NYC 9/11 Public Portal Document
ENVIRONMENTAL LEAD PROFICIENCY ANALYTICAL TESTING (ELPAT) PROGRAM
INDIVIDUAL LABORATORY REPORT FOR ROUND 021 -•
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LAB IDa07054 DECEMBER 16, 1997
ATC ASSOCIATES, INC. NY, NEW YORK, NY 10010
SAMPLE REPORTED REFERENCE ACCEPTABLI RANGE # I.AB 2 2&
SAMPLE TYPE NO. RESULTS VALUES * LOWER UPPER PERFORMANCE SCORE
1.0833 1.0578 0.864 1.2516 A 0.39
Paint Chips (%) 1
2 0.0459 0.0452 0.0328 0.05T9 A 0.17
3 7.756 6.6414 4.5218 8.7609 A 1.58
4 0.4999 0.5141 0.395 0.6332 A -0.36
1 459.6 663.5 387.3 539.7 A -0.15
Soil (mg/kg)
2 846.9 830.8 675.6 985.9 A 0.31
3 78.8 69.2 46.5 91.8 A 1.28
4 342.4 347.2 262.2 432.3 A -0.17
Dust Wipes (ug) 1 270.3 269.5319 198.4 340.7 A 0.03
2 163.8 159.5374 111.5 207.5 A 0.27
• 3 80.6 79.2462 53.9 104.6 A 0.16
4 704.9 735.3033 592,8 877.8 A
* Reference value is the mean of the reference laboratories
# Upper limit: reference value + 3 standard deviations
Lower Limit: reference value - 3 standard deviations
a A: Analysis acceptable; Results not reported
-:
H: Results > upper Limit, L: Results < lower limit, not acceptable
& 2 Score = (reported result-reference value)/standard deviation
Note: the acceptabLity of reported results is based on z-scores.
This is why a reported result may appear acceptable according to
performance limits, but be identified as an outlier.
LABORATORY YEAR-TO-DATE PERFORMANCE REPORT
LAB I0=07054
ROUND ROUND * ACCUMULATED PERFORMANCE PROFICIENCY
NO. PERFORMANCE 4 ROUNDS(%) 2 ROUNDS( ) RATING ill
SAMPLE TYPE
------------------------------------------------------------------------------------
Paint Chips (%) 018 4/4
019 4/4
020 4/4
021 4/4 16/16 100 8/8 100 P
Soil (mg/kg) 020 4/4
021 4/4 8/8 100 8/8 100 P
Dust Wipes (ug) 018 4/4
019 4/4
020 4/4
021 4/4 16/16 100 8/8 100 P
analyzed.
* The denominators represent the number of total samples
The numerators represent the number of acceptable results.
# P : Proficient NP: Nonproficient Not Rated -:
Performance ratings are based on accumulated results over four rounds
(one year). A Lab's performance in ground paint chips, soil, or dust
wipes is rated proficient (P), if: 1) three-fourths (75%) or more of the
accumulated results over four rounds are acceptable or 2) for the Last
acceptable.
two rounds, all samples are analyzed and the results are 100 %
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