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Sewer Report <br /> Material: pvc <br /> Sewer Length: 75 feet <br /> Condition: Newer installation but holds water in spots very flat install. <br /> Explain: Bathroom installed below house for commercial use they probably needed line <br /> flat to connect to existing sewer stub. <br /> Recommend: Install backwater valve on south side near parking in gravel area (see <br /> attached picture) only after side sewer is replaced with a minimum of 1-2%. <br /> Any additional comments: <br /> • Espresso stand seems to be connected to same side sewer line. There is a catch <br /> basin on the side sewer line between the espresso stand and the main line. <br /> Since there are no below grade fixtures in the espresso stand it is unlikely that it <br /> would be affected by a surcharge event. <br /> • Caution: Backwater valve will not function as effectively on a side sewer that has <br /> does not have a 1-2% minimum grade (this is per the manufacturer's <br /> specifications). To ensure backwater valve functions correctly the side sewer <br /> should be re-graded with a minimum 1-2% slope. <br /> Problems Identified <br /> 1) No Backwater Valve at this location <br /> Solution: Install Backwater valve at point indicated in the attached sketch. Side sewer <br /> needs to be replaced with sufficient slope prior to installing a backwater valve so that <br /> the valve can function properly. <br /> 2) Very flat side sewer line <br /> Solution: Re-grade the line open trenching and replacing side sewer with a minimum of <br /> 1-2% slope all the way to the main sewer line. <br /> As-Built of Sewer and Plumbing <br /> See attached sketch <br />