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disturbed soil surfaces shall be protected from erosion with a 2-inch blanket of 3/4-inch minus crushed rock and/or re-seeded with a locally adapted mixture of annual and perennial grasses.It is anticipated that any excess soil from tank excavations will remain on Site. Close attention to grades and relative elevations is critical to ensure adequate fall where gravity flow is required. The term"compacted"is used in several places in the plans and specifications.The intent of this term is to reduce the potential for settling in or near the affected area after system components are in place.Any measurable settling,and any damage caused by said settling,that occurs within one year after construction is completed,shall be repaired promptly by the Installer at no cost to the Owner. 5.2 Piping and Plumbing Materials The following materials,or considered equivalent, are approved for the purposes of this project: • Building Sewer(Drainage System)Pipe and Fittings-Type PSM(PVC),ASTM D-3034 or Schedule 40 PVC or ABS DWV,as specified on the plans. • Effluent Sewer Pipe and Fittings-Either type ASTM D-3034, Schedule 40 or PSM PVC or ABS DWV,as specified on the plans. • Pressure Pipe and Fittings-Either Schedule 40 or Class 200 PVC 1120(ASTM D-2241)or High Density Polyethylene(HDPE)SDR 11,as specified on the plans. Workmanship All building sewers,effluent sewers,and force mains shall be placed on a uniformly graded,stable base of either undisturbed soil,selected soil backfill,or other specified granular material. Each pipe shall be uniformly supported along its entire length to control settling and stresses during and following backfill. Unless authorized by the Designer,thrust blocks shall be installed anywhere a force main makes a bend greater than 45 degrees.Pipe markings shall be oriented at 12 o'clock to allow ready inspection after installation,prior to backfill.All gravity building sewers,gravity effluent sewers,pressure effluent sewers, and manifold piping to each distribution box shall be marked with tracer wire for future reference. The building sewer shall be laid at a uniform grade no less than 1/4-inch fall per foot of run(%s-inch where specifically noted)and shall be watertight.The Installer shall be responsible for obtaining plumbing permits and inspections from the appropriate local building department,as necessary. Gravity effluent sewers shall be laid at a uniform grade no less than 4 inches per 100 feet unless specifically called out on the drawings.A minimum of 12 inches of cover shall be provided over horizontal gravity piping after backfill(settled)in areas not subject to vehicular traffic.A minimum of 30 inches of cover shall be provided over horizontal pressure piping after backfill(settled) and in areas subject to traffic,unless sleeved in a protective steel sleeve or other approved protection.In such cases,all bedding and backfill shall bei-inch minus crushed rock.An air release/vacuum breaker must be installed at each high point along the force main if it cannot be laid at a continuous level to uphill grade.Backfill within trenches under asphalt shall be compacted prior to repaving to prevent subsequent settling. All gravity and pressure effluent piping shall be watertight.Gravity effluent sewer piping shall be tested with a minimum of 15 feet of static water pressure.The test will be considered acceptable if no CES -Albany,OR St.Innocent Winery and Tasting Room I P&S Doc:2018240028 St.Innocent Winery Plans&Specs May 2018 I Page 3