Table 1.
Results of full-shift* personal air samples for Δ9-THC
| Participant’s work location | Concentration (ng/m3) | |
|---|---|---|
| Day 1 | East gates 2,5,6 | 300 |
| East gates 2,5,6 | 180 | |
| East gates 7,8,9 | 240 | |
| Southwest gates 2,3 | [51]† | |
| Field level | 330 | |
| 290 | ||
| [94] | ||
| [81] | ||
| Plaza/Field house | ND‡ | |
| ND | ||
| Roving outside stadium, in vendor area | [49] | |
| Roving west side of stadium | ND | |
| Bike patrol outside stadium | ND | |
| Directed operations (Headquarters building) | ND | |
|
| ||
| Day 2 | Plaza/Field house | 220 |
| 250 | ||
| Field level, gate 13 | 290 | |
| Field house, gate 6 | [120] | |
| Field house, gate 6 | [90] | |
| Field house, gate 6 | [64] | |
| Field level | [99] | |
| 140 | ||
| Roving east side of stadium, rooftop | [41] | |
| Roving field level, concourse | [92] | |
| Bike patrol outside stadium | ND | |
| East ramp behind stage (fixed location) | ND | |
| Backstage | ND | |
| Main entry gate | ND | |
| Directed operations (Headquarters building) | ND | |
|
| ||
| Minimum detectable concentration (MDC)§ | 40 | |
| Minimum quantifiable concentration (MQC)¶ | 140 | |
*
Sampling times ranged from 343 minutes to 501 minutes.
†
Values in brackets were between the MDC and MQC. More uncertainty is associated with these values.
‡
ND = none detected, below the MDC of 40 ng/m3.
§
The MDC was calculated by dividing the analytical limit of detection of 50 ng per sample by an average air sample volume of 1.25 m3.
¶
The MQC was calculated by dividing the analytical limit of quantification of 170 ng per sample by an average air sample volume of 1.25 m3.