NYC 9/11 Public Portal Document
TESTING (ELPAT) PROGRAM
ENVIRONMENTAL LEAD PROFICIENCY ANALYTICAL
INDIVIDUAL LABORATORY REPORT FOR ROUND 021 ~;•„
LAB ID=07054 DECEMBER 16, 1997
ATC ASSOCIATES, INC. NY, NEW MURK, NY 10010
REFERENCE ACCEPTABLI RANGE : LAB a Z&
SAMPLE REPORTED PERFORMANCE SCORE
VALUES * - LOWER UPPER
SAMPLE TYPE NO. RESULTS
------------------------
1.0578 0.864 A 0.39
Paint Cnips (X)- 1 1.L'53
0.0452 0.0328 0.05Th a 0.11
2 0.0459
6.6414 4.5218 8.7609 1.58
3 7.756
0.5141 0.395 0.6332 A -0.36
4 0.4999
463.5 387.3 539.7 A -0.15
Soi l (mg/kg) 1 459.6
830.8 675.6 985.9 A 0.31
2 846.9
69.2 46.5 91.8 A 1.28
3 78.8
347.2 262.2 432.3 A -0.17
4 342.4
269.5319 198.4 340.7 A 0.03
Dust Wipes (ug) 1 270.3
159.5374 111.5 207.5 A 0.2-1
2 163.8
3 80.6 79.2462 53.9
+Cy -F A 0.16
735.3033 592.8 ?77.0 A _64
• 4 704.9
the reference laboratories
* Reference value is the mean of
reference value + 3 standard deviations
>Y Upper limit:
reference value - 3 standard deviations
Lower limit:
A: Analysis acceptable; -: Results not reported
< Lower limit, not acceptable
H: Results > upper limit, L: Results value)/standard
result -reference deviation
3 Z Score = (reported
acceptablity of reported results is based on z-scores.
Note: the
appear acceptable according to
This is why a reported result may
performance Limits, but be identified as an outlier.
-----------
LABORATORY TEAR-TO-DATE PERFORMANCE REPORT
LAB 10=07054
ACCUMULATED PERFORMANCE PROFICIENCY
• ROUND ROUND '
2 ROUNDS(%) RATING
SAMPLE TYPE NO. PERFORMANCE 4 ROUNDS(%)
-------------------------------------------------
018 4/4
Paint Chips (%)
019 4/4
020 4/4
4/4 16/16 100 8/8 100 P
021
020 4/4
Soil (mg/kg) 100 8/8 100 P
021 4/4 8/8
018 4/4
Dust Wipes (ug)
019 4/4
020 4/4
16/16 100 8/8 100 P
021 4/4
number of total samples analyzed.
* The denominators represent the
the number of acceptable results.
The numerators represent -: Not Rated
Proficient NP: Nonproficient
P : results over four rounds
Performance ratings are based on accumulated
ground paint chips, soil, or dust
(one year). A lab's performance in
(P), if: 1) three-fourths (75%) or more of the
wipes is rated proficient
rounds are acceptable or 2) for the last
accumulated results over four
rounds, all samples are analyzed and the results are 100 Z acceptable.
two
NYC-WTC 000120986
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