EAGLE RIVER FLATS FY 00
64
Wild Total Station. Surveying methods were
tions from 1991 to 1994. Only two positive
similar to those described in past years. For
sediment samples were found (Samples #322
Area A we used a benchmark established in
and 323) (Racine et al. 1993). These samples
1998 near Pond 258. Area C locations were
were collected in May 1991 at points 25 and
obtained from a benchmark on Clunie Pad.
50 m southwest of the observation tower;
Area C/D locations were obtained from a
however, subsequent samples in August 1992,
benchmark established this year near Pond
when cores to 30-cm depth were taken, were
730.
blank.
In 1999, nine of the 24 telemetry bird mor-
talities attributed to white phosphorus poi-
Northern A
We collected 20 grid composites from
soning were in Area A. However, white phos-
ponds northwest of the pumped Ponds 256
phorus was found in only one of these ducks,
and 258 (Fig. III-3-1 and III-3-2). Ten samples
and the "last alive" signal from this bird was
were from Pond 246, and the remainder were
from Area C. Despite the uncertainties asso-
from small ponds near Pond 246. Approxi-
ciated with the remaining mortalities, we felt
mately 20 discrete samples were collected
that it was important to continue sampling in
from this region of Area A during investiga-
Area A. We wanted to determine if there were
Pond 226
Po nd 228
Pond 246
Pond 256
Pond 258
Figure III-3-1. Aerial photo (Aeromap 18 August 1998) with locations of 2000 grid com-
posites (yellow) and 19981999 grid composites (green). Red stars indicate locations where
white phosphorus was detected.
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