Many factors affect the cost of cleanup. For example, if groundwater under the site is contaminated in addition to soil, the cost of cleanup is likely to be much higher. If the contaminated materials need to be transported off-site for treatment, that will also raise the cost. The cost will also depend on standards that apply to the future use of the property. If a brownfield property is remediated to commercial use standards rather than residential use standards, the cleanup will typically be less expensive. The cost to the property owner of the cleanup will also be affected by whether there are other parties, such as previous owners, who may be potentially responsible for the contamination and, thus, must share in cleanup costs.