HomeMy WebLinkAboutSR 167 84th Ave S to Grady Way Culvert Construction iduk
� Washington State
VI/ Department of Transportation % Memorandum
DATE: July 27, 1998
FROM: E.M. Hansen/E.R. Winter
PHONE: 440-4642/4540 SUBJECT: SR 167 MP 24.7 to 26.1
84`h Ave. S. to Grady Way
Culvert Construction
XL 2836
/i
To.
f ` CAYt �V i✓1
Matt MS 7329
The attached supplemental hydraulic report is submitted for your information. It reflects
the revised header and fish ladder design as negotiated in the HPA permitting process.
ERW a:\sr13\gl67025a.doc
cc Manny Quinteiro MS 143
Attachment
DOT 700-OO8X
Revised 6/92
SUPPLEMENTAL HYDRAULIC REPORT
STAGE IA
for
SR 167
84th Ave. South to Grady Way
Culvert Construction
MP 24.7 to 26.1
XL-2836 Pin No.1167128
BY
WASHINGTON STATE DEPARTMENT OF TRANSPORTATION
NORTHWEST REGION
Seattle, Washington
December 3, 1997
Project Engineer John Johnson, P.E.
Vicinity Map
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BEGIN PROJECT
SR 167
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SR 167
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+ 1 CULVERT TO BE PLUGGED
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"lIGI°" STAT FED.AID PROJ.NO. ENVIRONMENTAL AND ENGINEERING SR 167 V I
SERVICE CENTER 84TH AVE. TO S. GRADY WAY
DESIGNED BY M.OUINTE IRO 10 IWASH Washington State CULVERT CONSTRUCTION SHEE
Department of Transportation 2
ENTERED BY C. MCLE00 ,oe wAKR or
CHECKED BY R. SUAFOA VICINITY MAP 52
StiEE"`-
PROJ. ENGR. J. JOHNSON �oMrnAn No.
REGIONAL ADM. J. OKAMOTO REVISION BY
GATE DATE
Hydraulics Report
Table of Contents
a
Vicinity Map
1
Introduction
2
Existing Drainage
Soils 3
Existing Flood Plains 4
Existing Culverts 5
Existing Ditches 5
Existing Wetlands 5
Existing Bridges
6
Proposal
6
Design Frequency 6
Design References 6
Drainage Alternative
Alternative 8
Culverts 9
Ditches 10
Detention Pond 10
Water Quality Treatment 11
Utilities 11
Fish and Wildlife Requirement 11
Other Permits 12
Pipe Alternates 12
End of Text
Culvert Design Parameters
Appendix A
Wetlands Impact areas Appendix B
Channel Restoration
Appendix C
Soil Map Appendix D
Supplemental Hydraulic Report
Stage 1 A
SR 167, 84TH TO SOUTH
GRADY WAY-CULVERT CONSTRUCTION
XL-02836 P.I.
INTRODUCTION
This project proposes to plug some of the poorly functioning SR-167 culverts between SW
41st Street (near Nendels Hotel) and SW 23rd Street and replacing these culverts with a
new 72 inch diameter culvert, crossing at SW 23rd Street. The existing configuration would
be replaced with a total of three outlets across SR-167, between SR-405 and 43rd Street:
The new 72 inch diameter culvert crossing at SW 23rd Street, the southerly crossing in the
vicinity of SW 43rd Street, and the existing 3-foot by 4-foot box culvert outlet located near
SR-405 in the vicinity of Rolling Hills Creek.
The proposed improvement will provide better conveyance and relieve some of the floods
problems in East Valley Road and the Valley area.
A complete EIS Report was conducted by R. W. Beck, INC. for the City of Renton.
All the runoff volumes and cfs in this project are taken from that study.
The major items of work in this project are the construction of a 72 inch diameter culvert
crossing, installing two control structure and plugging up six existing culvert crossings.
This hydraulic report Type A proposes to modify and upgrade the existing drainage from
the Panther Creek Wetland Area by providing a new culvert crossings on SR 167. The
limits of this projects are from MP 24.7 to MP 26.1. State Route (SR ) 167 is classified as
a Type P-1 Highway (1984 Functional Classification) traversing generally level terrain in a
mixture of urban and rural King County.
1
EXISTING DRAINAGE
This project is located within the Black River Basin, known as the Panther Creek Wetland.
Panther Creek originates at Panther Lake in unincorporated King County and flows in a
northwesterly direction toward the City of Renton. Panther Creek enters the Valley area at
the base of Talbot Hills just west of Talbot Road. In this area, the creek flows through an
alluvial fan and the creek channel becomes braided. Low flows enter two culverts under
SR-167, which are the southernmost culverts between I-405 and SW 3rd Street. These
culverts discharge to a short drainage channel that connects to an approximately 3,000-foot-
long pipe system along the East Valley Road and SW 34th Street. This pipe system
discharges to Springbrook Creek.
EXISTING CONDITION:
The existing drainage in this project consist of moderate and high Panther Creek flows that
split where the channel becomes braided. Some of the flow enters the two culverts under
SR-167 and the other is directed north into the Panther Creek Wetland. Panther Creek flows
also exceed the capacity of the two southernmost SR-167 culverts during large storms
events, and excess flows travel north into the Panther Creek Wetland. Flows entering the
wetland are temporarily stored, then discharged to the west under SR-167 through a series
of existing cross culverts ranging from 12 to 48 inches in diameter as well as a 36-inch by
48-inch box culvert at the north end of the wetland near SR-405. The majority of these
culverts are severely plugged or only partially functioning, thus limiting their capacity. In
addition, these culverts are very difficult to access for maintenance crews, because the
culverts are 15 to 20 feet below the elevation of SR-167 and are separated from the road by
guard rail. However, the 36-inch by 48-inch box culvert at the north end of the wetland
near SR-405 is working properly. The maintenance of these culverts is the responsibility of
WSDOT.
The Panther Creek Wetland outflows from the SR-167 culvert crossing between
approximately SW 23rd Street and SW 34th Street enter a ditch system located along the
west side of SR-167. This system drains to a pipe system in the East Valley Road through
an open ditch at approximately SW 29th Street. The East Valley Road pipe system extends
north and discharges to an existing channel along SW 23rd Street that flows west to
Springbrook Creek.
2
The Valley area is subject to recurrent flooding problems. During the past 6 years there
have been four mayor floods (January 9,1990; November 24,1990; April 5, 1991; and
February 8-9, 1996) The streets have been under several feet of water. When flooding
conditions persist, Panther Creek flows that pass through the two southernmost SR-167 SR-
167 culverts can exceed the capacity of the 3,000-foot-long pipe system along East Valley
Road and SW 34th Street. These floods have caused damage to public and private property,
traffic congestion, and negative impact to businesses. In addition, the system also overflows
to the north to enter the ditch that runs along the west side of SR-167.
