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A PORTION OF THE SW 1/4 OF SECTION 02,T 28 N, R 04 E,W.M.
<br /> STORMWATER POLLUTION PREVENTION PLAN (SWPPP):
<br /> THE CONTRACTOR IS RESPONSIBLE FOR PROVIDING THE EROSION CONTROL MEASURES SHOWN OR ELEMENT#7:PROTECT DRAIN INLETS 2. SEASONAL WORK LIMITATIONS: S.W.P.P.P. GENERAL NOTES Q
<br /> DESCRIBED IN THE CONTRACT DOCUMENTS AND ANY ADDITIONAL MEASURES THAT MAY BE REQUIRED BY 1. ALL STORM DRAIN INLETS OPERABLE DURING CONSTRUCTION AND ALL INLETS WITHIN 200' FROM OCTOBER 1 THROUGH APRIL 30,CLEARING,GRADING,AND OTHER SOIL DISTURBING ACTIVITIES
<br /> THE CONTRACTORS MEANS AND METHODS OF CONSTRUCTION AS NEEDED TO CONTROL EROSION AND DOWNSTREAM OF THE PROJECT SITE SHALL BE PROTECTED WITH CATCH BASIN FILTERS SO THAT SHALL ONLY BE PERMITTED IF SHOWN TO THE SATISFACTION OF THE LOCAL PERMITTING AUTHORITY NOTE 1:STRUCTURAL FILL
<br /> SEDIMENT AT THE CONSTRUCTION SITE AND TO PREVENT VIOLATION OF SURFACE WATER QUALITY, STORMWATER RUNOFF DOES NOT ENTER THE CONVEYANCE SYSTEM WITHOUT FIRST BEING FILTERED THAT THE TRANSPORT OF SEDIMENT FROM THE CONSTRUCTION SITE TO RECEIVING WATERS WILL BE ALL FILL USED ON THE PROJECT SHALL BE STRUCTURAL FILL MATERIAL.
<br /> GROUND WATER QUALITY,OR SEDIMENT MANAGEMENT STANDARDS.EROSION CONTROL MEASURES SHALL OR TREATED TO REMOVE SEDIMENT.CATCH BASIN FILTERS IN THE ROADWAY WILL BE OIUSEDIMENT PREVENTED THROUGH A COMBINATION OF THE FOLLOWING: STRUCTURAL FILL SHALL CONSIST OF PROPERLY MOISTURE CONDITIONED AND
<br /> BE MAINTAINED THROUGHOUT THE COURSE OF CONSTRUCTION AND UNTIL ALL DISTURBED EARTH IS FILTERS AND CATCH BASIN FILTERS OUTSIDE OF THE ROADWAY WILL BE SEDIMENT FILTERS. a) SITE CONDITIONS INCLUDING EXISTING VEGETATIVE COVERAGE,SLOPE,SOIL TYPE,AND COMPACTED FILL
<br /> FILL SOILS OR IMPORTED GRANULAR MATERIAL SUCH AS DAV I D EVAN S
<br /> STABILIZED IN FINISH GRADES. 2. APPROACH ROADS SHALL BE KEPT CLEAN.SEDIMENT AND STREET WASH WATER SHALL NOT BE PROXIMITY TO RECEIVING WATERS;AND PIT RUN SAND AND GRAVEL THAT IS FREE T DEBRIS,ORGANIC CONTAMINANTS, AND AS I D I VA ES INC.
<br /> ALLOWED TO ENTER STORM DRAINS WITHOUT PRIOR AND ADEQUATE TREATMENT. b) LIMITATIONS ON ACTIVITIES AND THE EXTEND OF DISTURBED AREAS;AND
<br /> THE FOLLOWING DESCRIBES HOW THE CONSTRUCTION SWPPP ADDRESSES EACH OF THE 13 REQUIRED 3. INLET PROTECTION DEVICES SHOULD BE CLEANED OR REMOVED AND REPLACED WHEN SEDIMENT c) PROPOSED EROSION AND SEDIMENT CONTROL MEASURES. OR ROCK FRAGMENTS LARGER THAN 6 INCHES.
