20 Attachment A_DrawingsGardinerDesign_6.10.26.pdf

PDF 23 MB Posted Jun 29, 2026

Attached to: 700204 - Gardiner Diversion Improvement Projects
Solicitation number: JUS-IFB-2026-0323
Issued by: Fergus County, Montana

About this file

Written by GovTribe AI · Jul 6, 2026

This is a design drawing package for the Gardiner Diversion Improvements Project prepared by Tetra Tech for the State of Montana Natural Resource Damage Program, located at Warm Springs Creek near Anaconda, Montana. The project involves comprehensive infrastructure improvements including construction of a fish-passable rock ramp and sluiceway, installation of three modular Farmers Conservation Alliance (FCA) fish screens, a pre-fabricated 8-foot Parshall flume for flow measurement, fish return pipes, concrete headgates and walls, and associated site work. The design is issued for bid as 100% plans dated June 2026 and includes detailed drawings covering site plans, temporary bypass channels, rock ramp and sluiceway construction, fish screening infrastructure, flume installation, structural details, and specifications. Design criteria specify delivery of a minimum 60 cubic feet per second (CFS) irrigation water supply and 7 CFS fish return/bypass water through headgates, with the system designed to withstand the 100-year flood event (951.50 CFS), improve upstream fish passage and public river safety, and eliminate fish entrainment into the Gardiner Ditch.

The design drawings establish comprehensive technical requirements for construction including rock riprap material specifications (MDT Class 1 and Class 2), concrete wall construction with detailed reinforcement schedules, buried cutoff liner installation, and boulder fish resting (BFR) habitat placement with specific elevation and spacing requirements. The drawings specify material tolerances for earthwork (horizontal 1.0 feet, vertical 0.25 feet) and concrete structures (horizontal 0.25 feet, vertical 0.1 feet), detail temporary construction access routes with maximum 2:1 side slopes, designate staging areas for equipment and materials, and identify dewatering discharge areas. Contractor responsibilities include verification of existing site conditions, utility locates through the One Call center, and coordination with owner-provided FCA fish screens. The project requires temporary coffer dams, a bypass channel for construction-phase dewatering, and careful management of excess excavated material stockpiled approximately 0.5 miles southwest of the site, with final site restoration using onsite native materials over minimum 30-lineal-foot transition zones at 5% maximum slope gradients.

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USGS 12323760

www.tetratech.com

CLIENT INFORMATION:PROJECT LOCATION:

PROJECT DESCRIPTION / NOTES:

Tt PROJECT No.: CLIENT PROJECT No.:

ISSUED:

NATURAL RESOURCE DAMAGE PROGRAM

GARDINER DIVERSION IMPROVEMENTS PROJECT

ANACONDA, MONTANA

WARM SPRINGS CREEK AT GALEN RD

ANACONDA, MT 59711

117-002166-24007

NATURAL RESOURCE DAMAGE PROGRAM

1720 9TH AVE

HELENA, MT 59601

828 Great Northern Blvd., 3rd Floor

Helena, Montana 59601

PHONE: +1 (406) 443-5210

VICINITY MAP: NOT TO SCALE

MT HWY 48

MT HWY 1

ANACONDA ~1 MILE

PROJECT LOCATION

N N

SCALE:

200' 400' 800'

1'' = 400'

PREPARED FOR:

LOST CREEK RACEWAY

JUNE 2026

100% DESIGN - ISSUED FOR BID

PROJECT LOCATION

WARM SPRINGS CREEK

2023 NAIP IMAGERY

SHEET INDEX

NUMBER TITLE

- COVER

G-1 GENERAL LEGEND & NOTES

G-2 EXISTING SITE PLAN

C-1 OVERALL SITE PLAN

C-2 DIVERSION & INTAKE SITE PLAN

C-3 TEMPORARY BYPASS PLAN

C-4 ROCK RAMP PLAN & PROFILE

C-5 ROCK RAMP GRADING PLAN

C-6 SLUICEWAY PLAN & PROFILE

C-7 ROCK RAMP & SLUICEWAY SECTIONS

C-8 DITCH PLAN & PROFILE

C-9 FCA SCREEN & FISH RETURN PIPE SECTIONS

C-10 FLUME PLAN & PROFILE

D-1 DETAILS

D-2 GATE DETAIL

S-1 STRUCTURAL NOTES

S-2 STRUCTURAL PLAN

S-3 STRUCTURAL SECTIONS

S-4 STRUCTURAL DETAILS

S-5 STRUCTURAL DETAILS

DESIGN CRITERIA:

· PROVIDE MINIMUM 60 CUBIC FEET PER SECOND (CFS) IRRIGATION WATER AND 7 CFS FISH RETURN/BYPASS WATER

(67 CFS TOTAL THROUGH HEADGATES) WITH 100 CFS ABOVE DIVERSION

· WITHSTAND THE HYDRAULIC AND SCOUR FORCES OF THE 1.0% ANNUAL-CHANCE FLOOD, Q100, UP TO 951.50 CFS

· IMPROVE UPSTREAM FISH PASSAGE AND PUBLIC RIVER SAFETY

· ELIMINATE FISH ENTRAINMENT TO GARDINER DITCH

LOST CREEK RACEWAY

ACCESS DRIVE

EXCESS EARTHWORK MATERIAL

STOCKPILE LOCATION,

SEE NOTES ON C-1

03/26/2026

Attachment A x x

EXISTING MAJOR CONTOUR & ELEVATION LABEL

EXISTING MINOR CONTOUR

LEGEND ABBREVIATIONS

& AND

Ø DIAMETER

Δ DIFFERENCE

# NUMBER

% PERCENT

AASHTO AMERICAN ASSOCIATION OF STATE HIGHWAY AND TRANSPORTATION OFFICIALS

ASTM AMERICAN SOCIETY FOR TESTING AND MATERIALS

BOE BOTTOM OF EXCAVATION

CF CUBIC FEET

CMP CORRUGATED METAL PIPE

CMPA CORRUGATED METAL PIPE ARCH

CPP CORRUGATED PLASTIC PIPE

CY CUBIC YARD

D POINT DESCRIPTION

DIA DIAMETER

DWG DRAWING

E EAST

EG EXISTING GROUND

EL./ELEV. ELEVATION

FCA FARMERS CONSERVATION ALLIANCE

FG FINISH GROUND

FO FIBER OPTIC

G GAS LINE

HDPE HIGH-DENSITY POLYETHYLENE

H:V HORIZONTAL:VERTICAL (SLOPE)

IE INVERT ELEVATION

ISI INTAKE SCREENS, INC.

LF LINEAL FEET

MAX. MAXIMUM

MH MANHOLE

MIN. MINIMUM

MISC MISCELLANEOUS

MPWSS MONTANA PUBLIC WORKS STANDARD SPECIFICATIONS

N NORTH

NTS NOT TO SCALE

OE OVERHEAD ELECTRIC

PIP PLASTIC IRRIGATION PIPE

PVC POLYVINYL CHLORIDE

PW POTABLE WATER

QTY QUANTITY

RD ROAD

RR RAILROAD

ROW RIGHT OF WAY

S SOUTH

SF SQUARE FEET

STA STATION

SS SANITARY SEWER

STD STANDARD

SY SQUARE YARD

TOF TOP OF FOUNDATION

TOW TOP OF WALL

TYP TYPICAL

UP UTILITY POLE

UG UNDERGROUND

W WEST

Z POINT ELEVATIONMAPPING SOURCES

LiDAR: PUBLICLY AVAILABLE QL1 LIDAR DATA COLLECTED FOR MONTANA DEPARTMENT OF NATURAL

RESOURCES AND CONSERVATION IN 2019.

AERIAL IMAGERY: DRONE IMAGERY COLLECTED BY TETRA TECH IN NOVEMBER 2024.

COUNTRY WIDE NAIP 2023 IMAGERY PROVIDED BY MONTANA STATE LIBRARY.

BATHYMETRIC SURVEY: TETRA TECH, 2025.

PROPERTY BOUNDARY DATA: MONTANA CADASTRAL ONLINE DATABASE.

NO PROPERTY BOUNDARY SURVEY HAS BEEN COMPLETED FOR THIS PROJECT.

MAPPING DATUM

HORIZONTAL DATUM (UNITS): MONTANA STATE PLANE COORDINATES, NAD 83 (INTERNATIONAL FEET)

VERTICAL DATUM (UNITS): NAVD88 (US SURVEY FEET)

GENERAL NOTES

1. THE CONTRACTOR SHALL BE RESPONSIBLE FOR VERIFICATION OF CURRENT CONDITIONS AND LOCATIONS OF ALL

EXISTING ITEMS WITHIN OR ADJACENT TO THE WORK, OR THAT MAY BE DISTURBED BY THE WORK.

2. THE LOCATIONS OF ALL SUBSURFACE CONDITIONS ARE BASED ON THE AVAILABLE INFORMATION AND SHOWN

LOCATIONS MAY NOT BE REPRESENTATIVE.

3. THE CONTRACTOR SHALL VERIFY THE LOCATIONS OF ALL EXISTING SURFACE FEATURES AND OTHER EXISTING ITEMS, INCLUDING UTILITIES.

4. CONTRACTOR SHALL OBTAIN A CURRENT LOCATE OF ALL UNDERGROUND FACILITIES FROM THE ONE CALL UTILITIES UNDERGROUND LOCATION CENTER (800-424-5555) PRIOR TO PERFORMING ANY EXCAVATING OR OTHER

GROUND-PENETRATING ACTIVITIES.

5. DRAWINGS SHALL BE PLOTTED IN COLOR FOR REALIZATION OF ALL DESIGN FEATURES.

6. DESIGN DIMENSION TOLERANCES SHALL MEET THE FOLLOWING UNLESS OTHERWISE SPECIFIED ON THE PROJECT

DOCUMENTS.

