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Home My WebLink AboutTED4001943.3STORM WATEh DRAINAGE PLAN NOTF,S 1. ALL CONSTRUCTION SHALL BE IN ACCORDANCE WIPE. R411710V PF,CIFICATIONS AND REQUIREMENTS. 2. DATUM SHALL BE K.C.A.S. UNLESS OTHERWISE APPROVED BY R�/VTON DEPARTMENT OF PUBLIC WORKS. 3. ALL SEDIMENTATIONAROSION FACILITIES MUST BE IN OPERATION PRIOR TO CLEARING AND BUILDING CONSTRUCTION, AND MUST BE SATISFACTORILY MAINTAINED UNTIL CONSTRUCTION IS '1OMPLFTED AND THE POTENTIAL FOR ON -SITE EROSION HAS ABATED. 4. GALVANIZED STEEL PIPE UTILIZED AS DETENTION FACILITIES SHALL HAVE TREATMENT NR 1 ASPHALT COATING OR GREATER INSIDE AND OUTSIDE. 5. ALL DISTURBED AREAS SHALL BE SEEDED UR ,STABILIZED BY OTHER SURFACE WATER MANAGEMENT APPROVED METHODS FOR THE CONTROL OF -N-SITE, EROSION FOLLOWING THE COMPLETION OF CONSTRUCTION. 6. GRASS SEEDING WILL BE ACCOMPLISHED ONLY WITH AN APPROVED TYPE HYDRO -SEEDER, OR AS OTHER- WISE APPROVED BY R�EWTOA/ DEPARTMENT OF PUBLIC WORKS. THE PERFORMANCE, BOND WILL NOT BE RELFASFD iTNTTL SATISFACTORY GROWTH OF GRASS HAS BEEN ESTABLISHED, OR AS OTHERWISE APPROVED BY R4117-0/V DEPARTMENT OF PUBLIC WORKS. 7. ALL PIPE SHALL BE LAID IN A PROPERLY PREPARED FOUNDATION ACCORDING TO WASHINGTON STATE D.O.T. SPECIFICATION 7-02.30 ). THIS SHALL INCLUDE NECESSARY LEVELING OF THE TRENCH FLOOR OR THE BEDDING (FOUNDATION) MATERIA1 WHICH SHALL BE SHAPED AND COMPACTED TO A UNIFORM CONDITION SO THAT THE ENTIRE LENGTH OF PIPE WILL BE SUPPORTED ON A DENSE,UNYIELDING BASE. THE FIRST LIFT OF PIPE BEDDING MAY BE OMITTED IF THE NATIVE MATERIAL IN THE FLOOR OF THE TRENCH MEETS THE REQUIREMENTS FOR "GRAVEL BACKFILL FOR PIPE BEDDING," AND FURTHER PROVIDED THAT THE TRENCH FLOOR IS LOOSENED, RESHAPED, AND COMPACTED TO FORM A DENSE, UNYIELDING BASE. 8. ALL BUILDING DOWNSPOUTS AND FOOTING 1)1-ATNS SHALL BE CONNECTF;D TC In STORM DRAINAGE SYSTEM UNLESS OTHERWISE APPROVED BY 94AIWA' )11PARTMENT OF PUBLIC; WORKS. 9. ALL DRAINAGE STRUCTURES NOT ()N P11Rl IC NIGHTS OF WAY SHALL HAVE ROUND, SOLID, LOCKING LIDS UNLESS OTHERWISE APPROVED . Y R,EWWW DEPARTMENT OF PUBLIC WORKS. 10. ROCK FOR EROSION PROTE ;TUON IN RUAJISIDE DITCHES, WHERE REQUIRED, SHALL BE SOUND QUARRY ROCK PLACED TO A DEPTH O) 1-FOOT. GRADATION SHALL BE: 112" to 2-- ----- 105, to 20� BY WEIGHT. 