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HomeMy WebLinkAboutR-398802NE 1/4OFS32, T23 N, R5 E, W.M. 00 rn I 0 W U O 0 S W J m I In 3 0 W Ld I- 00 0 CO zz W m a 0 0 `1 U Z W m z 0 z W z z 0 Z a vi LU zz J lL TREE PROTECTION NOTES SURFACE WATER STANDARD PLAN NOTES PROTECTION MEASURES DURING CONSTRUCTION: PROTECTION MEASURES IN THIS SUBSECTION SHALL APPLY FOR ALL TREES THAT 1. ARE TO BE RETAINED. ALL OF THE FOLLOWING TREE PROTECTION MEASURES SHALL APPLY: 2. 1. 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 3. THE EARTH IN ANY WAY WITHIN THE AREA DEFINED BY THE DRIP LINE OF ANY TREE TO BE RETAINED. 2. FENCED PROTECTION AREA REQUIRED: PRIOR TO DEVELOPMENT ACTIVITIES, THE APPLICANT SHALL ERECT AND MAINTAIN SIX-FOOT (6') HIGH CHAIN LINK TEMPORARY CONSTRUCTION FENCING AROUND THE DRIP LINES 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 TREE PROTECTION TRACT. PLACARDS SHALL BE PLACED ON FENCING EVERY FIFTY FEET (50') INDICATING THE WORDS, 'NO TRESPASSING -PROTECTED TREES,"OR ON EACH 4. 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. INDIVIDUAL TREES SHALL BE FENCED ON FOUR (4) SIDES. IN ADDITION, THE APPLICANT SHALL PROVIDE SUPERVISION WHENEVER EQUIPMENT OR TRUCKS ARE MOVING NEAR TREES. 3. 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 5• WELL MUST BE EQUAL TO THE TREES DRIP LINE. 6• 4. 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. 7. 5. 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: (1) THE AREA DEFINED BY THE DRIP LINE 8. 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. (ORD. 5676, 12-3-2012) 9' 6. MULCH LAYER REQUIRED: ALL AREAS WITHIN THE REQUIRED FENCING SHALL BE COVERED COMPLETELY AND EVENLY WITH A 10. MINIMUM OF THREE INCHES (3") OF BARK MULCH PRIOR TO INSTALLATION OF THE PROTECTIVE FENCING. EXCEPTIONS MAY BE APPROVED IF THE MULCH WILL ADVERSELY AFFECT PROTECTED GROUND COVER PLANTS. (ORD. 5676, 12-3-2012) 11. 7. MONITORING REQUIRED DURING CONSTRUCTION: THE APPLICANT SHALL RETAIN A CERTIFIED ARBORIST OR LICENSED LANDSCAPE ARCHITECT TO ENSURE TREES ARE PROTECTED FROM DEVELOPMENT ACTIVITIES AND/OR TO PRUNE BRANCHES 12. AND ROOTS, FERTILIZE, AND WATER AS APPROPRIATE FOR ANY TREES AND GROUND COVER THAT ARE TO BE RETAINED. 8. ALTERNATIVE PROTECTION: ALTERNATIVE SAFEGUARDS MAY BE USED IF DETERMINED TO PROVIDE EQUAL OR GREATER TREE PROTECTION. (ORD. 5676, 12-3-2012) 13. EROSION CONTROL NOTES 14• 1. THESE NOTES SHALL APPEAR FOR ALL PROJECTS - SITE IMPROVEMENTS, SURFACE WATER UTILITY, 15. WASTEWATER UTILITY, WATER UTILITY, AND TRANSPORTATION PLANS: 2. BEFORE ANY CONSTRUCTION OR DEVELOPMENT ACTIVITY OCCURS, A PRE -CONSTRUCTION MEETING MUST BE HELD WITH THE CITY OF RENTON, PUBLIC WORKS DESIGN ENGINEER. 3. THE BOUNDARIES OF THE CLEARING LIMITS AND AREAS OF VEGETATION PRESERVATION AS PRESCRIBED ON THE PLAN(S) SHALL BE CLEARLY FLAGGED BY SURVEY TAPE OR FENCING IN THE FIELD PRIOR TO CONSTRUCTION IN ACCORDANCE WITH 16. APPENDIX D OF THE SURFACE WATER DESIGN MANUAL AND OBSERVED DURING CONSTRUCTION. DURING THE CONSTRUCTION 17. PERIOD, NO DISTURBANCE BEYOND THE CLEARING LIMITS SHALL BE PERMITTED. THE CLEARING LIMITS SHALL BE MAINTAINED BY THE APPLICANT/ESC SUPERVISOR FOR THE DURATION OF CONSTRUCTION. 