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EROSION, SEDIMENTATION AND WATER QUALffY SITE I P TiO S
<br />PRIOR TO ANY SITE DEVELOPMENT WORK TAKING PLACE, A PRE -CONSTRUCTION MEEiNG MOTH THE CONTRACTOR OWNER, CESCL, AND
<br />CITY INSPECTOR SHALL BE HELD.
<br />7HE DEPARTMENT OF ECOLOGY REQUIRES THAT LAND DISTURBANCE CONSTRUCTION PROJECTS ONE ACRE OR LARGER RETAIN A CESCL TO
<br />ENSURE THAT THE PROJECT IS /N COMPLIANCE KITH THE CURRENT EROSION, SED{MENTAITON AND WATER QUALITY STANDARDS FOR
<br />EMERGENCY PURPOSED, 714E CESCL CONTACT PER FOR THIS PROJECT IS ELDEN D. McCALL, (425) 903-1399
<br />ON LAND DISTURBANCE CONSTRUCTON PROJECTS OF ONE ACRE OR LARGER 774E CESCL IS RESPONSIBLE FOR:
<br />A. INSPEC77NG THE CONSTRUCTION SITE TO ENSURE THAT ALL CONSTRUCTION SWPPP MEASURES ARE FUNG770NING AS INTENDED.
<br />B. ALLOCA77NG RESOURCES TO REPAIR ALL EROSION CONTROL STRUCTURES THAT ARE IN NEED OF MAINTENANCE.
<br />C° MONITORING DATER QUALITY FOR ANY STORM DRAINAGE THAT LEAVES THE SITE.
<br />D. AND HAVE THE AUTHORITY TO STOP AND/OR REDIRECT CONS7RUC770N AC77077ES DEEMED NECESSARY 70 PROTECT THE
<br />ENVRONMENT
<br />SHOULD BMP PERFORMANCE GOALS NOT BE ACHIEVED, THE ONLY CONSTTRUC77ON AC77VI77ES THAT SHALL BE ALLOWED ARE THE REPAIR
<br />OF EXIS77NG EROSION CONTROL S77?UCTURES, INSTALLA77ON OF ADD17701VAL BMP'S TO MINIMIZE THE 7RANSPORT OF SEDIMENT OFFSITE, OR
<br />THOSE AC77077ES 771AT DO NOT DISTURB EXPOSED EARTH AND DO NOT HAVE 774E POTENTIAL TO GENERATE ADDIRONAL SEDIMENT:
<br />5 STABILIZED SOILS:
<br />PROVD2 W&ONRY AND 110MAW SOL STABSU770Y TO ALL WORDO SOW WMMY M PRWCT
<br />SM FROM OCTOBER I UNM APRE 30, NO MFOSED S4,7L MAY RMM &POEND AN01 017MMO FOR MORE THAN TWO
<br />DAYS, AFTER MAY I, NO MOSED SOH, MY AMM WOSED AND UMOMMFOR MORE Iffiff EMN DAYS.
<br />.B Sa C120 'Y AM PAWAM9 ST100r,
<br />CI21 MULCHING
<br />C122 NETS AND BLANKETS
<br />CI23 PL&lilyc CovEavel
<br />C124 SODDING
<br />C125 TOPSOILING
<br />C126 POLYACRYLAMIDE FOR SOIL PRO7EC770N
<br />C130 SURFACE ROUGHENING
<br />C131 GRADIENT TERRACES
<br />C140 DUrl CONTROL
<br />6. PROTECT SLOPES.
<br />CUT AND FILL SLOPES SHALL BE PROTECTED FROM EROSIVE AND CONCEN7RA7ED FLOWS UN77L PERMANENT COVER AND DRAINAGE
<br />CONVEYANCE SYSTEU ARE IN PLACE,
<br />BMP's: C120 7EMPORARY AND PERMANENT SEEDING
<br />C121 MULCHING
<br />C122 NETS AND BLANKETS
<br />C123 PLASTIC COVERING
<br />C124 SODDING
<br />C130 SURFACE ROUGHENING
<br />C131 GRADIENT TERRACES
<br />C200 INTERCEPTOR DrXE AND SWALE
<br />C201 GRASS -LINED CHANNELS
<br />C203 WATER BARS
<br />C204 PIPE SLOPE DRAINS
<br />C205 SUBSURFACE DRAINS
<br />C206 LEVEL SPREADER
<br />C207 CHECK DAMS
<br />C208 TRIANGULAR SILT DIKE (GEDTEXIXE-ENCASED CHECK DAM)
<br />7. PROTECT PERMANENT DRAIN INLETS:
<br />ALL PERMANENT STORM DRAIN INLETS WILL BE PROTECTED FROM SEDIMENT AND SILT -LADEN WATER.
