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Home My WebLink AboutTED4001798.6VIUINI I T MAr N-re SC LE : 1 =501 14 5 . Taper Toper :. �- 2. ° o ' 1 I'- 7 1/2" 'o •' r n . Face of Curb-" Gutter �'-Provide 4" x 4" Poet Hole in Concrete or Saweut When Placing Mail Box Poet. SIDEWALK MAILBOX LOCATION NO SCALE I � 3e4 82 = 3o"CM r � \S-0.60%k 380- STORMWATER DRAINAGE PLAN NOTES (WHERE APPLICABLE) 1. ALL CONSTRUCTION SHALL BE IN ACCORDANCE WITH KING COUNTY SPECIFICATIONS. 2. DATUM SHALL BE K.C.A.S. UNLESS OTHERWISE APPROVED BY KING COUNTY DEPARTMENT OF PUBLIC WORKS. 3. ALL SEDIMENTATION/EROSION FACILITIES MUST BE IN OPERATION PRIOR TO CLEARING AND BUILDING CONSTRUCTON, AND THEY MUST BE SATISFACTORILY MAINTAINED UNTIL CONSTRUCTION ARE COMPLETED AND THE POTENTIAL FOR ONSITE EROSION HAS PASSED. 4. GALVANIZED STEEL PIPE UTILIZED AS DETENTION FACILITIES SHALL HAVE ASPHALT TREATMENT #1 OR BETTER INSIDE AND OUTSIDE. 5. ALL DISTURBED AREAS SHALL BE SEEDED OR STABILIZED BY OTHER SURFACE WATER MANAGEMENT METHODS FOR THE PREVENTION OF ONSITE EROSION AFTER THE COMPLETION OF CONSTRUCTION. 6. GRASS SEEDING WILL BE DONE USING AN APPROVED TYPE HYDRO -SEEDER, OR AS OTHERWISE APPROVED BY KING COUNTY DEPARTMENT OF PUBLIC WORKS. THE PERFORMANCE BOND WILL NOT BE RELEASED UNTIL THE GRASS HAS BEEN ESTABLISHED, UNLESS OTHERWISE APPROVED BY THE KING COUNTY DEPARTMENT OF PUBLIC WORKS. 7. ALL PIPE SHALL BE LAID ON A PROPERLY PREPARED FOUNDATION ACCORDING TO WASHINGTON STATE SPEC. 7-02.3(1). THIS SHALL INCLUDE NECESSARY LEVELING OF THE TRENCH BOTTOM OR THE TOP OF THE FOUNDATION MATERIAL AS WELL AS PLACEMENT AND COMPACTION OF REQUIRED BEDDING MATERIAL TO UNIFORM GRADE SO THAT THE ENTIRE LENGTH OF THE PIPE WILL BE SUPPORTED ON A UNIFORMLY DENSE UNYIELDING BASE. IF THE NATIVE MATERIAL IN THE BOTTOM OF THE TRENCH MEETS THE REQUIREMENTS FOR "GRAVEL BACKFILL FOR PIPE; BEDDING" THE FIRST LIFT OF PIPE BEDDING MAY BE OMITTED PROVIDED THE MATERIAL IN THE BOTTOM OF THE TRENCH IS LOOSENED, REGRADED AND COMPACTED TO FORM A DENSE UNYIELDING BASE. 8. ALL BUILDING DOWNSPOUTS AND FOOTING DRAINS SHALL BE CONNECTED TO THE STORM DRAINAGE SYSTEM, UNLESS OTHERWISE APPROVED BY THE DEPARTMENT OF PUBLIC WORKS. 