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U>_ <br />�Ln <br />m< <br />oL <br />�< <br />�>- <br />oQ <br />�L <br />�Q <br />o z <br />/0 <br />�_> <br />N <br />0 0 <br />U <br />D_ <br />/ o <br />N� <br />0 �, <br />/N <br />U 0 <br />0)N <br />0 <br />iN <br />0 <br />LMIMIM <br />ROCK LINED <br />� OMPACT <br />WuHRRY SPALLS <br />NOTES: <br />1. EARTH OR GRASS LINED DITCHES MAY ONLY BE USED WITH PRIOR APPROVAL OF THE <br />COUNTY INSPECTOR AND WHERE LONGITUDINAL SLOPES OF 6Z OR LESS AND A MAXIMUM <br />FLOW VELOCITY OF 5FPS EXISTS. <br />2. ROCK CHECK DAMS SHALL BE USED IN EARTH OR GRASS LINED DITCHES FOR SLOPES <br />GREA TER THAN 3% <br />3. ROCK LINED DITCHES SHALL BE USED WHEN SLOPES EXCEED 6Z OR FOR FLOW VELOCITY <br />GREA TER THAN 5FPS. <br />MAINTENANCE STANDARDS. <br />ANY SEDIMENT ®FPOSITION OF MORE THAN 0.5 FEET SHALL BE REMOVED SO THAT THE CHANNEL <br />IS RESTORED TO ITS DESIGN CAPACITY. <br />IF THE CHANNEL2. CAPA CI TY 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 UNDERDESI GN, <br />THE DESIGN ENGINEER SHALL BE NOTIFIED AND THE CHANNEL REDESIGNED TO A MORE <br />CONSERVATIVE STANDARD TO BE APPROVED BY SNOHOMISH COUNTY. <br />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 />a <br />s <br />Know what's below. <br />Call before ou <br />Figure II-3.30: Sediment Pond Riser Detail <br />Polyethylene cap <br />Perforated <br />polyethylene drainage <br />tubing, diameter min. <br />2" larger than <br />dewatering orifice. <br />Tubing shall comply <br />with ASTM F667 and <br />AASHTO M294. <br />soft <br />"ONFOR <br />DEPARTMENT OF <br />ECOLOGY <br />State of Washington <br />zz- <br />zz- <br />zz- <br />Watertight <br />coupling <br />Provide adequate <br />strapping <br />Corrugated <br />metal riser <br />Tack weld <br />r' 6" min. r------- <br />18" min. <br />Concrete base <br />2X riser dia. min. <br />3.5' min. <br />Dewatering orifice, <br />schedule 40 steel <br />stub min. diameter <br />per calculations <br />Alternatively, metal <br />stakes and wire may be <br />used to prevent flotation <br />NOT TO SCALE <br />Sediment Pond Riser Detail <br />Revised June 2016 <br />Please see httpJ/www.ecy.wa.gov/copyright.html for copyright notice including permissions, <br />limitation of liability, and disclaimer. <br />2019 Stormwater Management Manual for Western Washington <br />Volume ll - Chapter 3 - Page 394 <br />* TEMPORARY EROSION CONTROL IS DESIGNED TO MEET FLOW CONTROL UTILIZING A SEDIMENT <br />TRAP, WHICH DOES NOT REQUIRE A RISER. ULTIMATELY, THE SEDIMENT AND FLOW CONTROL <br />WILL BE MITIGATED BY THE PROPOSED PERMANENT DETENTION VAULT. SIZING FOR <br />DEWATERING ORIFICE, PRINCIPAL SPILLWAY, EMERGENCY SPILLWAY, AND MINIMUM SEDIMENT <br />FLOW CONTROL SIZING ARE PROVIDED ON THIS SHT. THEY ARE PROVIDED FOR THE FINAL <br />CONFIGURATION USING THE PERMANENT STORMWATER SYSTEM AND FOR THE TEMPORARY TRAP <br />IF A RISER IS REQUIRED DURING CONSTRUCTION DUE TO FIELD CONDITIONS. <br />CONTRACTOR/CESCL ARE RESPONSIBLE FOR DETERMINING APPROPRIATE EROSION CONTROL <br />BMPS MODIFICATION AS NEED TO MEET ECOLOGY NPDES PERMIT REQUIREMENT.. <br />F\ <br />2 <br />PTN. OF W 1/2 SE 1/4 OF SEC 14, TWP 28N, R4E W.M. <br />UnLUn ur11m �rr��►►v� <br />QUARRY SPALLS <br />L=THE DISTANCE SUCH THAT POINTS A AND B ARE OF EQUAL ELEVATION <br />TYPE 11 QUARRY SPALLS MUST COMPLETELY COVER <br />THE BOTTOM AND SIDES OF THE DITCH <br />ROCK CHECK DAM <br />NOT TO SCALE <br />T <br />?4" MIN. <br />CROSS SECTION ROCK CHECK DAM <br />RECORD DRAWING <br />This Record Drawing has been prepared, in part, <br />based on "As -Built" information provided by <br />others. Though the as -built information and this <br />drawing are based on the best available <br />information, no presumption should be made <br />regarding the drawing's accuracy. <br />Jim Knappert <br />Permit Inspector <br />NA TI VE SOIL OR <br />COMPACTED BACK FILL <br />GEOTEXTILE <br />6' MIN. <br />12" MIN. <br />12 MIN. <br />,MITI FT <br />io/z7/zozs <br />12 MIN. <br />2" TO 4" ROCK <br />3/4" TO 1 %2" WASHED GRAVEL <br />APPROX. LIMIT OF GRADING <br />WORK AREA <br />ROADWAY IMPROVEMENTS VARIES <br />J <br />PER PLAN .