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<br />Table 2. Statistical summary of water-quallty data for sites AR34.5 and AR31.0, April 1994 through March 1995
<br />[Concentrations in micrograms per liter~ <, less than; see fig. I for location of sites)
<br /> Number of
<br /> Number of analyses 25th 75th
<br /> ConsOtuent analyses greater than Minimum percentile Median percenOIe Maximum
<br /> reporting
<br /> level
<br /> SITE AR34.5
<br />Metals of concern:
<br /> Aluminum, dissolved 34 24 <40 <40 160 450 12,600
<br /> Aluminum, tolal 52 52 1,430 2,920 4,350 6,680 55,600
<br /> Iron, dissolved 34 34 190 780 2,500 3,760 6,420
<br /> Iron, tOlal 52 52 3,070 5,900 8,680 14,300 138,000
<br /> Copper, dissolved 34 34 7 85 530 960 4,500
<br /> Copper, total 52 52 70 440 900 1,260 3,660
<br /> Cadmium, dissolved 34 30 <0.5 I 1.7 2.3 6.1
<br /> Cadmium, 10lal 52 48 <0.5 1.1 2.0 2.6 5.5
<br /> Manganese, dissolved 34 34 200 370 710 880 2,520
<br /> Manganese, 10lal 52 52 260 500 830 1,060 2,750
<br /> Zinc, dissolved 34 34 25 140 260 340 1,140
<br /> Zinc, total 52 51 <52 170 290 350 970
<br />Other trace elements:
<br /> Arsenic, 10lal 52 43 <2 4 7 10 170
<br /> Barium, dissolved 34 27 <20 20 24 27 56
<br /> Barium, tolal 52 51 <20 29 56 80 1,020
<br /> Cobalt, dissolved 34 30 <6 10 17 22 60
<br /> Cobalt, total 52 51 <6 13 21 28 62
<br /> Lead, total 52 42 <2 <2 5 13 197
<br /> Nickel, dissolved 34 17 <15 <15 15 17 29
<br /> Nickel, total 52 33 <15 <15 18 24 50
<br /> Vanadium, lotal 52 23 <4 <4 <4 7 110
<br /> SITE AR31.0
<br />Metals of concern:
<br /> Aluminum, dissolved 25 17 <30 <40 73 400 770
<br /> Aluminum, total 25 22 <30 220 450 570 1,390
<br /> Iron, dissolved 25 20 <15 80 430 1,680 2,510
<br /> Iron, total 24 24 39 690 1,710 2,230 2,950
<br /> Copper, dissolved 25 22 <4 15 240 780 1,010
<br /> Copper, lotal 25 25 10 52 280 740 820
<br /> Cadmium, dissolved 25 18 <0.5 <0.5 1.4 2.0 2.5
<br /> Cadmium, lotal 25 20 <0.5 0.5 1.1 1.8 2.1
<br /> Manganese, dissolved 25 25 19 270 390 720 1,000
<br /> Manganese, total 25 25 21 290 380 660 940
<br /> Zinc, dissolved 24 23 <5 54 170 290 310
<br /> Zinc, total 25 24 <4 88 140 260 300
<br />Other lrace elemen1s:
<br /> Arsenic, total 25 1 <2 <2 <2 <2 2
<br /> Barium, dissolved 25 19 <20 21 25 28 31
<br /> Barium, tolal 25 23 <20 24 26 27 30
<br />10 Assessment of ""181 Transport Into and Out of Terrace Rell8l'VOlr, Cona/OS County, Colorado,
<br /> April 1994 Through March 1995 003167
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