LA CROSSE, Wis. (WKBT) -

La Crosse city officials are recommending spending more money to study the effects of lead contamination in the marsh.

The Board of Public Works approved Monday spending $30,000 from the city's reserve account to look further into the effects of old bullet casings left behind by the La Crosse Gun Club decades ago.

The city council previously approved $25,000 to hire a consultant to look into the possible lead contamination, but the Wisconsin DNR says more work needs to be done.

The additional funding still needs approval from the city council.