City of San Mateo Law Library
City of San Mateo Municipal Code.


(a) In the event that a user should be affected by a newly promulgated pretreatment standard or an existing discharge permit holder is reclassified as being subject to the categorical standards provided in the pretreatment regulations due to process changes, or an inspection reveals the presence of regulated processes, or new information becomes available that justifies or requires a reclassification, the user shall, within 90 days of the effective date of a categorical standard or reclassification, file a baseline monitoring report (BMR).

(b) Baseline monitoring reports shall contain the name and address of the user, including name of owner and operator; list of any environmental control permits held by the user; description of operations, including rate of production, standard industrial classification, and process schematic; estimated average and maximum daily flow to sanitary sewer from the regulated processes to allow use of the combined waste stream formula in the pretreatment regulations; identification of the categorical pretreatment standards applicable to each process; results of sampling and analysis of regulated pollutants in the discharge from each regulated process, or, in the case of new sources, an estimate of such pollutants.

(c) Baseline reports shall contain a statement, reviewed by an authorized representative of the user and certified by a qualified professional, indicating whether or not pretreatment standards are being met on a consistent basis, and, if not, whether additional operation and maintenance (O&M) and/or additional pretreatment is required to meet the pretreatment standards and requirements.

(d) If additional O&M and/or additional pretreatment, equipment or improvements will be required to meet the pretreatment regulations, the user's baseline monitoring report shall include a compliance time schedule which specifies the shortest time schedule by which the user will provide such additional pretreatment procedures or facilities, equipment or improvements to attain compliance. The compliance schedule shall include progress increments in the form of dates for the commencement and completion of major events leading to construction and operation of additional pretreatment required for the user to meet the applicable pretreatment standards. Such events may include, but are not limited to, hiring an engineer, completing preliminary and final plans, executing contracts for major components, commencing and completing construction, and beginning and conducting routine operation.

(e) Not later than 14 days following each date in the compliance schedule, the user shall submit a progress report to the Director including, at a minimum, whether or not it complied with the increment of progress, and if not, the reason for the delay, and if appropriate, the steps being taken to by the user to return to the established schedule.

(f) Within 90 days following the date for final compliance with applicable categorical pretreatment standards, or in the case of a new source following commencement of discharge, the user shall submit to the Director a report including discharge flow and pollutant concentration data for the regulated processes, and a statement, reviewed by the authorized representative of the user and certified by a qualified professional, indicating whether pretreatment standards are being met on a consistent basis, and if not, whether additional procedures or pretreatment equipment is required to meet pretreatment standards and requirements.