§ 53.085. SAMPLE COLLECTION.

(A)

Except as indicated in subsection (B) below, the user must collect wastewater samples using 24-hour flow proportional composite collection techniques. In the event flow proportional sampling is not feasible, the Director may authorize, in writing, the use of time proportional sampling or a minimum of four (4) samples where the user demonstrates that this will provide a representative sample of the effluent being discharged. In addition, grab samples may be required to show compliance with instantaneous discharge limits. The City shall require the number of grab samples necessary to assess and assure compliance by industrial users with the applicable pretreatment standards and requirements. Sample collection shall meet the requirements of Rule 62-625.600(6)(c)—(f), F.A.C.

(B)

Samples for oil and grease, temperature, pH, cyanide, phenols, sulfides, and volatile organic compounds must be obtained using grab sample techniques.

(C)

All samples shall be representative of daily operations. Both daily maximum and average concentration (or mass, where required) shall be reported. In cases where the pretreatment standard requires compliance with a best management practice or pollution prevention alternative, the industrial user shall submit documentation as required by the City or the applicable standards to determine compliance with the standard.

(D)

Samples shall 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 industrial user shall measure flows and concentrations necessary to allow use of the combined waste stream formula of Rule 62-625.410(6), F.A.C., in order to evaluate compliance with the pretreatment standards. Where an alternate concentration or mass limit has been calculated in accordance with Rule 62-625.410(6), F.A.C., this adjusted limit, along with supporting data, shall be submitted to the City.

(Ord. No. 4-02, § 26, passed 2/19/02; Ord. No. 25-12, § 13, passed 8/21/12)