Site 18

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This is a summary report of all data for surface stream site 18.

See Interpreting field and lab reports for more detailed information about the data in these tables.

Field Data Summary

Below is a field data summary report for this site, including averages and standard deviations of all measureable parameters. Collector initials are explained here.

Date Collector(s) Time pH TDS (ppm) Cond.(μS) Temp.(°C) Comments
2011/06 (Q01) NF 8:10 7.52 150 300 13.3 none
2011/09 (Q02) RC 8:18 7.66 204 407 19.9 moderate flow
2012/09 (Q06) BF, SD 12:31 7.86 198 388 19.0 moderate flow
2012/12 (Q07) BF, SD 11:01 7.51 74 151 9.1 high flow
2013/03 (Q08) BF, DT 10:11 7.85 141 282 2.6 none
2013/09 (Q10) AT, DT, SD 11:26 7.62 140 282 14.9 moderate flow
2013/12 (Q11) DT, BF 9:59 8.06 137 284 3.6 none
2014/03 (Q12) dropped[1]
Averages: 7.73 149 299 11.8
Standard Deviations: 0.20 43 84 6.9

Metal Concentrations Summary

The following samples were analyzed for various metals. All results below are 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[2] Sr Pb As Hg Cr Ba Cd
2011/06 (Q01) 26.8 7.9 0.25 0.081 0.104 <LD <LD <LD <LD 0.045 <LD
2011/09 (Q02) 33.1 9.0 DNQ 0.074 0.130 <LD <LD <LD <LD 0.053 <LD
2012/09 (Q06) 37.61 9.038 <LD <LD 0.149 <LD <LD <LD <LD 0.036 <LD
2012/12 (Q07) 12.37 3.381 0.22 0.091 0.047 <LD <LD <LD <LD 0.020 <LD
2013/03 (Q08) 17.6 5.403 <LD 0.069 0.072 <LD <LD <LD <LD 0.038 <LD
2013/09 (Q10) 25.008 6.625 DNQ 0.111 0.096 <LD <LD <LD <LD 0.050 <LD
2013/12 (Q11) 18.39 5.602 DNQ 0.116 0.074 <LD <LD <LD <LD 0.043 <LD
2014/03 (Q12)
Avg: 24.4 6.7 0.23 0.090 - 0.096 - - - - 0.041 -
Std.Dev.: 9.0 2.1 - 0.019 - 0.04 - - - - 0.011 -

TDS, Alkalinity, and Salt Concentrations Summary

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

Site ID TDS Alk.[3] F- Cl- Br- NO3- PO43- SO42-
2011/06 (Q01) 223 39.81 0.10 42.88 0.579 2.67 <LD 45.50
2011/09 (Q02) 242 68.97 0.15 64.80 0.339 3.54 0.29 30.25
2012/09 (Q06) 249 97.11 0.19 30.62 0.187 0.00 <LD 16.66
2012/12 (Q07) 241 32.27 0.26 27.43 0.252 5.95 <LD 28.10
2013/03 (Q08) 181 40.99 0.27 92.75 0.150 3.91 <LD 39.31
2013/09 (Q10) 175 53.17 0.29 60.43 0.031 3.25 1.08 33.34
2013/12 (Q11) 180 31.02 0.30 66.80 0.039 4.91 1.27 36.69
2014/03 (Q12)
Avg: 213 51.91 0.22 55.10 0.225 3.46 0.88 32.84
Std.Dev.: 33 23.89 0.08 23.06 0.19 1.88 0.52 9.20

Notes

  1. ^ A site denoted by "dropped" means that this sampling point will no longer be visited for field or lab data collection. Reasons for dropping a sampling point may include: redundancy with other sites; site is no longer accessible; land use changes may have removed the site (e.g., new road, culvert, etc.). This site will not appear in future data reports unless reactivated.
  2. ^ Samples were not analyzed for aluminum prior to June 2014.
  3. ^ Alkalinity is reported as ppm CaCO3 equivalents.