18. 4. STABILIZED CONSTRUCTION ENTRANCES SHALL BE INSTALLED AT THE BEGINNING OF CONSTRUCTION AND MAINTAINED FOR THE DURATION OF THE PROJECT. ADDITIONAL MEASURES, SUCH AS CONSTRUCTED WHEEL WASH SYSTEMS OR WASH PADS, 19. MAY BE REQUIRED TO ENSURE THAT ALL PAVED AREAS ARE KEPT CLEAN AND TRACK OUT TO ROAD RIGHT OF WAY DOES 20. NOT OCCUR FOR THE DURATION OF THE PROJECT. 5. ALL REQUIRED SEDIMENTATION/EROSION CONTROL FACILITIES MUST BE CONSTRUCTED AND IN OPERATION PRIOR TO LAND CLEARING AND/OR CONSTRUCTION TO PREVENT TRANSPORTATION OF SEDIMENT TO SURFACE WATER, DRAINAGE SYSTEMS AND ADJACENT PROPERTIES. ALL EROSION AND SEDIMENT FACILITIES SHALL BE MAINTAINED IN A SATISFACTORY CONDITION UNTIL SUCH TIME THAT CLEARING AND/OR CONSTRUCTION IS COMPLETE AND POTENTIAL FOR ON -SITE EROSION HAS PASSED THE IMPLEMENTATION, MAINTENANCE, REPLACEMENT AND ADDITIONS TO EROSION/SEDIMENTATION CONTROL SYSTEMS SHALL BE THE RESPONSIBILITY OF THE PERMITEE. 21. 6. THE EROSION AND SEDIMENTATION CONTROL SYSTEMS DEPICTED ON THIS DRAWING ARE INTENDED TO BE MINIMUM REQUIREMENTS TO MEET ANTICIPATED SITE CONDITIONS. AS CONSTRUCTION PROGRESSES AND UNEXPECTED OR SEASONAL CONDITIONS DICTATE, THE PERMITEE SHALL ANTICIPATE THAT MORE EROSION AND SEDIMENTATION CONTROL FACILITIES WILL 22. BE NECESSARY TO ENSURE COMPLETE SILTATION CONTROL ON THE PROPOSED SITE. DURING THE COURSE OF CONSTRUCTION, IT SHALL BE THE OBLIGATION AND RESPONSIBILITY OF THE PERMITEE TO ADDRESS ANY NEW CONDITIONS THAT MAY BE CREATED BY THE ACTIVITIES AND TO PROVIDE ADDITIONAL FACILITIES, OVER AND ABOVE MINIMUM REQUIREMENTS, AS MAY BE NEEDED, TO PROTECT ADJACENT PROPERTIES AND WATER QUALITY OF THE RECEIVING DRAINAGE SYSTEM. 7. APPROVAL OF THIS PLAN IS FOR EROSION/SEDIMENTATION CONTROL ONLY. IT DOES NOT CONSTITUTE AN APPROVAL OF STORM DRAINAGE DESIGN, SIZE NOR LOCATION OF PIPES, RESTRICTORS, CHANNELS, OR RETENTION FACILITIES. 8. ANY AREAS OF EXPOSED SOILS, INCLUDING ROADWAY EMBANKMENTS, THAT WILL NOT BE DISTURBED FOR TWO DAYS DURING THE WET SEASON (OCTOBER 1ST TROUGH MARCH 30 OR SEVEN DAYS DURING THE DRY SEASON (APRIL 1ST TOUGH SEPTEMBER 30) SHALL BE IMMEDIATELY STABILIZED WITH THE APPROVED ESC COVER METHODS (E.G., SEEDING, MULCHING, PLASTIC COVERING, ETC.). 9. WET SEASON SEASONAL EROSION AND SEDIMENT CONTROL REQUIREMENTS APPLY TO ALL CONSTRUCTION SITES CLEARING BETWEEN OCTOBER 1 AND MARCH 30 INCLUSIVE, UNLESS OTHERWISE APPROVED BY THE CITY THROUGH AN ADJUSTMENT PROCESS. 10. COVER MEASURES WILL BE APPLIED IN CONFORMANCE WITH APPENDIX D OF THE SURFACE WATER DESIGN MANUAL. 11. ANY AREA NEEDING ESC MEASURES, NOT REQUIRING IMMEDIATE ATTENTION, SHALL BE ADDRESSED WITHIN SEVEN (7) DAYS. 12. THE ESC FACILITIES ON INACTIVE SITES SHALL BE INSPECTED AND MAINTAINED A MINIMUM OF ONCE A MONTH OR WITHIN 24 HOURS FOLLOWING A STORM EVENT. 13. AT NO TIME SHALL MORE THAN ONE (1) FOOT OF SEDIMENT BE ALLOWED TO ACCUMULATE WITHIN A CATCH BASIN. ALL CATCH BASINS AND CONVEYANCE LINES SHALL BE CLEANED PRIOR TO PAVING. THE CLEANING OPERATION SHALL NOT 23• FLUSH SEDIMENT -LADEN WATER INTO THE DOWNSTREAM SYSTEM. 