SPECIFICATION 8-01.3(15).
8. ANY SEDIMENT IN THE CATCH BASIN INSERT SHALL BE REMOVED WHEN THE SEDIMENT HAS FILLED ONE-THIRD OF THE AVAILABLE
STORAGE. THE FILTER MEDIA FOR THE INSERT SHALL BE CLEANED OR REPLACED AT LEAST MONTHLY.
UNLESS OTHERWISE NOTED, DRAWING IS NOT TO SCALE (NTS)
STD. PLAN - 216.30
IL PUBLIC WORKS APPR ED:
DEPARTMENT CATCH BASIN INSERT GAZ 9/28/2018 1
P"bbw W",k: ndmmi:t,am, DATE
CATCH BASIN INSERT
19. AREAS DESIGNATED ON THE PLAN(S) CONTAINING EXISTING
STORMWATER FACILITIES OR ON -SITE BMPS (AMENDED SOILS,
BIORETENTION, PERMEABLE PAVEMENT, ETC.) SHALL BE CLEARLY
FENCED AND PROTECTED USING ESC BMPS TO AVOID
SEDIMENTATION AND COMPACTION DURING CONSTRUCTION.
20. PRIOR TO THE BEGINNING OF THE WET SEASON (OCTOBER 1ST),
ALL DISTURBED AREAS SHALL BE INSPECTED TO IDENTIFY WHICH
ONES SHALL BE SODDED OR SEEDED IN PREPARATION FOR THE
WINTER RAINS. DISTURBED AREAS SHALL BE SODDED OR SEEDED
WITHIN ONE WEEK OF THE BEGINNING OF THE WET SEASON. AN
EXHIBIT OF THOSE AREAS TO BE SODDED OR SEEDED AND THOSE
AREAS TO REMAIN UNCOVERED SHALL BE SUBMITTED TO THE CITY
FOR REVIEW.
21. PRIOR TO FINAL CONSTRUCTION ACCEPTANCE, THE PROJECT SITE
SHALL BE STABILIZED TO PREVENT SEDIMENT -LADEN WATER FROM
LEAVING THE PROJECT SITE, ALL ESC BMPS SHALL BE REMOVED,
AND STORMWATER CONVEYANCE SYSTEMS, FACILITIES, AND
ON -SITE BMPS SHALL BE RESTORED TO THEIR FULLY FUNCTIONING
CONDITION. ALL DISTURBED AREAS OF THE PROJECT SITE SHALL BE
VEGETATED OR OTHERWISE PERMANENTLY STABILIZED. AT A
MINIMUM, DISTURBED AREAS SHALL BE SODDED OR SEEDED AND
MULCHED TO ENSURE THAT SUFFICIENT COVER WILL DEVELOP
SHORTLY AFTER FINAL APPROVAL. MULCH WITHOUT SEEDING IS
ADEQUATE FOR SMALL AREAS TO BE LANDSCAPED BEFORE
OCTOBER 1 ST.
22. ROCKERIES ARE CONSIDERED TO BE A METHOD OF BANK
STABILIZATION AND EROSION CONTROL. ROCKERIES SHALL NOT BE
CONSTRUCTED TO SERVE AS RETAINING WALLS. ALL ROCKERIES IN
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.
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R-438817