<br /> ELEMENTS.REFER TO THESE PLANS FOR DRAWINGS OF THE PROJECT,VICINITY MAP,SITE MAP,EROSION HAS FILLED ONE-THIRD OF THE AVAILABLE STORAGE(OR WHEN FILLED WITH SIX-INCHES OF COMPACTION SHALL BE ACHIEVED BY MECHANICAL MEANS AND A SHEEPS-FOOT 1620 W.Marine View Drive
<br /> AND SEDIMENT CONTROL MEASURES,AND EROSION AND SEDIMENT CONTROL DETAILS. SEDIMENT). BASED ON THE INFORMATION PROVIDED AND LOCAL WEATHER CONDITIONS,THE PROJECT LEAD MAY ROLLER IS RECOMMENDED IN ADDITION TO A STEEL DRUM VIBRATORY ROLLER. Suite 200
<br /> EXPAND OR RESTRICT THE SEASONAL LIMITATION ON SITE DISTURBANCE.THE PROJECT LEAD SHALL ALL FILL SHALL BE COMPACTED TO THE REQUIRED PERCENTAGE OF THE Everett,WA 98201
<br /> ELEMENT#1:PRESERVE VEGETATION/MARK CLEARING LIMITS BMPs TO BE USED: TAKE ENFORCEMENT ACTION-SUCH AS NOTICE OF VIOLATION,ADMINISTRATIVE ORDER,PENALTY,OR 425.259.4099
<br /> 1. PRIOR TO BEGINNING LAND DISTURBING ACTIVITIES(INCLUDING CLEARING AND GRADING)CLEARLY BMP C220:STORM DRAIN INLET PROTECTION(WSDOT STD PLAN I-40.20-00) STOP-WORK ORDER UNDER THE FOLLOWING CIRCUMSTANCES: MAXIMUM DRY DENSITY(MDD)PER AMERICAN SOCIETY FOR TESTING AND
<br /> MARK ALL CLEARING LIMITS AND TREES THAT ARE TO BE PRESERVED WITHIN THE CONSTRUCTION BMP C233:SILT FENCE - IF,DURING THE COURSE OF ANY CONSTRUCTION ACTIVITY OR SOIL DISTURBANCE DURING THE MATERIALS(ASTM)D 1557.
<br /> AREA AS SHOWN ON THE DRAWINGS. SEASONAL LIMITATION PERIOD,SEDIMENT LEAVES THE CONSTRUCTION SITE CAUSING A NOTE 2:SITE GRADING
<br /> 2. SILT FENCE,GEOTEXTILE ENCASED BARRIERS,CONSTRUCTION FENCE,ORANGE PLASTIC FENCE,OR ELEMENT#8:STABILIZE CHANNELS AND OUTLETS VIOLATION OF THE SURFACE WATER QUALITY STANDARD;OR
<br /> OTHER APPROVED MEASURES MAY BE USED TO MARK THE CLEARING LIMITS AT THE CONTRACTOR'S 1. ALL TEMPORARY ON-SITE CONVEYANCE CHANNELS SHALL BE DESIGNED,CONSTRUCTED AND - IF CLEARING AND GRADING LIMITS OR EROSION AND SEDIMENT CONTROLS MEASURES SHOWN IN ALL FILL AND BACKFILL SHALL BE PLACED IN THIN LIFTS(APPROXIMATELY 6
<br /> OPTION. STABILIZED TO PREVENT EROSION FROM THE EXPECTED PEAK 10 MINUTE VELOCITY OF FLOW FROM A THE APPROVED PLAN ARE NOT MAINTAINED. INCHES)SO THAT UNIFORM COMPACTION CAN BE ACHIEVED THROUGHOUT THE
<br /> 3. THE DUFF LAYER,NATIVE TOPSOIL,AND NATURAL VEGETATION SHALL BE RETAINED IN AN TYPE 1A,10-YR,24-HR FREQUENCY STORM FOR THE DEVELOPED CONDITION.ALTERNATIVELY,THE ENTIRE LIFT THICKNESS.FILL PLACED WITHIN 24 INCHES OF ROUGH GRADE
<br /> UNDISTURBED STATE TO THE MAXIMUM DEGREE PRACTICABLE. 10-YR,1-HR FLOW RATE INDICATED BY AN APPROVED CONTINUOUS RUNOFF MODEL,INCREASED BY A THE FOLLOWING ACTIVITIES ARE EXEMPT FROM THE SEASONAL CLEARING AND GRADING LIMITATIONS: SHALL BE COMPACTED TO AT LEAST 95 PERCENT MDD PER ASTM D 1557.FILL
<br /> FACTOR OF 1.6,MAY BE USED. - ROUTINE MAINTENANCE AND NECESSARY REPAIR OF EROSION AND SEDIMENT CONTROL BMP.; AND BACKFILL MORE THAN 24 INCHES BELOW ROUGH GRADE SHALL BE
<br /> SUGGESTED BMPs/BMPs TO BE USED: 2. STABILIZATION,INCLUDING ARMORING MATERIAL,ADEQUATE TO PREVENT EROSION OF OUTLETS, - ROUTINE MAINTENANCE OF PUBLIC FACILITIES OR EXISTING UTILITY STRUCTURES THAT DO NOT COMPACTED TO AT LEAST 92 PERCENT MDD PER ASTM D 1557.IF CUTS ARE
<br /> BMP C101:PRESERVING NATURAL VEGETATION BMP C103:HIGH VISIBILITY PLASTIC FENCE ADJACENT STREAM BANKS,SLOPES,AND DOWNSTREAM REACHES SHALL BE PROVIDED AT THE EXPOSE THE SOIL OR RESULT IN THE REMOVAL OF THE VEGETATIVE COVER TO SOIL;AND REQUIRED ACROSS TH SITE TO ACHIEVE GRADE,THEN THE EXISTING SOILS
<br /> BMP C233:SILT FENCE OUTLETS OF ALL CONVEYANCE SYSTEMS. - ACTIVITIES WHERE THERE IS ONE HUNDRED PERCENT INFILTRATION OF SURFACE WATER SHALL BE CUT TO 2 FEET BELOW ROUGH GRADE,PROOF-ROLLED,AND THEN THE
<br /> RUNOFF WITHIN THE SITE IN APPROVED AND INSTALLED EROSION AND SEDIMENT CONTROL UPPER 2 FEET SHALL BE REPLACED WITH STRUCTURAL FILL COMPACTED TO AT
<br /> ELEMENT#2:ESTABLISH CONSTRUCTION ACCESS SUGGESTED BMPs/BMPs TO BE USED: FACILITIES.