<br />Byp's. C220 STORM DRAIN INLET PROIEC77ON
<br />8. STABILIZE CHANNELS AND OUTLETS:
<br />TEMPORARY AND PERMANENT CONVEYANCE SYSTEMS SHALL BE STABILIZED TO PREVENT EROSION DURING AND AFTER CONSTRUC770N.
<br />BM'P s: C122 NETS AND BLANKETS
<br />C202 CHANNEL LINING
<br />C207 CHECK DAMS
<br />C209 OUPLET PR07EC77ON
<br />SlT,E GPM DINGA ND S WPP NOTES
<br />PERMANENT COVER BMP (HYDROSEEDING GE'EN L NOTES)
<br />1.
<br />EROSION AND SEDIMENTARON CONTROL SHALL COMPLY WJd74 THE MINIMUM REQUIREMENTS OF THE CITY
<br />CONSTRUCTION ACCEPTANCE BILL BE SUBJECT TO FELL ESTABLISHED GROUND COVER THAT FULFILLS:
<br />NONCOMPLIANCE W IH 774E EROSION C0N7ROL REQUIREMENTS WATER QUALITY REQUIREMENTS AND CLEARING
<br />LIMITS WOI_AT7lONS MAY RESULT IN REVOCARaON OF PROJECT PERMITS PLAN APPROVAL AND BOND
<br />1. THE REQUIREMENT OF 774E APPROVED CONS77?UC77ON PLANS AND 771E CITY
<br />FORECLOSURES
<br />2. ALL LAND DISTURBANCE AREAS SUCH AS DETENTION FACILITIES, ROADWAY BACK -SLOPES, ETC. SHALL
<br />2
<br />774E STORMWATER POLLU770JV PREVEIV77ON (SWPP) BMP'S SHALL BE CONSTRUCTED PRIOR TO ANY LAND
<br />BE SEEDED WI7H A PERENNIAL GROUND COVER GRASS TO MINIMIZE EROSION. GRASS SEEDING DILL BE
<br />DISTURBANCE OR EXTENSIVE LAND CLEARING IN ACCORDANCE W17H THE APPROVED TARGETED PLAN. THESE
<br />DONE USING AN APPROVED HYDROSEEDER OR AS OTHERWISE APPROVED BY THE CITY`
<br />FACIL177ES MUST BE SATISFACTORILY MAINTAINED UNTIL CONS77RUC77ON AND LANDSCAPING IS COMPLETED
<br />AND POTENTIAL FOR ON -SITE` EROSION HAS PASSED. SEDIMENT LADEN W47ERS SHALL NOT ENTER THE
<br />J. PREPARATION OF SURFACE: ALL AREAS TO E SEEDED SHALL BE CUL77VATED TO THE SAIISFAC77ON
<br />NATURAL DRAINAGE SYSTEM:
<br />OF THE CITY INSPECTOR THIS MAY BE ACCOMPLISHED BY DISCING, RAKING HARROWING OR OTHER
<br />ACCEPTABLE MEANS
<br />3,
<br />THE DEVELOPER/CESCL IS RESPONSIBLE FOR THE WATER QUALITY AS DETERMINED BY THE MONITORING
<br />PROGRAM, ESTABLISHED BY THE ENGINEER. THE PROJECT ENGINEER°SjCESCL NAME AND PHONE NUMBER
<br />4. IMMEDIATELY FOLLOWING FINISH GRADING, PERMANENT VEGETA77ON (CONSIS7TNG OF RAPID, PERSIS7ENT
<br />ARE: MAC ENGINEERING, LLC. @ (425) 903-1399.
<br />AND LEGUME) WILL BE APPLIED. (MIN/MUM E011 PER ACRE). THIS IS TO INCLUDE 774E FOLLOWING. ° 40%
<br />4.
<br />ALL SITE WORK MUST COMPLY TO CHAPTER 18 OF 711E INTE'P.NAPONAL BUILDING CODE AND CITY
<br />PERENNIAL RYA 40% RED FESCUE: 107o WHITE DUTCH CLOVER, 10% COLONIAL BENTGRASS ,HYDROSEEJ
<br />DEVELOPMENT CODE (LATEST EDITIONS).
<br />REQUIRED,
<br />5.
<br />ALL LAND DIST IRBANCE FORK SHALL BE PERFORMED IN ACCORDANCE WITH CITY STANDARDS
<br />5. FERTILIZER: SHALL BE APPLIED AT 400,E PER ACRE OF 10-20-20 (10 I6. PER 1,100 SQUARE FEET) OR
<br />6.