14. DURING THE TIME PERIOD OF OCTOBER 1ST THROUGH MARCH 30TH, ALL PROJECT DISTRIBUTED SOIL AREAS GREATER, THAT ARE TO BE LEFT UN -WORKED FOR MORE THAN 12 HOURS, SHALL BE COVERED BY MULCH, SODDING 24• OR PLASTIC COVERING. 25. 15. ANY PERMANENT RETENTION/DETENTION FACILITY USED AS A TEMPORARY SETTLING BASIN SHALL BE MODIFIED WITH THE NECESSARY EROSION CONTROL MEASURES AND SHALL PROVIDE ADEQUATE STORAGE CAPACITY. IF THE PERMANENT FACILITY IS TO FUNCTION ULTIMATELY AS AN INFILTRATION SYSTEM, THE TEMPORARY FACILITY MUST BE ROUGH GRADED SO THAT THE BOTTOM AND SIDES ARE AT LEAST THREE FEET ABOVE THE FINAL GRADE OF THE PERMANENT FACILITY. 26. 16. PRIOR TO THE BEGINNING OF THE WET SEASON (OCT. 1), ALL DISTURBED AREAS SHALL BE REVIEWED TO IDENTIFY WHICH ONES CAN BE SEEDED IN PREPARATION FOR THE WINTER RAINS. DISTURBED AREAS SHALL BE SEEDED WITHIN ONE WEEK OF THE BEGINNING OF THE WET SEASON. A SKETCH MAP OF THOSE AREAS TO BE SEEDED AND THOSE AREAS TO REMAIN UNCOVERED SHALL BE SUBMITTED TO THE CITY OF RENTON FOR REVIEW. PA 1505 Westlake Ave. N. Suite 305 Seattle, WA 98109 T (206) 522-9510 F (206)522-8344 WWW. PAcLAND.COM 27. THESE NOTES SHALL APPEAR ON PROJECTS FOR THE SURFACE WATER UTILITY. BEFORE ANY CONSTRUCTION OR DEVELOPMENT ACTIVITY OCCURS, A PRE -CONSTRUCTION MEETING MUST BE HELD BETWEEN THE CITY OF RENTON PLAN REVIEW SECTION AND THE APPLICANT. ALL DESIGN AND CONSTRUCTION SHALL BE IN ACCORDANCE WITH THE RENTON MUNICIPAL CODE (RMC), THE LATEST EDITION OF THE STANDARD SPECIFICATIONS FOR ROAD, BRIDGE AND MUNICIPAL CONSTRUCTION PREPARED BY WSDOT AND THE AMERICAN PUBLIC WORKS ASSOCIATION (APWA), AS AMENDED BY THE CITY OF RENTON PUBLIC WORKS DEPARTMENT. IT SHALL BE THE SOLE RESPONSIBILITY OF THE APPLICANT AND THE PROFESSIONAL CIVIL ENGINEER TO CORRECT ANY ERROR, OMISSION OR VARIATION FROM THE ABOVE REQUIREMENTS FOUND IN THIS PLANS. ALL CORRECTIONS SHALL BE AT NO ADDITIONAL COST TO THE CITY. APPROVAL OF THIS ROAD, GRADING, PARKING AND DRAINAGE PLAN DOES NOT CONSTITUTE AN APPROVAL OF ANY OTHER CONSTRUCTION (E.G. DOMESTIC WATER CONVEYANCE, SEWER CONVEYANCE, GAS, ELECTRICAL. ETC.)THE SURFACE WATER DRAINAGE SYSTEM SHALL BE CONSTRUCTED ACCORDING TO THE APPROVED PLANS, WHICH ARE ON FILE IN WITH THE CITY. ANY DEVIATION FROM THE APPROVED PLANS WILL REQUIRE WRITTEN APPROVAL FROM THE CITY OF RENTON PUBLIC WORKS DEPARTMENT, SURFACE WATER UTILITY SECTION. A COPY OF THESE APPROVED PLANS MUST BE ON THE JOB SITE WHENEVER CONSTRUCTION IS IN PROGRESS. GRADING ACTIVITIES (SITE ALTERATION) ARE LIMITED TO THE HOURS OF 7 A.M. TO 7 P.M. MONDAY THROUGH SATURDAY AND NO WORK ON SUNDAY IS ALLOWED, UNLESS OTHERWISE APPROVED WITH A WRITTEN DECISION BY THE CITY OF RENTON. IT SHALL BE THE APPLICANT'S/CONTRACTOR'S RESPONSIBILITY TO OBTAIN ALL CONSTRUCTION EASEMENTS NECESSARY BEFORE INITIATING OFF -SITE WORK. EASEMENTS REQUIRE CITY REVIEW AND APPROVAL PRIOR TO CONSTRUCTION. FRANCHISED UTILITIES OR OTHER INSTALLATIONS THAT ARE NOT SHOWN ON THESE APPROVED PLANS SHALL NOT BE CONSTRUCTED UNLESS AN APPROVED SET OF PLANS THAT MEET ALL REQUIREMENTS OF CHAPTER 4 OF THE SURFACE WATER DESIGN MANUAL ARE SUBMITTED TO THE CITY OF RENTON. DATUM SHALL BE NAVD 88 UNLESS OTHERWISE APPROVED BY THE CITY OF RENTON. REFERENCE BENCHMARK AND ELEVATIONS ARE NOTED ON THE