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r ~~ - ~` " Barr Engineering Company R E C E I V E D AUG 2 2 2007 4700 West 77th Street Minneapolis, MN 55435-4803 Phone: 952-832-2600 Fax: 952-832-2601 www.barr.com An EEO Employer "'~" Minneapolis, MN Hibbing, MN Duluth, MN Ann Arbor, MI Jefferson City, MO August 17, 2007 Mr. Mark Maloney Grass Lake Watershed Management Organization 4600 Victoria Street North Shoreview MN 55126 Re: Progress on Lake Owasso UAA 23/62-946 Earr Invoice Periacf: July 14, 2007 through August 10, 2007 Dear Mr. Maloney: The enclosed invoice is for professional services, which include the following: • Sediment core analysis and data summary. • Review of water quality data and. compare to RWMWD plots. • Watershed divide work. • Review preview study reports and project files. In addition to the work performed by Barr, the cities of Shoreview and Roseville have field collected the locations of all the inflow pipes discharging to Lake Owasso. Ramsey County (Terry Noonan) completed a lake macrophyte survey between May 22-30, 2007, prior to the June 4, 2007 chemical treatment to control marcophytes. The County also continues to collect water quality in Lake Owasso and RMWD has installed equipment at three locations to monitor stormwater inflows to Lake Owasso. The table below provides a summary of the project budgets based on the major work tasks identified in the agreed upon scope of services. Overall the project is on schedule and moving forward as j'~~ :- ~ :-ie~:~c•~~er, the development of the Lake %i er Sur Bey ('iask Oi0) uid require more effort than originally anticipated because of the unplanned meeting with stakeholders to collect input on the lake user survey, manager's request to development of an on-line survey in addition to the mailing, and additional postage related to the number of mailings. As a result, this task required unanticipated project management and the budget for work task 010 was over spent. At the present time it appears that these overruns can be compensated for by other project efficiencies on the lake sediment core collection and analysis.