B09_240424-HQ-ADEC_Revisions_Amd6_0006.pdf

GARAGE/

UTILITY

HEADQUARTERS

EXISTING 6" SEWER PIPE

EXISTING CLEANOUT

PROTECT HEADQUARTERS SEWER SYSTEM

EXISTING SEWER FROM

GARAGE/UTILITY TO REMAIN

REMOVE EXISTING SEPTIC TANK

9.0-FT

CUT EXISTING SEWER AT 9.0-FT FROM

EXISTING CLEANOUT, SEE NOTE 1

REMOVE EXISTING CLEANOUT AND PIPING

EXISTING CLEANOUT

REMOVE EXISTING LEACH FIELD

APPROXIMATE LIMITS OF PROPOSED

LEACH FIELD EXCAVATION, REMOVAL OF

ITEMS IN NOTE 1, AND INSTALLATION OF

NEW SEPTIC TANK AND PIPING.

EXISTING SEWER FROM

GARAGE/UTILITY TO REMAIN

APPROXIMATE LIMITS OF EXCAVATION FOR

WATER STORAGE TANK AND PLUMBING

EXISTING 8" UTILIDOR, PROTECT IN PLACE

EXISTING ELECTRICAL EQUIPMENT, PROTECT IN PLACE

SHEET

PMIS/PKG NO.

DRAWING NO.

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WRANGELL-ST. ELIAS NATIONAL PARK & PRESERVE

248940

REPLACE DEFICIENT VC/HQ WATER

TREATMENT SYSTEM WRST

N.CONWAY

N.CONWAY

L. CHMIELOWSKI

12/01/2023

EXISTING CONDITIONS

AND DEMOLITION

C1.1-

DEMOLITION NOTES

1. REMOVE ALL EXISTING SEWER SYSTEM COMPONENTS

DOWNSTREAM OF CONNECTION POINT. THE PIPING,

SEPTIC TANK, CLEANOUTS, INSPECTION PIPES, AND

LEACH FILED PIPES SHALL BE REMOVED AND DISPOSED

PER THE ADEC ONSITE WASTEWATER SYSTEM

INSTALLATION MANUAL, ARTICLE 3.17.

2. DO NOT DAMAGE THE HEADQUARTERS BUILDING SEWER

SYSTEM. THE HEADQUARTERS SYSTEM SHALL BE

PROTECTED IN PLACE

REVISIONS

04/24/2024 ADEC REVISIONS NMC

DATE COMMENT BY

GARAGE/

UTILITY

HEADQUARTERS

VISITOR CENTER

MUSEUM

T

H

E

A

T

R

E

E

X

H

I

B

I

T

S

~200-FT WELL RADIUS

PROJECT AREA;

SEE 2/C2.0

EXISTING 6" SEWER PIPE

CONCRETE PAD FOR 5000

GALLON WATER STORAGE

TANK, SEE 1/C2.0

DEEP TRENCH LEACH

FIELD; SEE C3.2

EDGE OF CLEARING

EXISTING CLEANOUT, TYP

CONNECT TO EXISTING

SYSTEM, SEE NOTE 2

HEADQUARTERS SEWER SYSTEM ,

PROTECT IN PLACE

PROJECT AREA;

SEE 1/C2.0

10.0-FT MINIMUM CLEARANCE

GARAGE/

UTILITY

CONCRETE PAD, SEE

NOTE 1 AND DETAIL 1/C3.0

WATER STORAGE TANK,

SEE PLUMBING SHEETS

FOR TANK AND

CONNECTIONS

A

A

10.0-FT

5.0-FT MAX.

SEE GENERAL CIVIL NOTE 4

4-IN PERFORATED PIPE,

DEEP TRENCH, TYP

92.0-FT

INSPECTION PIPE, TYP

DOUBLE CLEANOUT, TYP

20-LF 6-IN HDPE IN 15" ARCTIC PIPE

NEW 4,500 GALLON SEPTIC TANK

CLEANOUT AND

4-IN 90° BEND

4-IN 45° BEND, TYP

10.0-FT 4-IN HDPE ARCTIC PIPE

PROTECT IN PLACE

EXISTING SEWER FROM

GARAGE/UTILITY TO REMAIN

45° BEND

10-LF 6-IN HDPE IN 15" ARCTIC PIPE

CUT EXISTING SEWER AND INSTALL

CLEANOUT AND 45° BEND

DISTRIBUTION BOX

55.0-FT

C2.0

WATER STORAGE TANK PAD

1" = 20'

GENERAL CIVIL NOTES:

1. CONTRACTOR TO VERIFY LOCATION OF

WATER STORAGE TANK PAD WITH PARK

PERSONNEL PRIOR TO CONSTRUCTION.

LOCATE UTILITIES AND VERIFY

SEPARATION DISTANCES ARE MET. SET

ELEVATION OF PAD PER PLUMBING

REQUIREMENTS, AND HIGH ENOUGH SO

THAT SURROUNDING GROUND DRAINS

AWAY AT 5% FOR 5-FT MINIMUM. DO NOT

DIRECT RUNOFF TOWARDS

GARAGE/UTILITY BUILDING.