PLANS. ANY DEWATERING SYSTEM NECESSARY FOR THE CONSTRUCTION OF STORMWATER FACILITIES MUST BE SUBMITTED TO THE CITY FOR REVIEW AND APPROVAL. ALL UTILITY TRENCHES AND ROADWAY SUBGRADE SHALL BE BACKFILLED AND COMPACTED TO 95 PERCENT DENSITY, STANDARD PROCTOR. OPEN CUTTING OF EXISTING ROADWAYS FOR NON -FRANCHISED UTILITY OR STORM DRAINAGE WORK IS NOT ALLOWED UNLESS SPECIFICALLY APPROVED BY THE CITY OF RENTON AND NOTED ON THESE APPROVED PLANS. ANY OPEN CUT SHALL BE RESTORED IN ACCORDANCE WITH THE CITY OF RENTON TRENCH RESTORATION STANDARDS. ALL SEDIMENTATION/EROSION FACILITIES MUST BE IN OPERATION PRIOR TO CLEARING AND BUILDING CONSTRUCTION, AND THEY MUST BE SATISFACTORILY MAINTAINED UNTIL CONSTRUCTION IS COMPLETED AND THE POTENTIAL FOR ON -SITE EROSION HAS PASSED. ALL RETENTION/DETENTION FACILITIES MUST BE INSTALLED AND IN OPERATION PRIOR TO OR IN CONJUNCTION WITH ALL CONSTRUCTION ACTIVITY UNLESS OTHERWISE APPROVED BY THE PUBLIC WORKS DEPARTMENT, SURFACE WATER UTILITY SECTION. ALL PIPE AND APPURTENANCES SHALL BE LAID ON A PROPERLY PREPARED FOUNDATION IN ACCORDANCE WITH THE CURRENT STATE OF WASHINGTON STANDARD SPECIFICATION FOR ROAD AND BRIDGE CONSTRUCTION. 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. ALL PIPE BEDDING SHALL BE APWA CLASS "C", WITH THE EXCEPTION OF PVC PIPE. STEEL PIPE SHALL BE ALUMINIZED, OR GALVANIZED WITH ASPHALT TREATMENT #1 OR BETTER INSIDE AND OUTSIDE. ALL DRAINAGE STRUCTURES, SUCH AS CATCH BASINS AND MANHOLES SHALL HAVE SOLID LOCKING LIDS. ALL DRAINAGE STRUCTURES ASSOCIATED WITH A PERMANENT RETENTION/DETENTION FACILITY SHALL HAVE SOLID LOCKING LIDS. BUILDING AND OTHER STRUCTURES SHALL BE PLACED IN ACCORDANCE WITH TABLE 4.1 EASEMENT WIDTHS AND BUILDING SETBACKS LINES. ALL CATCH BASIN GRATES SHALL BE DEPRESSED 0.10 FEET BELOW PAVEMENT LEVEL. ALL DRIVEWAY CULVERTS LOCATED WITHIN CITY OF RENTON RIGHT-OF-WAY SHALL BE OF SUFFICIENT LENGTH TO PROVIDE A MINIMUM 3:1 SLOPE FROM THE EDGE OF THE DRIVEWAY TO THE BOTTOM OF THE DITCH. ROCK FOR EROSION PROTECTION OF ROADSIDE DITCHES, WHERE REQUIRED, SHALL BE OF SOUND QUARRY ROCK PLACED TO A DEPTH OF ONE (1) FOOT AND MUST MEET THE FOLLOWING SPECIFICATIONS: 4 - 8 INCH ROCK / 40 - 70% PASSING; 2 - 4 INCH ROCK / 30 - 40% PASSING; AND LESS THAN 2 INCH ROCK / 10 - 20% PASSING. ALL BUILDING DOWNSPOUTS AND FOOTING DRAINS SHALL BE CONNECTED TO THE STORM DRAINAGE SYSTEM, UNLESS APPROVED BY THE CITY PLAN REVIEWER OR SURFACE WATER UTILITY SECTION. AN ACCURATELY DIMENSIONED, CERTIFIED AS -BUILT DRAWING OF THIS DRAINAGE SYSTEM WILL BE SUBMITTED TO THE CITY UPON COMPLETION. DRAINAGE OUTLETS (STUB -OUTS) SHALL BE PROVIDED FOR EACH INDIVIDUAL LOT, EXCEPT FOR THOSE LOTS APPROVED FOR INFILTRATION BY THE CITY. STUB -OUTS SHALL CONFORM TO THE FOLLOWING: A. EACH OUTLET SHALL BE SUITABLY LOCATED AT THE LOWEST ELEVATION ON THE LOT, SO AS TO SERVICE ALL FUTURE ROOF DOWNSPOUTS AND FOOTING DRAINS, DRIVEWAYS, YARD DRAINS, AND ANY OTHER SURFACE OR SUBSURFACE DRAINS NECESSARY TO RENDER THE LOTS SUITABLE FOR THEIR INTENDED USE. EACH OUTLET SHALL HAVE FREE -FLOWING, POSITIVE DRAINAGE TO AN APPROVED STORMWATER CONVEYANCE SYSTEM OR TO AN APPROVED OUTFALL LOCATION. B. OUTLETS ON EACH LOT