C04 Attachment 4-Drawings Island Park.pdf

PDF 9 MB Posted Aug 14, 2026

Attached to: GAOA Island Park Sewer System Replacement, Caribou-Targhee National Forest
Solicitation number: 1240LT26Q0104
Issued by: Department of Agriculture Forest Service

About this file

Written by GovTribe AI · Aug 14, 2026

Summary: GAOA Island Park Administration Site Sewer System Replacement Project

This document is a set of construction design drawings and specifications for the replacement of the wastewater system at the GAOA Island Park Administration Site, managed by the U.S. Forest Service (Caribou-Targhee National Forest, Intermountain Region). The project involves replacing two existing sewage lift stations with a single new lift station and installing new gravity and pressure sewer pipelines. The base bid work includes constructing a new sewage lift station with controls and backup generator; installing new 4-inch PVC gravity sewer lines from existing lift stations to the new lift station with associated manholes and lateral connections; installing a new 4-inch HDPE pressure sewer main to the existing county pressure main; installing RV hookups; demolishing two existing lift stations and utility boxes; and patching paved and aggregate road surfaces. The project site is located 53 miles north of Rexburg, Idaho on US Highway 20 at the Island Park Ranger Station (coordinates 44° 25.251' N, 111° 22.217' W, elevation 6270 feet).

The optional work consists of six separate bid schedules for installing additional gravity sewer mains and laterals with associated manholes and cleanouts, connecting existing sewer services from buildings to new sewer laterals, installing additional RV hookups, and demolishing existing manholes and cleanouts. Design drawings include site overview plans, demolition plans, utility separation details, trench cross-sections, lift station details, pressure line utility box details, manhole details, cleanout and RV hookup details, electrical site plans, and location system profiles. All work must comply with Idaho Department of Environmental Quality IDAPA 58.01.16 Wastewater Rules and applicable federal, state, and local regulations. The project drawings were finalized on May 23, 2025.

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Other files

File	Type	Posted
C05 Attachment 5 - DBA WD ID202649 Amend 02.pdf	PDF	Sep 17, 2026
C05 Amendment 02 Island Park.pdf	PDF	Sep 17, 2026
C05 Amendment 01 Island Park.pdf	PDF	Aug 27, 2026
C04 Attachment 5-DBA WD ID20260021 Fremont 051826.pdf	PDF	Aug 14, 2026
C04 Attachment 1-Solicitation Island Park.pdf	PDF	Aug 14, 2026
C04 Attachment 2-SOI Island Park.xlsx	XLSX spreadsheet	Aug 14, 2026
C04 Attachment 3-Specifications Island Park.pdf	PDF	Aug 14, 2026

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FOREST LOCATION

VICINITY MAP

TRAVEL DIRECTIONS:

SHEET OF

United States Department of Agriculture Forest Service

1 32

FROM REXBURG, ID, TRAVEL NORTH ON US-20 FOR 53 MILES. ISLAND PARK RANGER STATION WILL BE

ON THE RIGHT OF THE HIGHWAY AT THE JUNCTION WITH OLD CHICK CREEK ROAD. SEVERAL

PROJECT ACCESS POINTS ARE LOCATED ALONG OLD CHICK CREEK ROAD..

COORDINATES: 44° 25.251' N, 111° 22.217' W

ELEVATION: 6270 FEET

W Y

RECOMMENDED BY:

APPROVED:

FOREST ENGINEER DATE

DIRECTOR OF ENGINEERING DATE

FOREST SUPERVISOR DATE

3/6 /25

:\C

.20

\_G 1.I

IDAHO

FREMONT COUNTY

R-4 INTERMOUNTAIN REGION

CARIBOU-TARGHEE NATIONAL FOREST

ASHTON-ISLAND PARK RANGER DISTRICT

GAOA ISLAND PARK

ADMINISTRATION SITE

SEWER SYSTEM REPLACEMENT

PROJECT SITE

PROJECT DESCRIPTION:

THE PROJECT CONSISTS OF THE REPLACING TWO SEWAGE LIFT STATIONS WITH A

SINGLE LIFT STATION. ASSOCIATED WORK WILL INCLUDE INSTALLING CONNECTING

GRAVITY SEWER PIPELINES AND A RELOCATED PRESSURE SEWER PIPELINE, ALONG

WITH SEVERAL OPTIONAL BID ITEMS FOR REPLACING PORTIONS OF THE SITE SEWER

COLLECTION SYSTEM. BASE BID WORK INCLUDES:

1. CONSTRUCTING A NEW SEWAGE LIFT STATION INCLUDING ASSOCIATED

CONTROLS, BACKUP GENERATOR, ELECTRICAL DESIGN AND SUPPLY;

2. INSTALLING NEW PVC GRAVITY SEWER FROM TWO EXISTING LIFT STATIONS

TO THE NEW LIFT STATION INCLUDING ASSOCIATED MANHOLES AND

LATERAL CONNECTIONS;

3. INSTALLING NEW 4" HDPE PRESSURE SEWER MAIN FROM THE NEW LIFT

STATION TO THE EXISTING COUNTY PRESSURE MAIN, INCLUDING

ASSOCIATED VALVES IN UTILITY BOXES;

4. INSTALLING RV HOOKUPS;

5. DEMOLITION OF TWO EXISTING LIFT STATIONS AND ASSOCIATED UTILITY

BOXES; AND

6. PATCHING PAVED AND AGGREGATE ROAD SURFACES AT CROSSINGS, AND

GENERAL RESTORATION OF IMPACTED SITE GROUNDS.

OPTIONAL WORK INCLUDES:

7. INSTALLING NEW GRAVITY SEWER MAINS AND LATERALS INCLUDING

ASSOCIATED MANHOLES AND CLEANOUTS,

8. CONNECTING EXISTING SEWER SERVICES FROM BUILDINGS TO THE NEW

SEWER LATERALS INCLUDING ASSOCIATED CLEANOUTS,

9. INSTALLING RV HOOKUPS,

10. DEMOLITION OF EXISTING MANHOLES AND CLEANOUTS.

11. PATCHING PAVED AND AGGREGATE ROAD SURFACES AT CROSSINGS, AND

GENERAL RESTORATION OF IMPACTED SITE GROUNDS.

(OPTIONAL WORK IS BROKEN OUT INTO SIX SCHEDULES OF ITEMS.)

