1501 OAKES AVE 2022-05-03 - Laserfiche WebLink

Any additional comments: • Backwater valve was not secured tight at time of inspection. During inspection we cleaned unit and secured backwater valve with wing nut. Problems Identified 1) Backwater valve flap was not properly secured at time of inspection which could allow flow past the valve. Solution: During routine maintenance verify that backwater valve is properly seated and secured. 2) Significant grease in side sewer line could cause future backups. Solution: Have line jetted, and stop pouring excess grease down sink. 3) Some portions of the yard are sloped toward the house and could route surface water toward the basement. Solution: Grade yard so that it slopes away from house. 4) Downspouts are connected to the side sewer and could be a source of increased flow in a storm event. They are properly tied into the side sewer downstream of the backwater valve unit. Solution: Disconnect from underground system, extend 3 feet minimum from building, and route to splash blocks to reduce flow in side sewer. As-Built of Sewer and Plumbing See attached drawing. Comments • All down spouts that are connected to the side sewer could be disconnected and routed to splash blocks so that less flow is in the side sewer causing potential surcharge events. Where downspouts are routed to splash blocks the ground surface should be sloped away from the house. • Installing a grinder pump would provide increased protection from sewer backups beyond the protection a backwater valve can provide. S:\#Common\clerical\SIDE SEWER&PLUMBING INVESTIGATION\Final Reports\2nd Batch\1501 Oakes final.docx 5/3/2011