HomeMy WebLinkAboutR-434002m
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10' 8' 1 12' WESTBOUND
FILTER SHOULD RT. TURN LANE
BLANKET
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zox
•1 1.0
3-
x•
A
OVER 6- COMPACTED TOPSOIL
R/W
AS -BUILT
PAINTED C
30' Rye 30' RIW
I
12' WESTBOUND 11' EASTBOUND
LT. TURN LANE i LANE
1 EX. PA VE_MENT ] 1
1. -
x
1
SAWCUT 1.0' FROM EDGE
OF EX. PAVEMENT
APPL Y (2) 4" COATS OF
AR-4000 ASPAL T EMULSION
1 3" OF ASPHAL T CONCRE7r
OVER 18" OFGRAVEL BASE
OR
3" OF ASPHALT CONCRETE
OVER 3" OF ATO ON 120 OF
COMPACTED ,IPA VEL SUB -BASE
S.E. MAY VALLEY ROAD SECTION
3'-12' 10,
RL TER
BLANKET
9-f 3.
M
Mx-
A
SEE PLAN FOR LOCA 77ON
STA 1+35. 54 TO 3+37. 91
NOT TO SCALE
AS -BUILT
PAINTED C
30' �R/W
1' WESTBOUND 11I EAS78
:DER LANE I LANE
"X PA'vT_M! id I
77AR-4000
lY'7TTr/%-l-T
;4��7 F 4 1
SAWCUT 1.0' FROM EDGE
OF EX. PA VEMENT
APPLY (2) 4- COATS OF
ASPAL T EMULSION
GRASS SOD OR HYDROSEEDING i OVER 18- OF GRAVEL BASE
OVER 6" COMPACTED TOPSOIL OR
3" OF ASPHALT CONCRETE
OVER 3" OF ATB ON 12" OF
COMPACTED GRAVEL SUB -SASE
S.E. MAY VALLEY ROAD SECTION
STA 4+37 63 TO 10+30. 00
NOT TO SCALE
0.25' MIN.
S WALE CROSS SECTION 9 ROCK CHECK DAM
DITCH SLOPE
CHECK DAM SPACING
0 - 5%
150'
5 - 10$
too'
>lox
50'
5'
-- IFFY ROCK INTO
SWALE MIN. 0.25'
NOTE: ROCK SHALL BE 4'° M1NUS .SUMP BEHIND ROCK CHECK DAM
QUARRY ROCK. SHALL BE INSPECTED DAILY &
CLEANED WHEN COLLECTED
DEBRIS EXCEEDS 112 OF iTS
DEPTH.
ROCK CHECK DAM CROSS SECTION
ROCK CHECK DAM DETAILS
NOT TO SCALE
JOIN IS IN FR TER FABRIC SHALL BE SPLICE
AT POSTS USE STAPLES. WRRE RINGS OR
EQUIVALENT 7-0 ATTACH FABRIC TO POSTS
2"K2" BY 14 Go. W9RE OR EQUIVALENT. 1F STANDARD
EQUIVALENT, IF STANDARD STRENGTH FABRIC USED
SWN0774 FABRIC USED-------------------
FIL TER FABRIC -
2' MIN. 2' MNY .. '...:.::'.::. . :::.- : .. .
77/1
AKIN, 4 x4" TRENCH , - -
POSTS 12` MIN. .-. - - ....-.
12 MIN.
MIN. 4x4"" TRENCH
KILL TRENCH 41T1� u u
NA VE SOIL OR-3 4 --1.5
WASHED GRA VEL R QM fECTION _
2"x4" WrOOYJ POSTS STEEL FENCE POSTS
OR EQUIVALENT. POST SPACING MAY BE
114CREASM TO 6' IF WIRE BACKING IS USED
h+lA1NTENANCE _STANDARDS NOTE. FILTER FABRIC FENCES SHALL BE INSTALLED
1, ANY DAMAGE SHALL BE REPAIRED 1MMEDIATEL Y. ALONG CONTOUR W'HENEIIER POSSIBLE.
2. IF CONCENTRATED FL0AS ARE EVIDENT UPHILL OF THE FENCES THEY MUST BE INTERCEPTED
AND CONVEYED 70 A SEDIMENT TRAP OR POND.
