1-Restoration LindonHollow 100% Plan Set 6-2-2026.pdf

NOTE: PLANS ARE INTENDED TO BE PRINTED IN COLOR

Utah State Plane; NAD83 datum, North Zone, US Foot

Lindon Hollow Creek Restoration Plan April 2026 Sheet No.

Prepared By Owner

Sheet TitleLindon City Public Works

Lindon Hollow Creek Restoration Plan

West of Geneva Road between 200 S. and 1600 N.

Lindon, Utah County, Utah

SHEET ASSEMBLY ORDER

SHEET

IDENTIFIER

BINDING

ORDER

SHEET

TITLE

G 01 G 02 G 03

LS 101

LS 102

LS 103

LS 104

LS 301

LS 302

LS 303

LS 304

LS 305

LS 306

LS 307

LS 308

LS 309

LD 501

COVER SHEET

GENERAL NOTES

GENERAL NOTES

SITE PLAN AND PROFILE

SITE PLAN AND PROFILE

SITE PLAN AND PROFILE

SITE PLAN AND PROFILE

CROSS SECTION

CROSS SECTION

CROSS SECTION

CROSS SECTION

CROSS SECTION

CROSS SECTION

CROSS SECTION

CROSS SECTION

CROSS SECTION

SITE DETAILS

Cover Sheet G 01

GENERAL INFORMATION NOTES

Lindon Hollow Creek Restoration Plan April 2026 Sheet No.

Prepared By Owner

Sheet TitleLindon City Public Works

Project Limits All construction activity shall be confined to the project limit of disturbance including any staging/stockpile areas. Do not disturb, fill, excavate or work beyond project limits of disturbance without written permission from the Property Owner.

Permits and Regulatory Compliance Permits The Contractor is required to comply with all construction related requirements in each permit issued for the project. This includes the Floodplain Development Permit, the State of Utah Stream Alteration Permit, and the Clean Water Act Section 404 Permit that are the responsibility of the City to obtain.

The Contractor is responsible for obtaining the Utah Pollution Discharge Elimination System (UPDES) Storm Water General Permit for Construction Activities (UTR300000) Permit and submitting the NOI. A copy of the permit's Storm Water Pollution Prevention Plan must be submitted to the local storm water jurisdiction for review and approval, it must be updated during required inspections, and the updated permit is required to be on site during the construction period. A dewatering permit is anticipated.

The Contractor shall comply with all permit conditions associated with work within jurisdictional waters and floodplain areas. Construction activities shall remain within the permitted limits of disturbance and shall not expand beyond the approved construction footprint without written authorization from the City's Representative.

The Contractor in coordination with the City's Representative shall provide reasonable access for regulatory agency inspection when requested.

Wetlands Protection Fill material shall not be placed in any existing wetlands, either within or outside the project limits, unless specifically authorized by project permits and approved by the City.

Survey and Control Site Mapping Basis of bearing is Utah State Plane; NAD83 datum, North Zone, US Foot. Verification of survey mapping is the responsibility of the Contractor.

Survey Staking Survey staking is the responsibility of the Contractor. The Contractor may obtain CAD files from the Preparer for staking and layout purposes.

The Contractor is responsible to set the baseline survey control grade and confirm it with the City's Representative.

Utilities Utility locations have not been surveyed. It is the responsibility of the Contractor to perform all utility locations at least 48 hours prior to excavation, call Blue Stakes at 1(800) 662-4111. It is the responsibility of the Contractor to protect all existing sewer, water, gas and electric utilities encountered in the work. Any relocation or improvements of utilities shall be accurately noted on as-built drawings and issued to the City's Representative at the completion of the project.

Temporary Construction Facilities All temporary utilities and facilities shall be the responsibility of the Contractor. A construction trailer is not required. Potable water is not available on site and shall be provided by the Contractor.

The Contractor is responsible for job site conditions and the safety for human life during the course of construction. This requirement shall apply continuously during the period of construction and is not limited to normal working hours.

Environmental and Stormwater Protection Storm Water Pollution Prevention Plan Notes The Contractor is responsible for implementing and utilizing Best Management Practices (BMPs) to prevent storm water runoff and water pollution during construction activities. The Contractor is responsible for supplying equipment and plans that provide both dust and fire control during project construction. Use caution when working in areas along the creek to minimize sediment inputs. If potential hazardous materials are encountered, contact the City's Representative immediately.

Additional water quality and erosion control measures may be required.

Equipment operating near the creek shall minimize disturbance to the channel bed and banks. To the extent practicable, heavy equipment shall operate from the top of bank or designated access routes without the need for heavy machinery in the channel and work in a way to minimize erosion and sediment runoff to the creek.

Fueling, equipment maintenance, and storage of petroleum products shall not occur within 100 feet of the creek unless approved by the City's Representative. Spill containment materials shall be available on site at all times and any spill shall be immediately contained and reported to the Owner's Representative.

Construction activities adjacent to flowing water shall be conducted in a manner that minimizes turbidity and sediment discharge to the creek.

Work shall occur in a timely manner and during low flow to minimize erosion and sediment inputs.

Stream Bank Restoration Construction Guidance This project involves stream bank restoration work that requires specialized construction methods intended to restore natural floodplains, stabilize banks, enhance in-stream habitat features and improve vegetation type and conditions. Contractors shall review project plans and details carefully and conduct work in a manner to succeed in that goal.

Construction activities shall be performed during low flow conditions starting late July 2026 and finishing early fall, and seed/mulch/plant November - December 2026 or as otherwise approved by the City's Representative. Water elevations can fluctuate during the construction period. Conditions will be assessed with the City's Representative during the construction period.

The Contractor shall conduct all excavation, grading, and material placement activities in a manner that minimizes disturbance to the creek and prevents migration of excavated materials into the active channel.

