Problem The city of Grosse Pointe Farms, Michigan, experienced groundwater and soil infiltration in a sewer drainage line after a rehabilitation project was not properly sealed. The poorly sealed line also caused erosion of the surrounding soils which led to large voids and settlement in the asphalt pavement system of a road running above the sewer line. Analysis The city hired URETEK to evaluate the situation and offer a solution that would properly rehabilitate the sewer line once and for all. After close examination, URETEK determined that the source of the leak was a broken sewer saddle. Be- cause the scope of damage extended into the surrounding soils and to the pavement above, URETEK elected to employ its URETEK Deep Injection ® (UDI) method to seal the leaky joint and stab

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