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Home My WebLink AboutR-42780600 CV 6 I 0 W DRAIRAG€ GRATE GRATE FRAME - I }' • i 'k SEJIMENT AlND UFJ311I$ .4i DRAINAGE GRATE - RECTANGULAR GRATE 5H0VlH � FILTERED WATER SEC nON VIEW ISOMETRIC VIEW a Iq Ir MAx, — TRIM r OVERT LOW BY PAS& - BELOW INLET GRATE DEVICE P NOTES 1. &ze the Below Inlet Orate Device (51:0D) for the storm water stWure it will w ice, 2, The $I37D shall have a built - in high -flow system (avadbw bypass}. 3. The retflevat system must iI renToval oFthe BIG without spilling the collected material, 4. Perfo m maintenance In accordance mth Standard Speclficalian o�tl}i srai ;tvctCM (TYP.) PUBUC'+�+ ORIC.S' AT H 13�# 1N FILTER D. �I.A — 18,30 DEPARENT jN� I MA1«O�f 2008 INLET PROTECTION LEVEL BOTTOM 2 2 MAX. MAX. �1 1 12" MIN.\//\ 2)N 2' 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 3H:1V 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 20HAV (OR LESS) 3-5% 300 FEET (10 TO 20)H:1V 5-10% 200 FEET (4 TO 10)HAV 10-25% 100 FEET (2 TO 4)H:1 V 25-50% 50 FEET 2. DESIGN AND INSTALLATION SPECIFICATIONS 2.1. FOR SLOPES STEEPER THAN 2H:1V 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. PUBLIC WORKS DEPARTMENT INTERCEPTOR SWALE INTERCEPTOR SWALE NOT TO SCALE \ L J NOT TO SCALE �TT.� 0 �0 of WAS1q,, l O ��0 mmom Q Q Qom`- TACOMA SEATTLE tl 'ono 97, �� S P O K A N E T R I -CITIES 2 REVISED PER CITY COMMENTS DATED 04/02/24 RI GISTE 1�� 1 REVISED PER CITY COMMENTS DATED 10 25 23 JMT Know what's below. ��s'sIONAL ECG 2215 North 30th Street, Suite 300 Tacoma, WA 98403 / / 253.383.2422 TEL 253.383.2572 FAX www.ahbl.com WEB NO. REVISION BY Call before you dig. 09/10/2024 UNLESS OTHERWISE NOTED, DRAWING IS NOT TO SCALE (NTS) STD. PLAN - 217.10 APPR D: GAZ 9/28/2018 Public Works Administrator DATE TREE PROTECTION MEASURES A. CONSTRUCTION STORAGE PROHIBITED: THE APPLICANT MAY NOT FILL, EXCAVATE, STACK OR STORE ANY EQUIPMENT, DISPOSE OF ANY MATERIALS, SUPPLIES OR FLUIDS, OPERATE ANY EQUIPMENT, INSTALL IMPERVIOUS SURFACES, OR COMPACT THE EARTH IN ANY WAY WITHIN THE AREA DEFINED BY THE DRIP LINE OF ANY TREE TO BE RETAINED. B. FENCED PROTECTION AREA REQUIRED: PRIOR TO DEVELOPMENT ACTIVITIES, THE APPLICANT SHALL ERECT co AND MAINTAIN SIX-FOOT (6) HIGH CHAIN LINK TEMPORARY CONSTRUCTION FENCING AROUND THE DRIP LINES M OF ALL RETAINED TREES OR AT A DISTANCE SURROUNDING THE TREE EQUAL TO ONE AND ONE -QUARTER FEET (1.25') FOR EVERY ONE INCH (1") OF TRUNK CALIPER, WHICHEVER IS GREATER, OR ALONG THE PERIMETER OF A OO TREE PROTECTION TRACT. PLACARDS SHALL BE PLACED ON FENCING EVERY FIFTY FEET (50') INDICATING THE WORDS, "NO TRESPASSING - PROTECTED TREES," OR ON EACH SIDE OF THE FENCING IF LESS THAN FIFTY FEET (� (50'). SITE ACCESS TO INDIVIDUALLY PROTECTED TREES OR GROUPS OF TREES SHALL BE FENCED AND SIGNED. N INDIVIDUAL TREES SHALL BE FENCED ON FOUR (4) SIDES. IN ADDITION, THE APPLICANT SHALL PROVIDE (� SUPERVISION WHENEVER EQUIPMENT