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Home My WebLink AboutR-432614DocuSign Envelope ID: 6EECF5B6-602A-4E4A-B436-A317AA638878 2 2 MAX. LEVEL BOTTOM MAX 1� 12' MIN. f T MIN. SWALE SPACING DEPENDS ON SLOPE GRADIENT NOTES: 1. CONDITIONS OF USE 1.1. REQUIRED AT: 1.1.1. THE TOP OF ALL SLOPES IN EXCESS OF 3HAV AND WITH MORE THAN 20 FEET OF VERTICAL RELIEF. 1.1,2, AT INTERVALS ON ANY SLOPES THAT EXCEEDS THE DIMENSIONS SPECIFIED BELOW. AVERAGE SLOPE SLOPE PERCENT FLOW PATH LENGTH 20H:1 V (OR LESS) 3.5% 300 FEET (10 TO 20)H:1V 5-10% 2D0 FEET (4 TO 10)HA V 10.25% 100 FEET (2 TO 4)HAV 25-50% 50 FEET 2. DESIGN AND INSTALLATION SPECIFICATIONS 2.1. FOR SLOPES STEEPER THAN 2HA V WITH MORE THAN 10 FEET OF VERTICAL RELIEF, BENCHES MAY BE CONSTRUCTED OR CLOSER SPACED INTERCEPTOR SWALES MAY BE USED. THE DESIRED MEASURE MUST BE DESIGNED BY AN ENGINEER TO EFFECTIVELY INTERCEPT THE HIGH VELOCITY RUNOFF TO A SEDIMENT POND OR TRAP. 2.2. CONSTRUCTION TRAFFIC OVER TEMPORARY SWALES SHALL BE MINIMIZED. 3. MAINTENANCE STANDARDS 3.1. DAMAGE RESULTING FROM RUNOFF OR CONSTRUCTION ACTIVITY SHALL BE REPAIRED IMMEDIATELY. 3.2. IF THE FACILITIES DO NOT REGULARLY RETAIN STORM RUNOFF. THE CAPACITY AND/OR FREQUENCY OF THE SWALES SHALL BE INCREASED. UNLESS OTHERWISE NOTED, DRAWING IS NOT TO SCALE (NTS) STD. PLAN - 217.10 `R PDEPARTMENTUBLIC WORKS INTERCEPTOR SWALE PPR D GAZ 9/28/2018 I DATE DocuSign Envelope ID: 6EECF5B6-602A-4E4A-B436-A317AA638878 :45 AN NTS Interceptor Swale 2"x2' 14 GAUGE WIRE, OR EQUIVALENT, IF STANDARD STRENGTH FABRIC USED FILTER FABRIC °1 1 -7777/7 --I�------------I�--� I 6'MAX. I 12" MIN. POST SPACING MAY BE INCREASE I 4 x4' MIN. TRENCH TO 8' IF WIRE BACKING IS USED I I I BACKFILL TRENCH WITH NATIVE SOIL OR 3/4' TO 1-17 WASHED GRAVEL 2'x4' WOOD POSTS, STEEL FENCE POSTS, OR EQUIVALENT (TYP.) NOTES: 1. CONDITIONS OF USE SILT FENCE MAY BE USED DOWNSLOPE OF ALL DISTURBED AREAS. 1.2. SILT FENCE IS NOT INTENDED TO TREAT CONCENTRATED FLOWS, NOR IS IT INTENDED TO TREAT SUBSTANTIAL AMOUNTS OF OVERLAND FLOW. ANY CONCENTRATED FLOW MUST BE CONVEYED THROUGH THE DRAINAGE SYSTEM TO A SEDIMENT TRAP OR POND. 2. DESIGN AND INSTALLATION SPECIFICATIONS 2.1. THE GEOTEXTILE USED MUST MEET THE STANDARD LISTED BELLOW. A COPY OF THE MANUFACTURERS FABRIC SPECIFICATIONS MUST BE AVAILABLE ON SITE. AOS (ASTM D4751) 30-100 SIEVE SIZE (0.60-0.15mm) FOR SILT FILM 50-100 SIEVE SIZE (0.30-0.1 Smm) FOR OTHER FABRICS WATER PERMITTIVITY (ASTM D4491) 0-02 SEC -'MINIMUM GRAB TENSILE STRENGTH (ASTM D4632) 180 LBS. MIN. FOR EXTRA STRENGTH FABRIC 100 LBS. MIN. FOR STANDARD STRENGTH FABRIC GRAB TENSILE ELONGATION (ASTM D4632) 30% MAX. (WOVEN) ULTRAVIOLET RESISTANCE (ASTM D4355) 70%MIN. 2.2. STANDARD STRENGTH FABRIC REQUIRES WIRE BACKING TO INCREASE THE STRENGTH OF THE FENCE. WIRE BACKING OR CLOSER POST SPACING MAY BE REQUIRED FOR EXTRA STRENGTH FABRIC IF FIELD PERFORMANCE WARRANTS A STRONGER FENCE. 2.3. WHERE THE FENCE IS INSTALLED. THE SLOPE SHALL NOT BE STEEPER THAN 2HAV 2.4. IF A TYPICAL SILT FENCE IS USED, THE STANDARD 4"X4• TRENCH MAY BE REDUCED AS LONG AS THE BOTTOM 81NCHES OF THE SILT FENCE FABRIC IS WELL BURIED AND SECURE IN A TRENCH THAT STABILIZES THE FENCE AND DOES NOT ALLOW WATER TO BYPASS OR UNDERMINE THE SILT FENCE. 2.5. FILTER FABRIC FENCES SHALL BE INSTALLED ALONG CONTOURS WHENEVER POSSIBLE. 3. MAINTENANCE STANDARDS 3.1. ANY DAMAGE SHALL BE REPAIRED IMMEDIATELY 3.2. IF CONCENTRATED FLOWS ARE EVIDENT UPHILL OF THE FENCE, THEY MUST BE INTERCEPTED AND CONVEYED TO A SEDIMENT TRAP OR POND. 3.3. IT IS IMPORTANT TO CHECK THE UPHILL SIDE OF THE FENCE FOR SIGNS OF THE FENCE CLOGGING AND ACTING AS A BARRIER TO FLOW AND THEN CAUSING CHANNELIZATION OF FLOWS PARALLEL TO THE FENCE. IF THIS OCCURS, REPLACE THE FENCE OR REMOVE THE TRAPPED SEDIMENT. 