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Home My WebLink AboutR-43782500 C'0 i O i 0 w V i a r C c C RUNOFF WATER WITH SEDIMENT 18" MIN FILTER FABRIC ON TOP OF GRATE WASHED ROCK 3/4" TO 3" (12" MIN. DEPTH) 0 0 - �0 0 " WIRE MESH OR SEDIMENT / \ HARDWARE CLOTH ' UNDER FILTER FABRIC �\ AND EXTEND 12" EX -END FILTER BEYOND GRATE IN ALL FABRIC 6" DIRECTIONS BEYOND GRATE FILTERED C.B. I N LET WATER MAINTENANCE STANDARDS 1. ANY ACCUMULATED SEDIMENT ON OR AROUND THE FILTER FABRIC PROTECTION SHALL BE REMOVED IMMEDIATELY. SEDIMENT SHALL NOT BE REMOVED WITH WATER, AND ALL SEDIMENT MUST BE DISPOSED OF AS FILL ON SITE OR HAULED OFF SITE. 2. 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 AS LEAST MONTHLY. 3. REGULAR MAINTENANCE IS CRITICAL FOR BOTH FORMS OF CATCH BASIN PROTECTION. UNLIKE MANY FORMS OF OF PROTECTION THAT FAIL GRADUALLY, CATCH BASIN PROTECTION WILL FAIL SUDDENLY AND COMPLETELY IF NOT MAINTAINED PROPERLY. TEMPORARY SEDIMENT CONTROL INLET GRAVEL AND FILTER FABRIC N.T.S. �rnoirc L = THE DISTANCE SUCH THAT POINTS A & B ARE 2 OF EQUAL ELEVATION 00000 2 fi-� o o� o -I 1 2" TO 4" QUARRY SPALLS fi-1Tl=1 I f=il i- iT1Tl� L A SPACING BETWEEN -r- {7 1=III-I 1 �� 2� j o 1' 4$0 TO 6 CHECK DAMS T1111' o o ° o MIN. o I-- _ITI-1 i �- MAINTENANCE STANDARDS 1. ANY SEDIMENT DEPOSITION OF MORE THAN 0.5 FEET SHALL BE REMOVED SO THAT THE CHANNEL IS RESTORED TO ITS DESIGN CAPACITY. 2. IF THE CHANNEL CAPACITY IS INSUFFIECIENT FOR THE DESIGN FLOW, IT MUST BE DETERMINED WHETHER THE PROBLEM IS LOCAL ( E.G., A CONSTRICTION OR BEND OR THE CHANNEL IS UNDER -DESIGNED. IF THE PROBLEM IS LOCAL, THE CHANNEL CAPACITY MUST BE INCREASED THROUGH CONSTRUCTION OF A BERM(S) OR BY EXCAVATION. IF THE PROBLEM IS UNDER -DESIGN, THE DESIGN ENGINEER SHALL BE NOTIFIED AND THE CHANNEL REDESIGNED TO A MORE CONSERVATIVE STANDARD TO BE APPROVED BY KING COUNTY. 3. THE CHANNEL SHALL BE EXAMINED FOR SIGNS OF SCOURING AND EROSION OF THE BED AND BANKS. IF SCOURING OR EROSION HAS OCCURED, AFFECTED AREAS SHALL BE PROTECTED BY RIPRAP OR AN EROSION CONTROL BLANKET OR NET. ROCK CHECK DAMS N.T.S. R=25'MIN .-' v� O 12" MIN. DEPTH (6"MIN. FOR RESIDENTIAL SINGLE FAMILY LOTS) O 4" TO 8" QUARRY SPALLS (4" TO 6" FOR RESIDENTIAL SINGLE FAMILY LOTS) PROVIDE FULL WIDTH OF INGRESS/EGRESS AREA MAINTENANCE STANDARDS 1. QUARRY SPALLS (OR HOG FUEL) SHALL BE ADDED TO THE PAD IF THE PAD IS NO LONGER IN ACCORDANCE WITH THE SPECIFICATIONS. 2. IF THE ENTRANCE IS NOT PREVENTING SEDIIMENT 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 DIIMENSIONS 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. 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 STREET, THE CONSTRUCTION OF A SMALL SUMP SHALL BE CONSIDERED. THE SEDIMENT WOULD THEN BE WASHED INTO THE SUMP. 4. ANY QUARRY SPALLS THAT ARE LOOSENED FROM THE PAD AND END UP ON THE ROADWAY SHALL BE REMOVED IMI4DIATELY. 5. IF VEHICLES ARE ENTERING OR EXITING THE SITE AT POINTS OTHER THAN THE CONSTRUCTION ENTRANCE(S), FENCING (SEE SECTION D.4.1) SHALL BE INSTALLED TO CONTROL TRAFFIC. CONSTRUCTION ENTRANCE ROCK PAD N.T.S. SHEET FLOW PLAN SINGLE ROW OF BALES OF STRAW TO BE PLACED PRIOR TO THE START OF ROUGH GRADING KEY BALE 4" MIN. DEPTH INTO NATIVE SOIL FILTERED RUNOFF -> (^I SEDIMENT LADEN RUNOFF COMPACTED SOIL TO PREVENT SLIPPING/PIPING CROSS-SECTION OF A PROPERLY INSTALLED STRAW BALE STRAW AND HAY BALE BARRIERS N.T.S. 0 I N FILTER FABRIC MATERIAL IN CONTINUOUS ROLLS USE