3003 W CASINO RD 1992 SITE DEV 2018-01-01 MF Import

/ • ;�� L. � j� ! r ' J / �' �-li 7�� ' L� �t. �` � MEMORANDUM �'�^ V `� ,�<<� ' P , �� , � ' r.r i � � ,� '� �`� �,r�^'�� ! TO: Kirk E3rooks �� � � , FROM: Jane Zimmerman ` �� , ., � DATE: August 3, 1992 / ' � SUBJECT: Boeing North Parking Lot Expansion My comments to Planning on the subject plans are: �� Fairly extensive grading, adjacent to the parking areas, is � proposed in the 60 foot wildlife corridor. Is this acceptable? It appears that tt�ere is a natural drainage way runninq along the east side of the parking lot expansion area that ends np discharging to the existing detention pond located to the north. In addition to grading for the parking lot and construction of a storm line to the pond, Boeing is proposinq a culvert to pick up drainage in this area (see sheets C152 and C292) . Before the plans are approved, the ✓ area should be checked to determine that the natural drainage does not meet the definition of a stream and/or that wetland areas do not exist alonq the natural drainage route. if a stream or wetland does exist in this area, the topography indicates that proposed grading for a portion of the parkinq lot expansion would probably occur within the buffer. . . In addition, clearinq for and construction of the storm line to the existinq pond would be within the buffer area if the drainage way to the pond is categorized as a stream or wetland. other comments are: jA revegetation plan is required to be approved by Planni+�g for those areas where disturbance of the wildlife corridor ' will occur. The EIS document states that vegetated swales must be provided to treat stormwater runoff from all. areas except for those draining to the peat filter system. The majority � of the north parking lot expansion area naturally discharges to an existing detention pond located to the north. A vegetated swale designed per City standards must be provided - to treat this runoff before it leaves the site or discharges to a wetland or stream.