9. ALL DRAINAGE STRUCTURES NOT ON PUBLIC RIGHT-OF-WAYS SHALL HAVE ROUND, SOLID LOCKING LIDS, UNLESS OTHERWISE APPROVED BY THE DEPARTMENT OF PUBLIC WORKS. 10. ROCK FOR EROSION PROTECTION OF ROADSIDE DITCHES, WHERE REQUIRED, SHALL BE OF SOUND QUARRY ROCK TO A DEPTH OF I FOOT. ROCK AGGREGATE TO BE AS FOLLOWS: �" - 2" ---- IOZ - 207 2" - 4" ---- 20% - 40% 4" - 8" ---- 40% - 70% 11. STRUCTURES SHALL NOT BE PERMITTED WITHIN 10' OF THE SPRING LINE OF ANY STORM DRAINAGE PIPE(S), OR 15' 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 CENTRAL RECORDS. ANY DEVIATION FROM THE APPROVED PLANS WILL REQUIRE WRITTEN APPROVALFROM THE PROPER AGENCY, CURRENTLY THE KING COUNTY DEPARTMENT OF PUBLIC WORKS. 13. A COPY OF THESE APPROVED PLANS MUST BE ON THE JOB SITE WHENEVER CONSTRUCTION IS IN PROGRESS. 14. PRIOR TO ANY CONSTRUCTION/DEVELOPMENT ACTIVITY THE KING COUNTY DEPARTMENT OF PUBLIC WORKS DEVELOPMENT INSPECTION SECTION MUST BE CONTACTED (Phone No. 255-2531) FOR A PRE -CONSTRUCTION MEETING. 15. IN ADDITION TO FULL INSTALLATION OF TEMPORARY EROSION AND SEDIMENTATION CONTROL FACILITIES, ALL R/D FACILITIES WILL BE INSTALLED AND IN OPERATION PRIOR TO OR IN CONJUNCTION WITH ALL CONSTRUCTION ACTIVITY WHENEVER THAT ACTIVITY EXCEEDS THE CAPACITY AND INTENT OF THE EROSION/SEDIMENTA- TION•CONTROL FACILITIES OR UNLESS OTHERWISE APPROVED BY THE SURFACE WATER MANAGEMENT DIVISION. 16. ALL CATCH BASIN GRATES SHALL BE DEPRESSED 0.10 FEET BELOW PAVEMENT LEVEL. 17. PER KING COUNTY CODE 20.50.100 SECTION D., THE PERSON RE- QUIRED TO CONSTRUCT THE FACILITY PURSUANT TO SECTION 20.50.050 SHALL MAINTAIN A LIABILITY POLICY IN THE AMOUNT OF ONE HUNDRED THOUSAND DOLLARS ($)00,000) PER INDIVIDUAL, THREE HUNDRED THOUSAND DOLLARS ($300,000) PER OCCURRENCE AND FIFTY THOUSAND DOLLARS ($50,000) PROPERTY DAMAGE, WHICH SHALL NAME KING COUNTY AS AN ADDITIONAL INSURED, AND WHICH SHALL PROTECT KING COUNTY FROM ANY LIABILITY UP TO THOSE AMOUNTS FOR ANY ACCIDENT, NEGLIGENCE, FAILURE OF THE FACILITY, OR ANY OTHER LIABILITY WHATSOEVER, RELATING TO THE CONSTRUCTION OR MAINTENANCE OF THE FACILITY. PROOF OF SAID LIABILITY POLICY SHALL BE PROVIDED TO THE DEVELOPMENT INSPECTION SECTION, 155 MONROE AVENUE N.E., RENTON, WA 98055 (206- 255-2531, OR OPERATOR ASSISTED -ZENITH 5050, TOLL FREE NUMBER) PRIOR TO SETTING UP A PRE -CONSTRUCTION MEETING, PROVIDED, THAT IN THE CASE OF FACILITIES ASSUMED BY KING COUNTY FOR MAINTENANCE PURSUANT TO SECTION 20.50.110, SAID LIABILITY POLICY SHALL BE TERMINATED WHEN SAID COUNTY MAINTENANCE RESPONSIBILITY COMMENCES. 