Laserfiche WebLink
r: <br /> <br />_2_ <br />Rule 4.05.6(6) goes on to say that these two design events apply only <br />if the sedimentation pond (or the temporary SAE impoundment) is <br />located where its failure would not be expected to cause lose of life <br />or serious property damage. If the impoundment were located where its <br />failure would be expected to cause loss of life or serious property <br />damage, then the design events are to be either the probable maximum <br />precipitation of a 24-hour event (or greater if specified by the <br />Division) for impoundments that meet anv of the three criteria above, <br />or the 100-year, 24-hour event (or greater if specified by the <br />Division) for impoundments that do not meet any of those criteria. <br />In the case of the Southfield SAE NOV, Energy F~ele had constructed <br />five non-discharging SAE impoundments. All three had embanlanents less <br />than 20 feet in height, and were located where their failure would not <br />be expected to cause loss of life or serious property damage. As <br />such, the design criteria for the five Southfield SAES should have <br />been the 25-year 24-hour event, as specified in Rule 4.05.6(5)(b), and <br />referred to in 4.05.6(6). <br />/ern <br />M:\osa\ern\energy.dih <br />