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<br /> EROSION AND SEDIMENTATION CONTROL NOTES: LIMITED WET SEASON UTILITY TRENCHING
<br /> 1.TEMPORARY EROSION/SILTATION CONTROL(TESC)MEASURES SHALL BE INSTALLED PRIOR TO ANY SITE WORK(SEE TESC PLANS). 1. WET SEASON UTILITY TRENCHING SHALL BE LIMITED TO THE BUILDING PAD AREA.
<br /> THESE FACILITIES MUST BE SATISFACTORILY MAINTAINED UNTIL CONSTRUCTION AND LANDSCAPING IS COMPLETED AND THE POTENTIAL
<br /> FOR ON-SITE EROSION HAS PASSED. 2. ISOLATE BUILDING PAD ENVELOPE FROM REMAINDER OF SITE. CONSTRUCT A DIVERSION BERM ON THE UP SLOPE SIDE OF THE
<br /> BUILDING PAD TO PREVENT RUNOFF FROM FLOWING INTO THE BUILDING PAD AREA CONSTRUCT COLLECTION DITCHES/SWALES ON THE
<br /> - 2.ALL PERSONS ENGAGING IN DEVELOPMENT ACTIVITIES SHALL PREVENT OR MINIMIZE EROSION AND SEDIMENTATION ON-SITE,AND DOWN SLOPE SIDES OF THE BUILDING PAD TO COLLECT ALL RUNOFF FROM THE BUILDING PAD AREA.
<br /> SHALL PROTECT PROPERTIES AND WATER COURSES DOWNSTREAM FROM THE SITE.
<br /> 3. CONSTRUCT SEDIMENT TRAP FOR BUILDING PAD. ALL COLLECTION DITCHES FROM BUILDING PAD SHALL BE ROUTED TO THIS TRAP.
<br /> 3.ALL STREETS ARE TO BE KEPT CLEAR OF DIRT AND DEBRIS.STREETS SHALL BE SWEPT IMMEDIATELY WHEN DIRT HAS BEEN
<br /> TRACKED ONTO THE PAVED SURFACES.STREET WASHING IS PROHIBITED. 4. LIMIT EARTH DISTURBING ACTIVITIES TO DRY WEATHER DAYS. RE-ESTABLISH COVER AS SOON AS CONSTRUCTION ACTIVITY IS
<br /> COMPLETE.
<br /> 4.NONCOMPLIANCE WITH THE EROSION CONTROL REQUIREMENTS,WATER QUALITY REQUIREMENTS AND/OR CLEARING LIMITS MAY RESULT 5. PROVIDE PROVISION TO TREAT OR DISPOSE OF TURBID RUNOFF COLLECTED WITHIN THE SEDIMENT TRAP. CLEAN RUNOFF MAY BE
<br /> IN REVOCATION OF PROJECT PERMITS,PLAN APPROVAL AND BOND FORECLOSURES. DISCHARGED TO THE DETENTION POND.
<br /> 5.FROM MAY 1 TO SEPTEMBER 30,NO SOIL SHALL BE EXPOSED FOR MORE THAN 7 DAYS.GROUND COVER BMPS SHALL BE USED 6. COVER MEASURES SHALL BE RE-APPLIED IMMEDIATELY FOLLOWING THE COMPLETION OF THE WORK ACTIVITY. NO AREAS OF
<br /> TO STABILIZE THE SOIL WITHIN THE STATED TIME FRAME OR SOONER IF WARRANTED BY WEATHER REPORTS OR CONDITIONS.APPLY 3" EXPOSED SOIL SHALL REMAIN UNCOVERED UNLESS ACTIVELY BEING WORKED.
<br /> DEPTH WOOD CHIPS OR 4"DEPTH STRAW MULCH FOR TEMPORARY STABILIZATION.