J. .IT 15 IMPORTANT TO CHECK THE UPHILL SIDE OF THE FENCE FOR SIGNS OF THE FENCE
CLOGGING AND ACTING AS A BARRIER TO FLOW AND THEN CAUSING CHANNEUZA17ON OF
FLOWS PARALLEL 70 THE FENCE IF THIS OCCURS, REPLACE THE FENCE ANDjOR
REMOVE 771E TRAPPED .SEDIMENT.
4. SEDIMENT MUST BE REMOVED WHEN THE SEDIMENT IS 6" HIGH,
5. IF TFIE F7LTE'R FABRIC HAS DETERIORATED DUE TO ULTRAVIOLET BREAKDOWN, IT SHALL BE REPLACED.
6. WHERE THE SiLT FENCE BORDERS WE71ANDS AREAS, BRIGHT ORANGE FENCING (BELTON INOUSIRiES
STYLE 803; OR EQWIVALENT) SHALL RE USED.
SILT FENCE DETAIL
NOT TO SCALE
RIW
{ UML NOTES
1) ALL CONSTRUC7ION SHALL BE IN ACCORDANCE W17H THE ICING COUNTY
CODE (KCC). ROAD STANDARDS (KCR NCIL'S
_ r_�.inrnnur . rsr an a M4RY &YOR KSiG r APPROVAL. 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 THESE PLANS ALL CORRECTIONS SHALL
BE AT NO ADDITIONAL COST OR LIABILITY TO ICING COUNTY.
2) THE DESIGN ELEMENTS WITHIN THESE PLANS HAVE BEEN REVIEWED
ACCORDING TO THE KING COUNTY DEPARTMENT OF DEVELOPMENT AND
ENVIRONMENTAL SERVICES (DDES) ENGINEERING REVIEW CHECKLIST: SOME
ELEMENTS MAY HA VF BEEN 0VEIRLOOKED OR MISSED BY THE DDES PLAN
REWEWFN ANY VARIANCE FROM ADOPTED STANDARDS IS NOT ALLOWED
UNLESS SPECIFICALLY A Y CI LL Y APPROVED B KING COUNTY PRIOR TO
CONSTRUCTION.
3) APPROVAL OF THIS ROAD, GRADING, AND DRAINAGE PLAN DOES NOT
CONSTITUTE AN APPROVAL OF ANY OTHER CONSTRUCTION (E.G. DOMESTIC
WATER CONVEYANCE, SEWER CONVEYANCE, GAS; ELECTRICAL, ETC.)
4) BEFORE ANY CONSTRUCTION OR DEVELOPMENT ACTIVITY, A
PRECONSTRUC770N MEETING MUST BE HELD BETWEEN THE DDES'S
DEVELOPMENT INSPECTION UNIT. THE APPLICANT, AND THE APPLICANTS
CONSTRUCTION REPRESENTATIVE.
5) A COPY OF THESE APPROVED PLANS MUST SE ON THE JOB SITE
WHENEVER CONSTRUCTION 1S IN PROGRESS.
?SECTION
NOISE SHALL BE LIMITED AS PER ICING COUNTY CODE
SECTION 12.88); NORMALLY, THIS IS 7 A.M. TO 10 P.M. WEEKDAYS AND
9 A.M. TO 10 P.M. ON WEEMENDS
7) IT SHALL BE THE APPLICANT'SJCON IRA C TOR'S RESPONSIBILITY TO
OBTAIN ALL COM57RUC77ON EASEMENTS NECESSARY BEFORE INITIATING OFF -
SITE WORK W7774IN THE ROAD RIGHTS -OF -WAY.
8) FRANCHISED U77LI71ES OR OTHER INSTALLA77ONS THAT ARE NOT
SHOWN ON THESE APPROVED PLANS SHALL NOT BE CONSTRUCTED UNLESS AN
APPROVED SET OF PLANS THAT MEETS ALL REOUIREMENTS OF KCRS CHAPTER
8 IS SUBMITTED TO THE DRESS DEVELOPMENT INSPECTION UNIT THREE
DAYS PRIOR TO CON5772UC770N
9) OA7UM SHALL BE KCAS UNLESS OTHERWISE APPROVED BY DDES.