INDEX OF SHEETS

SHEET DWG SHEET TITLE

1 G-1 COVER SHEET

2 DE-1 DEMOLITION SHEET INDEX AND NOTES

3 DE-2 DEMOLITION PLAN AND EXISTING CONDITIONS (NORTH)

4 DE-3 DEMOLITION PLAN AND EXISTING CONDITIONS (SOUTH)

5 DE-4 DEMOLITION - EXISTING LIFT STATIONS DETAIL

6 C-1 SITE OVERVIEW, SHEET INDEX, AND GENERAL NOTES

7 C-2 BASE BID SITE OVERVIEW

8 C-3 SEWER LINE "A" PLAN AND PROFILE - STA. 0+00 TO 5+00

9 C-4 SEWER LINE "A" PLAN AND PROFILE - STA. 5+00 TO 9+00

10 C-5 SEWER LINE "A" PLAN AND PROFILE - STA. 9+00 TO 12+60

11 C-6 SEWER LINE "P" PLAN AND PROFILE - STA. 0+00 TO 4+00

12 C-7 SEWER LINE "P" PLAN AND PROFILE - STA. 4+00 TO 9+00

13 C-8 SEWER LINE "P" PLAN AND PROFILE - STA. 9+00 TO 14+00

14 C-9 NORTH BID OPTIONS SITE OVERVIEW

15 C-10 (OPTION 1) SEWER LINE "B" PLAN AND PROFILE - STA. 0+00 TO 3+40

16 C-11 (OPTION 1) SEWER LINE "C" PLAN AND PROFILE - STA. 0+00 TO 2+60

17 C-12 (OPTION 2) SEWER LINE "D" PLAN AND PROFILE - STA. 7+00 TO 11+40

18 C-13 (OPTION 3) SEWER LINE "D" PLAN AND PROFILE - STA. 0+00 TO 4+00

19 C-14 (OPTION 3) SEWER LINE "D" PLAN AND PROFILE - STA. 4+00 TO 7+80

20 C-15 (OPTION 4) SEWER LINE "E" PLAN AND PROFILE - STA. 0+00 TO 3+00

21 C-16 (OPTION 4) SEWER LINE "F" PLAN AND PROFILE - STA. 0+00 TO 2+60

22 C-17 SOUTH BID OPTIONS SITE OVERVIEW

23 C-18 (OPTION 5) SEWER LINE "G" PLAN AND PROFILE - STA. 4+40 TO 8+20

24 C-19 (OPTION 6) SEWER LINE "G" PLAN AND PROFILE - STA. 0+00 TO 5+00

25 C-20 (OPTION 6) SEWER LINE "H" PLAN AND PROFILE - STA. 0+00 TO 2+00

26 D-1 SEWAGE LIFT STATION DETAILS

27 D-2 PRESSURE LINE UTILITY BOX DETAILS

28 D-3 SANITARY SEWER MANHOLE DETAILS

29 D-4 SANITARY SEWER CLEANOUT AND RV HOOKUP DETAILS

30 D-5 TRENCH DETAILS

31 D-6 PIPE SEPARATION, LOCATION SYSTEM PROFILE, AND ACCESS

DRIVEWAY DETAILS

32 E-1 ELECTRICAL SITE PLAN

DISTRICT RANGER DATE

53 MILES TO

REXBURG, ID

ISLAND PARK RSVR

HENRY'S FORK

OLD CHICK CREEK RD.

Kyle Moore

Steven Jenkins

Melvin Bolling

Kevin Bourne

4/2/25

5/23/25

S S

S S S S S

E E

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

4/7 /25

7 K

X :\C

.20

1- C1

0.I

W G;

INTERMOUNTAIN REGION

GAOA

ISLAND PARK

ADMINISTRATION

SITE

SEWER SYSTEM

REPLACEMENT

CARIBOU-TARGHEE

NATIONAL FOREST

ASHTON-ISLAND PARK

RANGER DISTRICT

DEMOLITION SHEET

INDEX AND NOTES

K CARNES

N.ROBINSON

R ANDERSON

DE-1

2 32

EXISTING SOUTH LIFT

STATION TO BE REMOVED

(SEE SHEET DE-4)

D P

D E-

DE-3

GENERAL DEMOLITION NOTES:

1. AN EXTENSIVE EFFORT HAS BEEN MADE TO LOCATE ALL POSSIBLE EXISTING UTILITY LINES FROM RECORDS AND EVIDENCE

IN THE FIELD, HOWEVER, THE COMPLETENESS OR ACCURACY OF THE LOCATIONS SHOWN CANNOT BE GUARANTEED. THE CONTRACTOR IS RESPONSIBLE FOR ESTABLISHING THE LOCATION OF ALL EXISTING UTILITIES. ANY LOCATION STAKED OR SHOWN IS APPROXIMATE. CALL 811 TO HAVE UTILITIES MARKED BEFORE BEGINNING CONSTRUCTION. IF CONFLICTS ARE

FOUND, NOTIFY THE CONTRACTING OFFICER.

2. CLEARING LIMITS SHALL BE 10 FEET EACH SIDE OF THE SEWERLINE TRENCH DESIGN WIDTH (SEE SHEET D-5). THE CONTRACTOR SHALL USE CAUTION AND AVOID DAMAGE TO TREES AND VEGETATION. THE CONTRACTOR SHALL CONFINE

ALL OPERATIONS AND ACTIVITIES TO WITHIN THE CLEARING LIMITS.

3. SAW CUT EXISTING ASPHALT TO BE PATCHED TO LINES AT LEAST 3-INCHES OUTSIDE OF TRENCH IN SUCH A WAY TO AVOID UNNECESSARY INTERIOR CORNERS. ADDITIONAL WIDTH WILL BE ALLOWED TO EXTEND PATCH TO EXISTING CRACKS WITHIN

6" OF PLANNED CUT. SEE TRENCH DETAIL, SHEET D-5.

4. THE EXISTING LIFT STATIONS MUST REMAIN IN SERVICE UNTIL SUCH TIME THAT THE NEW LIFT STATION IS INSTALLED AND ACCEPTED BY THE CONTRACTING OFFICER, AND ALL SERVED FACILITIES HAVE BEEN TRANSFERRED TO THE NEW SYSTEMS.

5. REMOVE UNDERGROUND TANKS, STRUCTURES, PIPELINES AND CONDUIT TO A MINIMUM OF 12" BELOW FINISHED GRADE.

FILL TANKS OR OTHER LARGE VOIDS THAT REMAIN IN PLACE BELOW THAT LEVEL WITH SELECT BORROW MATERIAL. IT IS AT THE CONTRACTOR'S DISCRETION WHETHER TO FULLY REMOVE TANKS OR TO CUT THEM OFF AT THE REQUIRED DEPTH.

ABANDON IN PLACE REMAINING PIPELINES AND CONDUIT, AND CAP LINES TO PREVENT PIPING OF SUBSURFACE WATER.

6. ELECTRICAL FEED WIRES SHALL BE PULLED FROM THE ENTIRE LENGTH OF ABANDONED CONDUIT.

7. CONTRACTOR SHALL COMPLY WITH ALL OSHA CONFINED SPACE REGULATIONS WHEN WORK REQUIRES ENTRY INTO SUCH

FACILITIES.

8. CONTRACTOR SHALL BE RESPONSIBLE FOR PUMPING ALL SEWAGE REMAINING IN VAULTS AND WET WELLS PRIOR TO

DEMOLITION.

9. CONTRACTOR SHALL COORDINATE WITH FREMONT COUNTY SEWER FOR WORK ON OR NEAR THE COUNTY PRESSURE

SEWER MAIN.

