HAMPDEN — Irving Oil Corp. representatives brought consultants, blueprints, paintings, computer-altered photographs, and even an animated model of potential traffic flow for the wall of the Hampden municipal building Wednesday night as they presented a completely revised development proposal at a public hearing.

But even with all of that information about the project for the corner of Route 1A and Canoe Club Road, they couldn’t answer all of the questions and concerns of Hampden residents and planning board members.

The board asked that Irving present yet a third proposal — and that there be a third public hearing — to address its concerns about drainage, lighting, and 24-hour operation of the complex. If approved, the project would include a gas station, convenience store with two fast-food restaurant stands, and a carwash.

Chris McAuliffe, an Irving executive, said that the next meeting would be the company’s last offer for Hampden. “It will be basically the final rendition of the plan. Those concerns that we can address we will,” he said, but he ruled out any more changes in the appearance of the complex.

Irving designers had made dramatic changes from the first proposal, including a “unique” building with wooden siding, peaked roof, and cupola complete with a weathervane on top. They had decreased the size of the whole complex and cut by more than half the size of the lighted canopy that would cover the fuel pumps.

But while nearly every resident who spoke at the crowded public hearing liked the new building, and thanked the company representatives for their responsiveness to concerns about the aesthetics of a huge gas station in the center of their village, they talked for hours about other worries.

About 100 people showed up. Many of them were members of the newly formed Hampden Committee for Sensible Development who spoke calmly and precisely, using planning board criteria to question the project.

Marjorie Lawrence said, “The architectural issue was addressed. But other concerns still remain.” She asked about the impact on traffic, safety for pedestrians, noise level, light pollution, drainage, and the possible annoyance for neighbors.

Tony Mourkas looked at one of the architect’s renderings and said, “You can’t make a silk purse out of a sow’s ear.” In spite of their ideas about landscaping, with trees, flowers and bushes, all promised in abundance, he said, “I see an oasis of concrete.”

Some people saw a different kind of oasis, citing much-needed tax revenue, and maybe even, as McAuliffe said, “the cleanest restrooms, fresh bananas, a hot cup of coffee, some employment for people in this room or your children.”

But those who saw benefits to 24-hour service, lots of fuel tanks and a carwash were far outnumbered by those worried about children walking to school past the site, or people hanging out there late at night causing trouble. And nearly all of their questions were technical and in keeping with the town’s comprehensive plan for development. They wanted to know if studies had been done on the impact of pedestrian right of way at the traffic light, whether the lighted canopy violated the town’s restrictions about signs, and where water would go after a storm.

After all the technical details, Toby Atkins, a member of the citizens committee, ended with an appeal to the board to “understand that most of these concerns and issues are best visualized — they’re not easily quantified.” He asked them to imagine the visual impact of the lights and the signs and the traffic. “I’d ask you to hear the cars, the motorcycles, the trucks and the carwash over a 24-hour cycle …”

He paused, and shook his head. The issue is bringing development into town but keeping the residential areas “livable,” he said. “I’d like to ask that we find a place for Irving in Hampden, a place where these images are not so frightening.”

But McAuliffe said Irving would consider only the site on Main Road, because it’s the only one that would meet its business needs.

“If this doesn’t take place here, we’ll be moving on to other [communities],” he said.