and at the lower extreme for hydrologically similar sample sites. 



Orthophosphorous and total phosphorous concentrations were near the 

 lower end of the range for sample sites of this type. Nitrate and 

 ammonium concentrations were both below detection limits; the total 

 organic carbon concentration was intermediate among similar sites. 



Chemical history- No previous measurements of chemical 

 characteristics for this site (or nearby wetlands) are known. 

 Specific conductance measurements collected in August 1994 (two 

 months after sampling) showed a 45% seasonal increase during that 

 period. Periodic spill at high pond stage and/or recharge to the 

 ground water system maintain dilute water chemistry at this site. 



Sediiaents. By contrast with the water column data, several trace 

 elements in Furnell WPA sediments occur at intermediate to high 

 concentrations compared to hydrologically similar sample sites. 

 Elevated sediment concentrations of chromium, nickel, vanadium and 

 zinc (none of which occurred above detection limits in the water 

 column) probably relate to sources in the shales underlying the 

 site, and suggest the geochemistry of this wetland is effective in 

 sequestering the natural influx of metals to the wetland. 



