Conference Agenda

A stormwater maintenance frequency assessment of a high-rate filter was conducted in a street located in King County Washington from September 2020 to January 2022 (Herrera, 2022). The system had a routine maintenance event followed by hydraulic and sample collection to determine maintenance frequency. The presentation will discuss the study site, sample methods, results and conclusions from the investigation. I will also have an open discussion on visual inspection cues for determining maintenance with horizontal treatment systems associated with road sanding events.

Wireless level and flow monitoring solutions for managing stormwater and combined sewer systems, and near real-time alerting of utilities and consultants of high levels and/or pending CSOs. Data delivered wirelessly to ADS' PRISM web-based software can used for monitoring level only or quantifying flow for purposes of event notification, overflow reporting and overall stormwater management purposes including model development and/or calibration.

Formed in Helena, MT in 1993 the company began installing Cured-in-Place Manhole (CIPM) lining systems in 1997. We have extensive experience with unique and diverse situations, including but not limited to manholes, square structures, deep wetwells and lift stations, culverts, remote installations, and heavy infiltration and deterioration problems. Cured-in-place liners can often be the most practical solution both cost-wise and length of installation time and is almost always the most permanent method. They stop infiltration and provide structural integrity. The multiple layers of fiberglass provide needed structural integrity and the PVC membrane acts as a barrier to H2S gas. It can usually be installed without bypass pumping and in a matter of a few hours. The entire interior of the structure receives coverage. CIP’s intelligently-designed process fortifies existing infrastructure and is certified to last up to 100 years, unrivaled by any product in the marketplace.