Table 3. 

 Chloride Balance for New Hampshire, 1970 



Inflow 



Atmospheric Precipitation and Dry Falloutl^ 

 Human Activity?.^ 

 Highway Deicing Saltl^ 

 Town Road Deicing Saltl/ 



Chloride, Tons 



14,500 



7,400 



9 1 ,000 



20,000 



132,900 



Outflow 



Surface and Groundwater^./ 



135,900 



Change in Storage^/ 



3,000 



1. 0.5 mg/£,chloride in 43 inches of precipitation on 9,300 square miles. 



2. 20 pounds per capita for 7 38,000 people. 



3. 150,000 tons sodium chloride. Approximate average for period leading into 1970. 



4. Estimate based on assumed 3 3,000 tons sodium chloride. 



5. Calculated from area weighted mean of 8.7 mg/£^ from Table 2 in 23 inches of runoff 

 from 9,300 square miles. 



6. There more likely is an increase in storage, but this factor is not easy to evaluate because 

 of uncertainties in the balance. 



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