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1990, 04-16 County Engineer ReviewO E OF THE COUNTY ENGINEER SPOKANE COUNTY, WASHINGTON Project: ��t_#2_ Date 4/16/90 � Address: E. 12614-SIrac�L�_AY�� Parcel No: 22542-0302____ Ref No. B90039 0 The County Engineering Department has completed a review of the above referenced project. The following information must be provided in order for us to proceed with our review. A) A drainage plan for the site which has been prepared in compliance with Spokane County "Guidelines for Stormwater Management". At a minimum the plan must contain: 1. Drainage calculations for stormwater volumes generated on site 2. Calculations for total impervious surfaces contained within the site. 3. Finished grade elevations for structures to be constructed on site. 4. Finished grade elevations at the top and bottom of the 208 swale. 5. A typical cross section of the 208 swale. 6. Calculations to justify the number and type of drywells proposed. 7. Elevation of drywell inlets where applicable. B) Insufficient information was submitted with the proposal. We are unable to proceed with our review. We will need the following before we can proceed: 1. Revised Site/Drainage Plan as specified. This docuaent_- t so Your contact person at the County Engineering Department may be contacted by calling 456-3600. Your contact person is Gary Nelson.