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5.8 Hydrosplitter Materials The hydrosplitter shall be manufactured to the functional specifications shown in the plans.If the manufacturer cannot meet the specifications shown,the Designer shall be notified in writing. Since the hydrosplitter(as specified)is an integral part of the design,no functional substitutions will be allowed. Workmanship The hydrosplitter shall be installed on a level, stable base in accordance with the approved plans. Placement, assembly, and installation shall be conducted to facilitate easy operation,maintenance, repair,removal and replacement.Each hydrosplitter shall be protected from vehicular traffic by an adequate barrier(either locally available boulders or metal tee posts).Drawings of any approved "as built" changes shall be provided to the Inspector by the Installer. 5.9 Subsurface Soil Absorption System -Standard Trenches Materials • Drain Media— Clean, washed, round rock meeting the criteria in OAR 340-071-0100(53) with a preference for uniformity biased toward the smaller end of the acceptable range (3/4- inch size) shall be durable and free of excess fines,or EZflow—Model 1202H-Geo. • Filter Fabric—Meeting the criteria in OAR 340-073-0041 to cover the drain media from one sidewall to the other and from the beginning to the end of each trench. • Standard Effluent Distribution Piping and Fittings-See Materials section under Piping and Plumbing. • Distribution Boxes—Manufactured as outlined in OAR 340-73-0035 and installed with tight pipe connections to minimize root intrusion and effluent exfiltration. Workmanship The Installer shall stake out the effluent distribution system and the routing of all related components prior to initiating construction.Any obstacles,non-conforming grades, or other factors that would prohibit installation or modified locations shall be flagged for review with the Designer. Any modifications will require approval by the Designer.Drawings of any approved"as built" changes noting pertinent dimensions,reference points, and elevations shall be provided to the Inspector by the Installer. The bottom of each drainfield trench and the distribution piping shall be level within a tolerance of plus or minus one inch from the point of beginning(point where the distribution header is connected to the distribution box).Total trench depth shall be within the minimum and maximum limits shown on the approved plans.Raking of the bottom and sidewalls of the trenches may be necessary to remove smearing created during excavation.Roots greater than 1/2-inch in diameter shall be cut at the edge of the excavation and removed. Valley—Albany,OR East Salem Seventh-Day Adventist Church I P&S Doc:2023240054 East Salem Church PS.docx November 2023 I Page 8