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PTN. OF SE 1/4,SE 1/4 OF SEC 18,TWP 28 N, R5E W.M. CONTINUOUS ORANGE o 0
<br /> CONSTRUCTION FENCE,
<br /> TENSAR OR EQUAL } o �+
<br /> Figure 11-3.30:Sediment Pond Riser Detail 2• 2• an f
<br /> -III-III='
<br /> Provide adequate 18"MIN. ' 12"COMPACT �
<br /> Polyethylene cap alrepp10P DEPTH QUARRY SPALLS
<br /> ROCK LINED F<oy, 2 N
<br /> �� 1 METAL FENCE POSTS on
<br /> TYPE 11 QUARRY SPALLS - 10'MAX. I OR WOOD STAKE u, on
<br /> I.EARTH OR GRASS LINED DITCHES MAY ONLY BE USED WITH PRIOR APPROVAL OF THE \ A B y
<br /> Panoretad --= conugataa COUNTY INSPECTOR AND WHERE LONGITUDINAL SLOPES OF 6%OR LESS AND A MAXIMUM \��%///// / L CONSTRUCTION FENCE (TYP') c <
<br /> polrethylenedremage ___ metal dear \.�\�\\\\\\\ z o
<br /> FLOW VELOCITY OF 5FPS EXISTS. /�/\/\/\/ C, g
<br /> wrong,diameter / //�\//\//\//\/\ \ NOT TO S ALE h o p
<br /> 2"largerthen __ 3.6'min •�\�\\/\\j\�//\�// \/ �y()RK dRFd j m o
<br /> a 9tsall odmply --_ Wemdi ht god 2 GREATER CHECK
<br /> SHALL BE USED IN EARTH OR GRASS LINED DITCHES FOR SLOPES //�/`\/�\\�\\j\\/\\/% ROADWAY IMPROVEMENTS Z APPROX. LIMIT OF GRADING
<br /> At hm shall complyand _ I schedule r e,
<br /> with ASTM --- ceuPlinSt schedule 40 steel / VARIES
<br /> aAsnrouzg*. == TackvreM stnbmm.a'amalar CHECK DAM SPACING
<br /> per calculations J.ROCK LINED DITCHES SHALL BE USED WHEN SLOPES EXCEED 6%OR FOR FLOW VELOCITY PER PLAN I� F
<br /> GREATER THAN 5FPS L=THE DISTANCE SUCH THAT POINTS A AND B ARE OF EQUAL ELEVATION w a
<br /> MAINTENANCE STANDARDS: o CONSTRUCTION FENCING(ORANGE
<br /> a-thin. ANY SEDIMENT MEPOS17ION OF MORE THAN 0.5 FEET SHALL BE REMOVED SO THAT THE CHANNEL a PLASTIC)AT EXIST. GRADE UPSLOPE AN z
<br /> j— IS RESTORED TO ITS DESIGN CAPACITY. TEMP. DITCH OR DOWNSLOPE OF DISTURBED AREAS AND
<br /> t6•min. SWALE, PER PLAN
<br /> Con
<br /> T.crete bees LEVEL AREAS ADJACENT TO SENSITIVE
<br /> Anernatively,metal IF THE CHANNEI2.CAPACITY IS INSUFFICIENT FOR THE DESIGN STORM, IT MUST BE DETERMINED TYPE ll QUARRY SPALLS MUST COMPLETELY COVER AREA TRACT BUFFER
<br /> ROUGH OR
<br /> stakes and wire may be WHETHER THE PROBLEM IS LOCAL(E.G.,A CONSTRICTION OR BEND)OR THE CHANNEL IS THE BOTTOM AND SIDES OF THE DITCH LELY-
<br /> naea toPrevent notation FINISHED GRADE t•A R C
<br /> zx doer dies min. UNDERDESIGNED. IF THE PROBLEM IS LOCAL, THE CHANNEL CAPACITY MUST BE INCREASED i 2"•1 •� 4 WAS VB
<br /> THROUGH CONSTRUCTION OF A BERM(S)OR BY EXCAVATION. IF THE PROBLEM IS UNDERDESIGN, N, m 6"MAX. EXIST. GRADE eO yf4�,
<br /> THE DESIGN ENGINEER SHALL BE NOTIFIED AND THE CHANNEL REDESIGNED TO A MORE \
<br /> CONSERVATIVE STANDARD TO BE APPROVED BY SNOHOMISH COUNTY. \\\\\ \\\���14"MIN. 74fgX z
