Attachment 2. Drawings.pdf

PDF 4 MB Posted

Attached to
Forest Service - 3N17. 4 ERFO Road Repairs
Solicitation number
127EAW25R0027
Issued by

About this file

This document is a set of technical drawings for the 3N17.4 Atmospheric River Road Repairs project in the Angeles National Forest, prepared by the United States Department of Agriculture Forest Service. The drawings detail road repair and drainage infrastructure work across five sites, with both base bid and optional work items. Technical specifications include full depth reclamation, pulverization, compaction, asphalt overlay, embankment construction, rip rap installation, erosion control, and drainage structure improvements.

The drawings provide comprehensive technical details for 24-inch drainage components, including two headwall options, two starter options, and a flume option, all constructed from 14-gauge galvanized sheet metal. Work sites are located in Los Angeles County within the San Gabriel Mountains National Monument. The project involves repairing road sections damaged by atmospheric river events, with a total estimated project value between $250,000 and $500,000. The solicitation is a total small business set-aside, with a site visit scheduled for July 21, 2025, and proposal questions due by August 1, 2025.

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FOREST LOCATION MAP

PROJECT LOCATION MAP

TRAVEL DIRECTIONS:

SHEET OF

United States Department of Agriculture

Forest Service

3N17.4 ATMOSPHERIC RIVER ROAD REPAIRS

FROM THE ANGELES NATIONAL FOREST SUPERVISORS OFFICE, HEAD WEST ON I-210. CONTINUE 12.8

MILES ON I-210 AND TAKE EXIT NORTH ONTO HWY-2 ANGELES CREST HIGHWAY. IN APPROXIMATELY

10 MILES, TURN LEFT ONTO THE ANGELES FOREST HIGHWAY AT THE CLEAR CREEK INFO-STATION. IN

APPROXIMATELY 8 MILES, TURN RIGHT ONTO LAC-UPPER BIG TUJUNGA CANYON RD. CONTINUE FOR

3.5 MILES AND ARRIVE AT THE MILL CREEK SUMMIT, FOREST SERVICE ROAD 3N17.4 WILL BE ON YOUR

LEFT.

RECOMMENDED BY:

APPROVED:

FOREST ENGINEER

DISTRICT RANGER

DATE

DATE

DIRECTOR OF ENGINEERING DATE

FOREST SUPERVISOR

DATE

RO FACILITIES PROGRAM MANAGER

DATE

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CALIFORNIA

LOS ANGELES COUNTY

R05 PACIFIC SOUTHWEST

ANGELES NATIONAL FOREST

SAN GABRIEL MOUNTAINS NATIONAL MONUMENT

INDEX OF SHEETS

SHEET SHEET TITLE DATE

01 COVERSHEET 02/12/2025

G-01 GENERAL NOTE 02/12/2025

G-02 OVERALL SITE PLAN 02/12/2025

C-01 BASE BID SITE 5 02/12/2025

C-02 OPTION ITEM SITE 4 02/12/2025

C-03 OPTION ITEM SITE 3 AND 2 02/12/2025

C-04 OPTION ITEM SITE 1 02/12/2025

D-01 ROAD DETAILS 02/12/2025

D-02

ROAD DETAILS (2)

02/12/2025

D-03 DRAIN STAKING DETAILS 02/12/2025

D-04 HEADWALL OPTION 1 02/12/2025

D-05 STARTER OPTION 1 02/12/2025

D-06 HEADWALL OPTION 2 02/12/2025

D-07 STARTER OPTION 2 02/12/2025

D-08 FLUME OPTION 2 02/12/2025

ANGELES NATIONAL FOREST SO

701 N SANTA ANITA AVE

ARCADIA, CA 91006

3N17 MILL CREEK SUMMIT

JUNCTION WITH ANGELES

FOREST HIGHWAY

General Notes:

1. The contractor shall at once report to the Contracting Officer (CO) any errors, inconsistencies or omissions discovered in the contract documents and with information furnished by the U.S. Forest Service. If the contractor performs any construction activity knowing it involved a recognized error, without such notice to the

CO, the contractor shall assume appropriate responsibility for such performance and shall bear an appropriate amount of the attributable costs for correction.