10) GROUNDWATER SYSTEM CONSTRUCTION SHALL BE WITHIN A RIGHT-OF-
WAY OR APPROPRIATE DRAINAGE EASEMENT, BUT NOT UNDERNEATH THE
ROADWAY SECTION. ALL GROUNDWATER SYSTEMS MUST BE CONSTRUCTED IN
ACCORDANCE WITH SECTION BI 3.02 OF 774E APWA STA AR ND Q
SPECIFICA TIONS
11) ALL UTILITY TRENCHES SHALL BE BACKFILLEII AND COMPACTED TO 95
PERCENT DENSITY.
12) ALL ROADWAY SUSGRADE SHALL BE BACKF7LLED AND COMPACTED TO 95
PERCENT DENSITY (WSOOT 2-06.3).
1J) OPEN CUT77NG OF EXIS77NG ROADWAYS IS NOT ALLOWED UNLESS
SPECIFICALLY APPROVED BY DDES AND NOTED ON THESE APPROVED PLANS
ANY OPEN CUT SHALL BE RESTORED IN ACCORDANCE WITH KCRS 6.03(6)3.
14) THE CONTRACTOR SHALL BE RESPONSIBLE FOR PROVIDING ADEQUATE
SAFEGUARDS; SAFETY OEWCESr PR07EC77W EQUIPMENT, FLAGGERS, AND
ANY OTHER NEEDED AC77ONS TO PR07FCT THE LIFE, HEALTH, AND SAFETY
OF THE PUBLIC, AND TO PR07FCT PROPERTY IN CONNEC77ON WITH THE
PERFORMANCE OF WORK COVERED BY THE CONTRACTOR. ANY WORK WITHIN
THE TRA VE•LED RIGHT -OF WA Y THA T MA Y iN T ERRUPT NORMAL TRAFPC FL OW
SHALL REQUIRE AT LEAST ONE FLAGGER FOR EACH LANE OF TRAFFIC
AFFLICTED. ALL SECTIONS OF THE WSDOT STANDARD SPECIFICATIONS 1-
OZ23 - TRAFFIC CONTROL, SHALL APPLY
"WSTRUC77ON SEi�IJENQE
A,_ CLCARINQ AND GRADING
1. ARRANGE AND ATTEND A PRECONSTRUCT70N CONFERENCE WITH THE
KING COUNTY DDES SITE DEVELOPMENT INSPECTOR (206)296-6645,
KING COUNTY GRADING INSPECTOR (206)296-6610 AND ALL
NECESSARY PAR77E5
2. FLAG THE CLEARING U4417Sy AND BOUNDARY LINE'S
J. INSTALL FILTER FABRIC FENCING.
4. CLEAR AND GRUB THE AREA.
5. GRADE FOR ROADWAY CONSTRUCTION.
6. INSTALL ADD177ONAL EROSION CONTROL DEVICES, AS NEEDED.
Z INSTALL UTILITIES
8. REVEGETATE OR EIRA W MULCH EXPOSED AREAS TO BE LEFT
UNWORKED AND AS DIRECTED BY THE INSPECTOR.
SLOPESDURING
�F i•.
�ffifJ �rI ��,i
/
1 ..
�,
1/11�P1
l
1 �
r�
I
E.
BRING THE NETTING OVER THE BERM AND ANCHOR I T
BEHIND THE BERW.
��yRx��►�tiaa���aza�i�
STRIPS OF NET77NG PARALLEL
TO THE DIRECTION OF FLi•
AND ANCHOR SECURELY BRING NET77NG DOWN TO A LEVEL AREA BFFORE
(SLOPES GREATER THAN J I) TERAMA77NG THE INSTALLA77ON 7URN 7HE END
UNDER, STAPLE AT f2" INTERVALS
PROTECTIVE DETAIL
NO TO SCALE
s- 7_4:� ` 0
Q- K.
r
DRAINAGE NOTES
1) PROOF OF LIABILITY INSURANCE SHALL BE SUBMITTED TO DDES
PRIOR TO THE PRECONSP?UCPON MEETING (KCC 9.04.100.0).
2) ALL PIPE AND APPURTENANCES SHALL BE LAID ON A PROPERLY
PREPARED FOUNDATION IN ACCORDANCE W77H WSDOT 7--02.3(1). 77VS
SHALL INCLUDE LEVELING AND COMPAC77NG THE TRENCH BOTTOM, THE TOP
OF 774E FOUNDATION MATERIAL, AND ANY REQUIRED PIPE BEDDING, TO A
UNIFORM GRADE SO THAT THE ENTIRE PIPE 15 SUPPORTED BY A UNIFORMLY
DENSE UNYIELDING BASE.
