Table 1. Weather data and notes taken during sound measurements of the KMAX and Vertoil 107 helicopters during helicopter logging operations.
WEATHER
Wind
Date
BLM
Helicopter Timber Sale Time
Location
Sky
conditon
upwind
61
45
not taken
Service landing on Moon Creek Road. KMAX was being repaired all day. 1st flight at
3pm - only a 20min test flight. Clear view of ship; no obstructions. Sound
measurments taken of the test flight.
no noise
data taken
52
64
not taken
At about 9am, crew leader decided to not fly this day. Constant rain. NO SOUND
DATA TAKEN THIS DAY.
3pm
Service
Landing
Cloudy
0-2
uphill/
upcanyon
4/16/07
KMAX
4/17/07
KMAX
Moon 25
sale
7-9am
Service
Landing
Rain
0
none
4/18/07
Cedar
Vertol 107 House sale
4/18/07
Cedar
Vertol 107 House sale
Rain - then
Service
Partly
12:30
Landing
0-5
Cloudy
1st & 2nd Partly
1:30 - 4:00 Log
Cloudy PM
Landings then Rain 0-5
4/19/07
Cedar
Vertol 107 House sale
10:45am - 2nd Log
1pm
Landing
Partly
Cloudy
2-4 (gust
up to 6)
Notes
uphill/
upcanyon
upwind
45
55
not taken
Arrived at service landing at about 9:30 am. Fog/rain kept helicopter down until about
12:30pm when 1st measurements taken. 2nd set of measurments at service landing
taken after taking measurments of Log Landings.
uphill/
upcanyon
upwind
52
70
not taken
1st Log Landing - on ridgeline; rain/hail stopped measurements at 1st landing. 2nd
log landing (after hail storm passed) - in canyon. 2 loaders at each site.
uphill/
upcanyon
upwind
50 - 67
55 - 34
4/19/07
KMAX
Moon 25
sale
4;00 pm - 1st Log
5:00 pm Landing
Cloudy
2-4
uphill/
upcanyon
4/20/07
KMAX
Moon 25
sale
7:15am 9:15 am
Clear
0-2
downhill at
downwind
8:30am
2nd Log
Landing
Barometric
Humidity Pressure
(%)
(inHG)
Direction
Moon 25
sale
Direction
re:to noise
Temp.
(oF)
Speed
(mph)
upwind
28.59
Measurments taken at 2nd landing, but last (3rd) recorder (Chris) is actualy relatively
close to 1st landing site. 2 loaders at landing site.
Departed the "Cedar House" timber sale and immediately drove south to the "Moon
25" sale. Arrived at about 4pm. Kmax operating in a fairly confined area. Moving logs
from pickup point to landing all within 1/2 mile circle. (2 loaders and 1 "processor"
operating.) Constant hover of noise throughtout the measuremnt period. (shower at
end of day - 5pm)
50
70-85
28.5
43 - 53
67 - 72
28.92
2 directional lines of measurments taken at this site. 1st directional line was W-E;
2nd line was a NW-SE line. No loaders at the site.