§ 98-351. Baseline monitoring reports.

Within 180 days after the effective date of a categorical pretreatment standard, existing industrial users subject to such categorical pretreatment standards and currently discharging to or scheduled to discharge to the city POTW shall be required to submit to the director a report which contains the information listed in the following sections. Where reports containing this information already have been submitted to the director of EPA, region 6, in compliance with the requirement of 40 CFR 128.140(b) (1977), the industrial user will not be required to submit this information again. At least 90 days prior to commencement of discharge, new sources and sources that become industrial users subsequent to the promulgation of an applicable categorical standard, shall be required to submit to the director a report which contains the information listed in subsections (1) through (5) of this section. New sources shall also be required to include in this report information on the method of pretreatment the source intends to use to meet applicable pretreatment standards. New sources shall give estimates of the information requested in subsections (4) and (5) of this section. The information required is as follows:

(1)

Identifying information. The user shall submit the name and address of the facility including the name of the operator and owner;

(2)

Permits. The user shall submit a list of any environmental control permits held by or for the facility;

(3)

Description of operations. The user shall submit a brief description of the nature, average rate of production and standard industrial classification of the operation carried out by such industrial user. This description should include a schematic process diagram which indicates points of discharge to the POTW from the regulated processes;

(4)

Flow measurement. The user shall submit information showing the measured average daily and maximum daily flow, in gallons per day, to the POTW from each of the following:

a.

Regulated process streams; and

b.

Other streams as necessary to allow use of the combined wastestream formula of 40 CFR 403.6(e).

The director may allow for verified estimates of these flows where justified by cost or feasibility considerations. Such estimates shall be verified by a certified professional engineer;

(5)

Measurement of pollutants:

a.

The user shall identify the pretreatment standards applicable to each regulated process;

b.

In addition, the user shall submit the results of sampling and analysis, identifying the nature and concentration or mass, where required by standard or director, of regulated pollutants in the discharge from each regulated process. Both daily maximum and average concentration or mass, where required, shall be reported. The sample shall be representative of daily operations;

c.

Grab samples must be used for pH, cyanide, total phenols, oil and grease, sulfide and volatile organics. For all other pollutants, 24-hour composite samples must be obtained through flow-proportional composite sampling techniques where feasible. The director may waive flow-proportional composite sampling for any industrial user that demonstrates that flow-proportional sampling is not feasible due to the nature of the operation. In such cases, samples may be obtained through time-proportional composite sampling techniques or through a minimum of four grab samples where the user demonstrates to a reasonable certainty that this will provide a representative sample of the effluent being discharged;

d.

The user shall take a minimum of one representative sample to compile that data necessary to comply with the requirements of this subsection;

e.

Samples should be taken immediately downstream from pretreatment facilities if such exist or immediately downstream from the regulated process if no pretreatment exists. If other wastewaters are mixed with the regulated wastewater prior to pretreatment, the user should measure the flows and concentrations necessary to allow use of the combined wastestream formula of 40 CFR 403.6(e) in order to evaluate compliance with the pretreatment standards. Where an alternate concentration or mass limit has been calculated in accordance with 40 CFR 403.6(e), this adjusted limit along with supporting data shall be submitted to the director;

f.

Sampling and analysis shall be performed in accordance with the techniques prescribed in 40 CFR 136 and amendments thereto. Where 40 CFR 136 does not contain sampling or analytical techniques for the pollutant in question, or where the administrator determines that the 40 CFR 136 sampling and analytical techniques are inappropriate for the pollutant in question, sampling and analysis shall be performed by using methodology approved by the administrator;

g.

The director may allow the submission of a baseline report which utilizes only historical data so long as the data provides information sufficient to determine the need for industrial pretreatment measures;

h.

The baseline report shall indicate the time, date and place of sampling, and methods of analysis, and shall certify that such sampling and analysis is representative of normal work cycles and expected pollutant discharges to the POTW;

(6)

Certification. A statement shall be submitted and reviewed by an authorized representative of the industrial user, as defined in this article, and certified by a qualified professional, indicating whether pretreatment standards are being met on a consistent basis, and, if not, whether additional O&M or additional pretreatment is required for the industrial user to meet the pretreatment standards and requirements; and

(7)

Sampling and analysis. All sampling and analysis required by this division shall be performed by an independent laboratory that has been approved by the director. All costs of such sampling and analysis shall be borne by the user.

(Code 1967, § 34-59(a); Ord. No. 6191, § 9, 3-26-92; Ord. No. 8118, § 1, 10-23-97)