2. All sections mentioned below refer to "Standard Specifications for Construction of Roads and Bridges on

Federal Highway Projects", FP-14 latest edition, Federal Highways Administration. Specifications are in US customary units.

3. All instances in contracting documents which refer to "Plans" or "Project Plans", "Drawings" or "Project

Drawings" refer to this set of drawings.

4. It is highly recommended that contractor visit the site to clarify site access for all equipment and material deliveries. All existing site features are approximate and shall be verified by the contractor.

5. Water availability for the contractor use from Forest Service Infrastructure cannot be guaranteed. All water is considered incidental to individual work items. Contractor shall secure their own water source and water secured shall be free of all deleterious material.

6. Prior to construction COR and Contractor will flag appropriate areas for parking, storing and material stockpile areas.

7. No telephone will be available for contractor use and there is limited network connectivity in remote areas.

Contractor is permitted to use sanitary facilities at the Picnic Area.

8. All Staging areas, bypass locations and other areas disturbed by construction activities shall be restored to previous condition as approved by CO.

9. Clean up and jobsite safety: Contractor shall clean up all debris on a daily basis. Contractor shall at all times secure and cover all tools, building materials, shoring and scaffolding in such a manner that persons cannot climb on them or have access to them.

10. Contractor shall remove from Forest Service land all material generated by on-site activities and not used in the final product.

11. Contractor shall submit a schedule of work for approval at least 10 business days prior to start of work.

12. The General Contractor shall control and supervise the performance of the work of various disciplines prior to and during respective performance of work.

13. All construction activities shall be in accordance with caltrans storm water pollution control best management practices and Forest Service provided BMP's. Contractor shall submit to the COR a written storm water management plan at least 5 business days prior to beginning work. In the event of inclement weather, this plan shall include actions to provide protective covering for excavated or soil stockpile areas and all work in progress.

14. Caltrans storm water quality handbook, Construction Site Best Management Practices Manual can be purchased from the California Department of Transportation, Publications Distribution Unit, (916) 445-3520.

Caltrans Best Management Practices, WM-8 Waste Management, procedures shall be followed for all construction activities where slurries containing asphalt concrete or portland cement concrete are generated, such as from saw cutting, grinding, and grooving, and where concrete trucks and other concrete coated equipment are washed on site.

15. Soil erosion and storm water pollution control measures shall be in accordance with Section 157 Soil Erosion

Control and Caltrans Best Management Practices (BMP) SC-5 fiber roll. Only temporary fiber roll materials as listed in Caltrans BMP SC-5 are approved for use on this project. All applicable material shall be certified weed and seed free.

16. Control points for project are established by the Forest Service and will be provided at pre-construction conference. Contractor to be responsible for staking in accordance with Section 152 Construction Survey and

Staking. All construction staking for elevation control, grade control, site layout, structure components and roadway shall be the responsibility of the contractor. Contractor shall stake location of all structure components for CO approval before any installation takes place. Approval of the construction staking will not relieve the contractor of the responsibility for maintaining the survey work and correcting errors, whether the errors are discovered during the actual survey work or in subsequent phases of the contract. Tie all new contours to existing.

17. It is the responsibility of the Contractor to ensure proper clearance for their equipment. All Clearing and

Grubbing shall be in accordance with Section 201 Clearing and Grubbing. All brush, stumps and trees within project limits that interfere with construction activities may be removed only with prior approval of COR.

Contractor should notify the COR of any necessary Clearing and Grubbing at least 5 working days prior to the start of work. Construction slash shall be removed and disposed of off National Forest Land at a suitable disposal site or chipped in suitable locations determined by the Forest Service. Care shall be taken to avoid damaging all live trees.