3) STEEL PIPE SHALL BE GALVANIZED AND HAVE ASPHALT TREATMENT ,f l
OR BETTER INSIDE AND OU75'IDE (KCRS 7.03).
4) ALL DRAINAGE STRUC
TURES, SUCH As CATCH B ASiNS AND MANHOLES
NOT LOCATED &THIN A TRAVELED ROADWAY OR SIDEWALK, SHALL HAVE
SOLID LOCKING LIDS ALL DRAINAGE STRUCTURES ASSOCIATED WITH A
PERMANENT RE7EN7ION/DETEMPON FACILITY SHALL HAVE SOLID LOCKING
LIDS (KCRS 7.05).
5) ALL CATCH BASIN GRATES SHALL CONFORM TO KCRS DRAW NC NUMBERS
2-013, 2-018, 2-019, OR 2-020, WHICH INCLUDES THE .STAMPING
'OU7FALL TO STREAM, DUMP NO POLLUTANTS" AND PROPERTY OF KING
COUNTY" (KCRS 7.05).
6) ALL DRIVEWAY CULVERTS LOCATED 4WTHiN ICING COUNTY RIGHT-OF-
WAY SHALL BE OF SUFFICIENT LENGTH TO PROVIDE A MINIMUM J:1 SLOPE
FROM THE EDGE OF THE DRIVEWAY 7D THE BOTTOM OF THE DITCH.
CULVERTS SHALL HAVE BEVELED END SEC77ONS To MATCH THE SIDE SLOPE
(KCRS 7. 03(L), ORA WNG NO. 2-- 001).
7) ROCK FOR EROSION PROIEC77ON OF ROADWAY DITCHES, WHERE
REQUIRED, MUST BE OF SOUND QUARRY ROCK, PLACED TO A DEPTH OF 1
FOOT AND MUST MEET THE FOLLOWING SPFCIFICA1T0NS: 4" - 8" / 40X
70% PASSING; 2'-4" ROCK1309 40Z PASSING, AND -2' ROCKIIDJF 20K
PASSING. INSTALLA 77ON SHALL BE 1N ACCORDANCE WITH KCRS Z 02 (B)
DRAWING NUMBER 2- 024.
8) DRAINAGE OUTLETS (STUB -OUTS) SHALL BE PROVIDED FOR EACH
INDIVIDUAL LOT, EXCEPT FOR THOSE LOTS APPROVED FOR INFIL IRA PON
BY KiNG COUNTY 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 F0077NG DRAINS; DRIVEWAYS, YARD DRAINS, AND
ANY 07HER SURFACE OR SUBSURFACE DRAINS NECESSARY TO RENDER
THE LOTS SUITABLE FOR R IN
TENDED NTENDED USE. EACH OUTLET
SHALL HAVE FREE -FLOWING, POSI77VE DRAINAGE TO AN APPROVED
STORMW47FR CONVEYANCESYSTEM
7T'M OR TO AN APPR
OVED OUTFALL
L OCA 770N.
B) OUTLETS ON EACH LOT SHALL BE LOCATED W4TH A RVE-FOOT
HiW 2" X 4" STAKE MARKED "STORM" OR "DRAIN" THE STU9-
OUT SHALL EXTEND ABOVE SURFACE LEVEL, BE VISIBLE AND BE
SECURED TO THE STAKE.
C) PIPE MATERIAL SHALL CONFORM TO UNDERDRAW SPEClF7CAT7ONS
DESCRIBED IN KCRS Z04 AND, IF NON-METALLIC; THE PiPE
SHALL CONTAIN WIRE OR 07HER ACCEPTABLE DETECTION.
D) DRAINAGE EASEMENTS ARE REQUIRED FOR DRAINAGE SYSTEMS
DESIGNED TO CONVEY FLOWS THROUGH INDIVIDUAL LOTS.
