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SUPPORTING NOTES for TABLE A <br /> 1. Assumes annual inflation rate of 3 percent. Actual DIA 164 full cost is/will be based on the USDA NRCS amounts for Illinois published <br /> annually between November and January for a given federal fiscal year. ESE will discount the published NRCS DIA 164 full cost estimate by <br /> 20 percent,per the above table. <br /> 2. NRCS DIA 164 is estimated by USDA NRCS to cost the same to develop regardless of practice type;that is,the same design work and level <br /> of effort is required for manual drainage water management,automated drainage water management,a denitrifying bioreactor,or a <br /> saturated buffer. The only difference is if a tile map for the benefitting field exists to be used in the design process or if one does not exist. <br /> It is more expensive to design a practice if a tile map does not exist(is not available). <br /> 3. The distribution between DIA 164s with and without tile maps available for practice design is unknown until work begins with producers. <br /> For the above cost projection,ESE has estimated that 40 of the DIA 164s will have a tile map available and 30 of the DIA 164s will not have <br /> a tile map available. <br /> 4. The total dollar amounts available to ESE to earn for completed DIA 164s by year will not be exceeded without prior approval by the City of <br /> Decatur. <br /> 5. This overall estimate assumes that the City of Decatur's"Agreement for Professional Services"with ESE will be executed no later than <br /> March 31,2024. If delayed beyond this date,some of the estimated 2024 work may be pushed in 2025,but it is anticipated 28 DIA 164s <br /> will be completed by the end of 2025 even if the start date for ESE's technical services is delayed based on when the agreement is <br /> executed--helping to keep the project on schedule. <br /> 6. The number of DIA 164s to be completed is an estimate and is controlled by producer signup because this RCPP project is a voluntary <br /> conservation program. ESE will work closely with the City of Decatur and other project partners to promote this opportunity for <br /> producers. <br /> 7. The distribution of the conservation drainage practices between manual drainage water management,automated drainage water <br /> management,denitrifying bioreactors,and saturated buffers will be determined by participating producers,their needs,and the site <br /> conditions regarding what is feasible. However,this will not make a difference regarding the cost of DIA 164s developed as the same <br /> design work and level of effort is required regardless of which of these practices is selected by a producer. <br /> ESE's Experience & References <br /> EXPERIENCE: ESE is a limited liability corporation(LLC)that operates based on a mission statement of, "Valuing Conservation for its <br /> Returns to the Land, Natural Resources, Producers,and Communities." It works directly with ag producers to improve their <br /> profitability and environmental performance through the adoption of conservation practices and systems that enable effective use <br /> and management of water resources. It employs highly qualified and experienced technical specialists to determine the feasibility <br /> of and carry out the planning,design,and installation oversight of conservation practices and systems that enable producers to <br /> optimize their water use. Optimized use of available water ensures crops receive the right amount,timing,and distribution of <br /> surface and subsurface water for crop productivity while also protecting and improving the environment. <br /> ESE is currently an active partner in public/private partnerships in Delaware, Florida, Illinois,Indiana, Iowa, Minnesota,Mississippi, <br /> Maryland,Ohio,and Wisconsin to advance conservation drainage in agricultural settings.Throughout these partnerships, ESE has <br /> provided quality and timely technical services to implement public and private funded efforts for increased conservation drainage <br /> adoption while also providing effective project management and timely reports for funders. <br /> ESE's work is performed by a licensed professional engineer and multiple certified Technical Service Providers, registered with NRCS, <br /> who use a site-specific planning approach to respond to the unique needs of each ag operation. These technical specialists assist <br /> with a wide array of water management conservation practices designed/installed to NRCS practice standards. ESE's technical team <br /> has specialists who are certified NRCS Technical Service Providers in Illinois for the DIA 164 conservation activity and covering the <br /> following conservation drainage practices: drainage water management(CPS 554),structure for water control(CPS 587), <br /> saturated buffer(CPS 604),denitrifying bioreactor(CPS 605),subsurface drain(CPS 606),surface drain—field ditch(CPS 607),and <br /> surface drain—main/lateral(CPS 608). <br /> Page 6 of 11 <br />