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East Bay Regional Park District needs a lot more information after receiving two proposals from one vendor to revitalize the waterslides at Shadow Cliffs Regional Recreation Area.

"At this stage we have lots of questions that we're going to be asking the vendor," said Jim O'Connor, assistant general manager of the East Bay Regional Park District, on Tuesday.

He will report to the district operations committee next week that there were two proposals, but said he will need more information before submitting a complete report. Then the committee will vote to accept or modify the proposal.

"At that point it will go to the full board," O'Connor said. "We just have too many unanswered questions to have a presentation at this month's meeting."

The four-chute waterslides, which opened in 1981, were closed for the 2012 season after winter inspections showed the need for repairs. Public meetings brought out residents that supported the Pleasanton waterslides as a recreational facility and as a place for teen employment.

The Park District commissioned a study of the facility last summer by Water Ventures, which concluded the "site is an excellent venue for such a water park," and a request for proposals went out with a deadline of Dec. 20.

The concession area is about 3.5 acres and includes the four waterslides, a maintenance building, office, storage, separate men's and women's restrooms with dressing areas and lockers, and a picnic area with a shade structure, picnic tables and barbeques. Structures also must be made ADA compliant.

Water Ventures reported that in order to be successful, the waterslides facility should offer more opportunities for water play, such as wave pools, leisure pools and lazy rivers. But it said improvements needed before reopening the current facility would total $885,100.

"The cost estimate for the renovation work would be $1.4 million when you add up all the engineering costs, permitting, inspection," O'Connor said in September.

O'Connor was doubtful that the waterslides could reopen for the 2013 season since the developer would need to have funding in place to get permits, including a building permit from Pleasanton, health and safety permits as well as others from the county that would require inspections.

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