<br /> 1. CONSTRUCTION VEHICLE ACCESS AND EXIT SHALL BE LIMITED TO ONE ROUTE.REFER TO SWPP PLAN BMP C207:CHECK DAMS LEAST 95 PERCENT OF THE MAXIMUM DRY DENSITY.
<br /> OF THESE PLANS FOR THE CONSTRUCTION ENTRANCE LOCATION.ALL ACCESS/EXIT POINTS SHALL BE BMP C209:OUTLET PROTECTION 3. COORDINATE WITH UTILITIES AND OTHER CONTRACTORS PRIOR TO PLACING NEW FILL THE EXPOSED SUBGRADE ACROSS THE SITE SHALL W
<br /> STABILIZED WITH QUARRY SPALLS,CRUSHED ROCK OR OTHER EQUIVALENT BMP,TO MINIMIZE THE THE PRIMARY PROJECT PROPONENT SHALL EVALUATE,WITH INPUT FROM UTILITIES AND OTHER BE EVALUATED BY PROOF-ROLLING USING A PIECE OF HEAVY TIRE-MOUNTED
<br /> TRACKING OF SEDIMENT ONTO PUBLIC ROADS. ELEMENT#9:CONTROL POLLUTANTS CONTRACTORS,THE STORMWATER MANAGEMENT REQUIREMENTS FOR THE ENTIRE PROJECT, EQUIPMENT OR A LOADED DUMP TRUCK.ALL SOFT AREAS IDENTIFIED DURING Z (n
<br /> 2. IF THE STABILIZED CONSTRUCTION ENTRANCE IS NOT EFFECTIVE IN PREVENTING SEDIMENT FROM 1. ALL POLLUTANTS,INCLUDING WASTE MATERIALS AND DEMOLITION DEBRIS,THAT OCCUR ONSITE INCLUDING THE UTILITIES,WHEN PREPARING THE CONSTRUCTION SWPPP. THE PROOF-ROLL SHALL BE REMOVED AND REPLACED WITH STRUCTURAL FILL. LLJ Z
<br /> BEING TRACKED ONTO PUBLIC ROADS,WHEEL WASH OR TIRE BATHS SHALL BE LOCATED ON SITE. SHALL BE HANDLED AND DISPOSED OF IN A MANNER THAT DOES NOT CAUSE CONTAMINATION OF AFTER PROOFROLLING,THE SUBGRADE AREAS SHALL BE THOROUGHLY V Q
<br /> 3. IF SEDIMENT IS TRACKED OFF SITE,PUBLIC OR PRIVATE ROADS SHALL BE CLEANED THOROUGHLY AT STORMWATER. 4. INSPECTION AND MONITORING: COMPACTED TO A FIRM AND UNYIELDING CONDITION.
