Frost days are those where the overnight recorded low is less than 32°F. In 
a normal year, the last spring frost is around May 15. In the fall, the first 
frost is usually toward the end of September. Summertime maximum 
temperatures are in the low eighties, often associated with a high relative 
humidity. 
Surrounding Animal and Human Populations 
The Township of is a largely undeveloped area with a population of . 
Only percent of the area in the Township is in residential 
development. Over percent of the acreage is either undeveloped or 
used agriculturally (8). The test site is approximately from the western 
edge of . 
Since the Township of is predominantly agricultural, there are no major 
forested areas in the vicinity. Only percent of the Township of 
acreage is still in woodlands (8). Tree species commonly found in this area 
are: six species of native oaks-black, bur, white, swamp white, hill's and 
red; paper and river birch; shagbark hickory; boxelder; hawthorn; willow; 
tamarack; silver maple; basswood; black cherry; American elm; and 
trembling aspen (23). 
Wildlife in the area represents a cross-section of typical southern Wisconsin 
animal life. Because of the lack of heavily forested areas, there is a 
scarcity of large animals. Common species include: opossum; striped 
skunk; wood chucks; ground, large-tree and flying squirrels; muskrat; gray 
and red fox; raccoon; badger; cotton tail rabbit and white-tail deer (13). 
Environmental Assessment 
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