HomeMy WebLinkAboutP_Restoration_Plans_181001_v1DESIGNED:SCALE:CHECKED:DRAWN:DATE:SHEETJOB NO.OFBYDESCRIPTIONDATENO.PLOT DATE:DRAWING19019 36th Avenue West, Suite E |Lynnwood, WA 98036PH: (425) 582-9928 | Fax: (425) 582-9930 | www.zippergeo.comSUBMITTAL RECORD8/22/18LAST EDIT:schef\\BASESTATION-PC\Users\ZGA\Projects\2001 - 2050\2041 McCarthy Residence\2041.01 McCarthy Residence\Working File\Drafting\2041.01 Plan Set 8-22-18.dwgRMS8/22/18-INITIAL RELEASE8/22/183MCCARTHY RESIDENCE INVASIVE SPECIES REMOVAL & RESTORATION3403 BURNETT AVENUE NORTHRENTON, WASHINGTONAUGUST 20182041.01RARRMSRMSAS SHOWNCONTACT INFORMATION:CLIENT:MARY MCCARTHY3403 BURNETT AVENUE NORTHRENTON, WA 98327(253) 720-0126LANDSCAPE ARCHITECT:FRANCINE M DAY LANDSCAPE ARCHITECTURE700 NW 42ND STREET, #409SEATTLE, WA 98107(206) 930-7493GEOTECHNICAL ENGINEER:ZIPPER GEO ASSOCIATES, LLC19019 36TH AVE. WEST, SUITE ELYNNWOOD, WA 98036(425) 582-9928CONTACT: RYAN SCHEFFLER, P.E.rscheffler@zippergeo.comSHEET INDEXC1.0 - COVER SHEET & SITE PLANC2.0 - TESC PLANC3.0 - RESTORATION PLANMCCARTHY RESIDENCEINVASIVE SPECIES REMOVALAND RESTORATIONRENTON, WASHINGTONAPPROXIAMTE SCALE IN FEET0 51010TIGHTLINE EXISTING DRAINPIPE TO BOTTOM OF SLOPETIGHTLINE EXISTING DRAINPIPE TO BOTTOM OF SLOPE(APPROXIMATE LOCATION)BASEMAP FROM TOPOGRAPHIC SURVEY BY TYEE SURVEYORS DATED 6/14/18 AND MODIFIED BY ZGAAPPROXIMATE AREA OF LOOSESOIL TO BE REMOVED ANDREPLACED WITH 2-MANGRANITE BOULDERSAPPROXIMATE LOCATIONOF SILT FENCEINSTALL CATCHBASIN FILTERREMOVE INVASIVE SPECIES FROMAPPROXIMATE SHADED AREA ANDRESTORE AREA IN ACCORDANCEWITH LANDSCAPE PLANS
TEMPORARY EROSION AND SEDIMENT CONTROL GENERAL NOTESPART 1 - GENERAL1. THE SUCCESS OF THIS PROJECT IS HIGHLY DEPENDANT ONCONTROL OF SURFACE WATER RUNOFF INTO THE WORKAREA TO PREVENT EROSION AND FURTHER DESTABILIZATIONOF THE SLOPE.2. COMPLETION OF THIS PROJECT WILL REQUIRE TEMPORARILYREMOVING VEGETATION FROM A STEEP SLOPE. THEEXPOSED SURFACE MUST BE PROTECTED FROM EXPOSURETO DIRECT RAINFALL AND SURFACE WATER RUNOFF TO THEEXTENT POSSIBLE DURING CONSTRUCTION. IF WETWEATHER IS EXPECTED (DEFINED AS FORECAST RAINFALLGREATER THAN 0.25 INCHES IN A 12 HOUR PERIOD), AT THEEND OF EACH WORK DAY, THE SLOPE SHALL BE COVEREDWITH ANCHORED PLASTIC SHEETING. AREAS OF THE SITETHAT WILL BE UN-WORKED FOR MORE THAN TWO DAYSSHOULD BE COVERED WITH ANCHORED PLASTIC SHEETING.DEPENDING ON THE CONSTRUCTION PROGRESS, THERE MAYBE A NEED TO TEMPORARILY DELAY WORK AT THE SITE IFHEAVY RAINFALL IS FORECAST. TEMPORARY WORK DELAYSDURING CONSTRUCTION WILL BE EVALUATED ON ACASE-BY-CASE BASIS THROUGH OBSERVATION OF SITECONDITIONS BY ZIPPER GEO ASSOCIATES IN COORDINATIONWITH THE