2022 Pavement Preservation Project

Slurry Seal Application 2
Slurry Seal applied in 2021

Overview of Project

Road resurfacing activities for the 2022 Pavement Preservation Project will occur during the week of July 25th and the week of August 1st. Every effort is being made to complete these activities before the start of school.

Signs indicating the dates of “No Parking” will be posted 72 hours in advance of the microsurfacing leveling course and Asphalt Rubber cape seal. If your garbage collection day coincides with this work, please place your garbage carts on the street the night before collection. Garbage collection will still occur on your usual day.

Microsurfacing Leveling Course

During July 28 - 29 and August 1, a microsurfacing leveling course will be placed on segments of the following streets:

  • 3rd Street
  • Berry Lane
  • Pleasant Avenue
  • Hembree Lane (south of Old Redwood Highway)
  • Starr Road (north of Windsor River Road)

The leveling course will be placed in isolated patches, similar to a typical pavement repair. Traffic should be allowed on the new surface within 2 to 4 hours of leveling course placement. Temporary single lane closures will be required, but each street will remain open to traffic.

Asphalt Rubber Cape Seal

During the week of August 1st, an Asphalt Rubber cape seal will be applied to the entire pavement surface of the streets shown in the Cape Seal Phasing Map, available at the link below. These include:

  • Lea Street and surrounding streets
  • Tamara Way and Tamara Lane
  • Shira Street and surrounding streets
  • 3rd Street
  • Berry Lane
  • Pleasant Avenue
  • Hembree Lane (south of Old Redwood Highway)
  • Starr Road (north of Windsor River Road)

No parking will be allowed on these streets during the hours of 7:30 AM to 5:30 PM on the day shown in the Cape Seal Phasing Map. Please follow local signage indicating when parking or driving is not allowed. Only one lane at a time will be closed on Starr Road, Hembree Lane, and Pleasant Avenue. Please expect delays and consider using an alternate route.

The cape seal will be constructed in two phases on separate days: the chip seal layer will be placed on the existing pavement surface, and the slurry seal layer will be placed over the chip seal layer to provide a smooth surface for bicyclists and pedestrians.

The Contractor (Doolittle Construction) or Construction Manager (Green Valley Consulting Engineers) will distribute paper notices to affected residences indicating the dates of cape seal application. Residents with no alternate exit besides Starr Road, Hembree Lane, and Pleasant Avenue should also receive a notice even if their street will not be resurfaced. Residents are encouraged to check the Cape Seal Phasing Map at the link below for the most up to date information.

Cape Seal Phasing Map

Construction Updates

  • 8/9: New striping and markings will be placed during the next two weeks. Striping will be placed first in front of schools on Starr Road and Pleasant Avenue
  • 8/2: The southbound lane of Hembree Lane will receive a slurry seal at a later date. Remaining work will still progress in accordance with the Cape Seal Phasing Map.
  • 7/28: Chip Seal and Slurry Seal schedules have been finalized. See Cape Seal Phasing Map above.
  • 7/28: Microsufacing Leveling Course will be placed in isolated patches on Hembree Ln, 3rd St, and Berry Ln on 7/29. Leveling course will be placed on Starr Rd on 8/1.
  • 7/28: Under a separate contract with PG&E, Doolittle Construction should resurface Starburst Court with slurry seal. If this happens, Starburst Court will receive a slurry seal on the same day as Starr Road.

Construction Schedule

  • Pavement Patch Repairs: 7/13 - 7/15 (Complete)
  • Striping and Marking Removal: 7/25 - 7/30, 8/1 - 8/2 (Complete)
  • Microsurfacing Leveling Course: 7/28 - 7/29, 8/1 (Complete)
  • Chip Seal Application: 8/1 - 8/3 (Complete)
  • Slurry Seal Application: 8/2 - 8/5 (Complete)
  • Striping and Marking Installation: 8/8 - 8/12, 8/15 - 8/19
  • Raise Utility Covers to Grade: TBD
  • Walk Through and Corrective Work: TBD

Project Funding Sources

The project is funded from three sources in descending order of contribution: Senate Bill 1 (Road Repair and Accountability Act of 2017), Measure M (Traffic Relief Act for Sonoma County), and CalRecycle (Rubberized Pavement Grant Program).

Measure M provides a ¼ cent sales tax to maintain local streets through the Sonoma County Transportation Agency (SCTA). Measure M is a reliable funding source for local street maintenance projects such as the 2022 Pavement Preservation Project.

The California Department of Resources Recycling and Recovery (CalRecycle) administers the Rubberized Pavement Grant Program. As stated on the grant website, the goal of the program is “to promote markets for recycled-content surfacing products derived from waste tires generated in California and decrease the adverse environmental impacts created by unlawful disposal and stockpiling of waste tires.” The equivalent of 5,500 passenger vehicle tires will be diverted from landfills with the use of Asphalt Rubber cape seal in the 2022 Pavement Preservation Project.

Senate Bill 1 Logo
Measure M Logo
CalRecycle Logo

Frequently Asked Questions

What is an Asphalt Rubber cape seal?

An Asphalt Rubber cape seal is composed of two parts: a chip seal followed by a slurry seal. The chip seal is constructed by first spraying the asphalt binder onto the existing street surface and then spreading hot, precoated aggregate on top of the asphalt binder. The aggregate is then rolled into the binder with pneumatic rubber tire rollers or steel wheel rollers. On a separate day, the slurry seal is applied over the chip seal surface to form the “cape” and provide a smooth surface for bicyclists and pedestrians. The thickness of the final cape seal is about 5/8 of an inch.

What is a slurry seal?