Construction activities shall minimize disturbance to the existing creek channel, bank soils, and surrounding vegetation unless directed by the City Representative. Equipment access to the bank shall be limited to designated access routes and work areas.

Heavy equipment shall operate from stable ground whenever practicable.

Direct equipment operation within the active channel shall be minimized.

Disturbed bank soils shall be handled carefully to preserve soil structure and promote successful revegetation. Soil compaction shall be avoided.

Completed restoration work including graded banks, erosion control materials, and vegetation shall be protected from damage caused by equipment traffic.

The Contractor shall coordinate restoration activities with the City's Representative including bank grading, temporary soil root ball storage, erosion control, and vegetation installation to ensure successful revegetation and stabilized bank conditions.

Demolition Locate and verify all utility line locations prior to demolition and report any conflicts to the City's Representative.

Clearing and Grubbing Under the direction of the City's Representative, salvage desirable shrubs and root balls to be moved and transplanted to another location in the project area. Shrubs to be salvaged will be flagged by City's Representative prior to construction, green flagging for transplanting during construction and pink flagging for grubbing and removal. All existing vegetation not in designated excavation areas and not designated for removal shall be protected in place. Vegetation damaged outside of the limits of disturbance shall be replaced by the Contractor at their own expense.

Salvaged shrubs and root balls shall be temporarily stored in moist shaded locations and protected from drying. Root balls shall remain moist and shall be replanted as soon as practicable following removal.

The Contractor shall avoid unnecessary disturbance to the root zones of vegetation designated to remain. Equipment traffic, stockpiling of materials, and excavation activities shall be limited within these protected areas.

Earthwork and Grading Site Earthwork and Grading The Contractor is responsible for all site earthwork and grading activities to meet designs identified in plans and details, which are intended to show final result of design and anticipated water elevations during low flow. With City's Representative approval, modification may be made to suit job site conditions encountered during construction.

Backfill and embankment material shall be composed of suitable excavated materials and imported rocks, logs, gravel and topsoil.

Existing weedy topsoil shall be hauled off, and good topsoil shall be excavated and salvaged by Contractor for use in final grading and landscaping activities, as directed by the City's Representative.

Earthwork associated with bank restoration shall be performed in a manner that preserves soil structure and promotes vegetation establishment. Compaction of restored soils shall be avoided and/or repaired in preparation for seeding where needed.

Bank grading shall create a natural appearing surface consistent with design intent. Minor surface irregularities are acceptable and expected to mimic natural bank conditions.

Construction Spoils and Waste Handling Items encountered below grade and not shown on the drawings shall be brought to the attention of the City's Representative. All construction spoils and waste are the responsibility of the Contractor and shall be disposed of at an approved location.

Excavated materials designated for reuse within the restoration area shall be stockpiled in locations approved by the City's Representative and protected from erosion and sediment transport.

Site Construction Notes All planting and seeding activities shall occur in November-December 2026 or as otherwise approved by the City's Representative.

Where ground conditions are damp and equipment traffic would result in excessive ground compaction and rutting, use construction mats to access active work areas.

Use a water truck or other suitable watering device as needed to control dust.

Inspect paved roads adjacent to the project site regularly for mud tracking; sweep roadways as needed and ensure roads are left clean at the end of each shift.

General Notes G 02

GENERAL INFORMATION NOTES (CONTINUED)

Lindon Hollow Creek Restoration Plan April 2026 Sheet No.

Prepared By Owner

Sheet TitleLindon City Public Works General Notes G 03

The Contractor shall keep job site area clean, hazard free and dispose of all debris, rubbish and construction waste, and remove all abandoned materials from the site. All disturbed staging and access areas shall be restored to pre-construction conditions.

Construction activities shall follow a sequence that generally includes excavation, vegetation clearing and salvage, installation of Post Assisted Log Structure (PALS), installation of in-stream habitat features, earthwork and bank shaping, installation of restored rock terraced banks, installation of additional stabilization measures, and planting and vegetation work.

Construction shall be suspended during periods when saturated soil conditions would result in erosion, excessive rutting, compaction, or damage to restored banks.

Revegetation Plans - Sod, Seeding and Mulching, Cuttings and A revegetation plan has been developed to include a native riparian seed mix, native cuttings, native riparian, wetland, and upland plantings. The native plantings shall be grown and installed from a specialized contractor and directed by the City's Representative.

PALS

PALS posts shall be 5 to 10 feet in length and shall have a minimum diameter of 6 inches throughout their length. One end of each post shall be sharpened to facilitate installation by driving into the substrate up to 5 feet deep.

Installation of PALS posts may require specialized equipment, including but not limited to track-mounted excavators with post driving or auger attachments, or other equipment capable of safely and effectively advancing posts into the substrate.

PALS posts shall be driven to a depth sufficient to achieve stability, generally a minimum of one-half of the total post length embedded below existing grade unless otherwise shown in the project details.

Rootwad and Rock Streambank Treatment This section includes materials and and procedures for installing rootwad and rock streambank treatment. These specifications shall be regarded as minimum standards for design and construction. Submit data showing rootwad size and shape and rock source gradation, wear, and soundness, and placement technique 10 working days before use.

Different shaped rocks require slightly different construction techniques.

Rock Source:

Set up rock source location inspection meeting with the City's Representative and source material owner prior to delivering materials to project site. Identify stock piling procedure and provide historic results on reactivity of the rock or petrographic analysis of the proposed materials for rock.

References: AASHTO T 96: Resistance to Degradation of Small Size Coarse Aggregate by Abrasion and Impact in the Los Angeles Machine.

AASHTO T 104: Soundness of Aggregate by Use of Sodium Sulfate or Magnesium Sulfate.

Deliver and stock pile enough rootwad material on-site for the project.

Deliver and stock pile enough stone on-site for project. Remove any stone that does not conform to this specification. The City's Representative may reject any stones not conforming to this specification.