<br /> THE END OF EACH DAY,OR MORE FREQUENTLY DURING WET WEATHER.SEDIMENT SHALL BE 2. COVER,CONTAINMENT,AND PROTECTION FROM VANDALISM SHALL BE PROVIDED FOR ALL J J
<br /> REMOVED FROM ROADS BY SHOVELING OR PICKUP SWEEPING AND SHALL BE TRANSPORTED TO A CHEMICALS,LIQUID PRODUCTS,PETROLEUM PRODUCTS,AND OTHER MATERIALS THAT HAVE THE SITE INSPECTION SHALL BE CONDUCTED BY A PERSON WHO IS KNOWLEDGEABLE IN THE PRINCIPLES Q a ❑
<br /> CONTROLLED SEDIMENT DISPOSAL AREA. POTENTIAL TO POSE A THREAT TO HUMAN HEALTH OR THE ENVIRONMENT.ON-SITE FUELING TANKS AND PRACTICES OF EROSION AND SEDIMENT CONTROL AT LEAST ONCE EVERY CALENDAR WEEK AND NOTE 3:REGRADED SLOPES Z J /1
<br /> 4. STREET WASHING IS ALLOWED ONLY AFTER SEDIMENT IS REMOVED AS DESCRIBED ABOVE.STREET SHALL INCLUDE SECONDARY CONTAINMENT. WITHIN 24 HOURS OF ANY RAINFALL EVENT.THIS PERSON HAS THE SKILLS TO: ALL REGRADED SLOPES SHALL BE NO STEEPER THAN 2H:1 V.THE OUTER 10 FEET (� lAi
<br /> WASH WASTEWATER SHALL BE CONTROLLED BY PUMPING BACK ON SITE OR OTHERWISE BE 3. MAINTENANCE,FUELING,AND REPAIR OF HEAVY EQUIPMENT AND VEHICLES SHALL BE CONDUCTED a) ASSESS THE SITE CONDITIONS AND CONSTRUCTION ACTIVITIES THAT COULD IMPACT THE (HORIZONTAL DISTANCE)FROM FINISHED GRADE OF ALL REGRADED SLOPES O Q l^i
<br /> PREVENTED FROM DISCHARGING INTO SYSTEMS TRIBUTARY TO WATERS OF THE STATE. USING SPILL PREVENTION AND CONTROL MEASURES.CONTAMINATED SURFACES SHALL BE CLEANED QUALITY OF STORMWATER,AND SHALL BE REMOVED AND REPLACED WITH STRUCTURAL FILL COMPACTED TO AT I,JJ to li
<br /> IMMEDIATELY FOLLOWING ANY SPILL INCIDENT. b) ASSESS THE EFFECTIVENESS OF EROSION AND SEDIMENT CONTROL MEASURES USED TO LEAST 90 PERCENT OF THE MDD PER ASTM D 1557.STRUCTURAL FILL SHALL BE 2
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<br /> SUGGESTED BMPs/BMPs TO BE USED: 4. WHEEL WASH OR TIRE BATH WASTEWATER SHALL BE DISCHARGED TO A SEPARATE ON-SITE CONTROL THE QUALITY OF STORMWATER DISCHARGES.
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<br /> PLACED E APPROXIMATELY 6 INCH LOOSE LIFTS PRIOR TO COMPACTION.ALL
<br /> BMP C140:STABILIZED CONSTRUCTION ACCESS TREATMENT SYSTEM OR TO THE SANITARY SEWER WITH LOCAL SEWER DISTRICT APPROVAL. REGRADED SLOPES SHALL BE OVERBUILT BY AT LEAST 2 FEET AND THEN CUT O Z N
<br /> BMP C140:DUST CONTROL 5. APPLICATION OF FERTILIZERS AND PESTICIDES,SHALL BE CONDUCTED IN A MANNER AND AT T INSPECTION ANON S WATER MONITORING E,SITE RUNOFF REVEALS THAT THE BMPs IDENTIFIED IN BACK TO DESIGN GRADE PRIOR TO PLACING LANDSCAPING MATERIALS.THE rn
<br /> APPLICATION RATES THAT WILL NOT RESULT R LOSS OF CHEMICAL TO STORMWATERPROCEDURE RUNOFF. THE CONSTRUCTION SWPPP ARE INADEQUATE,THE CONTRACTOR SHALL IMMEDIATELY ADD BMPs TO BOTTOM OF THE FILL ZONE SHALL BE KEYED INTO THE EXISTING SOILS BY AT V
<br /> ELEMENT#3:CONTROL FLOW RATES MANUFACTURERS'LABEL REQUIREMENTS FOR APPLICATION RATES AND PROCEDURES SHALL BE THE SWPPP AS NECESSARY. LEAST 3 FEET BELOW ADJACENT GRADE.THE STRUCTURAL FILL MATERIALS
<br /> 1. PROPERTIES AND WATERWAYS DOWNSTREAM FROM DEVELOPMENT SITES SHALL BE PROTECTED FOLLOWED. Z
<br /> FROM EROSION DUE TO INCREASES IN THE VELOCITY AND PEAK VOLUMETRIC FLOW RATE OF 6. BMPs SHALL BE USED TO PREVENT OR TREAT CONTAMINATION OF STORMWATER RUNOFF BY pH SUGGESTED BMPs/BMPs TO BE USED: SHALL BE BENCHED INTO THE TEMPORARY CUT SLOPE AT LEAST 4 FEET Q O
<br /> STORMWATER RUNOFF FROM THE PROJECT SITE. MODIFYING SOURCES.THESE SOURCES INCLUDE,BUT ARE NOT LIMITED TO:BULK CEMENT,CEMENT BMP C150:MATERIALS ON HAND BMP C160:CERTIFIED EROSION AND SEDIMENT CONTROL LEAD HORIZONTALLY FOR EVERY 2 FEET VERTICAL.THE SLOPES SHALL BE TRACK V
<br /> KILN DUST,FLY ASH,NEW CONCRETE WASHING AND CURING WATERS,WASTE STREAMS GENERATED BMP C162:SCHEDULING WALKED PRIOR TO PLACING LANDSCAPE MATERIALS AND HYDROSEEDING.
