Laserfiche WebLink
2" MIN. <br />MIN. <br />SW 1/4, SEC. 07, TWP. 28N., R05E, W.M. <br />Y —4— 2' <br />15. <br />rwhare below. <br />:all L.r".",.,.,. <br />NATIVE SOIL OR <br />COMPACTED BACK <br />GEOTEXTILE <br />STABILIZE EXPOSED SIDE <br />SLOPES WITH VEGETATION <br />OR EQUIVALENT MEASURES <br />12" MIN. OVERFLOW <br />DEPTH (TYP.) <br />12" MIN. <br />OUTLET <br />2" TO 4" ROCK <br />�K" TO Iy2' WASHED GRAVEL <br />41 1 ",,,,,—TOP OF BERM <br />QUARRY SPALL PR07EC11ON <br />AT OVERFLOW <br />"12" MIN. L12" MIN. <br />TO 4" ROCK <br />TO lY2" WASHED GRAVEL <br />FILTER FABRIC <br />DISCHARGE TO STABILIZED <br />CONVEYANCE PATH OR <br />APPROVED OUTLET PIPE— <br />SECT/ON <br />TYPICAL TEMPORARY SEDIMENT TRAP <br />NOT TO SCALE <br />SEDIMENT TRAP/POND SUMMARY TABLE <br />FACILITY <br />IMPERVIOUS (AC.) <br />PERVIOUS (AC.) <br />TOTAL (AC.) <br />DESIGN Qto (CFS) <br />MINIMUM WATER <br />SURFACE AREA <br />(SF) <br />W.S. ELEV. (FT.) <br />BOT, ELEV. (FT.) <br />SED. TRAP #1 <br />5.02 <br />1.18 <br />6.20 <br />3.22 <br />6,708 <br />44.0 <br />40.5 <br />SED. TRAP 12 <br />2.59 <br />1 0.61 <br />1 3.20 <br />1 1.66 <br />1 3,458 <br />1 46.0 <br />1 42.5 <br />SED. TRAP3 <br />0.24 <br />1 0.05 <br />1 0.29 <br />1 0.15 <br />1 315 <br />1 44.0 <br />1 40.5 <br />NOTES: <br />1. SQUARE FOOTAGE REQUIREMENT SHOWN AT WEIR WATER SURFACE ELEVATION. <br />2. TRAP MAY BE FORMED BY BERM OR BY PARTIAL OR COMPLETE EXCAVATION. <br />SEDIMENT TRAP <br />TOP OF BERM (PER PLAN) <br />OPEN PIPE END AT DESIGN W.S. <br />2"0 STEEL PIPE OR METAL STAKE, <br />EMBED IN CONCRETE BASE OR EQUIVALENT ANCHOR <br />SUPPORT APPROVED BY ENGINEER <br />GRADE <br />AS REQUIRED TO " <br />6 i\i\i i i i !i✓i✓i✓ <br />MAINTAIN CONE SECURE TUBING TO PIPE SUPPORT <br />APPROXIMATELY MIN. WITH STRAPPING AT 12m O.C. MIN <br />4.5 = FOR D2 <br />W.S ELEV. =SEE TABLE ) <br />12" MIN. DIAM. <br />PERFORATED POLYETHYLENE <br />TUBING OR PLASTIC PIPE <br />GRAVEL FILTER, CLEAN FREE ) -- <br />WTYR <br />1 MAX <br />DRAINING GRAVEL MATERIAL - �� <br />\ OUTLET PIPE WHERE <br />BOT. ELEV.=SEE TABLE ffff r 6" iV�y������ SHOWN ON PLAN <br />SOLID 90' BEND ro •� x• <br />8"SQ <br />k <br />MIN <br />GRAVEL CONE TEMPORARY FILTER <br />NOT TO SCALE <br />ROADWAY IMPROVEMENTS <br />TEMP. DITCH OR <br />SWALE, PER PL/ <br />ROUGH OR <br />FINISHED GRADE — <br />FINISHED SLOPE, <br />PER PLAN <br />WORK AREA <br />VARIES <br />PER PLAN <br />TYP. SILT FENCE AT EXIST. <br />GRADE DOWNSLOPE OF <br />DISTURBED AREAS (SEE N( <br />TYPICAL CLEARING LIMITS <br />NOT TO SCALE <br />66" MAX <br />�qy I I <br />(. LIMIT OF GRADING <br />12" MAX., UNLESS NOTED <br />OTHERWISE ON PLAN <br />CONSTRUCTION FENCING (ORANGE <br />PLASTIC) AT EXIST. GRADE UPSLOPE AND <br />DOWNSLOPE OF DISTURBED AREAS AND <br />LEVEL AREAS ADJACENT TO SENSITIVE <br />AREA