2. REMOVE ALL EXISTING SEWER SYSTEM

COMPONENTS DOWNSTREAM OF

CONNECTION POINT. DO NOT DAMAGE

THE HEADQUARTERS BUILDING SEWER

SYSTEM. THE HEADQUARTERS SYSTEM

SHALL BE PROTECTED IN PLACE.

3. ADDITIONAL SPACE FOR CONTRACTOR

STAGING MAY BE PROVIDED IN VISITOR

PARKING LOT. COORDINATE WITH PARK

STAFF.

4. RECORDS DO NOT INDICATE A CLEANOUT

ON THE EXISTING SEWER LINE WITHIN

5-FT OF THE BUILDING. CONTRACTOR

SHALL INSPECT UTILITY AND VERIFY IF A

CLEANOUT HAS BEEN INSTALLED. IF

THERE IS NO CLEANOUT THE

CONTRACTOR SHALL INSTALL ONE

WITHIN 5-FT OF THE BUILDING AND NOTE

ON RECORD DRAWINGS.

C2.0

SEPTIC SYSTEM

1" = 20'

LEACH FIELD NOTES:

1. SEE SHEETS C3.1 AND C3.2 FOR SEPTIC TANK AND LEACH

FIELD INSTALLATION.

2. THE CAPACITY OF THE PROPOSED LEACH FIELD IS 4,300

GPD USING AN APPLICATION RATE OF 0.88 GPD/SF.

3. CONTRACTOR SHALL EXCAVATE 6-FT BELOW BOTTOM OF

PROPOSED LEACH FIELD TO DETERMINE IF A CONFINING

LAYER IS PRESENT, DOCUMENT FINDINGS, AND REPORT

TO ENGINEER.

SITE PLAN

C2.0-

CONTRACTOR STAGING AND LAYDOWN

SHEET

PMIS/PKG NO.

DRAWING NO.

187491

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WRANGELL-ST. ELIAS NATIONAL PARK & PRESERVE

248940

REPLACE DEFICIENT VC/HQ WATER

TREATMENT SYSTEM WRST

N.CONWAY

N.CONWAY

L. CHMIELOWSKI

12/01/2023

REVISIONS

SHEET

PMIS/PKG NO.

DRAWING NO.

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WRANGELL-ST. ELIAS NATIONAL PARK & PRESERVE

248940

REPLACE DEFICIENT VC/HQ WATER

TREATMENT SYSTEM WRST

N.CONWAY

N.CONWAY

L. CHMIELOWSKI

12/01/2023

6-IN

12-IN

BEDDING, 2-IN MINUS

CLASSIFIED MATERIAL

EXCAVATE AS REQUIRED

TO REMOVE ALL

UNSUITABLE MATERIAL

ARCTIC PIPE

CLEAN NATIVE MATERIAL,

COMPACTED TO 90%

ARFS

EXISTING GROUND = FINISH GRADE,

GRADE TO DRAIN

C3.1

TRENCH SECTION

NTS

6-IN

3.5-FT MINIMUM

4-IN RIGID INSULATION BOARD,

4-FT WIDE CENTERED OVER PIPE. (MAY BE

USED IN PLACE OF ARCTIC PIPE, SEE 3/C3.0)

SEWER LOCATE TAPE

2-FT MIN.

COMPACT BOTTOM OF TRENCH

C3.1

SEPTIC TANK INSTALLATION DETAIL

NTS

ANCHORS, (TYP OF 6)

CABLE, (TYP OF 3)

SLO

PE T

O D

RAIN

S

LO

P E

TO

D

R A

IN

24-IN MANWAY WITH

INSULATED FROST LID

COMPACTED BACKFILL

MUST BE MOUNDED

4-IN TO 6-IN TO ALLOW

FOR SETTLEMENT

ARFS

BACKFILL WITH EXCAVATED MATERIAL,

COMPACT TO 90%

FILL TANK 1/2 FULL OF WATER

PRIOR TO BACKFILLING

SEPTIC TANK FOUNDATION MUST BE

THOROUGHLY COMPACTED NON-FROST

SUSCEPTIBLE MATERIAL

2-FT MINIMUM

4,500 GALLON

STEEL TANK

NOTE:

1. ANCHORS SHALL BE SEATED AND PROOF

LOADED TO 120% OF DESIGN LOAD.

6-IN ARCTIC SEWER PIPE

FROM EXISTING SYSTEM,

SEE NOTE 4

FLEXIBLE LOW PRESSURE COUPLING WITH 2 EACH

SCREW CLAMPS, FERNCO 1056-54 (OR EQUAL) TO

PROVIDE SMOOTH TRANSITION (TYP OF 2)

BACKFILL IN 12" LIFTS,

COMPACT TO 90%

NOTE:

1. 4,500 GALLON, TWO COMPARTMENT STEEL SEPTIC TANK

MANUFACTURED IN COMPLIANCE WITH 18 AAC AND APP. H

OF THE UNIFORM PLUMBING CODE.