2" to L" ----- 2% to 40� „ 4" to 8" ----- 40J to, It. STRUCTURES SHALL NOT BE PF_hMITTED WITHIN 10-FT OF THE SPRING LINE OF ANY STORM DRAINAGE, PIPE(S), OR 15-FT FROM THE TOP OF ANY CHANNEL BANK. 12. THE STORM DRAINAGE SYSTEM SHALL BE CONSTRUCTED ACCORDING TO THE APPROVED PLANS WHICH ARE ON FILE IN THE DEPARTMENT OF PUBLIC WORKS CENThAL RECORDS. ANY DEVIATION Fr-^° TF API'RU,ED PLANS WILL REQUIRE WRITTEN APPROVAL FROM THE PROPER AGENCY, CURRENTLY THE ACAITOi(1 JEPART- MENT OF PUBLIC WORKS. 13. A COPY OF THE APPROVED PLANS MUST BE ON THE JOB SITE WHENEVER CONSTRUCTION IS IN PROGRESS. 14. PRIOR TO ANY CONSTRUCTION/DEVELOPMENT ACTIVITY, THr k',EWTOW DEPARTMENT OF PUBLIC WORKS DEVELOPMENT INSPECTION SECTION MUST BE CONTACTED (PH ^'' ZS-6`2631) JR A PRECONSTRUCTION MEETING. 1.5. ALL R/D FACILITIES WILL BE INSTALLED AND IN OPERATION PRIOh TO OR IN CONJUNCTION WITH ALI CONSTRUCTION ACTIVITY ;TNLESS THAT ACTI ITY EXCEEDS THE CAPACITY A"- - --- - = DT^�'NTATION CONTROL FACILITIES OR UNLESS OTHERWISE APPROVED BY T}r PZ-PT. OfP!/BL/C WORi('S. lu Aj_L CATCH BASIN GRATES SriALL BE INSTALLED AT 0.10 FT BELOW THE ADJACENT PAVEMENT ELEVATION. 1'?. PER KING COUNNTY CODE 20.50.100 SECTION D, THE PERSON REQUIRED TO CONSTRUCT THE FACILITY t'PS;ANT TO SECTION 20.50.1C)5'J SHALL MAINTAIN A LIABILITY POLICY IN THE AMOUNT OF ONE HUNDRED THO, SAND DOLLARS ($100,000.00) PER INDIVIDUAL, THREE HUNDRED THOUS.A_ND DOLLARS ($300,000.00) I` -_NCE, AND FIFTY THOUSAND DOLLARS ($�0,000.00) PROPER'' WHICH SHALL NAME R,E.VTOW AS AN ADDITION Al I SURED, AND WHI H SHALL PROTECT RE-NTO/i/ FROM ANY LIABILITY EROSION / SEDIMENTATION CONTROL NOTES 1. ALL LIMITS OF CLEARING AND AREAS OF VEGETATION PRESERVATION AS SHOWN ON THE PLAN SHALL BE CLEARLY MARKED IN THE FIELD AND OBSERVED DURING CONSTRUCTION. 2. ALL REQUIRED SEDIMENTATIONAROSION CONTROL FACILITIES MUST BE CONSTRUCTED AND IN OPERA- TION PRIOR TO LAND CLEARING AND/OR OTHER CONSTRUCTION TO INSURE THAT SEDIMENT LADEN WATER DOES NOT ENTER THE NATURAL DRAINAGE SYSTEM. ALL EROSION AND SEDIMENT FACILITIES SHALL BE MAINTAINED IN A SATISFACTORY CONDITION UNTIL SUCH TIPS THAT CLEARING AND/OR CONSTRUCTION IS COMPLETED AND POTENTIAL FOR ON -SITE EROSION HAS ABATED. THE IMPLEMENTATION, MAINTENANCE, REPLACEMENT, AND ADDITIONS TO THE EROSION/SEDIMENTATION CONTROL SYSTEM SHALL BE THE RESPONSI- BILITY OF THE PERMITTEE. 