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(A) Definition of symbols and identification of available data:
1. The symbolic representation of the data shall be:
(a) BOD = 5 day biochemical oxygen demand
(b) SS = suspended solids
(c) Q = flow
The data which quantify the twelve (12) month average values for sewage treatment plant influent data are as follows:
(d) BOC = 152 mg/l
(e) SS = 181.4 mg/l
(f) Q = 450,000 g/d
2. The symbolic representation of the discharge data for the i'th industry shall be: n/a
(a) BOD
i
= 5 day biochemical oxygen demand
(b) SS
i
= suspended solids
(c) Q
i
= flow (Any user's 12 month average metered water usage should be adjusted for any quantities of water which are not discharged to the sewer system.)
The data which quantity the twelve (12) month average values for the discharge data for the industrial users of the sewerage works are as indicated in this chapter.
3. The symbolic representation of the twelve (12) month annual average values for the discharge data for the i'th nonindustrial user of the sewerage works shall be:
Q
i
= flow (Any user's 12 month average metered water usage should be adjusted for any quantities of water which are not discharged to the sewer system.)
and the five (5) day biochemical oxygen demand and the suspended solids concentrations are unknown.
4. The symbolic representation of the domestic population using the sewerage works shall be:
DP = domestic population
(B) Definition of symbols and computation of characteristic values for nonindustrial waste discharges:
1. The symbolic representation of the twelve (12) month average characteristic values for flow are:
(a) Q
NI
=
total nonindustrial discharge
(b) q
=
per capita nonindustrial discharge
and the computed values are:
n
(c) Q NI = [summation] q i = 450,000 g/d DP=5231
i=1
(c) Q NI = [summation] q i = 450,000 g/d DP=5231
i=1
(d) q = Q
NI
/DP = 86.03 g/cap/d
2. The symbolic representation of the twelve (12) month average characteristic values for five (5) day biochemical oxygen demand are:
(a) BOD = concentration of 5 day biochemical oxygen demand
(b) bod
=
per capita 5 day biochemical oxygen demand
and the computed values are:
n
(c) BOD = [(BOD x Q) - (summation BOD i x Q i )] ÷ Q NI = 152 mg/l
i =1
(c) BOD = [(BOD x Q) - (summation BOD i x Q i )] ÷ Q NI = 152 mg/l
i =1
n
(d) bod = [(BOD x Q) - (summation BOD i x Q i )] x 8.34 + DP = 0.109
#/cap/d i=1
(d) bod = [(BOD x Q) - (summation BOD i x Q i )] x 8.34 + DP = 0.109
#/cap/d i=1
3. The symbolic representation of the twelve (12) month average characteristic values for suspended solids are:
(a) SS = concentration of suspended solids
(b) ss = per capita suspended solids
and the computed values are:
n
(c) SS = [(SS x Q) - (summation SS i x Q i )] ÷ Q NI = 181.40 mg/l
i=1
(c) SS = [(SS x Q) - (summation SS i x Q i )] ÷ Q NI = 181.40 mg/l
i=1
n
(d) ss = [(SS x Q) - (summation SS i x Q i )] x 8.34 ÷ DP = 0.130 #/cap/d
i=1
(d) ss = [(SS x Q) - (summation SS i x Q i )] x 8.34 ÷ DP = 0.130 #/cap/d
i=1
(C) (Reserved for possible future use for definition of symbols and computation of industrial population equivalents.)
