Figure 3.1 Weather monitoring equipment set-up. 



Incoming data to the CR-21 data-logger is processed by pre-programmed macro pro- 

 grams which transform the direct readings into the desired units. Data stored in the data logger 

 is transcribed into a computer spreadsheet at the end of each 24 hour monitoring period. 



Observations 



Pond Waters 



Figures 3.2-3.5 and 3.9-3.13 show the pond water diurnal data for March and August, 

 respectively. All data tables for the above figures are in Appendix A Cyclical variations in 

 several of the water quality parameters were expected and observed in most cases. For example, 

 variations in dissolved oxygen are directly related to the activity of aquatic organisms including 

 algae (Barbizon) and plankton (Peck BS). Fluctuations in water temperature are dampened and 

 slightly lagged those of air temperature. None of these observations were unexpected. 



The electrical conductivity (EC) of the waters did not remain constant even though they 

 were corrected for temperature. The EC data also did not exhibit a wave-like nature. 

 Interestingly, the EC did not change dramatically with temperature in Peck SP which contained 

 water in equilibrium with a vast amount of evaporite minerals (mainly mirabilite). The response 

 to temperature change in a saturated solution may increase with larger temperature changes or 

 may be simply a slow process. Diurnal changes in density, pH and Eh were not readily 

 distinguishable and often suffered from 'noise'. 



Above Pond 



Figures 3.6-3.8 and 3.14-3.16 show the above pond diurnal data for March and August, 

 respectively. All data tables for the above figures are in Appendix A. Solar radiation generally 

 peaked before noon in the March study, but peaked just afler noon during the August study. 

 Relative humidity tended to be low during the day and significantly greater at night. The air 

 temperature behaves cyclically, peaking at about 2 to 4 PM and reaching a minimum around 3 

 to 6 AM. The wind direction data is evenly scattered at all angles except at Peck where the wind 

 predominantly came from the northeast. Wind speeds averaged between 0.4 to 0.6 m.s '. 



page 3.2 