SHALL BE LOCATED WITH A FIVE -FOOT -HIGH, 2" X 4" STAKE MARKED "STORM" OR "DRAIN". THE STUB -OUT SHALL EXTEND ABOVE SURFACE LEVEL, BE VISIBLE, AND BE SECURED TO THE STAKE. C. PIPE MATERIAL SHALL CONFORM TO UNDERDRAIN SPECIFICATIONS DESCRIBED IN CHAPTER 4 OF THE SURFACE WATER DESIGN MANUAL AND, IF NON-METALLIC, THE PIPE SHALL BE PLACED IN A TRENCH WITH A TRACING WIRE ABOVE OR OTHER ACCEPTABLE DETECTION. D. PRIVATE DRAINAGE EASEMENTS ARE REQUIRED FOR DRAINAGE SYSTEMS DESIGNED TO CONVEY FLOWS THROUGH INDIVIDUAL LOTS. E. THE APPLICANT/CONTRACTOR IS RESPONSIBLE FOR COORDINATING THE LOCATIONS OF ALL STUB -OUT CONVEYANCE LINES WITH RESPECT TO OTHER UTILITIES (E.G. POWER, GAS, TELEPHONE, TELEVISION). F. ALL INDIVIDUAL STUB -OUTS SHALL BE PRIVATELY OWNED AND MAINTAINED BY THE LOT HOME OWNER. G. STORM DRAINAGE PIPE SYSTEMS SHALL NOT PENETRATE BUILDING FOUNDATIONS, EXCEPT FOR SUMP PUMP DISCHARGE LINES USED TO DRAIN CRAWL SPACES, PROVIDED THE SUMP PUMP SYSTEM INCLUDES BACKFLOW PREVENTION OR A CHECK VALVE. ALL DISTURBED PERVIOUS AREAS (COMPACTED, GRADED, LANDSCAPED, ETC.) OF THE DEVELOPMENT SITE MUST DEMONSTRATE ONE OF THE FOLLOWING: THE EXISTING DUFF LAYER SHALL BE STAGED AND REDISTRIBUTED TO MAINTAIN THE MOISTURE CAPACITY OF THE SOIL, OR; AMENDED SOIL SHALL BE ADDED TO MAINTAIN THE MOISTURE CAPACITY. PROOF OF LIABILITY INSURANCE SHALL BE SUBMITTED TO THE CITY PRIOR TO CONSTRUCTION PERMIT ISSUANCE. ISSUANCE OF THE BUILDING OR CONSTRUCTION PERMITS BY THE CITY OF RENTON DOES NOT RELIEVE THE OWNER OF THE CONTINUING LEGAL OBLIGATION AND/OR LIABILITY CONNECTED WITH STORM SURFACE WATER DISPOSITION. FURTHER, THE CITY OF RENTON DOES NOT ACCEPT ANY OBLIGATION FOR THE PROPER FUNCTIONING AND MAINTENANCE OF THE SYSTEM PROVIDED DURING CONSTRUCTION. THE CONTRACTOR SHALL BE RESPONSIBLE FOR PROVIDING ADEQUATE SAFEGUARD, SAFETY DEVICES, PROTECTIVE EQUIPMENT, FLAGGERS, AND ANY OTHER NEEDED ACTIONS TO PROTECT THE LIFE, HEALTH, AND SAFETY OF THE PUBLIC, AND TO PROTECT PROPERTY IN CONNECTION WITH THE PERFORMANCE OF WORK. ANY WORK WITHIN THE TRAVELED RIGHT-OF-WAY THAT MAY INTERRUPT NORMAL TRAFFIC FLOW SHALL REQUIRE A TRAFFIC CONTROL PLAN APPROVE BY THE PUBLIC WORKS DEPARTMENT, TRANSPORTATION SYSTEMS DIVISION. ALL SECTIONS OF THE WSDOT STANDARD SPECIFICATIONS 1-07-23 TRAFFIC CONTROL SHALL APPLY. PROJECT LOCATED WITHIN THE AQUIFER PROTECTION AREA (APA) SHALL COMPLY WITH SPECIAL REQUIREMENT #6 OF THE SURFACE WATER DESIGN MANUAL AND AQUIFER PROTECTION REGULATIONS (RMC 4-3-050). cj A A c c�' SURVEYED: WRH DESIGNED: LRR A 48855 DRAWN: CMD os, �SSIONis TEg�'� CHECKED ly��' F��1 AL : FF W NO. REVISION BY DATE APPR APPROVED: CONDITIONS OF APPROVAL WATER 1. THE APPLICANT SHALL PROVIDE A WATER AVAILABILITY CERTIFICATE FROM SOOS CREEK WATER AND SEWER DISTRICT. THE WATER AVAILABILITY CERTIFICATE SHOULD INCLUDE THE INFORMATION THAT THE FIRE FLOW REQUIREMENT OF THE RENTON FIRE DEPARTMENT FOR THIS PROJECT IS AVAILABLE. A COPY OF THE APPROVED WATER PLAN FROM SOOS CREEK WATER AND SEWER DISTRICT SHALL BE PROVIDED TO THE CITY PRIOR TO APPROVAL OF THE CIVIL CONSTRUCTION PERMIT. SEWER 1. THE APPLICANT SHALL PROVIDE A SEWER AVAILABILITY CERTIFICATE FROM SOOS CREEK WATER AND