J05 County Approved Design.pdf

Environmental Design, LLC. r .,,,~ Septic Design~ Wetlands~ Site Planning ~Excavati~; ·" -1/AIIM£D

901 L Street, Centralia, WA 98531 Phone: (360) 219-3343

April 22, 2019 ~ ,,,,_,,,.... •C-o

1\PPiiUVt:.

Prepared For:_ THUP,STON 80UNTY HEALTH

IHS (Pierce) _ , _ -P/ J!Jfe, BY .

4060 Wheaton Way, Suite~,-.1 E u.f2'..t.~-..z-_.__

Bremerton, WA 98310

Site Address:

10427 Mullen Road SE, Olympia

County: Thurston REVISION Tax Parcel Number: 21831111300

THURSTON COUNlY

RECEIVED

AUG 02 2019

Purpose: DEVELOPMENT SERVICES A site and soil evaluation was completed for the property located 10427 Mullen Road SE in Olympia on February 17, 2019 by Environmental Design, LLC. The purpose of the site and soil evaluation is to determine the suitability of an On-Site Wastewater system. In order to determine if a site is suitable a minimum of three test pits were dug and evaluated for suitability. The site was evaluated to determine that the slope and size were suitable and to determine if the proposed on-site wastewater would be able to meet county and Washington State WAC 246-272A regulations.

Proposal:

The client has an existing 3 bedroom and 1 bedroom residence being served by a failing septic system.

For a)l'-bedroom system the estimated wastewater produced is 600 gallons per day based on the calculation of each bedroom prod,ucing 120 gallons per day. -11,-,u- t:r a. ·"{ ~ /~ wl1Z-'"1 160.,-CvlW1· <A.fity-'~ 'L,~b 'j..,/1/()AJ;f Pf.r,19..-...I Jv ~ l ~~ Site Description: .Jo 'K ~,.. ~ ~ r'Z./~ ~,? ~ The site has a 10-15% slope in the proposed drainfield. The parcel is about 0.4 acres in size and is J?/),'1 located in Section 10 of Township 18 North of Range 01 West.

Hydrology:

The site appears to be well drained and there did not appear to be any areas of ponding in the proposed on-site wastewater locations.

Water Source:

The water source is an existing shared well connection. The well is located 100 feet away from the proposed On-Site Wastewater system to meet the requirements of WAC 246-272A.

Soil Description:

According to the Natural Resources Conservation Service (NRCS) the property soil is mapped as a Indianola Laomy Sand Series according to the U.S.D.A Natural Resources Conservation Service Soil Survey of Thurston County, Washington (1980). The test pits were not consistent with the mapped series.

Job Number: 2018-341 Client Name: Pierce

The NRCS describes the Indianola Loamy Sandy series as very deep and somewhat excessively drained soil located on terraces. In a representative profile, the surface layer is dark reddish brown loamy sand about 6 inches thick. The upper portion of the subsoil extends to a depth of 7 inches and is dark reddish brown loamy sand. The lower 12 inches of the subsoil is dark brown loamy sand. The upper portion of the substratum is dark yellowish brown sand and extends to a depth of 10 inches. The lower portion extends to a depth of 60 inches or more and is olive brown sand.

Test Pit Description:

In order to complete a site and soil evaluation according to WAC 246-272A a minimum of three test pits need to be evaluated. For this site a total of 1 test pits were evaluated and labeled in the field. The test pits are as described below:

Test Pit#1 0-50" Brown coarse sand 50-70" Brown extremely gravelly coarse sand

Not restrictive

Soil Loading Rate:

The type of soil appears to be a Type 3 with a soil loading rate of 0.8 according to WAC 246-272A.

System Requirements:

The site appears to be suitable for a pressure distribution bed system in the proposed drainfield location. The system requirements are concluded based on the suitability of the soil, the slope of the site and the site conditions.

Conclusion:

The site described as 10427 Mullen Road SE in Olympia appears to have a slope of about 5-10% in the proposed drainfield area. The site has a suitable soil depth of 70+" in the proposed drainfield location and is suitable for a pressure distribution bed system to serve the existing residences.

Report Completed by:

Becky Rieger Licensed Designer

2 Job Number: 2018-341 Client Name: Pierce

-VICINITY MAP

EXISTING DRIVEWAY

EXISTING 3 BEDROOM

RESIDENCE

EXISTING 1 BEDROOM

RESIDENCE

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+/- 50 FT

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+/-50 FT

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Environmental Design, LLC.

Septic Design • Wetlands • Mapping

901 L Street Centralia, Wa. 98531

(360) 219-3343

N ,,,.