10. AT LEAST 2 WEEKS PRIOR TO BEGINNING WORK, THE CONTRACTOR SHALL SUBMIT A PLAN TO ADDRESS THE WASTEWATER

CONTAINED WITHIN THE ABANDONED FORCE MAINS THAT CANNOT DRAIN BACK TO WET WELLS, BUT WILL DRAIN TOWARD THE COUNTY PRESSURE MAIN. THE VOLUME OF THIS WASTEWATER IS EXPECTED TO BE APPROX. 2,000 GALLONS.

11. HIGH GROUNDWATER IS NOT EXPECTED AT THIS SITE.

HENRY'S FORK RIVER

U S

H W

OLD CHICK CREEK RD.

EXIST. COUNTY PRESSURE SEWER MAIN

EXISTING NORTH

LIFT STATION TO

BE REMOVED

(SEE SHEET DE-4)

R G

ISLAND PARK

RANGER STATION

EXISTING SEWER

COLLECTION

SYSTEM TO NORTH

LIFT STATION

EXIST. NORTH PRESSURE SEWER MAIN

EXIST. SOUTH PRESSURE SEWER MAIN

EXISTING SEWER

COLLECTION SYSTEM

TO SOUTH LIFT STATION

RV PARK

BUNKHOUSES

RESIDENTIAL

HOUSING

FIRE SHOP

FIRE

OFFICE

SHEET DE-2 INCLUDES

NORTH BASE BID ITEMS

AND OPTIONS 1, 2, 3, AND 4.

SHEET DE-3 INCLUDES

SOUTH BASE BID ITEMS

AND OPTIONS 5 AND 6.

EXISTING RV PARK

SEWER SYSTEM TO

NORTH LIFT STATION

SAWCUT AND REMOVE

PAVEMENT AT TRENCH

LOCATIONS (TYP.)

BALL FIELD

FINAL: 05/23/2025

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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

3/2 7/2

5 1 4:

N C:

\IS

.20

1- C1

0.I

W G;

INTERMOUNTAIN REGION

GAOA

ISLAND PARK

ADMINISTRATION

SITE

SEWER SYSTEM

REPLACEMENT

CARIBOU-TARGHEE

NATIONAL FOREST

ASHTON-ISLAND PARK

RANGER DISTRICT

DEMOLITION PLAN AND

EXISTING CONDITIONS

(NORTH)

K CARNES

N.ROBINSON

R ANDERSON

DE-2

3 32

EXISTING WATER

LINE (TYP)

FENCE LINE (TYP)

PAVED ROAD (TYP)

UTILITY POLE (TYP)

DEMOLISH EXISTING

NORTH LIFT STATION

(SEE SHEET D-4)

REMOVE CLEANOUT

(OPTION 3)

REMOVE 3

MANHOLES

ABANDON EXIST

SEWER (OPTION 2)

HOUSE

DUPLEX

RANGER DISTRICT

OFFICE

O /H

ELEC

U/G ELEC

REMOVE MANHOLE

(OPTION 4)

REMOVE CLEANOUT

(OPTION 3)

D O

N E

D O

N E

REMOVE CLEANOUTS

(TYP OF 5±) (OPTION 1)

REMOVE 2

CLEANOUTS

(OPTION 1)

ABANDON EXIST

SEW

ER (OPTION 1)

ABANDON EXIST

SEWER (OPTION 1)

REMOVE CLEANOUT

(OPTION 2)

ABANDON EXIST

SEWERS (OPTION 3)

TOILETS/

LAUNDRY

ABANDON EXIST

SEWER (OPTION 4) RV PARK

REMOVE CLEANOUTS

AND RV HOOKUPS

(TYP OF 5±) (OPTION 4)

GRADED ROAD (TYP)

REMOVE/REPLACE CHAIN-LINK

FENCE AS NEEDED (OPTION 2)

ABANDON EXISTING U/G ELECTRIC

FEED FROM METERED OFFICE

PANEL TO NORTH LIFT STATION

REMOVE/REPLACE

WOOD PANEL FENCE

AS NEEDED

SAWCUT AND REMOVE

ASPHALT PAVEMENT

AS NEEDED (OPTION 1)

SAWCUT AND REMOVE

ASPHALT PAVEMENT

AS NEEDED (OPTION 2)

SAWCUT AND REMOVE

ASPHALT PAVEMENT

AS NEEDED (OPTION 3)

SAWCUT AND REMOVE

ASPHALT PAVEMENT

AS NEEDED

REMOVE 2 RV

HOOKUPS

SAWCUT AND REMOVE

CONCRETE WALK AS

NEEDED (OPTION 3)

REMOVE MANHOLE (OPTION 1).

SEWER SERVICES UPSTREAM

OF MANHOLE TO REMAIN TO

HOUSES 1147 AND 1148 .

FINAL: 05/23/2025

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US HIGHWAY 20

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OLD CHICK CREEK RD

HENRY'S FORK RIVER

S S

SSSSSSSSSSSS

W W

EE E

E E

EEE

E E

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

3/2 7/2

5 1 4:

N C:

\IS

.20

1- C1

0.I

W G;

INTERMOUNTAIN REGION

GAOA

ISLAND PARK

ADMINISTRATION

SITE

SEWER SYSTEM

REPLACEMENT

CARIBOU-TARGHEE

NATIONAL FOREST

ASHTON-ISLAND PARK

RANGER DISTRICT

DEMOLITION PLAN AND

EXISTING CONDITIONS

(SOUTH)

K CARNES

N.ROBINSON

R ANDERSON

DE-3

4 32

DEMOLISH EXISTING

SOUTH LIFT STATION

(SEE SHEET DE-4)

REMOVE MANHOLE

EXISTING WATER

LINE (TYP)

DUPLEX

FIRE

OFFICE

O/H ELEC

U /G

ELEC

REMOVE

2 CLEANOUTS

(OPTION 5)

EXIST 4" PRESSURE SEWER (COUNTY)

ABANDON EXIST PRESSURE SEWER

ABANDON EXIST SEWER (OPTION 6)

REMOVE 2

CLEANOUTS

(OPTION 5)

ABANDON EXIST

SEWER (OPTION 5)

RV PARK

GRADED ROAD (TYP)

FIRE

SHOP

STOR.

SHED.

