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Innovations for GREEN Infrastructure Friday, October 2, 2009

Innovations for GREEN Infrastructure Friday, October 2, 2009. Presented by: Daniel Danicic, PE, MPA City Manager City of Newberg Contact Info: dan.danicic@newbergoregon.gov (503)537-1207 PO Box 970 Newberg, OR 97132. Definition of sustainability:

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Innovations for GREEN Infrastructure Friday, October 2, 2009

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  1. Innovations for GREEN InfrastructureFriday, October 2, 2009 Presented by: Daniel Danicic, PE, MPA City Manager City of Newberg Contact Info:dan.danicic@newbergoregon.gov (503)537-1207 PO Box 970 Newberg, OR 97132

  2. Definition of sustainability: “An environmentally sustainable organization seeks to participate within its community and seeks to balance economy, society and environment within its operations. Through seeking balance, an organization may better steward natural and economic resources taking into account the needs of future generations.”

  3. Usually sustainable projects cost more to construct and operate than traditional approaches. They are undertaken for altruistic purposes rather than economic. Newberg has two projects that demonstrate that the right thing to do can also generate revenue: Biosolids Composter and Wastewater Reuse System

  4. Biosolids Composter What are Biosolids? Wastewater influent involves liquid and solid components. The treatment process involves separating these two elements. The solids portion is referred to as “biosolids.” There are a number of methods to manage biosolids each with benefits and challenge

  5. Biosolids Composter

  6. Biosolids Composter Constructed with new wastewater treatment plant in 1987. Biosolids are mixed with sawdust. In two 18’ x 12’ high x 66’ long Reactor Tunnels. Average detention time in the reactors is 20 days.

  7. Biosolids Composter There is an additional 15 days in the Cure Bay System. • DEQ permit rules require meeting a temperature criteria of > 131o F for three continuous days and > 104o F for 14 days. • Meeting this temperature criterion controls pathogenic organisms

  8. Biosolids Composter • There are two classifications for treated biosolids, Class A & B. • With A being the most stringently regulated with the least restrictions on use. Newberg meets Class A with the added designation of “Exceptional Quality”

  9. Biosolids Composter The City sells all the Compost it makes and can be sold out for weeks at a time. In 2008 3,700 cubic yards of Compost was generated and sold at $10/cyd = $37,000.

  10. Wastewater Reuse Facility 2005, -Newberg’s first golf course opened with 9-holes. 2007 - The second 9 were added in 2007. Average of 366,000 gallons per day and have reached a peak of 933,000 gallons. Majority of irrigation at night Presented a challenge to refill our 12-million gallon reservoirs over night to meet the following day’s demand.

  11. Wastewater Reuse Facility The reuse system is a membrane filtration technology. Treated wastewater that would normally be discharged to the Willamette River is diverted to the membrane facility Then processed through the membranes.

  12. Wastewater Reuse Facility The processed water is pumped to and stored at the golf course in their 8-million gallon pond.

  13. Wastewater Reuse Facility There are four classifications for recycled wastewater. Newberg meets Class A the most stringent with the least amount of restrictions on use. The microfiltration process has a membrane porosity size of 0.1 microns Human hair is 100 microns, Red blood cell is 7 microns This filtration porosity size removes bacteria and most turbidity particles. Giardia  8 - 15 microns Cryptosporidium 3 - 5 microns

  14. Wastewater Reuse Facility Cost: Pall Membrane System = $764K, Reuse system = $3.15M and Pipeline = $873K totaling $4.79M. Funding: Water system development charges (50%), wastewater system development charges (25%) and wastewater utility rates (25%). Benefits: Non-potable water is used for irrigation thereby reserving drinking water capacity. Willamette River water quality standards now address effluent temperatures. The permitted temperature level varies by volume discharged. The lower the volume the higher the permitted temperature. There have been times during the day where there is little to no wastewater effluent discharging to the Willamette River as the demand at the golf course consumes most or all of the WWTP effluent flow.

  15. Wastewater Reuse Facility • Future: • Extend pipe network throughout city. • Customers waiting in the wings: • Chehalem Park and Rec District for all of their parks • Allison Inn • George Fox University Sports Complex

  16. Wastewater Reuse Facility 2005, -Newberg’s first golf course opened with 9-holes. 2007 - The second 9 were added in 2007. Average of 366,000 gallons per day and have reached a peak of 933,000 gallons. Majority of irrigation at night Presented a challenge to refill our 12-million gallon reservoirs over night to meet the following day’s demand.

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