STANTON, Neb. (AP) — An advocacy group fighting against a Canadian-based company’s decision to replace sections of the Keystone XL pipeline in Nebraska has given residents jars to gather soil and water samples from their land.

Bold Nebraska handed out the jars at a meeting in Stanton Tuesday night. The contents residents bring back in the jars will be tested by an independent lab in Omaha.

U.S. Pipeline and Hazardous Materials Safety Administration spokeswoman Angela Pickett says TransCanada is replacing sections of the pipeline that don’t meet current government strength standards just six years after it began operating in June 2010.

TransCanada spokesman Mark Cooper says the Keystone pipeline continues to operate safely, but Bold Nebraska founder Jane Kleeb says Nebraska landowners have no way to verify that.