OR TRUCKS ARE MOVING NEAR TREES. C. PROTECTION FROM GRADE CHANGES: IF THE GRADE LEVEL ADJOINING TO A TREE TO BE RETAINED IS TO BE RAISED, THE APPLICANT SHALL CONSTRUCT A DRY ROCK WALL OR ROCK WELL AROUND THE TREE. THE DIAMETER OF THIS WALL OR WELL MUST BE EQUAL TO THE TREE'S DRIP LINE. D. IMPERVIOUS SURFACES PROHIBITED WITHIN THE DRIP LINE: THE APPLICANT MAY NOT INSTALL IMPERVIOUS SURFACE MATERIAL WITHIN THE AREA DEFINED BY THE DRIP LINE OF ANY TREE TO BE RETAINED. E. RESTRICTIONS ON GRADING WITHIN THE DRIP LINES OF RETAINED TREES: THE GRADE LEVEL AROUND ANY TREE TO BE RETAINED MAY NOT BE LOWERED WITHIN THE GREATER OF THE FOLLOWING AREAS: (I) THE AREA DEFINED BY THE DRIP LINE OF THE TREE, OR (II) AN AREA AROUND THE TREE EQUAL TO ONE AND ONE-HALF FEET (1-1/2') IN DIAMETER FOR EACH ONE INCH (1") OF TREE CALIPER. A LARGER TREE PROTECTION ZONE BASED ON TREE SIZE, SPECIES, SOIL, OR OTHER CONDITIONS MAY BE REQUIRED. N F. MULCH LAYER REQUIRED: ALL AREAS WITHIN THE REQUIRED FENCING SHALL BE COVERED COMPLETELY AND C)EVENLY WITH A MINIMUM OF THREE INCHES (3") OF BARK MULCH PRIOR TO INSTALLATION OF THE PROTECTIVE C)FENCING. EXCEPTIONS MAY BE APPROVED IF THE MULCH WILL ADVERSELY AFFECT PROTECTED GROUND C)i COVER PLANTS. N G. MONITORING REQUIRED DURING CONSTRUCTION: THE APPLICANT SHALL RETAIN A CERTIFIED ARBORIST OR N LICENSED LANDSCAPE ARCHITECT TO ENSURE TREES ARE PROTECTED FROM DEVELOPMENT ACTIVITIES Q AND/OR TO PRUNE BRANCHES AND ROOTS, FERTILIZE, AND WATER AS APPROPRIATE FOR ANY TREES AND GROUND COVER THAT ARE TO BE RETAINED. _.J TREE PROTECTION NOTES 1. 6-FOOT HIGH TEMPORARY CHAIN LINK FENCE SHALL BE PLACED AT THE DRIPLINE OF THE TREE TO BE SAVED. FENCE SHALL COMPLETELY ENCIRCLE THE TREE(S). INSTALL FENCE POSTS USING PIER BLOCKS ONLY. AVOID DRIVING POSTS OR STAKES INTO MAJOR ROOTS. 2. FOR ROOTS OVER 1-INCH IN DIAMETER THAT ARE DAMAGED DURING CONSTRUCTION, MAKE A CLEAN, STRAIGHT CUT TO REMOVE THE DAMAGED PORTION. ALL EXPOSED ROOTS SHALL BE TEMPORARILY COVERED WITH DAMP BURLAP TO PREVENT DRYING, AND SHALL BE COVERED WITH SOIL AS SOON AS POSSIBLE. 3. WORK WITHIN PROTECTION FENCE SHALL BE DONE MANUALLY. NO STOCKPILING OF MATERIALS, VEHICULAR TRAFFIC, OR STORAGE OF EQUIPMENT OR MACHINERY SHALL BE ALLOWED WITHIN THE LIMIT OF THE FENCING -4. Cane sign per 50 Feet, (rnlnimum of 2 signs) Dripline I ' I f d -� 6 FLTempofary Chain Link Peace � I t -Root Zon ti • � s4�� ' O " 4 ' 1 TRESSPASSING P ROTEC TE D �IFt' TREES TREE PROTECTION NOT TO SCALE R-427806 IN COMPLIANCE WITH CITY OF RENTON STANDARDS SURVEYED: SCALE: VERTICAL: NAVD/ HORIZONTAL: NAD 198383 1991 DATUM • CITY OF RENTON Planning/Building/Public Works Dept. MAPLE HIGHLANDS DS AHBL JOB #2221005.10 TESC NOTES & DETAILS DATE: 9 6 2024 / / DESIGNF�Q� J I / RI FIELDBOOK: PAGE: 9/6/24 DRAWN: GB ONE INCH IF AT FULL SCALE NOT ONE INCH SCALE ACCORDINGLY DRAWING NO: C2.3 �/l6/24 CHECK§K/ MW DATE APPR APPROVED: SHEET: g OF: 39 M C) T C) C) C) N 'i1 R- C2.3