a. Private collection system sewers shall be designed in conformance with main line standards specified herein when plumbing code grade requirements of Oregon Plumbing Specialty Code Section 1106 cannot be met.
1) A manhole is required at the connection to the City system.
2) A metering manhole may be required at the property line upstream from the manhole connection at the City main.
b. PWDS 4.18, Sewer Service Laterals, must be used for sewer service lines in the system with the following exceptions:
1) The minimum size sewer line upstream of the monitoring manhole structure shall be six (6) inches.
c. See requirements and criteria under PWDS 4.18.a.9 relating to private sewer pump stations.