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mP�GHA V��2 <br />i = <br />0 <br />`yN� tno�N�. <br />Gordon Witcher <br />Ciry of Everett Public <br />3200 Cedar Street <br />Everett, WA 98201 <br />Works Departrnent <br />CIVIL ENGINEERING. LAND PLANIJING. SURVEYING, ENVIRONMENTAI SLRVICES <br />OCtobet 18, 1993 <br />COURIER DELIVERY <br />o����r�a�� � D� <br />r� <br />I� U OCT 1� 1;n� <br />., _...,.r ............. <br />................. . � TT <br />......Gll ( C;� E <br />� _�.� <br />�„ <br />BIdF;. P�;i,,;; <br />RE: Submittal of Civil Engineering Design Plans for Everett Mall Office Park/Future Shop Building <br />Our Job No. 4767 <br />Dear Gordon: <br />I am forwarding thc `ollowing plans and documentation for your review and approval of the proposed <br />future shop building at th. Evere'". Mall Office Park. <br />1. Threa blueline sels �if the Civil Engineering Design P1ans, inctuding grading and storm <br />drainage, se�ver and water service, and details and construcfion notes. <br />2. Two copies c.` se Storm Drainage Report and calculadons for ihe project. <br />The water qualiry requirements for this project will be accomplished through a combinadon of <br />t-iofiltradon swales and an oil/water/grit separator. Exisfing soils do not allow for adequate infi�tration of <br />;torm water and because this pareel is the last phase of the development in the Everett Mall Office Pazk, <br />u�ere is inadequate room for wet ponds. 7'he City of Everett storm drainage requirements have been <br />up�iated several times since the ini6al phases of the Everett Ma�1 Office Park. 1'he storm syetem for the <br />theawr addition was originally intended to ba expanded as necessary to serve this remaining uarcel. As <br />I discussed w�th You last week, there is approzimately 30,000 square feet of addidonal impervious area <br />which will be created by the development of Buildings 5 and 6. We are in the process of verifying the <br />capacity of the exis6ng regional storm system to determine if it has adequate capacity for this a�istisional <br />area. Because of the depth of the exisfing storm system for the theater addipon, it would be very difficult <br />to design a detendon system to serve this parcel. I will forward copies of our capacity analysis for your <br />review as soon as it is completed. <br />18215 72ND AVENUE SOUiH KENT, WA 98032 (206) 251-6222 (ZO6) 251-8782 FA% <br />