Site 18A

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This is a summary report of all field data and lab results for surface bottle site 18A.

See How To Read A Field Data Report and/or How To Read A Lab Analysis Report for more detailed information about the tables below.

Field Data Summary Report

Below is a field data summary report for this site, including the average and standard deviation values for each measured parameter. Collector initials are explained here.

Date Collector Time pH TDS (ppm) Cond. (µS) Temp. (C°) Comments
2011/06 NF 8:21 7.55 145 301 13.9 oil-like film on top of water
2011/09 RC 8:40 7.74 193 386 20.0 none
2011/12 NF, AC 7.09 91 184 none
2012/03 NF, AC 8:16 7.46 103 206 5.6 none
2012/06 AH, AS, SD, BO 15:43 7.72 183 377 24.6 very slow flow
2013/06 BO, SD 11:25 7.60 128 256 15.9 moderate flow
2014/03 TH, ET, DT, BO 13:46 6.43 130 260 4.0 high flow
2014/06 TH, DT 10:30 6.70 122 252 18.6 moderate flow
2014/09 BO, IT, BFo 14:28 7.30 189 381 19.0 stream not moving
2014/12 TH, BO 15:05 7.77 110 221 6.9 high and muddy
2015/03 BO, BFo, PM 14:35 6.67 124 249 3.9 high, slow flow to backed up reservoir
2015/06 BO, PM, GM 11:42 7.04 66 135 16.8 reservoir backed up to point; muddy
2015/09 BO, NH, SW 13:08 7.42 228 462 18.1 channel water barely moving
2015/12 BO, SW, PM 12:54 7.61 143 289 9.6 moderate-high flow
2016/03 BO, NH, SJ, MH 15:15 7.49 108 216 11.0 moderate flow
2016/06 BO, JL 10:46 6.73 147 295 18.9 high flow
2016/09 BO, CW, SJ, JL 11:28 7.40 211 421 20.8 low flow
Average values 7.28 ± 0.42 142 ± 45 288 ± 90 14.2 ± 6.6

Metal Concentrations

The following samples were analyzed for various metals. All results are reported in units of parts per million (ppm). Any result that was below the instrument detection limit is designated by '<LD', and any result that was detectable but not quantifiable (e.g., lower than the limit of quantitation) is designated by 'DNQ'.

Date Ca Mg Fe Mn Al[1] Sr Pb As Hg Cr Ba Cd
2011/06 28.0 6.4 DNQ DNQ 0.110 <LD <LD <LD <LD 0.041 <LD
2011/09 33.2 8.8 0.23 0.115 0.126 <LD <LD <LD <LD 0.059 <LD
2011/12 13.7 4.0 <LD 0.053 0.053 <LD <LD <LD <LD 0.020 <LD
2012/03 15.6 4.8 <LD 0.046 0.060 <LD <LD <LD <LD 0.034 <LD
2012/06 35.4 8.7 0.37 0.062 0.144 <LD <LD <LD <LD 0.038 <LD
2013/06 20.1 5.8 DNQ 0.091 0.081 <LD <LD <LD <LD 0.036 <LD
2014/03 19.1 5.3 0.48 0.122 0.075 <LD <LD <LD DNQ 0.046 <LD
2014/06 20.1 5.8 0.31 0.098 <LD 0.081 <LD <LD <LD <LD 0.046 <LD
2014/09 32.8 8.4 0.24 0.079 <LD 0.143 <LD <LD <LD <LD 0.059 <LD
2014/12 20.5 5.5 1.05 0.206 0.22 0.082 <LD <LD <LD <LD 0.050 <LD
2015/03 14.9 4.7 DNQ 0.065 <LD 0.059 <LD <LD <LD <LD 0.034 <LD
2015/06 8.1 2.5 0.13 0.059 <LD 0.031 <LD <LD <LD <LD 0.047 <LD
2015/09 45.0 10.8 0.24 0.119 <LD 0.186 <LD <LD <LD <LD 0.075 <LD
2015/12 24.5 6.7 <LD 0.119 <LD 0.095 <LD <LD <LD <LD 0.041 <LD
2016/03 16.3 5.0 DNQ 0.061 <LD 0.064 <LD <LD <LD <LD 0.043 <LD
2016/06 20.7 5.5 0.37 0.098 <LD 0.080 <LD <LD <LD <LD 0.056 <LD
2016/09 43.9 10.5 0.54 0.287 <LD 0.191 <LD <LD <LD <LD 0.025 <LD
Avg. ± std.dev. 24 ± 11 6 ± 2 0.4 ± 0.3 0.1 ± 0.1 0 0.098 ± 0.046 0.044 ± 0.013

TDS, Alkalinity, and Salt Concentrations

The following samples were analyzed for total dissolved solids (TDS), alkalinity, and various [[Salts Analysis|anionic salts. All results are reported in units of parts per million (ppm). Any result that was below the instrument detection limit is designated by '<LD', and any result that was detectable but not quantifiable (e.g., lower than the limit of quantitation) is designated by 'DNQ'.

Date TDS Alk.[2] F Cl Br NO3 PO4 SO4
2011/06 253 72.30 0.14 36.10 0.545 4.17 <LD 38.89
2011/09 209 77.32 0.14 57.58 0.304 3.81 0.29 27.37
2011/12 174 56.81 0.16 19.12 0.232 5.02 <LD 26.17
2012/03 135 40.61 0.14 30.25 0.234 3.66 0.28 24.13
2012/06 195 85.41 0.23 8.37 0.212 0.79 <LD 5.07
2013/06 177 39.04 0.27 59.70 0.073 3.05 <LD 31.81
2014/03 129 30.17 0.24 73.42 0.051 4.59 <LD 33.51
2014/06 160 43.68 0.26 55.69 0.042 3.38 <LD 32.49
2014/09 210 83.74 0.32 81.64 0.082 1.28 <LD 39.69
2014/12 198 48.76 0.20 54.01 0.039 3.97 <LD 28.44
2015/03 30 20.03 0.21 66.54 0.041 5.24 <LD 37.42
2015/06 106 16.96 0.25 19.73 0.032 1.52 <LD 23.64
2015/09 230 96.78 0.39 99.65 0.080 0.91 <LD 65.94
2015/12 75 49.48 0.37 66.29 0.038 2.48 <LD 35.96
2016/03 146 22.56 0.34 57.44 0.030 4.42 <LD 34.80
2016/06 169 53.82 0.32 60.81 0.044 3.14 <LD 29.18
2016/09 260 100.98 0.45 82.03 0.100 1.36 <LD 32.23
Avg. ± std.dev. 168 ± 61 55 ± 27 0.26 ± 0.09 55 ± 25 0.13 ± 0.14 3.1 ± 1.5 0.29 32 ± 12

Notes

  1. Samples were not analyzed for aluminum prior to June 2014.
  2. Alkalinity is reported as ppm CaCO3 equivalents.



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