3-Drawings.pdf

PDF 1 MB Posted Sep 17, 2026

Attached to: Bill Parkin (MAK)
Solicitation number: 75H70126Q00035
Issued by: Department of Health and Human Services Indian Health Service

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Written by GovTribe AI · Sep 17, 2026

This document is a set of design plans and specifications for water and septic system sanitation facilities construction prepared by the Indian Health Service (IHS) for a single-family dwelling (1-bedroom home) located at 91 West Place Road, Neah Bay, Washington, on the Makah Indian Reservation. The project, identified as IHS Project No. PO-23D19 and PO-17-C13/PO-17-C13F, was designed by the U.S. Public Health Service Olympic District Office in Bremerton, Washington, with design completion dated August 12, 2026.

The specifications detail a complete water and septic system installation designed for 250 gallons per day (GPD) usage with a soil loading rate of 1.20 gallons per day per square foot. Key components include a 1,000-gallon septic tank, 1,000-gallon pump tank, and a 23-foot by 58-foot mound drainfield system with 12 inches of infiltration bed utilizing chamber-style distribution. The water service connects to the Neah Bay Community Water System via a 1.5-inch HDPE service line with a ball valve box installed near the house. The system incorporates a 40 GPM pump operating at 7 feet total dynamic head with a timed dosed control panel (1 minute on, 300 minutes off), 2-inch PVC transport and manifold piping, 1.25-inch PVC laterals with 1/8-inch orifices spaced at 36 inches. Soil conditions at the site consist of topsoil and medium brown sand overlaying medium gray sand, with water table present at 48-60 inches depth depending on location. The design plans include detailed cross-sections of septic tank and pump tank configurations, chamber-style mound bed installation specifications, and mound cross-section details with 6-inch topsoil coverage and 12-inch minimum sand bed composition.

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Other files

File	Type	Posted
75H70126Q00035-A00001.pdf	PDF	Oct 6, 2026
7-US DOL WD WA20260081 Dated 5-18-2026.pdf	PDF	Sep 17, 2026
B01 75H70126Q00035.pdf	PDF	Sep 17, 2026
6-Measurement and Payment.docx	DOCX document	Sep 17, 2026
2-Technical Provisions.pdf	PDF	Sep 17, 2026
4-Aerial.pdf	PDF	Sep 17, 2026
A11 Pre-Solicitation SAM Notice.pdf	PDF	Sep 17, 2026
5-Aerial II.pdf	PDF	Sep 17, 2026
1-SOW.docx	DOCX document	Sep 17, 2026

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PLAN

NORTH

1" =

40 FEET

LEGEND

SEPTIC TANK

CLEANOUT

OBSERVATION PORT

TEST HOLE LOCATION

WATER SERVICE LINE

WATER METER

WSL

SOIL LOG

0" - 8" TOPSOIL

8" - 12" MEDIUM BROWN

SAND

12"-60" MEDIUM GRAY

SAND

ROOTS PRESENT TO 8"

WATER PRESENT AT 60"

TIME OF OBSERVATION

06-21-26

1BR

NEW HOME

INSTALL 23' X 58'

MOUND SYSTEM

12" OF INFILTRATION BED

Bill Parkin

91 WEST PLACE ROAD

NEAH BAY, WA 98357

INSTALL 1.5" Ø

HDPE SERVICE

LINE WITH 1.5" Ø

BALL VALVE BOX

NEAR HOUSE

WATER SERVICE IS FROM

THE NEAH BAY

COMMUNITY WATER

SYSTEM

INSTALL SEPTIC TANK,

PUMP TANK,

CLEANOUT AND

4" Ø PVC SEWER PIPE1

WSL

UGP

SOIL LOG

0" - 4" TOPSOIL/FILL

4" - 12" MEDIUM BROWN

SAND

12"- 48" MEDIUM GRAY

SAND

ROOTS PRESENT TO 6"

WATER PRESENT AT 48"

TIME OF OBSERVATION

06-21-26

INTENDED USE: 1-BDRM SFD @ 250 GPD

SOIL LOADING RATE: 1.20 (GAL/DAY)/SF

SEPTIC TANK: 1,000 GAL

PUMP TANK: 1,000 GAL

DRAINFIELD: MOUND DRAINFIELD 58'X23'

TRANSPORT: 2" PVC

MANIFOLD: 2" PVC

LATERALS: 1-1/4" PVC

ORIFICE SIZE: 1/8" @ 36" SPACING

PUMP 40 GPM @ 7 FEET TDH

TIMED DOSED PANEL 1 MIN ON, 300 MIN OFF

W. PLACE DRIVE

58'

23'

CONTROL PANEL

AcDbArcAlignedText (ATEXT)

U.S. PUBLIC HEALTH SERVICE

4060 WHEATON WAY, STE. E

BREMERTON, WA. 98310

(360) 792-1235

DATE REVISIONS INIT.