LEGEND

J: llJB lijiil TEST PIT

& EXISTING 'wELL

.t PRll'DSEll 'wELL

~ POWER

0 STlH'

0 40 80 - -- -1" = 40 FT

APPRO'VED

THURSTON COUNT~

DATE2-llj':lj~ BY , ~

THE PROPERTY LINES IN THIS MAP ARE

APPROXIMATE AND ARE NOT INTENDED

TO BE USED AS A SURVEY.

CUENT NAME: IHS (PIERCE)

MAIUNG ADDRESS: 4060 \./HEATON \,/ A Y, SUITE E

BREMERTON, \.IA 98310

PHONE NUMBER: 360-792-1235

SITE ADDRESS: 10427 MULLEN RD SE, DL YMPIA

PARCEL NUMBER: 21831111300

PERMIT NUMBER:

DRAITTD BY: BJR JOB NUMBER: 2018-341

REVIEWED BY: BJR DATE: 07/31/2019

S-T-R: 31-18N-01E

PAGE 1 OF4

EXISTING DRIVEWAY

PROPOSED 1 Ox25 BED SYSTEMS (X3)

SEE PAGE 4 FOR DETAILS

EXISTING 3 BEDROOM

RESIDENCE

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PROPOSED PUMP CHAMBER/

SEE PAGE 3 FOR DETAIL/

PROPOSED SEPTIC TANK

SEE PAGE 3 FOR DET41LS

I I

I

EXISTING SEPTIC "fANK

TANK CAN BE RE-USED IF

TANK MEETS CURRENT CODE

AND IS WATER.'l"IGHT

SEE PAGE 3 FOR ~TAILS

I

EXISTING 1 sEbRoOM

RES}DENCE

99.0 w z :J w a..

0::

a..

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I L-...L,----------':

I I I I r

EXISTING SEPTIC TANK SHALL

BE PUMPED BY AN APPROVED

PUMPER, HAVE LID REMOVED

AND VOID FILLED '111TH SOIL

OR GRAVEL AS PER

w'AC 246-272A--,0300, Environmental Design, LLC.

Septic Design • Wetlands • Mapping

901 L Street Centralia, Wa. 98531

(360) 219-3343

LEGEND

X lfJB

N

~ TEST PIT

& EXISTING \/ELL

f>w PRIPllSED 'JELL p~

PINER

0 ST\H'

0 30 60 - -- -1" = 30 FT

APPROVED

THURSTON COUNTY flE,lL~ DATE £/,I-? h BY fl~ -

--.....:l~~

CLIENT NAME: IHS (PIERCE)

MAIUNG ADDRESS: 4060 w'HEA TON \,,/ A Y, SUITE E BREMERTON, w'A 98310

PHONE NUMBER: 360-792-1235

SITE ADDRESS: 10427 MULLEN RD SE, □L YMPIA

PARCEL NUMBER: 21831111300

PERMIT NUMBER:

DRAFTED BY: BJR JOB NUMBER: 2018-341

REVIEWED BY: BJR DATE: 07/31/2019

S-T-R: 31-18N-01E

PAGE20F4

INSTALLATION NOTE: Pump and controls must be connected to the electrical system in the uphill 3-bedroom residence. There are no available breakers in the downhill 1-bedroom residence.

CLEANOUT 24" TANK LID

CLEAN OUT

ELE.: 78.7

TO GRADE

"PVC

SEPTIC TANK INSTALLATION:

24" TANK RISER

24" TANK ADAPTER

EFFLUENT FILTER

ORENCO BIOTUBE

#f:TPS043628

- 1 /16" MESH REQUIRED

1150 GALLON SEPTIC TANK

Scale: 1" = 2'

1) EXCAVATE HOLE DEEP ENOUGH FOR THE TANK AND BACK

FILL DEPTH.

2) IF SURFACE WATER IS ENCOUNTERED DURING EXCAVATION

TANKS MUST BE SECURED TO PREVENT FLOATING. IT IS THE

RECOMMENDATION OF ENVIRONMENTAL DESIGN THAT ALL

TANKS BE SECURED ON EACH INSTALL.

3) MAKE SURE BOTTOM OF TANK HOLE IS LEVEL AND THE SOIL IS

UNDISTURBED TO PREVENT SETTLING.

4) IF THE EXCAVTION IS TOO DEEP FILL THE HOLE IN AS

NECESSARY USING PEA GRAVEL OR WASHED SAND UNTIL THE

TANK IS AT THE PROPER ELEVATION

5) TANKS SHALL BE INSTALLED TO ENSURE POSITIVE FLOW AT

ALL TIME BY INSTALLING THE INLET INVERT OF THE SUCCESSIVE

TANK A MINIMUM OF 2 INCHES BELOW THE OUTLET INVERT OF

THE PRECEEDING TANK.

