1. WATER SUPPLY – FINAL PRESENTATION Amelia Quilon, Laura Reisenauer, Rayvion Sanford, Sarah Watzman

2. Participants SARAH WATZMAN - aka the girl who never frowns ! -Third year ME -Bio-digester lead LAURA REISENAUER- aka the girl who rarely drinks water! -Third year Env.E -Team lead AMELIA QUILON - aka the girl who only eats peanut butter  ! -Third year ISE -Tilapia lead RAYVION SANFORD- aka the girl who severely hates bugs! -Third year Chem.E -Communication lead

3. Problem Main Problem Scope: MdL frequently loses electricity that powers their lift pump and distribution pump. Objective: Explore alternative energy sources to either back-up pumps during power outages or replace grid. Increase water storage capacity to mitigate problems occurring when there’s no electricity. Side Problems Scope: MdL has a non-functioning biodigester. MdL has a not fully functional tilapia pond. Objective: Find the root cause of the biodigester’s problem. Provide MdL a plan so that the biodigester becomes a stable, functional piece. Repair the tilapia pond. Develop a yearly schedule for tilapia harvesting to maximize yield.

4. Pre-Pre Trip Work Generator Requirements: 20 kW generator needed to overcome initial in-rush. $20,000 for 20 kW generator $600 for variable frequency driver (another pricey option!) Additional Storage Capacity Cost: $5,000 Feasibility: 900 pound tank Support issues – 13,000 pound tank when full Diameter and dimensions (Saul confirmed this information) Is this even a problem? MdL had only used a water truck 2 – 3 times over several years!

5. Pre-Trip Work Biodigester Discoveries from last trip – clogged, too many solids, too basic water Sump pump is on site What does the biodigester need before it can be fully operational? Poop and H2O! Sustainability and training Tilapia Pond What has worked already and what is currently working? Section 1 is functional Sections 2 and 3 are leaking How can MdL fully utilize the tilapia pond? Protein source for the children Potential revenue generator?

6. Objectives Achieved Biodigester Benefit analyzed Contents fully removed Composting pile “organized” and dedicated to garden Manure on site Manure Composting posters createdposters Gas line replaced Gas line Staff trained and informed Tilapia Pond Sections 2 and 3 drained and cleaned Sections 2 and 3 patched Could not be tested for leaks due to water issues Pump has been spliced so it can be used in both sections Animal rescue! Business plan Rotation Schedule

7. Future Recommendations Biodigester Once enough manure is obtained, initialize biodigestermanure Put compost from kitchens directly into biodigester For less confusion, only use kitchen’s compost, not kids! Use existing compost pile for garden Gas lights by compost area Tilapia Pond MdL is already thinking of re-surfacing the pond. MdL should stagger each section to increase the times each year they harvest. Use pump in middle section. Use spliced hose in large section.

8. Questions?

9. Appendix

10. Biogas Production Analysis Energy produced from methane created from food scraps is 1/3 of the energy MdL’s propane tanks provide.

11. Biogas Production Data

12. Manure Procured Analysis

13. Installation Volume Analysis

14. Tilapia Revenue Analysis

15. Tilapia Rotational Schedule SectionJanFebMarchAprilMayJune 1Harvest!StockMo. 2Mo. 3Mo. 4Mo. 5 2StockMo. 2Mo. 3Mo. 4Mo. 5Harvest! 3Mo. 4Mo. 5Harvest!StockMo. 2Mo. 3 SectionJulyAugSeptOctNovDec 1Harvest!StockMo. 2Mo. 3Mo. 4Mo. 5 2StockMo. 2Mo. 3Mo. 4Mo. 5Harvest! 3Mo. 4Mo. 5Harvest!StockMo. 2Mo. 3

16. Composting Posters Good (Bueno) Beans (frijoles) plantains/bananas (platano) watermelon (sandia) tortilla (tortilla) lettuce (lechuga) tomato (tomate) pineapple (pina) rice (arroz) Bad (Mal) Eggs (huevos) bones (huesos) meat (carne) egg shells (cascarde de huevo) paper (papel) milk (leche) cardboard (carton) plastic (plastico)

17. Biodigester – Chamber Dimensions

18. Biodigester – Gas Pipe Dimensions