Stone quality:

Use angular stones that are sound and durable against disintegration, and that have their greatest dimensions no greater than three times their least dimensions. Durable, angular, hard, stone that is free from seams, cracks, or other structural defects.

Meet the following tests minimum requirements for stone.

Weighted loss not greater than 10 percent when tested according to

AASHTO T 104.C.

Provide stone sizes according to the details shown on the plans.

Rootwad:

Salvage and store approved trees from on site for use in rootwad structures. Rootwads consists of tree trunk and attached rootball 5 feet to 10 feet in length, 12-inch to 24-inch diameter or larger trunk, measured 4 feet above the roots with a 3 feet to 4 feet diameter rootball.

Footer and Header Log:

Shall be 10 feet in length with a minimum 10 inch diameter Preparation: Install surface and ground water control measures as needed to perform work in dry conditions. Water control measures include, but are not limited to diversions, culverts, sumps with pumps or other means necessary to maintain the level of groundwater below subgrade elevation and to divert surface water away from the work area.

Place all rootwad and rock during times of minimum flow or no flow conditions. Place rock units so that there are no vertical or horizontal joints in the wall of the retained slope.

Remove all topsoil, loose excavated materials, trees, timber debris, soft yielding material and concrete debris, and other objectionable materials from beneath the areas where the rock is to be placed and as shown on the plans. Do not block natural drainage layers or horizons within the channel bottom.

Place any approved on-site material and compact as specified to the elevation per plan detail. Do not backfill depression with shattered shale materials. Spread fill materials uniformly minimizing segregation.

Compact subgrade to 95 percent maximum density, AASHTO T 99, or to a 70 percent relative maximum density, AASHTO T 180.

Smooth graded areas maintaining specified slope with no more than 3 inches change unless closer tolerances are specified.

Do not place rock until the City's Representative has verified compaction requirements.

Placement of Rock Elements: Install the rock in place at the specified depth as shown in the plans. When installing rocks in the streambed or stacking rocks, the bottom anchor rock shall be buried 2/3 it's height. Do not group stones as a substitute for larger stone unless directed by City's Representative. Arrange individual stones as necessary by use of equipment or grapple device or hand to match the stone placement shown in the details on the plans. Provide a finished grade conforming to the lines and grades and adjacent surfaces as shown on the plans.

Manipulate the stone if necessary to provide interlocking of the angular stone surfaces. Fill in interspatial spaces between and behind larger rocks with smaller rock and gravel.

ABBREVIATIONS

APPROX APPROXIMATE

AVG AVERAGE

BM BENCHMARK

CAL CALIPER

CL CENTERLINE

CY CUBIC YARD

DIA DIAMETER

EG EXISTING GRADE

EL ELEVATION

EXIST EXISTING

FG FINISH GRADE

GB GRADE BREAK

HORIZ HORIZONTAL

HP HIGH POINT

IN INCHES

LF LINEAR FEET

LP LOW POINT

MAX MAXIMUM

MIN MINIMUM

MISC MISCELLANEOUS

NIC NOT IN CONTRACT

NTS NOT TO SCALE

OC ON CENTER

REQ'D REQUIRED

ROW RIGHT OF WAY

SF SQUARE FOOT

SHT SHEET

STA STATION

TYP TYPICAL

VERT VERTICAL

All construction, materials, and workmanship shall conform to the latest edition of the Utah Chapter APWA Manual of Standard Specifications and Standard Plans, along with all current supplements and local municipal amendments.

100 90 80 70 Distance from Right, feet

40 30 10 060 50 20

El ev at io n, fe et (2 x Sc al e)4545

200300

EXISTING

PLUNGE POOL EXISTING POOL

EXISTING

BOULDER STEP

EXISTING

BOULDER STEP

EXISTING

BOULDER STEP

0 / 4549.98

XS-23

GAS LINE

BURIED PIPE

FLOW

XS-21

XS-22

ADD EMBEDDED BOULDERS

DOWNSTREAM OF EXISTING BOULDER

STEP TO DEFINE LOW-FLOW NOTCH

AND CREATE "STAIR STEP".

EXISTING

BOULDER STEP

EXISTING

BOULDER STEP

EXISTING

BOULDER STEP

FLOODPLAIN SHELF: STRIP, STOCKPILE & SPREAD

TOPSOIL, REGRADE BANK PER CROSS SECTIONS.

(REVEGETATE WITH NATIVE RIPARIAN SEED AND

PLANTINGS PER REVEGETATION PLAN).

EXISTING

PLUNGE POOL EXISTING

POOL

BOULDER

CLUSTER, TYP.

CONSTRUCT POOL AT BEND W/ ROOTWAD

KEYED INTO BANK AT UPSTREAM POOL

HEAD. PLACE TOE/ SHOULDER BOULDERS

AT TAIL TO STABILIZE AND HOLD POOL.

ADD EMBEDDED BOULD

ERS D

OWNSTREAM O

F

EXISTIN

G BOULD

ER STEP TO D

EFIN

E

LO

W-FLO

W N

OTCH AND C

REATE "S

TAIR

STEP".

EXISTIN

G POOL

PROPOSED

POOL TYP.

ROUGHENED

RIFFLE TYP.

APPROXIMATE CUT

LINE TYP.

EXIST POWER POLE

CREATE LOW SWALE

TO MOVE WATER AWAY

FROM POWER POLE.

WOOD MULCH ACCESS PATH, TYP.

LONGITUDINAL VIEW: (SCALE: 1:30)

VERTICAL EXAGGERATED 2X

PLAN VIEW (SCALE: 1:30)

Feet

0 30 60

Lindon Hollow Creek Restoration Plan April 2026 Sheet No.