<br /> SUGGESTED BMPs/BMPs TO BE USED: FROM CONCRETE GRINDING AND SAWING,EXPOSED AGGREGATE PROCESSES,AND CONCRETE Q
<br /> BMP C207:CHECK DAMS BMP C209:OUTLET PROTECTION PUMPING AND MIXER WASHOUT WATERS.PERMITTEES SHALL ADJUST THE pH OF STORMWATER IF ELEMENT#13:PROTECT LOW IMPACT DEVELOPMENT BMPs NOTE 4:FILL SLOPES W
<br /> BMP C241:SEDIMENT POND NECESSARY TO PREVENT VIOLATIONS OF WATER QUALITY STANDARDS. 1. AREAS ON-SITE WHICH UTILIZE STORMWATEER MANAGEMENT BMPs SHALL BE PROTECTED FROM ALL NEW SLOPES SHALL BE NO STEEPER THAN 2HA V.IF EXISTING FILL IS WITHIN cn
<br /> 7. PERMITTEES SHALL OBTAIN WRITTEN APPROVAL FROM ECOLOGY PRIOR TO USING CHEMICAL SILTATION AND COMPACTION DURING THE CONSTRUCTION PROCESS. THE OUTER 10 FEET(HORIZONTAL DISTANCE)FROM FINISHED GRADE OF FILL r
<br /> SLOPES,THEN EXISTING FILL SHALL BE REMOVED TO A DISTANCE OF AT LEAST 10 H
<br /> ELEMENT#4:INSTALL SEDIMENT CONTROLS TREATMENT,OTHER THAN CARBON DIOXIDE OR DRY ICE TO ADJUST pH. a) DO NOT ALLOW MUDDY CONSTRUCTION EQUIPMENT ON BASE MATERIAL OR PAVEMENT.DO NOT
<br /> 1. THE DUFF LAYER,NATIVE SOIL,AND NATURAL VEGETATION SHALL BE RETAINED IN AN UNDISTURBED ALLOW SEDIMENT-LADEN RUNOFF ONTO PERMEABLE PAVEMENTS OR BASE MATERIALS. FEET FROM THE SLOPE FACE AND REPLACED WITH STRUCTURAL FILL W
<br /> STATE TO THE MAXIMUM EXTENT PRACTICABLE. SUGGESTED BMPs/BMPs TO BE USED: b) PAVEMENT FOULED WITH SEDIMENTS OR NO LONGER PASSING AN INITIAL INFILTRATION TEST Q.
<br /> 2. SEDIMENT CONTROL BMPs SHALL BE CONSTRUCTED AS ONE OF THE FIRST STEPS IN GRADING.THESE BMP C151:CONCRETE HANDLING MUST BE CLEANED USING PROCEDURES IN ACCORDANCE WITH THE CURRENT DOE MANUAL OR COMPACTED TO AT LEAST 90 PERCENT OF THE MDD PER ASTM D 1557. NJ
<br /> BMPs SHALL BE FUNCTIONAL BEFORE OTHER LAND DISTURBING ACTIVITIES TAKE PLACE. BMP C152:SAWCUTTING AND SURFACE POLLUTION PREVENTION MANUFACTURERS PROCEDURES. STRUCTURAL FILL SHALL BE PLACED IN APPROXIMATELY 6 INCH LOOSE LIFTS >
<br /> 3. PRIOR TO LEAVING THE CONSTRUCTION SITE,STORMWATER RUNOFF FROM DISTURBED AREAS SHALL BMP C153:MATERIAL DELIVERY,STORAGE AND CONTAINMENT c) KEEP ALL HEAVY EQUIPMENT OFF EXISTING SOILS UNDER LID FACILITIES THAT HAVE BEEN PRIOR TO COMPACTION.ALL FILL SLOPES SHALL BE OVERBUILT BY AT LEAST 2 W
<br /> PASS THROUGH AN APPROPRIATE SEDIMENT REMOVAL BMP.RUNOFF FROM FULL STABILIZED AREAS EXCAVATED TO FINAL GRADE TO RETAIN THE INFILTRATION RATE OF THE SOILS. FEET AND THEN CUT BACK TO DESIGN GRADE PRIOR TO PLACING LANDSCAPING ILL
<br /> MAY BE DISCHARGED WITHOUT A SEDIMENT REMOVAL BMP,BUT MUST MEET THE FLOW CONTROL ELEMENT#10,CONTROL DE-WATERING MATERIALS.THE BOTTOM OF THE FILL ZONE SHALL BE KEYED INTO THE EXISTING 0
<br /> PERFORMANCE STANDARD OF ELEMENT#3. 1. FOUNDATION,VAULT AND TRENCH DE-WATERING WATER,WHICH HAVE SIMILAR CHARACTERISTICS TO SUGGESTED BMP./BMPs TO BE USED: SOILS BY AT LEAST 3 FEET BELOW ADJACENT GRADE.THE STRUCTURAL FILL }