(D) Determination of user charges for operation, maintenance, and replacement:
1. Computation of unit costs:
(a) Where costs cannot be allocated among five (5) day biochemical oxygen demand, suspended solids, and flow:
(1) The symbolic representation of the cost for operation, maintenance, and replacement shall be:
$BOD,SS,Q -= total operation, maintenance, and replacement costs
(2) The symbolic representation of the per capita cost for operation, maintenance and replacement shall be:
$BOD,SS,Q/cap -= per capita operation, maintenance, and replacement costs
(3) The value of the per capita operation, maintenance, and replacement cost is:
$BOD,SS,Q/cap = $BOD,SS,Q ÷ [DP ÷ 1/3 x (summation PE
BODi
i=1
÷ PE SSi ÷ PE Pi ] = $30.45/year/person
i=1
÷ PE SSi ÷ PE Pi ] = $30.45/year/person
2. Computation of user charge rate per gallon of discharge for nonindustrial users of the sewerage works:
(a) Where costs cannot be allocated among five (5) day biochemical oxygen demand, suspended solids, and flow:
(1) The symbolic representation of the user charge rate per gallon of discharge for nonindustrial users shall be:
$/g
=
user charge rate per gallon of discharge
(2) The value of the user charge rate per gallon of discharge is:
$/g = $BOD,SS,Q/cap x DP ÷ Q
NI
= $0.00094/g
3. Summary of user charges:
(a) For nonindustrial users and for the normal strength component of wastes from industrial users:
(1) The symbolic representation of the user charge for normal strength wastes, as contained in this chapter is:
CU
=
user charge
(2) The relationship between "CU" and "$/g" is as follows:
CU = $/g x 1000
inasmuch as "CU" is a charge per one thousand (1,000) gallons of sewage discharge
(b) For the higher than normal strength component of wastes from industrial users:
(1) The symbolic representation of the surcharge for higher than normal strength wastes, as contained in this chapter is:
CS
=
surcharge for an industrial user
(2) The relationship between "CS" and "SC
i
" is as follows:
CS = SC
i
(Ord. 77-336, 2-7-1977)
(A) Any person may transport and dump raw sewage, at his own expense, at the place provided therefor at the sewage disposal plant maintained by the city. It shall be unlawful, however, to dump raw sewage at the sewage disposal plant which contains prohibited substances not permitted or allowed to flow in the sanitary sewer system of the city under section 7-4-6 of this chapter.
(B) The fee for such dumping of raw sewage shall be one dollar ($1.00) per one hundred (100) gallons.
(C) In addition to other penalties, any person who violates this section by dumping raw sewage containing prohibited substances as defined in said section 7-4-6 of this chapter shall not be permitted to use the sanitary sewer system and sewage disposal plant of the city, or any part thereof, until satisfactory bond and surety shall be given to the city that such violation shall not be repeated. (Ord. 75-271, 8-4-1975; amd. Ord. 77-336, 2-7-1977)
(A) Any person found to be violating any provision of this chapter except sections 7-4-2, 7-4-3, 7-4-4, 7-4-5, 7-4-6 and 7-4-8 of this chapter shall be served by the city with written notice stating the nature of the violation and providing a reasonable time limit for the satisfactory correction thereof. The offender shall, within the period of time stated in such notice, permanently cease all violations. The city may revoke any permit for sewage disposal as a result of any violation of any provision of this chapter.
(B) Any person who shall continue any violation beyond the time limit provided for in subsection (A) of this section or any person who shall violate any other sections of this chapter shall be guilty of a misdemeanor, and on conviction thereof shall be fined in the amount not exceeding five hundred dollars ($500.00) for each violation. Each day in which any such violation shall continue shall be deemed a separate offense.
(C) Any person violating any of the provisions of this chapter shall become liable to the city by reason of such violation.
(D) In addition to other penalties, any person who violates section 7-4-5, 7-4-6, or 7-4-7 of this chapter shall not be permitted to use the sanitary sewer system of the city, or any part thereof, until satisfactory bond and surety shall be given to the city that such violation shall not be repeated; and such person shall be disconnected from the sanitary sewer system of the city until the condition causing the violation has been remedied in accordance with the terms of sections 7-4-5, 7-4-6 and 7-4-7 of this chapter. (Ord. 77-336, 2-7-1977)
If any section, paragraph, clause or provision of this chapter shall be held to be invalid or unenforceable for any reason, the invalidity or unenforceability of such section, paragraph, clause or provision shall not affect any of the remaining provisions of this chapter. (Ord. 77-336, 2-7-1977)