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i m 922 Mainstreet u� Hopkins, Mn. .....:.....:.. .. 55343 (6 1 2)933-0972 . -I oc1ATES LTD. lax: (61 2)933-115 November 9, 1993 Steven Gatlin Director of Public Works Dennis Welsch Community Development Director City of Roseville 660 civic enter -Drip a Roseville, NN. 55113 Dear 14r,. Ga tl i n and Welsch: This is to confirm our discussion yesterday regarding the temporary { and regional stormwater ponds for the Twin Lakes Corporate �Center in the City of Rose ille. it is Our understanding that by 1995 the Cit y of Roseville is committed to constructing a regional pond of sufficient size and design to accommodate surface water runoff from the Twin Lakes Corporate center site, and that this regional pond `. may :generally be located south and southeast of Langdon Lake. Ryan Construction Co* -asFumes that the planned temporary stormwater pond _can he eliminated and surface grater runoff directed to the proposed regional pond by .#995 It an Construction is preparing a watershed p i t, to the Rice Creek_ Watershed D i s tr is t for the purpose of enlakg ing the temporary pond. This temporary pond is needed because. the - regional. pond to accommodate 'the Twin Fakes .-Corporate Center area has not been constructed to date. The information regarding ,timing and phasing for 'cons tract i n the regional p6nd Sri ll be included as. part o f the g _ Rice Creep Watershed District permit, We appreciate the opportunity to work with the City of Roseville on =r pp this issue. Fee 1 free to contact either o f us if we may he of any assistance i Sincerely, RLX ASSOCIATES dddm Steven chwanke Donald Shaffer cc.- bent Carlson, Ryan Construction Co. Mike Cairl, Ryan Construction Co. or _11P chael A. Sauer, Ryan Construction Co* Toga bast, Ryan Construction Co. . Civil Engineering . Transportation • 16frastructure Redevelopment Landscape Architecture # Construction Management r