Gov. Robert L. Ehrlich Jr.'s plan to install 3,000 slots at Pimlico Race Course would require $65 million in up-front transportation improvements - money that is not accounted for in the governor's plans - according to estimates prepared by the city.

Documents obtained by The Sun also show that Mayor Martin O'Malley's administration estimates the plan would cost the city $9.3 million a year in public safety, transportation and sanitation costs. Under projections now, that would absorb Baltimore's entire share of the slots proceeds - before community impact and social costs are taken into consideration.

The cost estimates for providing services at Pimlico could present new obstacles to enactment of the governor's bill allowing the installation of 10,500 slot machines at four Maryland racetracks. The Ehrlich bill faces its first hearing in the House of Delegates today amid widespread dissatisfaction over the administration's inability to say definitively how the money would be divided.

Legislators who were briefed by aides to the governor on his planned revisions to his original bill - which has been widely dismissed as unworkable - were disappointed yesterday at the lack of specific information.

Many had expected to learn the results of a study by KPMG LLP, a consultant hired to examine the administration's original proposal, but were told the analysis was not complete.

"There was nothing to it. There was absolutely nothing - period," said Sen. James E. DeGrange Sr., a member of the Senate committee that will hold hearings on the bill tomorrow. The Anne Arundel County Democrat said he was expecting a meeting with the governor and was "shocked" when Ehrlich didn't show up for the briefing.

The governor did find time later in the day to meet with horse racing interests, two sources familiar with the meeting said.

Representatives of the state's racetrack owners were meeting with the governor's top aides when Ehrlich dropped in unexpectedly. The governor thanked them for their work and told them: "Don't oppose the bill, we're going to work it out," one source said.

A second source said Ehrlich told the group that his administration is not prepared to propose new numbers for splitting slots revenue at tomorrow's hearing but reassured them that problems will be resolved.

Senate President Thomas V. Mike Miller, a slots supporter, said he was not happy with what he learned in the briefing. He pointedly noted that Ehrlich found time for the racetrack owners but not the legislators - but then added he understood. "In fairness to the governor, the staff didn't have the numbers available by then," Miller said.

Ehrlich appeared confident as he left the State House last night. "I am quite pleased with the progress that's been made," he said, adding that the administration will unveil its revised proposal this week.

With the 90-day legislative session more than halfway over, some legislators said Ehrlich may be running out of time.

House Speaker Michael E. Busch, an opponent of slots, said the administration does not appear to have a well-thought-out policy on slots.

"If we don't have the numbers, and we don't know what the percentages are, it just adds more to the reasoned approach of waiting a year and doing a study of the implications of slots gambling in Maryland," he said.

The governor's revised bill could face serious problems if it fails to provide enough money to Baltimore to offset the anticipated costs of a 365-day-a-year, 18-hour-a-day racetrack casino in a largely residential area, city lawmakers said.

Sen. Nathaniel J. McFadden and Del. Salima S. Marriott, chairman and chairwoman of the city's Senate and House delegations, said the economic effect on Baltimore and the Pimlico neighborhoods have to be addressed for the bill to win their votes.

"I think the entire delegation would concur with that," McFadden said.

McFadden said it appears the city needs to receive from 8 percent to 10 percent of the slots proceeds - rather than the 3 percent envisioned in the original Ehrlich proposal - to cover its costs and cushion the effect on nearby neighborhoods.

Miller, however, said he believes Pimlico's main problem is parking - not transportation.