<br /> STORMWATER RUNOFF AT THE SITE,SHALL BE DISCHARGED INTO A CONTROLLED CONVEYANCE NOT APPLICABLE MATERIALS SHALL BE BENCHED INTO THE TEMPORARY CUT SLOPE AT LEAST 4 H
<br /> SUGGESTED SMPs/BMP.TO BE USED: SYSTEM PRIOR TO DISCHARGE TO A SEDIMENT TRAP OR SEDIMENT POND. FEET HORIZONTALLY FOR EVERY 2 FEET VERTICAL.THE SLOPES SHALL BE V
<br /> BMP C233:TEMPORARY SILT FENCE 2. CLEAN,NON-TURBID DE-WATERING WATER,SUCH AS WELL-PONT GROUND WATER,CAN BE TRACK WALKED PRIOR TO PLACING LANDSCAPE MATERIALS AND HYDROSEEDING.
<br /> BMP C241:SEDIMENT POND DISCHARGED TO SYSTEMS TRIBUTARY TO,OR DIRECTLY INTO SURFACE WATERS OF THE STATE,AS
<br /> SPECIFIED IN ELEMENT#8,PROVIDED THE DE-WATERING FLOW DOES NOT CAUSE EROSION OR U Q
<br /> ELEMENT#5:STABILIZE SOILS FLOODING OF RECEIVING WATERS.CLEAN DE-WATERING WATER SHOULD NOT BE ROUTED THROUGH NOTE 5:MONITORING AND TESTING W W _
<br /> 1. EXPOSED AND UNWORKED SOILS SHALL BE STABILIZED BY APPLICATION OF EFFECTIVE BMPs THAT STORMWATER SEDIMENT PONDS. THE OWNER WILL EMPLOY THE GEOTECHNICAL ENGINEER(GEOENGINEERS)TO m H
<br /> PROTECT THE SOIL FROM EROSIVE FORCES OF RAINDROPS.FLOWING WATER,AND WIND. 3. OTHER DE-WATERING DISPOSAL OPTIONS MAY INCLUDE: OBSERVE EARTHWORK ACTIVITIES AND TO TEST STRUCTURAL FILL PLACED ON
<br /> 2. TO PREVENT EROSION,NO SOILS SHALL REMAIN EXPOSED AND UNWORKED FOR MORE THAN THE TIME A.) INFILTRATION THE SITE.THE CONTRACTOR SHALL FACILITATE OBSERVATIONS AND TESTING BY W
<br /> PERIODS SET FORTH BELOW: B.) TRANSPORT OFF SITE IN A VEHICLE,SUCH AS A VACUUM FLUSH TRUCK,FOR LEGAL DISPOSAL IN Q N
<br /> THE OWNER'S REPRESENTATIVES AS NEEDED. ❑ a
<br /> DURING THE WET SEASON(OCTOBER 1-APRIL 30):2 DAYS A MANNER THAT DOES NOT POLLUTE STATE WATERS. ry
<br /> DURING THE DRY SEASON(MAY 1-SEPT.30):7 DAYS C.) ECOLOGY APPROVED ON-SITE CHEMICAL TREATMENT OR OTHER SUITABLE TREATMENT N
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<br /> NOTE 6:CESCL NOTE m O
<br /> THIS STABILIZATION REQUIREMENT APPLIES TO ALL SOILS ON SITE,WHETHER AT FINAL GRADE OR TECHNOLOGIES. ❑t
<br /> NOT.THESE TIMES MAY BE ADJUSTED BY THE LOCAL PERMITTING AUTHORITY IF IT CAN BE SHOWN D.) SANITARY SEWER DISCHARGE WITH LOCAL SEWER DISTRICT APPROVAL,IF THERE IS NO OTHER CONTRACTOR TO PROVIDE ALL WASHINGTON STATE DEPARTMENT OF y
<br /> HAT SITE CONDITIONS OR THE AVERAGE TIME BETWEEN STORM EVENTS JUSTIFIES A DIFFERENT OPTION. ECOLOGY CESCL SERVICES INCLUDING STORMWATER MONITORING,RECORDING p,
<br /> STANDARD. E.) USE OF A SEDIMENTATION BAG(DIRTBAG OR APPROVED EQUAL)WITH OUTFALL TO A DITCH OR AND REPORTING. U
<br /> 3. SOILS SHALL BE STABILIZED AT THE END OF THE SHIFT BEFORE A HOLIDAY OR WEEKEND IF NEEDED SWALE FOR SMALL VOLUMES OF LOCALIZED DE-WATERING.