SEWER DISTRICT. A COPY OF THE APPROVED SEWER PLAN FROM SOOS CREEK WATER AND SEWER DISTRICT SHALL BE PROVIDED TO THE CITY PRIOR TO APPROVAL OF THE CIVIL CONSTRUCTION PERMIT. SURFACE WATER 1. A GEOTECHNICAL REPORT, DATED APRIL 11, 2017, COMPLETED BY GEOTECH CONSULTANTS, INC FOR THE SITE HAS BEEN PROVIDED. THE SUBMITTED REPORT DESCRIBES THE SITE IS A LOW EROSION HAZARD AREA. EROSION CONTROL MEASURES WILL NEED TO BE IN PLACE PRIOR TO STARTING GRADING ACTIVITIES ON THE SITE. THE REPORT DISCUSSES THE SOIL AND GROUNDWATER CHARACTERISTICS OF THE SITE PROVIDE RECOMMENDATIONS FOR PROJECT DESIGN AND CONSTRUCTION. GEOTECHNICAL RECOMMENDATIONS PRESENTED NEED TO BE ADDRESS WITHIN THE PROJECT PLANS. 1.1. AN INFILTRATION TEST ON SITE SHALL BE PERFORMED IN ACCORDANCE WITH SECTION 5.2.1 OF THE RSWDM AS THE PROJECT PROPOSES TO USE THE LOW IMPACT DEVELOPMENT PERFORMANCE STANDARD IDENTIFIED IN SECTION 1.2.9.1.B. 2. A PRELIMINARY DRAINAGE PLAN AND TECHNICAL INFORMATION REPORT (TIR), DATED MAY 2017, WAS SUBMITTED BY PACLAND WITH THE LAND USE APPLICATION. BASED ON THE CITY OF RENTON'S FLOW CONTROL MAP, THE SITE FALLS WITHIN THE FLOW CONTROL DURATION STANDARD AREA MATCHING FORESTED SITE CONDITIONS AND IS WITHIN THE BLACK RIVER DRAINAGE BASIN. THE DEVELOPMENT IS SUBJECT TO FULL DRAINAGE REVIEW IN ACCORDANCE WITH THE 2017 CITY OF RENTON SURFACE WATER DESIGN MANUAL (RSWDM). ALL CORE REQUIREMENTS AND THE SIX SPECIAL REQUIREMENTS ARE DISCUSSED IN THE TECHNICAL INFORMATION REPORT. THE FOLLOWING STORMWATER IMPROVEMENTS ARE REQUIRED AND SHALL BE DISCUSSED WITHIN THE TIR: 2.1. APPLICANT SHALL SUBMIT AN UPDATED BOND QUANTITY WORKSHEET USING THE CITY OF RENTON'S WORKSHEET WITH THE REVISED TIR TO BE SUBMITTED WITH THE CIVIL CONSTRUCTION PERMIT APPLICATION. 3. THE DEVELOPMENT IS REQUIRED TO PROVIDE ENHANCED WATER QUALITY TREATMENT PRIOR TO DISCHARGE. PROJECT WATER QUALITY TREATMENT WILL CONSIST OF CONVEYANCE TO A MODULAR WETLAND SYSTEM PRECEDING THE PROPOSED DETENTION SYSTEM PRIOR TO CONNECTION TO THE EXISTING 24-INCH CONCRETE STORMWATER MAIN LOCATED IN 108TH AVE SE. 3.1. PRESETTLING SHALL BE PROVIDED PER SECTION 6.5.1 OF THE 2017 RSWDM. 4. ANY PROPOSED DETENTION AND/OR WATER QUALITY VAULT SHALL BE DESIGNED IN ACCORDANCE WITH THE RSWDM THAT IS CURRENT AT THE TIME OF CONSTRUCTION PERMIT APPLICATION. SEPARATE STRUCTURAL PLANS WILL BE REQUIRED TO BE SUBMITTED FOR REVIEW AND APPROVAL UNDER A SEPARATE BUILDING PERMIT FOR THE DETENTION AND/OR WATER QUALITY VAULT. 4.1. THE USE OF THE PROPOSED OLDCASTLE STORMCAPTURE DETENTION VAULTS REQUIRES THE APPLICANT TO SUBMIT AN ADJUSTMENT REQUEST IN ACCORDANCE WITH SECTION 1.4.5 OF THE CITY AMENDMENTS TO THE 2017 RSWDM AS IT DOES NOT MEET THE HEIGHT REQUIREMENTS IDENTIFIED IN SECTION 5.1.3 OF THE RSWDM. 5. APPROPRIATE ON-BMPS WILL BE REQUIRED TO HELP MITIGATE THE NEW RUNOFF CREATED BY THIS DEVELOPMENT. THE SUBMITTED APPLICATION PROPOSES TO USE THE PERFORMANCE STANDARD NOTED IN SECTION 1.2.9.1.E OF THE RSWDM IN ORDER TO COMBINE BOTH THE FLOW CONTROL REQUIREMENT (CORE REQUIREMENT #3) AND THE ON -SITE BMP REQUIREMENT (CORE REQUIREMENT #9) INTO ONE FACILITY. PERFORMANCE STANDARDS ARE THE STORMWATER DISCHARGE SHALL MATCH DEVELOPMENT DURATIONS TO PRE- DEVELOPEDDU RATIONS FOR THE RANGE OF PRE -DEVELOPED DISCHARGE RATES FROM 8% OF THE 2-YEAR PEAK FLOW TO 50% OF THE 2-YEAR PEAK FLOW. THE FINAL DRAINAGE PLAN AND DRAINAGE REPORT MUST BE SUBMITTED WITH THE CIVIL CONSTRUCTION PERMIT APPLICATION. 