3. THE EROSION/SEDIMENTATION CONTROL SYSTEMS DEPICTED ON THIS DRAWING ARE INTENDED TO BE MINIMUM REQUIREMENTS TO MEET ANTICIPATED SITE CONDITIONS. AS CONSTRUCTION PROGRESSES AND/OR UNEXPECTED OR SEASONAL CONDITIONS DICTATE, THE PERMITTEE SHOULD ANTICIPATE THAT ADDED EROSION/SEDIMENTATION CONTROL FACILITIES MAY BE NEEDED TO INSURE FULL SILTATION CONTROL ON SITE. IT SHALL BE THE OBLIGATION AND RESPONSIBILITY OF THE PERMITTEE TO RESPOND TO ANY SUCH CHANGED CONDITIONS THAT MAY OCCUR AND TO PROVIDE ADDITIONAL FACILITIES OVER AND ABOVE THE MINIMUM REQUIREMENTS DURING THE COURSE OF CONSTRUCTION. THE INTENT AT ALL TIMES IS TO PROVIDE EROSION/SEDIMENTATION FACILITIES AS MAY BE NEEDED TO PROTECT ADJACENT PROPERTIES AND THE WATER QUALITY OF THE RECEIVING DRAINAGE SYSTEM. 4. APPROVAL OF THIS PLAN IS FOR EROSION/SEDIMENTATION CONTROL ONLY. IT DOES NOT CONSTITUTE AN APPROVAL OF THE STORM DRAINAGE DESIGN, SIZE, NOR LOCATION OF PIPES, RESTRICTORS, CHANNELS AND/OR RETENTION FACILITIES UNLESS SPECIFICALLY NOTED. 5. ALL DISTURBED AREAS WHICH HAVE BEEN STRIPPED OF VEGETATION AND WHERE NO WORK IS ANTICIPATED FOR A PERIOD OF 30 DAYS OR MORE MUST BE IMMEDIATELY STABILIZED WITH MULCHING, GRASS PLANTING OR OTHER APPROVED EROSION CONTROL TREATMENT APPLICABLE; TO THE SEASONAL CONDITIONS AT THE TIME. GRASS SEEDING ALONE WILL BE ACCEPTABLE ONLY DURING THE MONTHS OF APRIL THRU SEPTEMBER INCLUSIVE. SEEDING MAY PROCEED, HOWEVER, WHENEVER IT IS IN THE INTEREST OF THE PERMITTEE, BUT M1T.,T BF. A?' ^�NTFD WTTIJ VTTLCHING, MATTING (NETTING), OR OTHER TREATMENT APPROVED F tT4A1r49N .O,CP7 OF P(/B,41e WORKS . EVEN THOUGH OUTSIDE THE TIME PERIOD SPECIFIED. 6. A MINIMUM 3-FT HIGH FENCE IS REQUIRED FOR ALL EROSI0N/SEDIMENTATION CONTROL PONDS WHERE THE DEAD STORAGE DEPTH EXCEEDS 6 INCHES. rt "� i 2 7- 87 T T 5 10702 y} { z17 nt. UP TO THOSE AMOUNT:: FOR ANY ACCIDENT, NFGI"IGENCF , FAILURE OF THE FACILITY, OR ANY OTHER LIABILITY WHATSOEVER, RELATING To THE ;ONSTRU(,TION OR MAINTENANCE OF THE FACILITY. PRO(,W ',BILITY POLICY SHALL BE PR - ;) T -'HF OFYELOPMPF,NT IN.;F :TTI)N .