E) THE APPLICANTICON7RACTOR iS RESPONSIBLE FOR COORDINA77NG
THE LOCA 7701VS OF ALL STUB -OUT CONVEYANCE LINES WITH
RESPECT TO THE UTILITIES (E.G. POWER, GAS, 7ELEPHONE,
TELEVISION),
F) ALL INDIVIDUAL S7118-OU7S SHALL BE PRIVATELY OWNED AND
MAINTAINED BY THE LOT HOME OWNER
G) ALL STORM DRAIN PIPE SHALL CONFORM TO SECTION 7.03 OF THE 1993
KING COUNTY ROAD STANDARDS THE FOLLOf+iNG PIPES. 5PEC1F7E0 IN
SEC77ON 9-05 OF THE WSDOT1APW4 STANDARD SPECIFICA1701VS ARE
ALLOWED: PLAIN AND REINFORCED CONCRETE STORM SEWER PIPE, ALUMINIZED
TYPE 2 CORRUGATED STEEL, STEEL SPIRAL RIB AND CORRUGATED STEEL
WITH ASPHALT COATING TYPE 7, SPIRAL RiB AND CORRUGATED ALUMINUM,
DUCTILE IRON, POLYVINYL. CHLORIDE (PVC), LINED CORRUGATED POLYETHYLENE
(LOPE) AND SOLID WALL POLYETHYLENE (SWPE) PIPE
EROSION CONTROL MARRA 771►L�
THE EROSION CONTROL FACILITIES DEPICTED ON THESE PLANS ARE
INTENDED TO BE THE MOST UP TO DATE METHODS OF CONTROLLING
SIL T LADEN WA TER FROM LEA 14NG THE 51IF- EVEN WI TH THE STA 7E
OF 774E ART DESIGNS IT IS MOST IMPORTANT FOR THE OWNER AND
CONTRACTOR TO IMPLEMENT THE FACILITIES AT INE PROPER TIME
AND PERFORM CONSTRUCTION DURING 7744ES OF OPTIMUM WEATHER.
THE CONSTRUCTION SEQUENCE GIVES A GENERAL OUTLINE OF HOW THE
EROSION CONTROL PLAN SHOULD BE IMPLEMENTED DURING
CONSTRUCTION. THE CONTRACTOR AND OMVER ARE AWARE THAT
CONSTRUC7ION WILL FOLLOW 774E GENERAL GUIDANCE OF THE
CONSTRUC7ION SEQUENCE BUT EACH SUB -COMPONENT OF
CONSTRUCTION WILL REQUIRE SOME PLANNING, AS FAR AS
IMPLEMENTA71ON OF THE EROSION CONTROL PLAN. IN PLANNING
THE EROSION CONTROL FOR THESE SUB -COMPONENTS, 774E OWNER AND
CONTRACTOR SHOULD FOCUS ON UMI77NG CONSTRUC77ON TO WITHIN A
SINGLE DRAINAGE BASIN, BEGINNING WITH ESTABLISHMENT OF
EROSION CONTROL FACILITIES FOR THE MOST DOWNSTREAM POINT OF
COLLECTION OF STQRMWATER, THEN CON77NUING WITH CONSTRUC7ION
AND INSTALLATION OF EROSION CONTROL FACILITIES UPSTREAM,
THROUGHOUT THE DRAINAGE BASIN.
ADDITIONALLY. DEPENDING ON THE SIZE OF THE AREA FOR EACH SUB --
COMPONENT CON57RUC710N AND 77ME REQUIRED TO CONSTRUCT AND
STABILIZE THIS AREA, THE CONTRACTOR AND OWNER SHOULD UTILIZE
AVAILABLE WEATHER FORECASTING TO DETERMINE AN OPTIMUM
WE'A PIER WNOOW FOR BEGINNING AND COMPLE77NG THE SUB-
COMPONENT.
CLEARING AND GRADING SHALL BE LIA41 TED TO THE MONTHS OF
APRIL THROUGH SEPTEMBER. HOHEVER, BASED UPON REVIEW OF
WEATHER CONDITIONS AND EROSION CONTROL TECHNIQUES, LUST]
MA Y ALLOW 517E DEVEL OPMENT BEYOND THESE DA TFS.
U dl'oseed I ftbb X Ema _ Garmination
Chewings or red fesque 40 98 90
Festuca rubra oar. commutate or Festuca rubra
Annual or perennial rye 40 98 90
Lollum multiflorum or Latium perenn
Redtop or colonial bentgross 10 92 85
Agrostis albs or Agrostis tenuis
White dutch clover 10 98 90
Trifolium repens
MlJLCN 5FECJFICA T10N5
Straw
Appffbafh rl Rage
Revriarka
Air --dried; free from
2"3" thick; 2-3 bales per
Cost-effective protection when applied with adequate
9ft~dN* d and
1000 sq ft. or 2-3 tons
thickness. Hand -application generally requires greater
per acre
thickness than blown straw. Straw should be crimped
to avoid wind blow. The thickness of straw may be
Wood Fiber
reduced by half when used in con ° notion with seedln .