6) ALL CLEANOUTS, INSPECTION AND ACCESS RISERS MUST BE

ADEQUATELY SEALED SO THEY ARE WATER TIGHT.

7) BACKFILLING _THE TANKS MUST BE COMPLETED ACCORDING

TO THE MANUFACTURER'S RECOMMENDATIONS AND SHALL NOT

DAMAGE THE TANKS.

8) SLOPE GRADE AWAY FROM RISERS.

VALVc.:

MANUFACTURER: ZOELLER

VALVc.: #30-0101 TRI-CHECK CHECK VALVc. / BALL VALVc./ UNION COMBO

INLET TEE

SPLICE BOX

ORENCO #SB4

CONDUIT TO CONTROL PANEL

RHOMBUS PANEL ~FS

TIMER SETTINGS:

1.6 MIN ON / 4 HOURS OFF TO MEET: s::::::::~r:j

GAL / DAY = 600

GAL/ DOSE= 100

REDUNDANT OFF FLOAT

LIBERTY PUMP

#f'L150

PUMP ELEV. = 72.6

GAL / MIN = 62.3

HEAD (TOH) = 51.8

1150 GALLON PUMP CHAMBER

Scale: 1" = 2'

TESTING FOR WATER TIGHTNESS:

ALL TANKS MUST BE TESTED FOR WATER-TIGHTNESS AT THE

CONSTRUCTION SITE AND BE INSPECTED BY THE INSTALLER.

DESIGNER AND/OR THE LOCAL HEALTH OFFICER.

TO TEST FOR WATER TIGHTNESS:

1) SEAL THE EMPTY TANK

2) SEALALLACCESS OPENINGS, RISERS, INLET AND OUTLET

PIPES.

3) FILL THE EMPTY TANK WITH WATER UNTIL THE WATER IS 2

INCHES ABOVE THE RISER CONNECTION POINT.

4) LET THE TANK SIT FOR 1 HOUR.

5) IF THERE IS A MEASUREABLE DROP IN THE WATER ELEVATION·

REFILL THE TANK AND LET THE TANK STAND FOR ANOTHER

HOUR.

6) CHECK AROUND THE TANK TO LOOK FOR AREAS OF LEAKAGE.

7) THE TANK WILL PASS THE WATER-TIGHTNESS TEST WHEN THE

WATER LEVEL IS HELD FOR 1 HOUR WITH OUT ANY

MEASUREABLE LOSS.

8) IF REPAIRS HAVE TO BE MADE THE TANK WILL NEED TO BE

RETESTED AND INSPECTED BY THE INSTALLER, DESIGNER,

AND/OR LOCAL HEALTH OFFICER.

Environmental Design, LLC.

Septic Design • Wetlands • Mapping

901 L Street Centralia, Wa. 98531

(360) 219-3343

APPROVED

THURSTON COUNTY HEAL:

DATEcfU~//q_ BY /1, - r--

ALL TANKS MUST BE TESTED FOR

\./ATER TIGHTNESS DUE TO PROXIMITY

TO OPEN \./ATER,

EXISTING SEPTIC TANK SHALL BE

\ti ATER TESTED IF TO BE REUSED, IF

EXISTING TANK IS TO BE ABANDONED

THAN THE TANK SHALL BE

PUMPED BY AN APPROVED PUMPER,

HAVE LID REMOVED AND VOID FILLED

\./ITH SOIL OR GRAVEL AS PER

\t/AC 246-272A-0300, INST ALLER• PLEASE CALL

ENVIRONMENTAL DESIGN

REGARDING ANY QUESTIONS, CHANGES

OR CONCERNS,

PLEASE CALL BEFORE COVERING FOR

SCHEDULING OF A FINAL INSPECTION,

CUENT NAME: IHS (PIERCE)

MAILING ADDRESS: 4060 \t/HEA TON \,/ A Y, SUITE E BREMERTON, \t/A 98310

PHONE NUMBER: 360-792-1235

SITE ADDRESS: 10427 MULLEN RD SE, □L YMPIA

PARCEL NUMBER: 21831111300

PERMIT NUMBER:

DRAFTED BY: BJR JOB NUMBER: 2018-341

REVIEWED BY: BJR DATE: 07/31/2019

S-T-R: 31-18N-01E

PAGE 3 OF4

NATIVE GRADE

' . . ---xt-'f'U~~'§'")=r--~--6':.,;i~~"'t~>, ,'4, . <

~C;.-;~7,~)~'>.;:::,_,.,,,()6~-r)i. .... ,· .. ~-;,.,,...,.-.,.cc;":,, .. ~!ERA~- -- -s-:f..,S:..r 1-----"ILU===,:-_, -~~;&-~?~d,.S~:· .S:?_,g_,,S,,{,-l,..$f-~-~~, .. \-';,,J_-::- .J~- ...x .)s.:,',_1<'.-,it: ,:;d.CJ_';J-_ '57'>1....L~~ ,<.')(

7.

