Can respondents use the list of “out of scope” surface impoundments included in the draft survey questionnaire to determine about which surface impoundments EPA desires information?
If you mean the February 9, 1998 draft screening survey, no. That list of “out of scope” impoundments derived from a study that EPA and the states performed in the late 1970s. It includes several types of devices which would not meet the screening survey definition of surface impoundment at all, because they do not manage wastewater (e.g., swimming pools and rice paddies), plus other units that would meet the screening survey definition of a surface impoundment (e.g., an artificial excavation lined with concrete, but which cannot support itself structurally without the surrounding soil). We decided that using this list of “out of scope” impoundments in the screening survey would be too confusing, both because of the awkward question structure that would have been required, and the language excluding concrete-lined units, which sometimes meet the definition of surface impoundment in the final version of the screening survey that we used. Q: Columns 2 and 3 on Table B-2 appear to include
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