<br /> THE CHANNEL SBALL BE EXAMINED FOR SIGNS OF SCOURING AND EROSION OF THE BED AND \/�\%\\% /\ � FINISHED SLOPE, .p yF944
<br /> BANKS. IF SCOURING OR EROSION HAS OCCURRED, AFFECTED AREAS SHALL BE PROTECTED BY \\\\ \/\\/\\/\\/\\/\\/\\/\\/\\\\//\\\/\\/` PER PLAN CLEARING LIMITS oA;I,
<br /> RIP-RAP OR AN EROSION CONTROL BLANKET OR NET. //�//,�//�//�//�//�//�//,� NOTE rONAL 0
<br /> CROSS SECTION ROCK CHECK DAM TYP. SILT GRADE DOFENCE AT EXIST SEE NOTES ON ESC PLAN(SHEET C1.00)
<br /> DISTURBED AREAS SEE NOTE FOR ADDITIONAL LIMITS FOR SILT FENCE
<br /> THE
<br /> TEMPORARY INTERCEPTOR DITCH ROCK CHECK DAM TYPICAL CLEARING LIMITS LOCATION/PHASING. SHOWN ONUILT THIS PLANMATION IS PER
<br /> NOT TO SCALE NOT TO SCALE A FIELD SURVEY PERFORMED
<br /> NOT TO SCALE NOT TO SCALE BY MEAD GILMAN ASSOCIATES
<br /> AND/OR RECORD DATA
<br /> SEDIMENT POND PRINCIPLE SPILLWAY CALCULATIONS PROVIDED BY THE
<br /> Sediment Pond Riser Detail CONTRACTOR.
<br /> Revised June 2018
<br /> DEPARTMENT OF FACILITY NORTH SED. POND SOUTH SED. POND DET. VAULT
<br /> ECOLOGY Pleases UpYAv ..wy,w.gov/wp)lVhLhtmlforropynghtnotkeincludingpermimions,
<br /> State or Washington l nation onmbility,and diecaimer.
<br /> 10-YR, 24-HR FLOW RATE(CFS) 0.537 1.164 2.440
<br /> z
<br /> MINIMUM DIAMETER(IN) 10 10 10
<br /> 3
<br /> 2019 Stormwater Management Manual for Western Washington PROPOSED DIAMETER(IN) 10 10 10 z
<br /> z
<br /> Volume 11-Chapter 3-Page 394 0
<br /> Figure 113.29:Sediment Pond Cross Section Figure 11-3.28:Sediment Pond Plan View =
<br /> 0
<br /> 0
<br /> 0
<br /> SEDIMENT POND EMERGENCY SPILLWAY CALCULATIONS o
<br /> FACILITY NORTH SED. POND SOUTH SED. POND DET. VAULT ILvU
<br /> L L —
<br /> 10-YR, 24-HR FLOW RATE(CFS) 0.822 1.755 3.790 Q �i
<br /> Creatof ZD LLJ
<br /> Riser pipe emergency spalnrey 6'Min.A•dmh. SPILLWAY LENGTH MIN. (FT) 2.380 5.700 12.720
<br /> (Pdncipalspillvray) �•J
<br /> open at top vAth 1'Mn. Kay divider into slope to
<br /> treal,hack prevemgow —drilaes PROPOSED DIAMETER(IN) 6 6 12.750 v,
<br /> y Drto device
<br /> (seeaa,dtai) 1 _ The pond length shall Emergency z J
<br /> nvernove spillway O Q
<br /> 6o nd
<br /> mwtdhtehm rump
<br /> D'scharg
<br /> U o(�
<br /> - ---- -
<br /> t.e o ry tlance dll. Pond length SEDIMENT POND DEWATERING ORIFICE CALCULATIONS k
<br /> I spfea Innow Jy�•�
<br /> I ser pit Discharge t.at bill ed W LLJ
<br /> Embankment wnveyread.r tlet,or FACILITY NORTH SED. POND SOUTH SED. POND DET. VAULT Q
<br /> WFre-0acked sin rence compacted 96% level spreader L.L
<br /> Devralledn
<br /> staked haybales g so.h ea materials y0y
<br /> wrapped wkh fiaertabric, � ch as gravel or clean f� F