Prepared By Owner

Sheet TitleLindon City Public Works Site Plan and Profile LS 101

UTILITY PROTECTION:

The location of existing utilities as shown on these plans is based on records of the various utility companies and, where possible, from measurements taken in the field. The information is not to be considered exact or complete. The Contractor must notify Blue Stakes of Utah (Call 811) at least 48 hours prior to any excavation to request the exact location of the utilities in the field. It shall be the sole responsibility of the Contractor to protect and/or relocate all existing utilities which conflict with the proposed improvements. Any damage to existing utilities shall be repaired at the Contractor's expense to the satisfaction of the City and the utility owner.

FLOW

XS-19

XS-20

FLOODPLAIN SHELF: STRIP, STOCKPILE

& SPREAD TOPSOIL, REGRADE BANK

PER CROSS SECTIONS. (REVEGETATE

WITH NATIVE RIPARIAN SEED AND

PLANTINGS PER REVEGETATION PLAN).

ERODED BANK

ADD ROOTWAD /

WILLOW PLANTINGS

EXISTING ROCK

DEBRIS JAM

AT TAIL TO STABILIZE AND HOLD POOL.

ADD EMBEDDED BOULDERS DOWNSTREAM OF

EXISTING BOULDER STEP TO DEFINE

LOW-FLOW NOTCH AND CREATE "STAIR STEP".

ROOTWAD KEYED

INTO BANK TYP.

ADD EMBEDDED BOULDERS DOWNSTREAM OF

EXISTING BOULDER STEP TO DEFINE

LOW-FLOW NOTCH AND CREATE "STAIR STEP".

EXISTING POOL

EXISTING

BOULDER STEP

EXISTING

BOULDER STEP

WITH RUN

EXISTING BOULDER

STEPS

PROPOSED POOL TYP.

INSTALL BOULDERS AND

WILLOW PLANTINGS AT

ERODED BANK

EXISTING BACKWATER

BOULDER

CLUSTER TYP.

ROUGHENED

RIFFLE TYP.

ROOTWAD KEYED INTO BANK.

INSTALL 1 OR 2 DEPENDING ON

LOCATION.

APPROXIMATE CUT LINE TYP.

EXIST POWER POLE

CREATE LOW SWALE

TO MOVE WATER AWAY

FROM POWER POLE.

FLOODPLAIN SHELF: STRIP, STOCKPILE &

SPREAD TOPSOIL, REGRADE BANK PER

CROSS SECTIONS. (REVEGETATE WITH

NATIVE RIPARIAN SEED AND PLANTINGS

PER REVEGETATION PLAN).

APPROXIMATE CUT LINE TYP.

REMOVE

EXISTING

CONCRETE

XS-18.4

MAINTAIN A MIN. OF 3 FEET

HORIZONTAL SEPARATION

BETWEEN ALL CONSTRUCTION

WORK AND ANY EXISTING

UNDERGROUND UTILITY LINES.

EXISTING BOULDER STEP

PEDESTRIAN RAMP / TRAIL

BOULDER CLUSTER TYP.

ROUGHENED RIFFLE WITH

RAISE STREAM BED ~2"

EXISTING POWER POLE

300400500600700

EXISTING

ROCK DEBRIS JAM

EXISTING POOL

ROCK BACKWATER

EXISTING

BOULDER STEP

EXISTING

BOULDER STEP

EXISTING

BOULDER STEP

WITH RUN

RAISE STREAM BED ≈ 2'

LONGITUDINAL VIEW: (SCALE: 1:30)

VERTICAL EXAGGERATED 2X

Feet

0 30 60

Lindon Hollow Creek Restoration Plan April 2026 Sheet No.

Prepared By Owner

Sheet TitleLindon City Public Works

PLAN VIEW (SCALE: 1:30)

Site Plan and Profile LS 102

AutoCAD SHX Text

ROUGHENED RIFFLE

AutoCAD SHX Text

POOL

AutoCAD SHX Text

EXISTING BOULDER STEP

XS-18

XS-16

WOOD MULCH ACCESS PATH

WITH BOULDER SEATING

EXISTING BEAVER DAM

STRUCTURE

PROPOSED POOL TYP.

XS-17XS-16.5

FLOODPLAIN SHELF: STRIP, STOCKPILE &

SPREAD TOPSOIL, REGRADE BANK PER

CROSS SECTIONS. (REVEGETATE WITH

NATIVE RIPARIAN SEED AND PLANTINGS

PER REVEGETATION PLAN).

APPROXIMATE CUT LINE TYP.XS-18.1

XS-18.4

ROUGHENED RIFFLE WITH

LOW-FLOW THALWEG

ROOTWAD KEYED

INTO BANK TYP.

FLOW

BACKWATER

PROPOSED

POOL TYP.

POST ASSISTED LOG

STRUCTURE (PALS)

ROUGHENED RIFFLE

WITH LOW-FLOW

THALWEG

FLOODPLAIN SHELF: STRIP, STOCKPILE

& SPREAD TOPSOIL, REGRADE BANK

PER CROSS SECTIONS. (REVEGETATE

WITH NATIVE RIPARIAN SEED AND

PLANTINGS PER REVEGETATION PLAN)

J-HOOK BOULDER VANE TO

DEFLECT FLOW INTO NEW

CHANNEL ALIGNMENT

APRON KEYED INTO J-HOOK

PROPOSED

MAIN CHANNEL

AVOID

LARGE

WILLOW RIFFLE TYP.

SECONDARY CHANNEL (LOW FLOW SWALES)

REVEGETATE WITH WETLAND PLANTINGS WOOD MULCH

PEDESTRIAN RAMP / TRAIL

APPROXIMATE

CUT LINE TYP.

TERRACED ROCK RETAINING

FOR STABILIZATION

BOULDER CLUSTER TYP.

ROUGHENED RIFFLE WITH

LOW-FLOW THALWEG;

RAISE STREAM BED ~2"

EXISTING POWER POLE

WOOD MULCH

ACCESS PATH

BOULDER PLUG

BOULDER PLUG

BOULDER PLUG

ROUNDED

STREAM

SUBSTRATE AT

NEW CHANNEL.

