HomeMy WebLinkAboutDU20 Email Summary 03032025From:Jason Williams
To:Ota, Christopher A CIV USN NAVFAC SW SAN CA (USA); Cummings, Colin
Cc:Michael K. Klosky; Mike Sargent; Jake Lippman; Ray Velazquez; Courtney Bigelow; Gage Thompson; Henry
Moreno; Sam Head; Charles Connolly; Chris Kuhlman
Subject:[Non-DoD Source] Tustin Air Monitoring Summary 03-08-25
Date:Monday, March 10, 2025 7:29:29 AM
Good morning, Chris and Colin,
Please find below an update of events for 03/08 8am to 03/09 8am:
Bainbridge performed air monitoring ( 7am to 7pm) at 19 stations throughout the day and
analytical sampling at one station.
1. The 24-hr TWA (from 03/08/25 to 03/09/25, 8am-8am) for PM10 concentrations
from the DustTraks were as follows:
Around the immediate vicinity of the hangar (DU1-DU12) ranged from 11.17
mg/m3 to 20.64 µg/m3
Around the outer perimeter and community (DU13-DU21) ranged from 4.11
mg/m3 to 27.54 µg/m3
2. Community sample from DU20 collected today for laboratory analysis and will
be reported in subsequent emails once results are available. Results have been
received for 03/02 to 03/04, and no asbestos was detected in any of the samples
analyzed for those dates.
3. Containment samples were collected today from CU-08 for laboratory analysis
and will be reported in subsequent emails once results are available. Results
have been received for 03/03 and 03/04, no asbestos was detected in the 03/04
samples, however, 1 fiber was detected in the decon sample for 03/03. There
was no asbestos detected in the exhaust samples for that date.
4. Other observations for the day included:
Prevalent wind on the site once wind speeds were at or above 5 mph came from the
west, northwest and southwest and ranged from 0 to 24 mph as recorded by the
weather station attached to DU01.