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Site-Specific Health and Safety Plan (HASP) - Laschools.org

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Table 8-2 Flagging Conventions for Data Evaluation <strong>and</strong> Validation of In<strong>org</strong>anic <strong>and</strong> Wet Chemistry Methods<br />

LAUSD, South Gate, California<br />

Quality Control Check<br />

MS/MSD Continued<br />

Evaluation Flag Samples Affected<br />

When sample conc. is control limit J-positive results<br />

Affected compound in native<br />

No qualification for non-detects sample MS/MSD<br />

Serial Dilution (ICP Only) If concentration is > 50 times MDL <strong>and</strong> % J positive results<br />

All samples in digestion batch if<br />

MSA<br />

difference > control limit<br />

UJ non-detects<br />

analytical spike not performed<br />

k/ (GFAA Only) MSA not done<br />

J positive results<br />

No qualification for non-detects<br />

Sample only<br />

MSA spike levels inappropriate<br />

J positive results<br />

No qualification for non-detects<br />

Sample only<br />

r ≤0.995<br />

J positive results<br />

No qualification for non-detects<br />

Sample only<br />

Field duplicates RPD > 35% water or soil Discuss in data quality assessment<br />

report<br />

Field duplicate pair<br />

a/ UCL = Upper control limit. j/ CCB = Continuing calibration blank.<br />

b/ LCL = Lower control limit k/ MSA = Method of st<strong>and</strong>ard addition.<br />

c/ ICV = Initial calibration verification.<br />

d/ CCV = Continuing calibration verification.<br />

e/ %R = Percent recovery.<br />

f/ Exceptions occur when the historical control limits are below or above the maximum/minimum %R value. When this occurs, the historical control limit<br />

takes precedence. Data are qualified as unusable only after the historical control limit is exceeded.<br />

g/ RPD = Relative percent difference.<br />

h/ MB = Method blank.<br />

i/ ICB = Initial calibration blank.<br />

K:\Depts\Dept48\LAUSD\MSA WORK\Soil Investigation\OU 1 RAP\Appendix\Appendix H - QAPP\Tables.doc<br />

5/7/2008<br />

327

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