70080090010001100

EXISTING

LOG JAM

EXISTING

POOL SILT

RAISE STREAM BED ≈ 2'

Feet

0 30 60

Lindon Hollow Creek Restoration Plan April 2026 Sheet No.

Prepared By Owner

Sheet TitleLindon City Public Works

LONGITUDINAL VIEW: (SCALE: 1:30)

VERTICAL EXAGGERATED 2X

PLAN VIEW (SCALE: 1:30)

Site Plan and Profile LS 103

AutoCAD SHX Text

J-HOOK

AutoCAD SHX Text

APRON

AutoCAD SHX Text

ROUGHENED RIFFLE

AutoCAD SHX Text

RAISED STREAM BED

AutoCAD SHX Text

POOL W/ ROOTWAD

AutoCAD SHX Text

RAISED STREAM BED

AutoCAD SHX Text

ROUGHENED RIFFLE

AutoCAD SHX Text

POOL

AutoCAD SHX Text

EXISTING BOULDER STEP

FLOW

XS-15

XS-14

XS-13

XS-12

XS-11

XS-10XS-9

EXISTING BOULDER STEP /

GRADE CONTROL

EXISTING

BOULDER STEP

EXISTING BOULDER

STEP AND POOL

COTTONWOOD

PLANTING /

ROOTWAD

EXISTING

PLUNGE POOL

EXISTING

POOL

EXISTING ROCK DAM

EXISTING POOL

FLOODPLAIN SHELF: STRIP, STOCKPILE

& SPREAD TOPSOIL, REGRADE BANK

PER CROSS SECTIONS. (REVEGETATE

WITH NATIVE RIPARIAN SEED AND

PLANTINGS PER REVEGETATION PLAN).

INSTALL BOULDERS TO

ENHANCE COVER AND

AESTHETICS.

EXISTING BEAVER

DAM STRUCTURE

WOOD MULCH ACCESS PATH

WITH BOULDER SEATING

EXISTING BEAVER DAM

STRUCTURE

PROPOSED POOL TYP.

ROOTWAD KEYED

INTO BANK TYP.

APPROXIMATE CUT

LINE TYP.

POST ASSISTED LOG

STRUCTURE (PALS)

WOOD MULCH

ACCESS PATH

El ev at io n, fe et (2 x Sc al e)

12001300140015001600

EXISTING

PLUNGE POOL

EXISTING

ROCK DAM EXISTING

BEAVER DAM

STRUCTURE

EXISTING

ROOTWAD

EXISTING POOL

EXISTING

POOL

EXISTING

BEAVER DAM

STRUCTURE

EXISTING BOULDER

STEP EXISTING BOULDER STEP /

GRADE CONTROL

EXISTING

POOL

EXISTING BOULDER STEP /

GRADE CONTROL

Feet

0 30 60

LONGITUDINAL VIEW: (SCALE: 1:30)

VERTICAL EXAGGERATED 2X

PLAN VIEW (SCALE: 1:30)

Site Plan and Profile LS 104

Lindon Hollow Creek Restoration Plan April 2026 Sheet No.

Prepared By Owner

Sheet TitleLindon City Public Works

El ev at io n, fe et

El ev at io n, fe et

WATER SURFACE

AT LOW FLOW

LAY BACK STEEP SLOPE AND

REVEGETATE WITH NATIVE SEED MIX

AND PLANTINGS

NATIVE SEED MIX AND

PLANTINGS ADDED

WHERE APPROPRIATE

EXISTING TRAIL / PATH

20 30 40 500 10

60 90 100 120 130 140 15070 80 110

4520 4520

Distance from Left, feet

3:1 SLOPE

EXISTING SIDE CHANNEL

EXISTING BEAVER DAM STRUCTURE

FLOW

XS-13

XS-12

XS-11

XS-10

XS -13 LINDON HOLLOW CREEKSECTION VIEW (SCALE: 1:10)

Feet 0 30 60

Lindon Hollow Creek Restoration Plan April 2026 Sheet No.

Prepared By Owner

Sheet TitleLindon City Public Works

PLAN VIEW (SCALE: 1:30)

Cross Section LS 301

XS 13

El ev at io n, fe et

60 90 100 120 130 140 15070 80 110

El ev at io n, fe et

4520 4520

Distance from Left, feet

3:1 SLOPE

ROOTWAD EMBEDDED

INTO EXISTING BANK

(SEE ROOTWAD DETAIL)

3' WIDE WOOD MULCH ACCESS

PATH WITH BOULDER SEATING

(BOULDERS TO BE APPROXIMATELY

18" ABOVE GROUND LEVEL).

WATER SURFACE AT LOW FLOW

LAY BACK STEEP SLOPE AND

REVEGETATE WITH NATIVE SEED MIX

AND PLANTINGS

NATIVE SEED MIX AND

PLANTINGS ADDED

WHERE APPROPRIATE

NATIVE SEED MIX AND

PLANTINGS

POOL

XS-15

XS -15 LINDON HOLLOW CREEKSECTION VIEW (SCALE: 1:10)

Feet 0 30 60

Lindon Hollow Creek Restoration Plan April 2026 Sheet No.

Prepared By Owner

Sheet TitleLindon City Public Works

PLAN VIEW (SCALE: 1:30)

Cross Section LS 302

XS 15

90 100 120 13080 110

El ev at io n, fe et

1.5

≈ 4'

≈ 4'

BACKWATER POOL

ROOTWAD

WATER SURFACE AT LOW FLOW

LOWER BANK ± 1'

BANK ROCK TO BE ANGULAR BOULDERS 24" TO 36" DIA.

FOOTER ROCK TO BE ANGULAR BOULDERS 30" TO 36" DIA.

KEY INTO BOTTOM OF CREEK BELOW SCOUR DEPTH.

