HomeMy WebLinkAboutErosion Control Project - PLN General - 3/29/2011 SE 114 SEC.29, SW 114 SEC.28- TWN23N, R I W, WM
BELFAIR WA TER DISTRICT
L OW RESERVOIR ACCESS ROAD WA Y
EMERGENCY EROSION CONTROL PROJECT DRAWNG INDEX
I TITLE SHEET
2 PROJECT LAYOUT
3 ROADWAY PROFILE,EROSION CONTROL
Xy
_ _ DETAitS ANO SECTUNS
/ ! A EROSION CONTROL SPECIFIGTglrs k OETMLS
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CLEAN
r R. T rR { :.A^ �4 t r r.. 1! �,.�Y .f' NC CONCRETE
4�c}R� �r^ .�_4F� V. •`� j- 1..^� � ,.:' EDP EDGE OF PAVEMENT
t---- F. +�f' @:• _ ' r ELEV ELEVATION
.' �, •.1 `. f `Y` t�. 3 i�"�`: at'".• EXM DUSTING
FC FWSn GRADE
? LF LINEAR FOOT
E R• , t�PI�I. �y R. - LT LEFT
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p►/�' } STA STATION
•,� - ••el' •+. y A �/►_�.}E y t'" crv,� ''+' , TOC TOP OF CONCRETE
f ', 'r*/. 1h+r.r;T f Y' , TYP TYPICAL
i wf �a� � fi • ;• �,t W/ wrtn
»�iffAE"' �,ti„•2y��r'r A Y fif t'x. a' t KMWTED MATERIAL QUANTITIES
•r '� `t' ,J• ��.•' Per ;, •Y; � '• T Yr CUP CULVERT RO if
t� I.� .�Y. {• fjf-.� a• 2 17•GAP CULVERT .70 LF
T
✓.� f .__re. 'wN•., 3 ROADWAY GEOTE%TNE 800 Sy
'•R ✓ +?'• f r x a EROSION CONTROL RINMET -1DDO Sy
-- ` �'.::rC +_. 3 a ►f wRy %E s 1 4'CLEAN CRUSHED ROCK - 170 TONS
•V. E + 3'MINUS CRUSHED ROCK 3SO TONS
7 A-TO B•DUTY SPALLS -300 Tars
A WIRE BILKED SILT FENCE -430 FEET
I'ti41 4T_L2S1�TI N_MAI
Sf ALE. =20".
_._. 9 s ]��/� (}Ly{i1Pef`Uul SPR/W ASSOC101Es BEL FAIR WATER DISTR/CT
L/y//�\ /,,-21 on—&- % A Grand
� He zio a.Ae..e►—e.a.d .n a Ror 7711E SHEET 4
I _ �°�„�� � �� �" aJ,p:.. .► aassa/sea/r�s-�sei we F
v�
I co INSTALL NEW ROADWAY SURFACE ON "�� �ii n
INSTALL-SEE DETAIL
ON UG1ET: -v- \ co THE EXISTING GRADE. ' •'Y'- �! :�
Gk. ACCESS-SEE DETAIL ON SHEET: �� w
W 2"-CLEAN 1-1/4'CRUSHED ROCK s
U
4"-3'MINUS CRUSHED ROCK !
EX.48"CMP CULVE CLEAN AND SMOOTH EXISTING
13ELFAIR CREE ,� .r
` f GRADE THEN PLACE PERMATEX 2315
h l v J GEOTEXTILE(OR EQUAL)AS A ,
I EXISTING ACCESS ROAD I FOUNDATION FOR THE 3`MINUS �•
WIDTH=APPROX.11 FEET CRUCHED ROCK.
TYPICAL SECTION FROM STA.0+00 TO INSTALL NEW ROADWAY SURFACE ON r�:. ► ti
/f Ff STA.5+50.GRADE ROADWAY EDGES TO EXISTING GROUND. r r'
kp� DRAIN INTO THE SURROUNDING FOREST 2"-CLEAN 1-1/4"CRUSHED ROCK j" r
3'-3"MINUS CRUSHED ROCK
10,
�F� S TYPICAL SECTION�FRM STA,10+50 TO .• `. r
STA.12+40.GRADE ROADWAY EDGES TO INSTALL NEW ROADWAY SURFACE ON +
DRAIN INTO THE SURROUNDING FOREST EXISTING GROUND. o ;�'�•., s
INSTALL WATE0, h WHERE POSSIBLE.OTHERWISE 2%CLEAN 1-1/4"CRUSHED ROCK ~
Lto
AT X 'p �� p CONSTRUCT A SMALL ROCK LINED DITCH 3"-3'MINUS CRUSHED ROCK STA.1 SHEET
2+ 0�50, ER GG 9� ON THE LOW SIDE. y
SEE SHEET WATER STREAM CHANNEL-YEAR AROUND ¢ REGRADE AND LEVEL APPROX.9,000 SF
BAR RETAIL. �tS'� SPRING FED FLOW O it OF THE DISTRUBED AREA ABOVE THE : �•" i
�0 N ' p WATER RESERVOIRS.HYDROSEED THE �, t. - t, �
Q
w DISTURBED AREA THEN APPLY 6"OF
w y STRAW.
