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Barr Engineering Company <br />4700 West 77th Street Minneapolis, MN 55435-4803 <br />Phone: 952-832-2600 Fax: 952-832-2601 vvww.barr.com An EEO Employer <br />~ ~ ~ <br />January 30, 2008 <br />Minneapolis, MN Hibbing,. MN Duluth, MN • Ann Arbor, MI Jefferson City, MO <br />Mr. Mark Maloney <br />Grass Lake Watershed Management Organization <br />4600 Victoria Street North <br />Shoreview MN 55126 <br />Re: Progress on Lake Owasso UAA 23/62-946 <br />3arr Invoice Perlod: Decesn~er 1, 20Q7 through D.~cer;tibr 28,.2007 <br />Dear Mr. Maloney: <br />The enclosed invoice is for professional services, which include the following: <br />• Continued P8 watershed model total suspended solids, total phosphorus, and runoff calibration. <br />• In-lake water quality model data input development and begin model calibration. <br />• Continue work on report text and figures. <br />Over the, past month we have continued surface water and in-lake model calibration efforts to the <br />observed flaw and water quality data collected by RWMWD and Ramsey County. In addition to <br />model calibration. we have been working on the draft UAA report. The budget remaining as of <br />December 28, 2007 should be sufficient to finish the remaining work tasks.. Overall the project has <br />fallen slightly behind schedule due to the unforeseen calibration difficulties. The table below <br />provides a summary of the project budgets based on the major work tasks identified. in the agreed <br />upon scope of services. <br />Total Billed ~ <br />. ~ Contrac., 'i Current (including 'this <br />Task ~` 'Task Descripficrt ; Budget ~-" I invoice invoice) i t~~~l once <br />001 <br />002 <br />003 <br />004 <br />005 <br />006 <br />007 <br />008 <br />009 <br />010 <br />Current & Historic WQ $2,020.00 $150.00 $1,471.00 $549.00 <br />Set Beneficial Use Goals $1,150.00 $0.00 $0.00 $1,150.00 <br />Assess Goal Attainment $350.00 $0.00 $0.00 $350.00 <br />Estimate Lake Water & TP $16,860.00 $0.00 $17,801.17 -$941.17 <br />Budgets <br />In-Lake Modeling Ex LU $18,110.00 $4,205.00 $12,953.42 $5,156.58 <br />In-Lake Modeling Future LU $3,050.00 $0.00 $93.50 $2,956.50 <br />BMP Assessment $5,040..00 $0.00 $0.00 $5,040.00 <br />UAA Report $16,870.00 $3,338.00 $7,618.00 $9,252.00 <br />Project Management $5,160.00 $0.00 $6,273.85 -$1,113.85 <br />Lake Use Survey $9,520.00 $0.00 $13,001.38 -$3,481.38 <br />TOTAL $78,130.00 $7,693.00 $59,2.12.32 $18,917.68 <br />