SOIL (US SOIL CONSERVATION SERVICE)
The Soil Conservation Service (SCS) soil in this project is classified as Puget Series.
The Puget series is made up of poorly drained soils that formed in alluvium, under sedges
and grass, in small depressions of the river valleys. They are classified as Type C soils
having slow infiltration rate when thoroughly wetted, and consisting chiefly of silt and soils
that have a slow rate of water transmission.
The ground cover is mostly wetland vegetation with brush, weeds and grasses in natural
conditions. The Runoff Curve Number (CN) 70 per the Highway Runoff Manual used in
modeling the Santa Barbara Urban Hydrograph Method (SBUH).
The Soil Map is shown on Apendix D
EXISTING FLOOD PLAINS:
The project lie within or adjacent to the existing 100 and 500 year a Green River flood
plain.
3
EXISTING STREAM CROSSINGS:
There are no stream crossing on this project.
EXISTING CULVERTS:
1. There are nine existing cross-culvert on this project. The station and conditions are as
follow:
L 1071+00 24 inches Diameter fully functional
L 1076+00 30 inches Diameter fully functional
L 1082+00 48 inches Diameter poorly functional
L 1084+00 36 inches Diameter poorly functional
L 1086+00 30 inches Diameter poorly functional
L 1092+00 48 inches Diameter poorly functional
L 1102+00 48 inches Diameter poorly functional
L 1107+00 30 inches Diameter poorly functional
EE 990+00 3' X 4' box culvert I fully functional
4
EXISTING DITCHES:
1. There are roadside ditches within the limits of this project.
a) They have been inspected and are functional.
EXISTING WETLANDS:
There are several types of wetlands within the limits of this project.
They are located along both sides of SR 167 known as the Panther Creek Wetland
4Area. For permanent wetland impact see Appendix B
EXISTING SUBSURFACE DRAINAGE/UNDERDRAINS:
1. There are no subsurface drainage problems that we are aware of.
EXISTING BRIDGES:
1. There are no bridges crossings within the project limits.
5
PROPOSAL
DESIGN �tEQiJENCY:
Design Storm Frequency (All storms shall have 24-hour duration except for 100-year
Ag
storm)
B. Conveyance - Rational Method
50 Year Storm for channels
25 Year Storm for Culverts
C. Rainfall Intensity:
ear storm 3.35 inches
25- '
2-year storm 1.90 inches y
10-year storm 2.95 inches 100-year storm 9.80 inches
50-year storm 3.50 inches
DESIGN REFERENCES:
WSDOT Design Manual
WSDOT Highway Hydraulic Manual
WSDOT Highway Runoff Manual
WSDOT Standard Plans and Specifications
King County, Washington Surface Water Design Manual
DRAINAGE ALTERNATIVES:
The solutions and alternatives considered for this project are detailedtil a 26.follow
1. . Plug six existing cross-culvert along SR 167 from MP 24.7
Install a temporary flow restrictor to the existing 30 inch culvert at Sta. 106 structure 00and to
install a new 72 inch diameter culvert at Sta 1120+75. Install a weir ro
allowed the City of Renton to control and manage the Panther Creek Wetland runoff thus
lessening the flooding problems in the Valley area.
2. Leave things as they are and do nothing.
6
ALTERNATIVE 1
This was selected because it falls within the BMPs mention in the WSDOT Highway Runoff
Manual. The installation of a box culvert and control structure is a cost effective solution to
improve the drainage conveyance under SR 167 while preventing flood damages in the
Valley area. Also a control weir will allowed the City of Renton to have flood management
and fish passage into Panther Creek in the near future.
Alternative 2 was not selected due to requirements from WSDOT and King County.
STREAMS:
1. There will be no stream crossing on this project.
FLOOD PLAIN:
1. This project is not located within a flood plain.
CHANNEL CHANGES:
1. This project will provide a full restoration and landscaping to the original channel on
the west side of SR 167 at Sta 1120+90(LT.) near SW 23rd Street where the box
culvert end.
2. This project will providing a control weir structure at the inlet end of the culvert to
restric the flows and attenuate velocity thus minimizing erosion to the streambanks and
the channel. Light loose riprap will also be used at the outlet end to further prevent
scouring.
3. The streambanks of the channel will be seeded with grass and shading vegetation to
prevent soil erosion and enhance the water quality for fish passage.
The channel restoration plans are shown on Apendix C.
CULVERTS:
1. There will be one new cross culvert install at Sta 1120+75.50 crossing d sat stations
will be a 72 inch diameter culvert connected to a Vault Control Structure locate
1120+64.12 (72.93'RT).
2. The methods of construction to install the culvert will required special shoring o rdams
cribbing. Sheet piling will be used if open cut is selected as the I prefer methods sedlected.
will be utilized as launching and receiving pits if trenchlessethods were
3. The following table describes the changes to be made to the existing cross culvert in
this project:
Table 1
�'utt�re use..
�uYverttatioriul�ert.d`unensians Gulvert.Condilinn be left o en
full functional wi
L 1071+00 ll P
24 inches Diameter y 10" flow restrictor
L 1076+00 30 inches Diameter fully functional will be plugged
L 1082+00 48 inches Diameter poorly functional P gg
poorly functional will be plugged
L 1084+00 36 inches Diameter P y will be plugged
L 1086+00 30 inches Diameter poorly functional P gg
poorly functional will be plugged
L 1092+00 48 inches Diameter P y will be lu ed
L 1102+00 48 inches Diameter poorly functional P gg
will be plugged
L 1107+00 30 inches Diameter poorly functional left open
EE 990+00 3' X 4' box culvert fully functio n al p
11,111111
g
CULVERT END SECTIONS:
1. Two beveled end sections will be provided at each end of the new box culverts at
Station 1120+90.03LT & 1210+64.12 RT.
DITCHES:
1. No ditches will be used for this project.
ENCLOSED DRAINAGE:
1. No enclosed drainage system will be used in this project.
STORM SEWER DESIGN:
1. A complete Culvert capacity analysis was done to check for conveyance and capacity of
the new cross culvert.
The 72" Diam. Culvert Design parameters are shown on Appendix A.
GUTTER DESIGN:
Concrete curb gutter will not be used in this project.
9
DETENTION PONDS:
There will no be any detention pond provided on this project.
WATER QUALITY:
The EIS prepare by R. W. Becks, Inc for the City of Renton states that the most recent in-
depth study of water quality in this area is the BRWQMP (R. W. Beck, 1993). And the
Washington State Department of Ecology, 1992 Statewide Water Quality Assessment
305(B). These reports list Springbrook Creek as having high levels of fecal coliform
bacteria, elevated temperatures and low levels of dissolved oxygen in the base flow.
