CASTLE ROCK — Taxpayers here will be asked to help with both the library and police costs in 2010, the city council decided Monday.

Any levy could face a tough challenge in these economic times, but councilmembers said Monday they’re hopeful both will pass. And, they don’t think the two will compete against each other on the Aug. 18 primary ballot.

The library levy is a re-run of an annual levy that failed by just four votes in November. The library levy would cost an additional 50 cents per $1,000 in assessed value, or $75 a year for the owner of a $150,000 home. The levy would raise $42,000 for the library — it’s main source of funds.

The public safety levy is new to the city. It’s an attempt to balance the 2010 budget without having to reduce needed services. If the police levy were to fail, councilmembers said at previous meetings that it least it would give them direction when making cuts. In addition, councilmembers said they wanted voters to have a say before any more staff were reduced.

The levy would cost an additional $2.50 per $1,000 in assessed value, or $375 a year for the owner of a $150,000 home. It would raise nearly $250,000 for the police department in 2010.

Initially, there were concerns that running both measures at the same time could hurt each one’s chances. After studying the matter further, though, Mayor Barbara Larsen said she doesn’t think having both levies on the same ballot is a problem.

Councilman Earl Queen agreed, saying he believes the library levy will pass given the closeness of the last election. And while the police levy may be closer, Queen said he’s hopeful about its chances as well.

Both measures were approved unanimously by the council. (Councilman Mike Mask was not present for Monday’s vote.)

The Friends of the Library nonprofit group is paying for the estimated $3,000 cost of the library election. The library stayed open since the levy failure thanks to donations.

The city will pay the costs — also about $3,000 — to run the police levy. The police levy, if approved, would be for one year. Any additional police levies would have to be approved in another election.

Though the elections are in August, neither the library nor the city would receive any money from the levies until 2010 when new taxes are levied and collected.