18. CATCH BASIN GRATES INSTALLED ON COUNTY RIGHT-OF-WAY SHALL CONFORM TO STANDARD DRAWING NO. 39 OR NO. 44 WHICH INCLUDES THE STAMPING "OUTFALL TO STREAM, DUMP NO POLLUTANTS" AND "PROPERTY OF KING COUNTY". 19. OPEN CUT ROAD CROSSINGS FOR UTILITY TRENCHES ON EXISTING TRAVELED ROADWAY SHALL BE BACKFILLED ONLY WITH PEA GRAVEL OR 5/8" MINUS CRUSHED ROCK AND MECHANICALLY COMPACTED. CUTS INTO THE EXISTING ASPHALT SHALL BE NEAT LINE CUT WITH SAW OR JACKHAMMER IN A CONTINUOUS LINE. A TEMPORARY COLD MIX PATCH MUST BE PLACED IMMEDIATELY AFTER BACKFILL AND COMPACTION. A PERMANENT HOT MIX PATCH SHALL BE PLACED WITHIN 30 DAYS AND SHALL BE THE THICKNESS OF THE ORIGINAL ASPHALT OR TWO INCHES, WHICHEVER IS GREATER. o0 90 /z.,COMC@ 3 S� 42 ELL7 .20 / / / % / 42 nV v �' 3 575 3 �8 0 0� \ �� / / / CB l� , / YPe 1Z CB'`/4 Type I1 c w -- \9 cD fry 7 e ZI- 7.Z \\t] SE NOTE � 9 SEE /VO%E a9`9 ' ' / /S. O' ROL L ED CURB (28 ' ,DLO W L /NE STA � f S/ W/RESTR/CTOR / � ) d7 e �. 1. E = 3 75 SO , /Z /^/ t / 9. 0' ROLLED CURB (36 fL O W L NEJ STA- fo t 48. 88 / E = v3 7/ 79, -2 /8 ""= 371. 70 E_X /5 T/ v /O' G4�E F�'37 . SS -37 75Ai Q v /'1 4 PVC• ROOF OR A / N STU6 �J LO"TE CROWN TO CROWN- - % II CATCH BASIN 1OCAT/OA/ -HTS '54-O" S' CW ■N T 4.1*10fII0VALK i its 14'-O' pzx4mv Xv1�c,Rel@_ RA..►.CD CiJI[� • 20 ALL METAL DRIVEWAY CULVERTS WITHIN COUNTY RIGHT-OF-WAY MUST HAVE CONCRETE OR MASONRY HEADWALLS OF ACCEPTABLE DESIGN. 21. UTILITY INSTALLATION PLANS: PLANS SHOWING ALL UNDERGROUND UTILITIES MUST BE PROVIDED TO THE KING COUNTY DEPARTMENT OF PUBLIC WORKS DEVELOPMENT INSPECTION SECTION, 155 MONROE AVENUE N.E., RENTON, WA 98055 (206-255-2531, OR OPERATOR ASSISTED, TOLL FREE NUMBER - ZENITH 5050). PLANS FOR WATER AND SANITARY SEWERS MUST BE PROVIDED PRIOR TO THE PRE -CONSTRUCTION MEETING. PLANS FOR ALL OTHER UTILITIES MUST BE PROVIDED PRIOR TO THE INSTALLATION OF ROAD BASE COURSE. MATERIALS. SAID PLANS SHALL SHOW THE LOCATION OF THE MEASURES THAT WILL BE TAKEN TO PREVENT SOIL EROSION AND SEDIMENTATION. 