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Library Card

Land, Brenda . 2009. Vault Toilet Interception Analysis. 0823 1307P. San Dimas, CA: U.S. Department of Agriculture, Forest Service, San Dimas Technology and Development Center. 8 p.

Most national forests have concrete vault toilets in their developed recreation sites. These toilets have a lined concrete vault, which can store 500 to 1,500 gallons of waste. When the vault is full, it is pumped out by a septic tank service truck. Sometimes the concrete vaults fill with rainwater or snowmelt runoff. This results in unneccesary annual pumping expenses.

Staff from the National Technology and Development Center, of the Forest Service, U.S. Department of Agriculture, was asked to look at ways to prevent the CXT single-vault toilet from flooding. There are several reasons that toilet vaults flood. Some are specific to the CXT toilet and some can affect any concrete vault toilet. This publication discusses vault-toilet flooding.

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