In compliance with Section 303(D) of the Clean Water Act, Washington State, Department
of Ecology has listed Springbrook Creek as not meeting the state water quality standard for
the following:
• Fecal Coliform • Cadmium
Temperature • Copper
• Dissolve Oxygen • Mercury
• Sediment Bioassay • Zinc
Based on data from several years of routine water quality monitoring, Springbrook Creek is
consider one of the most polluted with the poorest water qualities in the Seattle-King
County metropolitan region.
This project will include a full landscaping restoration to the impacted areas arround the
channel. These areas will be seeded with grass and shading vegetation to provide water
quality enhancement and protect fish passage.
SUBSURFACE DRAINAGE:
1. Underdrain will not be installed in this project.
10
EXISTING UTILITIES:
1. Existing utilities that may interfere with proposed drainage are tabulated below by
name and location.
a) Olympic Pipe Line Company Sta 1121+20.0 Two 20 inch pressurized jet fuel line run
across SR 167 at approximately 30 feet north of the proposed box culvert location. Extreme
care shall be exercise around these lines.
b) Sta 1122+00 There is an overhead high voltage power line crossing SR 167 but it
posses no apparent treat to the site.
c) Sta 1122+10 A 60 inch water main crossing SR 167. It lie north of the culvert and
posses no treat to the site.
d) Fiber optic cables to be install in Stage 2 median. This would require contract overlap
coordination.
FISH AND WILDLIFE REQUIREMENTS:
1. A Fish and Wildlife Hydraulic Project Approval Permit will be require for this
project. The City of Renton is obtaining all Permit.
OTHER PERMITS:
Corp Permit
HPA
11
PIPE ALTERNATES:
1. PH and resistivity tests were performed for this project and resulted in the following
values:
PH = 6
Resistivity = 5,000 to 30,000 ohm-cm
This project is located in Corrosion Zone 2.
The information shown on the plans is based on using concrete pipe.
For Culvert Schedule Pipe (Standard Plan B-17). See General Notes for Acceptable
Alternative for Storm Sewer Pipe noteS No. 4 & 5 on STRUCTURE NOTES.
END OF TEXT
Report written by: Manuel J. Quinteiro
Checked by: Bob Winter
Design Squad Leader: Rumina Suafoa
12
72 " Diam. Culvert
Des ign Parameters
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Inlet Control Outlet Control
11w d� Cont. Outlet
Culvert T e Q Size D I1W k, (1, 2 h If LSD I 1IW I IW Vel. Comments
kovr\ 107 7 Zr 4. l 0•5 2-8 4.4 6,3 4,45 0•52 16,Z 6•Z 3. 8
Summary and Recommendations:
3
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Inlet Control Outlet Control
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Culvert'1' e Q Size D I IW ke d, 2 h„ 11 I'SI, I1W I IW Vel. Comments
pbQ K 7z I.2 S 7,5 . 5 4.� 7. 1 0,4 O 7 5
Summary and Recommendations: �,5 f- 7,
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_ NOTES:
tw 8
1. CONTRACTORS OPT�q 1D BOLT OR WF1D WH3t
* _ _ SUPPORT ANGLE 10�T PIE.
Z �4 26'-dt 7- ALL CONCtMM SHALL BE CLASS 4000 N/AR.
7X! 1C-St FABRICATED CORNER 3. DESIGN SHOWN ASSUMES RECEIVING PIT BASE SLAB
�p� PLACED EUNDERXCAVATE
HEADVIALLSUIT FOOBLE IW-SEA CONTRACTOR
VD r-- ` �i"r`-"/'] ON EL ION A SHALL EXCAVATE TO IILL T 9 W ITY
44 ON SECTION A AND COMPACT BI1G0•TLL TO 931G MAX DE?HSTT.
6' DIA CULVERT ` SEET PIE 4. BOLTS
OLT SHALL BE A327 GALV W/MASERS UIDER
I 1 I I 2'-C' '.L FENCE SHALL BE TYPE 6 AS SHOWN N THE WSDOT
I .1
STANDARD PUNS O L-2_ LOCATEFENCE
I WIXATFLY ADJACENT TO STRICTUR
ES.
404, IO _
1 A j i 4H • 0. CONCRETE REINFORCEMENT SHALL BE ASTM A706.
4 l � �L _ I _ - - �j - - I 7. SHEET PEE SHALL BE PZ22 OR E10tJAL
! !wA -I I b «
1 I . ' PLt 2
ZI I ` L4u3 WEIR
w j WEIR I vm 3 SUPPORT
I
44
I
L
w '
p -—-- - -- 15-6' FABRICATED
I
Hr4 ` CORNER t N 5 BOLTS O i•l
CONCRETE 12' SPACING
HrN HFJIDWALL I HOLES O 5'
bH 4'HIGH CHAIN I
UNC FENCE
HA
j SHEET PIE
WALL. TYP I WEIR 4 c
FISH UDDER PLAN
bq SCALE: 1/4'-1'-W 10'
B
w S CT10N
A SCALE. 1/2- - V-0• -
p -
d H�
CHAIN Lm
E1 16.D0 FENCE
APPROXIMATE BACK FILL LINE
H LO EXTERIOR OF SLEET PILE• d 14.00.CHANCE EL AT 5/6" GALV BOL
O I FABRICATED cuiw s EL 13.00 012
J
a EL 11.5
1 EL Ins
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1' DEPTH r1 gII s 6 GALV BOLT EL EXTRA o i
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FOOTMIG '�'; .tw CLR PLATE
RECEIVING PIT BASE SLAB - EL 5.5
RfXUND TOP OF WEIR
PLATE To 3 l6 RAD
5/� C.&V
BOLT o 12'
' EL -1.0t S'ACNc
/16
CLASS A GRAVEL BACICF'IL (SEE NOTE 1) WEIR SUP
WEIR SUPPORT
FOR FOUNDATIONS, SEE NOTE 3
1/Y WEIR
1 PLATE
SHEET PIE
3/15 SEE NOTE 1
SCALE-SECTION D
SHEET PILE
WALL EL-10.D SECTION C L��
SCALE- Ir
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w STA FED.AID PROJ.NO.
