B09_Rev1_2_Drawing_Shts_C3_0_C3_1_April_18_2024_Amd5__0005.pdf
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- Attached to
- WRST 248940 - Replace Deficient WTP/Systems.
- Solicitation number
- 140P2024R0034
About this file
This document appears to be construction drawings for the replacement of a deficient water treatment system at the Wrangell-St. Elias National Park & Preserve Visitor Center/Headquarters. The key details are:
The project will involve the construction of a new water treatment plant building, leach field expansion, and associated utility work including sewer, water, and propane service. The new building will be placed in the same orientation as the existing building and the finish floor will be set to accommodate proper drainage around the structure. The contractor shall measure existing elevations and document as-built conditions during construction. The leach field will provide an additional 182 GPD capacity to the existing 511 GPD system, for a total of 693 GPD. The contractor shall excavate to determine if a confining layer is present and report findings to the engineer. All construction must comply with the applicable building codes and specifications.
This project is associated with Solicitation Number 140P2024R0034, issued by the Department of the Interior National Park Service, to replace the deficient Visitor Center/Headquarters Water Treatment System at Wrangell-St. Elias National Park & Preserve.
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Text version
A B C
PROPOSED
WTP
TRAIL CREW BUILDING RELOCATED BY PARK STAFF, NOT IN CONTRACTORS SCOPE
TRAIL
CREW
BLDG.
20' MIN
PROPOSED LEACH FIELD EXPANSION
SITE GRADING AND FINISHED FLOOR, SEE NOTE 4 AND 5. GRADE
TO DRAIN AROUND BUILDING, DO NOT DIRECT STORMWATER
TOWARDS OTHER STRUCTURES OR DRIVING SURFACES.
CONTRACTOR STAGING AND LAYDOWN
PROPOSED SEPTIC TANK
BOLLARDS, SEE ARCHITECTURAL FOR LAYOUT.
INSTALL PER DETAIL 2/C4.2
200' WELL RADIUS
PROPANE TANK, GRADE GROUND
BELOW TANK LOCATION TO BE
LEVEL. TANK SHALL BE PLACED
ON CONCRETE BLOCKS
16'
3'
SHEET
PMIS/PKG NO.
DRAWING NO.
187491
SUB SHEET NO.DESIGNED:
CADD:
TECH REVIEW:
DATE:
TITLE OF SHEET
OF
248940
4/1 7/2
4 1
2:0 2:5
7 P M
J:\
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CA
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C2 0-
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NC
ON
W
AY
GL
WRANGELL-ST. ELIAS NATIONAL PARK & PRESERVE
REPLACE DEFICIENT VC/HQ WATER
TREATMENT SYSTEM WRST
N.CONWAY
N.CONWAY
L.CHMIELOWSKI
12/01/2023
C3.0-
SITE LAYOUT
NOTES:
1. PROPOSED WATER TREATMENT PLANT (WTP) WILL BE PLACED PER THE
EXISTING WELL LOCATION. CONTRACTOR SHALL FIND CLEAR SPACE
BETWEEN FENCE AND BUILDING AND PROVIDE INFORMATION TO NPS
PROJECT MANAGER BEFORE CONSTRUCTION TO DETERMINE IF FENCE
WILL BE IMPACTED.
2. ORIENTATION OF PROPOSED BUILDING SHALL MATCH ORIENTATION OF
EXISTING BUILDING.
3. SEE STRUCTURAL SHEETS FOR SUBGRADE IMPROVEMENTS FOR
PROPOSED WTP.
4. CONTRACTOR SHALL MEASURE FINISH FLOOR OF EXISTING WTP
BEFORE DEMOLITION AND REPORT ELEVATION TO ENGINEER PRIOR TO
DEMOLITION.