18. All roadway pulverization and compaction shall be in accordance with Section 304 Full Depth Reclamation, Section 204.11 Compaction in the FP-14. All unsuitable or excess excavated material shall be placed in areas within project limits or as designated by the CO. Any imported material used in the project shall by from a commercial source and the contractor shall furnish a material certificate of compliance that meets all requirement and is clean and does not contain any noxious weeds or seeds. Imported materials shall be subject to approval by the CO

19. Written dimensions shall take precedence over scaled dimensions.

20. All work shall be performed in accordance with applicable safety standards.

21. Asphalt concrete shall be hot bituminous plant mix (commercial source) per Caltrans inch Maximum (medium).

Bituminous binder shall be PG 64-10, 4% to 6% by weight of dry mineral aggregate, Two (2) inch compacted thickness, in accordance with Section 418 Asphalt Pavement Full Depth Patch, Type 2. Asphalt tack coat to be furnished and carefully applied to surfaces where old and new asphalt meet and in accordance with Section 412

Asphalt Tack Coat. Asphalt tack coat is incidental to asphalt paving work. Only release agents approved by the contracting officer shall be used on this project. Substances used to coat asphalt transport trucks, asphalt trucks and asphalt spreading equipment shall not contain soap and shall be non-foaming and non-toxic. No diesel fuels or kerosene shall be used for cleaning tools or equipment at any time on this project. All areas where new asphalt ties to old asphalt shall be sealed with SS1H and sand after new asphalt has cured. The SS1H shall be placed to completely cover the seam and six (6) inches beyond the seam on both sides where the new asphalt ties to the existing asphalt.

DRAWN

DESIGNER

STAMPS, LOGOS, AND SEALS

PROJECT NAME

DRAWING TITLE

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DRAWING SHEET NO.

DATENO.

REVISION / ISSUE

OFSHEET

United States Department of Agriculture Forest Service

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PACIFIC SOUTHWEST

3N17.4

ATMOSPHERIC

RIVER DAMAGE

ANGELES NATIONAL

FOREST

SAN GABRIEL MOUNTAINS

NATIONAL MONUMENT

GENERAL NOTES

02/12/2025

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OPTION ITEM

SITE 1

OPTION ITEM

SITE 2

OPTION ITEM

SITE 3

BASE ITEM

SITE 5

OPTION ITEM

SITE 4

DRAWN

DESIGNER

STAMPS, LOGOS, AND SEALS

PROJECT NAME

DRAWING TITLE

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DRAWING SHEET NO.

DATENO.

REVISION / ISSUE

OFSHEET

United States Department of Agriculture Forest Service

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3N17.4

ATMOSPHERIC

RIVER DAMAGE

ANGELES NATIONAL

FOREST

SAN GABRIEL MOUNTAINS

NATIONAL MONUMENT

OVERALL SITE PLAN

02/12/2025

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DRAWN

DESIGNER

STAMPS, LOGOS, AND SEALS

PROJECT NAME

DRAWING TITLE

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DRAWING SHEET NO.

DATENO.

REVISION / ISSUE

OFSHEET

United States Department of Agriculture Forest Service

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RIVER DAMAGE

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NATIONAL MONUMENT

BASE BID SITE 5

02/12/2025

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C-01 004 15

ASPHALT HMA CALTRANS 1/2 " TYPE A PG64-10

EMBANKMENT CONSTRUCTION

RIP RAP CALTRANS CLASS 1 (6")

OVERSIDE DRAIN AND FLUME ASSEMBLY

WORK ITEMS

SPEC DESCRIPTION UNIT

QUANTITY

304.05

FULL DEPTH RECLAMATION, PULVERIZATION, COMPACTION AND GENERAL

SAWCUT

SF 3850

204 EMBANKMENT CONSTRUCTION CY 600

403 ASPHALT TON 70

251 RIP RAP CY 5

629.05

EROSION CONTROL BLANKET, TYPE 3.B

SY 800

606 DRAINAGE STRUCTURE AND ROLLING DIP EA 1

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STAMPS, LOGOS, AND SEALS

PROJECT NAME

DRAWING TITLE

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DRAWING SHEET NO.

DATENO.