WELL

HOUSE

D O

N E

P R

R E

ABANDON EXIST PRESSURE SEWER

REMOVE MANHOLE,

CAP TEE ON EXIST

PRESSURE MAIN

REMOVE CLEANOUT

(OPTION 6)

REMOVE 2 CLEANOUTS

(OPTION 6)

ABANDON EXISTING ELECTRIC FEED FROM

TRANSFORMER TO SOUTH LIFT STATION (COORDINATE

WITH FALL RIVER ELECTRICAL COMPANY)

BALL FIELD

FINAL: 05/23/2025

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OLD CHICK CREEK RD

E E

S S S

S S

S S S S

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

3/2 7/2

5 1 4:

N C:

\IS

.20

1- C1

0.I

W G;

INTERMOUNTAIN REGION

GAOA

ISLAND PARK

ADMINISTRATION

SITE

SEWER SYSTEM

REPLACEMENT

CARIBOU-TARGHEE

NATIONAL FOREST

ASHTON-ISLAND PARK

RANGER DISTRICT

DEMOLITION - EXISTING

LIFT STATIONS DETAIL

K CARNES

R ANDERSON

DE-4

5 32

DEMOLISH EXISTING

ELECTRICAL FRAME

AND BOXES

U/G ELEC

EXIST 4" PRESSURE SEWER (COUNTY)

ABANDON EXIST PRESSURE SEWER

PAVED ROAD

(SCALE AND NORTH APPLY

TO BOTH SITES)

DEMO 11' X 9' WOOD

FRAME STRUCTURE

WITH CONCRETE FLOOR

ABANDON EXISTING ELECTRIC

FEED ORIGINATING AT RANGER

STATION MAIN PANEL. REMOVE

BREAKERS AT MAIN PANEL

AND INSERT PANEL BLANKS

EXISTING NORTH LIFT STATION EXISTING SOUTH LIFT STATION

VIEW FROM NORTHWEST VIEW FROM SOUTHWEST

ABANDON EXISTING ELECTRIC FEED

FROM TRANSFORMER TO SOUTH LIFT

STATION METER (COORDINATE WITH

FALL RIVER ELECTRIC COMPANY)

DEMO 72" Ø CONCRETE WET WELL. PUMP

OUT AND REMOVE PUMPS AND RELATED

LIFTING HARDWARE. PLUG PIPE INLETS..

DEMOLISH EXISTING 5' X 7'

CONCRETE VAULT. REMOVE

PLUMBING APPURTENANCES

AND PLUG PIPE ENDS.

ABANDON 13 LF± 6" SEWER

TO NEW CLEANOUT

ABANDON 28± LF 6" SEWER

TO NEW MAIN CONNECTION

ABANDON 46± LF 8" SEWER

TO NEW MANHOLE #13A

ABANDON EXIST PRESSURE SEWER

ABANDON EXIST GRAVITY SEWER

DEMO 13' X 13' WOOD

FRAME STRUCTURE

WITH CONCRETE FLOOR

DEMO 72" Ø CONCRETE WET WELL. PUMP

OUT AND REMOVE PUMPS AND RELATED

LIFTING HARDWARE. PLUG PIPE INLETS..

DEMOLISH EXISTING 4' X 4'

CONCRETE VAULT. REMOVE

PLUMBING APPURTENANCES

AND PLUG PIPE ENDS.

ABANDON 53± LF 6" SEWER

TO NEW CLEANOUT

ABANDON 41± LF 6" SEWER

TO NEW CLEANOUT

ABANDON 35± LF 6" SEWER

TO NEW MANHOLE #15B

DEMO CONCRETE PAD

VIEW BELOW

REMOVAL OF ENGINEERS N.I.C.

FINAL: 05/23/2025

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NEW SEWERLINE

NEW OPTIONAL SEWER LINE

EXISTING SEWERLINE

EXISTING WATERLINE

EXISTING PHONE LINE

EXISTING ELECTRICAL LINE

EXISTING FENCE LINE

EXISTING PROPANE LINE

MANHOLE (EXISTING / NEW / OPTION)

CLEANOUT (EXISTING / NEW / OPTION)

RV HOOKUP (EXISTING / NEW / OPTION)

UTILITY BOX WITH COMBINATION AIR VALVE

NEW PRESSURE SEWER VALVE

EXISTING DRAIN

EXISTING WATER VALVE

EXISTING FIRE HYDRANT

EXISTING ELECTRICAL BOX

LOCATING POINT (GROUND / NON-GROUND)

RIVER

EXISTING PAVED ROAD

EXISTING GRADED ROAD

NEW PAVEMENT PATCH

NEW DRIVEWAY OR AGGREGATE PATCH

MAJOR CONTOUR AND ELEVATION (FEET)

S S

S S S S S

S S

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

3/2 7/2

5 1 4:

N C:

\IS

.20

1- C1

0.I

W G;

INTERMOUNTAIN REGION

GAOA

ISLAND PARK

ADMINISTRATION

SITE

SEWER SYSTEM

REPLACEMENT

CARIBOU-TARGHEE

NATIONAL FOREST

ASHTON-ISLAND PARK

RANGER DISTRICT

SITE OVERVIEW,

SHEET INDEX,

AND GENERAL NOTES

K CARNES

N.ROBINSON

R ANDERSON

C-1 6 32

C-17

C-9

C -2

GENERAL CONSTRUCTION NOTES :

1. ALL SEWERLINE SHALL BE SLOPEDAT THE FOLLOWING MINIMUMS:

1.1. 4" GRAVITY 2%

1.2. 4" PRESSURE 0.5%

1.3. 6" GRAVITY 1%

1.4. 8" GRAVITY 0.4%.

2. BURY SEWERLINE A MINIMUM OF 30 INCHES. ADDITIONAL DEPTH MAY BE REQUIRED TO MAINTAIN MINIMUM SLOPES. MINIMUM BURY DEPTH UNDER THE PLOWED ROADS IS 60 INCHES. INSULATION SHALL BE INSTALLED UNDER PLOWED ROADWAYS WHEN PIPE IS 6' DEEP OR LESS. SEE SHEET D-5 NOTE 9.

3. LOCATION AND ORIENTATION OF ALL STRUCTURES SHALL BE APPROVED BY THE CONTRACTING

OFFICER PRIOR TO INSTALLATION.

4. AN EXTENSIVE EFFORT HAS BEEN MADE TO LOCATE ALL POSSIBLE EXISTING UTILITY LINES FROM

RECORDS AND EVIDENCE IN THE FIELD, HOWEVER, THE COMPLETENESS OR ACCURACY OF THE

LOCATIONS SHOWN CANNOT BE GUARANTEED. THE CONTRACTOR IS RESPONSIBLE FOR ESTABLISHING THE LOCATION OF ALL EXISTING UTILITIES. ANY LOCATION STAKED OR SHOWN IS APPROXIMATE. CALL 811 TO HAVE UTILITIES MARKED BEFORE BEGINNING CONSTRUCTION. IF CONFLICTS ARE FOUND, NOTIFY THE CONTRACTING OFFICER.

5. INSTALL THE WASTEWATER SYSTEM ACCORDING TO APPLICABLE FEDERAL, STATE AND LOCAL REGULATIONS, INCLUDING IDAHO IDAPA 58.01.16 "WASTEWATER RULES", CHAPTER 430 FOR PIPELINES

AND APPURTANANCES, AND CHAPTER 440 FOR PUMPING STATIONS ..

6. CLEARING LIMITS SHALL BE 10 FEET ON BOTH SIDES OF THE SEWERLINE TRENCH DESIGN WIDTH (SEE SHEET D-5). THE CONTRACTOR SHALL USE CAUTION AND AVOID DAMAGE TO TREES AND VEGETATION.

THE CONTRACTOR SHALL CONFINE ALL OPERATIONS AND ACTIVITIES TO WITHIN THE CLEARING LIMITS.

7. CONNECTIONS BETWEEN NEW AND EXISTING SEWERLINES SHALL BE INSTALLED IN MANNER

RECOMMENDED BY THE PIPE MANUFACTURER AND APPROVED BY THE CONTRACTING OFFICER.