<br />IF CUT AND FILL SLOPES EXCEED A MAXIMUM OF TWO FEET HORIZONTAL TO ONE FOOT VER77CAL, A ROCK
<br />EQUIVALENT
<br />OR CONCRETE RETAINING FALL MAY BE REQUIRED. ALL ROCK RETAINING MALLS GREATER THAN FOUR (4)
<br />FEET IN HEIGHT ARE TO FOLLOW CITY SPECIFICATIONS AND TO BE DESIGNED AND CER77FIED BY A CIVIL
<br />9. CONTROL POLLUTANTS °
<br />ENGINEER EXPERIENCED IN SOILS MECHANICS ALL BALLS EXCEEDING 30" HIGH SHALL HAVE A 4' HIGH
<br />POTENTIAL POLLUTANTS
<br />ALL FOLLOTAM, INC6UDS9 =21MWICERMAIS, O -SITE' A=G TAM AM BAVOEMOff DEBRIS
<br />CHAIN LINK FENCE ALONG TOP.
<br />MU DD HANDLED AAW D OSM OF 1N A MANNO MT DOBS NOT CWAMNAM STORNWATIR.
<br />STOCKPILES ARE TO BE LOCATED SUCH THAT SEDIMENT !MILL NOT LEAVE SITE: TEMPORARY COVER (BMP's)
<br />ERE ARE THREE TYPES OF POTENTIAL POLLUTANTS THAT THIS SWPPP IS INTENDED TO ADDRESS:7.
<br />GIST CONOM G
<br />SHALL CONSIST OF HYDROSEEDING, MULCHING, OR COVERING DISTURBED AREAS AND STOCK PILES W1T74
<br />1. HAZARDOUS CHEMICALS
<br />C152 SAWCUT7TNG AND SURFACE POLLUTION PREVEN-17ON
<br />PLASTIC SHEETING.
<br />2. PETROLEUM PRODUCTS
<br />CI53 MATE= DEMMY, B70RAGL AND COWSINGM
<br />&.
<br />STRUCTURAL BACKFILL AND COMPACTION OF VAULT, ROCKERY, RETAINING WALL FOOTINGS AND WALLS, AND
<br />J. SEDIMENT
<br />CI54 FASUOUT AMA
<br />ROADWAY TRENCH RESTORA770N SHALL BE MONITORED INSPECTED, AND COMPACTON TESTED BY A
<br />C250 CONSTRUC77ON STORMWATER CHEMICAL TREATMENT
<br />LICENSED GE07ECHNICAL ENGINEER. FIELD DENSITY TESTS SHALL INDICATE A MINIMUM COMPAC77ON OF 957.
<br />REASONABLE CARE AND DISCRE77ON SHALL BE EXERCISED TO PREVENT DAMAGING THE ENVIRONMENT
<br />C251 CONSIRUC77ON STORMWATER FIL7RA77ON
<br />OF MAXIMUM DENSITY DETERMINED IN ACCORDANCE WITH ASTM D-1557 70 (MODIFIED PROCTOR).
<br />THROUGH A RELEASE OF ANY OF THE THREE TYPES OF POLLU770N. THIS SNPPP /S TO BE CONSIDERED A
<br />C252 TREATING AND DISPOSING OF HIGH PH WATER
<br />COMPACTION TEST RESULTS TO BE SUBMITTED TO CITY Wi774 AS -BUILT DRAI>IIfNGS
<br />GUIDE, AND REPRESENTS ONLY THE MINIMUM STANDARD OF CARE TO BE PRACTICED DURING 774E
<br />CONSTRUC77ON PHASE OF THIS PROJECT. A CER77FIED EROSION AND SEDIMENT CONTROL LEAD (CESCL) SHALL
<br />1O CONTROL DEWATERING.
<br />9.
<br />F ALL H B H
<br />THE SURFACE OF ALL SLOPES SHALL BE COMPACTED. THIS MAY BE ACCOMPLISHED BY OVER -BUILDING 774E
<br />BE RESPONSIBLE FOR EVALUA77NC THE COND17701VS AND POLLUTON P07EN71AL ON 774E PROJECT SITE AT ALL
<br />CLEAN, NON -TURBID DE -WATERING WATER CAN BE DISCHARGED TO SYSTEMS TRIBUTARY TO OR DIRECTLY INTO SURFACE WATERS OF
<br />SLOPES, THEN G BACK FINAL GRADES, OR BY RUNNING THE COMPACTOR OVER ;TIE SLOPE
<br />77MES AND DETERMINING WHAT ADDITIONAL MEASURES NEED TO BE ENACTED TO PROTECT 714E ENVIRONMENT.
<br />THE STATE, PROVIDED THE DE -WATERING FLOW DOES NOT CAUSE EROSION OR FLOODING TO RECEIVING W47ERS HIGHLY TURBID OR
<br />EACH FILL LIFT IS BEING PLACED. ALL SLOPES SHALL BE COMPACTED BY THE END OF EACH WORKING DAY.