REVISION / ISSUE

OFSHEET

United States Department of Agriculture Forest Service

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ANGELES NATIONAL

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SAN GABRIEL MOUNTAINS

NATIONAL MONUMENT

OPTION ITEM SITE 4

02/12/2025

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C-02 005 15

ASPHALT HMA CALTRANS 1/2 " TYPE A PG64-10

EMBANKMENT CONSTRUCTION

RIP RAP CALTRANS CLASS 1 (6")

OVERSIDE DRAIN AND FLUME ASSEMBLY

WORK ITEMS

SPEC DESCRIPTION UNIT QUANTITY

304.05

FULL DEPTH RECLAMATION, PULVERIZATION, COMPACTION AND GENERAL

SAWCUT

SF 1302

403 ASPHALT TON 24

251 RIP RAP CY 1

629.05

EROSION CONTROL BLANKET, TYPE 3.B

SY 200

606 DRAINAGE STRUCTURE AND ROLLING DIP EA 1

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DESIGNER

STAMPS, LOGOS, AND SEALS

PROJECT NAME

DRAWING TITLE

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DRAWING SHEET NO.

DATENO.

REVISION / ISSUE

OFSHEET

United States Department of Agriculture Forest Service

2/1 2/2

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3N17.4

ATMOSPHERIC

RIVER DAMAGE

ANGELES NATIONAL

FOREST

SAN GABRIEL MOUNTAINS

NATIONAL MONUMENT

OPTION ITEM SITE 3 AND

02/12/2025

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C-03 006 15

ASPHALT HMA CALTRANS 1/2 " TYPE A PG64-10

EMBANKMENT CONSTRUCTION

RIP RAP CALTRANS CLASS 1 (6")

OVERSIDE DRAIN AND FLUME ASSEMBLY

WORK ITEMS

SPEC DESCRIPTION UNIT

QUANTITY

304.05

FULL DEPTH RECLAMATION, PULVERIZATION, COMPACTION AND

GENERAL SAWCUT

SF 8546

403 ASPHALT TON 155

251 RIP RAP CY 3

629.05

EROSION CONTROL BLANKET, TYPE 3.B

SY 400

606 DRAINAGE STRUCTURE AND ROLLING DIP EA 3

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STAMPS, LOGOS, AND SEALS

PROJECT NAME

DRAWING TITLE

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DRAWING SHEET NO.

DATENO.

REVISION / ISSUE

OFSHEET

United States Department of Agriculture Forest Service

2/1 2/2

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3N17.4

ATMOSPHERIC

RIVER DAMAGE

ANGELES NATIONAL

FOREST

SAN GABRIEL MOUNTAINS

NATIONAL MONUMENT

OPTION ITEM 1

02/12/2025

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C-04 007 15

ASPHALT HMA CALTRANS 1/2 " TYPE A PG64-10

EMBANKMENT CONSTRUCTION

RIP RAP CALTRANS CLASS 1 (6")

OVERSIDE DRAIN AND FLUME ASSEMBLY

WORK ITEMS

SPEC DESCRIPTION UNIT QUANTITY

304.05

FULL DEPTH RECLAMATION, PULVERIZATION, COMPACTION AND GENERAL

SAWCUT

SF 1382

403 ASPHALT TON 25

251 RIP RAP CY 1

629.05

EROSION CONTROL BLANKET, TYPE 3.B

SY 60

606 DRAINAGE STRUCTURE AND ROLLING DIP EA 1

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18' TYP. WIDTH

EXISTING PAVED SURFACE AVERAGE 2"

EXISTING SLOPE VARIABLE

CONSTRUCTION LIMITS IF DITCH RECONSTRUCTION REQUIRED

TYPICAL EXISTING SECTION (N.T.S.)

VARIES

MAINTAIN EXISTING

INSLOPE CONFIGURATION

EXISTING SLOPE VARIES

CONSTRUCTION LIMITS TYP.

NEW ASPHALT OVERLAY 2"

TYPICAL SECTION

EXISTING DITCH

(N.T.S.)

CROSS SLOPE VARIES

EXISTING BASE VARIES 0 - 4"

EXISTING SLOPE VARIABLE

EXISTING SLOPE VARIABLE

COMPACT PULVERIZED ASPHALT BASE

OR EXISTING SUBGRADE TO 95% MAX

DENSITY

DRAWN

DESIGNER

STAMPS, LOGOS, AND SEALS

PROJECT NAME

DRAWING TITLE

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DRAWING SHEET NO.

DATENO.

