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Home My WebLink AboutR-404514REVISIONS 0 W 0 m OIE- cV Y T I m 0 0 as 0 0 0 i �1E ma 0 � U W N 0 �o co � N E" w-t iv o 1z ii FILTER FABRIC MATERIAL 60" WIDE ROLLS. USE STAPLES OR WIRE RINGS TO ATTACH FABRIC TO WIRE 2" BY 2" BY 14 GA. WIRE FABRIC OR EQUIV. g " BURY BOTTOM OF FILTER —° `- MATERIAL IN 8" - 6' MAX. BY 12" TRENCH �- 2" BY 4' WOOD POSTS, STANDARD OR BETTER OR EQUAL ALTERNATE: STEEL FENCE POSTS. 2" x4' WOOD POSTS, STANDARD BETTER OR EQUAL ALTERNATE: STEEL FENCE POSTS 6" -- PROVIDE 3/4"-1.5" FILTER FABRIC MATERIAL - -y- WASHED GRAVEL BACKFILL IN TRENCH 2" BY 2" BY 14 GA. WIRE - I AND ON BOTH SIDES FABRIC OR EQUIV. FLOW o, N OF FILTER FABRIC ,°•; a: 0 ° '0 °°° 1. ON THE SURFACE NEWLY GRADED OR DISTURBI-D I N SIDE SLOPE 8" 1. ANY DAMAGE SHALL BE REPAIRED IMMEDIATELY. 2. IF CONCENTRATED FLOWS ARE EVIDENT UPHILL OF THE FENCE, THEY MUST BE INTERCEPTED AND 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 CHANNELIZATION OF FLOWS PARALLEL TO THE FENCE. IF THIS OCCURS, REPLACE THE FENCE AND/OR REMOVE THE TRAPPED SEDIMENT. 4. SEDIMENT MUST BE !REMOVED WHEN THE SEDIMENT IS 6" HIGH. 5. IF THE FILTER FABRIC HAS DETERIORATED DUE TO ULTRAVIOLET BREAKDOWN, IT SHALL BE REPLACED. TYPICAL, FILTER EE NOT 'TO SCALE ERO IOMSEDIMENTATION CONTROL NOTES (1) APPROVAL OF THIS EROSION AND SEDIMENTATION CONTROL (ESC) PLAN DOES NOT CONSTITUTE AN APPROVAL OF PERMANENT ROAD OR DRAINAGE DESIGN (E.G SIZE AND LOCATION OF ROADS, PIPES, RESTRICTORS, CHANNELS, RETENTION FACILITIES, UTILITIES, ETC.) (2) THE IMPLEMENTATION OF THESE ESC PLANS AND THE CONSTRUCTION, MAINTENANCE, REPLACEMENT, AND UPGRADING OF THESE ESC FACILITIES IS THE RESPONSIBILITY OF THE APPLICANT/ESC SUPERVISOR UNTIL ALL CONSTRUCTION IS APPROVED. (3) THE BOUNDARIES OF THE CLEARING LIMITS SHOWN ON THIS PLAN SHALL BE CLEARLY FLAGGED BY SURVEY TAPE OR FENCING, IF REQUIRED, PRIOR TO CONSTRUCTION (SWDM APPENDIX D). 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 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. (5) THE ESC FACILIiTIES SHOWN ON THIS PLAN MUST BE CONSTRUCTED PRIOR TO OR IN CONJUNCTION WITH AIL CLEARING AND GRADING SO AS TO ENSURE THAT THE TRANSPORT OF SEDIMENT TO SURFACE WATERS, DRAINAGE SYSTEMS, AND ADJACENT PROPERTIES IS MINIMIZED. (6) THE ESC FACILITIES SHOWN ON THIS PLAN ARE THE MINIMUM REQUIREMENTS FOR ANTICIPATED SITE CONDITIONS. DURING THE CONSTRUCTION PERIOD, THESE ESC FACILITIES SHALL BE UPGRADED AS NEEDED FOR UNEXPECTED STORM EVENTS AND MODIFIED TO ACCOUNT FOR CHANGING SITE CONDITIONS (E.G. ADDITIONAL COVER MEASURES, ADDITIONAL SUMP PUMPS, RELOCATION OF DITCHES AND SLIT FENCES, PERIMETER PROTECTION ETC ).. RUNOFF Wi. - WITH SEDIN SEDIMENT CATCH BAS°1i FABRIC RAVEL, 12" MIN. DEPTH AESH (POULTRY NETTING) _ _ED WATER SEDIMENT BARRIER NOT TO SCALE G i i 0.0 o °0 •(J�' 0 00 �• 0 o °•o A�•o 0 0 .0.'