2019.02.04 CC Packet - Laserfiche WebLink

Home

Effective April 28, 2015 Chapter Four Subsurface Sewage Treatment System Regulations (15) Carbonaceous biochemical oxygen demand or CBOD5. "Carbonaceous biochemical oxygen demand" or "CBOD5" means the measure of the amount of oxygen required by bacteria while stabilizing, digesting, or treating organic matter under aerobic conditions over a five-day incubation period while in the presence of a chemical inhibitor to block nitrification. CBOD5 is commonly expressed in milligrams per liter (mg/L). (16) Certificate of compliance. "Certificate of compliance" means a document, written after a compliance inspection, certifying that a system is in compliance at the time of inspection with applicable requirements. (17) Certified. "Certified" means an individual is included on the Agency's SSTS certification list and is qualified to design, install, maintain, repair, pump, operate, or inspect an SSTS as appropriate with the individual's qualifications. A certified individual who is working under a license is subject to the obligations of the license. Certified individuals were previously known as registered professionals. (18) Certified statement. "Certified statement" means a statement signed by a certified individual, apprentice, or qualified employee under Minnesota Rules, Chapter 7083 certifying that the licensed business or qualified employee completed the work in accordance with applicable requirements. (19) Cesspool. "Cesspool" means an underground pit, receptacle, leaching pit, drywell, seepage pit, or seepage tank that receives sewage and leaches sewage into the surrounding soil, bedrock, or other soil materials. Cesspools include sewage tanks that were designed to be watertight, but subsequently leak below the designed operating depth. (20) Clean sand. "Clean sand" means a soil fill material required to be used in mounds. The standards for clean sand are set forth in Section 17.3 (3)(C). (21) Commissioner. "Commissioner" means the commissioner of the Minnesota Pollution Control Agency. (22) Compliance inspection. "Compliance inspection" means an evaluation, investigation, inspection, or other such process for the purpose of issuing a certificate of compliance or notice of noncompliance. (23) Contour Loading Rate. "Contour Loading Rate" means the amount of effluent loaded to the soil per length of the dispersal unit or units along the single hillslope along the contour. The contour loading rate is determined on the relationship between the vertical and horizontal water movement in the soil and is based on the permeability difference between the absorption area and any deeper horizons, the depth between the absorption area and the change in permeability; and the land slope. (24) Department. "Department" means the Washington County Department of Public Health and Environment. (25) Design flow "Design flow" means the estimated or measured flow used to design the SSTS. (26) Disinfection. "Disinfection" means the process of destroying or inactivating pathogenic microorganisms in sewage to render them noninfectious. (27) Distinct. "Distinct" means a soil color that is not faint as described in Section 2.2 (39). (28) Distribution box. "Distribution box" means a device intended to distribute sewage tank effluent concurrently and equally by gravity to multiple segments of a soil dispersal system. (29) Distribution device. "Distribution device" means a device used to receive and transfer effluent from supply pipes to distribution pipes or downslope supply pipes, or both. These devices include, but are not limited to, drop boxes, valve boxes, distribution boxes, or manifolds. (30) Distribution medium. "Distribution medium" means the material used to provide void space in a dispersal component, through which effluent flows and is stored prior to infiltration. Distribution media includes, but is not limited to, drainfield rock, polystyrene beads, chambers, and gravelless pipe. (31) Distribution pipes. "Distribution pipes" means perforated pipes that distribute effluent within a distribution medium. (32) Domestic strength waste. "Domestic strength waste" means liquid waste produced by toilets, bathing, laundry, culinary operations, and the floor drains associated with these sources, and 11 Washington County Development Code