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<br />001759 <br /> <br />Calcium diss (mg/L) 33 30 (n=lO) 32 (n=38) 38/25.1 <br />Magnesium diss 5.6 5.7 (n=lO) 6.0 (n=38) 7.6/4.8 <br />(mg/L) <br />Sodium diss (mg/L) 14,7 13,6 (n=6) 15 (n=37) 23/11 <br />Potassium diss \.9 1.7 (n=6) \.9 (n=36) 2.6/\.5 <br />(mg/L) <br />Chloride total (mg/L) \.9 2.3 (n=2) 3 (n=36) 11/1 <br />Sulfate S04 total 42.5 44.5 (n=2) 53 (n=35) 79/33 <br />(mg/L) <br />Arsenic diss (ug/L) ND 4.7 (n=9) 2 (n=14) 5/0.5 <br />Barium diss (ug/L) No Data 64 (n=4) 74 (n=5) 100/50 <br />Boron diss (ug/L) <5 No Data 29 (n=24) 220/10 <br />Cadmium diss (ug/L) ND No Data 0,6 (n=7) 2/0 <br />Chromium diss (ug/L) <1 No Data 4.3 (n=7) 10/0 <br />Cobalt diss (ug/L) <5 No Data ND (n=7) <3/0 <br />Copper diss (ugIL) 1 6.1 (n=8) 4,1 (n=9) 10/1 <br />Lead diss (ug/L) <l 1.2 (n=9) 1.3 (n=12) 6/0 <br />Manganese diss ND 12.8 (n=4) 7.3 (n=8) 20/5 <br />(ug/L) <br />Nickel diss (ug/L) ND 7.5 (n=8) 7,5 (n=2) 10/5 <br />Silver diss (ug/L) ND No Data ND 0 <br />Zinc diss (ug/L) 5,2 8.3 (n=9) 10,8 (n=14) 50/0 <br />Aluminum diss (ug/L) <10 53 (n=8) 22.5 (n=2) 30/15 <br />Selenium diss (ug/L) ND 0.7 (n=9) l.l (n=14) 4/0.5 <br />Selenium total (ug/L) ND 0,9 (n=9) l.l (n=7) 2/0 <br />Hardness (mg/L) 106 100 (n=8) 105 (n=26) 126/84 <br />Nitrate diss N03 <0,1 0.1 (n=4) 0,37 (n=7) 0.5/0,2 <br />(mg/L) <br />Mercury diss (ug/L) ND 0,16 (n=9) 0.27 (n=13) 1.3/0.05 , <br /> <br />Notes: For data that was below detection levels, the value used to calculate the average value was Y2 the detection <br />limit. Historical data from STORET retrieval, most samples taken during 1970's and 1990's, ND is not detected as <br />reported by the laboratory doing the analysis n is the number of analysis diss is dissolved <br /> <br />Most parameters monitored are within the historical ranges with increases in water temperature, <br />conductivity, bicarbonate ion, and dissolved calcium. Dissolved oxygen shows a decrease from <br />the 500 cfs average and is lower than the bottom end of the historical range, Only nine samples <br />for dissolved oxygen were reported in the STORET data for this site, <br /> <br />Page 11 of 15 <br />