Or. Admin. R. 340-041-0256 - Water Quality Standards and Policies for this Basin
Current through Register Vol. 60, No. 12, December 1, 2021
(1) pH (hydrogen ion concentration). pH
values may not fall outside the range of 7.0 to 9.0. When greater than 25
percent of ambient measurements taken between June and September are greater
than pH 8.7, and as resources are available according to priorities set by the
Department, the Department will determine whether the values higher than 8.7
are anthropogenic or natural in origin.
(2) Total Dissolved Solids. Guide
concentrations listed below may not be exceeded unless otherwise specifically
authorized by DEQ upon such conditions as it may deem necessary to carry out
the general intent of this plan and to protect the beneficial uses set forth in
OAR
340-041-0250:
Snake River -- 750.0 mg/l.
(3)
Minimum Design Criteria for Treatment and Control of Sewage Wastes: a minimum
of secondary treatment or equivalent control and unless otherwise specifically
authorized by the Department, operation of all waste treatment and control
facilities at maximum practicable efficiency and effectiveness so as to
minimize waste discharges to public waters.
Notes
Stat. Auth.: ORS 468.020, 468B.030, 468B.035 & 468B.048
Stats. Implemented: ORS 468B.030, 468B.035 & 468B.048
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