Condition Assessment & Rehabilitation Design
Marin City, California
West Yost performed a condition assessment of the District’s Marin City collection system and designed approximately 14,000 feet of sewer rehabilitation and repairs.
West Yost performed a condition assessment of the District’s Marin City collection system of approximately 32,000 feet of gravity sewers. West Yost reviewed CCTV inspection data and completed the condition assessment in accordance with National Steel and Shipbuilding Company’s (NASSCO’s) Pipeline Assessment Certification Program. West Yost is currently designing approximately 14,000-feet of sewer rehabilitation and repairs. About 8,000 feet of existing 6-inch pipe will be removed and replaced with new 8-inch pipe. Approximately 3,000 feet of sewer will be replaced and upsized using trenchless pipebursting construction methods and approximately 3,000 feet of sewer will be lined with the cured-in-place pipe (CIPP) method.