EARTHWORK FINAL GRADING: HORIZONTAL = ±1.0' AND VERTICAL = ±0.25'

ROCK AND RIPRAP FEATURES: HORIZONTAL = ±1.0' AND VERTICAL = ±0.25'

CONCRETE AND METAL STRUCTURES: HORIZONTAL = ±0.25' AND VERTICAL = ±0.1'

PIPES: HORIZONTAL = ±0.5' AND VERTICAL = ±0.1'

FENCES: HORIZONTAL = ±1.0'

FENCE

EXISTING

TEMPORARY COFFER DAM

ROCK RAMP MATERIAL

PROPOSED

APPROXIMATE EARTHWORK EXTENTS

BOULDER FISH RESTING (BFR) HABITAT

PROPERTY BOUNDARY & OWNER LABEL

ACCESS ROAD

FINAL GROUND MAJOR CONTOUR & ELEVATION LABEL

FINAL GROUND MINOR CONTOUR

GUARDRAIL

X-XX

SECTION / DETAIL TITLE1

C-1 SCALE

SECTION AND DETAIL DESIGNATION

VIEW DIRECTION

(NO TRIANGLE ON DETAIL)

SECTION IDENTIFICATION

OR DETAIL NUMBER

DRAWING NUMBER WHERE

SECTION / DETAIL IS DRAWN

SECTION / DETAIL NUMBER

DRAWING NO. WHERE SECTION / DETAIL

WAS CUT / TAKEN. BLANK IF SECTION /

DETAIL APPLIES TO MULTIPLE DRAWINGS

SECTION CUT / DETAIL CALLOUT SYMBOL

TITLE FOR SECTION VIEW / DETAIL

RIVER CENTERLINE & STATIONING

OVERHEAD ELECTRIC & POWER POLE

STAGING AREA BOUNDARY

SURFACE FLOW DIRECTION

WATER PIPE

WALKWAY

GRADE LINES

HEADGATE

10+00

BURIED GAS LINEG

MDT CLASS 1 ROCK RIPRAP MATERIAL

OWNER-PROVIDED ITEMS (FISH SCREEN)

Q (FLOW)

BURIED ROCK MATERIAL (FINISH GRADE)

NEW CONCRETE

WATER SURFACE ELEVATION

ooooo

PHOTO #

CONCRETE

CONTROL POINT

HEADGATE

PHOTO LOCATION & VIEW DIRECTION

DEMOLITION AND REMOVAL

MDT CLASS 2 ROCK RIPRAP MATERIAL

FO BURIED FIBER OPTIC LINE

BURIED ELECTRIC LINEE

TEMPORARY GROUND MAJOR CONTOUR & ELEVATION LABEL

TEMPORARY GROUND MINOR CONTOUR

METAL STRUCTURE

G-1GENERAL LEGEND & NOTES

DYW

DYW/KMH

MDB

MARK DATE DESCRIPTION BY

CHKD:

DRWN:

PROJ:

DESN:

www.tetratech.com

6/ 5/

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117-002166-24007

GARDINER DIVERSION IMPROVEMENTS PROJECT

ANACONDA, MONTANA

NATURAL RESOURCE DAMAGE PROGRAM

828 Great Northern Blvd, 3rd Floor Helena, Montana 59601

PHONE: +1 (406) 443-5210

P: 3 N: 706737.370 E: 1109144.469 Z: 5103.66

D: CP3 RPC

O E

E E

x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x

O E

P: 1 N: 706861.676 E: 1109340.043 Z: 5104.45

D: CP1 RPC

P: 2 N: 706820.120 E: 1109085.983 Z: 5103.59

D: CP2 RPCLO

ST C

REEK R

ACEWAY ASSOC IN

ZIM

MERMAN LO

STATE O

F M

ONTANA

ARCO

ENVIR

ONMENTAL

REMEDIATIO

510051

MARK DATE DESCRIPTION BY

CHKD:

DRWN:

PROJ:

DESN:

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6/ 5/

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117-002166-24007

GARDINER DIVERSION IMPROVEMENTS PROJECT

ANACONDA, MONTANA

NATURAL RESOURCE DAMAGE PROGRAM

828 Great Northern Blvd, 3rd Floor Helena, Montana 59601

PHONE: +1 (406) 443-5210 03/26/2026

G-2EXISTING SITE PLAN

DYW

DYW/KMH

MDB

SCALE:

20' 40' 80'

1'' = 40'

EXISTING CONCRETE INTAKE

STRUCTURE AND HEADGATE

8.5'W x 5.5'T x 8.0'L

IE = 5098.50

GALEN

ROAD

EXISTING CONCRETE AND STEEL

PIN-AND-PLANK-STYLE DIVERSION

PLANKS UP CREST ELEV. = 5101.00

PLANKS DOWN CREST ELEV. = 5098.30

EXISTING PARSHALL FLUME

PROPERTY BOUNDARY (TYP.)WARM SPRINGS CREEK

EXISTING GATE

GARDIN

ER D

ITC

EXISTING FENCE (TYP.)

EXISTING BRIDGE

EXISTING WOODEN STRUCTURE

(DO NOT DISTURB)

PHOTO 1: EXISTING HEADGATE AND DIVERSION (PLANKS UP)

(PHOTO FROM NOVEMBER 2015)

PHOTO 2: EXISTING HEADGATE AND DIVERSION (PLANKS DOWN)

(PHOTO FROM NOVEMBER 2024)

PHOTO 3: EXISTING FLOW MEASUREMENT FLUME (8' PARSHALL)

(PHOTO FROM NOVEMBER 2015)

PHOTO #1

PHOTO #2

PHOTO #3

OVERHEAD ELECTRICAL LINE (TYP.)

NOTES:

1. EXISTING UTILITY INFORMATION, BOTH ABOVE AND BELOW GROUND,

PROVIDED BY OTHERS AND MAY NOT BE COMPLETE OR SHOW

EXACT LOCATIONS.

2. CONTRACTOR SHALL OBTAIN A CURRENT LOCATE OF ALL

UNDERGROUND FACILITIES FROM THE ONE CALL UTILITIES

UNDERGROUND LOCATION CENTER (800-424-5555) PRIOR TO

PERFORMING ANY EXCAVATING OR OTHER GROUND-PENETRATING

ACTIVITIES.

EXISTING MEMORIAL

(DO NOT DISTURB WITHIN 15')

ABANDONED DITCH

EXISTING GATE

EXISTING CULVERT AND

CONCRETE HEADWALL

(DO NOT DISTURB)

REMOVE METAL FRAME AND PLACE

IN STAGING AREA FOR OWNER USE

o o o o o o o o o o o o o

O E

E E

x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x

O E

CP2

CP1

CP3

ST C

REEK R

ACEWAY ASSOC IN

ZIM

MERMAN LO

STATE O

F M

ONTANA

ARCO

ENVIR

ONMENTAL

REMEDIATIO

FISH RETURN

PIPES TO RIVER

(TYP. OF 3)

GALEN

ROAD

INLET FLUME

(TYP. OF 3)

FILL EXISTING SECTION OF DITCH AND REROUTE

FROM SCREEN OUTLETS TO EXISTING DITCH

8' PARSHALL FLUME

LOG GRATE

SEDIMENT SLUICE

WITH GATES

WARM SPRINGS CREEK

MARK DATE DESCRIPTION BY

CHKD:

DRWN:

PROJ:

DESN:

www.tetratech.com

6/ 8/

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117-002166-24007

GARDINER DIVERSION IMPROVEMENTS PROJECT

ANACONDA, MONTANA

NATURAL RESOURCE DAMAGE PROGRAM

828 Great Northern Blvd, 3rd Floor Helena, Montana 59601

PHONE: +1 (406) 443-5210 03/26/2026

ROCK RAMP

NEW CONCRETE WALL

(TYP.)

UPSTREAM BURIED

ROCK ANCHOR

DOWNSTREAM

BURIED ROCK

ANCHOR

ROCK RAMP

CREST

WALKWAY WITH GUARDRAIL

SCALE:

20' 40' 80'

1'' = 40'

MODULAR FCA SCREEN

(TYP. OF 3)

MDT CLASS 2

ROCK RIPRAP

(TYP.)

C-1OVERALL SITE PLAN

DYW

DYW/KMH

MDB

PROPERTY

BOUNDARY

(TYP.)

CONSTRUCTION

ACCESS ROUTE

(TYP.)

ACCESS GATE

TYP. SIDE SLOPE (H:V)

EXISTING GROUND

(TYP.)

TYPICAL DITCH INTAKE TO SCREEN SECTION

NOT TO SCALE

COFFER DAM (TYP.)

TEMPORARY

BYPASS CHANNEL

APPROXIMATE

EARTHWORK

EXTENTS (TYP.)

NOTES:

1. CONTRACTOR SHALL FURNISH A TEMPORARY 12'-WIDE (MINIMUM) CONSTRUCTION ACCESS ROAD WITH MAXIMUM 2:1 (H:V) SIDE SLOPES, INTERSECTING THE DESIGN 8' PARSHALL

FLUME FOOTPRINT.

2. REMOVE AND REPLACE ALL EXISTING FENCE AT LOCATIONS THAT CONFLICT WITH SITE ACCESS, TEMPORARY, OR PERMANENT PROJECT FEATURES. DESIGN PLANS MAY NOT

SHOW ALL EXISTING FENCES.

3. NO STAGING OR STORING OF EQUIPMENT OR MATERIALS SHALL OCCUR OUTSIDE THE PROJECT STAGING AREAS WITHOUT APPROVAL OF ENGINEER.

4. EXCESS EARTHEN MATERIAL NOT REQUIRED FOR FINAL GRADING SHALL BE STOCKPILED AT THE LOCATION SHOWN ON THE COVER SHEET.

STAGING AREA

DITCH BOTTOM WIDTH INCREASES

FROM 9' AT THE INTAKE OUTLET TO

20' AT THE FCA INLET FLUMES.

1.0' MIN. THICKNESS

MDT CLASS 1

ROCK RIPRAP

(TYP.)

FINISH GROUND

(TYP.)

SEE SHEET C-8 FOR

DITCH INVERT ELEVATION

MDT CLASS 1

ROCK RIPRAP

(TYP.)

SLUICEWAY

EXCESS EARTHWORK MATERIAL

DROP LOCATION APPROXIMATELY

0.5 MILES SOUTHWEST,

SEE COVER

LOST CREEK RACEWAY

ACCESS DRIVE

EXISTING BRIDGE

(DO NOT USE)

APPROXIMATE EARTHWORK EXTENTS FOR TEMPORARY

CONSTRUCTION ACCESS DITCH CROSSING,

SEE NOTES

EXISTING MEMORIAL,

NO DISTURBANCE WITHIN 15'

MIN. TOP OF ROCK EL = 5103.00

NOTE:

1. SEE SHEET C-8 FOR ROCK RIPRAP LOCATIONS.

DEWATERING

DISCHARGE AREA

DEWATERING

DISCHARGE AREA

REMOVE ALL TREES/BRUSH WITHIN

3-FEET OF DITCH TOP OF BANK

BETWEEN FCA SCREEN OUTLET AND

FLUME; STEM/BASE CUT SHALL NOT

EXCEED 0.5' ABOVE EXISTING GROUNDPRESERVE EXISTING WOOD

STRUCTURE IN PLACE

PRESERVE EXISTING

CULVERT IN PLACE

HEADGATE

(TYP. OF 2)

HEADWALLS

oo o o o o o o o o o o o o o o o o o o o o o o o o o

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x x xx x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x

O E

CP2

CP1

CP3

ST C

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ACEWAY ASSOC IN

ZIM

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STATE O

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ARCO

ENVIR

ONMENTAL

REMEDIATIO

MARK DATE DESCRIPTION BY

CHKD:

DRWN:

PROJ:

DESN:

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117-002166-24007

GARDINER DIVERSION IMPROVEMENTS PROJECT

ANACONDA, MONTANA

NATURAL RESOURCE DAMAGE PROGRAM

828 Great Northern Blvd, 3rd Floor Helena, Montana 59601

PHONE: +1 (406) 443-5210 03/26/2026

FISH RETURN

PIPES TO RIVER

GALEN

ROAD

INLET FLUME

(TYP. OF 3)

GAR

DIN

FILL EXISTING SECTION OF DITCH AND REROUTE

FROM SCREEN OUTLETS TO EXISTING DITCH

8' PARSHALL FLUME

DOWNSTREAM

LOG GRATE

SEDIMENT SLUICE

WITH GATES

WARM SPRINGS CREEK

ROCK RAMP

NEW CONCRETE WALL

(TYP.)