CONTRACTOR.3. CONSTRUCTION EROSION CONTROL MEASURES MUST BE INPLACE AND APPROVED BY THE ENGINEER AND CITY PRIOR TOANY EARTH DISTURBANCE.4. THE IMPLEMENTATION OF THE TEMPORARY EROSION ANDSEDIMENT CONTROL (TESC) PLANS AND THE CONSTRUCTION,MAINTENANCE, REPLACEMENT AND UPGRADING OF THE TESCFACILITIES IS THE RESPONSIBILITY OF THE CONTRACTORUNTIL ALL CONSTRUCTION IS APPROVED AND SITE ISPERMANENTLY STABILIZED.5. THE CONTRACTOR SHALL PROVIDE AND MAINTAINTEMPORARY SEDIMENTATION COLLECTION FACILITIES TOENSURE THAT SEDIMENT-LADEN WATER DOES NOT ENTERTHE PUBLIC DRAINAGE SYSTEM. AS CONSTRUCTIONPROGRESSES AND UNEXPECTED (SEASONAL) CONDITIONSDICTATE, MORE TEMPORARY SEDIMENTATION COLLECTIONFACILITIES MAY BE REQUIRED TO PREVENT VIOLATINGAPPLICABLE WATER STANDARDS. THEREFORE, DURING THECOURSE OF CONSTRUCTION IT SHALL BE THE OBLIGATIONAND RESPONSIBILITY OF THE CONTRACTOR TO ADDRESS ANYNEW CONDITIONS THAT MAY BE CREATED BY THEIRACTIVITIES AND TO PROVIDE ADDITIONAL FACILITIES THATMAY BE NEEDED TO PROTECT ADJACENT PROPERTIES.6. THE TESC FACILITIES SHOWN ON THESE PLANS MUST BECONSTRUCTED IN CONJUNCTION WITH ALL CLEARING ANDGRADING ACTIVITIES, AND IN SUCH A MANNER AS TO ENSURETHAT SEDIMENT-LADEN WATER DOES NOT LEAVE THE SITE,ENTER THE DRAINAGE SYSTEM, OR VIOLATE APPLICABLEWATER STANDARDS.7. NO SEDIMENT SHALL BE TRACKED INTO THE STREET ORPAVED SURFACES. SEDIMENT SHALL BE REMOVED FROMTRUCKS AND EQUIPMENT PRIOR TO LEAVING THE SITE. IN THEEVENT OF FAILURE OF THE EROSION CONTROL SYSTEMRESULTING IN SEDIMENT BEING TRACKED ONTO PAVEDSURFACES, THE CONTRACTOR SHALL IMMEDIATELYIMPLEMENT MEASURES TO CORRECT THE SITUATION, ANDVACUUM STREET SWEEPING SHALL BE EMPLOYED ON ANEMERGENCY BASIS. IF VACUUM STREET SWEEPING VEHICLESARE UTILIZED, THEY SHALL BE OF THE TYPE THAT REMOVESTHE SEDIMENT FROM THE PAVEMENT. WASHING OF THESTREETS WILL NOT BE ALLOWED WITHOUT PRIOR CITY OFRENTON APPROVAL.8. AREAS NOT WORKED FOR MORE THAN 2 DAYS SHALL BECOVERED WITH ANCHORED PLASTIC SHEETING.PART 1 - GENERAL CONT.9. NO SEDIMENT SHALL BE ALLOWED TO ENTER ANY CATCHBASIN WITHIN THE SITE, OR ADJACENT PROPERTIES. IN THEEVENT OF A FAILURE OF THE TESC PLAN THAT RESULTS INSEDIMENT ENTERING A CATCH BASIN, THE CONTRACTORSHALL REMOVE ALL SUCH SEDIMENT IMMEDIATELY.10. DISTURBED SOILS THAT ARE EXPOSED TO SURFACE RUNOFFSHALL BE IMMEDIATELY STABILIZED WITH TESC MEASURESAND APPROVED BY THE ENGINEER AND CITY.11. THE TESC FACILITIES SHALL BE INSPECTED DAILY BY THECONTRACTOR AND MAINTAINED AS NECESSARY TO ENSURETHEIR CONTINUED FUNCTIONING.12. CATCH BASINS IN THE STREET SHALL BE INSPECTED BY THECONTRACTOR DAILY. WATER LEAVING THE SITE DURINGCONSTRUCTION, INCLUDING WATER CARRIED BY TRUCKS,SHALL BE CLEAN. THE