Cellulose
AtOpVwth Inhibiting
Approx. 25-30 tbs. per
Shall be applied with hyiromulcher. Shall not be used
1000 sq. ft. or 1DOO-
without seed and tackffler unless the application rate is
1500 Ibs per acre
at least doubled. Some wood Fiber with very long
fibers can be effective at lower application rates and
Compost
without seed or tackhFer.
No Wslble water or dust
2 thick min.; approx.
More effective control can be obtained by increasing
during handling. Must be
100 tons per acre
thickness to 3" Excellent mulch for protecting Final
purchased from supplier
(approx. 800 lbs per )ard)
grades until iandscop7ng because It can be directly
QNfin8olid Waste Handling
seeded or t111ed Into sail as an amendment. Sources
for compost are available from the Kling County
Commission for Marketing Recyclable Materials at
Chipped Site
296-4439.
Vegetation 0AWqek; sthall be
2" minimum thickness
This is a cost-effective way to dispose of debris from
clearing and grubbing and eliminates the problems
associated with burning. It should generally not be
used on slpoes above approx. 10% because of Its
tendency to be transported by runoff. It Is not
recommended within 200 feet of surface waters. If
seeding is expected shortly after munch, the
decomposition of the chipped vegetation may tie up
nutrients important to grass establishment.
1) APPROVAL OF THIS EROSION%SEDIMENTA RON CONTROL (ESC) PLAN
DOES NOT CONSTITUTE AN APPROVAL OF PERMANENT ROAO OR DRAINAGE
DESIGN (E.0 S12E AND LOCA 77ON OF ROADS, PIPES, RESTRICTORS,
CHANNELS; RETENTION FACILITIES, U77LfPES, ETC).
2) THE IMPLEMEN TA 770M OF THESE ESC PLANS AND THE CONSTRUCTION,
MAINTENANCE REPLACEMENT, AND UPGRADING OF THESE ESC FACIL177ES
IS THE RESPONSIBILITY OF THE APPLICANT/CON7RAC717R ON77L A11
CONSTRUCTION IS APPROVED,
3) THE BOUNDARIES OF THE CLEARING LIMITS SHOWN ON THIS PLAN
SHALL BE CLEARLY FLAGGED IN THE FIELD PRIOR TO CONS7RUC776W.
DURING THE CONS7RUC 77ON PERIOD NODISTURBANCE BEYOND THE FLAGGED
CLEARING LIMITS SHALL BE PERMITTED. THE FLAGGING SHALL BE
MAINTAINED Y B THE A PP LIGANT CONTRACTOR FOR THE DURATION OF
CONSTRUCTION.
4) THE ESC FACILITIES SHOWN ON THIS PLAN MUST BE CONSTRUCTED IN
CONJUNCT70M WITH ALL CLEARING AND GRADING AC77077ES, AND IN SUCH
A MANNER AS TO ENSURE THA T SEDIMENT -LADEN WA TER DOES 140T ENTER
THE DRAINAGE SYSTEM OR VIOLATE APPLICABLE WATER STANDARDS (KCC
9.04.020 AA, KCRS 7090).
5) THE ESC FALIL177ES SHOWN ON THIS PLAN ARE THE MINIMUM
REQUIREMENTS FOR ANTICIPATED SITE CONDiRONS DURING THE
CONSTRUCTION PERIOD, THESE ESC FACILITIES SHALL BE UPGRADED E. G
ADD177ONAL SUMPS, RELOCA 77ON OF DITCHES AND SIL T FENCES, ETC.AS
NEEDED FOR UNEXPECTED STORM EVENTS (KCC 9.04.090 62).
6) THE ESC FACIL177ES SHALL BE INSPECTED DAILY BY 771E
APPLICANTfCON7RACTOR AND MAINTAINED AS NECESSARY TO ENSURE THEIR
CON 77NUED FUNCTIONING (KCC 9.04.090 B2),
7) ANY AREA STRIPPED OF VEGETATION. INCLUDING ROADWAY
EMBANKMENTS, W9-IERE NO FURTHER WORK iS ANTICIPATED FOR A PERIOD OF
15 DAYS, SHALL BE IMMEDIATELY STABILIZED WI7H THE APPROVED ESC
METHODS (E.G. SEEDING, MULCHING, NETTING, EROSION BLANKETS, ETC.)
