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Existing systems that -are "t performing or being operated in accordance with their issued operating permit are also noncompliant. New system inspection For newSSTS construction, the system must: • Be designed to all applicable federal, state, and. local regulations, a.nd meet established setback distances • Prevent sewage or sewage effluent contact.with humans, insects, or vermin • Treat and disperse sewage safely, while avoiding physical injury or harm • Maintain an unsaturated zone in the soil between the soil dispersal system and the bedrock or seasonally saturated soil (also. called the :water table) during loading of effluent. All. n ewly co nstructed systems must have the soil's unsaturated zone .(also called thevertical separation distance) verified • Not be located in floodways. In addition, any replacement components for an existing.SSTS must meet new construction criteria, according to local:ordinances. Recording inspections and certifying compliance Inspectors must record all methods they use to determine system components or performance on'the MPCA compliance inspection form. Local governments may have additional farms, which can. be.attached'to the MPCA form. The inspector must submit the certificate of compliance (COC) .or notice of noncompliance (NON) to the system owner (or ❑wner's agent) and the local government unit within 15.business days after the inspection date. The. COC for a newly constructed system certifies that the:system complies with current state and. focal requirements. The COC for an exist!ng.system certifies cornpifance with minimal. public health a nd. groundwate r protection requirements,C.hanges in usage, such as increasing a building's occupancy, can changethe performance of a SST5 but not necessarily change the. compliance status.:A COC is.valid for three years for an existing system and five years for a newly constructed SSTS. Existing.systems,that are found to be. imminent threats to public health.or safety or failing to protect groundwater are given a NON and. a timeframe for upgrades,. repairs., or replacement. The timeframe for ITPHS systems is 10 moriths. maximum under state law, though local ordinances may dictate shorter tirneframes. The timeframe. for upgrading a FTPGW system is set by IocaI ordinances. When are inspections required? Existing systems Under state .law, an inspection must be conducted when.a bedroom. is added to a dwelling if the local unit of government regulates that activity. Local ordinances may specify other events that trigger inspections, such as when a property is sold or a. building permit is sought. A lending institution or a. prospective. buyer may also request a compliance.inspection. New systems. Compliance inspections for new or replacement systems. are required: .. For all new constructionAhd replacement of SSTS In designated shoreland areas, when, 6nybuilding permit or variance is requested. If the local government administers a perm it for bed room. additions (the system must be inspected before the permit is issued) Page 2'of 3 June.2019 1. wq-ww1.sts4-39.