Effectiveness of Sump Manholes for Pretreatment Particulate Removal

This study provided a better understanding of the effectiveness of existing sump manholes and catch basins by documenting sediment volume data from actual structures in urban watersheds. Often influent concentrations in urban environments are assumed to have a particle size distribution (PSD) similar to NURP 50 (EPA 1983), and this study addressed if this is a valid assumption for urban watersheds. This study also illustrated how SHSAM can be used to estimate effective maintenance schedules. Characterization of sump sediments provides a better understanding of the pollutant hazard to the environment. Characterization also provides an understanding of the sediment disposal options available.

Executive Summary .pdf

Project Final Report .pdf

Project Report Appendix .pdf

Link to Digital Conservancy

2019 Midproject Presentation .mp4

Project Staff: 

John A. Chapman, Assistant Research Professor and Erosion and Stormwater Management Certification
Program Director. 1390 Eckles Ave, St. Paul MN 55108; 612-626-4857; chapm155@umn.edu
Cathy Abene, Principal Engineer, University of Minnesota Facilities Management;
Omid Mohseni, Senior Water Resources Engineer, Barr Engineering Company;
Rebeca Forman, Teaching Specialist, University of Minnesota

Project Duration: 

January 1, 2019- December 31, 2019

Research spotlight

Minnesota Stormwater Research Spotlight - October 2020 - John Chapman and Sarah Hobbie