I UNITED STATES ENVIRONMENTAL PROTECTION AGENCYREGION HI '_

V*tii rtrt̂ CENTRAL REGIONAL LABORATORYftRO 839 BESTGATE ROAD

ANNAPOLIS, MARYLAND 21401(301) 266-9160 -

January 30, 1989 " !

SUBJECT- Inorganic Data Validation for the Delta Quarries Site

FROM : Theresa A. SimpsonRegion III Acting ESAT DPO (3ES23)

TO : Donna McCartneyRegional Project Manager (3HW12)

THRU : Pat Krantz ̂ %yChief, QA Section (3ES23)

Attached is the inorganic data review for the Delta Quarries Site{Case.10588) completed by the Region III Environmental ServicesAssistance Team (ESAT) contractor under the direction of Region IIIESD.

If you have questions regarding this review, please.call me.

Attachment

cc: Mark diFeliciantonio, COM (w/attachments)Elaine Spiewak (3HW10) (w/o attachments)File: TID 03881002 Task #1384

HR3Q1G69

256SA RIVA ROADSUITE 300ANNAPOLIS. MD 21401PHONE: 301 -266-9887

MANAGES ̂ /̂ Gc9GN6>&CQNSU.TANTS

DATE: January 24, 1989.*SUBJECT: INORGANIC DATA VALIDATION, CASE

SITE: DELTA QUARRIESFROM: MAHBOOBEH

ESAT SENIOR INORGANIC DATA REVIEWER

TO: TERRY SIMPSONACTING ESAT DEPUTY PROJECT OFFICER

THRU: CHARLES MATKOVICH , ̂ESAT TEAM MANAGER w

OVERVIEW

The set of samples for Case 10588 contained three (3)soil samples, which were analyzed through the ContractLaboratory Program (CLP) Routine Analytical Services.The sample set contained one (1) field duplicate pair.

All analytes were successfully analyzed in all samples,Areas of concern with respect to data usability arelisted according to the seriousness of , the problem.These include:

HINOR ISSUES

The field duplicate had results outside of the controllimits (RPD >35%) for the Al, As, Cr, Pb, Mn and Aganalytes. Therefore, the reported results for theseanalytes in the samples have been qualified estimated,» j".

The laboratory duplicate had a result outside of thecontrol limit (RPD >35%) for the Pb analyte.Therefore, .the reported results for the Pb analyte inthe samples have been qualified estimated, "J".

The percent differences (%D) of the serial dilutionwere greater than the 10% limit for the Al, Fe and Mnanalytes. Therefore, the reported results for theseanalytes in the samples have been qualified estimated"J".

AR3Q1070

NOTES

Page 2 of 3

The Sb analyte is not present in the EPA providedinterference check sample (ICS) solution but had aresult > IDL. The reported results for Sb in the .samples which were < 5X the ICS concentration may havebeen affected (biased high), however, they will bequalified estimated "J", as will be address below.

The matrix spike recovery was extremely lowand the ICS had a reported result "V IDL for the Sbanalyte; resulting in opposing effects (biasesextremely low and high). Therefore, the reportedresults for the Sb analyte in the samples have beenqualified estimated "J".

The correlation coefficient from the method of standardaddition (MSA) was

Page 3 of 3

REGARDING REPORT CONTEN

Table XA is a summary of qualifiers added to thelaboratory '-s results during evaluation.

TABLE 1A SUMMARY OF QUALIFIERS ON DATA SUMMARY AFTERDATA VALIDATION

TABLE IB CODES USED IN COMMENTS COLUMN

TABLE 2 GLOSSARY OF DATA QUALIFIER CODES

TABLE 3 DATA SUMMARY FORM

APPENDIX A RESULTS REPORTED BY LABORATORYFORM I

APPENDIX B DPO REPORT

APPENDIX C SUPPORT DOCUMENTATION

6R301072.

" TABLE 1A

SUMMARY OP QUALIFIERS ON DATA SUMMARYAFTER DATA VALIDATION

. NON-, - POSITIVE DETECTED

ANALYTE . 'SAMPLES AFFECTED VALUES VALUES BIAS COMMENTS*

Al All samples J A (39%)B (11%)

Sb J CD (384 ppb)E (-40%)

AS MCX953; MCX959 J A (43%)F (152%)

MCX957 J A (43%)F (152%)G

Ba All samples K High F (126%)

Cd All samples K High F (126%)

Cr All samples J A (40%)

Fe All samples - J B (13%)

Pb All filtered J A (56%)H (46%)

Mn All samples J A (37%)B (4660%)F (464%)

Ni A.11 samples • --k _ _ s. High . F (144%)

',* See explanation of comments in Table IB

&R3QSQ73

• " TABLE 1A CONT.

SUMMARY OP QUALIFIERS ON DATA SUMMARYAFTER DATA VALIDATION

NON-TOSITIVE DETECTED

S AFFECTED VALUES VALUES BIAS COMMENTS*

MCX957; MCX958 UL Low I (63%)

MCX959 UL Low I (63%)J (40%)

Ag All samples J A (48%)* F (144%)

Zn All samples K " High F (134%)

* See explanation of comments in Table IB

TABLE IB

; CODES USED IN COMMENTS COLUMN

A = The field duplicate result was outside the control limit,RPD >35%, (relative percent difference in parentheses).Therefore, the reported results are estimated*

B = The percent difference (%D) of the serial dilution wasgreater than the 10% limit (%D in parentheses) . Therefore,the reported results are estimated.

C = The ICS solution result was > IDL, and the matrixspike recovery was extremely low; resulting in opposingeffect (biased high and extremely low). Therefore, thereported results are estimated.

D = The analyte is not present in the EPA provided ICSsolution, but had a positive result of > IDL. The reportedresults which are < 5X the ICS may be biased high.

E = Due to an extremely low (

TABLE 2

GLOSSARY OF DATA QUALIFIER CODES (INORGANIC)

CODES RELATED TO IDENTIFICATION(confidence concerning presence or absence of analytes):

U «« Not detected. The associated number indicatesapproximate sample concentration necessary to bedetected.

(NO CODE) «• Confirmed identification.

B •« Not detected substantially above the level reportedin laboratory or field blanks.

R = Unreliable result. Analyte may or may not bepresent in the sample. Supporting data necessaryto confirm result.

CODES RELATED TO QUANTITATIQN(can be used for both positive results and sample guantitationlimits):

J = Analyte Present. Reported value may not beaccurate or precise.

K « Analyte present. Reported value may be biasedhigh. Actual value is expected to be lower.

L — Analyte present. Reported value may be biased low.Actual value is expected to be higher.

[] «-Analyte present. As values approach, the IDL theguantitation may not be accurate.

XJJ «« Not detected, guantitation limit may be inaccurateor imprecise.

UL ̂ Not detected, guantitation limit, is probablyhigher. . ," , . . ;, _

OTHER CODES /... - ™~, =.--.--. ...,,„_._-, , _ .,„.-.

Q — No analytical result.

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APPENDIX A

RESULTS REPORTED BY LABORATORY

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Page 2 of 5

DPO ISSUE

1. The SOW 7/85 specifies that analytical results must bereported to two significant figures if the result value isless than 100. The laboratory reported several values on theForm I not implementing this rule. See Appendix C, p. 4.

r* " * - - • - .---""" •' •

2. The laboratory inccorectly calculated the correlationcoefficient of the MSA for the As analyte-in sample MCX957.See Appendix C, p. 5.

Page 3 of 5

APPENDIX C

SUPPORT DOCUMENTATION

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2 - 15 . ... .• . •Amend. One