TRACT BUFFER <br />EXIST. GRADE <br />CLEARING LIMITS <br />NOTE <br />SEE NOTES ON TESC PLAN (SHEET C1.01) <br />FOR ADDITIONAL SPECIFICATIONS FOR SILT <br />FENCE LOCATION/PHASING. <br />18" MIN. oa- 12" COMPACT <br />DEPTH QUARRY SPALLS <br />ROCK LINED <br />NOTES: <br />I. EARTH OR GRASS LINED DITCHES MAY ONLY BE USED WITH PRIOR APPROVAL OF THE <br />COUNTY INSPECTOR AND WHERE LONGITUDINAL SLOPES OF 6% OR LESS AND A MAXIMUM <br />FLOW VELOCITY OF 5FPS EXISTS. <br />2. <br />ROCK CHECK DAMS SHALL BE USED IN EARTH OR GRASS LINED DITCHES FOR SLOPES <br />GREATER THAN 3% <br />J. <br />ROCK LINED DITCHES SHALL BE USED WHEN SLOPES EXCEED 6% OR FOR FLOW VELOCITY <br />GREATER THAN 5FPS. <br />MAINTENANCE STANDARDS: <br />1. ANY SEDIMENT DEPOSITION OF MORE THAN 0.5 FEET SHALL BE REMOVED SO THAT THE CHANNEL <br />IS RESTORED TO ITS DESIGN CAPACITY. <br />2. IF THE CHANNEL CAPACITY IS INSUFFICIENT FOR THE DESIGN STORM, IT MUST BE DETERMINED <br />WHETHER THE PROBLEM IS LOCAL (E.G., A CONSTRICTION OR BEND) OR THE CHANNEL IS <br />UNDERDESIGNED. IF THE PROBLEM IS LOCAL, THE CHANNEL CAPACITY MUST BE INCREASED <br />THROUGH CONSTRUCTION OF A BERM(S) OR BY EXCAVATION. IF THE PROBLEM IS UNDERDESIGN, <br />THE DESIGN ENGINEER SHALL BE N077FIED AND THE CHANNEL REDESIGNED TO A MORE <br />CONSERVATIVE STANDARD TO BE APPROVED BY SNOHOMISH COUNTY. <br />3. THE CHANNEL SHALL BE EXAMINED FOR SIGNS OF SCOURING AND EROSION OF THE BED AND <br />BANKS. IF SCOURING OR EROSION HAS OCCURRED, AFFECTED AREAS SHALL BE PROTECTED BY <br />RIP -RAP OR AN EROSION CONTROL BLANKET OR NET. <br />TEMPORARY INTERCEPTOR DITCH <br />NOT TO SCALE <br />2 <br />U <br />L <br />n <br />TYPE 11 QUARRY SPALLS <br />CHECK DAM SPACING <br />L=THE DISTANCE SUCH THAT POINTS A AND B ARE OF EQUAL ELEVATION <br />TYPE II QUARRY SPALLS MUST COMPLETELY COVER <br />THE BOTTOM AND SIDES OF THE DITCH <br />6" MAX. <br />g000 0 4" IMIN. <br />CROSS SECTION ROCK CHECK DAM <br />ROCK CHECK DAM <br />NOT TO SCALE <br />10' MAX. <br />CONT. HIGH VISIBILITY <br />CONSTRUCTION FENCE, <br />TENSAR OR EQUAL <br />CONSTRUCTION FENCE <br />NOT TO SCALE <br />METAL FENCE POSTS <br />(TY13•) <br />Lij <br />CL <br />or <br />2 <br />U <br />J <br />m <br />d- <br />CLIENT <br />U) <br />U <br />FOUR CORNERS, LLC <br />10900 NE 8TH STREET <br />SUITE 1200 <br />BELLEVUE, WA 98004 <br />PHONE: (425) 453-9551 <br />C �P�H <br />CONSULTANTS <br />Site Planning • Civil Engineering <br />Landscape Architecture - Land Use Consulting <br />11321-B NE 1201h Street <br />laddand, WA 98034 - )425) 285-2390 <br />101 South Wenatchee Avenue, Suite C3 I <br />Wenatchee, WA 98801 - )509) 293-7731 <br />www.cphconsuItants.com <br />PROJECT NO. <br />0024-18-042 <br />DRAWING <br />C1.101 <br />SHEET 7 OF 51 <br />a� <br />Copyright ® 2020 CPH Consultants, LLC. All Rights Reserved. <br />