UPSTREAM BURIED

ROCK ANCHOR

DOWNSTREAM BURIED

ROCK ANCHOR

ROCK RAMP CREST

SLUICEWAY

WALKWAY WITH GUARDRAIL

SCALE:

10' 20' 40'

1'' = 20'

MODULAR FCA SCREEN

(TYP. OF 3)

MDT CLASS 2

ROCK RIPRAP

(TYP.)

C-2

DIVERSION & INTAKE

SITE PLAN

DYW

DYW/KMH

MDB

COFFER DAM (TYP.)

TEMPORARY BYPASS CHANNEL,

CONTOURS NOT SHOWN FOR CLARITY,

SEE SHEET C-3

APPROXIMATE

EARTHWORK

EXTENTS (TYP.)

NOTES:

1. FCA SCREENS ARE OWNER-PROVIDED AND SHOWN FOR REFERENCE. SEE SHOP DRAWINGS FOR DETAILED

DIMENSIONS, ASSEMBLY, AND PLACEMENT DETAILS.

2. EXISTING CONCRETE STRUCTURES SHALL BE PRESERVED IN PLACE UNLESS THEY DIRECTLY CONFLICT WITH NEW STRUCTURES. ONLY A PORTION OF THE BURIED CONCRETE CURB THAT SPANS THE CHANNEL

REQUIRES REMOVAL.

3. REMOVE AND REPLACE ALL EXISTING FENCE AT LOCATIONS THAT CONFLICT WITH SITE ACCESS, TEMPORARY, OR PERMANENT PROJECT FEATURES. DESIGN PLANS MAY NOT SHOW ALL EXISTING FENCES.

OUTLET HEADWALL

INLET HEADWALL

50.0'

FISH SCREEN

30.0'

INLET FLUME

MDT CLASS 1

ROCK RIPRAP

(TYP.)

BOULDER FISH

RESTING (BFR)

HABITAT

EXISTING MEMORIAL,

NO DISTURBANCE WITHIN 15'

CONSTRUCTION

ACCESS ROUTE

(TYP.)

STAGING AREA

FILL FLAT WITH ONSITE

NATIVE MATERIALS TO

EL = 5102.00 ± 0.5'

DEWATERING DISCHARGE AREA

HEADGATE

(TYP. OF 2)

WALKWAY

(TYP.)

51005100 o o o o o o o o o o o o o o o o o o o o o o o o o o o

0+00

1+00

2+00

3+00 3+15.56

DEPTH VARIES

8.0' BOTTOM WIDTH

(MIN.)

MARK DATE DESCRIPTION BY

CHKD:

DRWN:

PROJ:

DESN:

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6/ 8/

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\A C

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C op yr ig ht : T et ra

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117-002166-24007

GARDINER DIVERSION IMPROVEMENTS PROJECT

ANACONDA, MONTANA

NATURAL RESOURCE DAMAGE PROGRAM

828 Great Northern Blvd, 3rd Floor Helena, Montana 59601

PHONE: +1 (406) 443-5210 03/26/2026

GALEN

ROAD

WARM SPRINGS CREEK

SCALE:

10' 20' 40'

1'' = 20'

C-3TEMPORARY BYPASS PLAN

DYW

DYW/KMH

MDB

UPSTREAM INVERT

ELEV. = 5099.00 DOWNSTREAM INVERT

ELEV. = 5096.00

COFFER DAM

MINIMUM TOP

ELEV. = 5102.50

COFFER DAM

MINIMUM TOP

ELEV. = 5098.00

TEMPORARY BYPASS CHANNEL,

SEE TYPICAL SECTION

TYPICAL TEMPORARY BYPASS SECTION

NOT TO SCALE

TYP. SIDE SLOPE (H:V)

EXISTING GROUND

(TYP.)

APPROXIMATE

EARTHWORK

EXTENTS (TYP.)

STAGING AREA

ZIM

MERMAN LO

N STATE O

F M

ONTANA

ST C

REEK R

ACEWAY ASSOC IN

EXISTING MEMORIAL,

NO DISTURBANCE

ALLOWED WITHIN 15'

EXISTING CULVERT AND

CONCRETE HEADWALL

(DO NOT DISTURB)

DEWATERING DISCHARGE AREA

STOCKPILE EXCAVATED MATERIALS FROM

TEMPORARY BYPASS CHANNEL ON SOUTH SIDE

FOR USE IN RECLAMATION OF CHANNEL

E E

x x x x x x x x x x x x

CP2

CP3

+2 00

+3 00

+4 00

+5 00 ooo o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o

985099

2+30 2+50 3+00 3+50 4+00 4+40

5.0%

MARK DATE DESCRIPTION BY

CHKD:

DRWN:

PROJ:

DESN:

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117-002166-24007

GARDINER DIVERSION IMPROVEMENTS PROJECT

ANACONDA, MONTANA

NATURAL RESOURCE DAMAGE PROGRAM

828 Great Northern Blvd, 3rd Floor Helena, Montana 59601

PHONE: +1 (406) 443-5210 03/26/2026

GARDINER DITCH

LOG GRATE

SEDIMENT SLUICES

WITH GATES

WARM SPRINGS CREEK

NEW CONCRETE WALL

(TYP.)

UPSTREAM BURIED

ROCK ANCHOR

DOWNSTREAM BURIED

ROCK ANCHOR

ROCK RAMP CREST

SLUICEWAY

SCALE:

5' 10' 20'

1'' = 10'

MDT CLASS 2

ROCK RIPRAP

(TYP.)

C-4

ROCK RAMP

PLAN & PROFILE

DYW

DYW/KMH

MDB

ROCK RAMP THALWEG PROFILE

SCALE: HORIZ: 1" = 10', VERT: 1" = 5'

A C-7

B C-7

FISH RETURN

PIPE OUTLETS,

IE= 5098.50

EXISTING

GROUND

(TYP.)

FINISH

GRADE

(TYP.)

DOWNSTREAM

BURIED ROCK

ANCHOR

UPSTREAM

BURIED ROCK

ANCHOR

ROCK RAMP CREST

EL = 5100.50

3.0' MIN. THICKNESS

TOP OF DOWNSTREAM

BURIED ROCK ANCHOR

EL = 5097.00

TOP OF RETAINING

WALL BEYOND

B C-7

C C-7

A C-7

EXISTING CONCRETE

CURB ≈ 5098.30

EXISTING CONCRETE

FOOTING DESIGN

UNKNOWN

FISH RETURN PIPES TO RIVER

PLACE BURIED CUTOFF LINER AND BEDDING MATERIAL

FROM ELEVATION 5095.00 TO 0.25'-0.5' BELOW CREST

AT MAXIMUM 2:1 (H:V) SLOPE

BFR HABITAT

(SINGULAR, TYP.)

BFR HABITAT

(CLUSTER, TYP.)

E C-7

UPSTREAM ANCHOR

MAXIMUM BOTTOM

ELEVATIONS DOWNSTREAM ANCHOR

MAXIMUM BOTTOM ELEVATIONS

D C-7

C C-7

MEMORIAL,

NO DISTURBANCE

ALLOWED WITHIN 15'

TRANSITION TO EXISTING WSC CHANNEL WITH

ONSITE NATIVE MATERIALS OVER MINIMUM 30 LF

WITH 5% MAXIMUM SLOPE IN ANY DIRECTION

TRANSITION TO EXISTING WSC CHANNEL WITH

ONSITE NATIVE MATERIALS OVER MINIMUM 30 LF

WITH 5% MAXIMUM SLOPE IN ANY DIRECTION

WSC ROCK RIPRAP TYPICAL DETAIL

NOT TO SCALE

MINIMUM TOP OF ROCK

UPSTREAM DIVERSION CREST = 5104.00

DOWNSTREAM DIVERSION CREST = 5103.00

MDT CLASS 2 ROCK RIPRAP

MIN. 2' THICKNESS

EXISTING

GROUND

MINIMUM TOE DEPTH

BELOW EXISTING GROUND

UPSTREAM = 4.0'

DOWNSTREAM = 5.0'

40 CFS

Q1.5

Q100

100 CFS

Q1.5

Q100

CP3

ooooo o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o

01 5102

51015102

509550965097

5095 5096

5.0%

BFR_S1

BFR_C1

BFR_S2

BFR_C2

BFR_S3

BFR_C3

MARK DATE DESCRIPTION BY

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C op yr ig ht : T et ra

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117-002166-24007

GARDINER DIVERSION IMPROVEMENTS PROJECT

ANACONDA, MONTANA

NATURAL RESOURCE DAMAGE PROGRAM

828 Great Northern Blvd, 3rd Floor Helena, Montana 59601

PHONE: +1 (406) 443-5210

03/26/2026

UPSTREAM BURIED

ROCK ANCHOR

DOWNSTREAM BURIED

ROCK ANCHOR

SLUICEWAY

SCALE:

2.5' 5' 10'

1'' = 5'

MDT CLASS 2

ROCK RIPRAP

(TYP.)

C-5

ROCK RAMP

GRADING PLAN

DYW

DYW/KMH

MDB

A C-7

B C-7 C

C-7

7.5'

5.0'

12.5'

7.5'

5.0'

7.5'

4.5'

4.0' WIDE ROCK

RAMP CREST

BFR HABITAT

(SINGULAR, TYP.)

BFR HABITAT

(CLUSTER, TYP.)

NOTES:

1. ALL ROCK HATCH SHOWN EXPOSED ON THIS SHEET TO DEPICT WHERE DIFFERENT ROCK

TYPES ARE LOCATED PRIOR TO BACKFILL

E C-7

D C-7

MDT CLASS 1 ROCK RIPRAP

(TYP.)

