RICE COUNTY, Kan. (KSNW) – Rice County fire crews are on the scene of a building fire at the Jacam Chemical facility. According to Rice County officials, at least four fire departments are battling the blaze at the north plant. Ave Q is closed from K-14 to 18th according to Rice County Emergency Communications. All employees are accounted for and safe. KSNT News’ sister station KSNW-TV has a crew near the scene.
There are at least two fire departments battling a fire in a Jacam Chemical facility plant. 
The context says "at least four" fire departments are battling the fire, so it is also correct that "at least two" are battling it. 
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(z0 / battle-01
    :ARG0 (z1 / department
              :quant (z2 / at-least
                         :op1 2)
              :mod (z3 / fire))
    :ARG1 (z4 / fire
              :location (z5 / plant
                            :mod (z6 / facility
                                     :poss (z7 / company
                                               :name (z8 / name
                                                         :op1 "Jacam"
                                                         :op2 "Chemical"))))))
There are at least two fire departments battling a fire in a Jacam Chemical facility plant .
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z0 :ARG1 z4
z8 :op1 2
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