<br /> 6.SOIL STOCKPILES SHALL BE STABILIZED WHEN NOT BEING ACTIVELY WORKED.WHEN ACTIVELY WORKING WITH THE SOIL STOCKPILE, 7. UTILITY INSTALLATION AND TRENCHING SHOULD BE SCHEDULED AROUND THE PREDICTED WEATHER FORECASTS. EXCAVATION OF
<br /> UTILITY TRENCHES SHOULD BE LIMITED TO THE AMOUNT OF CONDUIT THAT MAY BE INSTALLED.AND BACKFILLED IN A DAY. PLASTIC
<br /> STABILIZATION SHALL OCCUR AT THE END OF EACH WORKDAY. SHEETING SHALL BE USED TO COVER ALL STOCKPILES THAT WILL REMAIN OVERNIGHT. SUFFICIENT PLASTIC SHEETING SHALL BE
<br /> STOCKPILED ON SITE TO COVER ALL TEMPORARY STOCKPILED SOIL IN THE EVENT OF AN UNEXPECTED STORM EVENT. COMPLY WITH
<br /> 7.SILTATION BARRIERS AND ALL OTHER TESC MEASURES SHALL BE INSPECTED IMMEDIATELY AFTER EACH RAINFALL EVENT GREATER ALL REQUIREMENT OF CHAPTER 296-155 WAC, PART N, FOR ENSURING TRENCH SAFETY.
<br /> THAN 0.1"RAINFALL,AND AT LEAST DAILY DURING PROLONGED RAINFALL EVENTS.
<br /> 8.MAINTENANCE AND REPAIR OF TESC FACILITIES AND STRUCTURES SHALL BE CONDUCTED IMMEDIATELY UPON RECOGNITION OF A
<br /> PROBLEM OR WHEN THE TESC MEASURES BECOME DAMAGED,OR AS WARRANTED BY MAINTENANCE STANDARDS PROVIDED FOR EACH
<br /> BMP. CONTINGENCY PLAN
<br /> IN THE EVENT THAT WATER QUALITY MONITORING INDICATES THAT TURBID RUNOFF IS LEAVING THE SITE
<br /> 9.SEDIMENTATION DEPOSITS SHALL BE REMOVED FROM ALL TEMPORARY DRAINAGE FACILITIES AND STRUCTURES UPON REACHING A 1. COVER ALL AREAS OF EXPOSED SOIL WITH PLASTIC SHEETING. PLASTIC SHOULD HAVE SUFFICIENT STAKED SAND
<br /> DEPTH OF 6 INCHES. BAGS AND OVERLAPPED JOINTS TO PREVENT WIND BLOW-OFF.
<br /> 10.SUFFICIENT TESC BMP MATERIALS AND SUPPLIES TO PROTECT THE ENTIRE SITE SHALL BE STOCKPILED ON-SITE. 2. PUMP ALL TURBID RUNOFF FROM DETENTION POND TO WATER TRUCK FOR OFF SITE DISPOSAL
<br /> NO OTHER WORK ACTIVITY SHALL BE PERMITTED UNTIL WATER QUALITY MONITORING INDICATES THAT CLEAN RUNOFF IS
<br /> 11.ALL SITE WORK SHALL COMPLY WITH THESE PLANS,PROJECT SPECIFICATIONS,AND THE CONDITIONS AND RECOMMENDATIONS OF LEAVING THE SITE
<br /> THE SUPPLEMENTAL GEOTECHNICAL REPORT
<br /> 12.CONSTRUCTION ACCEPTANCE WILL BE SUBJECT TO A WELL ESTABLISHED GROUND COVER THAT FULFILLS THE REQUIREMENT OF THE WET SEASON GRADING NOTES (OCTOBER 1 THROUGH APRIL 30)
<br /> APPROVED CONSTRUCTION PLANS.
<br /> ALL DISTURBED AREAS SUCH AS DETENTION FACILITIES,ROADWAY BACK-SLOPES,ETC.SHALL BE SEEDED WITH A PERENNIAL GROUND 1. THE CONSTRUCTION SEQUENCE SHALL BE MODIFIED TO MINIMIZE THE AREA OF UNSTABLIZED SOIL A
<br /> COVER GRASS TO MINIMIZE EROSION.GRASS SEEDING WILL BE DONE USING AN APPROVED HYDROSEEDER OR AS OTHERWISE APPROVED MAXIMUM OF 1,000 SQUARE FEET OF DIRT WILL BE EXPOSED AT ANY TIME.
<br /> BY THE CITY.
