The purpose of this article is to control discharges into the
public sewage collection system and wastewater treatment facility
that interfere with the operations of the system, cause blockage and
plugging of pipelines and heat exchangers, interfere with normal operation
of pumps and their controls, and contribute waste of a strength or
form that either causes a violation of the Sherwood Utility WPDES
permit or is beyond the treatment capability of the wastewater treatment
plant.
As used in this article, the following terms shall have the
meanings indicated:
BEST MANAGEMENT PRACTICE
Standard operating procedure of vehicle service facilities
that reduces or eliminates the discharge of oils, grease and gritty
material into the sanitary sewer system.
GREASE
Material composed primarily of oil and grease from animal,
vegetable or petroleum sources used for lubrication of cars, trucks,
construction equipment and other mechanical equipment. The terms "oil"
and "grease" shall be referred to as "grease" by definition.
GRITTY MATERIAL
Sand, gravel, road pavement and other solid particulate material
that can accumulate on equipment in its normal use.
SAND INTERCEPTOR
A device designed for separating and retaining waterborne
greases, grease complexes and gritty material prior to the wastewater
exiting the interceptor and entering the sanitary sewer collection
system and treatment system. These devices also serve to collect settleable
solids, generated by and from vehicle service activities, prior to
the water exiting the interceptor and entering the sanitary sewer
collection and treatment system.
USER
Any person or establishment who or which contributes, causes,
or permits the contribution of discharge of wastewater into the Sherwood
Utility wastewater collection and treatment system.
VEHICLE SERVICE FACILITY
Those establishments primarily engaged in servicing, maintaining,
storing, washing and any other activity that could result in the discharge
of oils, greases or gritty material into the wastewater collection
system. These facilities include but are not limited to garages, vehicle
service centers, fire stations, car washes, municipal garages and
any other sewer users as determined by the Sherwood Utility which
discharge applicable waste.
Chemical and biological treatments such as drain cleaners, enzymes,
bacteria, acid, or any other chemical or biological additives to emulsify
or remove grease are strictly prohibited.
The general permit fee referenced in §
15-32 above shall be as prescribed in Chapter
40, Fees and Penalties, of this Code. The permit shall be effective for a three-year period.
The Sherwood Utility may approve waiver of the permit requirement
for those vehicle service facilities that, after inspection by Sherwood
Utility personnel, pose no threat of discharging quantities of grease
and gritty materials into the public sewerage system that would interfere
with the efficient operation of the wastewater treatment facility.