OLYMPIC DISTRICT OFFICE

CHECKED BY:

PROJ ENG:

DRAWN BY: SHEET

Z:\Scattered Projects\_Participants\Makah\Parkin, Bill\2 - Design\Parkin\B. Parkin Septic and Water.dwg - Aug 12, 2026 - 12:43pm

APPROVED BY:

INDIAN HEALTH SERVICE

SANITATION FACILITIES CONSTRUCTION

PROJECT NO:

AcD bArcAlignedText (ATEXT)

AcDbArcAlignedText (ATEXT)

C-1

ZLO

IHS PROJECT NO. PO-23D19

BILL PARKIN

MAKAH INDIAN RESERVATION

91 WEST PLACE ROAD, NEAH BAY, WA

WATER AND SEPTIC

Know what's below.

before you dig.Call

AcDbArcAlignedText (ATEXT)

U.S. PUBLIC HEALTH SERVICE

4060 WHEATON WAY, STE. E

BREMERTON, WA. 98310

(360) 792-1235

DATE REVISIONS INIT.

OLYMPIC DISTRICT OFFICE

CHECKED BY:

PROJ ENG:

DRAWN BY: SHEET

Z:\Scattered Projects\_Participants\Makah\Parkin, Bill\2 - Design\Parkin\B. Parkin Septic and Water.dwg - Aug 12, 2026 - 12:43pm

APPROVED BY:

INDIAN HEALTH SERVICE

SANITATION FACILITIES CONSTRUCTION

PROJECT NO:

AcD bArcAlignedText (ATEXT)

AcDbArcAlignedText (ATEXT)

C-2

ZLO

IHS PROJECT NO. PO-17-C13

BILL PARKIN

MAKAH INDIAN RESERVATION

91 W Place Drive, NEAH BAY, WA

SEPTIC DETAILS

SEPTIC TANK DETAIL

NO SCALE

Know what's below.

before you dig.Call

PUMP TANK DETAIL

NO SCALE

AutoCAD SHX Text

12" MAX SOIL COVER

AutoCAD SHX Text

4" INLET

AutoCAD SHX Text 2 1/2"

AutoCAD SHX Text

MINIMUM

AutoCAD SHX Text

16' MIN.

AutoCAD SHX Text

LIQUID LEVEL

AutoCAD SHX Text

EFFLUENT FILTER

AutoCAD SHX Text

MINIMUM OF 1" BELOW BOTTOM

AutoCAD SHX Text

OF EFFLUENT FILTER

AutoCAD SHX Text

EXTEND 4" PVC PIPE

AutoCAD SHX Text

16' MIN.

AutoCAD SHX Text

MINIMUM 2/3 TOTAL VOLUME

AutoCAD SHX Text 18"

AutoCAD SHX Text

MIN

AutoCAD SHX Text

24" DIA. RISER

AutoCAD SHX Text

24" DIA. RISER

AutoCAD SHX Text

4" INLET

AutoCAD SHX Text 2 1/2"

AutoCAD SHX Text

MINIMUM

AutoCAD SHX Text

LIQUID LEVEL

AutoCAD SHX Text

2" UNION

AutoCAD SHX Text

CONDUIT

AutoCAD SHX Text

ALARM

AutoCAD SHX Text

OFF

AutoCAD SHX Text 31"

AutoCAD SHX Text

PUMP

AutoCAD SHX Text

CONTROL PANEL

AutoCAD SHX Text

CHECK

AutoCAD SHX Text

2" GATE VALVE

AutoCAD SHX Text

OUTLET

AutoCAD SHX Text

2" PVC

AutoCAD SHX Text

VALVE

AutoCAD SHX Text 3.5"

AutoCAD SHX Text

TO BE FIELD

AutoCAD SHX Text

DETERMINED

AutoCAD SHX Text

POLYETHYLENE SCREEN

AutoCAD SHX Text

12" OR 15" DIA. PVC

AutoCAD SHX Text

VAULT (DETERMINED BY

AutoCAD SHX Text

PUMP)