3.4. SEDIMENT MUST BE REMOVED WHEN SEDIMENT IS 61NCHES HIGH. 3.5. IF THE FILTER FABRIC (GEOTEXTILE) HAS DETERIORATED DUE TO ULTRAVIOLET BREAKDOWN. IT SHALL BE REPLACED. UNLESS OTHERWISE NOTED. DRAWING IS NOT TO SCALE (NTS) STD. PLAN - 214.00 ♦�}� PUBLIC WORKS SILT FENCE GAZ 9/28/201VR8 1 � DEPARTMENT var�w,n.,4...mea DATE :45 An NTS— -( 9 Silt Fence WIRE FENCE 10' TO STEEL POST _ _ CLIP FENCE TO WIRE STEEL FENCE POST TENSAR GS-1 SAFETY FENCE OR EQUAL GALVANIZED WIRE OR OTHER APPROVED MATERIAL NTS Clearing Limits Fence TREE PROTECTION ZONE (TPZ) FENCE DETAIL PROTECTION MEASURES DURING CONSTRUCTION: BULDINO gN&ON 1. Chain link fencing is required around the drip line of APPROVED trees required to be retained, or around required tree protection tracts/easements. Arm 2. The fence shall be a minimum of 6-feet high. 3. Steel posts shall be driven at a depth to ensure the fence remains in an upright position for the duration of the development. 4. Tree protection signage shall be placed at intervals of nomore than 20-feet along the entire fence. See link below for signage specifications. S S. Storage, fill, excavation, earth compaction, or dumping of liquids or materials is prohibited in fenced area. 6. Utilities or impervious surface installation is prohibited REQUIRED 6 FOOT SIGNAGE 1 CHAIN LINK within the tree drip line. FENCE 7. Grade changes are prohibited within the tree drip line. 8. Removal of the existing vegetation within the drip line of TREE protected trees is prohibited. PROTECTION 9. All areas within the required fencing shall be covered SIGNAGE evenlywith a minimum of 3-inches of bark mulch, except in areas where mulch will adversely affect protected ) ground cover plants. 10. For protected trees subject to a land use decision, the applicant shall retain an ISA certified arborist or ASCA UNDISTURBED MAINTAIN VEGETATION certified consultant to supervise fence installation, DRIVEN EXISTING WITH 3-INCHES monitor tree health, and prune trees. STEEL POSTS MULCH GRADE Planning Division LINK TO REQUIRED �' 11,E CITY,OF Renton ® South Grady Way :...: TREE PROTECTION Rent r Renton, WA 98057 425-430-7200 1 www.rentonwagov SIGNAGE: NTS 10 Tree Protection Fence 460 / 4' VERTI 440 420 MATCH EXISTING 1 � 3 480 500 EXISTING GRADE 460 480 CUT SLOPE 4' VERTICAL CUT 440 460 - SEEPAGE C314 FOR DETENTION VAULT D ETA I LS 420 1"=20' 3 Section A WATER LEVEL -J WATER LEVEL _ _TT�_ 500 GRAVEL BASE 460 SOFTBALL DETENTION EXCAVATION SECTION SCALE: 1" = 20' 6"=12" PERFORATE PIPE AS NECESSARY `TOP OF PIPE SHALL BE / 6" MIN ABOVE GRADE NAATllI I r-VIC-TINI/1 PROVIDE 12" MIN WASHED ROCK AROUND PERIMETER OF PIPE WRAP WITH PERMEABLE FILTER FABRIC 55 GALLON DRUM W/ 2" DIA WEEP HOLES OR APPROVED EQUAL WIRE TIES SUMP PUMP AND MOTOR CONCRETE BLOCKS 1"=20' 4 Section B 1 3 NTS Temporary Sump and Pump R-432614 IN COMPLIANCE WITH CITY OF RENTON STANDARDS LDEVELOPMENT ENGINEERING msippo 08/07/2025 � "7' SURVEYED: SCALE: HORIZONTAL: AD 1198E CITY OF HAZEN HIGH SCHOOL MODERNIZATION �T07.11.2025 HORIZONTAL: NAD 1983/1991 w DESIGNED:JAJ N/A FIELDBOOK: DRAWN: RENTON PAGE: DJD/AJJ ONE INCH A DRAWING N0: s6�,g�� ti CHECKED: DATUM JAJ AT FULL SCALE Planning/Building/Public Works Dept. TESL DETAILS C 1 11 IF NOT ONE INCH L �D: SHEET: OF: APPROVESCALE ACCORDINGLY /)5/29/2/lZ5 N0. REVISION BY DATE APPR JAJ 14 OF 7 T N O N u M C) N Q J co C) O O N