DCS Solutions: Don Jackson Chen Kiat Yong Sarah Doyle Constructed Wetland Design at Sipaulovi Village

DCS Solutions Who are we? Don Jackson – Team Leader Don Jackson – Team Leader –Main client contact –Design & research Chen Kiat Yong Chen Kiat Yong –Main design research –Permitting & regulations Sarah Doyle Sarah Doyle –Main drafter –Design & research –Deliverable editing

Objective To design a centralized wastewater treatment system to meet current and future demand for the Village of Sipaulovi. To design a centralized wastewater treatment system to meet current and future demand for the Village of Sipaulovi.

External Consultants George Mase George Mase –Main Tribal Contact –Community Services Administrator John Mead John Mead –Wastewater Technical Specialist –Institute for Tribal Environmental Professionals Suzanne Jamison Suzanne Jamison –Liaison for DCS and Hopi Tribe Paul Gremillion, P.E. Paul Gremillion, P.E. –N.A.U Professor, Civil & Environmental Department Christine Laguna, P.E. Christine Laguna, P.E. –Grading & Drainage Specialist –CAD advisor Jason Nieto Jason Nieto –Certified Plant Operator –Sipaulovi Lagoons Erika Schoen, E.I.T. Erika Schoen, E.I.T. –Environmental Engineer –Indian Health Service Carl Seweyestewa Carl Seweyestewa –Land Information Systems Surveyor, Hopi Tribal Government Mike Stover, P.E. Mike Stover, P.E. –Technical Advisor –I.H.S. Environmental Engineering Consultant

Introduction Problems with current system Problems with current system –Future growth – population may double Projected calculations in Microsoft Excel Projected calculations in Microsoft Excel –Odors from existing facility –No central sewer system

Sipaulovi Village Proposed site

Aerial photo

What does the client want? Centralized WWTS for current and future users Centralized WWTS for current and future users Prefers Constructed Wetland Design Prefers Constructed Wetland Design Wants to reuse effluent for non-edible crops (gourds, livestock fodder, etc…) Wants to reuse effluent for non-edible crops (gourds, livestock fodder, etc…) Trees Trees Would like to attract birds and other wildlife Would like to attract birds and other wildlife

Design phases: 30% design proposal (completed) 30% design proposal (completed) –Includes research of design alternatives 60% design proposal (pending) 60% design proposal (pending) –Will be completed by April 6 –After 60% design proposal is completed, client representative (George Mase) will be consulted to select final design 90% design proposal (to be completed) 90% design proposal (to be completed) –Includes engineer’s construction cost estimates 100% design proposal 100% design proposal –To be completed by April 20 th –Capstone presentation April 27 th

Design Elements: Transport (not in scope of project) Transport (not in scope of project) –Flow equalization/settling tank –Bar screen –Flow meter (requires electricity) –Pump (requires electricity) –Pressure sewer & Gravity sewer Primary Treatment System Primary Treatment System –Oswald system OR lagoon –Lined or unlined Secondary Treatment System Secondary Treatment System –Constructed wetland (Oswald only) –Non-discharging OR effluent reuse

Questions? Comments? Suggestions?