<br /> 2. EARTHEN AREAS THAT ARE SUBJECT TO CONTRIBUTING SEDIMENTS DURING STORM EVENT AND WHERE EARTH
<br /> 3 13.ALL AREAS TO BE SEEDED SHALL BE CULTIVATED TO THE SATISFACTION OF THE CITY INSPECTOR.THIS MAY BE ACCOMPLISHED MOVEMENT IS NOT ANTICIPATED FOR 48-HOURS SHALL BE STABILIZED USING THE FOLLOWING BMP's:
<br /> BY DISKING,RAKING,HARROWING OR OTHER ACCEPTABLE MEANS.PERFORM ALL CULTURAL OPERATIONS ACROSS OR AT RIGHT ANGLES
<br /> z TO THE SLOPE.IF NECESSARY,SURFACE RUNOFF CONTROL MEASURES SUCH AS GRADIENT TERRACES,INTERCEPTOR DIKE/SWALES, 3. WET SEASON TESC MEASURES WILL BE EXPANDED TO INCLUDE
<br /> LEVEL SPREADERS,AND SEDIMENT BASINS SHALL BE INSTALLED PRIOR TO SEEDING. 1. INSTALL A SECOND SILT FENCE, 10-FEET INSIDE OF THE ORIGINAL SILT FENCE
<br /> 2. INSTALL A SEDIMENT POND DESIGNED TO ACCOMMODATE A 25-YR, 24-HOUR
<br /> J 14.IMMEDIATELY FOLLOWING FINISH GRADING,PERMANENT VEGETATION WILL BE APPLIED AT A MINIMUM 80#PER ACRE.THIS IS TO STORM
<br /> INCLUDE THE FOLLOWING:20%ANNUAL,PERENNIAL OR HYBRID RYE GRASS,40%CREEPING RED FESCUE,40%WHITE CLOVER,UNLESS 3. A PLAN TO PUMP WATER FROM THE SEDIMENT POND TO A GRASSY AREA ON
<br /> OTHERWISE STATED OR AS OTHERWISE APPROVED BY THE CITY.HYDROSEED REQUIRED. THE SITE WHEN DISCHARGE FROM THE SEDIMENT POND IS 'MUDDY', PRIOR APPROVAL BY THE COUNTY
<br /> 4 REQUIRED.
<br /> 15.FERTILIZER SHALL ORGANIC,BE APPLIED AT 400#PER ACRE,AND 3-2-1 NPK RATIO(NITROGEN,PHOSPHOROUS,POTASSIUM) 4. BUILDING MATERIALS SHALL BE STOCKPILED ON THE PAVED ROAD SURFACE
<br /> ni UNLESS OTHERWISE STATED.DEVELOPMENTS ADJACENT TO WATER BODIES SHALL USE NON-PHOSPHORUS FERTILIZER. (REDUCES *TRAFFIC"ON EARTHEN STRUCTURES)
<br /> 3 16.FROM OCTOBER 1 TO APRIL 30,NO SOIL MAY REMAIN EXPOSED FOR MORE THAN 2 DAYS.GROUND COVER BMPS SHALL BE USED 4. SOILS SHALL NOT BE DISTURBED EXCEPT FOR ACTUAL CONSTRUCTION ACTIVITIES. PARKING IS ALLOWED
<br /> F. TO STABILIZE THE SOIL WITHIN THE STATED TIME FRAME OR SOONER IF WARRANTED BY WEATHER REPORTS OR CONDITIONS.APPLY 3" ONLY ON PAVED AND/OR ON GRAVEL SURFACES.
<br /> S DEPTH WOOD CHIPS OR 4"DEPTH STRAW MULCH FOR TEMPORARY STABILIZATION. 5. SLOPES 8%AND GREATER WITHOUT ESTABLISHED GROUNDCOVER WILL BE STABILIZED WITH PLASTIC
<br /> S SHEETING, 6-MIL (MINIMUM). THE SHEETING SHALL BE ANCHORED WITH SAND BAGS LOCATED 5-FEET APART
<br /> q ON THE PERIMETER AND 10-FEET ON CENTER OF THE REMAINDER OF THE SHEETING. MINIMUM OF 2-FEET
<br /> H 17.EXCESS EXCAVATION SHALL BE DISPOSED OF AT A PERMITTED SITE OR COMMERCIAL TOPSOIL COMPANY. OVERLAP IS REQUIRED FOR OVERLAPPING SHEETS.
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<br /> 18.ADDITIONAL POLLUTION PREVENTION REQUIREMENTS ARE INCLUDED IN THE PROJECT SURFACE WATER POLLUTION PREVENTION PLAN 6. WATER DISCHARGED FROM THE SITE WILL BE MONITORED FOR TURBIDITY. MAXIMUM ALLOWABLE TURBIDITY OF
<br /> 3 (SWPPP),INCLUDING MATERIAL HANDLING,SAMPLING,MAINTENANCE,AND REPORTING REQUIREMENTS.A COPY OF THE APPROVED SWPPP DISCHARGED WATER WILL BE 5 NTU OVER BACKGROUND.