>- <br />TEMP. DI TCH OR <br />SWALE, PER PLAN <br />ROUGH OR <br />FINISHED GRADE <br />FINISHED SLOPE, <br />PER PLAN <br />TYP. SILT FENCE AT EXIST. <br />GRADE DOWNSLOPE OF <br />DISTURBED AREAS (SEE NOTE)-/ <br />TYPICAL CLEARING LIMITS <br />NOT TO SCALE <br />STABILIZE EXPOSED SIDE <br />SLOPES WITH VEGETA110N <br />OR EQUIVALENT MEASURES <br />12" MIN. OVERFLOW 4' MIN. , � TOP OF BERM <br />DEPTH (TYP.) <br />QUARRY SPALL PROTECTION <br />AT OVERFLOW <br />W. S. ELEV. <br />/ L 12" MIN. L 12" MIN. <br />2" TO 4" ROCK <br />TO 1 %2" WASHED GRAVEL <br />NON -WOVEN <br />FILTER FABRIC <br />DISCHARGE TO STABILIZED <br />CONVEYANCE PATH OR <br />APPROVED OUTLET PIPE— <br />SFr-TMAi <br />TEMPORARY SEDIMENT TRAP <br />NOT TO SCALE <br />CONSTRUCTION FENCING (ORANGE <br />PLASTIC) A T 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 ESC PLAN (SHEET C1.00) <br />FOR ADDITIONAL LIMITS FOR SILT FENCE <br />LOCA TION/PHASING. <br />/%/%AITIAII l/ll If` nn A AI/1r <br />� 10' MAX. � " METAL FENCE POSTS <br />OR WOOD STAKE <br />CONSTRUCTION FENCE (TYR) <br />NOT TO SCALE <br />SEDIMENT TRAP PRINCIPLE SPILLWAY CALCULATIONS <br />FACILITY <br />SED. TRAP <br />DET. VAULT <br />10-YR, 24-HR FLOW RATE (CFS) <br />0.634 <br />0.634 <br />MINIMUM DIAMETER (IN) <br />10 <br />10 <br />PROPOSED DIAMETER (IN) <br />10 <br />10 <br />SEDIMENT TRAP EMERGENCY SPILLWAY CALCULATIONS <br />FACILITY <br />SED. TRAP <br />DET. VAULT <br />10-YR, 24-HR FLOW RATE (CFS) <br />0.634 <br />0.634 <br />SPILLWAY LENGTH MIN. (FT) <br />3.04 <br />3.04 <br />PROPOSED DIAMETER (IN) <br />6 <br />6 <br />SEDIMENT TRAP DE -WATERING ORIFICE CALCULATIONS <br />FACILITY <br />SED. TRAP <br />DET. VAULT <br />PROPOSED SURFACE AREA (SF) <br />828 <br />6,000 <br />MIN. ORIFICE SIZE (IN) <br />1.17 <br />1.17 <br />PROPOSED ORIFICE SIZE (IN) <br />1-3116" <br />1-3116" <br />PROPOSED PERF, PIPE SIZE (IN) <br />4 <br />4 <br />SEDIMENT TRAP SUMMARY TABLE <br />MINIMUM WA TER <br />FACILITY NO. <br />IMPERVIOUS (AC.) <br />PERVIOUS (AC.) <br />TOTAL (AC.) <br />DESIGN Qz (CFS) <br />SURFACE AREA <br />W.S. ELEV. (FT.) <br />BOT. ELEV. (FT.) <br />(SF) <br />SED. TRAP <br />1.05 <br />0.80 <br />1.85 <br />0.3902 <br />813 <br />554.5 <br />551.0 <br />THIS SHEET IS INFORMATIONAL ONLY. SEE <br />CITY OF EVERETT PERMIT PW2211-017 FOR <br />APPROVED SWPPP, TESC PLANS AND <br />DETAILS AND STRUCTURAL PLANS. <br />Copyright © 2023 CPH Consultants, LLC. All Rights Reserved. <br />� 0 (n <br />m <br />W <br />0 <br />0- <br />z <br />o <br />� <br />T <br />f <br />3 <br />U <br />1 <br />Q <br />� <br />w <br />IX <br />m <br />O <br />Uj <br />Uj <br />Q <br />0 <br />M <br />N <br />m <br />M <br />N <br />N <br />8 <br />0 <br />z <br />54944 <br />�ssrCIS-Ts <br />4NAL <br />�01 <br />THE AS -BUILT INFORMATION <br />SHOWN ON THIS PLAN IS PER <br />A FIELD SURVEY PERFORMED <br />BY MEAD GILMAN ASSOCIATES <br />AND/OR RECORD DATA <br />PROVIDED BY THE <br />CONTRACTOR. <br />U <br />CLIENT <br />a <br />O <br />z <br />U) <br />w <br />w <br />W <br />PACIFIC RIDGE HOMES <br />17921 BOTHELL-EVERETT HWY <br />SUITE 100 <br />BOTHELL, WA 98012 <br />C P I I <br />CONSULTANTS <br />Site Planning • Civil Engineering <br />Landscape Architecture • Land Use Consulting <br />11321-13 NE 120th Street <br />Kirkland, WA 98034 - (425) 285-2390 <br />101 South Wenatchee Avenue, Suite C3 <br />Wenatchee, WA 98801 - (509) 293-7731 <br />www.cphconsultanfs.com <br />PROJECT NO. <br />0132-21-023 <br />DRAWING <br />C 1. 10 1 <br />SHEET 6 OF 36 <br />