Based on the information provided about the author's credentials, how reliable is this source? According to Dr$.$ Gary Hartha, Professor of Environmental Studies at Lancaster University, "Although the proposed park would be built in a natural watershed, the water management system suggested by the park's designers should counteract any negative impact."

This source's expertise is highly reliable, even for scholarly audiences.

This source's expertise is reliable, but it wouldn't satisfy a scholarly audience.

This source's expertise is highly questionable, and it should not be included.

This source's expertise is questionable, and more research is needed to determine if it is an appropriate source.