ROUNDED STREAM SUBSTRATE AND FILTER (GRAVEL / COBBLE MIX)

MIN. 12" THICK (1-1/2" TO 4" DIA.) WITH OCCASIONAL COBBLES 4" TO 6" DIA.

EXISTING WALL

20 30 40 500 10

El ev at io n, fe et

Distance from Left, feet

BOULDER RETAINING WALL NOTES:

1. BEFORE CONSTRUCTION, ISOLATE THE WORK AREA TO PREVENT SEDIMENT FROM

ENTERING THE STREAM. GRADE THE BANK TO A DESIRED SLOPE.

2. SET ROCKS SO THEY SIT SECURELY WITH NO ROCKING.

3. STAGGER VERTICAL JOINTS.

4. ROCKS MUST BE ANGULAR AND FITTED TOGETHER TO INTERACT WITH ADJACENT

BOULDERS.

5. REMOVE LOOSE, SOFT, OR OTHERWISE UNSUITABLE FOUNDATION MATERIAL AND

REPLACE WITH COMPACTED STRUCTURAL FILL.

6. USE GRAVEL / COBBLE MIX TO FILL GAPS BETWEEN FACING ROCKS.

STREAM CHANNEL NOTES:

1. NEW MAIN CHANNEL (75% OF FLOW)

2. EXISTING CHANNEL CONVERTED TO SIDE CHANNEL

/ FLOODPLAIN BENCH (25% OF FLOW MAINLY AT

HIGHER STAGE)

EXCAVATE NEW MAIN CHANNEL FOR STREAM FLOW

RAISE CREEK BOTTOM ≈ 1'

LAY BACK STEEP SLOPE AND

REVEGETATE WITH NATIVE SEED MIX AND PLANTINGS

XS-16

XS-16.5

FLOW

XS -16 LINDON HOLLOW CREEKSECTION VIEW (SCALE: 1:10)

Feet 0 30 60

Lindon Hollow Creek Restoration Plan April 2026 Sheet No.

Prepared By Owner

Sheet TitleLindon City Public Works

PLAN VIEW (SCALE: 1:30)

Cross Section LS 303

XS 16

BOULDER RETAINING WALL NOTES:

1. BEFORE CONSTRUCTION, ISOLATE THE WORK AREA TO PREVENT SEDIMENT FROM

ENTERING THE STREAM. GRADE THE BANK TO A DESIRED SLOPE.

2. SET ROCKS SO THEY SIT SECURELY WITH NO ROCKING.

3. STAGGER VERTICAL JOINTS.

4. ROCKS MUST BE ANGULAR AND FITTED TOGETHER TO INTERACT WITH ADJACENT

BOULDERS.

5. REMOVE LOOSE, SOFT, OR OTHERWISE UNSUITABLE FOUNDATION MATERIAL AND

REPLACE WITH COMPACTED STRUCTURAL FILL.

6. USE GRAVEL / COBBLE MIX TO FILL GAPS BETWEEN FACING ROCKS.

≈ 4'

BANK ROCK TO BE ANGULAR BOULDERS 24" TO 36" DIA.

RAISE BANK ≈ 5"

RAISED BENCH WITH LOW-FLOW SWALES

WITH NATIVE WETLAND VEGETATION

90 100 120 13080 110

El ev at io n, fe et

1.5

≈ 4'

≈ 4'

FOOTER ROCK TO BE ANGULAR BOULDERS 30" TO 36" DIA.

KEY INTO BOTTOM OF CREEK BELOW SCOUR DEPTH.ROUNDED STREAM SUBSTRATE AND FILTER (GRAVEL / COBBLE MIX)

MIN. 12" THICK (1-1/2" TO 4" DIA.) WITH OCCASIONAL COBBLES 4" TO 6" DIA.

STREAM CHANNEL NOTES:

1. NEW MAIN CHANNEL (75% OF FLOW)

2. EXISTING CHANNEL CONVERTED TO SIDE CHANNEL

/ FLOODPLAIN BENCH (25% OF FLOW MAINLY AT

HIGHER STAGE)

WATER SURFACE AT LOW FLOW

EXCAVATE NEW MAIN

CHANNEL FOR STREAM FLOW

RAISE CREEK BOTTOM ≈ 1'

20 30 40 500 10

El ev at io n, fe et

Distance from Left, feet

LAY BACK STEEP SLOPE AND

REVEGETATE WITH NATIVE

SEED MIX AND PLANTINGS

ADD TOPSOIL

XS-16

XS-17XS-16.5

XS -16.5 LINDON HOLLOW CREEKSECTION VIEW (SCALE: 1:10)

Feet 0 30 60

Lindon Hollow Creek Restoration Plan April 2026 Sheet No.

Prepared By Owner

Sheet TitleLindon City Public Works

PLAN VIEW (SCALE: 1:30)

Cross Section LS 304

XS 16

.5

90 100 120 130 140 15080 110

El ev at io n, fe et

1.5

≈ 4'

≈ 4'

≈ 4'

FOOTER ROCK TO BE ANGULAR BOULDERS 30" TO 36" DIA.

KEY INTO BOTTOM OF CREEK BELOW SCOUR DEPTH.

BANK ROCK TO BE ANGULAR

BOULDERS 24" TO 36" DIA.

EXISTING WALL

LOWER BANK ≈ 1'

ROUNDED STREAM SUBSTRATE AND FILTER (GRAVEL / COBBLE MIX)

MIN. 12" THICK (1-1/2" TO 4" DIA.) WITH OCCASIONAL COBBLES 4" TO 6" DIA.