<br />7VS MY INCLUDE STOPPING CONSTRUCTON UN77L CONDITIONS CHANGE SUCH THAT THE DANGER TO 774E
<br />CONTAMINATED DE -WATERING WATER SHALL BE HANDLED SEPARATELY FROM STORMWA TER.
<br />10.
<br />EARTH QUAN7777ES (CUTS & FILLS) SHOWN ON PLANS ARE ES71MATES ONLY AND ARE NOT ADJUSTED FOR
<br />ENVIRONMENT HAS BEEN MINIMIZED.
<br />EXPANSION OR COMPAC77ON. 774E CONTRACTOR IS RESPONSIBLE FOR VERIFICA71ON OF ACTUAL QUAN7177E5
<br />BMP'SC203 WATER BARS
<br />AS REQUIRED.
<br />C236 VEGETATIVE FILTRAT70N
<br />11.
<br />AREAS TO RECEIVE FILL SHALL BE PREPARED BY REMOVING UNSUITABLE MATERIAL SUCH AS CONCRETE
<br />RDG SCHEMICALS
<br />11. MAINTAIN BMPs:
<br />SLABS 7REE STUMPS, BRUSH, AND TRASH
<br />HAZARDOUS CHEMICALS, SUCH AS CLEANING AGENTS AND SOLVENTS, SHALL BE STORED IN AN APPROVED
<br />IGG CAD IIPO S IOff NARTC,G OF CD 17 D � COMPLY
<br />12
<br />FILL MATERIALS SHALL BE AS SPECIFIED IN GENERAL A107E 1., UNLESS SHOWN OTHERIMSE ON PLANS
<br />CHEMICAL STORAGE FACILITY(IES), LOCATED IN THE EQUIPMENT STAGING AREA. WHEN USING CHEMICALS
<br />OIYAL AT TM W OF PPOC�
<br />DURING CONSIRUC77ON AC7716TY, CARE SHALL BE TAKEN TO GUARD AGAINST SPILLAGE. IN THE EVENT OF A
<br />BMP'S°
<br />13
<br />LAND DISTURBANCE FROM OCTOBER 1st TO MARCH 31st IS NOT PERMITTED WTHOUT SPECIFIC APPROVAL.
<br />CHEMICAL RELEASE, THE APPROPRIATE AU7HOR177ES ARE TO BE N077FIED AND THE SPILL IS TO BE CLEANED
<br />CI50 MATIRMS ON HOD
<br />UP IMMEDIATELY.
<br />C160 CER71FIED EROSION AND SEDIMENT CONTROL LEAD
<br />14.
<br />STABILIZING EXPOSED SOIL. THE CONTRACTOR SHALL STABILIZE DENUDED AREAS AND SOIL STOCK PILES AS
<br />FOLLOWS:
<br />12. MANAGE 7HE PROJECT
<br />PP AGM IN A COORM2M EffORT BY M PROW7 NNAGER, CONMCTOR, NGWRE, AND
<br />IF PERMIT70, FROM OCTOBER 1 TO APRIL 30, NO SOIL MAY REMAIN EXPOSED FOR MORE THAN 2 DAYS
<br />PETROLEUM PRODUCTS
<br />P, CTO� SWPPP'� DD .MOD A GE AT CONSTRUCTION I T
<br />6.
<br />FROM MAY 1 TO SEPTEMBER 30, NO SOIL MAY REMAIN EXPOSED FOR MORE THAN 7 DAYS
<br />SOIL STOCKPILES SHALL E STABILIZED OR PROTECTED WITH SEDIMENT RETEN774N BMPs WITHIN 24 HOURS
<br />OR C® .BAPS A SIG ON .OLD P OF POLLUTANTS TO WA OF S'TAT9 D G
<br />c.
<br />OF FORMAT70N.
<br />7HE CONSTRUCTION S17E IS TO BE PROTECTED AGAINST EXCESSIVE PETROLEUM POLLUTION. ALL CONSTRUCTON
<br />CON UCI7ON PROCESS, �T C O� DTCO�N, COl ON A �
<br />EQUIPMENT AND VEHICLES SHALL HAVE A REGULAR MAINTENANCE SCHEDULE AS RECOMMENDED BY 7"riE PRODUCT
<br />(OT b'WPPP CS) SHM BN HALMD AND TO CETY LVERECTOR AND TM PRORCT ENGMEM AM TO DS
<br />15,
<br />ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED WITHIN 30 DAYS AFTER
<br />MANUFACTURER WITH PAR77CULAR AT7EN770NICAE BEING PAID TO LOCA17ONS THAT ARE COMMONLY KNOWN TO
<br />CONTACTRU AM RMEW OF TO ATLON.
