Agenda - Council - 02/12/2008 - Laserfiche WebLink

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The above projects are based upon unit price projections from past years. At the time of this writing staff is awaiting confirmation of anticipated unit prices from contractors who are awaiting confirmation from their oil suppliers. The total budget for the 2008 program is which will obtain funding from the following sources: Developer Escrows $ 89,176 MSA $ 176,648 City $ 442,857 Assessments $ 319,357 Total Revenue $1,001,376 New Program Elements: This year is the first year of a seven year program to phase out the previous policy of assessing property owners 50% of the sealcoating project cost. The 2008 sealcoating project will assess 43% of the total project. This will decrease by 7% per year until the entire assessment on sealcoating will be eliminated in 2014. Prior to preparing the feasibility study staff proposes several technical modification changes to the program specifications over past years. Peagravel has been historically used as the sealcoat cover aggregate on the City's programs. It is the lowest cost cover aggregate. Because it not as likely to lie on its most stable side, it tends to be more susceptible to plow damage and being rolled by turning tires which can lead to tracking complaints. Crushed aggregate on the other hand becomes embedded on its flattest side and is less prone to stripping and tracking. Staff proposes using crushed granite in the 20Q8 program. Another proposed modification will be to use a polymer modified asphalt emulsion on cul de sacs. The polymer creates a strong electrical bond between the oil and the aggregate which greatly increases the adherence of the chip to the street surface. The cost of polymer modified asphalt is anticipated to be 20% higher than the CRS 2 oil which has been used in the past and will be on higher speed MSA Streets and on cul de sacs. Cul de sacs experience a great number of turning vehicles and are the sites of most areas of aggregate loss associated with our sealcoating program. This is more expensive and will continue to be used on the remainder of the streets. A citizen informational meeting will be held again this year to answer questions regarding the program and also to identify any additional improvements that should be made in advance of the street maintenance work. Staff will use this as an opportunity to hear from local residents of any issues which could best be remedied prior to the street work taking place, as well as to answer questions regarding the program and its process. Recommendation: Staff recommends that the Committee direct staff to prepare a feasibility study for the 2008 Street Maintenance Program. —228—