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The City of Portland, Oregon

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Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

1120 SW 5th Avenue, Suite 1000, Portland, OR 97204

Willamette River/Portland Harbor Superfund Charges

(authorized by City Code Section 17.36.070)*

1. Sanitary Volume Component

$0.06 per 100 cubic feet of water consumption

2. Impervious Area Component

$0.22 per 1000 square feet of impervious area per month

*The rates above apply to all users, residential and non-residential. The impervious area component is calculated for the following classes of residential user based on the following class-average values of impervious area.

Single Family and Duplex Residences

2,400 square feet of impervious area per parcel

3-Plex and 4-Plex Residences

1,000 square feet of impervious area per unit