<br />FINAL FINAL SITE STABILIZATION IS ACHIEVED OR AFTER THE TEMPORARY BMPS ARE NO LONGER NEEDED.
<br />LEAK LUBRICANTS UPON DISCOVERY OF AN UNSA775FACTORY PART, THAT WHICLEjEQUIPMENT SHALL NOT BE
<br />TRAPPED SEDIMENT SHALL BE REMOVED OR STABILIZED ON SITE. DISTURBED SOIL AREAS RESUL77NG FROM
<br />OPERATED UN71L IT HAS BEEN FIXED. A00/710NALLY, ALL OIL AND REFUELING OPERATIONS ARE TO BE CONDUC7ED IN
<br />BMP'S° C150 MAMwo ON HM
<br />REMOVAL SHALL BE PERMANENTLY STABILIZED.
<br />A DESIGNATED AREA THAT HAS BEEN PREPARED TO PREVENT THE LOSS OF SPILLED OILjFUEL TO THE ENVIRONMENT
<br />C160 CER71FIED EROSION AND SEDIMENT CONTROL LEAD
<br />7HROUGH THE USE OF A LINER; SPILL TRAP OR OTHER MEANS
<br />CI62 SCMULNG
<br />WET WEATHER GRADING NOTES
<br />13 PR07ECT ON -SITE BMPS°
<br />ON-SM S"EffAM AffiVACEMUD 'S USED POD RUNUff ROM POOH AM OTM MM SUNACES INCLUE YVLL
<br />1.
<br />THE CONS7RUC770N SEQUENCE SHALL BE MODIFIED TO MINIMIZE THE AREA OF SOIL EXPOSED.
<br />®� � �.
<br />SEDIMENT
<br />D ON, ROOF DOWNSPOUT 77ON ORDEP Obi S S, P ORA OUT C0 GT 0flS, BAN
<br />GAMZVS, B10NI7ON SISMS, PARAMBW PAS , SHM FLOW DEPARON, AN COlVCfffM= 1101T DISPEEMON.
<br />'S
<br />2.
<br />EARTHEN AREAS THAT ARE SUBJECT TO C'ON7RIBUTTNG SEDIMENTS DURING STORM EVENTS AND WHERE EARTH
<br />MOVEMENT IS NOT ANTICIPATED FOR 48-HOURS SHALL BE STABILIZED USING THE FOLLOWING BLIPS°
<br />THE RELEASE OF SEDIMENT TO 774E ENVIRONMENT SHALL BE PREVENTED AT ALL 77MES IHE FOLLOWING BLIPS ARE
<br />ON TBE RM TO BE USED POD THISE B SHALL DN PROTECTED FROM SMfAffON AND CO ACTION DUMG
<br />HYDROSEEDING & MULCHING (4" 774ICK STRAMI) OR COVERING DISTURBED AREAS AND STOCK PILES WITH PLASIIC
<br />TO BE CONSIDERED THE MINIMUM PR07ECIION MEASURES.°
<br />COMMUMON .BY SRqVfflMWG M CONSMUCTIONIV A FAMON TO EMALL TOSE BAPS AT M LATTIR PART OP IIN
<br />SHEEIINO
<br />CONSTRUCEON GRADRYG OPERATIONS, DT &CLOHO lineuj?MET FROM TO D 'S° OffA d �
<br />°S
<br />Ci70N ECONSIENT,IVEN SHALL
<br />1. THE DISTRINIED fTRACCONKING OF MUD/SEDIMENT ONTO ROADS FROM CVIA
<br />MSG 57ON S ATdON CONTROL B B AD.O ONAL .13E S FOR PROTECMG
<br />3.