CONTRACTOR SHALL CLEAN CITYCATCH BASINS AND IMPLEMENT EXTRA SEDIMENTATIONCONTROL MEASURES IF NECESSARY AND AS DIRECTED BYTHE CITY OF RENTON INSPECTOR/DOE INSPECTOR AT NOADDITIONAL EXPENSE TO OWNER.13. THE TESC FACILITIES SHALL BE MAINTAINED UNTILPERMANENT EROSION CONTROL (REVEGETATION WITHTREES, SHRUBS, GROUND COVER, ETC.) PER THEAPPOROVED PLANS IS IN PLACE.14. WHERE SEEDING FOR TEMPORARY EROSION CONTROL ISUSED, FAST GERMINATING GRASSES SHALL BE APPLIED ATAN APPROPRIATE RATE.15. WHERE STRAW MULCH FOR TEMPORARY EROSION CONTROLIS USED, IT SHALL BE APPLIED AT A MINIMUM THICKNESS OFTWO INCHES.16. THE CONTRACTOR IS SOLELY RESPONSIBLE FOR ALL MEANSAND METHODS AND SEQUENCING OF TESC MEASURES ANDENSURING WATER QUALITY REQUIREMENTS ARE MET.PART 2 - TEMPORARY EXCAVATION STABILITY1. A TEMPORARY EXCAVATION WILL BE REQUIRED TO REMOVELOOSE SOIL FROM AN AREA IN THE NORTHERN PORTION OFTHE SLOPE AND REPLACEMENT WITH BOULDERS.TEMPORARY EXCAVATION SLOPE STABILITY IS A FUNCTIONOF MANY FACTORS, INCLUDING: GROUNDWATER SEEPAGE,THE TYPE AND DENSITY OF THE VARIOUS SOIL STRATA, THEDEPTH OF CUT; SURCHARGE LOADINGS ADJACENT TO THEEXCAVATION, AND THE LENGTH OF TIME THE EXCAVATIONREMAINS OPEN.2. AS THE CONTRACTOR IS CONTINUOUSLY PRESENT AT THESITE AND ABLE TO CONTINUOUSLY OBSERVE SITECONDITIONS, THE CONTRACTOR SHOULD BE RESPONSIBLEFOR MAINTENANCE OF SAFE SLOPES AND WORKER SAFETY.WE RECOMMEND THE CONTRACTOR CONTINUOUSLYOBSERVE TEMPORARY EXCAVATIONS FOR INDICATIONS OFINSTABILITY SUCH AS SOIL SLUMPS, GROUNDWATERSEEPAGE AT THE SURFACE OF THE SLOPE, AND CRACKS ORDOWN SETTING OF THE GROUND SURFACE AT THE TOP OFTHE SLOPE OR ALONG ANY PORTION OF THE SLOPE. IF SIGNSOF INSTABILITY ARE OBSERVED, THE CONTRACTOR SHALLSTOP WORK AND CONTACT ZIPPER GEO ASSOCIATESIMMEDIATELY FOR FURTHER OBSERVATION ANDRECOMMENDATIONS.3. ZIPPER GEO ASSOCIATES (ZGA) SHALL PROVIDE PERIODICOBSERVATION OF THE CLEARING AND RESTORATION AS ITPROCEEDS. ZGA SHALL OBSERVE THE SITE AND TEMPORARYEXCAVATIONS IMMEDIATELY AFTER A RAINFALL EVENTTOTALING 0.5 INCHES OR MORE IN A 24 HOUR PERIOD.SILT FENCE1-TEMPORARY PLASTIC COVERING2-CATCH BASIN INSERT3-DESIGNED:SCALE:CHECKED:DRAWN:DATE:SHEETJOB NO.OFBYDESCRIPTIONDATENO.PLOT DATE:DRAWING19019 36th Avenue West, Suite E |Lynnwood, WA 98036PH: (425) 582-9928 | Fax: (425) 582-9930 | www.zippergeo.comSUBMITTAL RECORD8/22/18LAST EDIT:schef\\BASESTATION-PC\Users\ZGA\Projects\2001 - 2050\2041 McCarthy Residence\2041.01 McCarthy Residence\Working File\Drafting\2041.01 Plan Set 8-22-18.dwgRMS8/22/18-INITIAL RELEASE8/22/183MCCARTHY RESIDENCE INVASIVE SPECIES REMOVAL & RESTORATION3403 BURNETT AVENUE NORTHRENTON, WASHINGTONAUGUST 20182041.01RARRMSRMSNOT TO SCALE