REVISION / ISSUE

OFSHEET

United States Department of Agriculture Forest Service

2/1 2/2

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PACIFIC SOUTHWEST

3N17.4

ATMOSPHERIC

RIVER DAMAGE

ANGELES NATIONAL

FOREST

SAN GABRIEL MOUNTAINS

NATIONAL MONUMENT

ROAD DETAILS

02/12/2025

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D-01 008 15

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ADJACENT ROADBED.

(2) BERM NOT REQUIRED WHEN DIP EMPTIES ONTO

NATURAL GROUND OR IN INSLOPED ROADS.

B EC

G

H

(SEE SCHEDULE)

SKEWED

AS STAKED

DOWN GRADE BREAK WITH

GRADE CROSS SLOPE

CROSS SLOPE

BERM OR DIKE

12" MIN. HEIGHT

PLAN VIEW

% OF GRADE UNDER 5 8 9 10 1276

"A" LENGTH 45' 50' 55' 60' 65' 70' 80

2.8' 3.0'2.6'2.5'2.3'2.2'2.1'"D" DEPTH

DIMENSION SCHEDULE

PROFILE B.C.E.

PROFILE F.G.H

NOTES:

(1) MATERIAL EXCAVATED SHALL BE PLACED

BY COMPACTION METHOD SPECIFIED FOR

H

F

G

D

1/2"/D

B

C

E

VARIES VARIES

10' MIN. VERT. CURVES

"A"20'

VARIES "A"

(SEE SCHEDULE)

F

PERSPECTIVE VIEW

DRAWN

DESIGNER

STAMPS, LOGOS, AND SEALS

PROJECT NAME

DRAWING TITLE

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DRAWING SHEET NO.

DATENO.

REVISION / ISSUE

OFSHEET

United States Department of Agriculture Forest Service

2/1 2/2

5 1 6:

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PACIFIC SOUTHWEST

3N17.4

ATMOSPHERIC

RIVER DAMAGE

ANGELES NATIONAL

FOREST

SAN GABRIEL MOUNTAINS

NATIONAL MONUMENT

ROAD DETAILS (2)

02/12/2025

Z.BINVERSIE

Z.BINVERSIE

X.XXX

D-02 009 15

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DOWN GRADE

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ORIGINAL SLOPE LINE

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ORIGINAL

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GRADE LINE

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20' MIN

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(MIN)

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RIPRAP PLAN VIEW SECTION B-B

NOTES:

INLET ASSEMBLY PLAN

SPILLWAY INLET ASSEMBLY &

FLUME INSTALLATION - TYP.

24" FLUME BOLTHOLE PLAN

SECTION A-A

DRAWN

DESIGNER

STAMPS, LOGOS, AND SEALS

PROJECT NAME

DRAWING TITLE

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DRAWING SHEET NO.

DATENO.

REVISION / ISSUE

OFSHEET

United States Department of Agriculture Forest Service

2/1 2/2

5 1 6:

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PACIFIC SOUTHWEST

3N17.4

ATMOSPHERIC

RIVER DAMAGE

ANGELES NATIONAL

FOREST

SAN GABRIEL MOUNTAINS

NATIONAL MONUMENT

DRAIN STAKING DETAILS

02/12/2025

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D-03 010 15

AutoCAD SHX Text N.T.S.

AutoCAD SHX Text N.T.S.

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1. ADJOINMENT OF INLET, STARTER, AND FLUME SECTIONS SHALL

AutoCAD SHX Text BE MADE WITH 1/2"x2" BOLTS, 1/2" NUTS AND LOCK WASHERS.

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INSTALL WITH BOLT HEAD ON THE INSIDE. ALL HARDWARE SHALL

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BE HOT-DIPPED GALVANIZED.

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2. FIELD PUNCHED HOLES SHALL BE DEBURRED. EXPOSED METAL

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SHALL BE COATED WITH ZINC DUST-ZINC OXIDE AND EXTERIOR

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ALUMINUM PAINT.

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3. ANCHOR STAKES SHALL BE ATTACHED WITH NO. 9 SINGLE STRAND

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MULTIPLE TIE GALVANIZED. STEEL WIRE THROUGH TWO FIELD

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HOLES, 2" APART, LOCATED EACH SIDE OF ANCHOR STAKE.