<br />WET WEA771ER 7ESC MEASURES KILL BE EXPANDED TO INCLUDE CONSTRUCTON AREA STAB/LIZA77ON,
<br />ENTRANCE,
<br />A EN
<br />BE PREVENTED. THE CONSTRUCTION SITE SHALL BE ACCESSED VIA A ROCK
<br />R 'S D G CON 'd O ON PROCESS, G ON bU.FSSTR G CT10iU ,
<br />(EXTEND COAISTRUC77ON ENTRANCE), SEDIMENT 7RAPS, AND ADDITIONAL SILT FENCES, IF NECESSARY. WINTER
<br />TENSTRUF N T
<br />UNDERLAIN BY A GOO -TEXTILE FABRIC. THE ENTRANCE SHALE BE EXTENDED IF NECESSARY 0
<br />G CTON AT AL STAGS OF CON UCffON PIROC MC'L IO
<br />COND177ONS TEMPORARY EROSION & SEDIMENT CONTROL BMP'S° FROM OCTOBER 1 TO APRIL 30. NO SOIL MAY
<br />PROVIDE ACCESS TO THE EMPLOYEE PARKING AND EQUIPMENT STAGING AREAS PRIOR TO LEAVING THE
<br />NG AN EQUIPMENT
<br />SP C B9MONS M IY.AL F OF AL
<br />REMAIN EXPOSED FOR MORE THAN 2 DAYS, OTHERWISE NO SOIL MAY REMAIN EXPOSED FOR MORE THAN 7 DAYS
<br />COVER PRACTCES° THE EXIS7ING E-GETARON SHOULD BE LEFT UNDISTURBED WHERE POSSIBLE TO LIMIT
<br />CONSTRUCTION SITE, CONSTRUCTION EQUIPMENTjVEHICLES S14ALL BE INSPECTED FOR MUDjSEDIMENT AND ALL
<br />BMP's C102° BUFFER ZONE
<br />EROSION, DISTURBED AREAS SHALL BE COVERED WTH MULCH, SOD, PLASTIC OR MATTING STOCKPILES OR
<br />WHEELS ARID SURFACES ARE TO BE BRUSHEDICLEANEDjWASHED AS NECESSARY PRIOR TO LEAVNG THE
<br />C103: HIGH WS131UTY FENCE
<br />SLOPES DEEPER THAN 2:1 SHALL BE STABILIZED OR PROTECTED WITH SEDIMENT RETENTION B14PS WITHIN 24
<br />CONSTRUCTION SITE ADD1770NALLY THE EXIS77NG PAVEMENT OF ROAD SYSTEMS ADJACENT TO THE PROJECT
<br />C200: INTERCEPTOR DIKE AND SWALE
<br />HOURS OF FORMA7701. STRUCTURAL PRACTCES: SILT FENCES AROUND 771E PERIMETER WILL PREVENT SEDIMENT
<br />SITE WILL BE SWEPT DAILY WHEN SEDIMENT IS TRACKED OFF SITE.
<br />C201: GRASS LINED CHANNELS
<br />LADEN WHERE ACTIVE GRADING IS IN PROGRESS, THE DIRECTOR MAY EXTEND 7HE DEADLINE FOR SOIL
<br />C207.- CHECK DAMS
<br />STABILIZATON UPON DETERMINING THAT THE LIKELIHOOD OF EROSION IMPACTS IS LOW BASED ON THE TYPE AND
<br />2. COVER MATERIALS (I.E. STRAW, MULCH OR PLASTIC SHEETING SHALL BE STORED ON SITE IN SUFFICIENT
<br />C206: TRIANGLAR SILT DIKE (TSD) (GE07EXRLE-ENCASED CHECK DAM)
<br />AMOUNT OF SOIL EXPOSED, SITE TOPOGRAPHY 774E P07EN77AL FOR DISCHARGE TO CRI77CAL AREAS AND LAKES
<br />AND OTHER FACTORS DISTURBED AREAS SHALL BE COVERED WITH MULCH, SOD, PLASTIC OR MATTING. GRADING
<br />QUAN77RES SUCH THAT ALL PORTIONS OF EXPOSED EARTH CAN BE COMPLETELY COVERED TO PREVENT EROSION.
<br />C231: BRUSH BARRIER
<br />CONSTRU0770N SHALL BE TIMED AND CONDUCTED IN STAGES TO MINIMIZE 501E EXPOSURE.
<br />RUNOFF FROM, THE AREA THAT IS PROPOSED TO BE DISTURBED SHALL BE INTERCEPTED BY INTERCEPTOR
<br />CHANNELS, AND CONVEYED TO A TEMPORARY SEDIMENTA77ON POND. DISCHARGE FROM THE TEMPORARY POND
<br />CT OS
<br />C23:
<br />34: VEGETATED STRIP
<br />4.
<br />SOILS SHALL NOT BE DISTURBED EXCEPT FOR ACTUAL CONSTRUCTION ACTlVITTES PARKING 1S ALLOWED ONLY ON
<br />WILL BE 7HROUGH A GRAVEL F1L7ER CONE TO THE EXIS77NG STORM SYSTEM.
<br />PAVED ANDjOR GRAVEL SURFACES
<br />3 7HE PLANNED CONSTRUC7ION AC77W77ES SHALL E EV4LUA7ED ON A DAILY BASIS TAKING INTO CONSIDERATION
<br />COE EROSION AND SEDIMENTATION CONTROL NOTES_
<br />5.
