§ 53.060  DISCHARGE OF PETROLEUM-CONTAMINATED GROUNDWATER FROM UNDERGROUND STORAGE TANK REMEDIATION SITES.
   No groundwater from the underground storage tank remediation sites shall be discharges into the sanitary sewer system until said groundwater has been sampled, the results reported to the city, and a permit issued by the city for the discharge.
   (A)   Sampling. The discharge shall be sampled prior to release into the sanitary sewer. If the discharge is to be a one-time discharge only, the water shall be sampled prior to discharge. If the discharge is continuous, the water shall be sampled at the start-up of the treatment system and at least weekly thereafter. In either case, the discharge quantity shall be metered.
   (B)   Reporting. The results of the sampling shall be reported to the city in writing at least monthly, or more often if requested by the city.
   (C)   Treatment system.  Information concerning the proposed treatment system shall be submitted to the city in writing prior to installation. The submittal shall include at least the following information: process flow schematics, design criteria, equipment manufacturer data and model numbers, proposed discharge point(s), operation and maintenance manual, emergency procedures, and sampling and reporting frequencies.
   (D)   Other permits. It shall be the responsibility of the treatment system operator to obtain any necessary permits in addition to the discharge permit (i.e., air quality).
   (E)   Pollutant discharge limits.
      (1)   In addition to the pollutant discharge limits set out in this subchapter, the following limits shall apply to groundwater from UST remediation sites:
 
BTE
*
Xylene
10.00 mg/l
Lead
0.50 mg/l
PAH
**
TPH
1.00 mg/l
Oil
25.00 mg/l
pH
6 to 9
TTO
2.13 mg/l
*   BTE = Benzene, toluene, and ethylbenzene. The total combined concentration of these three constituents shall not exceed 2.13 mg/1.
**   The combined total of the sixteen PAH constituents shall not exceed 2.13 mg/1.
BTEX, lead, oil and pH shall be evaluated for gasoline sites, diesel sites shall be evaluated for PAH, TPH, oil, and pH.
 
   (2)   In addition to the above limits, the following shall be monitored:
      (a)   At no time shall the single reading from a property calibrated explosion hazard monitoring meter reach 10% of the lower explosive limit (LEL), nor shall any two consecutive readings exceed 5% of the LEL.
      (b)   No material discharged may have a closed-cup flash point of less than 140°F.
      (c)   No free product, as defined in KRS 224.816, shall be discharged into the sanitary sewer.
      (d)   Dilution in the collection system shall not be permitted as a substitute for treatment.
   (F)   Compliance with sewer use ordinance. Nothing in this section shall be construed to relieve the permittee from compliance with the other provisions of this subchapter.
   (G)   Fees.  Fees required under this section shall be established from time to time.
(Ord. 95-08, passed 3-7-95; Am. Ord. 11-30, passed 12-13-11; Am. Ord. 13-25, passed 11-12-13)  Penalty, see § 53.999