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ADEC Division of Spill Prevention and Response Contaminated Sites Program
State of Alaska > DEC > SPAR > Contaminated Sites Program > Method Three & Cumulative Risk Calculator > Step One  
 
 
Method Three & Cumulative Risk Calculator

Please Note:
Your session in the calculator is limited to 3 hours of inactivity, whereupon your session will be reset and you'll have to start over at this page.

Select the zone for the site.  The definitions of these zones are as follows:

Under 40-inch Zone: South Central and the Interior
Over 40-inch Zone: Southeast
Arctic Zone: Areas north of latitude 68 degrees N, see definition in 18 AAC 75.990 (4)




Also, select whether the default residential exposure assumptions will be used, or if commercial/industrial exposure assumptions are appropriate. See the definitions of residential and commercial/industrial in 18 AAC 75.990[105] and 18 AAC 75.990 [19], respectively.



 
 
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