§ 122-191. Wastewater discharge permits for discharges from groundwater remediation sites.

(a)

Permit required. All groundwater remediation projects that discharge to the sewer shall be required to possess a wastewater discharge permit before connecting to or contributing to the county wastewater system as required in section 122-153.

(b)

Permit conditions. The permitting process shall require that the following discharge criteria and permit conditions must be met for continued use of the sewer system.

(1)

Discharge limits. Local limits will be used for permitted discharge limits for the pollutants of concern for the site.

(2)

Sampling frequency. Sites that are not occupied or staffed by the holder of the remediation permit, gas stations, closed industrial sites or sites which the remediation is the responsibility of another party, may be required to monitor the discharge on a more frequent schedule than sites that are occupied or staffed by the holder of the remediation permit, for select parameters and a monthly basis for all other permitted parameters.

a.

Start-up (first 30 days of operation). All remediation sites during the first 30 days of operation of the remediation system and remediation sites that are restarted after 90 days of inactivity will be required to sample at a more frequent schedule than their normal sampling frequency. This sampling schedule will be delineated in and determined by the discharge permit.

b.

On-line (after initial 30-day start-up of treatment system). After 30-day initial start-up period, the standard sampling schedule in the permit shall be followed.

(c)

General conditions.

(1)

Air quality permit. If an air stripping device is to be used at a site, an air quality permit issued by the state EPD must be obtained, if necessary, by the permittee prior to issuance of a wastewater discharge permit. A copy of the air quality permit must be submitted with the wastewater discharge permit application.

(2)

Metering. The treated water must pass through a flow meter and an effluent sampling device before discharge to the sanitary sewer.

(3)

Application for permit. The permit application shall be accompanied by:

a.

Plans and specifications. A set of plans and specifications signed by a professional engineer registered in the state and include the following:

1.

Plot plan of the site, showing all buildings, sewers, storm sewers, natural streams, sewer connection points, process equipment locations and meter locations.

2.

A schematic diagram of the treatment system and the design criteria used to develop the treatment system.

3.

Operating procedures, including emergency shutdown procedures.

b.

Corrective action plan (CAP). The most recent CAP must be included with the permit application.

c.

Sampling plan. Based on the site history and CAP, at minimum the parameters identified in the CAP shall be sampled for, as well as potential breakdown products from the spilled materials. The sampling for the CAP may be used to satisfy the sampling requirements contained in the permit application if the analysis was completed by a certified laboratory and reported within a year of applying for a discharge permit with the county water system. The county water system reserves the right to request sampling for any additional parameters and to request resampling of any or all parameters contained in the CAP.

(4)

Site security. Permitted sites that are unmanned or accessible to the public (for example, closed industrial sites or gas stations) shall be fenced and locked to maintain adequate security. The county shall be provided with a copy of the key.

(5)

Pump control. The master pump control for sites that are unmanned or accessible to the public (for example, closed industrial sites or gas stations) shall be clearly labeled and must be accessible to the permitting agency at all times.

(6)

Reporting frequency. The permittee shall report, on a monthly basis, to the county the following information:

a.

Sample data for the preceding month.

b.

Flow data for the preceding month on a daily basis.

c.

Off-site disposal of any material, to include what the material was, who disposed of it, the destination and mode of transportation.

d.

All violations must be reported within 24 hours of first becoming aware of the violation.

(7)

Inspection prior to permit issuance. The facility shall be inspected by a member of the county's environmental compliance program prior to issuance of a discharge permit.

(Ord. of 6-28-88, § 3-26-102; Ord. of 12-12-00; Amd. of 2-26-13)