Sampling and data analysis for storm water samples

NEST Environmental Services has been collecting water samples from it clients for 10 years and we have a comprehensive set of analyses from these data. Our analyses include pH, Conductivity, Total Suspended Solids (TSS), Total Oil and Grease (O&G), Copper, Zinc, Lead. The following table shows a typical summary analysis for one year of water sample data.

  pH Cond. TOC TSS Copper Lead Zinc
Arithmetic Mean 6.2 799 30.5 183 0.085 0.074 0.64
Median 6.4 100 17 44 0.054 0.001 0.3
Standard Deviation 1.5 2533 41 611 0.12 0.16 1.12
Range 6.8 11990 268 4496 0.805 0.949 7.39
Minimum 1.9 10 2 4 0.005 0.001 0.014
Maximum 8.7 12000 270 4500 .81 .95 7.4
No. Samples 55 55 55 55 55 55 55

Sample Analysis

ph Chart

TOC Chart

TSS Chart

Copper Chart

Lead Chart

Zinc Chart