<br />SLOPES &Z AND GREATER WITHOUT ESTABLISHED GROUNDCOVER WILL E STABILIZED 97H PLASTIC SHEETING,
<br />774E LATEST WEA7HER FORECAST. THE WEATHER FORECAST SHALL DICTATE WHETHER LARGE-SCALE FAR771
<br />6-MIL (MINIMUM). THE SHEE77NG SHALL BE ANCHORED NPH SAND BAGS LOCATED 5-FEET APART ON THE
<br />MOVING OPERA77ONS SHALL COMMENCE OR CON77NUE IF PRECIPITATION OCCURS DURING CONSTRUC714N AC77WTY,
<br />PERIME7ER AND 10-FEET ON CENTER ON THE REMAINDER OF 174E SHEEING. A MINIMUM OF 2-FEET OVERLAP IS
<br />AND IS INTENSE ENOUGH TO GENERATE RUNOFF ALL EARTH MOVING AC77077ES SHALL CEASE AND EXPOSED
<br />1. APPROVAL OF 7T41S EROSIONjSEDIMENTATION CONTROL (ESC) PLAN DOES NOT CONS71TU7E AN APPROVAL OF
<br />REQUIRED FOR OVERLAPPING SHEETS
<br />EARTH SHALL BE COVERED TO PREVENT EROSION. WHILE PRECIPITATION PERSISTS THE ONLY CONSTTRUC7701V
<br />PERMANENT ROAD OR DRAINAGE DESIGN (EG. SIZE AND LOCA77ON OF ROADS PIPES, RESTRICTORS CHANNELS
<br />AC71WTY THAT SHALL BE ALLOWED' ARE THOSE AC711177ES REQUIRED TO MAINTAIN EXIS77NG EROSION CONTROL
<br />RETEN770AI FACILITIES U77LITTES).
<br />6.
<br />WATER DISCHARGED FROM THE SITE WILL BE MONITORED FOR 3URBIDITY THE MAXIMUM ALLOWABLE
<br />MEASURES INSTALL NEW EROSION CONTROL BMP'S AS NECESSARY AND NON-ERQSIOIVjSEDIMENT GENERA1IfUG
<br />TURBID(];° OF DISCHARGED WATER WILL BE 5 NTU OVER BACKGROUND.
<br />AC77W77ES
<br />2 THE 1MPLEVENTA77ON OF THESE ESC PLANS AND 774E CONSTRUC770A6 MAINTENANCE, REPLACEMENT, AND
<br />UPGRADING OF 774ESE ESC FACILITIES IS THE RESPONSIBILITY OF 774E APPLICANTjCONTRACTOR UIV77L ALL
<br />7:
<br />WHEN RAINFALL IS HEAVY (DEFINED AS RAINFALL HARD ENOUGH TO PRODUCE SEDIMENT RUN-OFF FROM
<br />CONSTRUCTION IS COMPLETED AND APPROVED AND VEGETA770NILANDSCAPING IS ESTABLISHED.
<br />EXPOSED DIRT), ALL EXPOSED EARTHWORK SHALL BE COVERED. NO OTHER CONSTRUCTION ACTIVITY SHALL
<br />4. CONS7RUC71ON ACTMTES SHALL BE PHASED TO MINIMIZE THE SURFACE AREA OF EXPOSED EARTH AT ANY
<br />OCCUR ON PERVIOUS SURFACES DURING THESE PERIODS OF HEAVY RAIN
<br />GIVEN TIME 774E CLEARINGjGRADING LIMITS ARE IDENTIFIED ON 771E PLAN SHEET.
<br />J. THE BOUNDARIES OF 774E CLEARING LIMITS SHOWN ON THIS PLAN SHALL BE CLEARLY FLAGGED IN 771E FIELD
<br />PRIOR TO CONSTRUCTION DURING 774E CONSTRUCTION PERIOD, NO DISTURBANCE BEYOND THE FLAGGED
<br />&.
<br />ALL DRAINAGE SWALES SHALL BE FULLY VEGETATED. SWALES SHALL BE SODDED IF THE VEGETARON GROWING IN
<br />5. SPECIFY SUP FOR CLEANING PAVEMENT SURFACES AT THE END OF EACH WORKING DAY
<br />CLEARING LIMITS SHALL BE PERMITTED. 7HE FLAGGING SHALL BE MAINTAINED BY THE APPLICANTjCON7RACTOR
<br />774E SWALE' IS INSUFFICIENT TO PROVIDE IVA7ER QUALITY AND TO PREVENT EROSION OF 774E SWALE,
<br />FOR THE DURA770N OF CONSTRUCTION.
<br />9.
<br />FIL7ER FABRIC (CE07EX77LE FABRIC) SHALL BE INSTALLED BENEATH THE EN77RE CONSTRUC7ION ENTRANCE
<br />4. 774E ESC FACIL177ES SHOWN ON THIS PLAN MUST BE CONSTRUCTED IN CONJUNCTION 141TH ALL CLEARING AND
<br />GRADING AC77167TES, AND IN SUCH A MANNER AS TO ENSURE THAT SEDIMENT AND SEDIMENT LADEN WATER DO
<br />10.