BURIED RIPRAP TOE

2+30 2+50 3+00 3+50 4+00 4+40

2.0' MIN. THICKNESS

+3 00

+4 00

+4 50 ooo o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o

E E

x x x x x x x x x x x x

CP2

CP3

MARK DATE DESCRIPTION BY

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Bar measures 1 inch, otherwise drawing not to scale

C op yr ig ht : T et ra

T ec h

117-002166-24007

GARDINER DIVERSION IMPROVEMENTS PROJECT

ANACONDA, MONTANA

NATURAL RESOURCE DAMAGE PROGRAM

828 Great Northern Blvd, 3rd Floor Helena, Montana 59601

PHONE: +1 (406) 443-5210

03/26/2026

C-6SLUICEWAY PLAN & PROFILE

DYW

DYW/KMH

MDB

SLUICEWAY PROFILE

SCALE: HORIZ: 1" = 10', VERT: 1" = 5'

GARDINER DITCH

LOG GRATE

SEDIMENT SLUICE

WITH GATES

WARM SPRINGS CREEK

NEW CONCRETE WALL

(TYP.)

UPSTREAM BURIED

ROCK ANCHOR

DOWNSTREAM BURIED

ROCK ANCHOR

SLUICEWAY

WALKWAY WITH GUARDRAIL

SCALE:

5' 10' 20'

1'' = 10'

MDT CLASS 2

ROCK RIPRAP

(TYP.)

A C-7

B C-7

C C-7 D

C-7

EXISTING GROUND

(TYP.)

FISH RETURN

PIPE OUTLET

(TYP. OF 3)

TOP OF SLAB = 5098.00

MDT CLASS 2

ROCK RIPRAP

(TYP.)

7.0' - 9.0'

BOTTOM WIDTH

D C-7

C C-7

A C-7

B C-7

EXISTING CONCRETE

CURB ≈ 5098.30

EXISTING CONCRETE

FOOTING DESIGN

UNKNOWN

E C-7

DOWNSTREAM BURIED

ROCK ANCHOR

SLUICEWAY OUTLET

IE = 5097.00

MEMORIAL,

NO DISTURBANCE

ALLOWED WITHIN 15'

ENSURE NO ROCKS PROTRUDE

ABOVE TOP OF SLAB

TRANSITION TO EXISTING WSC CHANNEL WITH

ONSITE NATIVE MATERIALS OVER MINIMUM 30 LF

WITH 5% MAXIMUM SLOPE IN ANY DIRECTION

TRANSITION TO EXISTING WSC CHANNEL WITH

ONSITE NATIVE MATERIALS OVER MINIMUM 30 LF

WITH 5% MAXIMUM SLOPE IN ANY DIRECTION

FISH RETURN

PIPES TO RIVER

0+00 0+50 0+80

MARK DATE DESCRIPTION BY

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Bar measures 1 inch, otherwise drawing not to scale

C op yr ig ht : T et ra

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117-002166-24007

GARDINER DIVERSION IMPROVEMENTS PROJECT

ANACONDA, MONTANA

NATURAL RESOURCE DAMAGE PROGRAM

828 Great Northern Blvd, 3rd Floor Helena, Montana 59601

PHONE: +1 (406) 443-5210

03/26/2026

C-7

ROCK RAMP & SLUICEWAY

SECTIONS

DYW

DYW/KMH

MDB

SECTIOND

C-4,5,6 SCALE: HORIZ: 1" = 8', VERT: 1" = 4'

SECTIONE

C-4,5,6 SCALE: HORIZ: 1" = 8', VERT: 1" = 4'

EXISTING DITCH

INTAKE STRUCTURE

IE = 5098.50

EXISTING RETAINING

WALL BEYOND

EXISTING CONCRETE

FOOTING DESIGN

UNKNOWN

WALKWAY (TYP.)

SLUICE GATES

SLUICE CHANNEL

INTAKE STRUCTURE

IE = 5098.00

ROCK RAMP CREST

EL = 5100.50

5.0' 5.0'5.0'

3.0'

(TYP.)

TOW = 5104.00 EXISTING

TOW = 5104.00

1.5'

(TYP.)

RETAINING WALL

3.0'

(TYP.)

EXISTING

GROUND

(TYP.)

EXISTING

GROUND

(TYP.)

FINISH

GRADE

(TYP.)

EXISTING

GROUND

(TYP.)

FINISH

GRADE

(TYP.)

RIPRAP BANK MAX

SIDE SLOPE 2:1 (H:V)

3.0'3.0'

FINISH

GRADE

(TYP.)

EXISTING

CONCRETE CURB

7.5'7.5'

APPROXIMATE

EXTENTS OF EXISTING

CONCRETE REMOVAL

SLUICE

CHANNEL

RIPRAP BANK MAX

SIDE SLOPE 2:1 (H:V)

7.0' - 9.0'.

(TYP.)

5.0'5.0' 12.5'7.5'

1.5'

(TYP.)

5.0'5.0' 12.5'

1.5'

(TYP.)

SLUICE

CHANNEL

TOP OF DOWNSTREAM

BURIED ROCK ANCHOR

EL = 5097.00

TOP OF DOWNSTREAM

BURIED ROCK ANCHOR

EL = 5097.00

EXISTING

GROUND

(TYP.)

FINISH

GRADE

(TYP.)

RIPRAP BANK MAX

SIDE SLOPE 2:1 (H:V)

SLUICE

CHANNEL

EXISTING

GROUND

(TYP.)

FINISH

GRADE

(TYP.)

BACKFILL WITH

ONSITE NATIVE

MATERIAL

DOWNSTREAM ANCHOR

MAXIMUM BOTTOM ELEVATIONS

RIPRAP BANK MAX

SIDE SLOPE 2:1 (H:V)

RIPRAP BANK TOE

SECTIONA

C-4,5,6 SCALE: HORIZ: 1" = 8', VERT: 1" = 4'

SECTIONB

C-4,5,6 SCALE: HORIZ: 1" = 8', VERT: 1" = 4'

SECTIONC

C-4,5,6 SCALE: HORIZ: 1" = 8', VERT: 1" = 4'

BFR HABITAT

(CLUSTER)

BFR HABITAT

(SINGULAR)

HEAD GATES

+ 0

+ 1 ooo o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o

+3 00

+4 00

x x x x x x x x x x x x x x x x x x x x x x x

CP2

2+50 3+00 3+50 4+00 4+50 5+00 5+50

F C-9

MARK DATE DESCRIPTION BY

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C op yr ig ht : T et ra

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117-002166-24007

GARDINER DIVERSION IMPROVEMENTS PROJECT

ANACONDA, MONTANA

NATURAL RESOURCE DAMAGE PROGRAM

828 Great Northern Blvd, 3rd Floor Helena, Montana 59601

PHONE: +1 (406) 443-5210

03/26/2026

SCALE:

5' 10' 20'

1'' = 10'

C-8FCA SCREEN PLAN & PROFILE

DYW

DYW/KMH

MDB

FCA SCREEN PROFILE

SCALE: HORIZ: 1" = 10', VERT: 1" = 2.5'

INTAKE STRUCTURE

IE =5098.50

60 CFS

100 CFS

FISH SCREEN

EL= 5099.40

(TYP. OF 3)

FLUME

EL= 5099.40

(TYP. OF 3)

MODULAR FCA SCREENS

(x3 IN PARALLEL)

FINISH

GRADE

(TYP.)

EXISTING

GROUND

(TYP.)

ROCK RAMP CREST

FOR REFERENCE

SCREEN INLET

HEADWALL

H C-9

SCREEN OUTLET

HEADWALL

GARDINER DITCH

FISH RETURN PIPES

HEADGATE

(x2)

10.0' MIN.

F C-9

G C-9

H C-9

THREE MODULAR FCA SCREENS

G C-9

MDT CLASS 1

ROCK RIPRAP

(TYP.)

50.0'

FISH SCREEN

30.0'

INLET FLUME

30.0'

INLET FLUME

50.0'

FISH SCREEN

GALEN

ROAD

67 CFS67 CFS

10.0' MIN.

1.0% SLOPE

TOP OF RIPRAP SHALL BE

BETWEEN 0.1' AND 0.2'

BELOW ADJACENT SLAB

TOP OF RIPRAP = 5098.90 ± 0.25'

10' MIN.

ALIGNED WITH

INLET FLUMES

10' MIN.

ROCK RIPRAP

OUTLET ARMOR TO

EL 5100.00 MIN.

ROCK RIPRAP

ARMOR TO

EL 5103.00 MIN.

DITCH SECTION AND ELEVATIONS

SHALL TRANSITION SMOOTHLY

FROM INTAKE TO INLET FLUMES

2:1 (H:V) TYPICAL

SIDE SLOPES

SHAPE SMOOTH

TRANSITION TO

EXISTING DITCH

OVER MIN. 20 LF

MATCH DITCH BOTTOM WIDTH TO TOTAL

FISH SCREEN OUTLET WIDTH AND

TRANSITION SMOOTHLY TO DESIGN

BOTTOM WIDTH OVER MIN. 30 LF

10.0' - 12.0'

BOTTOM WIDTH

FCA FABRICATED

FISH RETURN FLUMES

PIPE SUPPORT LOCATED TO SUPPORT

FISH RETURN PIPE 1 AND 2,

SEE DETAIL ON SHEET C-9

MATCH

EXISTING

GROUND

TOP OF RIPRAP = 5097.00 ± 0.25'

HEADGATE

(TYP. OF 2)

HEADGATE

(TYP. OF 2)

WALKWAY SPANNING

FCA INLET FLUMES

(TYP. OF 3)

SCREEN INLET

HEADWALL

SCREEN OUTLET

HEADWALL

0+00 0+50 0+60

10'6'-13 4"2'

2'-5"

3'-6"

38'-73 4"

0+00 0+50 0+80

10'

46'-111 4"

7'-73 4"

3'-6"

0+00 0+50 1+00 1+50 2+00

PIPE

STRAPS

FISH RETURN PIPES (#1 AND #2)

SET SUPPORT ELEVATION

TO CONTACT BOTTOM OF

FISH RETURN PIPES

L5 x 5 x 12 (TYP.)

1.0'

2.0'

0.5'

4.0'

PIPE STRAP 3" WIDE,

4" THICK BENT TO

MATCH PIPE DIAMETER

1.0' MIN. (TYP.)

CONCRETE (TYP.)

MARK DATE DESCRIPTION BY

CHKD:

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T ec h

117-002166-24007

GARDINER DIVERSION IMPROVEMENTS PROJECT

ANACONDA, MONTANA

NATURAL RESOURCE DAMAGE PROGRAM

828 Great Northern Blvd, 3rd Floor Helena, Montana 59601

PHONE: +1 (406) 443-5210 03/26/2026

SCALE:

5' 10' 20'

1'' = 10'

M S

CREE

C-9

FCA SCREEN & FISH RETURN PIPE

SECTIONS

DYW

DYW/KMH

MDB

FCA INLET FLUME SECTIONF

C-8,9 SCALE: HORIZ: 1" = 10', VERT: 1" = 2.5'

FCA SCREEN SECTIONG

C-8,9 SCALE: HORIZ: 1" = 10', VERT: 1" = 2.5'

FINISH

GRADE

(TYP.)

