Environmental Engineering and Remediation
Underground Storage Tanks, Environmental Assessments, Compliance, Other

Engineering Evaluation and Condition Assessment (EE/CA), Sanitary Sewer Collection System

Marine Corps Base (MCB) Camp Pendleton, Oceanside, CA

GCE was subcontracted to monitor the field work portion of the EE/CA of the MCB Camp Pendleton sanitary sewer collection system. The project objective was to optimize the Base's operations and maintenance (O&M) program and to update the sanitary sewer asset records in the MCB Camp Pendleton geographic information system (GIS) database. The National Pollutant Discharge Elimination System (NPDES) permit for the Southern Region Tertiary Treatment Plant (SRTTP) requires that MCB Camp Pendleton take all feasible steps to eliminate sanitary sewer overflows (SSOs), including identification of existing sewer collection system assets, regular evaluation of the sewer system to identify problems that can result in SSOs, and assess need for operational and structural improvements.

MCB Camp Pendleton's approach for SSO prevention had been to remove debris from each sewer pipe at an increased frequency, ranging from six months to four years. However, more frequent maintenance was costly and may not have been required for all sewer mains. GCE supported the Base in optimizing their maintenance program by assessing conditions and conducting engineering evaluations of 250,000 feet of sewer mains by analyzing pipeline debris and by performing closed circuit television (CCTV) inspection of up to 180,000 feet of sewer mains, and by performing visual inspection and condition assessment of all sewer manholes associated with the sewer mains.