A solution on how to effectively dispose of storm water in southwest Manteca is being delayed.

It’s due to a need to adjust the construction drawings and accompanying specifications that Drake Haglan Associates completed recently.

The change is needed to adjust the project to an increase in water elevation requirement based on what staff indicated was a “very recent” report issued by the San Joaquin Area Flood Control Agency.

SJAFCA is the agency responsible for putting in place 200-year flood protection for southwest Manteca, Lathrop east of the San Joaquin River, French Camp, and southwest Stockton.

The Manteca City Council when they meet Tuesday at 6 p.m. are being asked to increase the consulting firm’s contract by $206,450 to $1,592,318 in order to perform the necessary adjustments.

The extended contract will go through June 2027.

The additional work is being covered by fees collected on growth in the area to address storm drainage needs.

The project includes a 66-inch gravity storm drain line below Woodward Avenue that will be extended to property owned by Reclamation District 17 on Aplicella Court in the Oakwood Shores neighborhood.

From that point, a pump station and 48-inch forced main will carry the storm runoff to the former Oakwood Lake Water district corporation yard and over the levee to an outfall structure on the San Joaquin River.

The rest of Manteca drains into the South San Joaquin Irrigation District French Camp Outlet that runs north along the Lathrop city limits/Union Pacific Railroad Altamont line and dumps into the river near French Camp.

To contact Dennis Wyatt, email dwyatt@mantecabulletin.com