��— TYPICAL SECTION FROM STA.5+50 TO w
x
STA.10+50 THEN STA.12+40 TO STA.
z
REGRADE THIS AREA S
14+61.GRADE ROADWAY EDGES TO O AS �� ) ;� ►
EX.18"CMP CULVERT DRAIN INTO THE SURROUNDING FOREST 0 TO DIRECT THE DRAINAGE
S WHERE POSSIBLE. AWAY FROM THE DISTURBED )
O� SXO TYPICAL SECTIONS FOR THE ACCESS ROAD EROSION CONTROLSCALE: AREA.
_ 1"
O =4' EROSION CONTROL FOR THE DISTURBED AREAS ABOVE THE RESERVOIRS
BELFAIR WgTE DIS CT ROPER BOUNDARY \ SCALE:1"=50'
—� "
425'OF SILT FENCE,SEE
�X DETAILS ON SHEET 4 J J V
EPLACE CULVERTWTH A ?19 _ t ( SEDIMENTjG`ATCHMENT SIN
/ NEW 24"DIA.BY 60 FOOT ( OVERFLOW SPILLWAY.LOCATEIN
/ C VEDRRAINLTO FOREST. SEELON PROFILE
CMP CULVERT PIPE FIELD. !
PROFILE SHEET#3. \
OWNER) \-v
U ER SEDIM T CATCHMENT BASIN. -
`` SE"LSO DE T ON SHEET 3. \
NN�
�
� � \ ROCK LINED DITCH FROM CATCHH
�
�O \ •y yk JD \ BASIN TO THE UPPER WIMENT 2,S
CATCHMENT BASIN.
SbEE DETAILS ON
SHEET 3.
.J
NEB 4'HIGH BY 65'LONG \ _ x 0 �_` ( REPAIR EX.CATCH BASIN AND CLEA WT 2
B ICOINTAINMENT+� `\ ` EX.8"DIA.CULVERT.
WIDE QUARRIP`SFALL�0
lr� SEASONAL DRAINAGES � QP�[A VERFLOW SPILLWA .
(TYPICAL) \ T STA.8 ,SEE DETAIL > ROCK LINED DITCH WITH 8" \
p HEE #3 MAINT.ACCES ` F(ELD LOCATE PERFORATED PIPE UNDERDRIAN FROM \
O / EXISTING O AN V <J� \s EX.CATCH BASIN TO 5TA.14+61.SEE
'Z CONCRETE
DA T TO Q O DETAIL ON SHEET 3.
O
�J ^--�� O
\ REMAIN.
PROPOSED L�WER S IMENT
CATCHMENT BA61N-40 BY 12' ITH 2:1
SIDE SLOPES*E DETA, DNS ET3. � // \ � � +00 14+61.1� .
/ 2-EXIOTING 60,000 GALLON WATE /
cY N n/ STORAGE RESERVOIRS, r
\~ S PICANNAL IMAGES
�p 200�_, Q N
PROJECT EROSION CONTROL LAYOUT PLAN
�µa�vit SCALE: 1"= 100'
a of
Dmwni av Doh:
Pew ' Engineering Services Associates SO°`` saw BELFAIR WATER DISTRICT
M AS
•'qf pwmbd DV. ��� located on BaaueiAd Abod Cbnal Z
A.
,oA�r PM ArX Z10 ae► Ave abacA Abad .+t As saw PROJECT LAYOUT
APP^ewd BF BelAir, Va Sm.-&I9eo 275-7"9B� p� 4
MIN.