"s
84th AVE S TO S GRADY WAY
DESIGNED BY RML 10 A Washington State CULVERT CONSTRUCTION
5 ENTERED BY CAD Department of Transportatjon
S CHECKED BY MSC as~�98WO18 Tom FTJU qm AVt3m SL1TrE 2500 FlSH LADDER CONSTRUCTION. SHEET 1
PROJ. ENGR. J. Johnson _ CcmnuCTNa gEAnI.F-wA98154-10%
REGIONAL ADM. J. Okamoto
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NOTE:
FOR TRENCH BACKFILL DET41LS SEE SHEET RS1
SEE STRUCTURE NOTE FOR QUANTITY
%'?' TA E FED.AID PROJ.NO. ENVIRONMENTAL AND ENGINEERING
-6- Culvert Construction E—SIGNED BY M.QUINTEIRO I H SERVICE CENTER SR 167 DP1
ENTERED BY M.QUINTEIRO 84th Ave S to S Grady Way
A1111111111L Washington State
7/1/98 EDCEUL LE _,kL A� Department of Transportation SHEET
CHECKED BY R. SUAFOA 1 R U D C 7/1/98 ADJUSTED GRADE VERT� , -NGTH jas W MT FROJ.—ENGR. J. JOHNSON 98WO18 VAP11
REGIONAL ADM. J. OKAMOTO 7/1/98 COWMACT 010 ADDED-SHEET REF; NOTES IM0 . OF
1 1 CULVERT PROFILE 38
DATE I DATE I REVISION JBYJ SHEETS
Wetlands Impact
Areas
T o 23N o 9 R . H . W . M .
coul7 OF arRH'T0 l
WETLND 2500ASO.IFT. AREA EOVA
TION
STRADA DA VALLE OLYMPIC PIPE LINE a
PROPERTY PROPERTY
L 1121+23.91(191.1BLT) Y
m TEMP. CONST. EASENEN7I
N R/Y I i L 1121+91.72(167.57LT) a
0 ���� �a TEMP. CONST. EASEMENT o ci
orI �(� `i i Ij i CD
N
a -_. L 1120+67.28(202.
N N
�MPti CONST. EASEMENT�
y TEMP. CONST. EASEMENT r r�
IY1 r---__ ti--- ,I�' 1� Q1 M1
----_-_ — ' it + +
ul
En l / J W
_ n---- -----------F _ CONS 6(EASEMENT) --v P �_ i--r EAST VALLEY ROAD �W �s-M-��s-
---
o ----� Q, I ----_� WETLAND P-3 (W-48D)
n �, I ---
i L 1120+53.41(118.90LT) - --___ ' •I
cn TEMP. CONST. EASEMENT R/Y
NRN .I .11�, ALL. .lit. .w. .w. .W, ilL. ALL r. ALL l' .11t. ,1L. ,1L, al/.
_ . .o i o ,>.lt, ,W. .lit. ,lli.,lit. ALI,
i ALL, ,,u ut ut 114 A lu �- ut, � .• •�� I � Aw �, Aw ,114 ut ut .11t, .ue ALL,
�
lu _ —T --T- - -'---
ut w w w ut iu ut
ar+ -') ut lu 114 lu I'�` .ut, -'- ---------------------------
L ---- ---------------------------
II ____ _ —'— — g— L,_—,— --------
_ II P�' —'— _----------- —- -------- --- ---- -j----------------------------------------------112 5 -----
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N __________________ --_-___-____-NII _ __ ____-_-__Ir________
---- -� - -
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----------
-------- _____=________=====1 . _ - - - - - ----------- ------------------ -- oil
--------------- _____ - - - -------- o ---�-I -- - -----------
--- -- -------- - I -------- --
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t�
a 1-------- ———— - ----- u 11t .11t. .114 ut 11t,
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-- - ----- -- ------ Lw1
AIL. .lit. .11t. ,,,,, .114 .114 .,1,.
il1t, ALL ALL 11t,
.ut, Ott, .ut, w lu ltt .lu �1u ,ut Ali. ALL. au • ALL
•.ur I `I I
Aul
I o I
� I1VI � r"RE"[NF ON NC_7�Ch Ei2 PANTHER CREEK WETLAND
�R'�AS,I,NG::?IPE 72�`I a..
l l
1 I
TEMP. CONST. PERMIT I TEMP. CONST. PERMIT LEGEND
STA L 1199+80(121.21RT) STA L 1121,54.48(120.64RT)
EXST.OIL LINE . . ' . . WETLAND BOUNDARY
EXIST. FIBER OPTICS N TEMP. CONST. PERMIT ! i TEMP. CONST. PERMIT u4 .lu WETLAND AREA
S' EAST OF TRAVELED ROADWAY STA L 1199+80(141.18RT) I r A L 1121+ 4.48(140.6 ) -BP- -BP-- EXST.BURIED POWER
c- -c- EXST.GAS
FOR CONDUIT LOCATION AND I -BT——BT— - EXST.BURIED TEL. EXST.4'CONDUIT
DETAILS SEE SHEET RS1 _0P--0P- _ EXST.OVERHEAD POWER J EXST.LOOP DETECTOR
-07— —OT- - EXST.OVERHEAD TEL. _ EXST.EXST.JUNCTION
-r- -r- - EXST.WATER BOX TYPE I
FisK L DER -5--S-- EXST.SEWER o EXST.UTILITY POLE
SEEk SHEETS 01?3i:&;DPa -D- -D-- EXST.DRAINAGE - EXST.POLE ANCHOR
WETLAND IMPACT AREA EXST.MANHOLE
APPROX. 1400 SO. FT. _-9- EXST.DITCH c1 EXST.FM HYD.
-___-= EXST.CULVERT EXST.CATCH BASIN
o so 100 r NEW CULVERT 0 EXST.GRATE INLET
SCALE IN FEET
K0100 TAT FED.AID PROJ. ENVIRONMENTAL
NO. ENNMENTAL AND ENGINEERING
�o. SERVICE CENTER SR 167 D 1
DESIGNED BY M.OUINTEIR 10 WASH 84ttt Ave S to S Grady May
ENTERED BY M.SALEEM Washington State
CHECKED BY R. SUAFOA im umm u Department of Transportation CLdvert Construction SHEET10
PROJ. ENGR. J. JOHNSON 98W018 DRAINAGE PLAN 38
OF
REGIONAL ADM. J. OKAMOTO =-7/1/98 �'` I�: - WRTUCT 00. SHEETS
DATE DATE I REVISION BY
}
Ta23Na9 Ro5Eo W . M .
LEGEND
M ___ — — — — — — — — — — _
__ __ _ _ 1 - - _
N _— —
__1 _J= 111 ..-....
------------- ,f'_—L .— —�—=1=_=1 =1=_11i- —— —
__II
- _ ..... � EXST.OIL BOUNDARY
N -
/ o j(----------� '--'--'--'--'--'--'--'--'�_'—c -�--.---- � ................_...."w_.. ....-....._... -� � � .w. .uc WETLAND AREA
Q) 1080 II -
----------------44-----------------------------------u------ -- ------ -�- -�- - EXST.BURIED POWER
1 _ -
oll -- ----------------- ---- -- z - - -
---- GAS
--- --------------- A 11 SB SR 167 ---------I'r _
EXST.
