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� <br />DESCRIPTION OF PROJECT: <br />Started in 1988, this project was separated into three <br />phases, with the first phase having been completed. Thia <br />phase was developed in accordance with the requirements of <br />that time. Currently, phase two is being designed. Through <br />the SEPA process, the Department of Fisheries is requiring <br />an HPA. The HPA requir�s additional detention standarda, <br />which are included herein. <br />The following celculations are divided into three sections, <br />with the first being the detention calculations per the <br />Department of Fisheries standards for phases II and 1II, the <br />� aecond being the calculations done under the City's <br />' standards for phase II and the third were the calculations <br />done in 1988 for the entire site. The first section adds <br />the Department of Fisheries Standards to the detention <br />volume orieinally calculated for phase I. This total is the <br />new total for the entire site. This volume was reduced by <br />the detention volume that was installed during t;�e first <br />• phase of the project. (More detention volume was inscalled <br />during the first phase than was required for that phase.) <br />The result is the ndditional detention volume that muat n:+w <br />be installed <br />The Department of Fisheries elsa requires biofiltration. No <br />new calculations were done for this, as biofiltration has <br />already been proposed for the site under the prior <br />calculations. Since the guidelines are similar to the <br />Department of Fiaheries, no revisions should be necessary.. <br />