06:30 hours pre-start
07:00 hours placement of air sampler pumps A2, A3, A4, and A5
07:15 hours wind speed and direction: 0 to 1 m/s from ESE
07:30 hours placement of sprinkler(s) – dust suppression areas 1 and 2, and grassed areas adjacent to area 4.
08:00 hours discussion with WSP consultant re management of site up until the arrival of geo-fabric contractors Wednesday next week. Continued air monitoring and dust suppression now that hot spot areas are exposed earth.
09:00 hours movement of sprinklers to ensure coverage across areas 1 and 2.
09:30 hours aerial photography:
10:30 hours check of PM10 levels upwind and downwind found to be approximately the same i.e. between 0 and 0.20 mg/m3
12:00 hours check of air sampling pumps and activities.
14:00 hours wind has picked up with strength between 0 and 3 m/s ESE
15:00 hours PM10s upwind and downwind of job site approximately the same, no change in direction and strenght.
Results:
Little activity on the worksites, unloading of clean fill continues, and dust suppression of all areas using hoses.
Wind strength and direction 10:00 to 15:00 hours constant ESE 0 to 2 m/s
PM10s upwind and downwind 10:00 to 15:00 hours constant between 0 and 0.3 mg/m3 i.e. little difference between upwind and downwind values.
