•• • 



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o 



If) 



o 



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in 

 in 



o 

 in 



in 

 o 



o 

 o 



o 





o 



• • • 



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I I I I 



J L 



JJe 



in 



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in 



CM 



o 



CM 

 O 



Chloride (mg/l) 



<— o> 



Figure 7 



Chloride for 1918-1970 at Laconia Surface Water Supply 



19 