<br /> BASED ON THE WEATHER FORECAST. 4. HIGHLY TURBID CONTAMINATED DE-WATERING WATER FROM CONSTRUCTION EQUIPMENT OPERATION, NOTE 7:OVERFLOW NOTE: £ O
<br /> 4. SOIL STOCKPILES SHALL BE STABILIZED FROM EROSION,PROTECTED WITH SEDIMENT TRAPPING CLAMSHELL DIGGING,CONCRETE TREMIE POUR OR WORK INSIDE A COFFERDAM SHALL BE HANDLED ALL OVERFLOWS AND OTHER DISCHARGE OF CONSTRUCTION 4) N N
<br /> MEASURES,AND WHERE POSSIBLE,BE LOCATED AWAY FROM STORM DRAIN INLETS,WATERWAYS, SEPARATELY FROM STORMWATER. �.,0_
<br /> STORMWATER MUST COMPLY WITH TURBIDITY THRESHOLDS. o 0
<br /> AND DRAINAGE CHANNELS. ` o-c
<br /> 5. APPLICABLE BMPs INCLUDE,BUT ARE NOT LIMITED TO:TEMPORARY AND PERMANENT SEEDING, SUGGESTED BMPs/BMPs TO BE USED: NOTE 8:STABILIZATION NOTE:
<br /> SODDING,MULCHING,PLASTIC COVERING,EROSION CONTROL FABRICS AND MATTING,SOIL BMP C241:SEDIMENT POND 'a w >.
<br /> ti APPLICATION OF POLYACRYLAMIDE(PAM),THE EARLY APPLICATION OF GRAVEL BASE ON AREAS TO BE PARKING AREA STABILIZATION IS THE PREFERRED BMP FOR ANY W W N c
<br /> w PAVED AND DUST CONTROL.SELECT SOIL STABILIZATION MEASURES SHALL BE APPROPRIATE FOR ELEMENT#11:MAINTAIN BMPs EXPOSED SOIL WITHIN THE PARKING LOT.TO PREVENT EROSION,NO g 3 0.O
<br /> ~ THE TIME OF YEAR,SITE CONDITIONS,ESTIMATED DURATION OF USE,AND THE POTENTIAL WATER 1. INSPECT EROSION CONTROL DEVICES ON A WEEKLY BASIS AND AFTER EACH RUNOFF EVENT.MAKE SOILS SHALL REMAIN EXPOSED AND UNWORKED FOR MORE THAN 2 ' Z 2 ❑ N
<br /> w QUALITY IMPACTS. NECESSARY REPAIRS AND MAINTENANCE TO ENSURE CONTINUED PERFORMANCE OF EROSION AND DAYS DURING THE WET SEASON AND 7 DAYS DURING THE DRY Y N OO
<br /> 6. REMOVE L TESC MEASURES AS SOON AS PRACTICAL AFTER ESTABLISHMENT OF UNIFORM GRASS SEDIMENT CONTROLS. SEASON. CONTRACTOR TO UTILIZE OTHER COVER PRACTICES AS
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<br /> GROWTH OR INSTALLATION OF OTHER PERMANENT STABILIZATION MEASURES.REPAIR ANY DAMAGE NECESSARY TO COMPLY WITH SEASONAL GRADING CONSTRAINTS. ~
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<br /> c TO STABILIZED SURFACES AFTER REMOVAL OF TESC MEASURES. 2. WHEN SEDIMENT ACCUMULATION IN SEDIMENTATION STRUCTURES,OTHER THAN INLET PROTECTION W of U F
<br /> DEVICES,HAS REACHED A POINT ONE-THIRD DEPTH OF SEDIMENT STRUCTURE OR DEVICE,OR IF W WF
<br /> SUGGESTED BMPs/BMPs TO BE USED: FLOW THROUGH THE DEVICE IS REDUCED BY MORE THAN ONE-THIRD CAPACITY,THE CONTRACTOR
<br /> BMP C120:TEMPORARY AND PERMANENT SEEDING SHALL REMOVE AND REPLACE DISPOSABLE DEVICES OR CLEAN AND DISPOSE OF SEDIMENT. ❑ w;
<br /> �j BMP C140:DUST CONTROL a 3. TEMPORARY EROSION AND SEDIMENT CONTROL BMPs SHALL BE REMOVED WITHIN 30 DAYS AFTER Z
<br /> ELEMENT#6:PROTECT SLOPES FINAL SITE STABILIZATION IS ACHIEVED OR AFTER THE TEMPORARY BMPs ARE NO LONGER NEEDED.