COMPRESSION-TYPE FITTINGS ARE NOT ALLOWED ON PRESSURIZED SEWERLINE.

8. SAW CUT AND REPAIR ASPHALT WITH COLD ASPHALT MIX. SEE TRENCH DETAIL, SHEET D-5.

9. INSTALL THRUST BLOCKS ON PRESSURIZED SEWERLINES AT LOCATIONS SHOWN ON PLANS. THRUST

BLOCKS ARE NOT REQUIRED FOR FITTINGS THAT ARE FULLY RESTRAINED, WELDED, OR THREADED.

10. WHERE NEW SEWERLINES INTERSECT EXISTING WATERLINES, THE NEW SEWERLINES SHALL BE

INSTALLED ACCORDING TO APPLICABLE FEDERAL, STATE AND LOCAL REGULATIONS, INCLUDING IDAHO DEPARTMENT OF ENVIRONMENTAL QUALITY, IDAPA 58.01.16 "WASTEWATER RULES, CHAPTER 430.”

11. DUCTILE IRON PIPE SHALL BE CEMENT LINED AND SHOP PRIME COATED. ALL BURIED PIPE MUST BE POLYETHYLENE ENCASED. ALL GASKETS SHALL BE FULL FACE 1/8" THICK NEOPRENE RUBBER. NUTS

AND BOLTS IN WET WELL TO BE STAINLESS STEEL.

12. HIGH GROUNDWATER IS NOT EXPECTED AT THIS SITE THAT WOULD IMPACT SEWERLINE

CONSTRUCTION. HOWEVER, GROUNDWATER MAY BE ENCOUNTERED DURING WET WELL

CONSTRUCTION.

HENRYS FORK RIVER

U S

H W

OLD CHICK CREEK RD.

EXIST. COUNTY PRESSURE SEWER MAIN.

EXISTING NORTH

LIFT STATION TO

BE REMOVED

R G

ISLAND PARK

RANGER STATION

NEW GRAVITY AND PRESSURE

SEWER LINES (BASE BID)

SEE SHEET C-2 FOR SITE

OVERVIEW

NEW SEWER COLLECTION

LINES (OPTIONAL BID ITEMS)

SEE SHEET C-9

NEW SEWER COLLECTION

LINES (OPTIONAL BID ITEMS)

SEE SHEET C-17

EXISTING SOUTH

LIFT STATION TO

BE REMOVED

D P

NEW SEWER LIFT STATION

SEE SHEET D-1

SEE SHEET C-2 FOR SITE

OVERVIEW OF BASE BID

WORK.

SHEETS C-3 THROUGH C-8

PROVIDE BASE BID PLANS

AND PROFILES FOR: LINES "A"

AND "P".

SEE SHEET D-1 FOR LIFT

STATION DETAILS (BASE BID).

SEE SHEET D-2 FOR VALVE

BOX DETAILS (BASE BID).

SEE SHEET C-9 FOR SITE

OVERVIEW OF NORTH

OPTIONAL WORK.

SHEETS C-10 THROUGH C-16

PROVIDE PLANS AND

PROFILES FOR: OPTIONS 1-4

SEE SHEET C-17 FOR

SITE OVERVIEW OF

SOUTH OPTIONAL WORK.

SHEETS C-18 THROUGH

C-20 PROVIDE PLANS

AND PROFILES FOR:

OPTIONS 5 AND 6

LEGEND

ROUTE POWER FROM EXISTING

POWER LINES TO LIFT STATION

FOLLOW APPLICABLE STATE

RULES AND REGULATIONS.

SEE SHEET E-1

LINE STA. BASE OPT. 1 OPT. 2 OPT. 3 OPT. 4 OPT. 5 OPT. 6

A ALL C-3,4,5

P ALL C-6,7,8

B ALL C-10

C ALL C-11

<< 7+44 C-13,14 7+44 >> C-12

E ALL C-15

F ALL C-16

<< 4+64 C-19 4+64 >> C-18

H ALL C-20

SEWERLINE / OPTIONS SHEET MATRIX

FINAL: 05/23/2025

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S S

W W

E E

S S S

5+00 6+00

7+00

8+00

9+00

10+00

11+00

12+00

12+60

14+00

0+00

1+00 2+00 3+00

4+00

5+00

6+00

7+00

8+00

9+00

10+00

11+00

12+00

13+00

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

3/2 7/2

5 1 4:

N C:

\IS

.20

1- C1

0.I

W G;

INTERMOUNTAIN REGION

GAOA

ISLAND PARK

ADMINISTRATION

SITE

SEWER SYSTEM

REPLACEMENT

CARIBOU-TARGHEE

NATIONAL FOREST

ASHTON-ISLAND PARK

RANGER DISTRICT

BASE BID

SITE OVERVIEW

K CARNES

N.ROBINSON

R ANDERSON

C-2 7 32

NEW LIFT STATION

EXIST NORTH LIFT STATION

(SEE SHEETS DE-2 AND DE-4)

INSTALL CONNECTIONS

FROM EXISTING LATERAL

MAINS TO NEW SEWER MAIN

NEW 4" PRESSURE MAIN AND

8" GRAVITY MAIN IN COMMON TRENCH

NEW

RAV

MAI

"A " L

NEW 4" PRESSURE MAIN

LINE "P"

T 8"

RAV

MAI

N A

ND 4"

MAI

N (V

CAT

INSTALL CONNECTIONS

FROM EXISTING LATERAL

MAINS TO NEW SEWER MAINEXIST SOUTH LIFT STATION

(SEE SHEETS DE-3 AND DE-4)

T 4"

E M

NEW VALVE UTILITY BOX AND

CONNECTION TO COUNTY

PRESSURE MAIN

(SEE SHEET D-2)

NOTE: PORTIONS OF BASE BID "A" LINE BEYOND

STA. "A"11+56 WILL NOT BE CONSTRUCTED IF

OPTIONS 5 OR 6 ARE SELECTED.

NOTE: PORTIONS OF BASE BID SEWER

LATERALS ENTERING MANHOLE #1

WILL NOT BE CONSTRUCTED IF

OPTIONS 2 OR 3 ARE SELECTED.

DUPLEX

FIRE

OFFICE

RV PARK

FIRE

SHOP

STOR.

SHED.