ARRY
2'-0"SETTLING DEPTH a `SPAUS - f71 2'HIGH X 18"DIA CMP OVERFLOW RISER
/ 1'-6"SEDIMENTSTORAGE ! CWATERQRE�1 -E-WIT`H-A-$AR --
GROUND UNE J
J LOCATE PRIOR TO CULVERT GRATE OVER THE RISER. EX.GRQ6161D
TEMPORARY SILT FENCE _ .. ..._ ..EXCAVATION.._ — — — — — — — — —
._. _.�
O COMPOST SOCK IE=51.7 — — —R —
ourFLow CHANNEL Is T.SED.BASIN=-05S.4---Z9-0 21
coNsrRucrED By EXCAVATION - - IE.=159.6.INSTALL A GALV.STEEL PLATE ON THE END OF
V 0*MIN PLACE GEOTEXTILE UNDER THE SPILLWAY AND SIDE 1'-U"DEPTH OVERFLOW _I CONTINUOUS LAYER BETWEEN THE GRAVELROCK AND THE NATIVE.PROVIDE A CMP T+Fik#`f3lA:ORFICE
NATIVE EARTHEN MATERIAL 'L4"OIA. 0 SPALLS�12RDEEP ,
1 I _..._c 41 ICOMPACTEDNSTRUCT NATIVE MATERIAL _.
2I 2 CONSTRUCTED BY EXCAVATION _
SEDIMENT TRAP BOTTOM) �1'_6�pEPTM OR EMBANKA6Nr .._________—__ -__. __.___.__ _'.' _..___... .__.____�__ ... r � _.___
OF 2"-4"ROCK '._'I�..,�.✓lJ
1'-0"DEPTH OF 3A'-1 112' -'
WASHED GRAVEL BACKFILL PROVIDE GEOTEXTILE SECTION B-B LOWER SEDIMENT CATCHMENT BASIN
SEE STD.SPEC.SECTION 633
SCALE:1•=20'
O4'TO 8"QUARRY SPALLS.
12"DEEP.PLACE 1 1/4"CLEAN CRUSHED ROCK AROUND AN 8"
TYPICAL DETAILS-UPPER SEDIMENT CATCHMENT BASIN PERFORATED DRAIN IN THE BOTTOM OFTHE DITCH.
NO SCALE ( ONNECT DRIAN TO EX.CATCH BASIN.
NEW ROADWAY SURFACE-3"OF
w 3"MINUS CRUSHED ROCK WITH 2'
v OF 1 1/4"CLEAN CRUSHED ROCK
a SURFACING. (TYPICAL-STA.5+50
cJi TO STA.14+61.)
EX.GROUND —
_BOTTOM OF SED.CATCHMENT BASIN=EL.178.0 TYPICAL SECTION eNORTH DRAINAGE DITCH
STA.12+40 TO 14+61
\\ SCALE:1"=4'
SECTION A-A-UPPER SEDIMENT CATCHMENT BASIN
SCALE:1"=10' �
4'WIDE BY 12"DEEP
QUARRY SPALL DITCH -6"
DEEP CHANNEL(TYPICAL) Lu
1
USE 4'-8"QUARRY ROCK. v
U
a� .6
a w�
'- TYPICAL SECTION NO H DRAINAGE DITCH
a ra
STA 10+50 TO 12+40
E ,� ■. ■ ■ 14.62
SCALE:1"=4'
e �
Rt N S ■ < < 19.09
Cr
co / CONC.ENVIRO.
-- - --
s w / BLOCKS.2'X2'X6'
2 HIGH
1'DEEP BY T WIDE
4 4 a D kIN FOUNUSE 3DATION NUS CRUSHED ROCK.
O+OD S.
1+ + 4+ + + 1 11+ + 1 '{`�:'
ACCESS ROADWAY PROFILE /
SCALE:1'=100'VERT. /
1"=100'HORIZ /
/ TYPICAL SECTION OF SLIDE BARRIER WALL
STA.7+60 TO STA.8+25
SCALE:1"=4'
e*ccuI
.*..., App—d sy: Drawn BW Dnia: sed.-
'4eA� PM 3-28-11 17S24
Engineering Services Associates AS BELFAIR WATER DISTRICT h—t 3
p 'B" 3-28-11 Located on aeatdi d flood Canal Hariz. ROAD ACCESS PROFILE
#ej,.o �. fit " 11 N.T 210 Cherokee geacA Road `'i' AS sww EROSION CONTROL O7 4
Approved B 61djhir, lra 98528 (360) 275-73" Boa Na.
