Department of Public Works
dpw.lacounty.gov
Sustainability
Ballentine Place, et al. (Transportation)
Summary
Ballentine Place, et al. project involves 5.5 miles of roadway improvements along segments of local residential streets in the unincorporated area of Covina.  The $4 million project includes roadway reconstruction with the use of recycled materials from recycled tires and aggregates from existing pavement and reutilize and modify the existing materials in-place by recycling the pavement and adding cement to the subgrade beneath the pavement to improve its strength.  The project also includes pervious sidewalk, ADA curb ramps, river rock pavers, bio-swales, and native drought tolerant landscaping.   
Benefits to Environmental Resources
Recycling asphalt pavement for on-site reuse
o Reduce haul trips and pollution emissions
o Utilize materials that typically would go to the landfill as part of the pavement mix
o Incorporating automobile tires into pavements.  For each lane mile of roadway that incorporates tire particles into the asphalt hot mix 2000 tires are eliminated from going into the landfill. 
o Treating the soil beneath the pavement by adding cement, lime or emulsion to the soil provides another in-place treatment opportunity resulting in significant environmental benefits.
o Preserve natural resources
Retain stormwater runoff within hydrological subarea
o Retention basin for stormwater infiltration into ground
o Bio-swale planters
o Pervious concrete in sidewalk 
Water conservation and treatment
o Native drought tolerant plants for landscaping
o Bio-swale planters for low flow treatment
Contribution to wellbeing of DPW and the County
o Pedestrian safety
Sidewalks and parkways improvement
o Accessibility
 ADA curb ramps
 Sidewalks and parkways connectivity
o Community aesthetics 
 New pavement
 Landscape planters in parkways 
 River rock pavers at various locations
Contribution to Economic Health
DPW performed a study that evaluated the performance of rubber roads and learned that adding tire particles to our pavement mix resulted in (a) significant reduction in pavement cracking (b) roads lasted 40 to 60 percent longer than conventional asphalt (c) less pavement noise than other pavements treatments and (d) less fading of the roadway surface.
Using recycling asphalt millings called Reclaimed Asphalt Pavement (RAP) into pavement treatments enable us to recycle these millings into our pavement treatments rather than hauling them to a landfill. 
Modified By
Cruz, Roy
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