WATER SURFACE AT LOW FLOW

RAISED BENCH WITH LOW-FLOW SWALES

WITH NATIVE WETLAND VEGETATION

PERIODIC BOULDER CLUSTER GRADE CONTROL TO

MAINTAIN LOW-FLOW SWALES AND LIMIT DOWN CUTTING

ADD TOPSOIL

WOOD MULCH

PEDESTRIAN RAMP / TRAIL

20 30 40 500 10

El ev at io n, fe et

Distance from Left, feet

BOULDER RETAINING WALL NOTES:

1. BEFORE CONSTRUCTION, ISOLATE THE WORK AREA TO PREVENT SEDIMENT FROM

ENTERING THE STREAM. GRADE THE BANK TO A DESIRED SLOPE.

2. SET ROCKS SO THEY SIT SECURELY WITH NO ROCKING.

3. STAGGER VERTICAL JOINTS.

4. ROCKS MUST BE ANGULAR AND FITTED TOGETHER TO INTERACT WITH ADJACENT

BOULDERS.

5. REMOVE LOOSE, SOFT, OR OTHERWISE UNSUITABLE FOUNDATION MATERIAL AND

REPLACE WITH COMPACTED STRUCTURAL FILL.

6. USE GRAVEL / COBBLE MIX TO FILL GAPS BETWEEN FACING ROCKS.

STREAM CHANNEL NOTES:

1. NEW MAIN CHANNEL (75% OF FLOW)

2. EXISTING CHANNEL CONVERTED TO SIDE CHANNEL

/ FLOODPLAIN BENCH (25% OF FLOW MAINLY AT

HIGHER STAGE)

≈ 4'

EXCAVATE NEW MAIN

CHANNEL FOR STREAM FLOW

RAISE CREEK BOTTOM ≈ 6"

LAY BACK STEEP SLOPE AND REVEGETATE

WITH NATIVE SEED MIX AND PLANTINGS

POOL

BOULDER CLUSTER

XS-18

XS-17XS-16.5

XS-18.1

XS -17 LINDON HOLLOW CREEKSECTION VIEW (SCALE: 1:10)

Feet 0 30 60

Lindon Hollow Creek Restoration Plan April 2026 Sheet No.

Prepared By Owner

Sheet TitleLindon City Public Works

PLAN VIEW (SCALE: 1:30)

Cross Section LS 305

XS 17

90 100 120 13080 110

El ev at io n, fe et

1.5

≈ 4'

≈ 4'

FOOTER ROCK TO BE ANGULAR BOULDERS 30"

TO 36" DIA. KEY INTO BOTTOM OF CREEK

BELOW SCOUR DEPTH.

BANK ROCK TO BE ANGULAR BOULDERS 24" TO 36" DIA.

LOWER BANK ≈ 2'

RAISE CREEK BOTTOM ≈ 1'

WATER SURFACE AT LOW FLOW

APRON: ROUNDED STREAM SUBSTRATE AND FILTER

(GRAVEL / COBBLE MIX) MIN. 12" THICK (1-1/2" TO 4"

DIA.) WITH OCCASIONAL COBBLES 4" TO 6" DIA.

WOOD MULCH

PEDESTRIAN RAMP / TRAIL

20 30 40 500 10

El ev at io n, fe et

Distance from Left, feet

BOULDER RETAINING WALL NOTES:

1. BEFORE CONSTRUCTION, ISOLATE THE WORK AREA TO PREVENT SEDIMENT FROM

ENTERING THE STREAM. GRADE THE BANK TO A DESIRED SLOPE.

2. SET ROCKS SO THEY SIT SECURELY WITH NO ROCKING.

3. STAGGER VERTICAL JOINTS.

4. ROCKS MUST BE ANGULAR AND FITTED TOGETHER TO INTERACT WITH ADJACENT

BOULDERS.

5. REMOVE LOOSE, SOFT, OR OTHERWISE UNSUITABLE FOUNDATION MATERIAL AND

REPLACE WITH COMPACTED STRUCTURAL FILL.

6. USE GRAVEL / COBBLE MIX TO FILL GAPS BETWEEN FACING ROCKS.

XS-18

XS-17

XS-18.1

XS-18.4

XS -18 LINDON HOLLOW CREEKSECTION VIEW (SCALE: 1:10)

Feet 0 30 60

Lindon Hollow Creek Restoration Plan April 2026 Sheet No.

Prepared By Owner

Sheet TitleLindon City Public Works

PLAN VIEW (SCALE: 1:30)

Cross Section LS 306

XS 18

20 30 40 500 10

El ev at io n, fe et

Distance from Left, feet

90 100 120 13070 80 110

El ev at io n, fe et

RAISE CREEK BOTTOM ≈ 2'

FILL / ROUGHENED RIFFLE, MIN.

12" THICK,COBBLES 4" TO 6" DIA.

PROPOSED WATER SURFACE AT LOW FLOW

UNDERGROUND UTILITY (APPROXIMATE)

CREATE FLOOD PLAIN SHELF

EXISTING WATER SURFACE AT LOW FLOW

LOWER BANK ≈ 2'

GRAVEL FILTER (GRAVEL / COBBLE MIX)

PRESERVE EXISTING NATIVE

RIPARIAN VEGETATION

NATIVE SEED MIX

AND PLANTINGS

BANK ROCK TO BE ANGULAR

BOULDERS 24" TO 36" DIA.

XS-18

XS-17

XS-18.1

XS-18.4

XS -18.1 LINDON HOLLOW CREEKSECTION VIEW (SCALE: 1:10)

Feet 0 30 60

Lindon Hollow Creek Restoration Plan April 2026 Sheet No.

Prepared By Owner

Sheet TitleLindon City Public Works

PLAN VIEW (SCALE: 1:30)

Cross Section LS 307

.1

20 30 40 500 10

El ev at io n, fe et

Distance from Left, feet

90 100 120 13070 80 110

El ev at io n, fe et

RAISE CREEK BOTTOM ≈ 2'

FILL / ROUGHENED RIFFLE, MIN.

12" THICK,COBBLES 4" TO 6" DIA.