2. SEPTIC TANK MUST BE INSTALLED LEVEL.

3. SOLID PIPE WITH NO JOINTS TO SPAN 10 FEET FROM INLET

AND OUTLET OF TANK

4. THE SLOPE OF THE SEWER PIPE IMMEDIATELY PROCEEDING

THE SEPTIC TANK MUST BE BETWEEN 1% AND 2% FOR AT

LEAST 10-FT.

END VIEW

PROFILE

4-IN SEWER PIPE TO LEACH FIELD,

SEE 3/C3.0 FOR INSULATION

24-IN MANWAYS

WITH INSULATED

FROST LIDS

EXISTING 6" ARCTIC PIPE

PROPOSED CLEANOUT

AT CONNECTION

PROPOSED 6" ARCTIC PIPE

LEACH FIELD,

SEE SHEET C3.2

C3.1

SEWER SYSTEM OVERVIEW

NTS

DOUBLE CLEANOUT

10-FT

PROPOSED 4" ARCTIC PIPE

NOTE:

RIGID BOARD INSULATION SHALL BE DOW STYROFOAM HIGHLOAD 40 OR APPROVED EQUAL

4-IN URETHANE INSULATION, 30 PSI

MINIMUM COMPRESSIVE STRENGTH

MOUND TO DRAIN

C3.1-

DETAILS

4-IN URETHANE INSULATION, 30 PSI

MINIMUM COMPRESSIVE STRENGTH

6-IN PVC INLET TEE

4-IN PVC TEE WITH EFFLUENT FILTER

RATED FOR 4300 GPD MINIMUM

6-IN INSPECTION PIPE WITH CAP

DISTRIBUTION BOX

PERFORATED LEACH FIELD

PIPING BEYOND, TYP

2-FT MINIMUM

REVISIONS

4-IN RIGID BOARD

INSULATION

OVER LEACH

FIELD

DISTRIBUTION

PIPE

9-FT MINIMUM, TYP

2-FT COURSE GRADE SEWER ROCK, TYP

INSPECTION PIPE, TYP,

SEE 2/C3.2

B B

DISTRIBUTION BOX;

SEE DETAIL 3/C3.2

4-IN 90° BEND, TYP

4-IN PERFORATED PIPE, HOLES DOWN, TYP

92-FT MINIMUM, TYP

CLEANOUT AND

90° BEND, TYP

PIPE SLOPE

PER NOTE 1

THIS DETAIL

4.5-FT

EXISTING GROUND

4-IN RIGID INSULATION BOARD

2-FT MINIMUM

6-IN

2-FT COURSE GRADE SEWER ROCK

4-IN RIGID INSULATION BOARD,

SET 6-IN ABOVE PERF. PIPE

GRADE TO DRAIN

GRADE T

O D

RAIN

9-FT MIN,

TYP 4.5-FT

4-IN PERFORATED PIPE, HOLES DOWN, TYP

3.5-FT FROM EXISTING GROUND

EXCAVATED MATERIAL

COMPACTED TO 90%

EXISTING GROUND

FINISHED GRADE, SLOPE TO DRAIN

SHEET

PMIS/PKG NO.

DRAWING NO.

187491

SUB SHEET NO.DESIGNED:

CADD:

TECH REVIEW:

DATE:

TITLE OF SHEET

OF

1204/2 4/2

4 1

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\63

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NC

ON

W

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HQ

WRANGELL-ST. ELIAS NATIONAL PARK & PRESERVE

248940

REPLACE DEFICIENT VC/HQ WATER

TREATMENT SYSTEM WRST

N.CONWAY

N.CONWAY

L. CHMIELOWSKI

12/01/2023

C3.2

LEACH FIELD - TYPICAL

NTS

C3.2

INSPECTION PIPE

NTS

LEACH FIELD - PLAN

LEACH FIELD - SECTION B-B

DETAILS

C3.2-

NOTES:

1. TUF-TITE 9HDB (9-HOLE DISTRIBUTION BOX) USED AS BASIS FOR DESIGN, APPROVED

EQUALS ALLOWED.

2. DISTRIBUTION BOX SHALL BE INSTALLED LEVEL. MANUFACTURER SUPPLIED

"LEVELERS" MAY ONLY BE USED IF THE DIAMETER OF INLET AND OUTLET PIPES IS

NOT DECREASED.

INLET

C3.2

DISTRIBUTION BOX

NTS

REVISIONS

04/24/2024 ADEC REVISIONS NMC

DATE COMMENT BY

NOTES:

1. THE SLOPE OF THE SEWER PIPE IMMEDIATELY PROCEEDING THE LEACH FIELD MUST

BE BETWEEN 1% AND 2% FOR AT LEAST 10-FT.