y� DETAILS AND SECTIONS
MINIMUM EROSION AND SEDIMENTATION CONTROL REQUIREMENTS GENERAL EROSION AND SEDIMENTATION CONTROL NOTES MAINTENANCE STANDARDS
1. STABILIZATION AND SEDIMENT TRAPPING. ALL EXPOSED AND UNWORKED SOILS, INCLUDING SOIL THE FOLLOWING EROSION AND SEDIMENTATION CONTROL NOTES APPLY TO ALL 1. QUARRY SPALLS(OR HOG FUEL)SHALL BE ADDED IF THE PAD IS NO LONGER IN EXISTING ROAD
STOCKPILES, SHALL BE STABILIZED BY SUITABLE APPLICATION OF BMPS WHICH PROTECT SOIL FROM CONSTRUCTION SITE ACTIVITIES AT ALL TIMES, UNLESS OTHERWISE SPECIFIED ON THESE ACCORDANCE WITH THE SPECIFICATIONS.
THE EROSIVE FORCES OF RAINDROP IMPACT AND FLOWING WATER. APPLICABLE PRACTICES INCLUDE, PLANS: 2. IF THE ENTRANCE IS NOT PREVENTING SEDIMENT FROM BEING TRACKED ONTO PAVEMENT,
BUT ARE NOT LIMITED TO VEGETATIVE ESTABLISHMENT, MULCHING, PLASTIC COVERING, AND THE THEN ALTERNATIVE MEASURES TO KEEP THE STREETS FREE OF SEDIMENT SHALL BE
EARLY APPLICATION OF GRAVEL BASE ON AREAS TO BE PAVED. FROM OCTOBER I TO APRIL 30, 1. APPROVAL OF THIS EROSION AND SEDIMENTATION CONTROL PLAN DOES NOT CONSTITUTE USED. THIS MAY INCLUDE STREET SWEEPING, AN INCREASE IN THE DIMENSIONS OF THE 25'-0'R MIN.TYP.
NO SOILS SHALL REMAIN UNSTABILIZED FOR MORE THAN 2 DAYS. FROM MAY 1 TO SEPTEMBER 30, ANACCEPTANCE OF THE PERMANENT ROAD OR DRAINAGE DESIGN. ENTRANCE, OR THE INSTALLATION OF A WHEEL WASH. IF WASHING IS USED, IT SHALL
NO SOILS SHALL REMAIN UNSTABILIZED FOR MORE THAN 7 DAYS. BE DONE ON AN AREA COVERED WITH CRUSHED ROCK, AND WASH WATER SHALL DRAIN TO
2. THE OWNER AND HIS/HER CONTRACTOR SHALL BE RESPONSIBLE AT ALL TIMES FOR A SEDIMENT TRAP.
AT Al TIMES OF THE YEAR, THE CONTRACTOR SHALL RAVE SUFFICIENT MATERIALS, EQUIPMENT AND 3. ANY SEDIMENT THAT IS TRACKED ONTO PAVEMENT SHALL BE REMOVED IMMEDIATELY BY A•-e'QUARRY SPALLS
LABOR ON-SITE TO STABILIZE AND PREVENT EROSION FROM ALL DENUDED AREAS WITHIN 12-HOURS PREVENTING SILT-LADEN RUNOFF FROM DISCHARGING FROM THE PROJECT SITE. FAILURE SWEEPING. THE SEDIMENT COLLECTED BY SWEEPING SHALL BE REMOVED OR STABILIZED
AS SITE AND WEATHER CONDITIONS DICTATE. 13Y THE OWNER AND/OR CONTRACTOR CAN RESULT IN A FINE. THE DESIGNATED ON-SITE. THE PAVEMENT SHALL NOT BE CLEANED BY WASHING DOWN THE STREET,
TEMPORARY CONTACT PERSON NOTED ON THIS PUN MUST BE AVAILABLE FOR CONTACT BY EXCEPT WHEN SWEEPING IS INEFFECTIVE AND THERE IS A THREAT TO PUBLIC SAFETY. IF
FROM OCTOBER 1ST TO APRIL 30TH, THE PROJECT ENGINEER SHALL VISIT THE DEVELOPMENT SITE TELEPHONE ON A 24 HOUR BASIS THROUGHOUT CONSTRUCTION AND UNTIL THE PROJECT IT IS NECESSARY TO WASH THE STREETS, THE CONSTRUCTION OF A SMALL SUMP SHALL BE
A MINIMUM OF ONCE PER WEEK FOR THE PURPOSE OF INSPECTING THE EROSION AND HAS BEEN COMPLETED AND ACCEPTED BY THE PROJECT DIRECTOR. CONSIDERED. THE SEDIMENT WOULD THEN BE WASHED INTO THE SUMP.