�� :Tr h, C/TY AP01NA,4190,, RENTON, WA, +8055 (206 AYS4e.3lJ. I _„ :TTING UP A PRE -GUNS TRUCT Z,. - , , : _ IN l Ht, CASES Or ASSUMED BY KING COUNTY FOR MATNTFNAI?, "IT RSUANT 10 C/TY POd/GYi , SAID LIABILITY POLICY SHALL BE TERMINATED WHEN SAI1_ R,ENTOA1 MAINTENANCE RE6PONS181LiI'-r .JUMMRNCES. 1h. CATCH BASIN GRATES INSTALLED ON Cl rY RIGHT OF WAY SHALL CONFORM TO STD DW(J C/rY WHI'JH INCLUDES THE STAMPING: "OUTFALL TU STREAM, DUMP NO POLLUTANTS" AND "P-�OPERTY FC/TY 1 >. OPEN _1UT ROAD CROSSINGS FOR UTILITY TRENCHES ON EXISTING TRA'JELED ROADWAY SHALL BE BACK - FILLED ONLY WITH PEA GRAVEL OR 5/8" MINUS CRUHED ROCK AND MESHANICALLY 'OMPACTED. OUTS INTO THE EXISTING ASPHALT SHALL BE NEAT LINE CUT WITH SAW OR JACKHAMMER IN A CONTINUOUS LINT. A TEMPORARY COLD MIX PATCH MUST BE PLk FD IMMEDIATELY AFTER BACKFILL AND JUMPACTION. A PERMANENT HOT MIX PATCH SHALL BE PLACED WITHIN /0 DAYS AND SHALL BE THE THICKNESS OF THr ORIGINAL ASPHALT OR TWO INCHES, WHICHEVER IS GREATER. 20. ALL METAL DRIVEWAY CULVERTS WITHIN COUNTY RIGHT OF WAY MUST HAVE CONCRETE OR MASONRY HEAD- WALLS OF ACCEPTABLE DESIGN. 2i . 'TY TNSTALLATTON PLANS: PLANS SHOWING ALL UNDERGROUND UTILITIES M17c'T "_ 111,,' r rL EUF'VEIOPMENT INSPECTION SECTI01: ,�/Ti�.DA//�4! l:►OCr. RENT, /, , _ ) ) 5 I . �3✓-�1031 PLANS FOR WATER AND SANiiA i .:,CIE,' 1 Hr PROVIDED PRIOR TO "1 _ �r R()AD HA.)'' , OURSE MATERIALS. SAID PLANS SHALL SHOW THE LOCATION OF THE MEASURrS THAT WILL BE TAKEN TO PREVENT SOIL EROSION AND SEDIMENTATION. 22. GONSTRUCTION OF DFWATERING (GROUND WATER) SYSTEM SHALL BE IN ACCORDANCE WITH APWA .STD SPECIFICATION, SECTION r .S,�L viZ EL. o UA ��,f01A 0 vil. A _);TIN l 6,e O I J�7 TEMP. JD 7'CIV of l$ ul - 7,_,_MPORARY 7:616 /,Z "P,ERF S2;9Wo P,EA-0K,4Y-52- EiPOS/D�(/ CD�Ti�OL D/TCN D,�1 /V� 7- e O r S �ILT FEP c F- ►--, I L F,L:rc2. FA8zc _r MA'�In.I- � T I� 2x Z 14 GA WYAF T �II I GbuG'-A5 I'�•I�/Z� V�IASHE� � i Fi2� �i k TYF16A L 6Z055 5EGT1c>Q F! 1? Fd,a21(_ vA?E !,& F f 140, Z IKZ- 14 Ga.v�t✓�1�� A 5 EjL;1 Plc AL) }_ i T� N Zx4 PoUCaL-A,5 F1F. A40.6• Bu�Y goTiC�l of Ft�"f��? FA B K.) C_ MATF-FJ A L oN 8"x l' TiZ KIr-H LEVATI O W /. S/ZES � SLOPES PER PLAAk5. 2. OUTLET CAP/{C/TY i(/OT LESS rHA Al COMB14160 /iVL E/-5. 