SOUTH MAGNOLIA BASIN COMBINED SEWER OVERFLOW CONTROL FACILITY ENGINEERING REPORT APPENDICES

DRAFT December 2010 pw:\\Carollo\Documents\Client\WA\King County\7562A10\Magnolia Basin\Facilities Plan\Appendix_Cvrs.docx

Appendix A

PRELIMINARY GEOLOGIC/GEOTECHNICAL EVALUATION OF SOUTH MAGNOLIA CSO ALTERNATIVES

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Qpf

Qva

Qvt

Qvt

Qpf

Qvr

Qvt

Qvlc

Qpf

Qvt

Qtf

Qvlc

QfCSO Control MH

29th

Ave

30th

Ave

32nd

Ave

28th

Ave

36th

Ave

31stA

ve

35th

Ave

Pe rkinsLn

24th

Ave

21stA

ve

Magnol iaBlvd

EmersonSt

HoweSt

33rd

Ave

DravusSt

42nd

Ave

Gi lmanAve

McGrawSt

25th

Ave

Gar fieldSt

BarrettSt

MarinaPl

27th

Ave

39th

Ave

ThurmanSt

LynnSt

ArmourSt

View

mont

Way

43rdAve

44th

Ave

ConstanceDr

ElmoreSt

OaksSt20

thAv

e

BostonSt

ManorPl

NewtonSt

Wes

t View

mont

Way

Clise

Pl

Wil l i

amsA

ve

23rd

Ave

40th

Ave

38th

Ave

CrockettSt

CondonWay

37th

Ave

22nd

Ave

EmersonPl

34th

Ave

WestmontWay

MontavistaPl

26th

Ave

26th

Pl

Cran

eDr

Ea tonSt

Pied

mont

Pl

Arap

ahoe

Pl

EyersPl

Ti ldenSt25thPl

ProsperSt

BlaineSt

28thP

l Gi lmanPl

CrestmontPlEdgemontPl

GalerSt

BurtonPl

Al tavistaPl

41stA

ve

McLarenStRuffnerSt

Patte

nPl

RayeSt

45thA

ve

GroverSt

EastmontW

ay

SmithSt

16th

Ave

Be rtonaSt

Bish

opPl

Ful tonSt

Unnamed

Wolf

ePl

Rober tsWayHayesSt

Amhe

rstPl

MansellSt

ElmorePl

Hal ladaySt

Magn

oliaL

n

WheelerSt

38th

Ave

Pe rkinsLn

RayeSt

BarrettSt

RayeS

t

HayesSt

Magnol iaBlvd Gar fieldSt

RuffnerSt

BertonaSt

35thAve

BlaineSt

40th

Ave

26th

Ave

37th

AveBe rtonaSt

EmersonSt

RayeSt

GalerSt

ArmourSt

DravusSt

21stA

ve

BlaineSt

26th

Ave

20th

Ave

31stAve

21stA

ve

McGrawSt

23rd

Ave

SmithSt

Ti ldenSt

DravusSt

28th

Pl

Ful tonSt

22nd

Ave

27th

Ave

36th

Ave

SmithStSmithSt

BertonaSt

39th

Ave

43rd

Ave

25th

Ave

25th

Ave

ArmourSt

ElmoreSt

GroverSt

EmersonSt

BarrettSt

LynnSt

23rd

Ave

Ba rrettSt

ArmourSt

RuffnerSt

RuffnerSt

BertonaSt

0 1,400700Feet

µCarollo Engineers

Magnolia CSO

MAGNOLIA BASINGEOLOGY

FIG. 3.5November 2010 21-1-20698-040

NOTE - Geology by GeoMap Northwest at the University of Washington.

QtfQvr Qvlc

Qvt

QvaTidalflat DepositsRecessional Outwash Deposits

Lawton Clay Member of the Vashon Drift

Vashon Till

Vashon Advance Outwash

Stippled Area is Covered with Mass-Wastage Deposits

Qpf Pre-Vashon Deposits

LEGEND