(KCRS 7.06).
8) ANY AREA NEEDING ESC MEASURES. NOT REQUIRING IMMEDIATE
ATTEN770N, SHALL BE ADDRESSED WITHIN FIFTEEN (15) DAYS
9) THE ESC FACIL177ES ON INACTIVE SITES SHALL BE INSPECTED AND
MAINTAINED A MINIMUM OF ONCE A MONTH OR W77HIN THE 48 HOURS
FOLLOWING A STORM EVENT.
10) AT NO TIME SHALL MORE THAN ONE FOOT OF SEDIMENT BE ALLOWED
TO ACCUMULATE WITHIN A CATCH A IN. A BS LLCATCH BASINS AND
CONVEYANCE LINES SHALL BE CLEANED PRIOR TO PAVING. THE CLEANING
OPERATION SHALL NOT FLUSH SEDIMENT -LADEN WA7E'R INTO THE
DOWNSTREAM SYSTEM.
11) STABILIZED CONSTRUCTION ENTRANCES AND WASH PADS SHALL BE
INSTALLED AT THE BEGINNING OF CONSTRUCTION AND MAINTAINED FOR THE
DURATION OF THE PROJECT ADDITIONAL MEASURES MAY BE REQUIRED TO
ENSURE THAT ALL PA VED AREAS ARE KEPT CLEAN FOR THE AURA 77ON OF
THE PROJECT (RCW 46.61.655).
12) DURING THE 77ME PERIOD OF NOVEMBER 1 THROUGH MARCH A ALL
PROJECT DISTURBED AREAS GREATER THAN 5,000 SOIUARE FEET 7NA T ARE
TO BE LEFT UNWORKED FOR MORE THAN 12 HOURS SHALL BE COVERED BY
ONE OF THE FOLLOWING COVER MEASURES MULCH, SODDING, OR PLASTIC
COVERING.
IJ) ANY PERMANENT RETENT70NIDETEN77ON 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 UL 77MA TEL Y AS
AN 1NFILTRA77ON OR DISPERSION SYSTEM, THE FACILITY SHALL NOT BE
USED AS A TEMPORARY SETTLING BASIN.
14) WHERE SEEDING FOR TEMPORARY EROSION CONTROL iS REOUIRED,
FAST GERMINA 77NG GRASSES SHALL BE APPLIED AT AN APPROPRIATE RATE
(E G. ANNUAL OR PERENNIAL RYE APPLIED A T APPROXIMA TEL Y 80 POUNDS
PER ACRE).
15) WERE STRAW MULCH FOR TEMPORARY EROSION CONTROL IS REQUIRED,
IT SHALL BE APPLIED AT A MINIMUM THICKNESS OF TWO INCHES
16) CLEARING AND GRADING SHALL BE LIMITED TO THE
MONTHS OF APRIL THROUGH SEPTEMBER. HOWEVER, BASED
UPON REVIEW OF WEA 7HER COND177ONS AND EROSION
CONTROL TECHNIQUES, LUSD MAY ALLOW SITE
DEVELOPMENT BEYOND THESE DATES
17) PRIOR TO COMMENCING CONSTRUC7ION AC7TVITIES ON THE
SITE, THE APPLICANT SHALL MARK SEN57 77 VE AREAS IN A
HIGHLY VISIBLE MANNER, AND THESE AREAS(iF ANY) MUST REMAIN SO
MARKED UN77L ALL DEVELOPMENT PROPOSAL AC77W IlES IN THE
VICINITY OF THE SENS177VE• AREA, INCLUDING HOME
CONSTRUCTION, ARE COMPLETED.
18) PRIOR TO COMMENCING CONSTRUCTION ACTIVITIES ON THE
SITE, PERMANENT SURVEY STAKES USING IRON OR CEMENT
MARKERS AS ESTABLISHED BY CURRENT SURVEY STANDARDS
SHALL BESET, DELINEA TING THE BOUNDARY BETWEEN
ADJOINING PROPERTY AND THE SENS171VE AREA 7RACTS(IF ANY).