22. CONSTRUCTION OF DEWATERING SYSTEM SHALL BE IN ACCORDANCE WITH SECTION 61-3.02 OF THE APWA STANDARD SPECIFICATIONS. 23 CORRUGATED ALUMINUM PIPE SHALL MEET THE REQUIREMENTS OF CURRENT AAS.HTO. SPEC M-196 6'' DIAM THRU 10"DIAM SHALL BE 18 GAUGE WITH 1 1/2'' x 1/4" CORRUGATIONS. 12" DIAM THRU 30" DIAM. SHALL BE 16 GAUGE WITH 2 2/3" x 1/2" CORRUGATIONS. 24 MINIMUM COVER FOR CORRUGATED ALUMINUM PIPE SHALL BE I FOOT 25 CONCRETE PIPE SHALL MEET THE REQUIREMENTS OF ASTM CIIB-68 FOR STANDARD CONCRETE DRAINAGE PIPE 26 MINIMUM COVER FOR CONCRETE PIPE 8" DIAM THRU 12" DIAM SHALL ,BE ,1�' FEET AND FOR PIPE 15" DIAM THRU 30" DIAM SHALL BE 2 FEET 1*--EXISTING cavc Jc- 6RATE EL = 395 05 r TRASH RAC' ( EX. GR. = 392.9 BER EL=3944 f QUA RR Y' ROCK nl�l E=39ZClap D/TCH E = 389.89 C,4 T CH BASIN #/7 TrPE ly 14'-O' ,lt' v, 1 P" COMPT. DEr11� cLA-" 'G'A5pNALr O. O! : I :. su So RrDE 'Xori o. O! =1 .A- 7'-O° 03' Ceilri SINT co"CtaTw 5101WALK I %2 ' MIN• GOMrT. 00r M CJ^ . OL~AIC/NG Per COiJ"tsi 2 %' M/N. COAIPT DOPI1N CA. SUA,-AC/N(3 MASS C,O(^&N GAA VEi- 1/Asi CLA" A A"A1 K aF /tJRQU/AtA17 AE7wt/Vp/NO ON '.ARIL oomD/T/ON,f . TYPICAL STREET SECTION Nrs Pw f 1,- 0' Z04" 7T. S. E 2 00 r" ST 71VvrrwTIF A 2' COMFY DET'TW CL.AtSS B A'PiIAL.T' CONOTE i Sr i C r O SS s /o/o Z C 0 h h 07' 6 :I Ma/•lT/4ej q �,/� STr2e7` o✓QY/ CJ•MIIfT ma H C.l1Ro Ju,5G,IRADE LOPE : O.O8: l comp r. oar7i/ cR . NAw^&cmo w- cm Rss twly. cover. Dle'7pw cR. 5amIvAc( 0 BASF (BRA ✓&L dl !1!' CL A _" 0 AfAY AW Ar&t U/RA10 Darwwp #VI'3 an/ soIL CXWDl rloNa . TYPICAL HA F TR /S" 0' ^V L ED CURB ' fL OW L /NE) /V 0' RAC L EO CLwa (36, fL Ow L /NE) S1 o I.okk � Z 4"'PVC ROOF ORA/N S7-US, ° \� LOCATE CR0W,1V TO C,�OWAI ' 3 � O �I V2 " .. /••ors /VO rE: PRO V/DC ASPHALT BERM ON DOWNSTREAM SIDE POR GRADES GREATER THAW 6 %. TS _3 4 4/ o G � ■ _R 7. �/9/g�•- / - 2 8S CHANGES PER K/NG C O. 2 /2-/084 CHNG /N 5' D P/PE SIZE / -20-84 CHANGES PER KING CO. V DESCRiF' TOWNSEND-CHASTAIN &ASSOC., INC. SCHNEIDER HOMES INC. S k- DEVELOPMENT CONSULTANTS PROjE( PA R K R I DG E EAST LAND SURVEYORS A STREET & STORM DRAINAGE 409 SOUTH 3rd AVENUE KENT, WASHINGTON 98032 --- --- --- DRAWN BY / SCALE / �� = 50 / SHEET 0 CJ (206) 854-2043 APPROVED DATE A4,f /I )/ , / 9 8 (� JOB Q3D76 OF (41 (o - _ t7/_-2 -7? -N w cLV , /v - I /tv a-v