NYC 9/11 Public Portal Document
TESTING (ELPAT) PROGRAM
ENVIRONMENTAL LEAD PROFICIENCY ANALYTICAL
022
INDIVIDUAL LABORATORY REPORT FOR ROUND
ID=07054 MARCH 18, 1998
LAB
ATC ASSOCIATES, INC. NY, NEW YORK, NY 10010
REFERENCE ACCEPTABLE RANGE # LAB a Z &
SAMPLE REPORTED
VALUES LOWER UPPER PERFORMANCE SCORE
SAM LE TYPE NO. RESULTS
= • ---------------------------------------
------------
may ----- 0.39
Chip- 1.4275 1 ,4607 1.2043 1.7171 A
" P: r att Chips (X) 1
0.0818 0.0628 0.1003 A 0.66
2 0.086
3.6256 5.5009 A -1.04
3 4.2394 4.5632
0.6654 0.5264 ;.7645 A -0.52
4 0.6247
360.8 292.3 429.4 A -0.40
1 351.6
Soi l (mg/kg) 2 73.2 49.7 96.7 A 0.46
76.8
834.5 682.5 986.5 A -0.69
3 799.3
683.2 560 806.3 A - 0.81
4 549.9
565.9373 432.1 699.8 A -0.77
1 531.6
Oust Wipes (ug) 94. 1 1t3.8 A -0.47
2 123.5 128.9551
272.0263 198.9 145 2 A 0.02
3 272.6
895.2703 714.6 1076 A -0.53
4 863.1
•referer~ce..laboratories
• Reference value is the raan of_t-
standard deviations
Upper limit: referr^.:.c:.w iue • 3
standard deviations
Lower limit: reference value - 3
acceptable; : Results not reported
A: Analysis
Results < lower limit, not acceptable
H: Results > upper limit, L:
-reference value)/standard deviation
8 Z Score = (reported result
the acceptablity of reported results is based on z-scores.
Note: appear acceptable according to
This is why a reported result may
performance l imits, but be identified as an outl ier.
LABORATORY YEAR-1O-OA.TE PERFORMANCE REPORT
LAB (D=07054
PROFICIENCY
ROUND ROUND * ACCUMULATED PERFORMANCE
PERFORMANCE 4 ROUNDS(X) 2 ROUNDS( ) RATING 9
SAMPLE TYPE NO.
---
019 4/4
Paint Chips (X)
020 4/4
021 4/4
. 16/16 100 8/8 100 P
022 4/4
Sail (mg/kg) 020 4/4
021 4/4
4/4 12/12 100 8/8 100 P
022
019 4/4
Dust Wipes (ug)
020 4/4
021 4/4
4/4 16/16 100 8/8 100 P
022
number of total samples analyzed.
• The denominators represent the
number of acceptable results.
The numerators reoresent the
NP: Nonproficient -: Not Rated
P Proficient
ratings are based on accumulated results over four rounds
Performance
in ground paint chips, soil , or dust
(one year). A lab's performance
if: 1) three-fourths (75X) or more of the
wipes is rated proficient (P),
acceptable or 2) for the last
accumulated results over four rounds are
samples are analyzed and the results are 100 % acceptable.
two rounds, all
NYC-WTC 000095474
OCR can misread numbers and units. Confirm readings against the page image before using them.