SEDIMENTATION CONTROL FACILITIES, REVIEWING THE PROGRESS OF CONSTRUCTION, AND VERIFYING 4. ANY ROCK SPALLS THAT ARE LOOSENED FROM THE PAD AND END UP ON THE ROADWAY 1
THE EFFECTIVENESS OF THE EROSION CONTROL MEASURES BEING UNDERTAKEN. THE PROJECT 3. THE IMPLEMENTATION OF THESE ESC PLANS AND THE CONSTRUCTION, MAINTENANCE, SHALL BE REMOVED 5. IF VEHICLES ARE ENTERING OR EXITING THE SITE AT POINTS OTHER
REPLACEMENT AND UPGRADING OF THESE FACILITIES IS THE RESPONSIBILITY OF THE OWNER THAN THE CONSTRUCTION ENTRANCE(S), FENCING SHALL BE INSTALLED TO CONTROL AS REQUIRED-'100'MIN.,
ENGINEER SHALL IMMEDIATELY INFORM THE PROJECT DIRECTOR OF ANY PROBLEMS OR POTENTIAL AND/OR CONTRACTOR FROM THE BEGINNING OF CONSTRUCTION UNTIL ALL CONSTRUCTION IS TRAFFIC. EXCEPT MAY BE REDUCED
PROBLEMS OBSERVED DURING SAID SITE VISITS, AS WELL AS OF ANY RECOMMENDED CHANGES IN To 50'MIN FOR SITES WITH
THE EROSION CONTROL MEASURES TO BE UNDERTAKEN. WHEN REQUESTED BY THE PROJECT COMPLETED AND ACCEPTED BY THE PROJECT DIRECTOR AND THE SITE IS STABILIZED. LESS THAN ONE ACRE OF
DIRECTOR, THE PROJECT ENGINEER SHALL PROVIDE THE PROJECT DIRECTOR WITH WRITTEN RECORDS EXPOSED SOIL.
OF SAID WEEKLY SITE VISITS, INCLUDING DATES OF VISITS AND NOTED SITE OBSERVATIONS. 4. PRIOR TO BEGINNING ANY WORK HA THE PROJECT SITE, A E GENE STRUCTI T CONSTRUCTION ACCESS PLACE CONSTRUCTION AN A MINI TILE FOR
CONFERENCE MUST BE HELD, AND SHALL BE ATTENDED BY THE GENERAL CONTRACTOR, THE SOIL STABILIZATION AND A MINIMUM OF 0.15' 1'-0'MIN.
PROJECT ENGINEER, REPRESENTATIVES FROM AFFECTED UTILITIES, AND THE PROJECT DETAIL 4 CRUSHED ROCK UNDER THE SPALLS,FROM THE
2. DELINEATION OF CLEARING AND EASEMENT LIMITS. CLEARING LIMITS, SETBACKS, BUFFERS, AND DIRECTOR. RETURNS.FHE AS DIRECTED ROADWAY
TO THE RADIUS PROVIDE FULL WIDTH OF
SENSITIVE OR CRITICAL AREAS SUCH AS STEEP SLOPES, WETLANDS AND RIPARIAN CORRIDORS SHALL 2 PROVIDENGRESS FULLEGR ITHOF
S AREA
BE CLEARLY MARKED IN THE FIELD AND INSPECTED BY PROJECT ENGINEER PRIOR TO 5. THE EROSION AND SEDIMENTATION CONTROL FACILITIES SHOWN ON THIS PLAN ARE TO BE NTS 10'-O'MIN.
COMMENCEMENT OF LAND CLEARING ACTIVITIES. CONSIDERED ADEQUATE BASIC REQUIREMENTS FOR THE ANTICIPATED SITE CONDITIONS.
3. PROTECTION OF ADJACENT PROPERTIES. ADJACENT PROPERTIES SHALL BE PROTECTED FROM DURING CONSTRUCTION, DEVIATIONS FROM THIS PLAN MAY BE NECESSARY IN ORDER TO
SEDIMENT DEPOSITION BY APPROPRIATE USE OF VEGETATIVE BUFFER STRIPS, SEDIMENT BARRIERS MAINTAIN WATER QUALITY. MINOR DEPARTURES FROM THIS PLAN ARE PERMITTED SUBJECT
OR FILTERS, DIKES OR MULCHING, OR BY A COMBINATION OF THESE MEASURES AND OTHER TO THE APPROVAL OF THE COUNTY INSPECTOR. HOWEVER, EXCEPT FOR EMERGENCY Surface Drainage Structures
APPROPRIATE BMPS. SITUATIONS, ALL OTHER DEVIATIONS FROM THIS PLAN MUST BE DESIGNED BY THE PROJECT
ENGINEER AND APPROVED BY THE PROJECT DIRECTOR.
