Specifications include, but are not limited to: The City of Port Arthur is seeking the service of a qualified consultant to sample for the development of the local limits based upon site-specific conditions in the City’s wastewater collection and treatment facilities and be consistent with EPA regulation, policy, and guidance. Local limits study will be developed and implemented by ordinance and through industrial waste discharge permits to prevent the introduction of pollutants into the collection system which cause interference with the operation of the POTW, pass through the POTW untreated, or interfere with the use and disposal options for biosolids, and/or guard against conditions that may adversely impact City worker health and safety. In the context of the WWTP upgrades, the City of Port Arthur issued a renewal to the TPDES permit requiring the re-evaluation of the local limits based upon a headwork analysis.