EXISTING

GROUND

(TYP.)

INLET FLUMES

(TYP. OF 3)

FINISH

GRADE

(TYP.)

EXISTING

GROUND

(TYP.)

FISH RETURN PIPES SECTIONH

C-8,9 SCALE: HORIZ: 1" = 10', VERT: 1" = 2.5'

40 CFS

Q1.5

Q100

FINISH

GRADE

(TYP.)

FILL EXISTING

SECTION OF DITCH

FISH RETURN PIPE OUTLET

IE = 5098.50

(TYP. OF 3)

FISH RETURN

PIPE INLET

IE = 5098.90

(TYP. OF 3) EXISTING

GROUND

(TYP.)

WARM SPRINGS

CREEK

RIPRAP BANK

MAX SIDE SLOPE

2:1 (H:V)

14" Ø PVC PIPES

(TYP. OF 3)

MDT CLASS 1 ROCK

RIPRAP OUTLET ARMOR

FISH SCREEN

EL = 5099.40

(TYP.)

FISH RETURN PIPE #1 = 80 LF

GARDINER DITCH

FISH RETURN PIPE OUTLET

(TYP. OF 3)

FISH RETURN

PIPE INLET

(TYP. OF 3)

MDT CLASS 1

ROCK RIPRAP

(TYP.)

SCREEN OUTLET

HEADWALL

MDT CLASS 2

ROCK RIPRAP

(TYP.)

FILL EXISTING SECTION OF DITCH

AND REROUTE FROM SCREEN

OUTLETS TO EXISTING DITCH

INLET FLUME

(TYP. OF 3)

FISH SCREEN

(TYP. OF 3)

2.0' MIN COVER

FISH RETURN PIPE #2 = 75 LF

FISH RETURN PIPE #3 = 65 LF

SCREEN INLET

HEADWALL

PIPE SUPPORT DETAIL

SCALE: 1" = 2'

1.0' MIN. IN ALL DIRECTIONS (TYP.)

NOTES:

1. WELD ALL CONTACT POINTS, EDGES, ETC. WITH 14" CONTINUOUS WELDS.

2. BOLT PIPE STRAPS TO ANGLES WITH 14" BOLTS.

3. LOCATE PIPE SUPPORT PERPENDICULAR TO PIPES AND 1.0' FROM THE END OF FISH RETURN PIPE #2

PIPE SUPPORT,

SEE DETAIL ON THIS SHEET

SCREEN

OUTLET

HEADWALL

FISH SCREEN

(TYP. OF 3)

ROCK RIPRAP

OUTLET ARMOR

MIN. TOP EL. = 5100.00

SCREEN

INLET

HEADWALL

HEAD GATE

(TYP. OF 2) WALKWAY SPANNING

FCA INLET FLUMES

(TYP. OF 3)

PIPE SUPPORT LOCATED TO

SUPPORT FISH RETURN PIPE 1 AND 2,

SEE DETAIL ON THIS SHEET

NOTES:

1. SEE FCA SHOP DRAWINGS AND INSTALLATION INSTRUCTIONS FOR MORE INFORMATION.

+8 00

FOFOFOFOFOFO

x x x x x x x x x x x x x x x x x xx x x x x x x xxxxxxxxxx

51005100

7+40 7+50 8+00 8+40

0+000+501+001+502+00

+0 00

+1 00

+2 00

E E

x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x

510051

MARK DATE DESCRIPTION BY

CHKD:

DRWN:

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Bar measures 1 inch, otherwise drawing not to scale

C op yr ig ht : T et ra

T ec h

117-002166-24007

GARDINER DIVERSION IMPROVEMENTS PROJECT

ANACONDA, MONTANA

NATURAL RESOURCE DAMAGE PROGRAM

828 Great Northern Blvd, 3rd Floor Helena, Montana 59601

PHONE: +1 (406) 443-5210

03/26/2026

SCALE:

5' 10' 20'

1'' = 10'

GALEN

ROAD

EXISTING BRIDGE

PRE-FABRICATED 8' PARSHALL FLUME

SET THROAT ELEV. = 5095.80

60 CFS

PRE-FABRICATED

8' PARSHALL FLUME

EXISTING BRIDGE

60 CFS

FLUME PROFILE

SCALE: HORIZ: 1" = 10', VERT: 1" = 2.5'

GARDINER DITCH

WING WALLS,

SEE DETAIL ON

SHEET D-1

8.0'

WING WALLS (x2)

C-10FLUME PLAN & PROFILE

DYW

DYW/KMH

MDB

EXISTING

GROUND

(TYP.)

FINISH

GRADE

(TYP.)

10.0' MIN.

MDT CLASS 1 ROCK

RIPRAP OUTLET ARMOR,

MATCH EXISTING DITCH

BOTTOM IE AND WIDTH

1.0' MIN. (TYP.)

MDT CLASS 1 ROCK

RIPRAP OUTLET ARMOR,

MATCH EXISTING DITCH

BOTTOM IE AND WIDTH

10.0'

MIN

SCALE:

5' 10' 20'

1'' = 10'

EXISTING

GROUND

(TYP.)

PRE-FABRICATED

8' PARSHALL FLUME

WING WALLS BEYOND,

SEE DETAIL ON SHEET D-1

FLUME SECTION

SCALE: HORIZ: 1" = 10', VERT: 1" = 2.5'

GALEN

ROAD

GALEN

ROAD

EXISTING BRIDGE

MDT CLASS 1 ROCK

RIPRAP OUTLET ARMOR

PRE-FABRICATED

8' PARSHALL FLUME

WING WALLS (x2)

APPROXIMATE EARTHWORK EXTENTS FOR

TEMPORARY CONSTRUCTION ACCESS ROAD

APPROXIMATE EARTHWORK EXTENTS FOR

TEMPORARY CONSTRUCTION ACCESS ROAD

EXISTING FENCE (TYP.)

MDT CLASS 1 ROCK

RIPRAP OUTLET ARMOR

BEYOND

MIN. ELEVATION = 5098.00

ROCK RIPRAP OUTLET

ARMOR BEYOND

MIN. TOP EL. = 5098.00

MIN. ELEVATION = 5098.00

EXISTING FENCE (TYP.)

TOP OR RIPRAP = 5095.00 ± 0.25'

BFR FOOTER ROCK SHALL HAVE MINIMUM DIMENSION GREATER THAN 2.0'

ROCK RAMP DESIGN SURFACE

BFR FOOTER ROCK SHALL HAVE MINIMUM DIMENSION GREATER THAN 2.0'

PLACE IN CONTACT WITH BFR ROCK AND WITH TOP OF FOOTER ROCK

0.0' - 0.25' BELOW ROCK RAMP DESIGN SURFACE

BFR CONTROL POINT

SEE TABLE AND DIVERSION PLANS

ROCK RAMP MATERIALS (TYP.)

BOULDER FISH RESTING (BFR) HABITAT

NTS2

NOTES:

1. MINIMUM BFR ROCK DIMENSION SHALL BE SHORTEST DISTANCE MEASURED IN ANY DIRECTION.

2. BFR FOOTER ROCKS MAY BE SELECTED FROM TYPICAL ROCK RAMP MATERIALS.

MINIMUM BFR ROCK DIMENSION = 4.0'

1.0' - 1.5' PROTRUSION ON DOWNSTREAM FACE

3.0' MINIMUM EMBEDMENT ON DOWNSTREAM FACE

BEDDING MATERIAL MINIMUM 3" THICKNESS

BETWEEN LINER AND ROCKS

ROCK RAMP OR WEIR MATERIALS (TYP.)

CUTOFF LINER

ROCK RAMP OR WEIR MATERIALS (TYP.)

DOWNSTREAMUPSTREAM

NOTES:

1. SEE DIVERSION PLANS FOR ELEVATIONS, SLOPES, AND OTHER DIMENSIONS.

BURIED CUTOFF LINER SECTION

NTS1

DIVERSION CREST LENGTH

SEE DIVERSION PLANS

TOP OF LINER LOCATED AT CENTER OF CREST LENGTH ±1.0'

AND BELOW CREST ELEVATION

ROCK RAMP MATERIALS (TYP.)

0.0' - 0.5' SPACE

BFR CONTROL POINT SEE

TABLE AND DIVERSION PLANS

BFR FOOTER ROCK BURIED (TYP.)

1.0' SPACE MINIMUM

0.0' - 0.5' SPACE

CLUSTER BFR HABITAT

NTS3

NOTES:

1. BFR ROCK AND FOOTER ROCK REQUIREMENTS MATCH SINGLE BFR: DETAIL.

2. CLUSTER ORIENTATION MAY VARY AS DIRECTED BY ENGINEER.

FLUME WINGWALL DETAIL

SCALE: 1" = 3'4

UPSTREAM WING WALL

5'-0"

20'-0"

3'-0"

11'-13 4"

4'-51 8"

DOWNSTREAM WING WALL

5'-6"

9'-0"

3'-3"

5'-0"

20'-0"

D-1DETAILS

DYW

KMH

MDB

BFR POINT TABLE

PT#

DESCRIPTION

BFR_S1

BFR_C1

BFR_S2

BFR_C2

BFR_S3

BFR_C3

MIN. TOP ELEVATION

5101.000

5100.000

5099.000

NORTHING

706761.1146

706755.0242

706765.9076

706758.3600

706768.9830

706761.4631

EASTING

1109142.4149

1109152.9092

1109160.3759

1109171.7794

1109180.1380

1109191.4286

MARK DATE DESCRIPTION BY

CHKD:

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2 3 4 5 6 7

Bar measures 1 inch, otherwise drawing not to scale

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T ec h

117-002166-24007

GARDINER DIVERSION IMPROVEMENTS PROJECT

ANACONDA, MONTANA

NATURAL RESOURCE DAMAGE PROGRAM

828 Great Northern Blvd, 3rd Floor Helena, Montana 59601

PHONE: +1 (406) 443-5210 03/26/2026

FLOW

NOTES:

1. CONTRACTOR SHALL FIELD VERIFY WING WALL DIMENSIONS

AND ENSURE NO ENCROACHMENT INTO FLUME INTERIOR.

CONTRACTOR SHALL PROVIDE SEALED, FULL-CONTACT FIT. .