4. TIMING AND STABILIZATION OF SEDIMENT TRAPPING MEASURES. SEDIMENT PONDS AND TRAPS,
PERIMETER DIKES, SEDIMENT BARRIERS AND OTHER BMPS INTENDED TO TRAP SEDIMENT ON-SITE 6. ALL EROSION AND SEDIMENTATION CONTROL MEASURES SHALL BE INSPECTED BY THE
SHALL BE CONSTRUCTED AS A FIRST STEP IN GRADING. THESE BMPS SHALL BE FUNCTIONAL OWNER AND/OR CONTRACTOR ON A FREQUENT BASIS AND IMMEDIATELY AFTER EACH Water Bars (Whoa Boys) Drivable Dips
BEFORE LAND DISTURBING ACTIVITIES TAKE PUCE. EARTHEN STRUCTURES SUCH AS DAMS, DIKES, RAINFALL, AND MAINTAINED AS NECESSARY TO INSURE THEIR CONTINUED FUNCTIONING. ALL
AND DIVERSIONS SHALL BE STABILIZED ACCORDING TO THE TIMING INDICATED IN ITEM (1) ABOVE. SEDIMENT MUST BE REMOVED FROM SILT FENCES, STRAW BALES, SEDIMENT PONDS, ETC.
5. SLOPE STABILIZATION. CUT AND FILL SLOPES SHALL BE CONSTRUCTED IN A MANNER THAT WILL PRIOR TO THE SEDIMENT REACHING 8-INCHES IN DEPTH. I7. AT NO TIME SHALL CONCRETE, CONCRETE BYPRODUCTS, VEHICLE FLUIDS, PAINT, !!
MINIMIZE EROSION. ROUGHENED SOIL SURFACES ARE PREFERRED SMOOTH SURFACES. CHEMICALS, OR OTHER POLLUTING MATTER BE PERMITTED TO DISCHARGE TO THE `
INTERCEPTORS SHOULD BE CONSTRUCTED AT THE TOP LONG, STEEP
EP SLOPES WHICH HAVE r+ r+ ' 4 is
C
SIGNIFICANT AREAS ABOVE THAT CONTRIBUTE RUNOFF. CONCENTRATED RUNOFF SHOULD NOT BE TEMPORARY OR PERMANENT DRAINAGE SYSTEM, OR TO DISCHARGE FROM THE PROJECT SITE.
ALLOWED TO FLOW DOWN THE FACE OF A CUT OR FILL SLOPE UNLESS CONTAINED WITHIN AN r
ADEQUATE CHANNEL OR PIPE SLOPE DRAIN. WHEREVER A SLOPE FACE CROSSES A WATER
SEEPAGE PLANE, ADEQUATE DRAINAGE OR OTHER PROTECTION SHOULD BE PROVIDED. IN ADDITION, 2 A 10 111 soft ———
SLOPES SHOULD BE STABILIZED IN ACCORDANCE WITH ITEM (1) ABOVE. t
e 1i
6. CONTROLLING OFF-SITE EROSION. PROPERTIES AND WATERWAYS DOWNSTREAM FROM i
DEVELOPMENT SITES SHALL BE PROTECTED FROM EROSION DUE TO INCREASES IN THE VOLUME, POST-SEE STD.SPEC.g.01.3(g)A 2 in W skew � 3ir skew
VELOCITY, AND PEAK FLOW RATE OF STORMWATER RUNOFF FROM THE DEVELOPMENT SITE BY THE
IMPLEMENTATION OF APPROPRIATE BMPS TO MINIMIZE ADVERSE DOWNSTREAM IMPACTS.
