This referral report supports the filing of a proof of claim in North Western Corporation's bankruptcy petition. The debtor is a potentially responsible party under section 107 of CERCLA because of its ownership of the Milltown Dam and the surrounding area. The dam is releasing hazardous substances at and from the facility. The debtor is also liable because of its arranger status for the same facility. The debtor may also be liable for claims under the CAA and we suspect violations of the PSD requirements at 2 power plants - one in South Dakota and one in Montana.