WELL

HOUSE

DUPLEX

RANGER DISTRICT

OFFICE

OLD CHICK CREEK RD

INSTALL NEW

ACCESS ROAD TO

NEW LIFT STATION

(SEE SHEET D-6)

INSTALL NEW ELECTRICAL

FEED AND GENERATOR

PAD (SEE SHEET E-1)

C-3 C-6

C-4

C-5

C-7

C-8

FINAL: 05/23/2025

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S S

S W

W W

E E

S S

E E

0+00

1+00

2+00

3+00

4+00

5+00

0+00 1+00 2+00 3+00 4+00 5+00

0.4%-0.4%

-0.4%

0.4%

STA: 0+58.9±

ELEV: 6265±

EXIST 6" HDPE

WATER IN SLEEVE

(VERIFY)

STA:1+14.5±

EXIST ELEC. LINE

STA:2+25.5±

EXIST PHONE LINE

M H

U T)

(IN

N E

STA:1+44.3±

EXIST PHONE LINE

M H

U T)

(IN

N E

4" W

: 6

B O

U T

N D

4" W

STA:4+43.9

INSTALL DROP MH #3

IE (IN-S): 6262.03

IE (IN-W): 6260.12 (LOW)

IE (IN-W): 6265.21 (HIGH)

IE (OUT): 6261.95

(INTERSECTS LINE "E")

STA:4+32.3±

EXIST ELEC. LINE

STA:4+63.4±

EXIST ELEC. LINE

STA:4+56.3, 7.7' LT

INSTALL RV

HOOKUP

RIM: 6270.85±

4" W

B O

N (S

T D

-1

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

3/2 7/2

5 1 4:

N C:

\IS

.20

1- C1

0.I

W G;

INTERMOUNTAIN REGION

GAOA

ISLAND PARK

ADMINISTRATION

SITE

SEWER SYSTEM

REPLACEMENT

CARIBOU-TARGHEE

NATIONAL FOREST

ASHTON-ISLAND PARK

RANGER DISTRICT

SEWER LINE "A"

PLAN AND PROFILE

STA. 0+00 - 5+00

K CARNES

N.ROBINSON

R ANDERSON

C-3 8 32

NEW 6" HDPE

PRESSURE MAIN

NEW 8" PVC SEWER

EXIST 8" PVC SEWER

EXIST 4" DI PRESSURE MAIN

EXIST LIFT STATION

TO BE REMOVED (SEE

SHEET DE-2 AND DE-4)

INSTALL MANHOLE #1

(SEE SHEET D-3 TYP.)

STA "A" 0+50.0

STA "D" 7+43.7

PATCH 200 SF PAVEMENT

(SEE SHEET D-5)

INSTALL

MANHOLE #2

STA "A" 1+89.2

STA "B" 3+16.6

REPAIR WOOD PANEL

FENCE (2 LOCATIONS)

INSTALL LIFT STATION

STA "A" 4+02.5

(SEE SHEET D-1)

INSTALL DROP MANHOLE #3

STA "A" 4+43.9

STA "E" 2+77.5

INSTALL 4" WYE TO

RV CONNECTION

STA "A" 4+54.5

8" SDR 35 PVC SEWERLINE

EXISTING GRADE

8" SDR 35 PVC SEWERLINE

SEWER LINE "A" - STA. 0+00 TO 5+00

VERTICAL SCALE: 1" = 4'

HORIZONTAL SCALE: 1" = 40'

PATCH 642 SF AGG

SURFACE (SEE SHEET D-5)

EXIST 6"Ø HDPE

INSTALL 4" SERVICE WYE AND

CONNECT EXISTING 4" LATERAL

IE(4") = 6263.7± (VERIFY)

(NOT REQUIRED IF BID OPTION #1

IS CONSTRUCTED)

EXIST 4"

PVC SEWER

EXIST 8" PVC

SEW

INSTALL MANHOLE #13A

IE(IN) = 6263.2±

IE(OUT) = 6263.1±

(SEE NOTE 1)

NOTES:

1. PRIOR TO SETTING MANHOLE #13A ENSURE MANHOLE IS BEING SET DOWNSTREAM OF LINE SERVING HOUSES 1103, 1158, AND 1159. ADJUST

LOCATION AS NEEDED AND SET ELEVATION TO MATCH EXISTING 8" PVC INLET. WORK IS NOT REQUIRED IF BID OPTION #2 IS CONSTRUCTED..

2. PRIOR TO SETTING CONNECTION TO SOUTH SERVICE LINES, ENSURE CONNECTION IS SET DOWNSTREAM OF WYE TO OFFICE AND DUPLEX 1155

SERVICES. ADJUST LOCATION AS NEEDED. WORK IS NOT REQUIRED IF BID OPTION #3 IS CONSTRUCTED.

3. PRIOR TO PERFORMING ANY WORK ON LINE "A" OR LIFT STATION, VERIFY THAT HOUSE 1103 SERVICE IS AT OR ABOVE IE 6264.19'.

4. CAP AND MARK STUBOUT W/ 4X4 TREATED TIMBER POST AND GROUNDED ACCESS POINT.

5. ALL BASE BID "A" LINE MANHOLES SHALL INCLUDE BASES CONSTRUCTED TO INCORPORATE OPTIONAL INLET PIPING REGARDLESS OF OPTIONAL

WORK BEING INCLUDED IN CONTRACT. UNUSED BASE INLETS ARE TO BE PLUGGED OR CAPPED FOR FUTURE CONNECTION.

EXIST O/H ELEC

EXIST SEWER

T 6"

INSTALL RV CONNECTION

W/ 10 LF 4" PVC LATERAL

INSTALL 2 6" CLEANOUTS AND 6 LF

6" PVC LATERAL TO DIVERT FLOW

TO STUBOUT LINE (NOT REQD IF

BID OPTION 4 IS CONSTRUCTED)

INSTALL 10 LF 6" PVC SEWER

STUBOUT AT 1% SLOPE

INSTALL 6" CLEANOUT AND 45

LF 6" PVC SERVICE TO MH #1

IE(6") = 6263.3± (VERIFY)

(SEE NOTE 2)

3" PAVEMENT PATCH

DUPLEX 1156

INSTALL 5 LF 4" PVC SERVICE

STUBOUT @ 2%, CAP AND

MARK (SEE NOTE 4)

STA "A" 2+18.3

6" AGG. SURFACE

6" AGGREGATE PATCH

LIN

E "B" - O

PTIO

(SEE SH

EET C

-10)

LIN

E "D

" - O

PTIO

(SEE SH

EET C

-14)

LINE "D" - OPTION 2(SEE SHEET C-12

7.5' M

MH #13B - OPTION 2

INSTALL 64 LF 8"Ø C-900 PVC SEWER PIPE

BETWEEN MH #1 AND #13. VERIFY MIN

DISTANCE IS ACHIEVED FROM WATERLINE.

E "E

S H

C -1

CONSTRUCT 12' WIDE AGGREGATE

SURFACE ACCESS DRIVEWAY

(SEE SHEET D-6)

STA: 4+12.5

CONSTRUCT 4" WYE TO

UTILITY BOX

(SEE SHEETS C-6, D-1)

SIZE/TYPE UNCERTAIN

FINAL: 05/23/2025

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S S

S S S

S S

S W

W W

E E

EEEE

S S

5+00

6+00 7+00

8+00

9+00

10+00

5+00 6+00 7+00 8+00 9+00

0.4%

STA:5+29.8 15'± LT

INSTALL CLEANOUT

STA:5+95.3

INSTALL RV

HOOKUP 15' LT

RIM:6270.85±

H O

(I N

(O U

T) : 6

. M

H O

(I N

(O U

T) : 6

STA:8+59.1

INSTALL RV

HOOKUP 7.5' LT

RIM:6272.8±

STA: 6+83.6±

EXIST ELEC.

LINE

4" W

STA:5+58.9±

EXIST ELEC.