- -er- -sr- - EXST.BURIED TEL
a ----------- ------------ 'll 1085 Ill 1090 „--------- - -- - ---- EXST.4•coNoulr
- ^' --------------------+�---------------- ---E-��1IE------ ------ ---- -- SB $R 167 -or- -OP- - EXST.OVERHEAD POWER J EXSBOX LOOP DETECTOR
---- --------------- - _ --------------- ..............
-or- -or- - EXST.OVERHEAD TEL
- --------oi------------------- - -----
------------- ---------------- --
------------- ------ ---- ' ------------- ;:N _ _ _ P I NB SR 167 it - - - --_-__ -- -
- - - ---- -•-- - -
11II"' nil ___ _________1L_______________
o - --_—_�- - -,1------------- II o r r NB SR 167 EXST.WATER
/ -S- -S- - EXST.SEWER
-------------llOLE
-------------��---- " ox PE
---- --------------- - --- -
-- EXST UTILITY P
_ - ___-- _ -o - EXST.DRAINAGE
v - - - - - - - - - - - -• jL - -�tl o+---- -- ---------- E EXST.POLE ANCHOR
` ` ` ` ` ` III - - - - - - - - - - - - ------ -------------
o - Y - - ` * --P' EXST.MANHOLE
-n----- - -�-- - EXST.DITCH
L - - - - 1�� w.i6 -��. - _ ------ q EXST.FIRE HYD.
IE t4.65` _ - - ------ EXST.CULVERT EXST.CATCH BASIN
- _
C.10 - - - - - - - - - ` - NEW CULVERT EXST.GRATE INLET
- - - - - - - -
® WORK AREA
c
/
m
mn
J
-7
ti
N
WETLAND IMPACT AREA I
APPROX. 140 SO. FT. WETLAND IMPACT AREA 2 3 4
WETLAND IMPACT AREA WETLAND IMPACT AREA
r7 APPROX. 140 SO. FT. APPROX. 140 SO. FT. APPROX. 140 SO. FT.
r-
0
2
PLUGGING EXISTING PIPE
SACK RIPRAP GRAVEL - - - - - - - - - - ` ` ` -
IT
_
.-- - 'n.. .I' - - - - - - - . _
- - _
. II'
— u
n
IF
---------
AIL-----------------------------
it
F.II II
S B SR 167 1105-----------------------------1L---------------r
I; -
------ -------------- II
---------------------------- oil
---SR II
----<ri-- --------------------------------IJB SR 167 511
<II rf
o,r __ -- -= ---_jr
------------
------
tWETLAND
- - - - - -
DIAMETER 30' TO 48' LL _ - - - - - - - - - - - ` ` ` - ` - - - - - -TYP. CROSS SECTION
NOTE: N.T.S.
PLACE GRAVEL IN CREVICES BETWEEN SACKS IN
/4' MAX. LAYERS.AND BETWEEN SACKS AND INSIDE PIPE WALL. IMPACT AREA WETLAND IMPACT AREA 6 0 50 loo
APPROX. 140 SO. FT. APPROX. 140 S0. FT. SCALE IN FEET
•[0[0" TATE FED.AID PR0J.N0. ENVIRONMENTAL AND ENGINEERING SR 167 D 2
DESIGNED BY M SERVICE CENTER.OUINTEIRO 10 WASH 84th Ave S to S Grady Way
ENTERED BY M.SaLEE Washington State
CHECKED BY R. SUAFOA Jo.ouMu VF Culvert Construction SHEET
PROJ. ENGR. J. JOHNSON 98WO18 Department of Transportation 10A
OF
REGIONAL ADM. J. OKAMOTO 7/1/96 ADDED NEV PLANSHEET`'r_•- MO CMTWT"0• CULVERT PLUGGING PLAN 38
DATE DATE REVISION BY 1-1—
Channel Restoration
Plans
c.�
I
LEGEND _ M
M
EXST.OIL LINE 7� LAYOUT REFERENCED CHANNEL LAYOUT TABLE
I
v j
-er--BP-- EXST.BURIED POWER o EXST.UTLITY POLE ---
II I '
c -er--er-- EXST.BURIRD TEL E EXST.POLE ANCHOR I I , � ----__--
+ _�--�-_ EXST.OVERHEAO POWER 11 EXST.MANHOIE I !i NO STATION• OFFSET(RT<) ELEVATION SLOPE**
C ct EXST.FIRE HYD. !i 16'0 L ' - 0
j ' ' 0 1 -11.65 12.19 RT 13.00 2:1
°' _0T--0t-- EXST.OVERHEAD TEL. -�O M- - 0 - '- A__ - 0
EXST.CATCH BASIN , -- --
-�--�-- EXST.WATER C3 EXST.GRATE INLET --- I i q , 2 0.0 4.00 RT 6.27 0
N -s--s-- EXST.SEWER
a WETLAND BOUNDARY j d i 0 3 108.30 4.0 RT 5.25 0
-D--0-- EXST.DRAINAGE .w. w< WETLAND AREA I - 0.
N
N -0--0- EXST.GAS -�- NEWEXS C DITCHULVERT =--{j -I -�- 0 0,O L Oij 10 0 • • • • • • • • 123.18
• • 4 12.20 RT 15.00 2:1
----- EXST.CULVERT 0 " • • 2
RIGHT-OF-WAY - I I� 3 • • 1 5 123.20 8.15 LT 15.00 2:1
} irmrmrn I II
ji 4 h ( --- • 6 117.90 8.20 LT 15.00 1:1
0 I li • 7 118.16 22.00 LT 14.15 2.5:1
CL II
in 41-------------- 8 108.30 4.00 LT 5.25 0
/----------}-,I
cn ---- -------
N -----Q�AL tgg� Z}TA-------I -µ--- •
L------------
il------------- • • 9 20.21 23.80 LT 11.00 2e1
�I • • I ' • IO 0.0 4.00 LT 6.27 0
ji S i� • - 11J1.G
6 it I I' ! 1 !' 1 ! �,1 j 1 • 1 11 -12.16
10.71 LT i 12.00 2:1
-j
7 '! !!; !_! !! _!-
N I I
N I 113
li W I
to
H
0
J
a 0 20 40
:> ...............................
-----------•......................ROADWAY--EXOAVATION-•---205...C:Y:
............. ........................................ ..........I................
.......-----•---•--•--------------------------------------•-------....................._........................----------•-................--.---......................------...........................-.....-----................-•--•-.......--
- ------------- -- ---------- - ----------------------------*------ -..--------............-• --------.....-----------••-------------------... . .. ..---- -----*.......Q ---------------
.....
.... <
--
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rn I` 0
.......................... ................... •...................................................................................... ay...............................................................................
................00.8................................................................................ .a................. ................................................................................_-
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..............
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-----------------•-- -. . .. .. w.,-,......................*..... z Q..+o.......... ....... .... ...........
ZN y..........................................y......... .........................................................
........................TO MATCH SiOPE.-... ..... ....... ...... ----...Z..�...
.. ..................... ..Q. ............................................................................... .n.A................
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............................. .......I..................._......... ........ ;.... C1JCV€RT .. .......
......................... j...............-•---........--••--...........--•--...................................... ................. M
E.XjST.IN-G..AS-�--IILAM_..C1I VER-T--- ............................................. .....----......-----..........-•----................................... ..........
--------------------------------- ---- 0:93..�.............. u,
--- ------ ------ -- ------ ---- ---- - --
................................................................................................................oa...........................................BO-T-IOM..............._........._....... '............._........ .......
................................................................................................................�. oy................_._......_........
................................................................................................................... J...............................................................................................................
0...... .........--•..............................................W .....STRE.AMB£-0..&RA-VEL•...I-'•--UEEP..40••TGN...---.... ---....-----...-.--.-----..-----...-----...--..-.-----•---•---------.-....J1,.0...VaA.....A.E..I.929...
Kelm TA FED.AID PROJ.NO. ENVIRONMENTAL AND ENGINEERING
SERVICE CENTER SR 167 D P 2
DESIGNED BY 10 WASH AgMkb., 84th AVe S to S Grady Way
ENTERED BY � Washington State
CHECKED BY Jm 0" A Department of Transportation (�Ivert COt18trUCt1011 1 A'
PROJ. ENGR. 98WO18 OF
REGIONAL ADM. 7/F/98.�' . ADDED NEIY°'per Ns#+ -No COMOTMffM• CHANNEL PROFILE 38
SHUTS
DATE I DATE I REVISION I BY
I
I
D NOTES: r---- ---
1. WESTERN RED CEDAR TO BE PLACED A MINIMUM
OF 20' FROM THE EXISTING GAURDRAIL AND 30' ............................•----------.......--------.............................................................. — 0 :_16' 0 L0 — —� — 0 — — 0 -- — 0
....................E-ASEMENT"AREA........................ ........... -0--- -
FROM EAST VALLEY ROAD. r--------I I
c SEE SECTION 8-02.3(6) OF THE 1998 STANDARD .................. •.•••••---•---------•••---•-•---................. ........... 1 0
- SPECIFICATIONS. 3—Q---- ----------------- -- "
................................................................................................................ ; 1 2 4 5
0) ........... 1 1
2. RED-OSIER DOGWOOD AND SITKA WILLOW TO BE ...•.............•"•""'•• NOTES #OYES--•-••• NOTES •••#OYES , O �• I 0 — 0 .
i PLANTED AT 3' O.C. 1..,-2:3.1'...........&.... Y:2;'3: tII.... ........... 1 20' 0 L !_ b 0 — 0 —
d ........... •..... =-
------ — --- I 1
a 3. WESTERN RED CEDAR TO BE PLANTED AT 25' O.C. ........................... .....•-----............................................- ............... ....... .. 1 i! '! 7
I
4. FOR GRADING IN THIS AREA, SEE SHEET DP2. 1-04...W-IflfiH---OF--•L-AWN I !; ry g I A
.............................. ............
___�.----• TU"BE--RESTORED'----
----- ------ ---------- 1
0 5. APPLY COMPOST WITHIN PLANTING AREA.
-----•............................•................................................
6. INSTALL WETLAND SEED MIX.
--------
7. INSTALL TWO TREE ROOT WADS WITH ATTACHED —————— -- —————— —1 r L W - -
-----QUAD� r 13TtC_------12" DIAMETER LOG. 10� LONG FOR AQUATIC HABITAT r= ....- - - - -
FEATURE. BURY IN TWO MAN ROCKS WITH ROOT WAD ; •-8'` EXLS.TLNIi..GRAUN! L--------- -�------------- -
........
a FACING UPSTREAM AT 45` ANGLE. SECURE WITH - _
r�i ECOLOGY BLOCK ON 5 PE AT...�-.. ................ ..................................... l
/8"' GALV. CABLE (1 EACH) 1-�—
OR ENGINEER APPROVED EQUAL.
in TT---- I
-' 8. AVAILABLE GRASS SEED MIXTURES FOR THE SOD SHALL $.EE..NQ.T.E............................i •••....•.M••••••.•.. .• I
-.. ................................SEE-ROTE-9--- I BE SUBMITTED TO THE ENGINEER FOR SELECTION AND APPROVAL. r L
SEE ATTACHED STANDARD SPECIFICATION SECTION 9-14.6(8) . ME9SM—UITAV — -----------------
.........................-.....................................................
i
....................I.O'..DEEP......---------......----- ! A 7 I 9
9. INSTALL TWO TREE ROOT WADS (TREE STUMPS) SEE.NO ....................... ••........... ( „� p
:......... --------
WITH 18-INCH DIAMETER FOR AQUADIC HABITAT FEATURE. ............................................ N
BURY INTO CHANNEL BANK WITH TWO MAN ROCKS. 0
N SECURE WITH ECOLOGY BLOCK WITH 5/8-INCH GALVANIZED ` -----
CABLE. (SEE STUMP AND ROOTWAD DETAIL THIS SHEET). 6
10. INSTALL SOD WITHIN THIS AREA. (SEE STANDARD SPECIFICATION
cli SECTION 9-14.6(8) . SECTION A- A
0 11. SEE SPECIAL PROVISION FOR "RESTORATION OF WEST SITE CHANNEL
-j LAUNCHING AND RECIEIVING PIT" WHEN THE CONTRACTOR
°' CONSTRUCTS THE CULVERT BY PIPE RAMMING.
0 20 40
LEGEND
® USED WETLAND SEED MIX BELLOW
ELEVATION 10.0 WITHIN CONSTRUCTED
CHANNEL 245 SO. YDS t ormal High Water Elv. 10.0
2-MAN ROCK
200-RED OSIER DOGWOOD
200 SITKA WILLOW LIVE STAKE
410 WESTERN RED CEDAR
/ V
REPLACE EXISTING LAWN WITH SOD _
(145 SO. YDS. +)
COLOGY BLOCK
DEADMAN
C 2 LOG HABITAT STRUCTURES X 12 INCH
DIAMETER TREE WITH R000 WAD. STUMP AND ROOTWAD DETAIL PLAN VIEW
NOT TO SCALE
2 TREE STUMP HABITAT STRUCTURE (18 INCH
DIAMETER STUMP.) NOTES:
STUMP MAY ALSO BE INSTALLED ON ITS
Q REFERENCED NOTE SIDE WITH ROOT WAD IN WATER.