MARK DATE DESCRIPTION BY

CHKD:

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P M

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S\ D

C \A

C C

D O

C S\

C H

O J\

\S H

\D _G

D W

S, D

2 3 4 5 6 7

Bar measures 1 inch, otherwise drawing not to scale

C op yr ig ht : T et ra

T ec h

117-002166-24007

GARDINER DIVERSION IMPROVEMENTS PROJECT

ANACONDA, MONTANA

NATURAL RESOURCE DAMAGE PROGRAM

828 Great Northern Blvd, 3rd Floor Helena, Montana 59601

PHONE: +1 (406) 443-5210

03/26/2026

D-2HEADGATE REPLACEMENT

DYW

DYW/KMH

MDB

9.0'

5.5'

1'-0"0'-6" 3.5' 3.5'

2.0'

1.0'

NEW WALL SHALL BE FLUSH WITH EXISTING TOP OF WALL

EXISTING TOW EL = 5104.00

FULL HEIGHT DOWELS IN NEW WALL BETWEEN

EXISTING CONCRETE WALLS AND OPENINGS

REBAR SHALL BE INSTALLED

TO ALLOW 3" CLEAR SPACE

AROUND OPENINGS (TYP.)

0'-6"

EXISTING CONCRETE

FOOTING DESIGN UNKNOWN

EXISTING CONCRETE

FOOTING DESIGN UNKNOWN

ATTACH NEW WALL TO

EXISTING PER

STRUCTURAL NOTES

NEW WALL FACE

FLUSH WITH EXISTING

INTAKE STRUCTURE

GATE INVERT FLUSH

WITH EXISTING

CONCRETE SLAB

#5 @ 12" O.C. HORIZONTAL

AND FULL HEIGHT DOWELS

EACH FACE

OPENINGS FLUSH WITH

EXISTING SLAB TOF

REINFORCE OPENINGS IN

NEW WALL PER DETAIL

HEADGATE SECTION

SCALE: 1" = 1'

HEADGATE PROFILE

SCALE: 1" = 1'

3.5'

GENERAL STRUCTURAL NOTES

RD. - ROUND

SCHED.

TYP.

G.W. - GROUND WATER

- HEADED ANCHOR STUD

- INTERNATIONAL CONFERENCE

OF BUILDING OFFICIALS

- HOLLOW CLAY MASONRY

I.D. - INSIDE DIAMETER

INSUL.

INT

I.F.

INV

- INSULATED

- INTERIOR

- INVERT

- INSIDE FACE

I.C.B.O.

HT.

H.P.

HORIZ.

H.A.S.

H.C.M.

HK.

- HEIGHT

- HIGH POINT

- HORIZONTAL

- HOOK

WT.

W.P.

W.L.

WWF

W.I.

W W/

WD.

W/O

VERT.

U.B.C.

U.N.O.

E.F. - EACH FACE

- FLOOR DRAIN (SEE ARCH.)

- GLUE LAMINATED BEAM

- FLOOR OPENING

GA.

GR.

GALV.

G.L.B.

G.L.

GND

F.O.

F.S.

FTG

FLR

- GAUGE

- GROUND

- GRADE

- GALVANIZED

- GROUND LINE

- FAR SIDE

- FOOTING

- FLOOR

E.W.

FIN.

FLG

FDN

EXP

EXT

ELEV.

EXIST

EXC

- EACH WAY

- FINISH

- FLANGE

- FOUNDATION

- EXPOSED

- EXTERIOR

- ELEVATION

- EXCAVATION

- EXISTING

TMBR.

T.O.W.

TR.

T(TL)

T(TB)

T.O.D.

T.O.S.

T.O.SL.

T.O.F.

T.O.C.

T&B

THD

THK

TJI

S.Y.

SYM.

STR.

- CONCRETE WALL INTERSECTION

DIA.

DWL

EA.

D.O.

DIM.

DRWG

DTL

DIAG.

- DOWEL

- EAST

- EACH

- DOOR OPENING

- DIMENSION

- DRAWING

- DETAIL

- DIAMETER

- DIAGONAL

D.I.

C.W.I C.Y.

CRS

CSK

CTRD

CTR

CONTR

COORD.

- DIAMETER

- DEGREE

- CUBIC YARD

- DUCTILE IRON

- COURSES

- CENTER

- CENTERED

- COUNTERSINK

- CONTRACTOR

- COORDINATE

SQ.

STL.

S.S.

SHT.

STIRR.

STIFF.

SPA.

S.I.

SIM.

SPECS.

S.L.V.

SHTG.

SHT.

SGT.

S.F.

RT.

RM.

REQ'D

REBAR

REINF.

- TYPICAL

- WORKING POINT

- WORKING LINE

- WELDED WIRE FABRIC

- WROUGHT IRON

- WEIGHT

- UNIFORM BUILDING CODE

- UNLESS NOTED OTHERWISE

- VERTICAL

- WEST

- WITH

- WITHOUT

- WOOD

- TIMBER

- TOP OF STEEL

- TOP OF SLAB

- TOP OF WALL

- TOP OF FOOTING

- TOP OF SLAB

- TOP OF CONCRETE

- TOP OF DECK/SHEATHING

(REBAR TOP LAYER)

(REBAR BOTTOM LAYER)

- TRUSS

- SQUARE YARD

- TOP AND BOTTOM

- TREAD OR TON

- THREAD

- THICK

- TRUSS JOIST

- SYMMETRICAL

- STRAIGHT

- SPECIFICATIONS

- STAINLESS STEEL

- SQUARE INCHES

- SHORT LEG VERTICAL

- SQUARE

- SHEET

- STIRRUP

- STEEL

- STIFFENER

- SPACES

- SIMILAR

- SHEATHING

- SQUARE FEET

- REINFORCING STEEL

- STRUCTURAL GLAZED TILE

- SOUTH

- SHEET

- SCHEDULE

- REINFORCING

- REQUIRED

- RIGHT

- ROOM

A.I.S.C. - AMERICAN INSTITUTE OF

B(BL) - BOTTOM OF SLAB

- CAST IN PLACE CONCRETE

- CONCRETE CONTROL JOINT

- CONCRETE EXPANSION JOINT

- CONCRETE CONSTRUCTION JOINT

(REBAR BOTTOM LAYER)

- CENTER TO CENTER

- CAST IRON PIPE

- CHECKERED FLOOR PLATE

- CORRUGATED METAL PIPE

- CONCRETE MASONRY UNIT

- CONTINUOUS OR CONTINUED

CIJ - CONCRETE ISOLATION JOINT

C.M.U.

CONC.

CONN

CONT.

COL.

CONSTR

C.M.P.

CLG.

CLR

CH.FL.PL.

- CONCRETE

- COLUMN

- CONNECTION

- CONSTRUCTION

- CEILING

- CLEAR

- CENTER LINE

C.I.

C-I-P C.I.P.

CCJ

CRJ

CEJ

B.U

C.F.

C/C

- CAST IRON

- BUILT-UP

- CUBIC FEET

PSF

P.T.

PSI

RAD.

PL.

PERP.

PLYWD

PCS.

P.J.F.

O.F.

OPNG

O.W.J.

O/O

OPP.

NO.

N.S.

O.C.

O.D.

N.T.S.

STEEL CONSTRUCTION

- AMERICAN NATIONAL STANDARDS

- AMERICAN WELDING SOCIETY

(REBAR TOP LAYER)

- BOTTOM OF SLAB

B.I. - BUILDING LINE

BRKT.

BSMT.

B(TL)

BTR.

BTW.

BLDG.

BLKG.

BM.

BOT.

BRG.

- BRACKET

- BASEMENT

- BATTER

- BETWEEN

- BUILDING

- BLOCKING

- BEAM

- BOTTOM

- BEARING

A.W.S.

B.B.

B.F.

A.N.S.I.

ARCH.

A.S.T.M.

- BACK TO BACK

- BOARD FEET

INSTITUTE

- ARCHITECTURAL

M.O.

MTD.

MTL.

N.I.C.

NOM.

MIN.

MK.

MECH.

MFD.

MFR.

L.P.

LT.

LVL.

M.B.

MATL.

MAX.

LAM.

LB.

L.L.H.

L.L.V.

- AMERICAN CONCRETE INSTITUTE

ABBREVIATIONS

A.C.I.

ABUT.

A.B.

- ABUTMENT

- ANCHOR BOLT

- AT JT.

JST.

KIP - 1000 POUNDS

- PERPENDICULAR

- PRESSURE TREATED

- POUNDS PER SQ. FT

- POUNDS PER SQ. INCH

- PRE-MOLDED JOINT FILLER

- RADIUS

- RISER

- PIECES

- PLATE

- PLYWOOD

- NOT TO SCALE

- OUTSIDE FACE

- OPEN WEB JOIST

- OUTSIDE DIAMETER

- OPENING

- OUT TO OUT

- OPPOSITE

- NUMBER

- NEAR SIDE

- ON CENTER

- MANUFACTURED

- MANUFACTURE

- MASONRY OPENING

- NOT IN CONTRACT

- MOUNTED

- NORTH

- NOMINAL

- METAL

- MINIMUM

- MARK

- MECHANICAL

- MACHINE BOLT

- LAMINATED VENEER LUMBER

- LONG LEG VERTICAL

- LONG LEG HORIZONTAL

- LOW POINT

- LEFT

- MATERIAL

- MAXIMUM

- POUND

- LAMINATED

- JOINT

- JOIST

- AMERICAN SOCIETY OF TESTING

MATERIALS

GENERAL STRUCTURES

1. THIS SHEET IS NOT A COMPLETE DESCRIPTION OF WORK REQUIREMENTS. CONTRACTOR SHALL ENSURE ALL

WORK MEETS REQUIREMENTS OF ALL CONTRACT DOCUMENTS.

2. BASIC DESIGN CODE: 2021 MONTANA BUILDING CODE BASED ON THE 2021 INTERNATIONAL BUILDING CODE, ASCE

7-16, ACI 318-19, AISC 360-16.

3. ALL MATERIALS, WORKMANSHIP AND DESIGN BY OTHERS SHALL CONFORM TO THE DESIGN CODES UNLESS

NOTED OTHERWISE.

4. DRAWINGS INDICATE GENERAL AND TYPICAL DETAILS OF CONSTRUCTION. WHERE CONDITIONS ARE NOT SPECIFICALLY INDICATED BUT ARE OF SIMILAR CHARACTER TO DETAILS SHOWN, SIMILAR DETAILS OF CONSTRUCTION SHALL BE USED, AND ARE SUBJECT TO REVIEW AND APPROVAL BY THE ENGINEER.

5. REPETITIVE FEATURES ARE NOT DRAWN IN THEIR ENTIRETY AND SHALL BE PROVIDED AND CONSTRUCTED

COMPLETELY AS IF DRAWN IN FULL.

