Marin County Dept. of Public Works Building Maintenance Energy Program

1. Marin County Dept. of Public Works Building Maintenance Energy Program In an effort to conserve energy and increase sustainability Dept. of Public Works in 1998 embarked on a Energy Management Program. Using in-house maintenance personnel and outside contractors, the county surveyed all county owned buildings for ways to conserve energy. Many different energy management approaches were used.

2. LightingRetrofits: There are thousands of light fixtures throughout the facilities we maintain. Public Works has replaced nearly all fluorescent T12 lamps with higher efficiency T8s. In the process receiving tens of thousands of dollars in energy rebates. These fixtures were converted from 4 T12 at 112 watts per fixture to 2 T8 at 52 watts a fixture.

3. Computerized lighting controls were installed to reduced lighting run times. A security card access system has been installed, Which also activates lighting systems after hours.

4. Energy Savings:Lighting 1.4 year payback on Lighting Projects

5. Electronic lighting control system to regulate power and stabilize voltage. For circuits dedicated to electronic ballast with T8/T5,or electromagnetic T12 fluorescent lighting, saving are 25%. Globalight Lighting Power Controllers: Installed in the Hall of Justice in 2005 these four controllers are saving 111,873 kWh per year equal to $16,780.95 Globalight is compatible with all magnetic HID ballast, and all HID lamps. This includes High Pressure Sodium, Metal Halide, Pulse Start, Mercury Vapor, and Low Pressure Sodium lamps.

6. Variable Frequency Drives: • Energy saving motors and Variable Frequency Drives have been installed. • Variable Frequency Drives were added to the Chillers in 2004, reducing energy cost by $70,000 a year and will receive a $60,000 rebate . All motors 5 HP and above now have VFDs

7. Equipment Replacement and Upgrades: Boilers have been retrofitted with computerized controls, saving energy and reducing emissions to the environment. n Annual Savings: Elec. $5,444 Gas $10,250 2 year payback

8. Older less efficient Chillers have been replaced with high efficient Chillers using environmentally safe refrigerants. Energy Savings Calculated at 29%

9. Photovoltaic: Cultural Services Department.Installation of a 205.6 KW photovoltaic panels array on the exhibit hall as well as improving energy efficiency by assisting with the upgrade of current HVAC systems with energy efficient systems. It is anticipated these upgrades will save $97,314 annually. County General Services Building has a new 75KW Photovoltaic system in place. Saving $24,000 a year in energy cost. 120 N. Redwood Drive. A 164.4 kW photovoltaic (PV) system has been installed on Social Services Building at 120 North Redwood Drive saving $46,524 annually. There is was also a lighting upgrade at this building which will result in additional savings of about $8,000 annually. A total of 483 KW in Photo Voltaic Projects. Saving $167,838 Yearly

10. LEED Certified Throckmorton Fire. The new fire station includes multiple energy efficiency measures, a 38KW photovoltaic system, rapidly renewable and recycled content building materials, low-emitting materials including paints, sealants and carpets, day lighting for 75% of spaces, 50-75% construction waste diversion, and water efficient landscaping. The building will be LEED certified, and plans are for the LEED rating to meet the gold standard. Marin Health and Wellness Campus.This project consists of renovating about 83,000 square feet of building space for the use as the Health and Wellness Campus by Health & Human Services and Marin County Clinic. This project has been renovated to meet minimum LEED gold standard.

11. Total Energy Savings to Date $3,578,781 $753,679 $324,000 $475,252 Rebates Annual Savings Overall Payback is 5.25 years

12. Water Conservation Practices Water conservation practices also save Energy: Why? Because one of the biggest use of electricity in most cities is supplying water and cleaning it up after it's been used! Water Projects Completed Low Flow Toilets A project to replace all Civic Center toilets to low-flow models was completed in June 2003 and will save overall water usage by as much as 5%. Reclaimed Water The County utilizes reclaimed water for landscaping needs and in the cooling towers, which provide heat during the winter months. Reclaimed water use has increased from 19% of overall water usage in 2001 to 27% in 2003. Each year, these measures conserves enough water to provide the average household water for twenty-five years as well as additional energy savings due to reduction in pumping and water treatment.

13. Water Projects Underway Bathroom Renovation. Motion sensor faucets, low flow toilets and waterless urinals have been installed for water conservation. It is estimated a standard urinal uses 48,000 gallons of water per year. The County is in the process of installing 63 waterless urinals The waterless urinals alone will save a total of 3,024,000 gallons of fresh water per year. This amount is the equivalent of a three year supply of drinking water for 4,320 persons. Combined, these conservation measures put in place have reduced water consumption 11% between 2000 and 2003. This is enough water to provide irrigation to a 1,081 acre vineyard. Saved $2786 in Energy cost.

14. Current Energy Projects: County Jail: Installed higher efficiency hot water boilers Juvenile Hall: Install DDC controls to improve energy efficiency Public Works retained Kenwood Energy to complete a preliminary energy management study of five County facilities: The Civic Center The County Jail 120 Redwood Drive 10 and 20 North San Pedro County Juvenile Justice Center JJC Services Building

15. Besides saving Marin’s taxpayers hundreds of thousands of dollars in energy cost yearly, this program has benefited the World community as a whole. These projects represent a total reduction of green house gas emissions of 3,093,048 lbs. per year, which is the equivalent of planting 424 acres of trees.