20
Chain‐of‐CustodyProcedures
Aftercollection, separation,identification,andpreservation,thesampleismaintainedunderchain‐of‐
custodyproceduresuntilitisinthecustodyoftheanalyticallaboratoryandhasbeenstoredor
disposed.
FieldCustodyProcedures
SamplesarecollectedasdescribedinthesiteSamplingandAnalysisPlan.Caremustbe
takentorecordpreciselythesamplelocationandtoensurethatthesamplenumberon
thelabelmatchestheChain‐of‐CustodyRecordexactly.
AChain‐of‐CustodyRecordwillbepreparedforeach
individualcoolershippedandwill
includeonlythesamplescontainedwithinthatparticularcooler.TheChain‐of‐Custody
Recordforthatcoolerwillthenbesealedinazip‐logbagand placedin thecooler prior
tosealing.Thisensuresthatthelaboratoryproperlyattributes tripblankswiththe
correctcoolerandallowsforeasiertrackingshouldacoolerbecomelostduringtransit.
Thepersonundertakingtheactualsamplinginthefieldisresponsibleforthecareand
custodyofthesamplescollecteduntiltheyareproperlytransferredordispatched.
Whenphotographsaretakenofthesamplingas
partofthedocumentationprocedure,
thenameofthephotographer,date,time,sitelocation,andsitedescriptionareentered
sequentiallyinthesitelogbookasphotosaretaken.Oncedownloadedtotheserveror
developed,theelectronicfilesorphotographic printsshallbeseriallynumbered,
correspondingtothelogbookdescriptions;
photographicprintswillbestoredinthe
projectfiles.Toidentifysamplelocationsinphotographs,aneasilyreadsignwiththe
appropriatesamplelocationnumbershouldbeincluded.
Samplelabelsshallbecompletedforeachsample,usingwaterproofinkunless
prohibitedbyweatherconditions(e.g.,alogbooknotationwouldexplain
thatapencil
wasusedtofilloutthesamplelabelifthepenwouldnotfunctioninfreezingweather.)
TransferofCustodyandShipment
SamplesareaccompaniedbyaChain‐of‐CustodyRecordForm.AChain‐of‐CustodyRecordFormmust
becompletedforeachcoolerandshouldincludeonlythesamplescontainedwithinthatcooler.
AChain‐of‐CustodyRecordFormexampleisshowninAttachmentB.Whentransferringthepossession
ofsamples,
theindividualsrelinquishingandreceivingwillsign,date,andnotethetimeontheRecord.
ThisRecorddocumentssamplecustodytransferfromthesampler,oftenthroughanotherperson,tothe
analystinthelaboratory.TheChain‐of‐CustodyRecordisfilledoutasgivenbelow:
Enterheaderinformation(CTO
number,samplers,andprojectname).
Entersamplespecificinfor mation(samplenumber,media,sampleanalysisrequiredand
analyticalmethodgraborcomposite,numberandtypeofsamplecontainers,and
date/timesamplewascollected).
Sign,date,andenterthetimeunder“Relinquishedby”entry.
Havethepersonreceivingthesample
signthe“Receivedby”entry.Ifshippingsamples
byacommoncarrier,printthecarriertobeusedandentertheair billnumberunder
“Remarks,”inthebottomrightcorner;