More testing is scheduled to begin in May in a Lockport city park and in Eighteen Mile Creek, both part of a federal Superfund site that extends from Lockport to Lake Ontario.
The Lockport Common Council last week gave the Environmental Protection Agency permission to work in Upson Park on Clinton Street.
An EPA spokeswoman said soil sampling will try to establish the extent of contamination in underground areas already known to contain lead and cancer-causing PCBs. Groundwater monitoring wells also will be installed during the work, scheduled to last until next spring.
In the creek between Lockport and Olcott, the EPA will sample water, soil, sediment and fish in May as it continues to plan an eventual cleanup of the 13-mile stream.