<br /> o SHALL BE MAINTAINED ONSITE THROUGH THE ENTIRETY OF CONSTRUCTION.
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<br /> 7. WHEN RAINFALL IS HEAVY (DEFINED AS RAINFALL HARD ENOUGH TO PRODUCE SEDIMENT RUN-OFF FROM
<br /> 19.CLEARING LIMITS SHALL BE FENCED WITH ORANGE BARRIER FENCING,OR OTHER MEANS APPROVED BY THE OWNER,PRIOR TO EXPOSED DIRT),ALL EXPOSED EARTHWORK SHALL BE COVERED. NO OTHER CONSTRUCTION ACTIVITY SHALL
<br /> I BEGINNING CLEARING OR EARTHWORK ACTIVITIES.CLEARING LIMITS SHALL BE REVIEWED WITH THE OWNER AND ADJUSTMENTS MADE TO
<br /> OCCUR ON PERVIOUS SURFACES DURING THESE PERIODS OF HEAVY RAIN.
<br /> $ THE PROTECTION LIMITS AND TRESS TO BE PROTECTED PRIOR TO CLEARING THE SITE.
<br /> 8 8. ALL DRAINAGE SWALES SHALL BE FULLY VEGETATED. SWALES SHALL BE SODDED IF THE VEGETATION
<br /> 20.EXISTING VEGETATION SHALL BE PROTECTED AND RETAINED TO THE MAXIMUM EXTENT FEASIBLE. GROWING IN THE SWALE IS INSUFFICIENT TO PROVIDE WATER QUALITY AND TO PREVENT EROSION OF THE
<br /> .71 SWALE. .
<br /> 21.DURING THE CONSTRUCTION PERIOD,NO DISTURBANCE BEYOND THE FLAGGED CLEARING LIMITS SHALL BE PERMITTED.THE
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<br /> FLAGGING SHALL BE MAINTAINED BY THE CONTRACTOR FOR THE DURATION OF CONSTRUCTION.
<br /> 22.THE ESC FACILITIES SHOWN ON THIS PLAN ARE THE MINIMUM REQUIREMENTS FOR ANTICIPATED SITE CONDITIONS.DURING THE DAILY MAINTENANCE
<br /> CONSTRUCTION PERIOD,THESE ESC FACILITIES SHALL BE UPGRADED AS NEEDED FOR THE UNEXPECTED STORM EVENTS AND TO
<br /> 3 ENSURE THAT SEDIMENT AND SEIMENT-LADEN WATER DO NOT LEAVE THE SITE. ROADS SHALL BE SWEPT OFF AND/OR CLEARED OF DEBRIS EVERYDAY
<br /> 2 23.AT NO TIME SHALL MORE THAN ONE FOOT OF SEDIMENT BE ALLOWED TO ACCUMULATE WITHIN A TRAPPED CATCH BASIN.ALL EROSION CONTROL AND WATER QUALITY ENFORCEMENT
<br /> g CATCH BASINS AND CONVEYANCE LINES SHALL BE CLEANED PRIOR TO PROJECT ACCEPTANCE.THE CLEANING OPERATION SHALL NOT
<br /> FLUSH SEDIMENT LADEN WATER INTO THE DOWNSTREAM SYSTEM. THE CITY OF EVERETT WILL COORDINATE ENFORCEMENT EFFORTS FOR WATER QUALITY AND EROSION
<br /> l CONTROL,AS PER EMC 14.28.460,AS WELL AS WITH THE DEPARTMENT OF ECOLOGY(DOE),IF NECESSARY.
<br /> 24.THE CONTRACTOR SHALL REMOVE ALL TEMPORARY EROSION AND SEDIMENTATION CONTROL BMPS WITHIN 30 DAYS AFTER FINAL SITE
<br /> i STABILIZATION OR AFTER THEY ARE NO LONGER NECESSARY.
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<br /> 425-252-770011-800.616-9900 M.JAIN 3-16-16 NONE
<br /> 39353 Checked By: Verta of 2707 Everett,WashInnue,Suiteton 98201 00 ff,/ON16 eENG� hi.HOLMES Approvd By: 3-16-16 Project(Number
<br /> • No. Date - Riion By Appr. 9 AL 1I4/1(p M.HOLME 3-16-16 20140045 TESC NOTES
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