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Dames & Moore, 1999 - USDA Forest Service

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TABLE 7.1-E<br />

SURFACE WATER AREA BACKGROUND STATISTICAL ANALYSIS<br />

HOLDEN MINE W S<br />

DAMES L MOORE JOB NO. 1769J-MHQ19<br />

STATISTICAL CALCULATIONS<br />

Parameters<br />

Pl of<br />

Analyses Detections<br />

Maximum<br />

Conc.<br />

Minimum<br />

Conc.<br />

Range of RL<br />

Approximate<br />

Distribution<br />

Mean<br />

Standard<br />

Deviation<br />

Median<br />

90th<br />

Percentile<br />

Total Metals (udLJ<br />

Aluminum 41 26 240 13 20-140 Lognormal 86.1 58 9 65 144<br />

Arsenic 25 24 2 0 14 0.04 Normal 0.87 0.415 0.83 1.44<br />

Barium 39 39 7.09 3 None Lognormal 4.8 0.97 4.8 6 24<br />

Beryll~um<br />

Cadmium<br />

32<br />

40<br />

0<br />

3<br />

NA<br />

0.05<br />

NA<br />

0.04<br />

0.04- 02<br />

0.02 - 0 2<br />

NA<br />

Non-Parametric<br />

NA<br />

0.047<br />

NA<br />

0.006 ,<br />

NA<br />

0.05<br />

NA<br />

0 10<br />

Calcium 39 39 10200 2410 None Lognormal 4589 1659 4020 6814<br />

Chromium 31 2 0.3 0.3 0.2-10 Non-Parametric 0.3 0 0.3 0 46<br />

copper 33 24 4 0.3 0.5-1.2 Lognormal 1.1 0 936 0.9 1.83<br />

Iron 41 36 230 30 20 Lognormal 110 44.5 100 177<br />

Lead 33 16 4.8 0.054 0.2-0.4 Non-Parametric 0 46 116 0.1295 0 3<br />

Magnesium 38 38 760 240 None Lognormal 443 ' 1445 360 647<br />

Manganese 39 39 6.8 0.22 None Normal 2.95 1 59 2.96 5.06<br />

Mercury 11 4 0.00064 0.000032 0.001-0.1 Lognormal 0.00046 0.00014 0 000425 0 00066<br />

Molybdenum 21 21 0.98 0.35 None Lcgnormal 0.57 ' 0.154 0.53 0.79<br />

Nickel 31 25 0.5 0 2 0.2 . Non-Parametric 0.3 0.08 0 3 0 4<br />

Potassium 38 11 810 510 500 Lognormal 652 96.7 630 672<br />

Selenrum 10 0 NA NA 0 2-1 N A NA NA N A NA<br />

Silver 38 2 0.15 0.12 0.04-0.2 Non-Parametric 0 135 0.021 0.135 0.1<br />

Sodium 39 35 1140 490 540-840 Lognormal 767 196.7 730 1034<br />

Thallium<br />

Uranium<br />

14<br />

8<br />

0<br />

1<br />

NA<br />

0.06<br />

NA<br />

0.06<br />

0.04-1<br />

0 04 -<br />

NA<br />

Non-Parametnc<br />

NA<br />

0.06<br />

NA<br />

NA<br />

NA<br />

0 06<br />

NA<br />

NA<br />

Zinc 41 11 11 3 4-10 Non-Parametric 5 2 2.1 5 5<br />

Dissolved Metals (uqRI<br />

Aluminum 43 22 60 7.4 20 - 40 Lognormal 29 . 12.2 30 37.4<br />

Arsenic 19 19 1 0.13 None Normal 0.565 0.242 0 52 0.9<br />

Barium<br />

Beryllium<br />

42<br />

34<br />

42<br />

0<br />

24.3<br />

NA<br />

3 42<br />

NA<br />

None<br />

0.04 - 04<br />

Non-Parametric<br />

NA<br />

8.22<br />

NA<br />

5.9<br />

NA<br />

5<br />

N A<br />

17.5<br />

NA<br />

Cadmium 41 11 0.09 0.02 0.04 -07 Lognormal 0.061 0.021 0.06 0 07<br />

Cakium 42 41 10600 2310 6000 Lognormal 4564 1653 3990 6703<br />

Chromium 34 0 NA NA 02 -10 NA NA NA NA NA<br />

Copper 32 31 1.1 0.2 1.2 Lognormal 0.64 0.26 0.6 1.06<br />

Iron<br />

Lead<br />

40<br />

35<br />

23<br />

12<br />

91<br />

1.8<br />

20<br />

0018<br />

20<br />

0.011 - 09<br />

Non-Parametric<br />

Lognormal<br />

37.87<br />

0602<br />

14.3<br />

0505<br />

40<br />

0.25<br />

40<br />

0 54<br />

Magnesium 40 40 790 230 None Lognormal 417 151 355 626<br />

Manganese 39 36 3.17 0.13 0.13-0.29 Normal 1.507 0.677 1.625 2.42<br />

Mercury . 10 4 O.MH333 000003 0.1 Non-Parametric 0.00024 0.00014 0000295 005<br />

Molybdenum 24 24 1.02 0 3 None Lognormal 0 56 0.16 0 5 0 78<br />

Nickel<br />

Potassium<br />

32<br />

39<br />

20<br />

9<br />

0.6<br />

780<br />

0 2<br />

500<br />

0.2<br />

200 - 500<br />

Lognormal<br />

Non-Parametric<br />

0.28<br />

631<br />

0.11<br />

95<br />

0.21<br />

650<br />

0.39<br />

660<br />

Selenium 10 0 NA NA 02- 1 NA NA NA NA NA<br />

Silver 41 0 NA NA 0 04 NA NA NA NA NA<br />

Sodium 41 34 1280 300 560-1000 Lognormal 759 237 675 1078<br />

Thallium 17 0 NA NA 0.04-4 NA NA NA NA NA<br />

Uranium 11 1 0.06 006 0.04-0.4 Nm-Parametric 0.06 NA 0.06 0.172<br />

Zinc 44 15 16 0.85 4 Lognormal 7.184 4.203 5 7.81<br />

Statistical Notes: (Statistical calculations were performed using Washington Department of Ecology's MTCAStat &el V.5 Macro (Background Module 2 1). downloaded from their web site.)<br />

Ma?imum and minimum concentrations are based on detected mlues only.<br />

Range of reporting ltrnds (RL) are based on resuns reported as not detected. I<br />

Chstribution is determined based on the MTCA stat program by analyzing the data through the "Distribution Decision Probability Plot". Where data is not lognormally nor normally distributed, the distribution is noted as 'Non-parametric'. i<br />

The mean is an arithmetic mean if data are normally distributed or if d'istributim is indited as 'non-parametric-. The reported mean for lognormally distributed data is a lognormal mean.<br />

NA indicates that the data set contained too many results reported as not detected lo perform astatistical analysis for background concentrations.<br />

Page 5 of 5<br />

TABLE 7.1s<br />

SURFACE WATER AREA BACKGROUND STATISTICAL ANALYSIS

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