5.1. TECHNICAL INFORMATION REPORT SUBMITTED WITH THE CIVIL CONSTRUCTION PERMIT APPLICATION SHALL PROVIDE FACILITY SIZING CALCULATIONS SHOWING THAT THE PERFORMANCE STANDARDS HAVE BEEN MEET BY THE PROPOSED FACILITY. PRELIMINARY DRAINAGE REPORT ONLY SHOWS COMPLIANCE WITH 50% OF THE 2-YEAR PEAK FLOW TO 50% OF THE 2-YEAR PEAK FLOW. 5.2. IMPLEMENTATION OF THE ON -SITE BMPS SHALL BE IN ACCORDANCE WITH 1.2.9.1.D. 6. SURFACE WATER SYSTEM DEVELOPMENT FEE IS $0.641 PER SQUARE FOOT OF NEW IMPERVIOUS SURFACE, BUT NOT LESS THAN $1,608.00. THIS IS PAYABLE PRIOR TO ISSUANCE OF THE CIVIL CONSTRUCTION PERMIT. TRANSPORTATION 1. THE PROPOSED DEVELOPMENT FRONTS 108TH AVE SE (SR-515) ALONG THE WEST PROPERTY LINES. 108TH AVE SE IS CLASSIFIED AS A PRINCIPAL ARTERIAL ROAD. EXISTING RIGHT-OF-WAY WIDTH IN 108TH AVE SE IS APPROXIMATELY 95 FEET. 108TH AVE SE (SR 515) IS CLASSIFIED AS PRINCIPAL ARTERIAL. MINIMUM RIGHT-OF-WAY FOR THIS STREET DESIGNATION IS 113 FT. TO MEET THE CITY'S COMPLETE STREET STANDARDS, STREET IMPROVEMENTS INCLUDING A PAVEMENT WIDTH OF 76-FEET, A 0.5-FOOT CURB, AN 8-FOOT PLANTING STRIP BEHIND THE CURB, AN 8-FOOT SIDEWALK (SHARED PEDESTRIAN/BICYCLE), STREET TREES AND STREET LIGHTING WILL BE REQUIRED. TO BUILD THIS STREET SECTION, DEDICATION OF 9-FEET OF RIGHT-OF-WAY FRONTING THE SITE WILL BE REQUIRED FOR FUTURE ROAD WIDENING. APPLICANT WISHES TO REQUEST A MODIFICATION FROM STREET IMPROVEMENTS TO RETAIN THE EXISTING CURB AND GUTTER LOCATION ALONG 108TH AVE SE. THE MODIFICATION REVIEW WILL BE DISCUSSED UNDER SEPARATE COVER. 2. EXISTING RIGHT-OF-WAY WIDTH IN 109TH AVE SE IS APPROXIMATELY 33 FEET. 109TH AVE SE IS CLASSIFIED AS A RESIDENTIAL ACCESS ROAD. MINIMUM RIGHT-OF-WAY FOR THIS STREET DESIGNATION IS 53 FEET. TO MEET THE CITY'S COMPLETE STREET STANDARDS, STREET IMPROVEMENTS INCLUDING A PAVEMENT WIDTH OF 20-FEET, A 6-FOOT PARKING LANE ON ONE SIDE, A 0.5-FOOT CURB, AN 8-FOOT PLANTER STRIP, A 5-FOOT SIDEWALK, STREET TREES AND STREET LIGHTING WILL BE REQUIRED TO BE CONSTRUCTED IN THE RIGHT-OF-WAY FRONTING THE SITE PER CITY CODE 4-6-060. TO BUILD THIS STREET SECTION, DEDICATION OF 10-FEET OF RIGHT-OF-WAY FRONTING THE SITE WILL BE REQUIRED FOR FUTURE ROAD WIDENING. APPLICANT WISHES TO REQUEST A MODIFICATION FROM STREET IMPROVEMENTS TO RETAIN THE EXISTING FRONTAGE IMPROVEMENTS ALONG 109TH AVE SE. THE MODIFICATION REVIEW WILL BE DISCUSSED UNDER SEPARATE COVER. 3. PARKING LOT CONSTRUCTION SHALL BE IN ACCORDANCE WITH CITY CODE 4-4-80G AND THE RECOMMENDATIONS OUTLINED IN THE PROVIDED GEOTECHNICAL REPORT. 4. STREET LIGHTING AND STREET TREES ARE REQUIRED TO MEET CURRENT CITY STANDARDS. LIGHTING PLANS ARE REQUIRED TO BE SUBMITTED WITH THE LAND USE APPLICATION AND WILL BE REVIEWED DURING THE CONSTRUCTION UTILITY PERMIT REVIEW. 