AutoCAD SHX Text

8 EA 1.25" DIA. INLET

AutoCAD SHX Text

HOLES AROUND

AutoCAD SHX Text

PERIMETER OF VAULT

AutoCAD SHX Text

EFFLUENT

AutoCAD SHX Text DRAINPORT w/

AutoCAD SHX Text

ELECTRICAL SPLICE BOX

AutoCAD SHX Text

W/CORD GRIPS

AutoCAD SHX Text

SECURE WITH ELECTRICAL TAPE

AutoCAD SHX Text

(2 PLACES)

AutoCAD SHX Text

24" DIA. RISER

AutoCAD SHX Text

MOUNT ON HOME

U.S. PUBLIC HEALTH SERVICE

4060 WHEATON WAY, STE. E

BREMERTON, WA. 98310

(360) 792-1235

DATE REVISIONS INIT.

OLYMPIC DISTRICT OFFICE

CHECKED BY:

PROJ ENG:

DRAWN BY: SHEET

Z:\Scattered Projects\_Participants\Makah\Parkin, Bill\2 - Design\Parkin\B. Parkin Septic and Water.dwg - Aug 12, 2026 - 12:43pm

APPROVED BY:

INDIAN HEALTH SERVICE

SANITATION FACILITIES CONSTRUCTION

PROJECT NO:

AcD bArcAlignedText (ATEXT)

AcDbArcAlignedText (ATEXT)

C-3

ZLO

IHS PROJECT NO. PO-17-C13F

BILL PARKIN

MAKAH INDIAN RESERVATION

91 W PLACE DR, NEAH BAY, WA

SEPTIC DETAILS

CHAMBER STYLE MOUND BED DETAIL TYP. OF 3

NO SCALE

Know what's below.

before you dig.Call

INSTALL CHAMBER STYLE

INFILTRATION BED

3 ROWS MIN 18" BELOW

TOP OF MOUND

24" OF SAND BELOW CHAMBERS

MOUND CROSS-SECTION DETAIL

NO SCALE

AutoCAD SHX Text 12"

AutoCAD SHX Text

1-1/4" PERFORATED

AutoCAD SHX Text

PVC PIPE, TYE FASTEN

AutoCAD SHX Text

CHAMBER SECTION

AutoCAD SHX Text

18" MIN.

AutoCAD SHX Text

2" MANIFOLD

AutoCAD SHX Text

PIPE

AutoCAD SHX Text

2" 90 ELBOW (TYP.)

AutoCAD SHX Text o

AutoCAD SHX Text

2" X 1-1/4" REDUCER (TYP.)

AutoCAD SHX Text o

AutoCAD SHX Text

LONG-SWEEP

AutoCAD SHX Text

90 ELBOW

AutoCAD SHX Text

THREADED CLEANOUT

AutoCAD SHX Text

WITH 8" RISER

AutoCAD SHX Text

LAST HOLE

AutoCAD SHX Text

POINTED DOWN

AutoCAD SHX Text

(TYP.)

AutoCAD SHX Text

4" INSPECTION PORT

AutoCAD SHX Text

W/ NYLON PIPE STRAP

AutoCAD SHX Text

EVERY 6 1/4 '

AutoCAD SHX Text

12" MIN.

AutoCAD SHX Text

SAND

AutoCAD SHX Text

SLOPE VARIES

AutoCAD SHX Text

CLEAN SAND FILL

AutoCAD SHX Text

6" TOPSOIL

AutoCAD SHX Text

OBSERVATION PIPE

AutoCAD SHX Text

TYPAR STYLE 3151

AutoCAD SHX Text

OR EQUAL

AutoCAD SHX Text

DISTRIBUTION LATERAL

AutoCAD SHX Text

PIPE FROM LIFT STATION

AutoCAD SHX Text

CHAMBER STYLE DISTRIBUTION BED

AutoCAD SHX Text 12"

AutoCAD SHX Text 6"

AutoCAD SHX Text 12"

Sheets and Views

B. Parkin Septic and Water-LAYOUT

B. Parkin Septic and Water-LAYOUT (2)

B. Parkin Septic and Water-LAYOUT (3)

File details come from the government source that posted it. Updated Sep 17, 2026.