NYC 9/11 Public Portal Document
(ELPAT) PROGRAM
ENVIRONMENTAL LEAD PROFICIENCY ANALYTICAL TESTING
INDIVIDUAL LABORATORY REPORT FOR ROUND 022
LAB ID=07054 MARCH 18, 1998
ATC ASSOCIATES, INC. NY, NEW YORK, NY 10010
REFERENCE ACCEPTABLE RANGE # LAB 2 Z &
SAMPLE REPORTED
RESULTS VALUES ' LOWER UPPER PERFORMANCE SCORE
SAM LE TYPE NO.
--------------------- ----------------------- ---------------
.4607 1.2043 1.7171 A -0.39
P.:int Chips (X) 1 1.4275 1 0.66
2 0.086 0.0818 0.0628 0.1003 A
3 4.2394 4.5632 3.6256 5.5009 A -1.04
0.6247 0.6454 0.5264 1.7645 A 0.52
4
351.6 360.8 292.3 429.4 A -0.40
Soil (mg/kg) 1
2 76.8 73.2 49.7 96.7 A 0.46
3 799.3 834.5 682.5 986.5 A -0.69
683.2 560 806.3 A -0.81
4 649.9
531.6 565.9373 432.1 699.8 A -0.77
Dust Wipes (ug) 1
2 123.5 128.9551 94.1 1(-3.8. A -0.47
3 272.6 272.0263 198.9 345..2 A 0.02
863.1 895.2703 714.6 1076 A -0.53
4
!re~ref.ecence..Lzboratories;_;..-
• ' Reference value is the mean •ofv
deviations
# Upper limit: reference.%vatue +.3 standard
Lower limit: reference value - 3 standard deviations
2 A: Analysis acceptable; -: Results not reported
< lower limit, not acceptable
H: Results > upper limit, L: Results
value)/standard deviation
& Z Score = (reported result-reference
based on z-scores.
Note: the acceptablity of reported results is
This is why a reported result may appear acceptable according to
performance limits, but be identified as an outlier.
LABORATORY TEAR-TO-DAJE PERFORMANCE REPORT
LAB ID=07054
ROUND * ACCUMULATED PERFORMANCE PROFICIENCY
ROUND
PERFORMANCE 4 ROUNDS(X) 2 ROUNDS(X) RATING #
• SAMPLE TYPE NO.
---------------------------------------------------
--------------------------
Paint Chips (X) 019 4/4
020 4/4
021 4/4
4/4 . 16/16 100 8/8 100 P
022
Soil (mg/kg) 020 4/4
021 4/4
022 4/4 12/12 100 8/8 100 P
Dust Wipes (ug) 019 4/4
020 4/4
021 4/4
022 4/4 16/16 100 8/8 100 P
analyzed.
' The denominators represent the number of total samples
represent the number of acceptable results.
The numerators
NP: Nonproficient -: Not Rated
# P : Proficient
four rounds
Performance ratings are based on accumulated results over
A lab's performance in ground paint chips, soil, or dust
(one year).
or more of the
wipes is rated proficient (P), if: 1) three-fourths (75X)
last
accumulated results over four rounds are acceptable or 2) for the
100 % acceptable.
two rounds, all samples are analyzed and the results are
NYC-WTC 000095322
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