NYC 9/11 Public Portal Document
TESTING (ELPAT) PROGRAM
ENVIRONMENTAL LEAD PROFICIENCY ANALYTICAL
INDIVIDUAL LABORATORY REPORT FOR ROUND 021 ,--,
LAB 1D=07054 DECEMBER 16, 1997
ATC ASSOCIATES, INC. NY, NEW YORK, NY 10010
-
REPORTED REFERENCE ACCEPTABLE RANGE LAS a Z b
=-' SAMPLE
RESULTS VALUES • LOWER UP(F.R PERFORMANCE SCORE
SAMPLE TYPE N0. ----------------------------.. ._
0.864 (._ti:g A 0.39
Paint Cnips (X) 1 1.0833 1.0578
0.0452 0.0328 0.057h o 0.11
2 0.0459
7.756 6.6414 4.5218 8.7609 1.58
3
0.4999 0.5141 0.395 0.6332 A -0.36
4
459.6 463.5 387.3 539.7 A -0.15
soi l (mg/kg) 1
2 846.9 830.8 675.6 985.9 A 0.31
3 78.8 69.2 46.5 91.8 A 1.28
342.4 347.2 262.2 432.3 A -0.17
4
270.3 269.5319 198.4 340.7 A 0.03
Dust Wipes (ug) 1
159.5374 111.5 207.5 A 0.7.'1
2 163.8
80.6 79.2462 53.9 1C4.f A r1.16
3
735.3033 592,3 ?T'.8 a -'.64
• 4 704.9
laboratories
Reference value is the mean of the reference
standard deviations
X Upper limit: reference value + 3
deviations
Lower limit: reference value - 3 standard
G A: Analysis acceptable; Results not reported
-:
lower limit, not acceptable
H: Results > upper limit, L: Results <
(reported result -reference value)/standard deviation
b Z Score =
Is based on z-scores.
Note: the acceptablity of reported results
acceptable according to
This is why a reported result may appear
outlier.
performance limits, but be identified as an
LABORATORY YEAR-TO-DATE PERFORMANCE REPORT
LAB ID=07054
ROUND * ACCUMULATED PERFORMANCE PROFICIENCY
ROUND
PERFORMANCE 4 ROUNDS(%) 2 ROUNDS(--) RATING
SAMPLE TYPE NO.
---------------------------------------------------------
Paint Chips (X) 018 4/4
019 4/4
020 4/4
4/4 16/16 100 8/8 100 P
021
Soil (mg/kg) 020 4/4
4/4 8/8 100 8/8 100 P
021
018 4/4
Dust Wipes (ug)
019 4/4
020 4/4 P
4/4 16/16 100 8/8 100
021
of total samples analyzed.
' The denominators represent the number
number of acceptable results.
The numerators represent the
NP: Nonproficient Not Rated
# P : Proficient -:
over four rounds
Performance ratings are based on accumulated results
paint chips, soi l , or dust
(one year). A lab's performance in ground
if: 1) three-fourths (75X) or more of the
wipes is rated proficient (P),
or 2) for the last
accumulated results over four rounds are acceptable
rounds, all samples are analyzed and the results are 100 X acceptable.
two
NYC-WTC 000095475
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