I•

DEPTH OF BACKALL

COVER SOIL

TYPE: LOAM

cu ms - g lRENCH DEPTH

I • DRAINROCK

3/4 - 2 1/2'

WASHED GRAVEL

CUYDS=B

DEPTH OF

3 • C-33 SAND

CU YOS ~ 27

VERTICAL

I • SEPARATION

1---------------------25••--------------------I

CLEAN-OUT/ACCESS

PORT DETAIL

I'

2.50'

1.25'

4 LATERALS AT 2:S fEET ts• SCHD 40 PVC

75 fEET H!llllf1JLD

IS' SCHD 40 PVC

TOR PORT

ORIFICES•

SIID ltB•

Q\JANTlY• 12

SPACING, 24•

LOCATIONi TOP

CLEANOUTS / MONITOR PORT

Environmental Design, LLC.

Septic Design • Wetlands• Mapping

901 LStreet Centralia, Wa. 98531

APP~~ED

THURSTON COUfHY HEALTH D,~TE c/ l:r/19 BY .iAM/

JJ~

LATERAL INLET ELEVATIONS

BED 1 (NORTHERN) = 99.2

BED 2 (MIDDLE) = 97.2

BED 3 (SOUTHERN) = 95.7

INSTALLER, PLEASE CALL

ENVIRONMENT AL DESIGN

REGARDING ANY GUESTJDNS, CHANGES

DR CONCERNS,

PLEASE CALL BEFORE COVERING FDR

SCHEDULING DF A FINAL INSPECTIDN,

WENT IWIE: !HS <PIERCE>

MAIUNG ADDRESS: 4060 WHEA TDN WAY, SUITE E

BREMERTON, WA 98310

PHONE NUMBER: 360-792-1235

SITT ADDRESS: 10427 MULLEN RD SE, DL YMPIA

PARCEL NUMBER:21831111300

PERMIT NUMBER:

DRAFTED BY: BJR JOB NUMB6!: 2018-341

REVIEWED BY: BJR DAlc:07/31/2019

5-T-R: 31-18N-01E

PAGE4 Of 4

NATIVE GRADE

7 I

VALVE BOX

ONG SWEEP ELBOW

ATERAL

CLEAN-OUT/ACCESS

PORT DETAIL

10'

DEPTH OF BACKALL

1 • COVER SOIL

TYPE: LOAM

CU VOS= g

DEPTH OF"

3 • C-33 SAND

CU YDS = 27

VERTICAL

1 • SEPARATION

l-------------------2s·------------------1

2.50'

1.25'

VALVES INSTALLED

AT EACH LATERAL

ORIFICES•

SIZE• 1/8'

QUANTIY• 12

SPACING• 24'

LOCA TION1 T□P

hl(_--------------23•----------------1

7,5 FEET MANIFOLD

1,S• SCHD 40 PVC

ONITDR PORT

CLEANOUTS I MONITOR PORT

En,,ironrr, SepLic .D. . enta/ Design ,_

'i!Srg,z • 'lfTeL/antfs • , Le.

C 9 0J L Street ~qPPing entra//a, Wa. 98531 .

(360) 219-3343

CUENT NAME: IHS (PIERCE)

MAIUNG ADDRESS: 4060 \./HEA

BREMERTON TO\./NA \./AY, SUITE E

' 98310

PHONE NUMBER· 360 ?

' - 92-1235

SITE ADDRESS: 10427 MUL

LEN RD SE 0

PARCEL NUMBER· 218311 ' l YMPI4

· 11300

PERMIT NUMBER: S-T-R: 3J-l8N -01t ec't..\on for a Pressurized System - Single Family Residence Pro1 ..

_ P\ERC'£

e l"',.sse-.nb1y S,ze 2._QQ inches art.Length "'185 feet sport. Pipe c,ass 40 2_00 inches nspo"-Line Siz.e None

,stnbu\ing Valve 1'ftodel

26.6 feet tlf\aX E.\e"8\io11 Litt 24 feet

\\l\anito\d Length

\11\anito\d Pipe Class

1.50 inches

Manito1d Pipe Size . 1"1urnbef" of Laterals per Cell 12

Latera1 Length 23 fe_et

Lateral Pipe Class

1.50 inches

Lateral Pipe-Size ,1/8 inches "i onficeSize Cl)

Orifice spacing 2 feet !:!:.