<br /> areq„ivak:ntdivid,r Concrete be- send shall notbe—it PROPOSED SURFACE AREA (SF) 750 1,540 6,000 v o
<br /> (see user detail) sot reaea or
<br /> equlvalenl divider
<br /> MIN. ORIFICE SIZE(IN) 1.110 1.590 3.140 CLIENT
<br /> a PROPOSED ORIFICE SIZE(IN) 1-1/8" 1-5/6" 3-1/4" PACIFIC RIDGE HOMES
<br /> Note:Pond may beformed by berm or by padial orwmplete excavation 17921 BOTH ELL-EVERETT HWY
<br /> PROPOSED PERF. PIPE SIZE(IN) 4 4 4 SUITE 100
<br /> BOTH ELL,WA 98012
<br /> (425)438-8444
<br /> SEDIMENT POND SUMMARY TABLE
<br /> NorroscALE NOT TO SCALE MINIMUM WATER C
<br /> �� �� FACILITY NO. IMPERVIOUS(AC.) PERVIOUS(AC.) TOTAL(AC.) DESIGN 02(CFS)* SURFACE AREA W.S. ELEV. (FT.) BOT. ELEV. (FT.)
<br /> (SF)
<br /> IPIH
<br /> Sediment Pond Cross Section Sediment Pond Plan View SED. POND CONSULTANTS
<br /> m R-isetl June 2016 Revised June 2016 (NORTH) 0.767 0.256 1.022 0.338 705 SEE PLAN SEE PLAN She Planning•Clvl Engineering
<br /> w DEPARTMENT OF DEPARTMENT OF
<br /> It ECOLOGY ECOLOGY SED. POND 1.987 0.662 2.649 0.736 1,534 SEE PLAN SEE PLAN and ape Archde Nre•Land U e Con ulting
<br /> � Plssesee hgplA»»v.wy wa.gov/oopyrighLhtrN for wpyrigM notice incledir,g permissbns, Please see hupyA ..-y.wa.gor/copyright.hhnlf.,-pyrightnoticeincludingpermi.ons, (SOUTH) 11321-13NEIMI,Sheet
<br /> State of Washington imitation offabiliy,antldisclaimer. State of Washington limhatlenof liabilily,and disclaimer. Ht.d.WA 98n34'142512852390
<br /> 101 oa DET. VAULT** 2.753 0.918 3.671 2.44*** 5,084 46Z South Wenatchee Avenue,Suite C3
<br /> wena 000 463.500 tchee,WA 9MI-(509)2917731
<br /> `Y w.cphconsultants.com
<br /> �I
<br /> o< *Q2 FLOW RATE ARE THE 2-YEAR, 24-HOUR PEAK FLOWS DETERMINED BY USING AUTODESK STORM AND SANITARY SEWER ANALYSIS WITH SCS TIME OF PROJECT NO.
<br /> CONCENTRATION, IDF CURVE AND RATIONAL METHOD LAND USE COEFFICIENT. 0132-21-028
<br /> i� 2019 Stormwater Management Manual for Westem Washington 2019 Stormwater Management Manual for Western Washington **THE DETENTION VAULT SHALL BE USED AFTER IT IS CONSTRUCTED AND THE STRUCTURAL ELEMENTS HAVE BEEN INSPECTED AND APPROVED FOR OPERATION. ONCE
<br /> Volumell-Chapter3Page 393 Volumell-Chapter3Page 392 OPERATIONAL, BOTH SEDIMENT PONDS CAN BE REMOVED. A TEMPORARY CONTROL STRUCTURE SHALL BE USED UNTIL THE SITE IS STABILIZED AND THE CONVEYANCE DRAWING
<br /> -
<br /> Y N - SYSTEM IS OPERATIONAL C1.101
<br /> o ***10-YEAR, 24-HOUR FLOW RATES USED TO CHECK SIZE OF DETENTION VAULT AS SEDIMENT POND.
<br /> o h
<br /> o�
<br /> a .ar.elo SHEET 7 OF 45
<br /> s Cail b:roba ww.v eye. ®2022 wn comvnaeu,uc.All ai ho aaearuaa.
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