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<br />© 2004-2016 DKF Solutions Group, LLC. All rights reserved. Contractor Orientation: Page 2 of 2 <br /> <br /> <br /> <br />Sanitary Sewer Overflows <br />How to avoid them and what to do if you don’t <br />City of Redwood City <br /> <br />Public Works Services Department <br />1400 Broadway <br />Redwood City, California 94063 <br /> <br />www.redwoodcity.org <br />…when constructing or repairing sewer laterals: <br />Contact Building Permit Information at (650) <br />780-7350 for a permit and lateral specifications. <br />Check your work area. Make sure there is no <br />debris left in the sewer line before you backfill. <br />Avoid offset joints, which may make sewer lines <br />vulnerable to root intrusion and grease or debris <br />accumulation. Properly bed your joints and <br />don’t hammer tap. <br />What? <br /> <br />Where? <br /> <br />Why? <br /> <br />A sanitary sewer overflow (SSO) is a discharge of untreated <br />human and industrial waste before it reaches the wastewater <br />treatment facility. <br /> <br />SSOs usually occur through manholes, plumbing fixtures and <br />service cleanouts. <br /> <br />SSOs are usually caused by grease, debris, root balls, or <br />personal hygiene products blocking the sewer lines, or by <br />unusually high flow volume. <br />…when clearing plugged sewer laterals: <br />Remove root balls, grease blockages and any <br />other debris from the sewer <br />If you can’t prevent root balls, grease or debris <br />from entering the sewer main, call us at (650) <br />780-7464, so we can work with you to remove <br />the blockage and prevent blockages further <br />downstream <br />Use plenty of water to flush lines. <br />How to prevent SSOs: <br /> <br />If you cause or witness <br />an SSO, immediately contact: <br /> <br />City of <br />Redwood City <br />Business Hours: <br />(650) 780-7464 <br />After Hours (Police dispatch): <br />(650) 780-7190 <br /> <br />6.2.A. - Page 166