STA:8+46.8±

EXIST ELEC. LINE

STA:8+82.1±

EX. PHONE LINE

STA:5+49.7±

ELEV:6268.9±

EXIST 4" ABS

SEWER (VERIFY)

STA:6+08.4±

EXIST 1.5" HDPE

WATER

STA: 7+19.8±

EXIST 6" HDPE

WATER

STA:8+10.7±

EXIST 4" ABS

SEWER

STA: 8+26.0±

EXIST 1.5" HDPE

WATER

4" W

+2 7.

STA: 5+40.2

INSTALL DROP MANHOLE #4

IE (IN - S): 6262.48

IE (IN - W): 6265.93 (HIGH)

IE (IN - W): 6262.57 (LOW)

IE (OUT): 6262.40

4" W

+9 5.

4" W

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

3/2 7/2

5 1 4:

N C:

\IS

.20

1- C1

0.I

W G;

INTERMOUNTAIN REGION

GAOA

ISLAND PARK

ADMINISTRATION

SITE

SEWER SYSTEM

REPLACEMENT

CARIBOU-TARGHEE

NATIONAL FOREST

ASHTON-ISLAND PARK

RANGER DISTRICT

SEWER LINE "A"

PLAN AND PROFILE

STA. 5+00 - 9+00

K CARNES

R ANDERSON

C-4 9 32

PATCH 1800 SF

AGG SURFACE

(SEE SHEET D-5)

SALVAGE AND REINSTALL

RV ELECTRICAL PEDESTAL

INSTALL 6" CLEANOUT 6X4 REDUCER, AND

30 LF 4" PVC SEWER TO EXIST RV

HOOKUP (WORK NOT REQUIRED IF BID

OPTION #4 IS CONSTRUCTED)

8" SDR 35 PVC SEWERLINE

SEWER LINE "A" - STA. 5+00 TO 9+00

VERTICAL SCALE: 1" = 4'

HORIZONTAL SCALE: 1" = 40'

NEW 4" HDPE PRESSURE MAIN

LINE "P" SEE SHEET C-6

NEW 8" PVC SEWEREXIST 4" ABS SEWER

EXIS

T 4

" D I P

RESSURE M

AIN

INSTALL DROP

MANHOLE #4

STA "A" 5+40.2

STA "F" 2+36.4

INSTALL MANHOLE #6

STA "A" 8+86.8

EXISTING GRADE

PATCH 170 SF AGG

SURFACE (SEE SHEET D-5)

EXIST 1.5" HDPE WATER

NOTES:

1. LOCATE SERVICE TO LAUNDRY BEFORE SETTING WYE ON MAIN. ADJUST WYE LOCATION AS NEEDED

TO ACCEPT CONNECTION TO EXISTING SEWER LATERAL. LATERAL TO LAUNDRY AND EXISTING

SEWER DOWNSTREAM MUST REMAIN IN SERVICE UNTIL NEW LIFT STATION, PRESSURE MAIN, AND SEWER MAIN "A" ARE OPERATIONAL. EXISTING SEWER UPSTREAM OF THIS LATERAL MAY BE TAKEN OUT OF SERVICE TO ALLOW FOR CONSTRUCTION WITH CONSENT OF THE CONTRACTING OFFICER.

EXIST 6"

DPE W

ATER

T 6"

E W

EXIS

T O

/H E

EX. 4" ABS SEWER

INSTALL MANHOLE #5

(SEE SHEET D-3 TYP.)

STA "A" 6+40.2

INSTALL 4X8 WYE, 15 LF± 4"

PVC SEWER, 4" CLEANOUT,

AND 4" WYE (SEE NOTE 1)

STA. 5+28±.

INSTALL 8x4 WYE, 15 LF 4" PVC

SEWER, AND RV HOOKUP 14.5'

LEFT (SEE SHEET D-4),

STA. 5+95.3

INSTALL 8x4 WYE AND 48 LF 4"

PVC LATERAL AT 2% SLOPE MIN.

STA. "A" 7+68.5

INSTALL 8x4 WYE, 8 LF 4" PVC

SEWER, AND RV HOOKUP 7.5'

LEFT (SEE SHEET D-4),

STA. "A" 8+59.1

AIR/VAC RELIEF VALVE

(SEE LINE "P")

LAUNDRY

RV PARK

0.4%

6" AGG. PATCH

6" AGGREGATE PATCH

6" AGG. PATCH

LINE "E" OPTION 4

SEE SHEET C-15

LINE "F" OPTION 4

SEE SHEET C-16

6.5' MIN

INSTALL 10 LF 6" PVC

SEWER AT 1% SLOPE

BALL FIELD

PATCH 215 SF

AGG SURFACE

(SEE SHEET D-5)

INSTALL RV CONNECTION

STA. "A" 7+65.7, 56' RT.

PATCH 230 SF AGG SURFACE

(SEE SHEET D-5)

INSTALL 26 LF 4" PVC SEWER, AND

RV HOOKUP (SEE SHEET D-4 TYP.)

STA. "A" 5+43.2, 37.4' LT

FINAL: 05/23/2025

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S S

S S S S S S S S S S S

S S S S S S S S S S S S

S S

8+00 9+00 10+00

11+00 12+00

12+60

9+00 10+00 11+00 12+00 12+60

0.4%

M H

U T)

: 6

M H

S) : 6

(I N

: 6

U T)

: 6

STA:9+20.0

INSTALL 4" WYE TO

UTILITY BOX DRAIN

(SEE SHEETS C-7 AND D-2)

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

3/2 7/2

5 1 4:

N C:

\IS

.20

1- C1

0.I

W G;

INTERMOUNTAIN REGION

GAOA

ISLAND PARK

ADMINISTRATION

SITE

SEWER SYSTEM

REPLACEMENT

CARIBOU-TARGHEE

NATIONAL FOREST

ASHTON-ISLAND PARK

RANGER DISTRICT

SEWER LINE "A"

PLAN AND PROFILE

STA. 9+00 - 12+60

K CARNES

N ROBINSON

R ANDERSON

C-5 10 32

8" SDR 35 PVC SEWERLINE

SEWER LINE "A" - STA. 9+00 TO 12+60

VERTICAL SCALE: 1" = 4'

HORIZONTAL SCALE: 1" = 40'

NEW 4" HDPE

PRESSURE MAIN

NEW 8" PVC SEWER

EXIST 4" PVC SEW

EXIST 4" PVC

ESSU

E M

AIN

EXIST LIFT STATION

TO BE REMOVED

(SEE SHEET DE-3)

INSTALL MANHOLE #7A

STA "A" 12+13.6

(SEE NOTE 4)

(SEE SHEET D-3 TYP.)

INSTALL 6" CLEANOUT, BEND, AND

46± LF 6" PVC SEWER AT 1% MIN.