<br />IF 771ERE IS A MEASURABLE INCREASE IN THE TURB°D!n° OF THE RECEIVING WATER GREATER THAN 5 NTUS 77-IE
<br />NOT ENTER THE DRAINAGE SYSTEM, ROADWAYS, OR WOLA7E APPLICABLE WATER QUALITY STANDARDS
<br />WATER IN THE TEMPORARY SEDIMENTA770M POND SHALL BE PUMPED TO UIVDIS77JRBED VEGETA77ON ON SITE.
<br />S THE ESC FACILITIES SHOWN Ohl THIS PLAN ARE THE MINIMUM REQUIREMENTS FOR ANTICIPATED S17E
<br />CONDITIONS DURING 771E CONSTRUCTION PERIOD, THESE ESC FACIL177ES SHALL BE UPGRADED AS NEEDED FOR
<br />BMP DOTES.
<br />UNEXPECTED STORM EVENTS AND TO ENSURE THAT SEDIMENT AND SEDIMENT -LADEN WA7ER DO NOT LEAVE
<br />771E SITE
<br />1. COVER PRACTICES.°
<br />6. THE ESC FACIL171ES SHALL BE INSPECTED ROU77NELY AND MAINTAINED BY THE APPLICANTjCONTRACTOR TO
<br />77.7E EXIS77NC VEGETA77ON SHOULD BE LEFT UNDISTURBED WHERE POSSIBLE TO LIMIT EROSION. DISTURBED
<br />ENSURE 774EIR CON71NUED FUNC770NING, ESPECIALLY AFTER STORM EVENTS
<br />AREAS SHALL BE COVERED WITH MULCH ANDIOR MATTING STOCKPILES OR SLOPES STEEPER THAN 2:1
<br />SHALL BE COVERED WI7H PLAS77C SHEETING HELD IN PLACE Po#Pd SAND BAGS
<br />7° THE ESC FACILITIES ON INA077VE S17ES SHALL BE INSPEC7ED AND MAINTAINED A MINIMUM OF ONCE A
<br />MONTH OR WITHIN THE 48 HOURS FOLLOWING A MAJOR STORM EVENT.
<br />&. AT NO 77ME SHALL MORE THAN ONE FOOT OF SEDIMENT BE ALLOWED TO ACCUMULATE WITHIN A TRAPPED
<br />CATCH BASIN. ALL CATCH BASINS AND CONVEYANCE LINES SHALL BE CLEANED PRIOR TO PAVING THE
<br />CLEANING OPERA77ON SHALL NOT FLUSH SEDIMENT LADEN WATER INTO THE DOWNSTREAM SYSTEM.
<br />9. STABILIZED CONSTRUC77ON ENNSTALLED AT THE BEGINNING OF CONSTRUC77ON AND
<br />SHALL BEES IADD177ONAL
<br />MAINTAINED FOR 7HE DURA770AIOFC7HE PROJECT MEASURES MAY BE REQUIRED TO ENSURE 77YAT
<br />O E T aT
<br />ALL PAVED AREAS ARE KEPT CLEAN FOR 774E DURA77ON OF THE PROJECT
<br />REVIEWED �� O f l.,
<br />10 THE CONTRACTOR SHALL PROVIDE PERIODIC STREET CLEANING TO REMOVE DEBRIS AND SEDIMENT TRACKED OFF
<br />THE SITE.
<br />11. MEASURES SHALL BE TAKEN TO STOP SEDIMENT FROM EN7ERING SURFACE WATER BODIES IF THE
<br />PROPOSED BMPS
<br />E I E®A D APPROVED
<br />12, BARE ANDjOR DISTURBED SOILS SHALL REMAIN UNCOVERED AND/OR UNSTABILIZED FOR NO MORE THAN 2
<br />DAYS FROM OCTOBER 1 THROUGH APRIL 30, AND FOR NO MORE THAN 7 DAYS FROM MAY 1 THROUGH
<br />ON 77*S DAY OF 2020
<br />SEPTEMBER 30.
<br />BYe
<br />C17Y OF EVERETT ENGINEER
<br />D.
<br />Z.f WASH,
<br />e
<br />DATE REVISION/ISSUED
<br />03119121 ISSUED
<br />CALL 48 HOURSTHE CON7RRACTOR SHALL VERIFY THE LOCATION OF ALL
<br />BEFORE YOU U77LI77ES PRIOR TO ANY CONS7RUC770NL AGENCIES INVOLVED
<br />: SHALL BE N077FIED WITHIN A REASONABLE TIME PRIOR TO
<br />THE START OF CONSTRUC770N.
<br />9;'•s „ G�*,s?'.vizr ,axs e h � �` _ .,. aa:.. � .v`li�%a ..7`.,
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