6. DIMENSIONS BASED ON THESE DESIGN DRAWINGS. CONTRACTOR TO VERIFY ALL PRIOR TO FABRICATION.

STRUCTURAL STEEL

1. DETAILING, FABRICATION, AND ERECTION SHALL BE IN ACCORDANCE WITH AISC SPECIFICATIONS CONTAINED IN

THE 15TH EDITION OF THE MANUAL OF STEEL CONSTRUCTION.

2. PLATES, CHANNELS, MISC. SHAPES: ASTM A36

3. WIDE FLANGE “W” SECTIONS: ASTM A992

4. TUBE “HSS” SECTIONS: A500 GR. B

5. PIPE: A53 GR.B

6. WELDING SHALL CONFORM TO REQUIREMENTS OF AWS D1.1.

7. WELDING SHALL BE PERFORMED BY AWS CERTIFIED WELDERS.

8. WELD ELECTRODES: E70XX

9. ALL HOLES FOR BOLTS SHALL BE EQUAL TO BOLT DIAMETER PLUS 116 INCH UNLESS NOTED OTHERWISE.

10. BOLTS SHALL CONFORM TO ASTM F3125 GRADE A325 TYPE 1. HEAVY HEXAGONAL NUTS SHALL CONFORM TO

ASTM A563 GRADE DH. WASHERS SHALL CONFORM TO ASTM F436 TYPE 1.

11. UNLESS OTHERWISE NOTED, ADHESIVE ANCHORS SHALL BE THREADED ROD CONFORMING TO ASTM F1554 GRADE 36 WITH HEAVY HEXAGONAL NUTS THAT CONFORM TO ASTM A563 GRADE DH AND WASHERS THAT CONFORM TO ASTM F436 TYPE 1. ADHESIVE SHALL BE HILTI HIT-HY 200 V3 OR APPROVED EQUAL. ALL MATERIALS

SHALL BE HOT DIP GALVANIZED IN ACCORDANCE WITH ASTM F2329.

12. ALL POST-INSTALLED ANCHORS SHALL BE INSTALLED IN STRICT CONFORMANCE TO MANUFACTURER'S DIRECTIONS BY QUALIFIED PERSONNEL WHO HAVE BEEN CERTIFIED TO INSTALL THE TYPE AND ORIENTATION OF

ANCHOR. ALL HOLES SHALL BE HAMMER DRILLED WITH A CARBIDE BIT.

13. UNLESS NOTED OTHERWISE, CAST-IN-PLACE ANCHORS SHALL BE HEADED ANCHOR BOLTS CONFORMING TO ASTM F1554 GRADE 36 HEAVY HEX HEAD BOLTS WITH HEAVY HEXAGONAL NUTS THAT CONFORM TO ASTM A563 GRADE DH AND PLATE WASHERS MADE OF ASTM A36 PLATE WITH MINIMUM SIZE CONFORMING TO TABLE 14-2 OF

THE CURRENT AISC STEEL CONSTRUCTION MANUAL.

FOUNDATIONS

1. FOUNDATION DESIGN IS BASED ON THE PRESUMPTIVE LOAD-BEARING VALUES OF TABLE 1806.2 OF THE 2021

INTERNATIONAL BUILDING CODE.

(1) ALLOWABLE BEARING PRESSURE = 3000 PSF

(2) ACTIVE EARTH PRESSURE = 30 PCF

(3) ALLOWABLE LATERAL BEARING PRESSURE = 200 PCF

(4) COEFFICIENT OF FRICTION = 0.35

EXISTING CONCRETE MODIFICATIONS

GENERAL

1. THE FOLLOWING NOTES ON MODIFICATION OF EXISTING CONCRETE ARE GENERAL AND APPLY TO THE ENTIRE

PROJECT, UNLESS OTHERWISE SPECIFIED.

SURFACE

1. EXISTING CONCRETE SURFACES TO BE JOINED WITH NEW CONCRETE SHALL BE THOROUGHLY CLEANED AND ROUGHED TO MIN 1/4” AMPLITUDE AND SATURATED SURFACE DRY JUST PRIOR TO PLACEMENT OF NEW

CONCRETE.

2. NEW OPENINGS IN EXISTING CONCRETE SHALL BE NEATLY SAW CUT TO THE REQUIRED FINISHED SIZE PRIOR TO

REMOVING THE EXISTING CONCRETE.

3. EXPOSED REINFORCING BARS IN CUT SURFACE SHALL BE CUT BACK 1” BELOW CONCRETE SURFACE AND

REPAIRED WITH EPOXY GROUT.

REINFORCING STEEL

1. ALL REINFORCING STEEL SHALL CONFORM TO: ASTM A615, GRADE 60, DEFORMED BARS

2. REINFORCEMENT TO BE WELDED SHALL CONFORM TO ASTM A706.

3. FABRICATION AND PLACEMENT OF REINFORCING SHALL BE ACCORDANCE WITH CRSI “MANUAL OF STANDARD

PRACTICE” AND ACI 301 “SPECIFICATIONS FOR STRUCTURAL CONCRETE”.

4. MINIMUM CLEARANCE FOR REINFORCEMENT AT CONCRETE SURFACES, UNLESS SHOWN OTHERWISE, SHALL BE:

SURFACE EXPOSURE CLEARANCE

WHEN EXPOSED ON GROUND: 3"

EXPOSED TO WATER,WEATHER,

BACKFILL OF CONDENSATION:

#5 BAR OR SMALLER 2"

#6 BAR OR LARGER 2"

INTERIOR DAY SURFACES:

SLABS 1 12"

BEAMS (STIRRUPS) 1 12"

COLUMNS (TIES) 1 12"

WALLS 1 12"

5. ALL BENDS, UNLESS OTHERWISE SHOWN, SHALL BE STANDARD BENDS AS DEFINED IN THE LATEST EDITION OF

ACI 318.

6. WALL VERTICAL REINFORCING SHALL BE LAPPED WITH DOWELS FROM BASE SLABS OR FOOTINGS AND EXTENDED INTO THE TOP FACE OF ROOF SLABS AND LAPPED WITH TOP SLAB REINFORCEMENT. PROVIDE

VERTICAL REINFORCING AT WALL ENDS, CORNERS AND INTERSECTIONS.

7. SPLICE REINFORCING ONLY AT LOCATIONS INDICATED BY DRAWINGS, EXCEPT AS APPROVED BY ENGINEER.

8. REINFORCING DEVELOPMENT AND LAP SPLICE LENGTHS:

9. TOLERANCES IN PLACING REINFORCEMENT SHALL BE IN ACCORDANCE ACI 117.

10. UNCOATED METAL CLIPS OR SUPPORTS SHALL NOT BE PLACED IN CONTACT WITH THE FORMS OR THE SUBGRADE. CONCRETE BLOCKS OR DOBBIES SUPPORTING BARS ON SUBGRADE SHALL BE IN SUFFICIENT NUMBERS TO SUPPORT THE BARS WITHOUT SETTLEMENT, BUT IN NO CASE SHALL SUCH SUPPORT BE

CONTINUOUS.

11. DOWELS SHALL BE THE LENGTH INDICATED. DOWELS SHALL BE WIRED IN POSITION PRIOR TO POURING THE

CONCRETE.

12. UNLESS INDICATED OTHERWISE, ALL REINFORCEMENT LAP SPLICES, EMBEDMENT, AND HOOKS SHALL COMPLY WITH ACI 318. LOCATION OF SPLICES SHALL BE SHOWN ON SHOP DRAWINGS AND ARE SUBJECT TO APPROVAL OF ENGINEER. SPLICES IN ADJACENT BARS SHALL BE STAGGERED A MINIMUM OF 1 LAP SPLICE LENGTH OR AS

SHOWN ON DRAWINGS.

13. REINFORCING SHOWN IN SECTION APPLIES FOR FULL LENGTH OF WALL, GRADE BEAM OR SLAB.

CONCRETE (CAST-IN-PLACE)

1. CONCRETE CONSTRUCTION SHALL BE IN ACCORDANCE WITH ACI 318 AND ACI 301.

2. PROVIDE 34" CHAMFER AT ALL CONCRETE CORNERS W/ EDGING TOOL.

3. DRILL AND EPOXY HORIZONTAL REINFORCING INTO EXISTING CONCRETE SLAB AND WALLS AT ALL CONNECTIONS

POINTS, WITH MINIMUM 5" EMBED DEPTH.

4. LOCATION OF CONSTRUCTION JOINTS SHALL HAVE THE APPROVAL OF THE ENGINEER. CONSTRUCTION JOINTS SHALL BE DETAILED AS SHOWN ON THE DRAWINGS. UNLESS A METAL KEYED FORM IS USED, ALL CONSTRUCTION JOINTS SHALL BE ROUGHENED TO A MINIMUM 14" AMPLITUDE. ALL JOINT SURFACES SHALL BE THOROUGHLY CLEANED TO REMOVE GREASE, LOOSE CONCRETE, AND LAITANCE OR OTHER BOND REDUCING MATERIAL.

SURFACES SHALL BE SATURATED SURFACE DRY PRIOR TO PLACING FRESH CONCRETE.

5. UNLESS OTHERWISE NOTED, CONCRETE SHALL BE FINISHED TO A UNIFORM COLOR, APPEARANCE AND TEXTURE IN ACCORDANCE WITH ACI 301 SECTION 5. APPLY SURFACE FINISH SF-2.0 TO CONCRETE SURFACES NOT EXPOSED TO VIEW. APPLY SURFACE FINISH SF-2.0 FOLLOWED BY A SMOOTH-RUBBED FINISH TO CONCRETE SURFACES EXPOSED TO VIEW. APPLY A FLOAT FINISH FOLLOWED BY A LIGHT TROWEL FINISH TO ALL INTERIOR

SLABS AND LIGHT BROOM FINISH TO ALL EXTERIOR SLABS UNLESS NOTED OTHERWISE.

#10

#11

TENSION DEVELOPMENT AND SPLICE LENGTHS

BAR

SIZE

CLASS B

TENSION LAP

TOP BARS

OTHER

BARS

12 14

18 23

21 28

31 40

35 46

44 56

54 70

65 84

14 1912

STD 90° HOOK

HOOK

LENGTH BEND DIALdh

3.75

4.5

9.25

10.75

2.25

5.25

NOTES

OTHER

BARS

· FOR GRADE 60 UNCOATED BARS AND NORMAL WEIGHT

CONCRETE, f 'c = 4500 PSI. MIN COVER 2", MIN SPACING 4".

· "TOP BARS" ARE HORIZONTAL REINFORCING BARS WHERE 12"

OF FRESH CONCRETE IS CAST BELOW THE DEVELOPMENT

LENGTH OR SPLICE.

