NYC 9/11 Public Portal Document
024AT) PROGRAM
ENVIRONMENTAL ~ PROFICIENCY ANALYTICAL FORTESTING
R
INDIVIDUAL LABORATORY
07054 SEPTEMBER 23, 1998
LAS
INC., NEW YORK, NY 10010
ATC AStOC RTES
ACCEPTABLE RANGE # LAB m Z &
SAMPLE REPORTED REFERENCE
LOWER UPPER PERFORMANCE SCORE
VALUES
SAMPLE TYPE N0 . RESULTS - --------•------------------
,.
_._..-. - ------ --------
0.5812 0.5052 A -1.57
0.6582 0.7432
0.1492 0.2762 A -1.77
(1.1752 0.2127
0.0524 0.037 .,162 A -0.29
3 0.051
3.3834 2.6436 4.1232 A •0.58
4 3.2413
354 527.2 A -1.38
1 400.7 440.6
Soil (mg/kg) 545.3 827.4 A -1.28
626.1 696.3
651.2 990.5 A -1.91
3 713.1 820.9
13.1 55.3 A 0.81
39.9 34.2
37.5 78.2 A 0.02
58 57.8355
Oust Wipes (ug) 884 1370.2 A -0.98
2 1047.3 1127.0581
128.3887 93.4 163.4 A -0. 11
3 127.1
326 477.8 A -1.86
4 354.8 401.8589
the reference laboratories
• Reference value is the mean of
standard deviations
# Upper limit: reference value + 3
standard deviations
Lower limit: reference value - 3
Analysis acceptable; -: Results not reported
i A:
Results < lower Limit, not acceptable
H: Results > upper Limit, L:
result-reference value)/standard deviation
& Z Score = (reported
results is based an z-scores.
Note: the accepcablity of reported
appear acceptable according to
This is why a reported result may
an outlier.
performance Limits, but be identified as
LABORATORY YEAR-TO-DATE PERFORMANCE REPORT
LAS 10=07054
ACCUMULATED PERFORMANCE PROFICIENCY
ROUND ROUND-•
4 ROUNDS(%) 2 ROUNDS(..) RATING
SAMPLE TYPE NO. PERFORMANCE
021 4/4
Paint Chips (X)
022 4/4
023 4/4
4/4 16/16 100 8/8 100 P
024
021 4/4
Soil (mg/kg)
022 4/4
023 4/4
16/16 100 8/8 100 P
024 4/4
021 4/4
Dust Wipes (ug)
022 4/4
023 4/4
024 4/4 16/16 100 8/8 100 P
number of total samples analyzed.
The denominators represent the
represent the number of acceptable results.
The numerators Not Rated
P : Proficient NP: Nonproficient
accumulated results over four rounds
Performance ratings .abased on
in ground paint chips, soil, or dust
(one year). A lab's er ormance
(P), if: 1) three-fourths (753.) or more of the
wipes is rated profici nt
rounds are acceptable or 2) for the last
accumulated results over four
rounds, all samples are analyzed and the results are 100 % acceptable.
two
NYC-WTC 000121735
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