The Director of Utilities may periodically require users to
submit information or update information on the nature and characteristics
of its wastewater. Failure to submit this survey information within
30 days of the request shall be considered a violation of this title.
(Ord. 3895 § 3, 2008)
The Director of Utilities may periodically require any user
to sample their wastewater discharge or submit to the wastewater sampling
by the Director of Utilities in establishing the appropriate class
of the user and/or to evaluate compliance with the standards and requirements
of this title.
(A) Sample collection, except as indicated in subsection
(B), below, the user shall collect wastewater samples using flow proportional composite collection techniques. In the event flow proportional sampling is infeasible, the Director of Utilities may authorize the use of time proportional sampling or grab sampling over the production day 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 daily maximum discharge limits.
(B) Samples should be taken for Federal 40 CFR limits, for categorical
industries immediately downstream from pre-treatment 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 shall measure the flows
and concentrations necessary to allow use of the combined wastestream
formula in order to evaluate compliance with the pretreatment standards.
Sampling must be conducted in accordance with the requirements set
forth in 40 CFR Part 403.12(g)(3) and (4).
(Ord. 3895 § 3, 2008; Ord. 2019-016 § 10)
All pollutant analyses, including sampling techniques, to be
submitted as part of a wastewater discharge permit application or
required report will be performed in accordance with the techniques
prescribed in 40 CFR Part 136, unless otherwise specified in an applicable
categorical pretreatment standard. If 40 CFR Part 136 does not contain
sampling or analytical techniques for the pollutant in question, sampling
and analyses must be performed in accordance with procedures approved
by EPA. All analyses shall be performed by a laboratory(ies) certified
by the State for the specified pollutants and matrix to be analyzed.
(Ord. 3895 § 3, 2008)