Emergency cleaning and repairs to approximately 40 feet of 8 inch diameter ductile iron between Manhole Nos. 475 and 530 on gate Book page L16S. This section of exposed pipe crosses the San Diego River, cracked in several places, and needs immediate repair and/or replacement. Access will be via existing dirt path to river bank on east side by the Pacific Estuarine Research Laboratory. Work will involve approximately 20 days; the repairs will be done in two stages. The first stage is to clear the debris and vegetation in the immediate vicinity of the pipe. The second stage of this repair will be to replace the pipe spanning the river. The staging area will be located on Alvarado Court. All work will be monitored by a biologist and erosion control measures will be implimented.
This section of ductile iron sewer pipeline has visible cracks and since it is spanning the San Diego River, could experience a break from flood waters. Due to these reasons, there is a high potential for sewage spills. In the event of a sewage spill, a significant amunt of flow would reach the Pacific Ocean jeapordizing public health and safety.