5 feet :c

Residual Head None inches

Q

Flow Meter I-

'A.dd-on' friction Losses 0 feet TS l3 ::c calculations u

;nimum Flow Rate per Orifice 0.43 gpm E ca 144 C

Number of Orifices per Zone >a

Total F\oW Rate per Zone 62,3 gpm Q

Number of Laterals per Zone _ 12 s % Flow Differential 1st/Last Orifice 0.2 % {!.

Transport Velocity 5.9 fps

Frictional Head Losses

LOSS through Discharge 7.8 feet

Loss in Transport 11.1 feet

LOSS through Valve 0,0 feet

Loss in Manifold 1.3 feet

Loss in Laterals 0.0 feet

Loss through Flowmeter 0.0 feet

'Add-on' Friction Losses 0.0 feet

Piee Volumes

Vol of Transport Line 32,2 gals

Vol of Manifold 2.5 gals Net Discharge (gpm) Vol of Laterals per Zone 29.2

Total Volume 63.9

Minimum Pump Requirements

Design Flow Rate Total Dynamic Head

.Orenco ·s,atem.

·lnco,porated

,CJ.,,,,,ging,J,,W,,_,,J,, U:i,,U o,,; If'..,,,,.,.,, 62,3 51.B gals gals

PumpData gpm feet

Legend

System Curve:-

Pump Curve:-

Pump Optimal Range

Operating PointQ

Design PointQ

. .. r- .;f

Dua/Sized Discharg_e

• • ' • ti • • •

1...---------'· · 1-1/211 or.2'_'

L 150-Series echnical Specifications

External Construction:

Pump Volute- Gray iron casting class 25 Pump Legs - Gray iron casting class 25 Motor Cover- Gray iron casting class 25 All casting shall be powder coated for corrosion resistance prior to assembly.

Motor:

Submersible 3450 RPM, oil filled and hennetically sealed.

Class B insulation rating. FL 150, 303 stainless steel rotor shaft. Thennally protected - single phase models. Three phase models shall have overloads incorporated into the control panel, properly sized for the horsepower and amperage of the pump.

Impeller:

Semi-open design. Cast iron construction.

Dual Shaft Seals:

FL 150-Series feature upper unitized silicon carbide, lower Viton double lip.

Models hp. Volts Phase Amps

FL152M-2 1-1/2 208-230 1 15

FL152A-2 1-1/2 208-230 1 15

FL153M-2 1-1/2 208/230 3 11.4

FL154M-2 1-1/2 440-480 3 5.7

FL155M-2 1-1/2 575 3 4.9

F.-~ ~ All fasteners shall be 300-series stair..

Power Cord: "'"" 25' length standard. Quick-disconnect design easy field replacement. (35' and 50' available o~

Level Control: ~ The pump shall be controlled by a wide angle mechanical float sealed in a PVC housing. The float shall have a series plug for manual by-pass operation.

A water-stop seal shall be incorporated into the cord entry to eliminate potential water wicking into the switch.

An adjustable clamp is provided for optional pipe mounting of the float.

Discharge:

2" FNPTwith 1-1/2" FNPT cast iron flange provided.

Maximum Fluid Temperature:

104° F (40° C) Continuous Duty 140°F (60° C) lntennittent

Discharge Automatic Cord Length Wgt.Lbs.

1-1/2" &2" No 25' 81 1-1/2" &2" Yes 25' 82 1-1/2" &2" No 25' 81 1-1/2" &2" No 25' 81 1-1/2" &2" No 25' 81

NOTE: 3-phase models require a control panel for automatic operation. See control panel literature for complete specifications on panels. 35' and 50' cord options available on 3-phase models. Add "-3" suffix or "-5" suffix to model number. Example: FL 153M-3 for 35' cord, FL 153M-5 for 50' cord.

60 hz Performance Cu,ve FL 150-Series

76 151 r--, Liters Per Minute 227 303 379

FL150

1-......., f--

' "'I\.. - ' 0

0 10 20 30 40 50 60 70 80 90 100 110 120 130 F10wlGPMI

181/4"

11 3/4"'

Certified

Specifications subject to change without notice.

Liberty Pumps • 7000 Apple Tree Avenue • Bergen, New York 14416 • Phone 800-543-2550 Fax (585) 494-1839 www.libertypumps.com Copyright© Liberty Pumps, Inc. 2011

All rights reserved. WT6770-R10/17