A. Surcharge Rate: For waste strengths above normal strength of two hundred (200) mg/l BOD and two hundred fifty (250) mg/l SS, a surcharge of twenty four cents ($0.24) per pound BOD and eight cents ($0.08) per pound SS shall be applied. The surcharge for each monthly period shall be computed by the following formulae:
SCBOD = (x-200) x ^ x 0.0000083 x $0.24
SCSS = (y-250) x ^ x 0.0000083 x $0.08
where:
SCBOD - surcharge above the basic user rate for BOD concentration above 200 mg/l.
SCSS - surcharge above the basic user rate for SS concentration above 250 mg/l.
x = average BOD concentration mg/l.
y = average SS concentration in mg/l.
^ = one month metered water flow adjusted for appropriate losses in gallons.
B. Computation Of Surcharge: The concentration of wastes used for computing surcharges shall be established by waste sampling. Waste sampling shall be performed as often as may be deemed necessary by the City Council and shall be binding as a basis for surcharge.
C. Computation Of Total Wastewater User Charge: The wastewater user charge shall be computed by the following formula:
CW = MC + BC + SCBOD + SCSS
where:
CW = total wastewater user charge.
MC = minimum charge as set out in Section 8-2-8-3 of this Chapter.
BC = basic user charge as set out in Section 8-2-8-3 of this Chapter.
SCBOD surcharge for BOD as computed in subsection A of this Section.
SCSS surcharge for SS as computed in subsection A of this Section. (Ord. 146, 1980)