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Table 9. Comparison of environmental and concurrent- and sequential-replicate samples for general chemical constituents-Continued [Env., environmental sample; Rep., replicate sample; Diff. 1, difference in units of constituent; Diff. 2, difference in lowest rounding unit; mg/L, milligrams per liter; ~g/L, micrograms per liter; shaded cells represent differences greater than plus or minus I lowest rounding unit; lowest rounding unit is equal to the magnitude of the least significant figure; ~S/cm, microsiemens per centimeter at 25 degrees Celsius] Sulfate Chloride Fluoride Laboratory alkalinity Station Date Env. Rep. Diff.1 Env. Rep. Diff.1 Env. Rep. Diff.1 Env. Rep. Diff 1. (mg/L) (mg/L) (mg/L) Diff.2 (mg/L) (mg/L) (mg/L) Diff.2 (mg/L) (mg/L) (mg/L) Diff.2 (mg/L) (mg/L) (mg/L) Diff.2 Concurrent replicates State Line 091096 370 370 0 0 0.4 0.4 0 0 Cameo 051396 40 40 0 0 22 22 0 0 0.2 0.2 0 0 Gunnison at 32 Road 071895 8.3 8.4 -0.1 -1 0.1 0.1 0 0 70 71 -1 -1 East 113095 34 34 0 0 1.2 1.1 0.1 1 0.2 0.1 0.1 1 125 126 -1 -1 East 051696 9.9 10 -0.1 -1 0.4 0.5 -0.1 -1 0.1 0.1 0 0 64 64 0 0 Gore 082396 35 35 0 0 0.1 0.1 0 0 103 103 0 0 Baker 081895 4.9 4.9 0 0 0.2 0.1 0.1 0.3 0.3 0 0 26 26 0 0 Maximum difference -0.1 -1 -4 :t4 0.1 1 -12 -12 Percent of samples with 71 71 14 14 86 86 43 43 no difference Percent of samples 100 57 100 71 within plus or minus 1 lowest rounding unit Sequential replicates 0 Dotsero 032096 21 20 1 1 c: :t> Reed 112295 2,200 2,200 0 0 200 200 0 0 r- ::j -< Baker 022796 6.5 6.5 0 0 0.1 0.1 0 0 0.3 0.3 0 0 32 32 0 0 0 0 Maximum difference 3 3 1 1 0.2 2 6 6 z -I Number of samples with 2 2 2 2 2 2 1 1 ::u 0 no difference r- en Number of samples 2 3 2 :t> s:: within plus or minus 1 "Q lowest rounding unit r- Z C) "Q ::u 0 C) ::u :t> s:: ... .....