7. STABILIZATION OF TEMPORARY CONVEYANCE CHANNELS AND OUTLETS. ALL TEMPORARY ON-SITE GFOTEXnLE
CONVEYANCE CHANNELS SHALL BE DESIGNED, CONSTRUCTED AND STABILIZED TO PREVENT EROSION
FROM THE EXPECTED FLOW VELOCITY FROM A 2-YEAR FREQUENCY, 24-HOUR DURATION STORM - T
FOR THE POST-DEVELOPMENT CONDITION. STABILIZATION ADEQUATE TO PREVENT EROSION OF COMPACTED p
OUTLETS, ADJACENT STREAM BANKS, SLOPES AND DOWNSTREAM REACHES SHALL BE PROVIDED AT NATIVE SOIL
THE OUTLETS OF ALL CONVEYANCE SYSTEMS. `Lev
�w
B. STORM DRAIN INLET PROTECTION. Al STORM DRAIN INLETS MADE OPERABLE DURING
CONSTRUCTION SHALL BE PROTECTED SO THAT STORMWATER RUNOFF SHALL NOT ENTER THE "
CONVEYANCE SYSTEM WITHOUT FIRST BEING FILTERED OR OTHERWISE TREATED TO REMOVE � SEENOTE3ROADWAY SURFACE STRUCTURES (DNR)
SEDIMENT. AFTER PROPER WRITTEN APPLICATION, THE REQUIREMENT FOR INLET PROTECTION MAY BURY GEoTEXnLElu
DETAILBE WANED BY THE DIRECTOR ON A SITE-SPECIFIC BASIS WHEN THE CONVEYANCE SYSTEM IN TRENCH
DOWNSTREAM OF THE INLET DISCHARGES TO AN APPROPRIATE SEDIMENT CONTAINMENT BMP AND
THE CONVEYANCE SYSTEM CAN BE ADEQUATELY CLEANED FOLLOWING SITE STABILIZATION. DURING EXCAVATION.MINIMIZE DISTURBING THE GROUND TYPICAL SPLICE NTS 4 2
AROUND TRENCH AS MUCH AS IS FEASIBLE AND SMOOTH -SEE DETAIL
9. UNDERGROUND UTILITY CONSTRUCTION. THE CONSTRUCTION OF UNDERGROUND UTILITY LINES SURFACE FOLLOWING EXCAVATION TO AVOID
SHALL BE LIMITED, WHERE FEASIBLE, TO NO MORE THAN 500 FEET OF OPEN TRENCH AT ANY ONE CONCENTRATING FLOWS.
TIME. WHERE CONSISTENT WITH SALTY AND SPACE CONSIDERATIONS, EXCAVATED MATERIAL SHALL O -
BE PLACED ON THE UPHILL SIDE OF THE TRENCH. DEWATERING DEVICES SHALL DISCHARGE TO AN A GEOTEXTILE FOR TEMPORARY SILT FENCE 3'-4 CARE SHOULD BE EXERCISED TO
APPROPRIATE SEDIMENT TRAP OR POND, PRECEDED BY ADEQUATE ENERGY DISSIPATION, PRIOR TO -SEE STANDARD SPECIFICATION SECTION PREVENT PUNCTURE OF THE
RUNOFF LEAVING THE SITE. *4%. "3a I+A TABLE UNDERLYING GEOMEMBRANE WHEN
10. CONSTRUCTED ACCESS ROUTES. WHEREVER CONSTRUCTION VEHICLE ACCESS ROUTES yG STAKING WATTLES
INTERSECT PAVED ROADS, PROVISIONS MUST BE MADE TO MINIMIZE THE TRANSPORT OF SEDIMENT 4-
(MUD) ONTO THE PAVED ROAD BY USE OF APPROPRIATE BMP'S SUCH AS A STABILIZED
CONSTRUCTION ENTRANCE. IF SEDIMENT IS TRANSPORTED ONTO A ROAD SURFACE, THE ROADS FAGt�
SHALL BE CLEANED THOROUGHLY, AS A MINIMUM, AT THE END OF EACH DAY. SEDIMENT SHALL BE �A{5 0,�„0-� PMT )
REMOVED FROM ROADS BY SHOVELING OR SWEEPING AND BE TRANSPORTED TO A CONTROLLEDQQ-
SEDIMENT DISPOSAL AREA, STREET WASHING SHALL BE ALLOWED ONLY AFTER SEDIMENT IS -
REMOVED IN THIS MANNER.
