TABLE 1.
Chemical and physical parameters of the stream waters from each site for the May 2008, July 2008, and September 2008 sampling eventsa
| Parameter | Range of values for site |
|||||
|---|---|---|---|---|---|---|
| HCK20.6b | EFK6.3 | EFK13.8 | EFK23.4 | BCK12.3 | WCK3.9 | |
| Element concn (mg/liter) | ||||||
| Na | 3.6-9.0 | 14.9-17.7 | 8.6-9.2 | 9.9-10.3 | 40.5-50.2 | 11.1-15.7 |
| Mg | 14.1-19.0 | 10.2-12.3 | 10.9-12.3 | 11.9-12.9 | 19.5-25.5 | 13.1-16.6 |
| Ca | 39.4-44.3 | 41.3-4.60 | 36.3-43.6 | 36.5-42.5 | 128.4-154.4 | 42.2-48.6 |
| Ba | 64.1-99.9 | 35.6-70.4 | 45.5-65.4 | 40.9-56.8 | 167.9-230.0 | 47.9-64.2 |
| Sr | 0.1-0.1 | 0.1-0.2 | 0.1-0.1 | 0.1-0.2 | 0.5-0.5 | 0.1-0.2 |
| Mn | 2.0-150.9 | 24.3-3,770.0 | 15.9-184.0 | 24.7-81.3 | 1.3-15.9 | 6.3-43.7 |
| Fe | 0.1-0.8 | 0.1-0.8 | 0.1-1.7 | 0.1-0.3 | 0.2-0.3 | 0.3-0.8 |
| Zn | 1.4-8.1 | 5.6-14.2 | 3.0-18.5 | 11.2-33.0 | 1.5-6.5 | 12.7-38.5 |
| Al | 72.9-1,080.7 | 68.5-1,320.5 | 118.4-3,612.4 | 60.9-260.0 | 30.3-57.3 | 198.8-1,076.8 |
| U | 0.2-6.9 | 3.7-10.0 | 6.0-7.3 | 0.8-7.4 | 175.0-268.4 | 0.2-6.9 |
| Dissolved Hg concn (ng/liter) | 0.6-2.3 | 13.3-40.1 | 14.1-82.0 | 54.6-138.3 | 3.2-5.6 | 0.0-11.3 |
| Sediment Hg concn (ng/mg) | 0.0-0.1 | 10.6-20.2 | 11.9-17.7 | 30.4-47.1 | 1.4-1.8 | 2.5-15.1 |
| Dissolved MeHg concn (ng/liter)c | 0.0-0.1 | 0.5-2.5 | 0.2-0.4 | 0.4-0.8 | 0.0-0.1 | 0.0-0.9 |
| Ion concn (mg/liter) | ||||||
| Cl− | 4.0-4.2 | 10.0-14.0 | 4.0-6.0 | 6.0-8.0 | 4.1-54.1 | 8.0-16.3 |
| NO3− | 0-4.2 | 8.0-16.6 | 0.0-6.4 | 2.0-8.3 | 266.0-370.7 | 0.0-10.2 |
| SO42− | 16.0-18.1 | 34.0-46.8 | 32.0-36.6 | 34.5-38.0 | 38.0-50.0 | 34.2-98.8 |
| DO concn (mg/liter) | 7.0-9.0 | 8.0-8.3 | 8.4-9.1 | 9.0-10.1 | 8.3-9.4 | 8.3-9.2 |
| DIC (mg/liter) | 38.9-60.4 | 34.3-40.8 | 34.1-42.2 | 31.7-40.3 | 59.0-76.0 | 34.4-43.1 |
| Conductivity (μS/cm) | 348.0-518.0 | 438.0-626.0 | 334.0-556.0 | 340.0-540.0 | 1,170.0-1,835.0 | 395.0-592.0 |
| pH | 7.8-7.9 | 7.6-8.0 | 7.9-8.0 | 8.1-8.3 | 7.8-7.9 | 8.1-8.9 |
| Temp (°C) | 14.3-20.7 | 16.8-21.5 | 17.1-21.4 | 18.7-19.9 | 14.7-20.6 | 18.7-22.1 |
| Turbidity (NTRUd) | 9.9-25.4 | 4.3-14.0 | 6.6-23.7 | 3.6-19.4 | 1.5-12.6 | 3.7-5.0 |
a
Sedimentary Hg is the exception, as sediments were analyzed in that case.
b
Site HCK20.6 is considered uncontaminated, while sites EFK6.3, EFK13.8, EFK23.4, BCK12.3, and WCK3.9 are contaminated.
c
Only May and July 2008 samples were analyzed for MeHg.
d
Nephelometric turbidity ratio units.