Comprehensive Sewer Studies and Remediation Programs Improve Capacity

Project Name
Upper Coal Creek Remediation Plan
City of Tulsa
Tulsa, Oklahoma
Service Period
2007 - Ongoing
  • temp
  • temp2

In December 1990, the Oklahoma State Health Department (now ODEQ) placed the City of Tulsa under a Consent Order due to wastewater overflows and system backups (SSOs). The City hired RJN in 1993 to conduct a comprehensive sewer study, including hydraulic modeling, of the Coal Creek sanitary sewer basin. RJN followed the study with a plan for design of priority 1 through 4 capacity improvements throughout the basin to eliminate chronic rain-induced SSOs. RJN has continued to work for the City providing construction oversight and design services and is currently providing design services for the remaining priority 4 improvements to increase system capacity through a Specific Remediation Plan Program in the Upper Coal Creek Basin and extend services in the Spunky Creek Basin. Following the capacity improvements, RJN will recommend a follow-up Sanitary Sewer Evaluation Study (SSES) and sanitary sewer rehabilitation program to protect the City’s sanitary sewer interceptor investments. The local staff in the Tulsa office is proud to assist the City of Tulsa with its wastewater collection needs.

Project Metrics

Design of:
  • 5,300 LF of 8- to 18-inch pipe
  • 10,500 LF of 8-inch sewer
  • 4,805 LF of 30- to 36-inch sanitary sewer
  • 6,088 LF of 30-inch pipe
  • 3,600 LF of 8- to 18-inch pipe
  • 900 LF of 12-inch pipe


  • Surveys
  • Hydraulic modeling
  • Design
  • Permitting
  • Construction observation and management