Slurry seal is an asphaltic emulsion product consisting mainly of water, petroleum, aggregate, and cement. It is blended on-site in a large truck and then applied evenly across the entire street surface. A slurry seal is typically 1/4 of an inch thick.

What are the benefits of an Asphalt Rubber cape seal?

Unlike a conventional emulsion cape seal, an Asphalt Rubber cape seal uses crumb rubber to modify the asphalt binder. The modified asphalt binder is created by blending crumb rubber with asphalt cement in a reaction vessel at 400°F. The main benefit of the modified asphalt binder is that about three times as much binder material remains on the road surface after application when compared to conventional emulsion binder. The additional binder means an Asphalt Rubber cape seal can control larger cracks than a conventional emulsion cape seal or a slurry seal.

What is the rubber component of an Asphalt Rubber cape seal?

The crumb rubber particles used in the Asphalt Rubber cape seal are manufactured by grinding automobile waste tires until the average particle size is about 1mm in diameter (the appearance is similar to coffee grounds). This project will divert the equivalent of 5,500 passenger vehicle tires from landfills. This equates to 6.4 passenger vehicle tires per 100 square yards of Asphalt Rubber cape seal.

Why is my street being resurfaced with a chip seal? I don’t like the rough surface or loose chips.

The chip seal is only the first layer of the cape seal. A slurry seal will be applied over the chip seal at a later date. Please drive at a lower speed after the chip seal is first placed and allow more distance between vehicles to avoid flying chips.

What is the purpose of the cape seal?

Streets deteriorate over time with exposure to weather and loading from vehicles. Applying a cape seal extends the life of the street by providing a new wearing surface and preventing the pavement from deteriorating further. The cape seal treats pavement deterioration such as alligator cracking that can not be corrected with a slurry seal. Additionally, a cape seal is less than half the cost of a 1.5 inch asphalt concrete overlay and provides similar reflective crack stopping performance. This allows the Town to resurface more streets within the same budget.

How will the cape seal application affect me?

Your street will be closed on two separate days between the hours of 7:30 AM to 5:30 PM. You will not have vehicle access to your driveway during that time, though pedestrian access will be maintained on sidewalks.

What can I expect before the cape seal process?

Public outreach through door hangers or paper notices will occur one week prior to the resurfacing work. Signs indicating the dates of “No Parking” will be posted 72 hours in advance of each pavement seal application.

What can I expect during the cape seal process?

All vehicles and objects must be removed from the street including trailers, basketball hoops, etc. Garbage and recycling carts can be left in the street if your collection day coincides with the pavement seal application. Just prior to the pavement seal application, the street is swept with a mechanical street sweeper. The chip seal and slurry seal will be applied on separate days and may take several hours to apply and cure. During that time, motorists, pedestrians, and pets must stay out of street so as not to ruin the application and to avoid getting asphalt on vehicles, shoes, and paws. The slurry seal will take longer to cure in shaded areas.

What can I expect after the cape seal process?

Once the pavement seal has cured for several hours it will be reopened to traffic. At this time, the pavement seal is very tender. Any sharp turns and turning of vehicle wheels while not moving will tear the surface. Please avoid making sharp turns or turning your wheels while not moving to keep the street looking its best. It will take several days before sharp turns won’t cause tears in the slurry seal. After the slurry seal has cured for one week, traffic striping will be installed. As the slurry seal cures it will turn from brown to black and the street will typically have a sandy or gravel-like coating. This material is picked up by street sweepers once the curing process is complete. Please check the Town’s street sweeping schedule for the first month after slurry seal placement and be sure to clear the street so the sweepers can pick up loose material.

What can I do to help make the work go smoothly?

  • Try to reschedule any visitors or deliveries.
  • Plan ahead and anticipate parking issues and how you will get in and out.
  • Park on nearby, unaffected streets if necessary.
  • Keep children and pets away from the street while work is being performed.
  • Whenever possible, avoid construction areas and use alternate access routes.
  • Check your shoes before walking into your house. The loose rocks can scratch wood floors.
  • Respect construction signs, cones, and barricades. Do not drive into areas that are coned or barricaded off.
  • Drive slowly; the pavement can be slippery because of loose gravel or sand.
  • Do not drive on the treated streets until the lanes have been reopened to traffic.
  • Warn your children to be careful while riding their bicycles until the loose gravel/sand is swept up.
  • Continue to park your car off your street or cover it until the initial sweeping is completed. Loose gravel or slurry mix thrown up by speeding vehicles could damage your car’s paint.
  • Avoid outdoor water use if it causes water to flow onto the street. Water will hinder the slurry seal curing process. Do not wash your car or water or water your lawn on your slurry seal day.

Scuff marks are appearing in the slurry seal.

Slurry seal placed on neighborhood streets tends to get more scuffing and blemishes than through streets due to the sharp turning being done as a resident exits their driveway or a parking space. These marks are superficial and do not constitute a failure of the product. For the first few days after slurry seal application, please avoid making sharp turns or turning your wheels while not moving to keep the street looking its best.

What if I need to drive somewhere?

Park your vehicle on a nearby street that is not being resurfaced. Check the Cape Seal Phasing map and area signage to plan your route and parking spot. The streets are phased to provide room for parking on adjacent streets.

What if there is an emergency?

Should an emergency arise, emergency vehicles will be given access to the street. A fresh chip seal or slurry seal can be driven on in a true emergency, but asphalt will adhere to all parts of the vehicle and damage the vehicle. The street would then need to be resurfaced.

What about garbage pickup, mail delivery, or other deliveries from service providers?

All work is coordinated with the postal service, garbage haulers, and other service providers. In most cases, you will not experience any service interruptions. Garbage haulers and mail carriers will work around the slurry seal application to provide service, however, it may not be at the usual time of day.