CITY OF LOS ANGELES GREENWASTE RECYCLING PROGRAM

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1 CITY OF LOS ANGELES GREENWASTE RECYCLING PROGRAM Why do we recycle? California Assembly Bill 939 mandates that all municipalities must reduce amount of green waste sent to the dumps by 50% by the year

2 Phase One Program began: 1993 Who was involved: Street Tree Division Staffing requirement: 1-Supervisor 1-Equipment Operator 1-Truck Operator Equipment used: 1-Olathe Tub Grinder 1-Skiploader 1-Tractor Trailer Processing location: Cahuenga Yard parking lot (approx sq. ft.) 8000 tons of greenwaste processed annually. Phase Two Program began: 1996 Who was involved: Street Tree Division, Dept. of Water and Power Staffing requirement: 1-Supervisor 1-Equipment Operator 1-Truck Operator Equipment used: 1-Morbark 1100 Tub Grinder 2-Skiploaders 3-Tractor Trailers Processing location: Alabama Avenue Maintenance Yard (approx. 40,000 sq. ft.) 11,000 tons of greenwaste processed annually.

3 PHASE THREE Program began: 1998 Who was involved: Street Tree Division, Sanitation, Recreation and Parks, the Dept. of Water and Power Staffing requirement: 1-Supervisor 3-Equipment Operators 4-Truck Operators 10-Laborers Equipment used: 2-Morbark 1300 Tub Grinders 1-Morbark 1100 Tub Grinder 3-Skiploaders 5 18-wheelers Processing Location: Van Norman Reservoir (approx. 600,000 sq. ft.) Approx. 60,000 tons of greenwaste processed annually. Greenwaste Streams Tree trimmings generated by City crews and contract crews. Yard trimmings from residential areas.

4 City crews trimming trees and generating greenwaste. Removal of greenwaste for transport to recycling center. Green bins are used for yard trimmings. Blue bins are for glass, plastic and paper. Black bins are for rubbish.

5 Yard Trimmings Sanitation trucks pickup yard trimmings. Sanitation trucks pickup yard trimmings. Christmas Tree Recycling

6 Christmas Tree Recycling Operational Challenges Site location Site layout Dirt vs Asphalt Staffing Dust/odor/noise control Equipment selection and acquisition Quality of the raw material Quality control of finished product Marketing

7 Staffing Requirements 2 Supervisors 5 Equipment Operators 7 Truck Operators 22 Laborers Required Equipment Three tub grinders are used to grind tree trimmings and yard trimmings into 2 4 inch mulch. Two trommel screens are used to aerate the yard trimmings and separate the coarse mulch from the fine mulch. Four skiploaders are used to mix the yard trimmings with the tree trimmings and to load the mulch into trucks for delivery. Four skiploaders are used to mix the yard trimmings with the tree trimmings and to load the mulch into trucks for delivery. Seven tractor trailer trucks are used to transport mulch off-site to various projects.

8 Yard trimmings arrive at the recycling center scales. 150 tons of yard trimmings are delivered daily. Yard trimmings are processed through the trommel screen. Trommel screen separates fines from yard trimmings.

9 Yard trimmings travel from the trommel screen to the picking Trash is manually removed from the yard trimmings. station, where trash is removed. Cleaned yard trimmings roll off the picking station.

10 Trucks arrive at the recycling center scales. 130 tons of tree trimmings are delivered daily. Cleaned yard trimmings are mixed with tree trimmings. 50% yard trimmings and 50% tree trimming make the ideal mulch.

11 Greenwaste is loaded into the grinders to generate mulch. Mulched is processed through a secondary screen to create a ½ inch mulch. Half inch mulch material.

12 Finished Product Mulch is prepared for transport. Mulch is loaded into trucks. 280 tons of greenwaste processed daily. Mulch is delivered to customers.

13 Who Are Our Customers? Citrus and avocado growers Community gardens Schools City parks and golf courses Landscape projects Future Outlook Wood utilization Potential energy resource (green energy) Decorative colored mulch What about bugs & diseases?

14 Milling for grade Plain Quarter Rift

15 Milling Challenges: Metal

16 Air drying Air drying Kiln Drying

17 Added Value Wood Products

18 Practical Milling Matching Species With Product Types

19 Conclusions Important to choose the appropriate site. Dedicated staff. Proper equipment (develop a partnership with manufacturer). Develop your market (diversify). Political and neighbor buy-in. Resources CDF, USFS, CIWMB, Sawmill & woodlot magazine, Wood-Mizer, Bailey s & Lucas, mills Internet sites,

20 For Further Information Contact: George Gonzalez, Chief Forester 600 South Spring Street, 10 th Floor Los Angeles, CA (213) Website- Tree