4.1. PROPOSED FINISH FLOOR SHALL BE SET TO ALLOW THE GROUND
IMMEDIATELY ADJACENT TO THE FOUNDATION TO BE SLOPED AWAY
FROM THE BUILDING AT A SLOPE OF NOT LESS THAN 5-PERCENT
FOR A MINIMUM DISTANCE OF 10 FEET MEASURED PERPENDICULAR
TO THE FACE OF THE WALL. (2021 IBC 1804.4)
4.2. SEE SHEET C3.1. CONTRACTOR SHALL SURVEY AND MEASURE
INVERT OF EXISTING SEWER CLEANOUT AT CONNECTION POINT.
FINISH FLOOR OF PROPOSED WTP WILL BE SET TO ACCOMODATE
NEW PIPE SLOPE AND CONNECTION TO SEWER CATCH BASIN AS
SHOWN IN 3/C4.1. COORDINATE WITH ENGINEER.
5. GRAVEL DRIVEWAY SHALL EXTEND FROM EXISTING GRAVEL ACCESS
ROAD TO BUILDING ENTRANCE AND GARAGE DOOR. COMPACT GRAVEL
TO 95% TO CREATE A FIRM, STABLE SURFACE. RESTORE OTHER
DISTURBED AREA AROUND THE BUILDING TO ORIGINAL CONDITION.
6. SITE CONCRETE SHALL CONFORM TO SPECIFICATION 03 30 00.
REVISIONS
04/18/2024 RESPONSE TO BIDDER QUESTIONS NMC
DATE COMMENT BY
A B C
50LF 1" HDPE SEASONAL WATER
SERVICE, ~12" BURY DEPTH,
SLOPE TO DRAIN
50LF 4x12 ARCTIC PIPE, SEE DETAIL 1/C4.0
CONNECTION TO BUILDING,
SEE DETAIL 3/C4.1
40LF 6x12 ARCTIC PIPE (2" HDPE SUPPLY
AND 2" HDPE RETURN SERVICE)
SEE DETAIL 2/C4.0
EXISTING CLEANOUT
TO REMAIN
SINGLE CLEANOUT WITH
45-DEGREE BEND,
SEE DETAIL 5/C4.0
45-DEGREE BEND
90-DEGREE BEND
10' MIN.
10' MIN.
TRAIL CREW BLDG.
17'
PROPANE TANK,
SEE MECHANICAL
LEACH FIELD - FOUR 24-FT LONG LATERALS
CONSTRUCTED OF INFILTRATOR CHAMBERS.
SEE DETAILS ON C4.1
24'
~11.3'
DOUBLE CLEANOUT,
SEE DETAIL 5/C4.0
~8 LF 4x12 ARCTIC
PIPE @ 2.0% MIN.,
SEE DETAIL 1/C4.0
DISTRIBUTION BOX,
SEE DETAIL 4/C4.0
TWO RUNS OF ~6LF
4x12 ARCTIC PIPE, SEE DETAIL 1/C4.0
USE DOUBLE WYE OR DISTRIBUTION BOX TO
COMBINE SEWER LINES AND CONNECT TO EXISTING
20'
9.4'
~10 LF 4x12 ARCTIC PIPE @ 2.0% MIN., SEE DETAIL 1/C4.0
45° BEND
DISTRIBUTION BOX,
SEE DETAIL 4/C4.0
11'
EXISTING POWER POLE,
PROTECT IN PLACE
SINGLE CLEANOUT,
SEE DETAIL 5/C4.0
SINGLE CLEANOUT WITH 45-DEGREE
BEND, SEE DETAIL 5/C4.0
GROUND EL≈1444.0
INV≈1439.75
50LF 4x12 ARCTIC PIPE @10.1%
SEE DETAIL 1/C4.0
EXISTING CLEANOUT
GROUND EL≈1447.5
INV≈1444.8
24LF 4x12 ARCTIC PIPE @ 1.7%
SEE DETAIL 1/C4.0
10LF 4x12 ARCTIC PIPE @ 2.7%
SEE DETAIL 1/C4.0
1,000 GALLON PE
SEPTIC TANK,
SEE C4.2
EXISTING SEPTIC
TANK TO REMAIN
CONNECT TO
EXISTING SERVICE
GROUND EL≈1443.0
INV≈1438.8
CAP LINE
CAP LINE
SHEET
PMIS/PKG NO.
