Dames & Moore, 1999 - USDA Forest Service

H.\Holden\drafl final rirpt\S-7Whra\Tables\7-lg.xls
7/20199
TABLE 7.10
STATISTICAL ANALYSIS AND COMPARISON OF SURFACE WATER DATA FROM RAILROAD CREEK
(DATA COLLECTED FROM STATION RCJ DOWNSTREAM 1991 - 1998)
HOLDEN MINE RUFS
DAMES 6 MOORE JOB NO. 17693405019
Parameters
Total Metals [uaR;I
Aluminum
Arsenic '.
Barium
Beryllium '
Cadmium
Calcium .
Chromium .
&PW
Iron
Lead
Magnesium
Manganese.
Mercury '
Molybdenum'
Nickel
Potassium
Selenium
Silver
Sod~um .
Thallium
Uranium
Zinc
Dissolved Metals (uak)
Aluminum
Arsenic
Barium
Beryllium
Cadmium .
Calcium
Chromium
Copper
Iron .
Lead.
Magnesium'
Manganese
Mercury
Molybdenum
Nickel .
Potassium .
Selenium
Silver
Sodium .'
Thallium
Uranium
Zinc
8 Analyses
20
14
17
17
20
50
17
53
37
54
50
20
8
8
18
50
9
18
50
8
5
54
23
15
2 1
2 1
24
21
21
24
21
24
21
2 1
8
11
23
21
8
22
21
12
8
24
STATISTICAL CALCULATIONS RCJ
Approximate
d of Detectloris Maximum Conc. Minimum Conc. Range of RL Distribution Mean Standard Deviation Median
UCL (95%)
20 300 37 None Lognormal 1 53 74.11 150 201
11 0.76 0.32 1 Lognormal 0.48 0.13 048 0.54
17 10 5.01 None Neither 6.58 1.43 6,22 10
0 NA NA 0.04 - 1 NA NA NA N A NA
16 0.66 0.09 0.07 -0 11 Lognormal 0.26 0.19 0.16 0.45
50 9950 3800 None Lognormal 6059 1465 5818 6417
2 0.2 0.2 0.12 -5 NA NA N A 0.2 0.2
27 43.5 1.4 0.8 -10.5 Lognormal 8.28 9.05 5 12.85
37 23W) 40 None Lognormal 592 419 430 755
11 11 0.159 0.1 - 16.5 NA NA NA 3 11
50 1490 310 None Lognormal 731 232 695 790
20 26 6.46 None Lognormal 13.05 4.71 12.65 15.19
5 0.002 0.00014 0.1 Lognormal 0.08 0.03 0.0012 ('279)
8 0.68 0.47 None Lognormal , 0.55 0.06 0.55 0.6
12 0.6 0.4 10 Neither 1.98 2.20 0.55 0.6
43 870 140 500 - 533.5 Lognormal 492 174 51 9 547
0 NA NA 0.2- 1 NA NA ? N A NA
3 ' 0.2 0.03 0.04 - 0.2 NA NA NA 0 119 0.2
50 2100 520 None Lognormal 928 329 eEO 1004
1 1 1 0.04 - 1 N A NA NA 1 1
5
44
0 1
140
0.05
0 4
None
0.7 - 10
Lognormal
Nether
0.07
28.9
0.02
27.93
006
22
0.1
140
16 90 3.2 6 - 30 Normal 37.77 28.5 40 47.97
8 0.31 0.18 1-2 Lognormal 0.46 0.30 0.31 0.66
21
0
18
16.2
NA
0.72
4.7
NA
0.07
None
0.04 - 4
0.2 - 1
Nether
NA
Lognormal
7.97
NA
0.28
3.57
NA
0.20
6 4
tJA
0 20
16.2
NA
0.41
18 10100 3830 WOO Lognormal 5981 2176 5600 6982
0 NA NA 0.2 -5 NA NA NA tJA NA
23 26.9 0.39 0.1 Lognormal 7.73 7.27 .2.7 19.62
20 1290 40 100 Lognormal
373 343 240 612
10
21
0.5
1520
0.04
420
02-1
None
NA
Neither
NA
800
NA
344
0 098
6%
0.50
1520
20 26 3 5 0.9 Lognormal 11.96 5.7 9.97 18.49
4 0.00064 O.OMX)7 0.1 Lognormal 0.25 0.03 0.C25 (3954)
11
10
0.64
0.6
0.2
0.2
None
0.2 .10
Normal
NA
0.48
NA
0.11
NA
0 il
!; 1
0.54
0.6
11
0
930
N A
200
NA
500
0.2 - 1
Lognormal
NA
417
NA
246
NA
250
t iA
531
NA
2 0.09 0.08 001 -02 NA NA NA 0 S85 0.09
21
0
3
1750
NA
0.07
400
NA
0.01
None
0.04 - 1
0.04 - 0.1
Lognormal
NA
N A .
935
NA
NA
399
NA
NA
&XI
t!A
0 57
1117
NA
0.07
23 98 13 2 Lwnormal 42 6 26.7 :;8 68.25
SWMical Notes: (Statistical calculations were performed using Washington Department of Ecology's MTCAStat Excel V 5 Macro (Module 2.1). downloaded from their web site.)
Madmum and minimum concentrations are based on detected dues only.
Range of reporting limits (RL) are based on results reported as not deteded.
Distribution is determ~ned based on the MTCA stat program by analyzing the data through the W-TesP or 'D'Agostino's test". Where data is not lognormally nor normally distributed. the distribution is noted as *Neither.
When approximate distribution is reported as-neithef, the madmum concentration is reported as the 95% UCL and is presented in BOLD font. !
If UCL is repofled in brackets (UCL value). this indicates that the calculated resun from MTCAStal was reported to be unusually high. Therefore, the calculated 95% UCL is suspect.
The mean is an arithmetii mean if data are normally distributed or if distribution is indicated as 'Neithef. The reported m n for lognormally distributed data is a lognormal mean.
Statistical analysis was not performed on data sets where 50% or greater of the results were reported as not detected. Otly m;?dmum and minimum concentrations are reported, if applicable.
For these data sets. a calculated median is based an detected mlues only.
Page 4 of 4
TABLE 7.10
STATISTICAL ANALYSIS 6 COMPARISON OF
WATER QUALlTY DATA (DOWNSTREAM)
FROM RCJ