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4. EROSION PROTECTION AND RIP-RAP TO BE INSTALLED WHERE

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FEASIBLE. IF PROTECTION WHERE SOIL IS NOT FEASIBLE, MATERIAL

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MATERIAL AT OUTLET TO BE OPENED AND FLARED TO ALLOW

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DRAINAGE. USE NATIVE ROCK IF NO SEPARATE PAY ITEM

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2:1 LAYBACK

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TIEWIRE (TYP.)

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RECTANGULAR

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ATTACHMENT

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(BOTH SIDES)

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EDGE OF TRAVELED WAY

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TOP OF EARTH BERM

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STARTER SECTION

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SPILLWAY INLET ASSEMBLY

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2:1 LAYBACK

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EA. SIDE OF

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FLUME

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INLET SECTION

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SPILLWAY INLET

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NATURAL GROUND

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OR FILL SLOPE

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10 FT. STANDARD LENGTH

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2'-4"(12"SIZE) 3'-6"(24"SIZE)

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BUILT-UP EARTH BERM

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AutoCAD SHX Text 2'±

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EDGE OF TRAVELED WAY

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BLEND TOP OF STANDARD EARTH BERM TO TOP OF INLET SECTION WING. SEE NOTE #5.

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FIELD PUNCH 1/2" HOLES

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OVERLAP 4"± AT ALL JOINTS, UPPER SECTION INSIDE

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NATURAL GROUND OR FILL SLOPE

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USE NATIVE ROCK MATERIAL IF NO SEPARATE PAY ITEM. SEE NOTE #4.

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%%USTARTER SECTION

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%%UINLET SECTION

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FLUME

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CALTRANS CLASS 1 6" RIPRAP

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3' STANDARD

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EARTH BERM

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ANCHOR STAKE (TYP.)

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(2) EACH JOINT

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INSTALL VERTICALLY

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TIE WIRE, TYP.

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1/2" HOLE - 1 EACH SIDE

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LOCATE ONE ANCHOR POST AT THE

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MID POINT OF THE UPPER INLET WING

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AND ONE NEAR THE CONNECTION POINT

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WITH THE STARTER UNIT, BOTH SIDES.

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IF TEE POST IS USED, ROTATE SO THAT

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TWO TIPS TOUCH EACH SIDE OF INLET.

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SEE NOTE #3.

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1/2" HOLES

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(I EACH SIDE FOR 12" FLUMES)

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(2 EACH SIDE FOR 24" FLUMES)

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(12" FLUMES REQUIRE ONE HOLE EACH SIDE)

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(24" FLUMES REQUIRE TWO HOLES EACH SIDE)

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TOTAL FLUME LENGTH AS

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SHOWN ON SCHEDULE.

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ANCHOR STAKE (TYP.)

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(2) EACH JOINT

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INSTALL VERTICALLY

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1/2" HOLES - 2 EACH

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SIDE FOR 24" FLUMES

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(2 PER 24" FLUMES)

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FLUME

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HARDWARE

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LEAVE AT 3" OR CUT FLUSH

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IF NATURAL GROUND IS BELOW

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TOP OF FLUME

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STANDARD COMMERCIAL

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PAINTED STUDDED TEE

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POST

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FLUME SECTION

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RIPRAP OUTLET

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COMPACTED BERM

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PROTECTION.

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ASSEMBLY

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2'-0.25"

R1.5"

R1.5"

2'-0.25"

1'-11.5"

1"

7.2"

1"

7.2" 7.2"

1"

0.4" TYPICAL

1"

1"

6'-0"

2'-.25"

2'-.25"

DRAWN

DESIGNER

STAMPS, LOGOS, AND SEALS

PROJECT NAME

DRAWING TITLE

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DRAWING SHEET NO.

DATENO.