. 00 0 0 no. o 00 000 0 R=25' MIN.—f ° 4!'-8- QUARRY SPALLS- GEOTEXT]LE 12" THICK MIN. INSTALL DRIVEWAY CULVERT IF THERE IS A ROADSIDE DITCH PRESENT. AS PER KING COUNTY ROAD STANDARDS. R/W AS PE t KING COUNTY ROAD STANDr \.:T,S DRIVEWAYS SHALL BE PAVE' f 0 THE EDGE OF R-O-W PRIOR TO iNSTALLATION OF THE CONSTRUCII`J�' ENTRANCE TO AVOID DAM/.GING THE ROADWAY. IT IS R'EC,' kIMENDED THAT THE ENTRANCE I'sE CROWNED SO THAT RUNOFF [pDINS OFF" THE PAD. THE LENGTH OF THE ROCK -LINED CONSTRUCTION ENTRANCE MUST BE A MINIMUM OF 100 FEET ON SITES WITH MORE THAN ONE ACRE OF EXPOSED SOIL. 119101 OF >tlr �` j, � � 9 - (7) THE ESC FACILITIES SHALL BE INSPECTED DAILY BY THE APPLICANT/ESC SUPERVISOR AND MAINTAINED TO ENSURE CONTINUED PROPER FUNCTIONING. WRITTEN RECORDS SHALL BE KEPT OF WEEKLY REVIEWS OF THE ESC FACILITIES. (8) ANY AREAS OF EXPOSED SOILS, INCLUDING ROADWAY EMBANKMENTS, THAT WILL NOT BE DISTURBED FOR TWO DAYS DURING THE WET SEASON OR SEVEN DAYS DURING THE DRY SEASON SHALL BE IMMEDIATELY STABILIZED WITH THE APPROVED ESC COVER METHODS (E.G., SEEDING, MULCHING, PLASTIC COVERING, ETC.) (9) ANY AREA NEEDING ESC MEASURES, NOT REQUIRING IMMEDIATE ATTENTION, SHALL BE ADDRESSED WITHIN SEVEN (7) DAYS. (10) THE ESC FACILITIES ON INACTIVE SITES SHALL BE INSPECTED AND MAINTAINED A MINIMUM OF ONCE A MONTH OR WITHIN 24 HOURS FOLLOWING A STORM EVENT. (11) 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. (12) 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. (13) COVER MEASURES WILL BE APPLIED IN CONFORMANCE WITH APPENDIX D OF THE SURFACE WATER DESIGN MANUAL. (14) 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 SEA`)"ON. A SKETCH MAP OF THOSE AREAS TO BE SEEDED AND THOSE AREAS TO REMAIN UNCOVERED SHALL BE SUBMITTED TO THE DDES INSPECTOR FOR REVIEW. 120TH AVE. S.E. EXIST. DITCH PROPOSED STORM DRAIN SEE PLANS FOR DEPTH SURFACE AREA DETERMINED AT TOP OF WEIR OUTFLOW CHANNEL IF CONSTRUCTED BY EXCAVATION 1' MIN. OVERFLOW DEPTH ---I , 2' SETTLING DEPTH I I 3.5' I-1.5' SEDIMENT DEPTH 11F, !l =, II NOTE: TRAP MAY BE FORMED BY BERM OR BY PARTIAL OR COMPLETE EXCAVATION 1' DEPTH 3/4"-1-1/2" WASHED GRAVE (MIN.) NATIVE SOIL OR COMPACTED BACKFILL GEOTEXTILE 6' MIN. 1' MIN. DEPTH OVERFLOW SPILLWAY GEOTEXTILE 1' DEPTH 2"-4" ROCK (MIN.) MIN. 1' DEPTH 2"-4" ROCK MIN. 1' DEPTH 3/4"—.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 SEDIMENT TRAM' NOT TO SCALE 1.5 DITCH SLOPE CHECK DAM SPACING 0 - 5% 150' 5 - 10% 100, > 10% 50' J,frl L,- 1 LV1, " `II- 1 INTO SWALE 0.25' MIN. 1' MIN. . • °. 1, FLOW FLOW KEY ROCK INTO SUMP BEHIND ROCK CHECK SHALE 0.25' MIN. 5 DAM SHALL BE INSPECTED DAILY, & CLEANED WHEN NOTE: ROCK SHALL BE g' DEBRIS EXCEEDS 1/2 OF MINUS QUARRY ROCK ITS DEPTH. ROCK CHECK DAM X-SECTION INTERCEPTOR DITCH w/ ROCK CHECK DAIS NOT TO SCALE KING COUNTY D.D.E.S. Comments: 0 Completion Date COmDletlon Date