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r <br />06/09/92 09:42 FAX 2C877 <br />FAX COVER SHEET <br />Lovell-Sauerland & Associates Lynnwood: (206) 775-1591 <br />19400 33rd Avenue W. Suite 200 Seattle: (206) 340-0830 <br />Lynnwood, Washington 98036 FAX: (2061 672-7998 <br />Engineers / surveyors / Plann+r . <br />Date: June 4, 1992 Time 09:30 LSA Job No. 2769 <br />of Public Works Department, City of Everett <br />SUBJECT: Wa Sang Company Clearing Plan <br />PHONE: 259-8731 FAX: 259-8856 <br />FROM: Craig Campbell <br />COVER SHEEP PLUS _1_PAGES <br />COMMENT: Dear Jane, <br />I received the review comments on the subject clearing plan this <br />morning. I have a question relating to one of the comments (shown <br />on the attached page), that I would like to discuss before we <br />proceed with revisions. The comment indicated that the detention <br />rate for the site should be halfway between the earth/gravel value <br />and the lawn/landscaping value. <br />I have understood the earth/gravel value to relate to conditions <br />such as unpaved parking areas, road shoulders, compacted bare earth, <br />and similar surfaces --relatively smooth and without vegetation. I <br />don't believe this will be the situation on any significant area <br />of this site. <br />The plan requires the contractor to reseed all disturbed areas <br />within 30 days of completion of clearing. The plan will involve <br />clearing trees and major areas of brush. It will not include <br />grading except to create the detention pond. There'will be <br />significant amounts of ground -cover type vegetation remaining on <br />the site after the work is complete, and although damaged, should <br />recover and spread. Also, since no earth moving is involved, the <br />terrain should remain rough and resistant to efficient sheet <br />runoff. <br />If the work occurs this summer, and if the rain starts around here <br />when it usually does, I would expect significant ground cover by <br />winter. Ultimately, at some reasonable time after clearing, and <br />assuming no other construction activity is underway, the land <br />should be covered with tall grass. — b,) t n �k d z^`"? , <br />With this in mind, I believe the lawn/landscaping detention rate <br />is more appropriate. <br />If necessary, we can deal with the higher detention rate fairly <br />easily by raising the berm an additional foot, making the total <br />depth of storage just under 3 feet. This will double the storage, <br />which is about what the higher detention rate requires. However, <br />based on the above discussion, I question the need. Please <br />\ reconsider and let me know your. decision. Thanks. <br />