19) TEMPORARY EROSIONISEDIMENTA77ON CONTROL FACIL177ES
SHALL BE CHECKED DAILY BY THE C0NS7RUC77ON CONTRACTOR
DURING THE CONSTRUCTION OF ROAD AND STORM DRAINAGE
FAC077ES, AND AFTER EVERY SIGNIFICANT RAINSTORM.
BECAUSE 51 TE CONDITIONS MA Y CHANGE DURING THE COURSE
OF THE PROJECT, THE SPECIFIC TEMPORARY EROSION AND
SEDIMENTATION CONTROL MEASURES SHALL BE ADJUSTED,
AS NECESSARY, BY THE CONTRACTOR, SUBJECT TO THE APPROVAL
OF LUSD. SOILS TO BE REUSED ON THE SITE SHALL BE STORED
IN A MANNER WHICH WILL MINIMIZE EROSION.
MET SEASON REQUIREMENTbtQ=-
1. ANY SITE WITH EXPOSED SOILS DURING 774E WFT SEASON (OCIOBE'R 1 TO
MARCH 31) SHALL BE SUBJECT TO THESE NOTES ANY NEWLY SEEDED AREAS
SHALL BE COVERED W7H MULCH. AS MUCH DISTURBED AREA AS POSSIBLE
SHALL BE 10EN71FIED AND SEEDED THE FIRST WEEK OF OCTOBER IN ORDER
TO PROVIDE GRASS COVER FOR THE WET SEASON.
Z THE ALLOWED TIME THAT A DISTURBED AREA CAN REMAIN UNWORKED
W17HOUT COVER MEASURES IS REDUCED TO 12 HOURS
J. STOCKPILES AND STEEP CUT AND FILL SLOPES ARE TO BE PROTECTED IF
UNWORKED FOR MORE THAN 12 HOURS,
4. COVER MATERIALS SUFFICIENTLY TO COVER ALL DISTURBED AREAS SHALL BE
STOCKPILED ON THE SITE
S. ALL AREAS THAT ARE TO BE UNWORKED DURING THE WET SEASON SHALL BE
SEEDED W77FIIN ONE WEEK OF THE BEGINNING OF THE WET SEASON.
6. MULCH IS REQUIRED TO PROTECT ALL SEEDED AREAS
7 17FTY LINEAR FEET OF SILT FENCE (AND THE NECESSARY STAKES) PER ACRE
OF DISTURBANCE MUST BE STOCKPILED ON THE SITE
& CONSTRUCTION ROAD AND PARKING LOT STABILIZATION ARE REQUIRED FOR
ALL SITES UNLESS THE S1 TE IS UNDERLAIN BY COARSE -GRAINED SOIL.
9. SEDIMENT RETENTION iS REQUIRED UNLESS NO OFF -SITE DISCHARGE 1S
AN770PA TED FOR THE SPECIFIED DESIGN STORM.
10. SURFACE WATER CONTROLS ARE REQUIRED UNLESS NO OFF-517E
DISCHARGE IS AN77CIPA TED FOR 774E SPECIFIED DESIGN STORM.
11. PHASING AND MORE CONSERVA77VE BbW5 MUST BE EVALUATED FOR
CONST RUC77ON ACAVI7Y NEAR SURFACE WATERS.
12 THE FREQUENCY OF MAINTENANCE REVIEW INCREASES FROM MONTHLY TO
WEEKL Y.
�3?4' .. . !' , ,1
KING COUNTY D.D.E.S.
Completion Date
Completion Date
Review Engineer
ens Engi
3
5 H. 9ANDERS, P.E.
DEVELOPMENT ENGINEER
A prov I 1}cte
Comments:
6' ...
AML ■
.
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TRIiD ASSOCIATES
Project Management
Chu Engineering
Land S'mrveying
Land Use Planning
Landscape Architecture
Sift Design
11814 115th be, M3 Erklmd, fry 96034-69E3
Tel 425,821.8448 Fax 425,021MI
Tall Free 61i0.466.11756 wwr b iiadsaoo.00m
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GIERALD F. SUCK
MANAGERPROJECT
DESIGNED:
NARK A. REL-ws P.E,
CARD:
DOUG MERRIAM
CHECKED:
MARK maws; P.,E
DATE:
10101198
SCALE.
HOPIZ.: NIA
VERT.: NIA
EXPIRES: 4/2E/03
STAMP NOT V& D
UNLESS SIGNED AND DATED
JOB NUMBER 95.01qq
SHEET NUMBER
2OF4 nm
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R-434002