07 - Laserfiche WebLink

BACKGROUND The City has two annual projects designed to maintain roadway infrastructure: The Annual Street Resurfacing and Preventative Maintenance Project and the Annual Slurry Seal Project. The first project resurfaces various roadways by overlaying the existing pavement with a new layer of asphalt concrete, while the other project slurry seals a different set of roadways. The resurfacing project is considered a street reconstruction project, while the slurry project is a preventative maintenance project. Together, these projects are designed to maintain the City's roadway pavement condition. Slurry seal is placed on streets that are in a good condition to seal the street before deterioration of the surface occurs, which would allow water to penetrate the roadbed and lead to premature failure of the roadway. Slurry seal treatments are expected to last six to eight years depending on the amount of traffic on the street. Slurry seal costs approximately one-fifth of the cost to overlay a street with a new layer of asphalt concrete and is a cost-effective approach to extend the useful life of the pavement. Slurry seal is a petroleum-based emulsion product that consists of a mixture of water, asphalt emulsion, aggregate, polymer, and chemical additives. It is blended on-site in a large truck, and then applied evenly across the entire roadway surface of an asphalt street. The slurry seal is typically 1/4 to 3/8 of an inch thick. The aggregate is a mixture of fine sand and black volcanic rock that increases the roadway friction and maintains a black surface several years after placement. The slurry seal process typically requires streets to be temporally closed to traffic between 8 a.m. and 5 p.m. The slurry seal will be tender and subject to surface blemishes typically for a few weeks following the placement of the slurry, depending heavily on the weather. Residents are provided information on how to reduce the surface blemishes by not making sharp turns or turning the wheels while the car is not moving. DISCUSSION The project consists of applying slurry seal on 1.45 million square feet of pavement on 58 street segments. See Attachment 2 for a map of locations. STREET NAME BEGIN LOCATION END LOCATION AREA (SF) BLACK AVE HOPYARD RD CRESTLINE RD 25,211 BLACK AVE GREENWOOD RD LOGANBERRY WY (EAST) 28,341 BLACK AVE LOGANBERRY WY (EAST) SANTA RITA RD 54,529 DEL VALLE PKWY HOPYARD RD 37 FT W/O HOMETOWN WY 131,295 PETERS AVE DIVISION ST OLD BERNAL AVE 63,820 PLEASANTON AVE ST MARY ST DIVISION ST 5,916 PLEASANTON AVE DIVISION ST ROSE AVE 13,659 DIVISION ST ST MARY ST PLEASANTON AVE 5,465 I DIVISION ST END PLEASANTON AVE 3,625 SECOND ST KOTTINGER DR NEAL ST 55,997 BONITA AVE ENTRADA DR MIRADOR DR 51,975 BONITA AVE ANGELA ST MIRADOR DR 50,357 MIRADOR CT MIRADOR DR END 13,907 Page 2 of 4