REVISION / ISSUE

OFSHEET

United States Department of Agriculture Forest Service

2/1 2/2

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R05

PACIFIC SOUTHWEST

3N17.4

ATMOSPHERIC

RIVER DAMAGE

ANGELES NATIONAL

FOREST

SAN GABRIEL MOUNTAINS

NATIONAL MONUMENT

HEADWALL OPTION 1

02/12/2025

Z.BINVERSIE

Z.BINVERSIE

X.XXX

D-04 011 15

24" HEADWALL OPTION 1

* MATERIAL-14 GUAGE GALVANIZED SHEET METAL

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1'-11.5"

1.0"

7.2"

2.0"

2.0"

1.0"

R0.5"

R0.5"

0.4" TYPICAL

7.2" 7.2"

1.0"

2'-6"

2'-9.8"

R7"

1.5"

1.5"

DRAWN

DESIGNER

STAMPS, LOGOS, AND SEALS

PROJECT NAME

DRAWING TITLE

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DRAWING SHEET NO.

DATENO.

REVISION / ISSUE

OFSHEET

United States Department of Agriculture Forest Service

2/1 2/2

5 1 6:

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R05

PACIFIC SOUTHWEST

3N17.4

ATMOSPHERIC

RIVER DAMAGE

ANGELES NATIONAL

FOREST

SAN GABRIEL MOUNTAINS

NATIONAL MONUMENT

STARTER OPTION 1

02/12/2025

Z.BINVERSIE

Z.BINVERSIE

X.XXX

D-05 012 15

24" STARTER

OPTION 1

* MATERIAL-14 GUAGE GALVANIZED SHEET METAL

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R3"

1.25"

1.25"

5.5"

R

R

6'-3.8"

1"

1"

8"

1.25"

1.25"

2'-0"

2'-0"

2'-3.8"

R3"

R

0.4" Drill Hole Typical.

DRAWN

DESIGNER

STAMPS, LOGOS, AND SEALS

PROJECT NAME

DRAWING TITLE

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DRAWING SHEET NO.

DATENO.

REVISION / ISSUE

OFSHEET

United States Department of Agriculture Forest Service

2/1 2/2

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PACIFIC SOUTHWEST

3N17.4

ATMOSPHERIC

RIVER DAMAGE

ANGELES NATIONAL

FOREST

SAN GABRIEL MOUNTAINS

NATIONAL MONUMENT

HEADWALL OPTION 2

02/12/2025

Z.BINVERSIE

Z.BINVERSIE

X.XXX

D-06 013 15

24" HEADWALL OPTION 2

* MATERIAL-14 GUAGE GALVANIZED SHEET METAL

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R0.5"

1.25" 1.25"

1.25"

1.25"

2'-6"

8"

1.62"

1.0"

1.0"

8.0"

2'-3.8"

DRAWN

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STAMPS, LOGOS, AND SEALS

PROJECT NAME

DRAWING TITLE

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ARCHIVE NO.

DATE

PROJECT NO.

DRAWING SHEET NO.

DATENO.

REVISION / ISSUE

OFSHEET

United States Department of Agriculture Forest Service

2/1 2/2

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PACIFIC SOUTHWEST

3N17.4

ATMOSPHERIC

RIVER DAMAGE

ANGELES NATIONAL

FOREST

SAN GABRIEL MOUNTAINS

NATIONAL MONUMENT

STARTER OPTION 2

02/12/2025

Z.BINVERSIE

Z.BINVERSIE

X.XXX

D-07 014 15

24" STARTER OPTION 2

* MATERIAL-14 GUAGE GALVANIZED SHEET METAL

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8.0"

1.0"

1.0"

1'-10.1"

DRAWN

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STAMPS, LOGOS, AND SEALS

PROJECT NAME

DRAWING TITLE

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DRAWING SHEET NO.

DATENO.

REVISION / ISSUE

OFSHEET

United States Department of Agriculture Forest Service

2/1 2/2

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R05

PACIFIC SOUTHWEST

3N17.4

ATMOSPHERIC

RIVER DAMAGE

ANGELES NATIONAL

FOREST

SAN GABRIEL MOUNTAINS

NATIONAL MONUMENT

FLUME OPTION 2

02/12/2025

Z.BINVERSIE

Z.BINVERSIE

X.XXX

D-08 015 15

24" FLUME OPTION 2

* MATERIAL-14 GUAGE GALVANIZED SHEET METAL

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