Upper Columbia River Project

Beach Program

www.ucr-rifs.com

N0 100 200

Feet

0 20 40

Meters

BathymetryElevation(1949Survey)1250ftAMSL

BeachesSampledin2009

BeachesSampledin2010

BeachesRejectedforLackofFineSediment

Beachesfor2011

RiverReachDelineations(USGS)

CompositeA

Composite B

Composite C

Composite D

www.ucr-rifs.com

N

CompositeE

SurfaceRejected

(MismatchedLocation)

ExpectedExposedBeach

BathmetryElevation(1949Survey)

1250ftAMSL

NOTE

Thesamplegridspacingis10meters.

ThetotalareaoftheSamplingAreais111239.8square

metersor1197375.2squarefeet.

SAMPLE LOCATIONS

CHINA BEND - ACTUAL 2010 BEACH SEDIMENT SAMPLING STATIONS

0 100 200

Feet

0 20 40

Meters

•34additionalbeachesfromthe2005programwillbesampled

•60individualsurfacesamplesperbeach(5x12design)

•5subsurfacesamples(cores)perbeachat3depthintervals.

•Sedimentsaresievedintofourgrainsizefractions

•Eachfractionisanalyzedformetals,radionuclides,pH,totalorganiccarbon(TOC)etc…

•InvitroBioaccessibilityAssaysareperformedonsurfacesediments

•IfTOCconcentrationsaregreaterthan1%samplesareanalyzedfororganics(e.g.,PCBsetc…)