5. A TRAFFIC ANALYSIS DATED MAY 2, 2017, WAS PROVIDED BY JAKE TRAFFIC ENGINEERING, INC. THE SITE GENERATED TRAFFIC VOLUMES WERE CALCULATED USING DATA FROM THE INSTITUTE OF TRANSPORTATION ENGINEERS (ITE) TRIP GENERATION MANUAL, 9TH EDITION, (2009). BASED ON THE CALCULATIONS PROVIDED, THE PROPOSED DEVELOPMENT WOULD AVERAGE DECREASE OF 1,020 NET NEW DAILY VEHICLE TRIPS. WEEKDAY PEAK HOUR AM TRIPS WOULD GENERATE A REDUCTION OF 81 NEW VEHICLE TRIPS. WEEKDAY PEAK HOUR PM TRIPS WOULD GENERATE A REDUCTION OF 50 NET NEW VEHICLE TRIPS. AS DETAILED IN THE REPORT THE PROPOSED PROJECT IS NOT EXPECTED TO LOWER THE LEVELS OF SERVICE OF THE SURROUNDING INTERSECTIONS INCLUDED IN THE TRAFFIC STUDY. THE PROPOSED DEVELOPMENT IS EXPECTED TO GENERATE LESS THAN 20 NET NEW VEHICLE TRIPS DURING THE AM AND PM PEAK HOURS THEREFORE A TRAFFIC IMPACT ANALYSIS IS NOT WARRANTED. 6. REFER TO CITY CODE 4-4-080 REGARDING DRIVEWAY REGULATIONS. DRIVEWAYS SHALL BE DESIGNED IN ACCORDANCE WITH CITY STANDARD PLANS 104.1 AND 104.2. 6.1. THE MAXIMUM WIDTH OF ANY DRIVEWAY SHALL NOT EXCEED 30-FEET. 6.2. DRIVEWAYS SHALL BE LOCATED A MINIMUM OF 5-FEET FROM PROPERTY LINES. 6.3. MAXIMUM DRIVEWAY SLOPE IS 8%. 7. PAVING AND TRENCH RESTORATION SHALL COMPLY WITH THE CITY'S TRENCH RESTORATION AND OVERLAY REQUIREMENTS. GENERAL COMMENTS 1. ADEQUATE SEPARATION BETWEEN UTILITIES AS WELL AS OTHER FEATURES SHALL BE PROVIDED IN ACCORDANCE WITH CODE REQUIREMENTS. 1.1. 7-FT MINIMUM HORIZONTAL AND 1-FT VERTICAL SEPARATION BETWEEN STORM AND OTHER UTILITIES IS REQUIRED WITH THE EXCEPTION OF WATER LINES WHICH REQUIRE 10-FT HORIZONTAL AND 1.5-FT VERTICAL. 1.2. THE STORMWATER LINE SHOULD BE MINIMUM 5 FEET AWAY FROM ANY OTHER STRUCTURE OR WALL OR BUILDING. 1.3. TRENCH OF ANY UTILITY SHOULD NOT BE IN THE ZONE OF INFLUENCE OF THE RETAINING WALL OR OF THE BUILDING. 2. ALL CIVIL CONSTRUCTION PERMITS FOR UTILITY AND STREET IMPROVEMENTS WILL REQUIRE SEPARATE PLAN SUBMITTALS. ALL CIVIL PLANS SHALL CONFIRM TO THE RENTON DRAFTING STANDARDS. A LICENSED CIVIL ENGINEER SHALL PREPARE THE CIVIL PLANS. PLEASE VISIT THE DEVELOPMENT ENGINEERING FORMS PAGE FOR THE MOST UP-TO-DATE PLAN SUBMITTAL REQUIREMENTS: 3. A LANDSCAPING PLAN SHALL BE INCLUDED WITH THE CIVIL PLAN SUBMITTAL. EACH PLAN SHALL BE ON SEPARATE SHEETS. 4. ALL UTILITY LINES (I.E. ELECTRICAL, PHONE, AND CABLE SERVICES, ETC.) SERVING THE PROPOSED DEVELOPMENT MUST BE UNDERGROUND. THE CONSTRUCTION OF THESE FRANCHISE UTILITIES MUST BE INSPECTED AND APPROVED BY A CITY OF RENTON INSPECTOR. 5. FEES QUOTED IN THIS DOCUMENT REFLECT THE FEES APPLICABLE IN THE YEAR 2017 ONLY AND WILL BE ASSESSED BASED ON THE FEE THAT IS CURRENT AT THE TIME OF THE PERMIT APPLICATION OR ISSUANCE, AS APPLICABLE TO THE PERMIT TYPE. PLEASE VISIT WWW.RENTONWA.GOV FOR THE CURRENT DEVELOPMENT FEE SCHEDULE. SCALE: AS SHOWN ONE INCH AT FULL SCALE IF NOT ONE INCH SCALE ACCORDINGLY VERTICAL: NAVD 1988 HORIZONTAL- NAD 1983/1991 DATU M ENGINEER'S RECORD DRAWING CERTIFICATION SEE SHEET CV-1.0 FOR SIGNED ENGINEER'S RECORD DRAWING CERTIFICATION NOTE CITY OF RENTON Planning/Building/Public Works Dept. R-398802 IN COMPLIANCE WITH CITY OF RENTON STANDARDS RENTON DENTAL ARTS 17816 108TH AVE SE CITY OFV6RBR NOTES AND CONDITIONS OF APPROVAL 04/12/2019 FIELDBOOK: PAGE: SHEET: OF: 02 27 U 0) 00 N O O O T Q J 1� H cn I- Q J Q I- z W 0 z O I- z WM 1 1