PROPOSED WATER SURFACE AT LOW FLOW

UNDERGROUND UTILITY (APPROXIMATE)

CREATE FLOOD PLAIN SHELF

EXISTING WATER SURFACE AT LOW FLOW

LOWER BANK ≈ 2'

GRAVEL FILTER (GRAVEL / COBBLE MIX)

PRESERVE EXISTING NATIVE

RIPARIAN VEGETATION

NATIVE SEED MIX

AND PLANTINGS

BANK ROCK TO BE ANGULAR

BOULDERS 24" TO 36" DIA.

XS-18 XS-18.1

XS-18.4

XS -18.4 LINDON HOLLOW CREEKSECTION VIEW (SCALE: 1:10)

Feet 0 30 60

Lindon Hollow Creek Restoration Plan April 2026 Sheet No.

Prepared By Owner

Sheet TitleLindon City Public Works

PLAN VIEW (SCALE: 1:30)

Cross Section LS 308

.4

20 30 40 500 10

El ev at io n, fe et

60 90 100 12070 80 110

El ev at io n, fe et

4540 4540

Distance from Left, feet

LAY BACK STEEP SLOPE AND

REVEGETATE WITH NATIVE SEED MIX

AND PLANTINGS

EXISTING TRAIL / PATH

WATER SURFACE AT LOW FLOW

XS-21 XS-22

XS -22 LINDON HOLLOW CREEKSECTION VIEW (SCALE: 1:10)

Feet 0 30 60

Lindon Hollow Creek Restoration Plan April 2026 Sheet No.

Prepared By Owner

Sheet TitleLindon City Public Works

PLAN VIEW (SCALE: 1:30)

Cross Section LS 309

XS 22

SCALE:

BOULDER CLUSTER BANK STABILAZATION (SHOWN AT POOL) TYPICAL

1"=2'-0"2

NATIVE RIPARIAN PLANTINGS

NOTES:

1. ROCKS SHALL BE DRY STACKED WITH NO MORTAR.

2. SET ROCKS SO THEY SIT SECURELY WITH NO ROCKING.

3. STAGGER VERTICAL JOINTS.

4. ROCKS MUST BE ANGULAR AND FITTED TOGETHER TO

INTERACT WITH ADJACENT BOULDERS.

10.0'

ROUNDED STREAM SUBSTRATE

ROCK (GRAVEL / COBBLE MIX)

6-INCH THICK MIN. (1" TO 4" DIA.)

LOW FLOW

2.0'

BANKFULL

BOULDER ROCK

BANKLINE, OUTSIDE

BEND (18" TO 24" DIA.)

INSIDE BEND

DEPOSITION

SLOPE2.5:1

SCALE:

RIFFLE TYPICAL

1"=2'-0"1

ROUNDED STREAM SUBSTRATE ROCK

(GRAVEL / COBBLE MIX) 12-INCH

THICK MIN. (1-1/2" TO 10" DIA.)

1.5'

4.5'

NATIVE RIPARIAN PLANTINGS

SLOPE1:1 SLOPE

1:1

GRAVEL FILTER LAYER, 4"

THICK (1/2" TO 1-1/2" SIZE).

2.3'

GRAVEL FILTER LAYER, 4"

THICK (1/2" TO 1-1/2" SIZE)

ROUNDED STREAM SUBSTRATE

ROCK (GRAVEL / COBBLE MIX)

6-INCH THICK MIN. (1" TO 4" DIA.)

LOW FLOW

ROOTWAD (8' ± LONG)

BANKLINE, OUTSIDE BEND

NATIVE RIPARIAN PLANTINGS

8.0'

BANKFULL

INSIDE BEND

DEPOSITION

SLOPE2.5:1

SCALE:

ROOTWAD TYPICAL

1"=2'-0"3

FOOTER LOG (10' ± LONG)

ANGULAR BOULDERS

18" TO 24" DIA.

SCALE:

POST ASSISTED LOG STRUCTURE (PALS) TYPICAL

1"=2'-0"4

ADD COYOTE WILLOW / YELLOW WILLOW /

DOGWOOD CUTTINGS (3'-4' LONG) PER

REVEGETATION PLAN.

NON-TREATED WOOD POSTS:

5' - 10' LONG AND MIN. DIA. OF

6-INCHES THROUGHOUT THE

ENTIRE LENGTH OF THE LOG.

DRIVE POSTS AT ANGLES TO WEDGE

AND PIN WOOD DEBRIS TOGETHER.

ATTEMPT TO DRIVE AT LEAST 1/4 TO

1/3 OF POST INTO STREAM BED.

PIN TOP MOST LOGS WITH CRISSCROSSED POSTS (2 - 3 PER

LOG) TO CAP STRUCTURE AND PREVENT WOOD MATERIAL

BELOW FROM FLOATING UP AND OUT DURING HIGH FLOWS.

CONSTRUCT PALS USING A FULL RANGE OF WOODY MATERIAL SIZES,

INCLUDING BRANCHES, LIMBS, AND LOGS, INTERLOCKED BETWEEN

POSTS. WOODY MATERIAL SHALL BE A MIN. OF 4' IN LENGTH, WITH

PRIMARY STRUCTURAL PIECES PREDOMINANTLY 5' - 10' LONG.

PROVIDE REARGUARD, BRANCHED MATERIAL (NOT UNIFORMLY

STRAIGHT) TO ENHANCE INTERLOCKING AND STRUCTURAL

COMPLEXITY. ALL WOODY MATERIAL SHALL BE SEASONED, DEAD,

AND DRY (MIN. 1 YEAR), AND FREE OF INVASIVE SPECIES.

LOW FLOW

8.0'

LOW FLOW

BANKFULL

Lindon Hollow Creek Restoration Plan April 2026 Sheet No.

Prepared By Owner

Sheet TitleLindon City Public Works Site Details LD 501