<br /> W 1. DESIGN,CONSTRUCT,AND PHASE CUT AND FILL SLOPES IN A MANNER THAT WILL MINIMIZE EROSION. TRAPPED SEDIMENT SHALL BE REMOVED OR STABILIZED ON SITE.DISTURBED SOILS SHALL BE
<br /> 2
<br /> r? APPLICABLE PRACTICES INCLUDE,BUT ARE NOT LIMITED TO,REDUCING CONTINUOUS LENGTH OF PERMANENTLY STABILIZED.
<br /> 4 SLOPE WITH TERRACING AND DIVERSIONS,REDUCING SLOPE STEEPNESS,AND ROUGHENING SLOPE
<br /> o SURFACES (e.g.,TRACK WALKING). SUGGESTED BMPs/BMPs TO BE USED:
<br /> 2. OFF-SITE STORMWATER RUN-ON OR GROUNDWATER SHALL BE DIVERTED AWAY FROM SLOPES AND BMP C150:MATERIALS ON HAND N. S
<br /> gDISTURBED AREAS WITH INTERCEPTOR DIKES,PIPES, AND/OR SWALES.OFF-SITE STORMWATER CMP C160:CERTIFIED EROSION AND SEDIMENT CONTROL LEAD
<br /> c SHOULD BE MANAGED SEPARATELY FROM STORMWATER GENERATED ON THE SITE.
<br /> 3. DO NOT CLEAR AND GRUB SLOPES GREATER THAN 4(HORIZONTAL):1(VERTICAL)UNLESS FURTHER ELEMENT#12:MANAGE THE PROJECT
<br /> $ WORK RESULTING IN STABILIZATION OF THE SLOPES TO BE CLEARED AND GRUBBED IS SCHEDULED. 1. PHASING OF CONSTRUCTION: J
<br /> w 4. EXCAVATED MATERIAL SHALL BE PLACED ON THE UPHILL SIDE OF TRENCHES,CONSISTENT WITH a) DEVELOPMENT PROJECTS SHALL BE PHASED WHERE FEASIBLE IN ORDER TO PREVENT,TO THE
<br /> SAFETY AND SPACE CONSIDERATIONS. MAXIMUM EXTENT PRACTICABLE,THE TRANSPORT OF SEDIMENT FROM THE DEVELOPMENT SITE 3naa �v
<br /> 5. CHECK DAMS SHALL BE PLACED AT REGULAR INTERVALS WITHIN CONSTRUCTED CHANNELS THAT DURING CONSTRUCTION.REVEGETATION OF EXPOSED AREAS AND MAINTENANCE OF THAT ���, 1
<br /> a ARE CUT DOWN A SLOPE. VEGETATION SHALL BE AN INTEGRAL PART OF THE CLEARING ACTIVITIES FOR ANY PHASE. s'S70NALG
<br /> b) CLEARING AND GRADING ACTIVITIES FOR DEVELOPMENTS SHALL BE PERMITTED ONLY IF
<br /> u= SUGGESTED BMPs/BMPs TO BE USED: CONDUCTED PURSUANT TO AN APPROVED SITE DEVELOPMENT PLAN(e.g.,SUBDIVISION
<br /> BMP C120:TEMPORARY AND PERMANENT SEEDING BMP200:INTERCEPTOR DIKE AND SWALE APPROVAL)THAT ESTABLISHES APPROVED AREAS OF CLEARING,GRADING,CUTTING AND
<br /> =c BMPC207:CHECK DAMS FILLING.WHEN ESTABLISHING THESE PERMITTED CLEARING AND GRADING AREAS,
<br /> U U CONSIDERATION SHOULD BE GIVEN TO MINIMIZING REMOVAL OF EXISTING TREES AND
<br /> MINIMIZING DISTURBANCE AND COMPACTION OF NATIVE SOILS EXCEPT AS NEEDED FOR CHECKED BY:JNS
<br /> m m BUILDING PURPOSES.THESE PERMITTED CLEARING AND GRADING AREAS AND ANY OTHER DESIGNED BY:AC
<br /> AREAS REQUIRED TO PRESERVE CRITICAL OR SENSITIVE AREAS,BUFFERS,NATIVE GROWTH DRAWN BY:TR
<br /> a S PROTECTION EASEMENTS,OR TREE RETENTION AREAS AS MAY BE REQUIRED BY LOCAL
<br /> JURISDICTIONS,SHALL BE DELINEATED ON THE SITE PLANS AND THE DEVELOPMENT SITE. FIRST SUBMITTAL DATE:03/03/22
<br /> !LL
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