= 11. REMOVAL OF TEMPORARY BMPS. ALL TEMPORARY EROSION AND SEDIMENT CONTROL BMPS V STAPLE(TYPICAL)
SHALL BE REMOVED WITHIN 30 DAYS AFTER FINAL SITE STABILIZATION IS ACHIEVED OR AFTER THE (A PER POST)
TEMPORARY BMPS ARE NO LONGER NEEDED. TRAPPED SEDIMENT SHALL BE REMOVED OR sFF BUTET `I' 3' \I,
STABILIZED ON-SITE. DISTURBED SOIL AREAS RESULTING FROM REMOVAL OF TEMPORARY BMPS
SHALL BE PERMANENTLY STABILIZED. THE REMOVAL OF TEMPORARY EROSION AND SEDIMENT i
CONTROL BMPS MAY NOT BE REQUIRED FOR THOSE PROJECTS, SUCH AS SINGLE FAMILY PUTS, Maximize detention Of stormwater by placing fence as far away FABRIC(GEOTEX TILE)
THAT WILL BE FOLLOWED BY ADDITIONAL CONSTRUCTION UNDER A DIFFERENT PERMIT. IN THESE from4oe of slope as possible without encroaching on sensitive (TYPICAL) INSTALLATION REQUIRES THE
CIRCUMSTANCES, THE NEED FOR REMOVING OR RETAINING THE MEASURES WILL BE EVALUATED ON A areas or outside of the clearing boundaries. PLACEMENT AND STAKING OF WATTLES
SITE-SPECIFIC BASIS. STRAW WATTLES IN A DUG TRENCH 3'TO 6' DEEP
12. DEWATERING CONSTRUCTION SITES. DEWATERING DEVICES SHALL DISCHARGE INTO AN Install silt fencing along contours. ;
APPROPRIATE SEDIMENT TRAP OR POND, DESIGNED TO ACCEPT SUCH A DISCHARGE, PRECEDED BY InSta�'the ends of the silt fence to point slightly up-slope t0 pre- DETAIL z
ADEQUATE ENERGY DISSIPATION, PRIOR TO RUNOFF LEAVING THE SITE. Vent dement from asiltaround the ends Of the fence. SPLICED FENCE SECTIONS SHALL BE CLOSE ENOUGH TOGETHER TO PREVENT 4 2
flowing
SILT LADEN WATER FROM ESCAPING THROUGH THE FENCE AT THE OVERLAP. NTS
13. CONTROL OF POLLUTANTS OTHER THAN SEDIMENT ON CONSTRUCTION SITES. Al POLLUTANTS JOINING SECTIONS SHALL NOT BE PLACED IN LOW SPOTS OR IN SUMP LOCATIONS.
OTHER THAN SEDIMENT THAT OCCUR ON-SITE DURING CONSTRUCTION SHALL BE HANDLED AND Perform maintenance in accordance with Standard Specifications
LEGALLY DISPOSED OF IN A MANNER THAT DOES NOT CAUSE CONTAMINATION OF STORM OR 8.0143(9)A and 8.01.3(15).
SURFACE WATERS. POLLUTANTS OF CONCERN INCLUDE, BUT ARE NOT LIMITED TO, FUELS,
LUBRICANTS, SOLVENTS, CONCRETE BI-PRODUCTS AND CONSTRUCTION MATERIALS
14. MAINTENANCE. ALL TEMPORARY AND PERMANENT EROSION AND SEDIMENT CONTROL BMPS SILT FENCING
SHALL BE MAINTAINED AND REPAIRED AS NEEDED TO ASSURE CONTINUED PERFORMANCE OF THEIR
INTENDED FUNCTION. THE APPLICANT SHALL BE RESPONSIBLE FOR ASSURING THAT ANY SUCH DETAIL 1 FACILITIES DAMAGED DURING FLOODS, STORMS OR OTHER ADVERSE WEATHER CONDITIONS ARE
IMMEDIATELY RETURNED TO NORMAL OPERATING CONDITION. NTS 4 2
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I 9/16/1011 PM PM PM REVISED SILT FENCE DETAIL,ADDED STRAW WATTLE 8 TEMPORARY ACCESS ROAD DETAIL •� , Approved BIF Drown BIF Date.• CS24
Sco": BELFAIR WATER DISTRICT
I 1NI IS I PM PM PM ADDED SETBACK qNE EROSgN PROTEL'TION DETAIL q pM3-2&it Engineering Services Associates AS S� �t 4
Designed BK -
PM 3-28-11 located Oft BeauttjAl Hood Canal
G` c�,.oted BIF
N—r 210 Cherokee Beach Road Vert. AS saw EROSION CONTROL SPECIFICATIONS Q ¢
PM 3-28-11 Bn1jhir Ya 98528 (960) 295-73,9�f Job Aida AND DETAILS
tD/NAL bt Approved BFAb.Date By Ckd ppr.