Shelton, Jim

Jim Shelton is a Vice President and National Technical Director for Buried Infrastructure for ARCADIS, focusing on condition assessment,...

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About Shelton, Jim

Jim Shelton is a Vice President and National Technical Director for Buried Infrastructure for ARCADIS, focusing on condition assessment, rehabilitation, construction management, capacity assurance, operational assistance, and program development and management. He has a degree in Chemical Engineering from University of Pennsylvania, is a licensed water and sewer contractor in several states, and holds active Professional Engineering licenses in Civil Engineering in 14 states.

Shelton, Jim

Titles from this speaker

Description: Successful I&I Reduction using Design-Build - Developing and Implementing the...

Successful I&I Reduction using Design-Build - Developing and Implementing the River Valley Highlands Design-Build Sewer Rehabilitation Project

Abstract

River Valley Highlands has a developer-constructed sewer system that was dedicated over to City of Lancaster, Ohio less than 10 years ago, with aspects of the development still under construction. Numerous unexplained basement backups during heavy rains were causing basement backups 1-3 times per year. Following a focused root cause investigation, a turnkey sewer rehabilitation project using Progressive Design-Build to provide continuous highly collaborative interaction between the Owner, Engineer, Construction Manager, and Subcontractors was used to solve this problem. This paper will present the project from initiation through assessment of post-rehabilitation effectiveness. The project removed 61% of the RDII volume This paper will present how City of Lancaster developed the turnkey engineering and construction program to aggressively reduce I&I flows into their sewer system, relate the details of implementation, share the impact on flow reduction and benefit to extending sewer service life, and discuss engineering and construction management lessons learned. Significance This project was delivered as one of the few turnkey engineering and construction programs implemented for sewers systems with guaranteed maximum price, guaranteed schedule, and overflow elimination expectations. Results Construction was completed in November 2018. Control Basin Method pre- and post- rehabilitation flow monitoring in the basins rehabilitated yielded a 61% reduction in RDII volume. Given that most of the lateral length was unaddressed and that no inflow sources were removed by this project, this is consistent with expectations for this project. Warranty testing conducted 2 years after completion of rehabilitation showed that 99.8% of the joints were still completely airtight, that 97.6% of the lateral tap connections were still air-tight, and 100% of the pipes were structurally secure.

This paper was presented at the WEF Collection Systems Conference in Detroit, Michigan, April 19-22.

SpeakerShelton, Jim

Presentation time

9:00:00

9:30:00

Session time

8:30:00

10:00:00

Session number7

Session locationHuntington Place, Detroit, Michigan

TopicAlternative Delivery Systems (Design-Build-Operate-Transfer), Infiltration/Inflow, SSO Reduction

Author(s)

J. Shelton

Author(s)J. Shelton1

Author affiliation(s)Arcadis1

SourceProceedings of the Water Environment Federation

Document typeConference Paper

PublisherWater Environment Federation

Print publication date Apr, 2022

DOI10.2175/193864718825158327

Volume / Issue

Content sourceCollection Systems

Word count18

The Perils of Interceptor Surcharging: Unintended consequences of in-line storage

Abstract

ABSTRACT Utilities are more and more frequently resorting to real-time control systems that intentionally block flows in interceptors to take advantage of available in-line storage during storm surges to combat overflows from sewers. Many utilities are also more and more frequently extending their pump station's wet wells into the sewers feeding the wet well to raise NSPSH and to effectively enlarge their wet wells, improving pump performance. Both practices have significant operational end environmental value. Overlooked in these efforts are the impact of often quite significant internal pressures on pipes with joints not capable of containing these pressures. Surcharged sewers with leaking joints, when pressurized even a few feet, pass massive volumes of water outside the sewer into the surrounding pipe bedding and pipe trench backfill. When hydraulic grade lines subside to normal (open channel) operating levels, the sewage pushed outside the pipes pours back into the pipe, bringing bedding fines that eventually result in pipe bedding envelope failure and pipe collapse. This paper identifies the causes, mechanisms of failure, evidence of likely failure if surcharges, inspection techniques to identify pipes at risk if surcharged, and rehabilitation methods once a pipe is thus compromised. This paper is relevant to any utility considering or using in-line storage. Relevance, Usefulness, and Takeaways Surcharging interceptors can result in catastrophic and hugely expensive repairs if the pipes are not prepared to contain the pressures. Determining if a pipe can handle the pressures sometimes requires more than CCTV inspection. This paper provides suggested assessment measures utilities can use protect themselves from these failures as well as identify the rather involved corrective measures needed if the wrong pipes are surcharged. Demonstrated Results The project used to demonstrate these condition assessment techniques and remedial measures is largely complete. This presentation will contain meaningful photograph and video clips to convey the lessons learned.

This paper was presented at the WEF Collection Systems Conference, June 27-30, 2023.

SpeakerShelton, Jim

Presentation time

08:30:00

09:00:00

Session time

08:30:00

10:00:00

SessionSession 07: Interceptors & Tunnels

Session number07

Session locationKansas City Convention Center

TopicTrenchless Technology, Wet Weather Management & Control (CSOs/SSOs)

Author(s)

Shelton, Jim

Author(s)J. Shelton1; A. Peters2;

Author affiliation(s)Arcadis1; Evansville Water and Sewer Utility2;

SourceProceedings of the Water Environment Federation

Document typeConference Paper

PublisherWater Environment Federation

Print publication date Jun 2023

DOI10.2175/193864718825158875

Volume / Issue

Content sourceCollections

Word count11

Base text size -

Shelton, Jim

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