3" AIE%AL PA fz TS : .4. CORK OS / OA/ R ES/-5 TA k/ T, J C GAL l/A All ZEO, W 4L UM/NUM, TYKE Z B 1,4L414A//ZED57-,5EL P/PE,SWIRLL f1AhE Ti�E471Wet/T !, A._SPHAL-r CowrlA16. A-KAME A(/0 LAD,0 ,e) STEPS OFFSEr _50 A i`WO5 I Tom B � CL L_4t DUT GATE. C. F�EJ /t/l E /S G'L EAK OF 6-6�eB . STEMS D2 LAU�E2 --� 36"ItIl- r c_ (-- c rr iv vv / 0.41 / C- RECOMMENDED r--" "" OROVAL y/� s/ec 04, ttECOMMENDtD FOR APofP*v lArl tivd)�� 1/0/ep RECOMME# FOR APPR BV C/TY OF R6A(7'ON DEPAF-T/t'tENT OF WOP-KS APPRoVAL C>ATE'. y '/7-*` srcNAruRE; f4a.4e. IX/C5 GR[ P'; POSE FieAME �` G/ZATE ELEI/AT/Oc/ -- /HNvyKU ,STEEL GAL v j G� /-1C U.N/,CUM LAODE,2 / ,STEr� 5- �'TY� I 54",lO TYPE ZZ r-L 4 /V = ROU�/O, SOG/D CO!/ER M�'.�/CEO "O.�A/.U" K//Tff LOCff/,UG BOGT�S, U.t/GESS OTHE.eI�//SE A�/'�C!/Ev oy e1 rr or R,c#7vN. FA,STEA1 CHA/AC/ TD F,eAME. OIfE -Y LOkI ELEV re PieOV106' PETE.vr/O.V Rex PL A.0 S - Cf/.41AI - ¢OD # CAPf1C/r Y, SLArX CLEA (LOUT GATE: A SHE,4R GQ rE; /90A/ BaoY, B/�O�C/ZE MTo , OL yMP/C F"O� y OK L/FTG',4TE,AIL2C/C/I-LG, C,4SC'AOE CUC !/E,er D� � C. OTf/E� OEVi�'F L1PPT��!/ED ay C/TY OF wzh row. /2'' GYJTGET /7 AuvE,erELEv P>,e PLAX/5 N ��sr2/croe PZArE WiTAl / /¢ D.e/F/CE A�5 l c, .eEQ'o /ol-� 01-16 Y F0�2 • O/L POG L UT/O.t/ CO,UT.eOG D.e/F/lE _ 8 "/*f/4/. S,'AnTl TZt_'J CON'-' ,,_'CTI0N ENTkANC�- T-is measure is a stabilized pad of crushed stone or hog fuel located at any pv.nt w':ere traffic will bt. entering or leaving a Gonstruct_on site to reduce or e_iminate the tracking or flowing of sediment onto public right-of-ways. CONDITIONS WHERE PRACTICE. APPLIES A stabilized construction entrance applies to all points of construction ingress ai:(_i egress. SPFC'_FICATIONS Stone size should be crushed stone (21-2 inches to 1%2 inches). Thickness sh^ ` _ •. t Y'( yti„n o ;aches. Width should be the full. width of all poin,:.s cif ingress or egress. Length shoulj be as required but not less than 50 feet. The entrance shout_ ntained in a condition which will prevent tra,-k.ng or flowing of sediment onto public right- of-ways. I't_r1o. top-dre-.sing with additional stone may be necessary as field conditions dictate. When washing is required, it shall be none on an area stabilized with crushed stone- whist „ s into An approved sediment trap or sediment pu-)d . 4010 Tipp R, -v/sio" $,r 'P prow vcoo Date Scale .3W)VA / DrawnDG/Ac Job Sheet 5 N CIO y CA x o� Z z° C) o CnCn w y a y �c C17 7y O z of 6 stmot: