2-NW-C1222 WHT Fish Passage and Habitat Restoration-Drwgs.pdf

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Attached to
State Parks Project – Willapa Hills Trail Fish Passage and Habitat Restoration at Willapa Hills State Park
Solicitation number
NW-C1222
Issued by
Mason County, Washington

About this file

Summary

This is a set of construction drawings and specifications for the Willapa Hills State Park Trail Fish Passage and Habitat Restoration Project, prepared by the Washington State Parks and Recreation Commission in partnership with the Washington Department of Fish and Wildlife. The project addresses a fish passage barrier on an unnamed tributary to the Willapa River located in Lebam, Washington (Pacific County, Section 33, T.13N., R.7W.). The scope of work includes removal of two existing undersized 36-inch concrete culverts, excavation and stream channel restoration, installation of pre-cast abutments, construction of a 100-foot-long by 10-foot-wide pedestrian bridge, trail approach grading, and site stabilization with native vegetation plantings. The project encompasses approximately 730 linear feet of construction limits with detailed specifications for erosion control, dewatering procedures, temporary fish screening, and environmental protection measures. Survey data indicates three control points with elevations ranging from 95.90 to 102.38 feet, and the streambed profile shows a new roughened channel section at 10.27 percent grade and a standard channel section at 1.33 percent grade. The drawings were approved for construction on March 3, 2026, with design completion dated September 31, 2023.

The construction specifications require adherence to maximum horizontal tolerances of plus or minus 0.5 feet and vertical tolerances of plus or minus 0.1 feet. All necessary permits must be obtained by Washington State Parks, with copies maintained onsite by the contractor. The project requires coordination with the Washington Department of Fish and Wildlife for fish exclusion and removal prior to work initiation, installation of temporary fish screens, and maintenance of work isolation zones during construction. Site stabilization of all disturbed areas must occur within seven days of completion, followed by re-vegetation with native species including salmonberry, snowberry, Oregon grape, cedar, maple, and Douglas fir planted at specified densities ranging from 3 to 15 feet on center. Pre-construction meetings, construction staking, and coordination with the project engineer and construction inspector are mandatory, and the contractor is responsible for compliance with all permit terms, conditions, and environmental protection measures outlined in the project specifications.

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NORTH

PROJECT LOCATION

NORTH

VICINITY MAP

WILLAPA HILLS STATE PARK TRAIL

FISH PASSAGE AND HABITAT RESTORATION PROJECT

(ACTING) AREA MANAGER: KEVIN GOODRICH

CA

D#

: W

0-

-S

W -1

S

PE

C#

WASHINGTON STATE PARKS

& RECREATION COMMISSION

INDEX

DESCRIPTIONSHEET

COVER SHEET

WILLAPA HILLS STATE PARK TRAIL

ROBERTSON ROAD LEBAM, WA. 98577

PACIFIC COUNTY

SEC 33, T.13N., R.7W., W.M.

46°56'39" N & 123°356'41" W

EXISTING CONDITIONS PLAN

5 EROSION CONTROL NOTES & DETAILS

4 EROSION CONTROL & DEWATERING PLAN

3 GENERAL NOTES

ALI RAAD

HOLLY WILLIAMS, CHAIR

SCOTT MERRIMAN HOLLY WILLIAMS

ALFIE ALVARADO-RAMOS

DIANA DUPUIS, DIRECTOR

SOPHIA DANENBERG

6 DEWATERING NOTES & DETAILS

9 BRIDGE & TRAIL PLAN & PROFILE

8 STREAMBED PROFILE

7 STREAMBED ALIGNMENT

11 PLANTING NOTES & SCHEDULES

10 PROJECT NOTES & DETAILS

March 3, 2026

3/4/2026

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%%UAPPROVED FOR CONSTRUCTION

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CAPITAL PROGRAM MANAGER

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REGION MANAGER

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WESTPORT

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SHORES

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OCEAN

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OCEAN

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CATHLAMET

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KALAMA

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KELSO

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LONGVIEW

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WINLOCK

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DOTY

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OAKVILLE

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PE ELL

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ILWACO

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CITY

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RAYMOND

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ABERDEEN

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HOQUIAM

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MONTESANO

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ELMA

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SHELTON

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MOCLIPS

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ROCK

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CASTLE

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TOLEDO

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TENINO

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OLYMPIA

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LACEY

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ADNA

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CHEHALIS

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WILLAPA HILLS

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STATE PARK TRAIL

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PROJECT LOCATION

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SITE

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LEBAM

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LEBAM

PK #2-�

EXISTING WILLAPA HILLS STATE PARK TRAIL

IS ON THE OLD RAILROAD GRADE

44 LF EX. 36-INCH

CONCRETE CULVERT

@ 0.50%

US IE 83.98

OS IE 83.76

93/

9'1-

HUB #1

91,---------------

,---92--------

'--PK #1

S cale: 1 20'

�-61 LF EX. 2-36-INCH

CONCRETE CULVERT

@ 2.78%

US IE 83.10

OS IE 82.70 PROJECT CONTROL POINTS

SURVEY CONTROL POINTS TABLE

1 .

2.

3.

DescriQtion Easting Northing Elevation

HUB #1

PK #1

PK #2

ASSUMED

10000.000' 8000.000' 100.00' 9967.673' 7879.740' 95.90'

10149.306' 8078.056' 102.38'

SURVEY DISCLAIMER

THIS IS NOT A BOUNDARY SURVEY. ELEVATIONS SHOWN ARE

BASED ON AN ASSUMED DATUM. TOPOGRAPHIC INFORMATION WAS

GATHERED UNDER DIRECTION OF THE ENGINEER FOR THE SOLE

PURPOSE OF DESIGN AND CONSTRUCTION OF THIS PROJECT.

PROPERTY LINES, EASEMENTS, AND RIGHT OF WAY LOCATIONS

DISPLAYED ARE APPROXIMATE BASED ON INFORMATION OBTAINED

FROM RECORDED DOCUMENTS, FOR REFERENCE PURPOSES

ONLY. FIELD DATA COLLECTED 3-2022.

EXISTING CONDITIONS SHEET 2 OF 11

CAD NO. PARKC0DE-PR0JECTC0DE-YEAR-FILENAME

ACTION BY DATE

D..

D..

>-' z

U) z

U) z

DESIGNED KLK 09/31 /23

DRAWN TG 09/31/23

CHECKED (FIELD) XXX XX/XX/XX

CHECKED (HDQTS.) XXX XX/XX/XX

I -;, I I,, I VI 2,, 1-

PROJECT ENGINEER

WASHINGTON

STATE

PARKS

AND

RECREATION

COMMISSION

WILLAPA HILLS

STATE PARK TRAIL

FISH PASSAGE &

HABITAT

RESTORATION

PROJECT

EXISTING

CONDITIONS PLAN

SCALE

o"---1"

IF SHEET IS LESS THAN

22"x34" IT IS A REDUCED SET

PARKS FILE#

SURVEY NOTES

1. THIS SURVEY WAS PERFORMED ON MARCH 2022 IN SUPPORT OF THE CULVERT REMOVAL AND BRIDGE

INSTALLATION IS INTENDED TO BE USED FOR THIS PURPOSE.

2. THIS IS NOT A PROPERTY BOUNDARY SURVEY, PROPERTY AND RIGHT-OF-WAY LINES HAVE NOT BEEN DETERMINED.

3. UNDERGROUND UTILITIES WERE NOT EXAMINED OR CONSIDERED AS A PART OF THIS SURVEY.

4. CONTOUR INTERVAL IS 1-FOOT.

UTILITY NOTIFICATION NOTES

"BEFORE YOU DIG CALL THE ONE CALL UTILITY NOTIFICATION CENTER 811 OR 1-800-424-5555

OR VISIT WWW.CALLBEFOREYOUDIG.ORG A MINIMUM OF TWO BUSINESS DAYS PRIOR TO CONSTRUCTION. IT'S THE LAW."

"WDFW MAKES NO REPRESENTATION AS TO THE EXISTENCE OR NONEXISTENCE OF ANY UTILITY, PUBLIC AND/OR PRIVATE, BURIED OR OVERHEAD, EXCEPT AS SHOWN ON THE DRAWINGS. WHERE UTILITIES ARE SHOWN ON THE DRAWINGS, THE

LOCATION, DEPTH AND/OR HEIGHT ARE APPROXIMATE. THE EXACT LOCATION, DEPTH AND/OR HEIGHT MUST BE

DETERMINED BY THE UTILITY COMPANY AND/OR THE LAND OWNER PRIOR TO ANY CONSTRUCTION WITHIN THE PROJECT

VICINITY."

CONSTRUCTION SEQUENCE NOTES

1. CALL FOR A PRE-CONSTRUCTION MEETING WITH THE PROJECT SPONSOR, CONSTRUCTION INSPECTOR AND ENGINEER.

2. CONSTRUCTION STAKING WILL BE PERFORMED BY INSPECTOR AND ENGINEER.

3. INSTALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES.

4. CONSTRUCT WORK ISOLATION ZONE PRIOR TO ANY WORK NEAR OR BELOW OHWM, COORDINATE

WITH WDFW TO PERFORM FISH EXCLUSION/REMOVAL.

5. REMOVE AND DISPOSE OF TWO EXISTING CONCRETE CULVERT PIPES, EXCAVATE AND CONSTRUCT NEW STREAM CROSSING, STREAM, AND ROUGHENED CHANNEL.

6. CONSTRUCT NEW PRE-CAST ABUTMENTS AND PEDESTRIAN BRIDGE.

7. STABILIZE ALL DISTURBED AREAS WITHIN 7 DAYS OF COMPLETION. RE-VEGETATE AND REMOVE WASTE MATERIALS

FROM SITE AS APPROVED BY THE SPONSOR AND LANDOWNER.

GENERAL CONSTRUCTION NOTES

1. ALL PERMITS NECESSARY TO CONSTRUCT THE PROJECT WILL BE OBTAINED BY WASHINGTON STATE PARKS.

COPIES OF THE PERMITS SHALL BE MAINTAINED ONSITE BY THE CONTRACTOR AND MADE AVAILABLE WHEN/IF REQUESTED.

THE CONTRACTOR SHALL BE RESPONSIBLE FOR COMPLYING WITH ALL PERMIT TERMS AND CONDITIONS.

2. THE CONSTRUCTION AND MATERIAL SPECIFICATIONS ARE PART OF THIS PLAN AND SHALL GOVERN THE

INSTALLATION OF THIS PROJECT.

3. THIS PROJECT SHALL BE CONSTRUCTED TO THE LINES AND GRADES SHOWN ON THE DRAWINGS AND DESCRIBED IN THE

CONSTRUCTION SPECIFICATIONS.

4. MAXIMUM TOLERANCES

a. HORIZONTAL

b. VERTICAL

SHALL BE AS FOLLOWS:

+/- 0.5 FT

+/- 0.1 FT

5. FAILURE TO MEET THE ABOVE TOLERANCES MAY RESULT IN THE REMOVAL AND REPLACEMENT OF PORTIONS OF THE

PROJECT AT NO ADDITIONAL COST.

6. ADJUSTMENTS TO LOCATIONS/TOLERANCES MUST BE APPROVED BY ENGINEER.

7.

8.

MAINTAIN A MINIMUM OF 5 FEET OF CLEARANCE FROM TREES MARKED FOR PRESERVATION.

TREE PRUNING MAY BE NECESSARY ON THE TREES MARKED FOR PRESERVATION. MEANS, METHODS, AND EXTENT WILL

BE DISCUSSED WITH THE CONTRACTOR AT THE PRE-CONSTRUCTION MEETING.

1.

2.

3.

4.

5.

6.

7.

8.

LINE LEGEND:

EXISTING MAJOR CONTOUR

EXISTING MINOR CONTOUR

PROPOSED MAJOR CONTOUR

PROPOSED MINOR CONTOUR

EDGE OF WATER

MHHW

OHW

ALIGNMENT

CROSS SECTION

BRUSH

PROPOSED ROAD FEATURE

TRAFFIC BARRIER

SILT FENCE

CONSTRUCTION LIMITS

EXISTING GRADE

PROPOSED GRADE

HIGH VISIBILITY FENCE

HATCH LEGEND:

EXISTING GRAVEL SURFACING

PROPOSED GRAVEL SURFACING

SLOPE PLANTING AREA

EXISTING WATER SURFACE

CONSTRUCTION NOTES

IDENTIFY ANY STRUCTURES OR MATERIALS WITHIN THE PROJECT AREA SLATED

FOR RELOCATION OR REMOVAL PRIOR TO PROJECT IMPLEMENTATION (E.G.

EXISTING BOULDERS/RIP RAP) AND CONDUCT OR ARRANGE FOR THEIR

REMOVAL OR RELOCATION. DISPOSE OF THE DEBRIS GENERATED FROM

REMOVAL AT AN APPROPRIATE LOCATION, AS AGREED UPON WITH PROJECT

SPONSORS.

EQUIPMENT USED ON THIS PROJECT MUST BE IN EXCELLENT WORKING

CONDITION, WELL MAINTAINED AND COMPLETELY FREE OF FLUID LEAKS

OF ANY KIND.

CONTACT WDFW TO SCHEDULE FISH REMOVAL. MAINTAIN SMALL NETS TO

CONTINUE FISH REMOVAL DURING CONSTRUCTION AS FISH ARE OBSERVED.

AFTER INITIAL FISH REMOVAL, THE WORK AREA IS TO BE ISOLATED FROM

FRESHWATER UNTIL TARGET GRADES REACHED. ANY FISH MISSED DURING

THE INITIAL REMOVAL ARE TO ALSO BE SAFELY REMOVED AND RELOCATED BY

WDFW OR THE CONTRACTOR. CONTINUE FISH REMOVAL EFFORTS,

WITH FURTHER,INCREMENTAL DEWATERING AS NECESSARY, UNTIL ALL FISH ARE

PERCEIVED TO HAVE BEEN CAPTURED AND MOVED.

ANY DAMAGE TO THE PROPERTY OUTSIDE OF THE SCOPE OF THESE PLANS

SHALL BE THE RESPONSIBILITY OF THE CONTRACTOR TO REPLACE / REPAIR.

PLACE ALL STRUCTURAL (NOT STREAMBED) FILL MATERIALS IN LIFTS NOT TO

EXCEED 8-INCHES AND COMPACT.

ALL EROSION CONTROL DEVICES MADE OF NON-BIO-DEGRADABLE MATERIALS

TO BE REMOVED UPON DEMOBILIZATION.

TEMPORARY SPOIL PILE LOCATIONS TO BE FLAGGED ONSITE BY ENGINEER PRIOR

TART F WORK.

ABBREV/A TIO NS

AISC - AMERICAN INSTITUTE OF

STEEL CONTRUCTION

ALUM - ALUMINUM

APPROX.- APPROXIMATELY

BM - BENCH MARK

CL - CENTERLINE

CLR. - CLEARANCE

CONC - CONCRETE

CP - CONTROL POINT

r/J - DIAMETER

DBH - DIAMETER AT BREAST HEIGHT

E. - EAST

EX. - EXISTING

ELEV. - ELEVATION

F.B. FLAT BAR

F.C. - FISH CONDUIT

FG - FINISH GRADE

FT - FOOT

FTG - FOOTING

F.W. - FISHWAY

GALV - GALVANIZED

GA. - GAUGE

HORZ. - HORIZONTAL

HPA - HYDRAULIC PROJECT APPROVAL

HSS - STRUCTURAL TUBING

ID - INSIDE DIAMETER

IE - INVERT ELEVATION

LAT. - LATITUDE

LFW - LOWER FISHWAY

LF - LINEAL FEET

LG - LONG

LONG. LONGITUDE

LT - LEFT

MAX. - MAXIMUM

M.B. - MACHINE BOLT

MFG. MANUFACTURER'S

MIL. - MILLIMETER

MIN. - MINIMUM

MISC. - MISCELLANEOUS

N. - NORTH

NF - NATIONAL FOREST

NO. - NUMBER

NRCS - NATURAL RESOURCES

CONSERVATION SERVICE

N.T.S. - NOT TO SCALE

MOD. - MODEL

O.C. - ON CENTER

OD - OUTSIDE DIAMETER

OHW - ORDINARY HIGH WATER

OSB - ORIENTED STRAND BOARD

PAV'T - ASPHALT CONCRETE PAVEMENT

PE - PROFESSIONAL ENGINEER

PK - PARKER KALON NAIL

PL - PLATE

PT - PRESSURE TREATED

REQ'D - REQUIRED

RT - RIGHT

S. - SOUTH

SEC. - SECTION

S.F. - SQUARE FEET

SHT. - SHEET

SPEC'S. - PROJECT SPECIFICATIONS

S.S. - STAINLESS STEEL

TBM - TEMPORARY BENCH MARK

TYP - TYPICAL

UFW - UPPER FISHWAY

US - UNITED STATES

VERT. - VERTICAL

W. - WEST

WA. - WASHINGTON

WRIA - WATER RESOURCE INVENTORY AREA

WSDOT - WASHINGTON STATE DEPARTMENT

OF TRANSPORTATION

W.S. - WATER SURFACE

PROJECT DESCRIPTION:

REMOVE EXISTING CULVERTS, RIP RAP AND

APPURTENANCES. REPLACE WITH A BRIDGE. RESTORE

STREAMBED CHANNEL AS SHOWN ON THE PROPOSED

PLANS.

PROJECT PARTNERS:

WASHINGTON DEPARTMENT

OF FISH & WILDLIFE

WASHINGTON DEPARTMENT OF STATE PARKS

SHEET 3 OF 11

CAD NO. PARKCODE-PROJECTCODE-YEAR-FILENAME

ACTION BY DATE

U) z

U)

DESIGNED KLK 09/31 /23

DRAWN TG 09/31/23

CHECKED (FIELD) XXX XX/XX/XX

CHECKED (HOOTS.) XXX XX/XX/XX

PROJECT ENGINEER

WASHINGTON

STATE

PARKS

AND

RECREATION

COMMISSION

WILLAPA HILLS

STATE PARK TRAIL

FISH PASSAGE &

HABITAT

RESTORATION

PROJECT

GENERAL NOTES

SCALE

IF SHEET IS LESS THAN

44 LF EX. 36-INCH-------

CONCRETE CULVERT

@ 0.50%

US IE 83.98

OS IE 83.76

EXISTING STA 3+35.88 = -------

PROPOSED STA 10+83.69

MATCH EXISTING CULVERT

ELEVATION 83.76

PK #2-�

PROPOSED FISH SCREEN-

PROPOSED COFFER DAM -

PROPOSED BY-PASS PIPE--

PROPOSE O BY-PASS PIP E--------t'-----th���-�====-�•'--+---\-�� 1 30LF SI LT FENCE-----��====�7tl=:=:t�:::::�9;6�

����-��t�'s;:---��H

STAGING AREA ( ENGINEER ANO� /,., "? __ _____..

CONTRACTOR TO DEFINE EXACT

'( STAGING AREA. CONSTRUCTION

ENTRANCE OFF PAGE 430' TO

WEST).

I

EX I STING ST A 2 + 5 2. 1 2 = ____ __j__-1-'--.\-----�'.'....___-�L---t------.'!i"''rH�

PROPOSED STA 10+00.00

MATCH EXISTING ELEVATION 80.87

CONSTRUCTION LIMITS, 730' ---

HIGH VISIBILITY FENCE

PROPOSED FISH SCREEN

PROPOSED BY-PASS PIPE----

'------91

-=-------_:97 98

91---------'.--�

96_

HUB #1

91-

_92-------------

93 ______.,.

�- CONSTRUCTION LIMITS

'-----------P K # 1

Scale: 1" - 20'

ENTRANCE

I

�ALTERNATE STAGING AREA

-- ( ENGINEER ANO CONTRACTOR

CAD NO. PARKC0DE-PR0JECTC0DE-YEAR-FILENAME

ACTION

DESIGNED

DRAWN

CHECKED (FIELD)

CHECKED (HOOTS.)

BY DATE

0.

0.

z

Cf) z z

KLK 09/31 /23

TG 09/31/23

XXX XX/XX/XX

XXX XX/XX/XX

PROJECT ENGINEER

TO DEFINE EXACT STAGING t---------_.

AREA)

PROPOSED 100' LONG x 1 O' WIDE BRIDGE

(DESIGNED BY OTHERS)

WASHINGTON

STATE

PARKS

...__140LF SILT FENCE

AND

CONSTRUCTION LIMITS, 730' RECREATION

HIGH VISIBILITY FENCE

�-61 LF EX. 2-36-INCH

CONCRETE CULVERT

@ 2.78%

US IE 83.10

OS IE 82.70

TO BE REMOVED

ADDITIONAL DETAILS FOR EROSION CONTROL ARE

AVAILABLE IN THE 2019 STORMWATER MANAGEMENT

MANUAL FOR WESTERN WASHINGTON.

BMP C101:

BMP C103:

BMP C107:

BMP C150:

BMP C233:

PRESERVING NATURAL VEGETATION

HIGH VISIBILITY FENCE

CONSTRUCTION ROAD/PARKING AREA

STABILIZATION

MATERIALS ON HANO

SILT FENCE

COMMISSION

WILLAPA HILLS

STATE PARK TRAIL

FISH PASSAGE &

HABITAT

RESTORATION

PROJECT

EROSION CONTROL

& DEWATERING

PLAN

SCALE

o"---1"

EROSION CONTROL & DEWATERING PLAN SHEET 4 OF 11

IF SHEET IS LESS THAN

SILT FENCE NOTES:

1. FILTER FABRIC SHALL BE PURCHASED CONTINUOUS ROLL CUT TO

LENGTH AS NEEDED. IF JOINTS ARE NECESSARY FABRIC SHALL BE

SPLICED TOGETHER ONLY AT SUPPORT POSTS WITH A MINIMUM OF

(6) INCH OVERLAP. BOTH ENDS SHALL BE SECURED AS REQUIRED.

2. SILT FENCING SHALL BE INSTALLED TO FOLLOW CONTOURS. FENCE

POSTS SHALL BE SPACED A MAXIMUM OF EIGHT (8) FEET APART

UNLESS OTHERWISE SHOWN HEREIN. ALL POSTS SHALL BE DRIVEN

INTO THE GROUND A MINIMUM OF 30 INCHES.

3. A TRENCH SHALL BE EXCAVATED, ROUGHLY EIGHT (8) INCHES WIDE

BY EIGHT (8) INCHES DEEP UPSLOPE AND ADJACENT TO THE POST

TO ALLOW THE FILTER FABRIC TO BE BURIED.

4. WHEN STANDARD STRENGTH FILTER FABRIC IS UTILIZED, A WIRE SINGLE

SPACE MESH SUPPORT FENCE SHALL BE FASTENED TO THE UPSLOPE

SIDE OF THE POSTS (BETWEEN THE POST AND THE FILTER FABRIC

USING ONE (1) INCH MINIMUM LENGTH WIRE STAPLES, TIE WIRE OR

APPROVED HOG RINGS. ALL WIRE SUPPORT SHALL EXTEND INTO THE

TRENCH A MINIMUM OF FOUR (4) INCHES AND SHALL NOT EXTEND

MORE THAN 36 INCHES ABOVE ORIGINAL GRADE.

5. ALL FILTER FABRIC SHALL BE STAPLED OR WIRED TO SUPPORT FENCING

AND A MINIMUM OF 20 INCHES OF FABRIC SHALL BE EXTENDED INTO

THE TRENCH. FILTER FABRIC SHALL NOT BE STAPLED OR FASTENED TO

EXISTING TREES OR STRUCTURES UNLESS OTHERWISE DIRECTED BY THE

ENGINEER.

6. IF HIGH STRENGTH FILTER FABRIC AND CLOSER POST SPACING (4 FOOT

ON CENTER OR LESS) ARE USED, THE WIRE SUPPORT FENCING MAY BE

ELIMINATED. HIGH STRENGTH FABRIC SHALL BE STAPLED OR WIRED

DIRECTLY TO POSTS AS REQUIRED BY THE ENGINEER.

7. TRENCH SHALL BE BACKFILLED WITH 3/4 INCH MINIMUM DIAMETER

WASHED GRAVEL OR OTHER SIMILAR SOURCE AS APPROVED BY THE

ENGINEER.

8. SILT FENCING SHALL BE INSTALLED WHERE SHOWN ON THE PLAN, OR

AS MARKED IN THE FIELD BY THE ENGINEER, PRIOR TO COMMENCEMENT

OF WORK. ALL FENCING SHALL BE INSPECTED DAILY DURING CONSTRUCTION

AND AFTER EACH SIGNIFICANT RAINFALL EVENT UNTIL SITE HAS BEEN

PERMANENTLY STABILIZED. ANY REQUIRED REPAIRS SHALL BE MADE

IMMEDIATELY.

9. REMOVAL OF TRAPPED SEDIMENT SHALL BE PERFORMED WHEN

AMOUNTS REACH APPROXIMATELY 1 /3 HEIGHT OF THE FENCE ABOVE

GROUND OR SOONER.

10. SILT FENCING SHALL REMAIN IN-PLACE UNTIL SITE HAS BEEN

RE-VEGETATED TO ORIGINAL CONDITION OR DIRECTED BY THE ENGINEER.

COIR WATTLE./FASCINES INSTALLATION NOTES (IF NEEDED):

1. DESIGN BANK SLOPE VARIES, SEE PLAN VIEW.

2. INSTALL EROSION CONTROL COIR WATTLES AT THE WATER EDGE

AT TOE OF SLOPE TO DEPTH OF � HEIGHT OF WATTLE.

3. TIE ENDS OF COIR WATTLES TOGETHER WITH COIR TWINE FOR A

CONTINUOUS LINEAR SYSTEM.

4. DRIVE WOODEN STAKES NEXT TO THE COIR WATTLE EXTENDING 8"

ABOVE GROUND. TIE COIR WATTLE TO THE STAKES EVERY 3 FEET.

5. TRENCH ENDS OF COIR LOGS INTO THE BANK A MINIMUM OF 3

FEET AND COVER WITH COMPACTED SOIL.

6. BACKFILL ON UPSLOPE SIDE OF COIR WATTLE WITH NATIVE SOIL

AND STABILIZE WITH SPECIFIED VEGETATION.

7. SUPPLEMENTAL PLANT PLUGS MAY ALSO BE INSERTED INTO THE

COIR WATTLE.

2"X 2" WOOD-�

POST OR STEEL

POST AT 8' O.C.

FILTER FABRIC

MATERIAL

II

FASTEN WITH STAPLES OR, 'II WIRE RINGS (TYP.) '\)

11 11

• iL 8"X8" TRENCH --- 1L-- -------

11 11

11 11

8' MAX.

2"X2" 1 4 GA. --�

WELDED WIRE FABRIC

OR EQUAL

I y������

- ��%'W'

-II - rol '°

II �

I

Li Li �--�

BURY BOTTOM OF FILTER

FABRIC MATERIAL IN 8"X8"

TRENCH BACKFILL AS

SPECIFIED.

TYPICAL SILT FENCE DETAIL

N.T.S.

2"X 2"X 14 GA.

WIRE FABRIC OR

EQUIVALENT

FILTER FABRIC-,

MATERIAL

2"X 2" WOOD ----

POST OR STEEL

POST AT 8' O.C.

I

MIN.

6"

TYPICAL SILT FENCE SECTION VIEW

N.T.S.

BACKFILL WITH NATIVE

SOIL AND SEED.

EROSION CONTROL

BLANKET OR COIR MAT

WATTLE/

FASCINES

COIR TWINE

WOODEN SUPPORT STAKE

WATER LEVEL

SECTION VIEW

N.T.S.

EROSION CONTROL NOTES & DETAILS SHEET 5 OF 11

CAD NO. PARKC0DE-PR0JECTC0DE-YEAR-FILENAME

ACTION BY DATE

en z en z

DESIGNED KLK 09/30/23

DRAWN TG 09/30/23

CHECKED (FIELD) XXX XX/XX/XX

CHECKED (HOOTS.) XXX XX/XX/XX

12-/rr/J--•1,,1, PROJECT ENGINEER

WASHINGTON

STATE

PARKS

AND

RECREATION

COMMISSION

WILLAPA HILLS

STATE PARK TRAIL

FISH PASSAGE &

HABITAT

RESTORATION

PROJECT

EROSION CONTROL

NOTES & DETAILS

SCALE

IF SHEET IS LESS THAN

NOTE:

EXTREME CARE SHALL BE TAKEN TO ENSURE

THAT NO PETROLEUM PRODUCTS, HYDRAULIC

FLUID, SEDIMENT LADEN WATER, CHEMICALS, OR

ANY OTHER DELETERIOUS MATERIALS ARE

ALLOWED TO ENTER THE STREAM. ALL

CONTAINERS AND EQUIPMENT SHALL BE

MAINTAINED FREE OF LEAKS AND STORED SUCH

THAT LEAKAGE CANNOT DRAIN OR LEACH INTO

THE STREAM. TEMPORARY FISH SCREEN.

INSTALL PER WDFW STANDARDS 1

I

(SEE NOTE THIS SHEET) SITE I

SCREEN AT POOL LOCATION TO I

PREVENT IMPINGEMENTS. I

I I I I

I I I I I I

EXISTING :

ROAD I

- - TOP BANK- - - - - -Top BANK-

Q) 71---

-TOE-.

FLOW� STREAM - CHANNEL -+-1---

--ToE-'..._ ._ . , �

PUMP

SET

UP

AREA

FISH SCREEN. MONITOR AND

CLEAR DEBRIS AS REQUIRED.

PEA GRAVEL SANDBAG

OR NATIVE STREAMBED

GRAVEL PLACED BY

HAND.

PLACE STRAW BALE BARRIER

ALONG LOW SIDE OF

INFILTRATION SITE.

I

EXISTING :

ROAD I

I

I

I I I I iT;J.J.---PUMP STANDING WATER FROM

CONSTRUCTION AREA TO UPLAND

INFILTRATION SITE. (SITE TO BE

STAKED IN FIELD BY ENGINEER

PRIOR TO CONSTRUCTION).

TYPICAL DEWATERING

SCALE: N.T.S.

PEA GRAVEL SANDBAG

DAM 2' -0" HIGH MIN.

6 MIL. POLYETHYLENE

PLASTIC SHEETING.

12" DEWATERING PIPE----._

TOE IN FRONT OF

PLASTIC INTO

STREAM BED 1 : 1

FLOW� MIN., 1'-0" DEEP.

d �

- - - �. -y-.::..... -

NOTE:

1. REMOVE ALL COMPONENTS AND RESTORE AREAS DISTURBED BY DE-WATERING FACILITY FOLLOWING CONSTRUCTION.

2. INSTALL SHORT STREAM DIVERSIONS AT INDIVIDUAL LOCATIONS WHERE THE PROPOSED STREAM ALIGNMENT MEETS THE

EXISTING STREAM ALIGNMENT, AND WHERE WHERE STRUCTURES WILL BE REMOVED.

STAGING AREA TO BE DETERMINED

BY THE ENGINEER AND THE

CONTRACTOR AT THE PRE

CONSTRUCTION CONFERENCE.

,---;_.3 (z)

TEMPORARY FISH SCREEN.

INSTALL PER WDFW STANDARDS

(SEE NOTE THIS SHEET)

_ -TOP BANK- - -

(D ALL WORK SHALL BE IN ACCORDANCE WITH HPA.

DURING CONSTRUCTION (IF REQUIRED) STREAM FLOW

SHALL BE DIVERTED THROUGH BYPASS PIPE. DIVERSION

SHALL BE APPROVED BY PROJECT ENGINEER

PRIOR TO REMOVING EXISTING CULVERTS.

PLACE BAGS FILLED WITH PEA GRAVEL TO SEAL

BYPASS INLET AND OUTLET (IF DIVERSION REQUIRED).

SCHEMATIC

ISOLATED

WORK

AREA

EXCAVATE EXISTING FILL.

- TOE---- . , _

PLACE NEW BED MATERIAL MIX AND REMOVE

BYPASS PIPE (IF INSTALLED).: ,,=,

SCREEN

iff?;iS]lf if}\

COVER ALL EXPOSED SOIL WITH STRAW MULCH

AND GRASS SEED. (SEE SHEET 11 FOR PLANTINGS).

REMOVE DIVERSION BAGS AND FISH SCREENS

BY HAND (IF INSTALLED).

NOTE: (IF BYPASS REQUIRED)

STREAM BYPASS TO BE INSTALLED AND ACTIVE PRIOR TO WORK

WITHIN OHW. BYPASS TO REMAIN ACTIVE DURING ALL TIMES UNTIL

CULVERT AND STREAM WORK IS COMPLETE.

WOVEN WIRE MESH PROFILE BAR PERFORATED PLATE

0.087 inch 1.75 mm 0.094 inch

2.2 mm 2.4 mm

(6-14 mesh) (3/.32 inch)

THE MAXIMUM OPENING APPLIES TO THE ENTIRE SCREEN

STRUCTURE INCLUDING THE SCREEN MESH, GUIDES, AND

SEALS. THE PROFILE BAR CRITERIA IS APPLIED TO THE

NARROW DIMENSION OF RECTANGULAR SLOTS OR MESH.

THE ALLOWABLE WOVEN WIRE MESH OPENINGS IS THE

GREATEST OPEN SPACE DISTANCE BETWEEN MESH WIRES.

* VERIFY SCREENING MATERIAL MEETS PERMIT REQUIREMENTS.

MESH SIZE

PEA GRAVEL SANDBAG

DAM 2' -0" HIGH MIN.

SHAPE

FLOW�

AND TYPE OF MATERIAL

FISH SCREEN. MONITOR AND

CLEAR DEBRIS AS REQUIRED.

PEA GRAVEL SANDBAG

OR NATIVE STREAM BED

GRAVEL PLACED BY

HAND.

TYPICAL DEWATERING SECITON (IF REQUIRED)

Scale: N.T.S. SHEET 6 OF 11

CAD NO. PARKC0DE-PR0JECTC0DE-YEAR-FILENAME

ACTION BY DATE

z

Cf) z z

DESIGNED KLK 09/31 /23

DRAWN TG 09/31/23

CHECKED (FIELD) XXX XX/XX/XX

CHECKED (HOOTS.) XXX XX/XX/XX

PROJECT ENGINEER

WASHINGTON

STATE

PARKS

AND

RECREATION

COMMISSION

WILLAPA HILLS

STATE PARK TRAIL

FISH PASSAGE &

HABITAT

RESTORATION

PROJECT

DEWATERING

NOTES & DETAILS

SCALE

IF SHEET IS LESS THAN

22"x.34" IT IS A REDUCED SET

PROPOSED FUTURE CL -

STREAMBED ALIGNMENT. CONSTRUCTION LIMITS�

44 LF EX. 36-INCH

CONCRETE CULVERT

NOT PART OF THIS CONTRACT.

@ 0.50%

US IE 83.98

OS IE 83.76

PLACE EXISTING ANGULAR ROCK FROM--�

CHANNEL TO SURROUND EXISTING CULVERT

OUTLET TO SUPPORT SLOPE AS NEEDED.

EXISTING STA 3+35.88 =---�

PROPOSED STA 1 0+83. 69

MATCH EXISTING CULVERT

ELEVATION 83. 76

2 O LF NEW ROUGH EN ED ------17r-;,�r7�=::::::____�L_����STREAMBED CHANNEL �/°"'

@ 1 0. 2 7 % z...______94 -

GRADE BREAK & ANGLE POINT

ELEVA Tl ON

1 .

;1:tr _ _____..64LF NEW

STREAMBED CHANNEL

@ 1.33%

EXISTING STA 2+52.12 =

PROPOSED STA 10+00.00

MATCH EXISTING ELEVATION 80.87

'-------91

... ,r.r···

HUB #1

91---------..._

93 ____ -./

Scale: 1" -

"----PK # 1

---------i---PROPOSED 100' LONG x 1 O' WIDE BRIDGE

(DESIGNED BY OTHERS)

'--------CONSTRUCTION LIMITS

20'

\._-61 LF EX. 2-36-INCH

CONCRETE CULVERT

@ 2.78%

US IE 83.1 0

OS IE 82.70

TO BE REMOVED

PROPOSED STREAMBED ALIGNMENT

NOTE:

ENGINEER TO DIRECT FINAL GRADING OF CHANNEL.

ENGINEER TO DIRECT PLACEMENT OF ROUGHENED

CHANNEL MATERIALS.

ALL TREES TO BE REMOVED FOR DEMOLITION TO

BE TEMPORARILY STOCKPILED TO BE PLACED IN

CHANNEL AS DIRECTED BY THE ENGINEER.

SHEET 7 OF 11

CAD NO. PARKC0DE-PR0JECTC0DE-YEAR-FILENAME

ACTION BY DATE

a.

a.

Cf) z z

DESIGNED KLK 09/31 /23

DRAWN TG 09/31/23

CHECKED (FIELD) XXX XX/XX/XX

CHECKED (HOOTS.) XXX XX/XX/XX

PROJECT ENGINEER

WASHINGTON

STATE

PARKS

AND

RECREATION

COMMISSION

WILLAPA HILLS

STATE PARK TRAIL

FISH PASSAGE &

HABITAT

RESTORATION

PROJECT

SCALE

STREAM BED

ALIGNMEN-r o"---1"

IF SHEET IS LESS THAN

EXISTING STA 3+35.88 = ----

PROPOSED STA 10+83.69

MATCH EXISTING CULVERT

ELEVATION 83. 76

PROPOSED BRIDGE DECK---

ELEVATION 99.00

(DESIGNED BY OTHERS)

EXISTING STA 2+52.12 = ---

-- 44 LF EX. 36-INCH

CONCRETE CULVERT

@ 0.50%

US IE 83.98

DS IE 83.76

PROPOSED STA 10+00.00 �

MATCH EXISTING ELEVATION 80.87 1::0--,· -----,-----,------------,-------------,---=-------;:---'-----r'-----=';=--:.._,-"-----,---=-=---cr=----'---A-

------,-----------,--- ��□---A-j--

I

I go-t--+--+---t---t--+--+--+--+--+--+--+------n-\-+--+-� / --4---'---++------+----+---+--------+-------+--+--+--+--+--+--+--+---+---+---+-/ .\�·---+f-

Bu a:

0+75 0+00 1+00

61 LF EX. 2-36-INCH

CONCRETE CULVERT

@ 2.78%

US IE 83.10

OS IE 82.70

TO BE REMOVED

2+00 /

64LF NEW STREAMBED___,

CHANNEL @ 1 .33%

\ r - - _I_ -f----l7 7 \ \ 3+00 4+00

5+00

�-PROPOSED FUTURE CL

STREAMBED GRADE

6+00

NOT PART OF THIS CONTRACT.

20LF NEW ROUGHENED

STREAMBED CHANNEL

@ 10.27%

�STA 10+63.69

GRADE BREAK & ANGLE POINT

ELEVATION 81 .83

PROPOSED STREAM PROFILE

Scale: Horz. 1" - 40' Ve rt. 1 " = 1 0 '

7+00

-C-

-,5 -C-

,0

-5

-C-u

-o

SHEET 8 OF 11

CAD NO. PARKC0DE-PR0JECTC0DE-YEAR-FILENAME

ACTION BY DATE

Q.

Q.

z z z

DESIGNED KLK 09/31/23

DRAWN TG 09/31/23

CHECKED (FIELD) XXX XX/XX/XX

CHECKED (HDQTS.) XXX XX/XX/XX

PROJECT ENGINEER

WASHINGTON

STATE

PARKS

AND

RECREATION

COMMISSION

WILLAPA HILLS

STATE PARK TRAIL

FISH PASSAGE &

HABITAT

RESTORATION

PROJECT

STREAM PROFILE

SCALE

o"---1"

IF SHEET IS LESS THAN

22"x34., IT IS A REDUCED SET

100' LONG x 1 O' W IDE BR IDGE

(BY OTHERS) DECK ELEVATION 99.00

111!!!!!1"-

_ -- 98

'---___ 94-------�

'-.---93---------, '------92------------, 91-----------, STA 1 +30. 95 (TRA IL)

END BR IDGE

STA 1 . 95 (TRA IL)

END TRA IL GRAD ING

MATCH EX IST ING

CAD NO. PARKC0DE-PR0JECTC0DE-YEAR-FILENAME

ACTION

DESIGNED

DRAWN

CHECKED (FIELD)

CHECKED (HDQTS.)

BY DATE

"'z

<fl z

<fl

5w Cl'.

z

KLK 09/31 /23

TG 09/31/23

XXX XX/XX/XX

XXX XX/XX/XX

PROJECT ENGINEER

STA 0+ 10.95 (TRA IL) �__,

BEG IN TRA IL GRAD ING

MATCH EX ISTING STA 1 +30.95 (TRA IL) WASHINGTON

TAPER TRA IL AS DIRECTED-----' PROPOSED BRIDGE & TRAIL PLAN END BRIDGE

BY THE ENG INEER

STA 0+30.95 (TRA IL

,,-------- STA 1 +50.95 (TRA IL)

BEG IN BR IDGE

,----------1 OO' LONG x 10' W IDE BR IDGE END TRA IL GRAD ING

(BY OTHERS) DECK ELEVAT ION 99.00 MATCH EXIST ING

�TTR,RAAJILL�G�R�AajD)EEl11�.77:5�%7a -===��T-----,-----1�1---�-l---=---=-�=:__:;�=:__:__:_���-------r��---iE�L�EV�A�T�ION 98.95

Scale: 1" = 1 O'

J

9ai------t1-- f--t--��-�\'___�/�

\ � I �-+-

________.'l

�------h--------l------L,o

81�1/l-+��-tt--A-�-------t---\-�--L-�5 '----TRA IL GRADE -0.25%

STA 0+ 10.95 (TRA IL) _ _J

BEGIN TRA IL GRADING

MATCH EXIST ING

ELEVAT ION 99.35

STA 0+30.95 (TRA IL) �__,

BEG IN BRIDGE

0+00

61 LF EX. 2-36- INCH-_,,,

CONCRETE CULVERT

@ 2.78%

US IE 83.10

DS IE 82.70

TO BE REMOVED

1+00 �-MONOL ITH IC PRECAST CONCR lfE

ABUTMENT DES IGNED BY OTHERS

�-PROPOSED CHANNEL CROSS-SECT ION

SEE DETAIL SHEET 10 OF 11

PROPOSED BRIDGE & TRAIL PROFILE

Scale: HORZ. 1" = 1 o' VERT. 1" = 2'

SHEET 9 OF 11

STATE

PARKS

AND

RECREATION

COMMISSION

WILLAPA HILLS

STATE PARK TRAIL

FISH PASSAGE &

HABITAT

RESTORATION

PROJECT

BRIDGE & TRAIL

PLAN & PROFILE

SCALE O .. ___ 1 '

IF SHEET IS LESS THAN

NOTE:

VARIES -

i PROPOSED CHANNEL r VARIES

NEW CHANNEL THALWEG

DISTURBED AREAS TO BE PLANTED AS PER

5.26% 34.4% 2.00%

THE PLANTING NOTES & SCHEDULE SHEET 11. 2 (MIN.)

,..-....-,.,������� l!!'"""l'�F 0.1' EDGE CHANNEL

1.0' MAIN CHANNEL

0.12' LOW FLOW CHANNEL

3.0' NEW STREAMBED

STREAMBED GRAVEL MIX 4.7' 4.7'

2.9' 2.9'

2.4' ..

2.4'

TYPICAL CHANNEL CROSS SECTION

1"- 2' rD

DECK EL.= 99.00

C

� "_ . ·"·I".

�-. ====· , .. -�"kfm;-"®}.' ·,• ,.,, -����-.�-I ,�D ��===��I ===�K=A �====

,·.-•··•·· co

INSTALL BACKWALL AS PER

BRIDGE MANUFACTURERS

SPECIFICATIONS.

LEGEND:

B

G

A 4" MINIMUM DEPTH CRUSHED

SURFACING TOP COURSE IN

ACCORDANCE WITH WSDOT STANDARD

SPECIFICATIONS FOR ROAD, BRIDGE

AND MUNICIPAL CONSTRUCTION 2022.

8. BALLAST ROCK IN ACCORDANCE WITH

WSDOT STANDARD SPECIFICATIONS

FOR ROAD, BRIDGE AND MUNICIPAL

CONSTRUCTION 2022.

C. GUARDRAIL DESIGNED BY OTHERS.

STREAMBED GRAVEL MIX

SEE NOTE THIS SHEET.

TYPICAL

N.T.S.

BRIDGE

D. ASSUMED PRE-CAST ABUTMENTS.

(2.5' WIDE x 1.5' HIGH x 14' LONG)

DESIGNED BY OTHERS.

E. MAINTAIN A MINIMUM 1 .5' CLEARANCE.

F. NON WOVEN GEOTEXTILE, MIRAFI 160H

OR EQUIVALENT.

G. COMPACTED NATIVE MATERIAL.

J yQ100 EL.- 91.66 yQ z EL.= 83.65

SECTION

H. COVER EXCAVATED FILL WITH 1 FOOT

OF TOPSOIL AND MULCH ACCORDING

TO SPECIFICATIONS. SEE PLANTING

SCHEDULE AND NOTES SHEET 11

I. BRIDGE DELINEATER

J. BRIDGE DEPTH 2.5'

K. 4.25" CORRUGATED DECK WITH

CONCRETE WEARING SURFACE

L. 3' MINIMUM WIDTH

M. ASSUMED 4' WIDE x 3' HIGH x 15'

LONG STRUCTURAL BASE MATERIAL.

GRAVEL MIX. IF STREAMBED

GRAVEL MATERIAL IS FOUND

IN GROUND WHILE EXCAVATING.

TO BE APPROVED BY THE

ENGINEER.

STREAMBED MATERIAL SPECIFICATION

*STREAMBED MATERIAL GRADATION

PER W.S.D.O.T. STD SPECIFICATION

FOR ROAD, BRIDGE AND MUNICIPAL

CONSTRUCTION SECTION 9.03

STREAMBED GRAVEL MIX AND ROUGHENED

CHANNEL MIX TO BE MIXED ONSITE

(EXCEPT BOULDERS, > 12").

STREAMBED GRAVEL MIX

D100 = 6" D84 - 2 1/4" D50 - 3/ 4" D36 = 1/4"

D10 = SILT

3" - 6" = 5% MAX.

1" - 3" = 35%

SAND - 1" = 55%

SAND/CLAY = 5% MIN .

1 PART 6" COBBLES, 9.03.11 (2)

9 PARTS STREAMBED SEDIMENT, 9.03.11 (1)

STREAMBED MATERIAL SHALL BE APPROVED BY

THE ENGINEER BEFORE PLACEMENT. PARTICLES

WITHIN A GIVEN RANGE SHALL BE DISTRIBUTED

EVENLY WITHIN RANGE.

ROUGHENED CHANNEL MIX

D100 = 36" D84 - 18" D50 - 7" D36 - 4 1 /4" D10 - 1/2"

28" - 36" - 10% . MAX.

1 8" - 28" - 20% 12" - 18" - 25% 6" - 12" = 5% 4" - 6" = 1 0% 2" - 4" = 10%

SAND - 2" = 10%

SAND/CLAY = 10% MIN.

ROUGHENED CHANNEL MATERIAL SHALL BE

APPROVED BY THE ENGINEER BEFORE

PLACEMENT. PARTICLES WITHIN A GIVEN RANGE

SHALL BE DISTRIBUTED EVENLY WITHIN RANGE.

3.0' DEPTH TRANSITION ROUGHENED CHANNEL

INTO STREAMBED MATERIAL GRADUALLY OVER 8'

IN LENGTH TO BE DIRECTED BY ENGINEER.

ROUGHENED CHANNEL ELEVATION TO BE

APPROXIMATELY 6" HIGHER THAN FINAL GRADE

TO ALLOW FOR SETTLING.

BRIDGE AND STRUCTURAL ELEMENTS BY OTHERS

(PRE-CAST ABUTMENTS, STRUCTURAL BASE

MATERIAL, AND OTHER DETAILS TO BE CONFIRMED

TO SUPPORT FINAL BRIDGE LOAD).

PROJECT NOTES & DETAILS SHEET 10 OF 11

CAD NO. PARKCODE-PROJECTCODE-YEAR-FILENAME

ACTION BY DATE

Cf) z iii w O'.

z

DESIGNED KLK 09/31/23

DRAWN TG 09/31/23

CHECKED (FIELD) XXX XX/XX/XX

CHECKED (HOOTS.) XXX XX/XX/XX

PROJECT ENGINEER

WASHINGTON

STATE

PARKS

AND

RECREATION

COMMISSION

WILLAPA HILLS

STATE PARK TRAIL

FISH PASSAGE &

HABITAT

RESTORATION

PROJECT

PROJECT NOTES &

DETAILS

SCALE

IF SHEET IS LESS THAN

�-CONSTRUCTION IMPACTED

AREA (REMAINING AREA)

REPLANTING

S cole: 1

-::c------

I

20'

HUB #1

DISTURBED AREA PLANTING NOTES:

EVENLY DISTRIBUTE SALMONBERRY, SNOWBERRY,

AND OREGON GRAPE AT 3-5' ON CENTER.

CAD NO. PARKC0DE-PR0JECTC0DE-YEAR-FILENAME

• PLANTING ZONES PROVIDED ARE APPROXIMATE. APPROPRIATE PLANT 0------------+---o

SPECIES AND DISTRIBUTION VARY WITH EACH INDIVIDUAL SITE AND

,---92 _____ __

93 ____ ___,,, '----PK # 1

PLANT SPECIES CHARACTERISTICS.

HERBACEOUS PLANTINGS MIGHT BE APPROPRIATE WITH WOODY

PLANTINGS.

PLANTING TO OCCUR WINTER OR EARLY SPRING .

PLANTS SHALL BE MIN. 2-YRS. OLD.

IF BARE ROOT STOCK USED, PLANTS SHALL BE PLANTED WITHIN

(2) DAYS.

EVENLY DISTRIBUTE CEDAR, MAPLE AND FIR

1 O' - 15' ON CENTER.

�- CONSTRUCTION IMPACTED REPLANTING

AREA (REMAINING AREA)

SOUTH FACING ROBERTSON ROAD SLOPE

SPACING

3' -5' ON CENTER

APPROXIMATELY 100 PLANTS

RIPARIAN PLANTINGS

1 GAL SNOWBERRY

1 GAL OREGON GRAPE

1 GAL RED ALDER

1 GAL SALMONBERRY

CONSTRUCTION IMPACTED REPLANTING AREA (REMAINING AREA)

SPACING

3'-5' ON CENTER

APPROXIMATELY 400 PLANTS

1 O' - 15' ON CENTER

APPROXIMATELY 65 PLANTS

DO NOT PLANT TREES WITHIN 15' OF

TRAIL OR BRIDGE, OR UNDERNEATH

BRIDGE (ALDER, CEDAR, MAPLE, FIR)

3'-5' ON CENTER

SLOPE UNDER BRIDGE

APPROXIMATELY 20 PLANTS

RIPARIAN PLANTINGS

1 GAL SNOWBERRY

1 GAL OREGON GRAPE

1 GAL SALMONBERRY

1 GAL WESTERN RED CEDAR

1 GAL BIG LEAF MAPLE

1 GAL DOUG FIR

LIVESTAKE WILLOW

LIVESTAKE SALMONBERRY

SHEET 11 OF 11

ACTION BY DATE

z en z Q en

UJ

C( z

DESIGNED KLK 09/30/23

DRAWN TG 09/30/23

CHECKED (FIELD) XXX XX/XX/XX

CHECKED (HDQTS.) XXX XX/XX/XX

PROJECT ENGINEER

WASHINGTON

STATE

PARKS

AND

RECREATION

COMMISSION

WILLAPA HILLS

STATE PARK TRAIL

FISH PASSAGE &

HABITAT

RESTORATION

PROJECT

PLANTING NOTES &

SCHEDULES

SCALE

o"---1"

IF SHEET IS LESS THAN

WHT- Fish Passage-Cover.pdf
Sheets and Views
COVER
WHT PAC CO BRDG PH2 - 100 Percent Design.pdf
Willapa Hills State Park Trail Construction Drawings_Stamped Reduced.pdf

File details come from the government source that posted it. Updated .