MMSD Private Infiltration and Inflow (I&I) Evaluation, Milwaukee, WI
|OTIE conducted a data collection and field investigation involving televising, electro-scanning, and lateral inspection for the MMSD Private Property Infiltration and Inflow (PPII) to reduce I/I that entered the sanitary sewer system. The results revealed that rain water entered the sanitary system through defective pipes. To repair these pipes and reduce backups, OTIE evaluated the data to determine the best course of action to minimize I/I.
To investigate pipe conditions, OTIE used Electro Scan technique which involved passing an electrical probe through a pipe filled with water. The probe emits electrical current which passes through the pipe wall into surrounding soil, ultimately to complete an electrical circuit with a ground rod. OTIE’s investigation services included the following activities:
In addition to Electro Scan, OTIE supervised and conducted hydraulic loading (“soaker hose”) and storm sewer dye testing accompanied with sewer televising.
|Client Name: MMSD
Location: Milwaukee, WI
Contract Value: $102K