§ 122-182. Significant industrial user.

(a)

General. All significant industrial users (see definition of significant industrial users in section 122-26) that discharge wastewater effluent into the county wastewater system shall comply with the following subsections of this section.

(b)

Sampling manhole. In order to provide for accurate sampling and measurement of industrial wastes, each significant industrial user shall provide and maintain, on each of its industrial waste outlet sewers, a large manhole or sampling chamber to be located outside the plant. If inside the plant fence, there shall be a gate near the sampling manhole with a key furnished to the county. There shall be ample room provided in each sampling manhole to enable convenient inspection and sampling by the county, or its agent. In certain sampling manholes where noxious fumes may accumulate, the county may require a fume exhaust system to protect the life and health of the county employees who are required to enter the sampling manhole. The fume exhaust system should extract the fumes from the bottom of the manhole and provide not less than one air change per minute. The manhole shall include a waterproof 120V, single phase electrical outlet at or near the installation.

(c)

Provision for flow monitoring. Each sampling manhole shall contain a properly installed flow monitoring device such as a Parshall flume, Palmer-Bowlus flume or other similar device approved by the county. Plans of the proposed sampling manhole and monitoring device shall be prepared by a registered engineer and submitted to the county for review and approval. The CCWS director may require the industrial user to install additional equipment necessary to measure, record, and total flow. This equipment shall be maintained at all times in a safe and proper operating condition. Devices used to measure wastewater flow shall be calibrated periodically, but not less frequently than annually, to ensure their accuracy. Records of this calibration must be kept for a period of three years and submitted to the CCWS upon request.

(Ord. of 6-28-88, § 3-26-93; Ord. of 12-12-00; Amd. of 2-26-13)