I am an ecologist with a consulting company which has been tasked with creating a vernal pool for a local municipality, not as a regulatory mitigation requirement, but as a general habitat improvement and educational opportunity. The design we specified has a "fish grade" plastic liner sandwiched between fabric padding, however this was met with some public out cry that the liner is unnatural and will cause some detriment to the environment. From what I've read, the alternative of capping the pool with compacted clay is labor intensive, expensive, and not as durable, as the clay may crack following repeated wet/dry and frost/thaw cycles. Does anyone in this forum have any experience with created vernal pools using alternative methods to either clay or plastic liners? Are there any good success stories, ideally in the New England Region, where either clay or plastic liners have worked? Any information is greatly appreciated. Thank you.
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