KQt?w TATE FED.AI D PROJ.NO. ENVIRONMENTAL AND ENGINEERING
SERVICE CENTER SR 167 L 1
DESIGNED BY R. LAUGHLIN 10 1 WASH 84th Ave S to S Grady way
ENTERED BY M. OUINTEIRO Washington StateCHECKED BY SXEET
PROJ. ENGR. J.SUAFOA _JOHNSON 98YY018 amen Culvert Construction 13A
Department of Transportation
REGIONAL ADM. J.OKAMOTO 7/1/98 ADDED NEW PLANSHEET MO 1 —10 OF
PLANTING PLAN AND DETAILS 38
DATE I DATE REVISION 113Y SHEETS
SOIL MAP
Q
�\
i
��, $ ■ a n
�. Se I
• r
'•• :. •••..... • •. .••
• F d
I N \\ •
•
`` •• \\ 1 1 •II I r— i
Ll
Ul a
r
1 • •
Bpi -- L�)sta
jag
E . •• 11 all •--•---
as tg
M 16 ---- ` •• ,� a •L \
..___ ! 1 1. • • f •r. i •
Ii 1 • • o \
co". 515
I ♦
p y I •I I' ,.B e C of .��---
I
i I ry Ir I
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Cliil ii I 1 r w, ` 11 �` I`J'lil�•' I� L1/
I (
- - - 30 �:I„_ IBM 29
1203 AgC
• .
Shalcar soils in depressions. Some areas in the Representative profile of Pilchuck loamy fine
vicinity of section 9, T. 26 N., R. 7 E. are as much sand, in woodland, 650 feet north and 800 feet west
as 20 percent deep silty clay loams that have a very of the southeast corner of sec. ZS, T'. 21 IN., R. 5
dark brown surface layer and a reddish-yellow to E.:
olive-yellow subsoil.
Permeability is moderate. Roots penetrate easily C1--0 to 20 inches, very dark gray (10YR 3/1) loamy
the bedrock. Available water capacity is moder- fine sand, dark gray (2.5Y 4/1) dry; massive;
Runoff is slow to medium, and the erosion soft, very friable, nonsticky, nonplastic; -few
nazard is slight to moderate. roots; neutral; clear, smooth boundary. 15 to
This Ovall soil is used for timber and pasture. 23 inches thick.
Capability unit IVe-2; woodland group 3d1. CZ--ZO to 25 inches, dark grayish-brown (2.5Y :/-;
loamy fine sand, gray (10YR 5/1) dry; massive;
Ovall gravelly loam, 15 to 2S vercent slooes soft, very friable, nonstick%•, nonplastiz;
(OvD) .--This hillN soil is on uplands. .areas are roots; neutral; abrupt, way. boundan . - to ? .
irregular in shape and range from 40 to about 160 inches thick.
acres in size. C3--_5 to 30 inches, very dark gray and dark-,ray
Some mapped areas are up to 20 percent included (10YR 3/1 and 4/1) fine sand, dark gray (10`F
Alderwood gravelly sandy loam, and some are up to 10 4/1) dry; massive; soft, very friable, non-
percent Beausute gravely loam. sticky, nonplastic; few roots; neutral; abr,:t,
Runoff is medium:., and the erosion hazard is se- wavy boundary. 4 to 7 inches thick.
vere. C4--30 to 38 inches, dark-gray (10YR 4/1) loamy :ine
This soil is used for timber. Capabi14t,. unit sand, grayish brown (10YR 5iZ) dry; massi:e;
VT e-2; woodland group 3dl. soft, very friable, nonsticky, nonplastic; f=:.•
roots; slightly acid; abrupt, wavy boun.dar;•.
Ovall gravelly loam, 40 to 75 percent slooes 6 to 9 inches thick.
(OvF) .--This soil is very .steep and mostly convex. G--3S to 60 'inches, black (10YR 2/1) gravelly sar.-,.
The areas are irregular in shape and range from 50 very dark gray (10YR 3/1) dry; single grain;
to about 300 acres in size. This soil is similar to loose, nonsticky, nonplastic; few roots; r.eu-
Ovall gravelly loam, 0 to 15 percent sloes, exceLt tral . ?Ianv feet thick.
that depth to the underlying andesite averages 30 to
40 inches. 'Tie C horizon ranges from very dark gray to dart:
Some areas on the lower slopes are up to 15 per- gr and sh brown.. It is loamy fi^.e sand =o
. rnv-
zentincluded Alaensood g-__avell,• sand•, loan..; some fine sand is up to 15 percer.` gravel. � -e�:
are up to 15 percent Oval: soils that a': shores of layers are more than,• 15 percent gravel or cobbi:-
less than 40 nercent; and some are _ -o 10 _ -__en:: st _ .
Seausite gravely sandy loa:.:. Some mapped areas are up to 15 percent inclusions
Runoff is rapid to ver• rapid, and ti•.e erosion of Riverwash; some are up to 20 percent Pulchlicl,
-- .zard is severe. fine sandy loam; and some are up to 15 percent
This soil is used for briber. Capabilit% unit Briscot, Puyallup, and Oridia soils.
�'IIe-1; woodland group 3d1. Permeability is rapid. The effective rooting
depot is 60 inches or more. A seasonal high water
table is at a depth of 2 to 4 feet in places. Avail-
Pilchuck Series able water capacity is low, and runoff is slow.
Stream overflow is a severe hazard. The hazard of
The Pilchuck series is made up of excessively erosion and deposition by stream overflow is moderate
drained soils that formed in alluvium,on low stream to severe.
terraces, under a cover of hardwoods and conifers. This soil is used for timber and pasture. Capa-
Slopes are 0 to 2 percent. The annual precipitation bility unit CIw-1; woodland group 2sl.
us 35 to 55 inches, and the mean annual air tempera-
ture is about 50° F. The frost-free season is 160 Pilchuck fine sandy loam (Pk) .--This nearly level
to 200 days. Elevation ranges from 20 to SOO feet. soil is adjacent to streams . It is in long, narrow
In a representative profile, lavers of ve:-,• dark areas that range from 4 to about 150 acres in size.
6-ray, dark grayish-brown, and dark-gray fine sand The surface layer is fine sandy loam or sandy• loam
and loamy fine sand extend to a depth of about 38 that is very dark grayish brown to ven dark gray
inches. Below this is. black gravelly sand that ex- and 8 to 14 inches thick.