STAPLES OR WIRE RINGS TO ATTACH FABRIC TO WIRE WIRE MESH SUPPORT FENCE / FOR FILTER FABRIC BURY BOTTOM OF FILTER MATERIAL IN 8%12" TRENCH r------------------rr -- 6' MAX, i l II II II II I J LJ 2"x2" WOOD POSTS. STANDARD OR BETTER OR EQUIVALENT WIRE MESH. SUPPORT FENCE (TO BE LOCATED ON THE DOWNHILL SIDE OF THE FILTER FABRIC) cO FILTER FABRIC MATERIAL 4. I N n r�\ 000 0 °o PROVIDE WASHED GRAVEL BACKFILL, 3/4" - 3" IN 8 IN. TRENCH AND ON BOTH SIDES OF FILTER FENCE FABRIC ON �\ THE SURFACE SURFACE AREA DETERMINED 4' AT TOP OF WEIR 1' MIN. OVERFLOW EL=476.0 11 - -RIP RAP - o00000000 �y EL=474.0 1 MIN. o00000000 0 1' MIN. 1.5 MIN. FLAT BOTTOM EL=471.50 2"-4" ROCK � �- CONVEYANCE,DISCHARGE OOUTLET STABILIZED OR NOTE: TRAP MAY BE FORMED BY BERM OR BY LEVEL SPREADER PARTIAL OR COMPLETE EXCAVATION 3/4"-1.5" WASHED GRAVEL :::� GEOTEXTIILE CROSS-SECTON NTS 0 I 6' MIN. BURY BOTTOM OF FILTER MATERIAL IN 8"x12" TRENCH 2"x2"x5' WOOD POSTS. STANDARD OR BETTER OR EQUIVALENT MAINTENANCE v1ANDAR-0 1. ANY DAMAGE SHALL BE REPAIRED IMMEDIATELY. 2. IF CONCENTRATIED FLOWS ARE EVIDENT UPHILL OF THE FENCE, THEY MUST BE INTERCEPTED At4D CONVEYED TO A SEDIMENT TRAP OR POND. 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 A CHANNELIZATION OF FLOWS PARALLEL TO THE FENCE. IF THIS OCCURS, REPLACE THE FENCE OR REMOVE THE TRAPPED SEDIMENT. 4. SEDIMENT MUST BE RP4OVF-D WHEN THE SEDIMENT IS 6 INCHES HIGH. 5. IF THE FILTER FABRIC (CEOTEXTILE) HAS DETERIORATED DUE TO ULTRAVIOLET BREAKDOWN, IT SHALL BE REPLACED. FILTER FABhiC FENCE DETAIL N.T.S. 480 475 470 l 480 �. 475 470 1' MIN. DEPTH OVERFLOW SPILLWAY NATIVE SOIL OR �•;`; '�� '��• MIN. 1 DEPTH 2"-4" ROCK COMPACTED BACKFILL •�`• ':;;;? :_,: ��;•' ':•L�• 1 ./ GEOTEXTILE MIN. 1 DEPTH 3/41. -1.5 WASHED GRAVEL MAINTENANCE STANDARDS 1. SEDIMENT SHALL BE REMOVED FROM THE TRAP WHEN IT REACHES 1 FOOT IN DEPTH. 2. ANY DAMAGE TO THE TRAP EMBANKMENTS OR SLOPES SHALL BE REPAIRED. TRAP OUTLET NTS i ; - I - i_ I _ I - _ -_I _ - ��.._ li - ---lL.-_�.{�...- SECTION B-B �;=%QVI j - --� EXIS 7= QRO N 1 ' J JIB I I � SECTION A -A PROVIDE 3' WIDE BERM ® INTERCEPTOR SWALE 480 475 =1 MAINTENANCE STANDARDS 1. DAMAGE RESULTING FROM RUNOFF OR CONSTRUCTION ACTIVITY SHALL BE 470 REPAIRED IMMEDIATELY. 2. IF THE FACILITIES DO NOT REGULARY RETAIN STORM RUNOFF, THE CAPACITY AND/OR FREQUENCY OF THE DIKES/SWALES SHALL BE INCREASED. INTERCEPTOR SWALE N.T.S. UNG COUNTY D,D v. . 475 Project No. / �P�; O�je t 'lucre _ I BSI T E Fri' -TN =<E,�; tNG!D:�;A''' E PPRO DATE S .2G SfG%NE rR c 1ANNING AI?PI _ _OVAL DATE - _ - ._ _ _ . SIGNED 470 I.AN13sCA?'E/ O �TING/1,AP�ING DATE SIGNED SPECIAL CONDITIONS' Fi vhL CVRRECTED PLAN DATE: %-71 APPROVED: Ip KING COUNTY D.D.E.S. REVIEW ENGINEER SENIOR ENGINEER JAMES H. SANDERS, P.E. DEVELOPMENT ENGINEER COMMENTS: COMPLETION DATE COMPLETION DATE APPROVAL DATE DESIGNED JW DRAWN DP CHECKED DATE 8 17 01 SCALE NTS TIQ�[�D.UK� ENGINEERING, INC. ,w - boo �' q �w� "4 lsT ' 0� ONAL E 1'L OWNER/DEVELOPER: PDSK PROPERTIES, INC. 621 PACIFIC AVE., SUITE 300 TACOMA, WA. 98402 +F `" TITLE: TEMPORARY EROSION/SEDIMENTATION NOTES AND DETAILS BELGROVE AT RENTON KING COUNTY 10836 SE 190TH ST. WASHINGTON SHEET 10 of 10 �', ew �� (253)565-4491 • Seattle (206)824-1205 • FAX (253)565-8563 Land Planning & Use a Engineering . Surveying 1910-64th Avenue West, • Tacoma, WA 98466 JOB NO. i 01-065 EXPIRES: 05-24- 1 3/10/03 JW CSDP REVISION No. Date B A r. Revision R-437825