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July 18, 9-10 a.m.
Neuse River East Parallel Interceptor - Bringing It All Together With Raleigh's Largest Gravity Sewer Chris Windley, CJS Conveyance Approved for 1.0 credit hour for Wastewater and PE Webinar Description: The City of Raleigh embarked on constructing their largest single sanitary sewer main project to date in 2021 and 2022. The Neuse River East Parallel Interceptor (NREPI) project consists of approximately 29,000 linear feet of large diameter gravity sewer interceptor, mostly comprised of 84-inch and 96-inch fiberglass reinforced pipe (FRP), installed along the Neuse River from the City's Neuse River Resource Recovery Facility (NRRRF) to US 64/264. This project enhances current conveyance and provides hydraulic capacity for future flows, while also serving as the backbone and connector for multiple critical projects. Furthermore, it eliminates two existing wastewater pump stations including the Neuse River Pump Station, eliminates an existing siphon under the Neuse River, and provides operational flexibility for flow management between the Neuse River, Crabtree Creek, and Walnut Creek Sewer Basins. A key component of the flow management is the design and construction of two weir diversion boxes and a vortex drop structure to divert flow from the existing twin 66-inch Crabtree interceptors into the NREPI with a 36-foot elevation drop. The project also includes multiple stub-out sewers for future connections in the mostly undeveloped basin east of the river, avoiding direct connections with the large diameter interceptor in the future. In addition to the challenges associated with installing large diameter sewer with bury depths up to 40 feet, the project includes two trenchless road crossings with 120-inch diameter steel casing installed by pipe jacking and hand/small mechanical excavation and two open cut crossings of the Neuse River using portable coffer dam systems. The project design incorporates modern materials and construction approaches to provide a sustainable collection system. One such example is making use of polymer concrete manholes and composite ring and covers, combined with the FRP sewer main, to provide a corrosion proof interceptor system. Beyond the technical aspects of the project, significant coordination with local, state, and federal jurisdictions and other stakeholders was required for the project planning, design, permitting, and easement acquisition. The project spans three local jurisdictions including Wake County, the Town of Knightdale, and the City of Raleigh and the majority of the project is within the FEMA 100-year floodplain. Easement acquisition included over forty easements for the sewer and access routes, with subaqueous easements from the NC State Property Office for the two river crossings. The presentation will cover the project need, significance, unique challenges, and the results of the completed construction.
Pricing: - Cost is $30 per attendee.
Webinar Information and Requirements: Webinar Technical Requirements - NC One Water will provide each attendee with the link to access the webinar and call-in audio instructions. NC One Water is not responsible for technical support before, during or after the webinar.
- Attendees must ensure that they have the needed equipment, that it is functioning, that it is compatible with the webinar system and that they know how to use it.
- Refunds will be handled according to NC One Water’s current seminar refund policy and will not be issued for attendees that experience technical or equipment failures during the webinar.
- NC One Water webinars are conducted using Zoom. It is highly recommended that you test your computers compatibility before planning to attend a webinar. How-to videos and additional Zoom resources can be found here: https://learn-zoom.us/show-me.
- To participate in the webinar, you must have access to a computer with an internet connection AND an audio connection (phone line or VOIP connection). It is recommended that you participate from a semi-private, quite location where there will be few distractions.
Webinar Continuing Education Units Requirements - Attendees must be on camera at all times during the presentation. Visibility and participation will be monitored. Failure to participate and be visible will result in no CEUs being given.
- Attendees must pre-register and provide a valid certification numbers issued by the NCWPCSOCC, NCWTFOB or NC Professional Engineers.
- Attendees must be logged in at the beginning and must remain logged in through the end of the session. Attendees must promptly respond to brief quizzes that appear randomly throughout the webinar.
- Each attendee must be logged into a separate computer so that their participation may be accurately tracked.
- No partial credit will be given.
- After the webinar, NC One Water staff will email CEU documentation/certificates to attendees meeting the CEU requirements. Reports will also be sent to the appropriate certification boards.
- NC One Water will report all cases of fraudulent attendance to the appropriate licensing boards.
- Inability to complete CEU requirements due to technical difficulties will result in no CEU’s being issued.
Contact Hours: - Wastewater Operators: This seminar is approved by the WPCSOCC for 1 contact hour for continuing education. WPCSOCC Course ID: CE06072303.
- Professional Engineers: This course is approved for 1 PDH.
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