DRAWING NO.
187491
SUB SHEET NO.DESIGNED:
CADD:
TECH REVIEW:
DATE:
TITLE OF SHEET
OF
248940
4/1 7/2
4 9
:56 :27
A M
J:\
\63
7-
\65
CA
D\ Sh ee tF ile s\G
L - G len na lle n\S
C2 0-
CS
-U
T-
GL
EN
NA
LL
EN
_V 2.d wg U
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NC
ON
W
AY
GL
WRANGELL-ST. ELIAS NATIONAL PARK & PRESERVE
REPLACE DEFICIENT VC/HQ WATER
TREATMENT SYSTEM WRST
N.CONWAY
N.CONWAY
B.DOGGETT
12/01/2023
LEACH FIELD NOTES:
1. 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.
2. THE PROPOSED LEACH FIELD SHALL COVER A MINIMUM OF 270 SF.
3. CONTRACTOR SHALL DOCUMENT INSTALLATION OF PROPOSED LEACH
FIELD AND SEWER PIPE MODIFICATIONS WITH AS-BUILT NOTES,
ELEVATIONS, AND PHOTOS. DOCUMENTATION SHALL BE DELIVERED TO
ENGINEER ONCE CONSTRUCTION IS COMPLETE FOR RECORD
DRAWINGS.
4. THE CAPACITY OF EXISTING LEACH FIELD IS 511 GPD PER 2013 DESIGN
DOCUMENTS. EXISTING SYSTEM WAS APPROVED BY ADEC (PLAN
REVIEW NO.: 8037). PROPOSED LEACH FIELD WILL ADD 182 GPD
CAPACITY TO SYSTEM, PROVIDING A TOTAL CAPACITY OF 693 GPD.
5. DO NOT CONSTRUCT PROPOSED LEACH FIELD UNDER DRIVEWAYS.
WTP UTILITY NOTES:
1. SLOPE SEWER PIPE AT 2-PERCENT.
CONTRACTOR SHALL DETERMINE INVERT
ELEVATION OF EXISTING SEWER AT
CLEANOUT BEFORE CONSTRUCTING NEW
SEWER CONNECTION. MAINTAIN MAXIMUM
COVER OVER SEWER SERVICE FOR AS
MUCH OF THE RUN AS POSSIBLE. RECORD
INVERT ELEVATIONS AND DEPTH OF COVER
AT HORIZONTAL AND VERTICAL CHANGES.
CONTACT ENGINEER IF 4-FT COVER
CANNOT BE MAINTAINED.
C3.1
WTP UTILITIES
1"=10'
C3.1
SEPTIC TANK AND LEACH FIELD
1"=10'
C3.1-
UTILITY LAYOUT
SEPTIC TANK AND SEWER NOTES:
1. GROUND AND PIPE ELEVATIONS COLLECTED BY NPS STAFF.
CONTRACTOR TO LOCATE EXISTING PIPES AND VERIFY CONNECTION
ELEVATIONS BEFORE EXCAVATION AND INSTALLATION.
2. CONTRACTOR SHALL DOCUMENT INSTALLATION OF PROPOSED SEWER
SERVICE RE-ROUTE AND SEPTIC TANK WITH AS-BUILT NOTES,
ELEVATIONS, AND PHOTOS. DOCUMENTATION SHALL BE DELIVERED TO
ENGINEER ONCE CONSTRUCTION IS COMPLETE FOR RECORD DRAWINGS.
REVISIONS
04/05/2024 ADEC REVIEW COMMENT NMC
04/18/2024 RESPONSE TO BIDDER QUESTIONS NMC
DATE COMMENT BY
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