Washington Administrative Code
Title 173 - Ecology, Department of (See also Titles 197, 317, 372, and 508)
Chapter 173-216 - State waste discharge permit program
Section 173-216-060 - Prohibited discharges
Universal Citation: WA Admin Code 173-216-060
Current through Register Vol. 24-06, March 15, 2024
(1) The discharge restrictions and prohibitions of dangerous waste regulations, chapter 173-303 WAC shall apply to this chapter.
(2) In addition, the following are prohibited:
(a) The discharge into a municipal
sewerage system of substances prohibited from such discharge by section 307 of
FWPCA.
(b) All of the following
discharges to a municipal sewerage system:
(i)
Waste materials that pass through the treatment works untreated or interfere
with its operation or performance.
(ii) Any liquids, solids or gases which by
reason of their nature or quantity are or may be sufficient either alone or by
interaction to cause fire or explosion or be capable of creating a public
nuisance or hazard to life or are sufficient to prevent entry into the sewers
for their maintenance and repair or be injurious in any other way to the
operation of the system or the operating personnel.
(iii) Solid or viscous substances which may
cause obstruction to the flow in a sewer or other interference with the
operation of the system.
(iv) Any
wastewater having a pH less than 5.0 or greater than 11.0 or having any other
corrosive property capable of causing damage or hazard to structures,
equipment, or personnel of the system, unless the system is specifically
designed to accommodate such discharge and the discharge is authorized by a
permit under this chapter.
(v)
Wastewater which would cause the influent temperature to exceed 40°C
(104°F), unless the system is specifically designed to accommodate such
discharge and the discharge is authorized by a permit under this chapter. In
any case, any wastewater having a temperature which will interfere with the
biological activity in the system is prohibited.
(vi) Any waste materials, including oxygen
demanding waste materials (BOD, etc.), released in either a slug load or
continuous discharge of such volume or strength as to cause interference to the
system.
(vii) Any of the following
discharges unless approved by the department under extraordinary circumstances,
such as lack of direct discharge alternatives due to combined sewer service or
need to augment sewage flows due to septic conditions:
(A) Noncontact cooling water in significant
volumes.
(B) Stormwater, and other
direct inflow sources.
(C)
Wastewaters significantly affecting system hydraulic loading, which do not
require treatment or would not be afforded a significant degree of treatment by
the system.
Statutory Authority: Chapter 43.21A RCW. 86-06-040 (Order 86-03), § 173-216-060, filed 3/4/86. Statutory Authority: Chapters 43.21A and 90.48 RCW. 83-23-073 (Order DE 83-29), § 173-216-060, filed 11/18/83.
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