· DIMENSIONS ARE IN INCHES.12

TOP BARS

MARK DATE DESCRIPTION BY

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C op yr ig ht : T et ra

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117-002166-24007

GARDINER DIVERSION IMPROVEMENTS PROJECT

ANACONDA, MONTANA

NATURAL RESOURCE DAMAGE PROGRAM

828 Great Northern Blvd, 3rd Floor Helena, Montana 59601

PHONE: +1 (406) 443-5210 03/26/2026

S-1STRUCTURAL NOTES

DYW

DYW/KMH

MDB

168°

90°

71° 50°

30.0'

9.0'

1.0'

30.0'

10.0'

6.0'

1.0'

20.0'

10.0'

9.0'

10.0'

10.2'

2.0'

10.8'

10.5'

MARK DATE DESCRIPTION BY

CHKD:

DRWN:

PROJ:

DESN:

www.tetratech.com

4/ 7/

P M

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S\ D

C \A

C C

D O

C S\

C H

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\S H

\S _P

.D W

S, D

2 3 4 5 6 7

Bar measures 1 inch, otherwise drawing not to scale

C op yr ig ht : T et ra

T ec h

117-002166-24007

GARDINER DIVERSION IMPROVEMENTS PROJECT

ANACONDA, MONTANA

NATURAL RESOURCE DAMAGE PROGRAM

828 Great Northern Blvd, 3rd Floor Helena, Montana 59601

PHONE: +1 (406) 443-5210

03/26/2026

I S-3

90°

WALKWAY NOT SHOWN FOR CLARITY,

SEE WALKWAY AND GUARDRAIL PLAN

ON THIS SHEET

I S-3

K S-3

J S-3

L S-3

LOG GRATE

NEW CONCRETE WALL (TYP.)

EXISTING

CONCRETE SLAB

EXISTING CONCRETE WALL (TYP.)

EXISTING CONCRETE WALL

SCALE:

1.5' 3' 6'

1'' = 3' N

CONNECT TO EXISTING

STRUCTURE, SEE NOTES ON S-1

CONNECT TO EXISTING

STRUCTURE, SEE NOTES ON S-1

2.0'

WALKWAY AND GUARDRAIL PLAN

SCALE: 1/4"=1'-0"

SCALE:

1.5' 3' 6'

1'' = 3' N

S-2STRUCTURAL PLAN

DYW

KMH

MDB

150°

EXISTING DIVERSION CURB WALL

DEMOLISH AND REMOVE AS NEEDED

REMOVE EXISTING METAL FRAME

DOWNSTREAM HALF OF

RETAINING WALL SLOPE 5%

TOW = 5103.00

TOW = 5101.50

TOW = 5104.00

NEW HEADGATE WALL,

SEE SHEET D-2

2'-0" 2'-0" TOF = 5095.00

1'-0"

#5 @ 12" O.C.

EACH WAY, T&B

#5 @ 12" O.C. HORIZONTAL

AND FULL HEIGHT DOWELS

EACH FACE

TOW = 5104.00

1'-0"

TOS = 5098.00

TOW = 5104.00

#5 @ 12" O.C.

EACH WAY, T&B

#5 @ 12" O.C. HORIZONTAL

AND FULL HEIGHT DOWELS

EACH FACE

GATE NOT SHOWN

FOR CLARITY

WALKWAY AND

GUARDRAIL NOT

SHOWN FOR CLARITY

#5 @ 12" O.C.

EACH WAY, CENTERED

ON CUTOFF

#5 @ 12" O.C.

EACH WAY, CENTERED

ON CUTOFF

2'-0"

10'-0"

1'-0"

2'-0"

4'-0"

1'-0"

EXISTING CONCRETE SLAB

DESIGN UNKNOWN

TOW = 5104.00

#5 @ 12" O.C.

EACH WAY, T&B

TOS = 5098.00

WALKWAY

TOW = 5104.00

1'-0"1'-0" 1'-0"

TOF = 5095.00

#5 @ 12" O.C. HORIZONTAL

CUTOFF WALL

GUARDRAIL NOT

SHOWN FOR CLARITY

#5 @ 12" O.C. HORIZONTAL

4'-0"

3'-0" 3'-0"

EXISTING CONCRETE SLAB

DESIGN UNKNOWN

TOW = 5104.00

1'-0"

#5 @ 12" O.C.

EACH WAY, T&B

#5 @ 12" O.C. HORIZONTAL

TOS = 5098.00

TOF = 5095.00

#5 @ 12" O.C.

EACH WAY, T&B

MARK DATE DESCRIPTION BY

CHKD:

DRWN:

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P M

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S\ D

C \A

C C

D O

C S\

C H

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\S H

\S _P

.D W

S, D

2 3 4 5 6 7

Bar measures 1 inch, otherwise drawing not to scale

C op yr ig ht : T et ra

T ec h

117-002166-24007

GARDINER DIVERSION IMPROVEMENTS PROJECT

ANACONDA, MONTANA

NATURAL RESOURCE DAMAGE PROGRAM

828 Great Northern Blvd, 3rd Floor Helena, Montana 59601

PHONE: +1 (406) 443-5210

03/26/2026

SECTION II

S-2 SCALE: 1" = 3'

SECTION JJ

S-2 SCALE: 1" = 3'

SECTION KK

S-2 SCALE: 1" = 3'

SECTION LL

S-2 SCALE: 1" = 3'

S-3STRUCTURAL SECTIONS

DYW

KMH

MDB

1'-0" 1'-0"

1'-0"

1'-9" 1'-9"

3'-6"

5'-0"

MAX POST SPACING

TOP OF WALKING SURFACE

VERT POST, 1 12" DIA

SCH 80 PIPE, TYP

HORIZ RAIL,1 12" DIA

SCH 40 PIPE,TYP

ELEVATION

NOTES

1. SEE PLANS FOR GUARDRAIL LOCATIONS AND CONFIGURATION.

2. PROVIDE RETURNS AS REQUIRED OR AS INDICATED ON THE PLANS.

MAXIMUM RETURN LENGTH SHALL BE 18" FROM NEAREST POST.

3. COPE AND MITER ENDS OF PIPE AS REQUIRED PRIOR TO WELDING.

4. WHERE GUARDRAIL IS INTENDED TO BE REMOVABLE, EACH SECTION OF

REMOVABLE RAIL SHALL CONSIST OF 2 VERTICAL POSTS.

TYP

3/16

3/16TYP

TYP

REINFORCEMENT FOR WALL OPENINGS

SCALE: N.T.S6

TYPICAL DOUBLE MAT CORNERING

& INTERSECTION REINFORCING

SCALE: N.T.S (SEE PLANS FOR SIZE AND SPACING)7

MARK DATE DESCRIPTION BY

CHKD:

DRWN:

PROJ:

DESN:

www.tetratech.com

4/ 7/

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Bar measures 1 inch, otherwise drawing not to scale

C op yr ig ht : T et ra

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117-002166-24007

GARDINER DIVERSION IMPROVEMENTS PROJECT

ANACONDA, MONTANA

NATURAL RESOURCE DAMAGE PROGRAM

828 Great Northern Blvd, 3rd Floor Helena, Montana 59601

PHONE: +1 (406) 443-5210

03/26/2026

GUARDRAIL

SCALE: 1" = 1'8

2" 3" 3" 11 2"

4" MIN

EDGE

DISTANCE

EDGE OF CONCRETE

2-5/8" DIA ADHESIVE

ANCHORS, 9" EMBED

PL 5/8, PROVIDE

NON-SHRINK GROUT UNDER

PLATE AS REQ'D TO LEVEL

TYP GUARDRAIL POST

1/4

1/2" DIA DRAIN HOLE

4" MIN

EDGE

DISTANCE

SURFACE MOUNT TO TOP OF WALL

PLAN VIEW

SCALE: 1" = 0'-6"9

S-4STRUCTURAL DETAILS

DYW

KMH

1 1/2"

3 1/2"

1 1/2"

5" 1 1/2"

ELEVATION

TOP OF CONCRETE

TYP VERT POST

PL 1/2

4-5/8" DIA ADHESIVE ANCHORS W/ 4" EMBED

11"

1'-0"

11"

(TYP)

HSS 5" x 5" x 12"

5104.00

5100.00

℄ HSS

(TYP)

GUARDRAIL ABOVE NOT SHOWN

CONTRACTOR TO COORDINATE PLACEMENT

OF GUARDRAIL POST w/ ANCHORS

2" STL EMBED/FACE PLATE

(2) 3 4" DIA. ANCHORS SPACED AS SHOWN.

CONTRACTOR MAY INSTALL 6" HAS WELDED TO PLATE AND CAST-IN-PLACE OR DRILL

AND EPOXY ANCHOR ROD w/ 6" MIN EMBED. IF DRILL AND EPOXY IS USED THEN

CONTRACTOR TO CORRDINATE BAR PLACEMENT TO AVOID CONFLICTS (TYP)

11"

HSS TO PLATE

TYP ALL HSS3

HSS 5" x 5" x 12"

PL1/4 CAP PLATE W/ 1/2" DIA DRAIN HOLE

POST TO PLATE

CAP TO POST

SECTION

TOP OF CONCRETE

MARK DATE DESCRIPTION BY

CHKD:

DRWN:

PROJ:

DESN:

www.tetratech.com

4/ 7/

P M

:\U

R S\

S\ D

C \A

C C

D O

C S\

C H

O J\

\S H

\S _D

W G

S, D

2 3 4 5 6 7

Bar measures 1 inch, otherwise drawing not to scale

C op yr ig ht : T et ra

T ec h

117-002166-24007

GARDINER DIVERSION IMPROVEMENTS PROJECT

ANACONDA, MONTANA

NATURAL RESOURCE DAMAGE PROGRAM

828 Great Northern Blvd, 3rd Floor Helena, Montana 59601

PHONE: +1 (406) 443-5210

03/26/2026

GUARDRAIL FACE MOUNT CONNECTION

SCALE: 1" = 5'10

LOG GRATE DETAIL

SCALE: 1" = 0'-6"11

NOTES

1. LOG GRATE ENDS SHALL BE FABRICATED TO

MEET CONCRETE WALL END FLUSH. SEE PLANS

FOR END ANGLES.

NOTES

1. WHERE GUARDRAIL IS INTENDED TO BE REMOVABLE, PROVIDE 8" LONG 2" DIA SCH 40 PIPE SLEEVE

WELDED TO PLATE. PROVIDE 1/4" CAP PLATE AT BOTTOM W/ 1/2" DRAIN HOLE. PROVIDE 1/4" PIN WITH

CHAIN OR RETAINER CLIP THROUGH SLEEVE TO PREVENT ACCIDENTAL REMOVAL OF RAIL.

2. WHERE DOUBLE POSTS ARE REQUIRED, CONNECTION PLATE WIDTH MAY BE INCREASED TO A MAXIMUM

OF 12".

S-5STRUCTURAL DETAILS

DYW

KMH

File details come from the government source that posted it. Updated Jul 6, 2026.