SLOPE. (SEE NOTE 3)

CLEANOUT IE = 6266.6± (VERIFY)

EX. 4" PVC SEWER

LOC. UNKNOWN

INSTALL MANHOLE #15A

IE(IN - S) = 6266.13

IE(IN - W) = 6266.0±

IE(OUT) = 6265.84

(SEE NOTE 2)

NOTES:

1. EXACT LOCATION OF TEE BETWEEN SERVICES FROM DUPLEXES 1150 AND 1152 IS UNKNOWN. LOCATE AND REMOVE

TEE. ORIENT A NEW TEE TO REDIRECT FLOW NORTH. INSTALL CLEANOUT ABOVE THROUGH INLET OF TEE. WORK IS

NOT REQUIRED IF BID OPTION #6 IS CONSTRUCTED.

2. BEFORE BEGINNING INSTALLATION OF MANHOLE #15A, INVESTIGATE ALL INCOMING LINE ELEVATIONS. ADJUST MANHOLE LOCATION AS NEEDED TO ENSURE SLOPE OF NEW LINE FROM THE SOUTH CAN BE SET AT 2% MINIMUM.

ELEVATION AND SLOPE OF EXISTING LINE IS UNCERTAIN. WORK IS NOT REQUIRED IF BID OPTION #6 IS CONSTRUCTED..

3. LOCATION. ELEVATION, AND SIZE OF EXISTING LINE ARE UNCERTAIN. VERIFY PRIOR TO BEGINNING CONSTRUCTION OF ANY OF LINE "A" FROM THE NEW LIFT STATION, VERIFY THE MINIMUM 1% SLOPE CAN BE OBTAINED FROM THE EXISTING LINE TO MANHOLE #7A. IF SLOPE CANNOT BE OBTAINED. ELEVATIONS OF THE MANHOLE AND ALL DOWNSTREAM CONSTRUCTION MUST BE ADJUSTED. CONTACT THE CONTRACTING OFFICER FOR DIRECTION. WORK IS NOT REQUIRED

IF BID OPTION #5 IS CONSTRUCTED.

4. INSTALLATION OF MANHOLE #7A AND DOWNSTREAM 8" SEWER TO MANHOLE #7B WILL NOT BE REQUIRED IF BOTH BID

OPTION #5 AND #6 ARE CONSTRUCTED.

G R

R O

REPLACE EXIST WYE WITH 6" CLEANOUT, 6X4 WYE, AND

4X6 REDUCER; AND INSTALL 30 LF 6" PVC LATERAL AT 1%

SLOPE MIN. TO DIVERT FLOW TO MANHOLE #15A (SEE

NOTE 1) (NOT REQD IF BID OPTION 6 IS CONSTRUCTED)

INSTALL 54± LF 8" PVC SEWER

AT 0.4% SLOPE MIN (NOT REQD IF

BID OPTION 6 IS CONSTRUCTED).

MANHOLE #7B (INSTALL

PER BID OPTIONS 5/6)

STA "A" 11+55.7

STA "G" 4+64.5

DUPLEX

EXIST U/G ELEC

EXIST W

ATER

EX. 4" PVC

SEW

EX. 4" PVC SEWER

BALL FIELD

0.4%

NEW 4" HDPE PRESSURE MAIN "P"(SEE SHEET C-7)

STA 9+20

CONSTRUCT 4" WYE FOR UTILITY BOX

(SEE SHEETS C-7 AND D-2)

SEE NOTE 4

ABOVE

EXISTING GRADE

(SEE SHEET C-20)

LINE "H" - OPTION 6

LINE "G

" O

PT. 6

(SEE SHT C-19)

E "G

. 5

S H

T C

-1 8)

FINAL: 05/23/2025

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0+00 1+00 2+00 3+00 4+00

-1.9%

-0.5% 0.5%

0.8%

STA: 0+85.6

6" SEWER LINE "E"

IE: 6265.26

N (S

T D

-1

E C

O N

S H

D -1

7 STA:0+71.6±

EXIST ELEC. LINE

STA:1+04.0±

EXIST ELEC. LINE

STA:1+44.3±

EXIST PHONE

LINE

STA: 1+82.4±

EXIST 4" ABS SEWER

(TO BE ABANDONED)

STA: 2+01.5±

EXIST 4" ABS SEWER

(TO BE ABANDONED)

STA:2+01.5±

EXIST ELEC. LINE

STA: 2+48.5±

EXIST 1.5" HDPE WATER

STA: 2+53.7±

EXIST 1.5" HDPE WATER

STA:3+23.5

EXIST ELEC. LINE

STA:0+83.3±

EXIST 4"ABS SEWER

(TO BE ABANDONED)

STA: 2+34.5

4" PVC SEWER

TO RV HOOKUP

STA: 1+82.4

6" SEWER LINE "F"

IE: 6265.98

LINE "A", 4' LEFT

(SEE SHEET C-3)

STA: 0+52.7±

WYE INSTALLED

ON LINE "A"

(SEE SHEET C-3)

STA: 3+54.4±

EXIST 6" HDPE

WATER

S S

S S S

S S

S W

W W

E E

EEEE

S S

0+00

1+00

2+00

3+00

4+00

5+00

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

3/2 7/2

5 1 4:

:\C

.20

\C 1-

C1 0.I

.D W

INTERMOUNTAIN REGION

GAOA

ISLAND PARK

ADMINISTRATION

SITE

SEWER SYSTEM

REPLACEMENT

CARIBOU-TARGHEE

NATIONAL FOREST

ASHTON-ISLAND PARK

RANGER DISTRICT

SEWER LINE "P"

PLAN AND PROFILE

STA 0+00 - 4+00

K CARNES

N ROBINSON

R ANDERSON

C-6 11 32

INSTALL LIFT STATION

(SEE SHEET D-1)

STA "P" 0+40.0

STA "A" 4+02.5

ELEC AND SEWER XING

STA 2+02±

SEWER LINE "E" XING

STA 0+85.67

SEWER LINE "F" XING

STA 1+82.40

ELEC XING

STA 3+23±

4" DR11 HDPE SEWERLINE

PRESSURE SEWER "P" - STA. 0+00 TO 4+00

VERTICAL SCALE: 1" = 4'

HORIZONTAL SCALE: 1" = 40'

NEW 4" HDPE PRESSURE MAIN

NEW 8" PVC SEWEREXIST 4" ABS SEWER

EXIS

T 4

" D I P

RESSURE M

AIN

EXIST 1.5" HDPE WATER

EXIST 6"

DPE W

ATER

T W

EXIS

T O

/H E

EXIST 4" ABS SEWER

LAUNDRY

RV PARK

VALVE CONTROL VAULT

(SEE SHEET D-1)

EXIST SEWER XING

STA 0+83±

INSTALL 45 BEND OR

MIN 10' RADIUS

STA 278.19±

PATCH 1800 SF

AGG SURFACE

(SEE SHEET D-5)

PATCH 890 SF

AGG SURFACE

(SEE SHEET D-5)

T 8"

4" DIP SEWERLINE

6" AGGREGATE PATCH 6" AGGREGATE PATCH

TOP ELEV: 6270.85

FG: 6270.52

TOP PIPE: 6267.02

8" AGG. SURFACE INSULATION INSULATION

FINAL: 05/23/2025

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File details come from the government source that posted it. Updated Aug 14, 2026.