-ends to a depth of 60 inches or more. This soil is used for timber and pasture. Capa-
Pilchuck soils are used :or pasture and, to a bilit�• unit I`:w-1; woodland group 2sl.
:united extent, for. timber.
Pilchuck loamy fine sand (Pc) .--This nearly level Puget Series
soil is on terraces adjacent to streams . In e areas
are long and narrow and range from 2 to slu,ghz1% The Puget series is made up of poorly drained.
::ore than 60 acres in size. Slopes are less t::an 2 soils that formed in alluvium, under sedges and grass,
percent. in small depressions of the river •galleys. Slope_
are 0 to I percent. The annual precipitation is 35 mottles; strong;, ver;: coarse, prismatic strue-
to 55 inches, and the mean annual air temperature is ture; hard, firm, sti6.v, plastic; few roots;
about 50" F. The frost-free season is about 190 medium acid; clear, smooth boundary. 8 to
days. Elevations range from 10 to 650 feet. 10 inches thick.
In a representative profile, the soil is domi- Clg--40 to 45 inches, greenish-gray (5GY 5/1) silty
nantly mottled dark grayish-brown and grayish-brown clay loam, light gray (5Y 7/1) dr:; common,
'.tv clay loam to a depth of about 45 inches. The fine, prominent, strong-brown (7.51'R 5/6)
,stratum is gray silty clay that extends to a mottles; massive; hard, firm, sticky, plastic;
_;nth of 60 inches or more. medium acid; clear, smooth boundary*. 4 to 6
Puget soils are used for row crops and pasture• inches t..ick.
C_g--43 to 60 inches, gray (5Y 5/1) silt;: clay,
Puget silty clay loam (Pu) .--Puget soils are in light gray (SY 7/1) dr:; few, medium, promi-
nearly round or elongated tracts that range from 3 nent, ye1_1o::ish-red (S'iR 4/8, 5/8) mottles,
to 110 acres in size. Slopes are less than 1 per- ,• jlowish brown (lOYR 51`8) dry; and common,
cent. medium, distinct, light olive-brown (-'.SY S/4)
Representative profile of Puget silty clay loam, mottles, light yellowish brown (2.3Y 6/4) dr:;
in pasture, 800 feet east of the west quarter corner massive; •:er•.• hard, fir,, sticky, plastic;
of sec. 21, T. 25 `., R. 7 E.: medi= acid.
all--O to 1 inch, very dark grayish-brown (2.-E 3/2) Tao A horizon ranges from, silty char lop, to s'_1:
silt loam, grayish brown (10YR 5/2) dr:; mod- loam. The B hcrizon is dominantly silty clay loam
erate, thin, platy structure; hard, firm, stratified with silt loam, silty clay, and fine
slightly sticky, slightly plastic, many roots; sand.
medium acid,- abrupt, smooth boundary. 1 to 2 Some areas ma_ped are up to 10 percent inclusions
inches thick. or Woodinville and Snohomish soils.
Al2--1 to 7 inches, dark grayish-brown (2.SY 4/2) Permeability is slow. The seasonal high water
silty clay loam, light gray (SY 7/2) dry; table is at or -ear the surface. In drained areas,
common, fine, prominent, dark-brown (7.SYR roots penetrate with difficultv to a depth of 60
4/4) mottles; moderate, very coarse, prismatic inches or more. In undrained areas the effective
structure; hard, firm, sticky, plastic; man;: rcoting depth _S restricted. The available water
roots; medium acid; clear, smooth boundar% . c^pacify is hi-h. Runoff is slow to perded, and t`e
5 to 7 inches thick. erosion hazard slight. Steam overflow is a se-
vere to 17 inches, dark grayish-brown (2.5Y 4/_) were hazard.
silty clay loam, light gray (2.SY 7/_) dry; This soil is used for row crops and pasture.
common, medium, prominent, strong-brown (7.SYR Capability unit IITw-2; woodland group 3w2.
5/6, 5/8) mottles; moderate, medium, prismatic
structure; hard, firm, sticky, plastic; man%
roots; slightly acid; clear, smooth boundary. Puvalluo Series
5 to 12 inches thick.
_g--1' to 25 inches, grayish-brown (_.SY 5/_) The Puyallup series is made up of ..ell-drained
silty clay loam, light olive gray (SY 6/_1 dr:; soils that formed in alluvium.- under grass, hard-
many, medium, prominent, yellowish-red (S'iR woods, and ccnifers. These _oils are on the natural
5/8, 4/8) mottles; strong, very coarse, pris- levees adiacent to streams in the river valleys.
matic structure; very hard, firm, sticky, Slopes are 0 to 2 percent. The annual precipitation
plastic; common roots; slightly acid; abrupt, is 35 to 60 inches, and the mean annual air temper-
smooth boundary. 6 to 12 inches thick. ature is about 50° F. The frost-free season ranges
B23g--25 to 26 1/2 inches, dark-gray (5Y 4/1) medium from 160 to 200 days. Elevation ranges from 20 to
sand, light grayish brown (2.5Y 6/2) dry; few, 500 feet.
medium, prominent, yellowish-red (SYR. 5/S) In a representative profile, very dark grayish-
.mottles; single grain; loose, nonsticky, non- brown and dark grayish-brown, fine sandy loam and
plastic; few roots; slightly acid; abrupt, very fine sandy loam extend to a depth of about 34
smooth boundary. 1 to 2 inches thick. inches. The substratum, at a depth of 60 inches or
B24g--_6 1/2 to 31 inches, grayish-brcwn (2.5Y S/_) more, is ve:ti• dark grayish-brown, dark grayish-
silty clay loam, light gray (SY 7/2) dry; many, b_own, and dark-brown medium sand, loamy sand, and
medium, prominent, yellowish-brown (10YR 3/6) sand.
mottles; moderate, medium, angular block. Puyallup soils are used costly for row crops and
structure; hard, firm, sticky, plastic; few pasture. T-eN.• are among the scils that are well
roots; medium acid; abrupt, wat, boundar:. 3 suited to farming. Urban development is occurring
to 6 inches thick. in manv areas .
825g--31 to 40 inches, grayish-brown (_.SY S/_)
silt;: clav loam, light gray (SY 7/1) d^ here- p •al' _ sand: lop.^.. gyp;:) .--This pearl: level
mop fine, prominent yellow, brownish-yellcw
> so:1 is on pat::ra'_ levees in fire :alley bottoms . z
(10YR 7/6, 6/6), and strong-brown (7.SYR 5;'S) .areas are long and narrow or s::mewhat rounded and
24
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