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Task ll, Evaluation of the Performance of Existing CIPs in each Lake's Subwatershed. Various CIP projects have been recommended, and only some of them have actually been constructed. The performance of those projects actually constructed needs to be evaluated,. and.it is_ also time for models to reflect existing conditions based on new, construction. _. , Task I2; Evaluation of the Performance of Future CIPs in Each Lake's Subwatershed. Task 13, Preparation of Draft Report. Rob Langer reviewed the data collection activities associated with Task l: ® Several hundred wetlands were considered, and the number was narrowed down to 120 for this study. District staff are currently surveying the perimeter of each wetland to help determine storage volume for that wetland, conducting a survey of pond pipes and their condition, and surveying pond depth. All this information is downloaded into the District's GIS system. The use of GPS equipment in the field has saved staff a tremendous amount of time and has resulted in more accurate data. o Samplers will monitor inflow from the following six drainage areas that_contribute significant volume to the chain: Arcade Street Diversion Structure, Kohlman Basin, North Keller / Hwy 36, North Phalen / Larpenteur, South Gervais, and Gervais Creek. ® Lake level monitoring will calculate the amount of water inflow and measure how each lake responds to different rain events. ® The District's work plan will be presented to Ramsey County, and they will be asked to support our study with an accelerated lake monitoring program in order to collect more information than they have in past years. This year, samples will also be checked for total and dissolved carbons. Ramsey County's contribution would be a donation of time, and the District's budget will cover the costs of the additional support we are asking for. Erin stated that the pond survey data will be the most important aspect to the updatin of the P8 watershed model, which will identify overall TSS and TP loads that.. each wetland; or pond_is contributing to the lake. The draft report in Task 13 will summarize methodology, and present results, conclusions, and recommendations for both the lake and its watershed. Cliff pointed out that the last diagnostic study was done in the 1970s using the quality of models and data that were available at that time. A lot of assumptions were made because calibration was not being done at the time.. The goals set forth in the Watershed Management Plan call for more improvement in the lakes than currently exists, so we need to know whether or not those goals are reasonable.. Brad pointed out that any cost estimates provided in the memo relate only to Barr Engineering's portion of the tasks, which is not a reflection of total project costs. Cliff added that the total project costs to the District were spread over a 3-year period, budgeting about $100,000.for 2002, $100,000 for 2003, and $50,000 for 2004. Cliff noted that this project will require more public involvement effort due to the large number of residents on and around this chain of lakes. The District will seek feedback from residents to determine goals for the lake. In addition, two of the four lakes in this chain are on the TMDL list, so this study will help the District respond to that future issue. Roger suggested that Board members review the memo within the next three weeks and direct questions to Brad. Page 3 January 2, 2002 RWMWD Minutes