1. Proposed Protocol for Natural Cooling in LAHD Financed Housing 2010 NOFA Stakeholders Meeting 9/29/09

2. The Idea Development of Optional Protocol for Natural Cooling in Affordable Housing Mitigate First and Operating Cost Pressures Contribute to LA leadership on green building and GHG reduction Respond to Developer Interest Maintain Principles of “Safe, Decent, Affordable”

3. Affordable Housing Principles Safe, Decent, Affordable Affordable = First cost and Operating Cost Decent = Comfortable Safe = Safe

4. Three Step Protocol Technical Requirements Design Submission Construction Verification Safety Comfort Affordability

5. Comfort - Background

6. Our Climate

7. Comfort and Airflow

8. Comfort - Standards ASHRAE 55 Standards –Internationally Accepted –CA Code Slightly less stringent Straight Summer Temperature –Max indoor temperature of 82 degrees

9. Adaptive Comfort Model

10. Comfort - Requirements No indoor temperature can exceed 82 degrees Can’t rely on open windows If modeling approach does not count air movement then: –3 degree credit for ceiling fans in bedrooms and living rooms

11. Comfort - Design Daily High temperature model Major Strategies indexed to Arch/Mechanical Plans Inspection Checklist

12. Comfort - Construction Field Inspection of measures on the inspection checklist Likely to be at least two inspections, possibly more

13. Sample Project - Canoga Park

14. Sample Project - Downtown

15. Sample Project - South LA

16. Safety - Requirements 1.Place of Refuge - Size 2.Temporary AC 3.Management Protocol for Access/Distribution 4.Informed Consent

17. Place of Refuge - Size Must be mechanically cooled Have occupancy levels permitted to accommodate all occupants of top floor (except Northern exposure) and all occupants of west exposed units (except ground floor units)

18. Place of Refuge - Size TCAC Common Area Standards Hypothetical Project < 31600sf 30 units 675sf 31 - 601000sf 50 units 1125sf 61 - 1001400sf 72 units 1620sf > 1001600sf 104 units 2340sf

19. Temporary Air Conditioning Portable machines for 5% of units Minimum SEER/EER Value Electrical Panel Sized to Accommodate No window units allowed Approx $400

20. Emergency Heat Plan Protocol for Access to Place of Refuge and/or Distribution of Temp AC –Access/Distribution required to be offered when outdoor nighttime low does not fall below 72 - 75? degrees Informed Consent –Part of the New Occupant Package Access and Information

21. Safety - Design Confirm Size of Place of Refuge –Could be on Major Strategies Index or Inspection Checklist Temporary AC purchase and Electrical Panel Sizing on Plans/Specs/ Mechanical Schedules Emergency Heat Plan Protocol for Property Management and On-Site Manager

22. Safety - Construction Confirm Emergency Heat Plan Protocol for Property Management and On-Site Manager

23. Affordability Savings Estimates –$2,500/unit first cost –35% energy cost savings Requirement –No added first Cost Design –First cost analysis –Energy savings analysis

24. Technical Requirements Design Submission Construction Verification Safety 1.Refuge 2.Temp AC 3.Management 4.Consent a)Refuge Size b)Temp AC c)Access + Consent Docs Documents Comfort 1.ASHRAE 55 2.Adaptive Comfort a)Analysis b)Strategies c)Checklist Checklist Affordability 1.No Added First Cost a)First costs b)Operating Costs c)Energy Savings