Sharon Bychowski, next-door neighbor to Stacy Peterson — the Bolingbrook mother of two who has been missing since Oct. 28 — said she is committed to finding Peterson and bringing her “back home.”

“There is no question, we will eventually find Stacy and bring her home,” said Bychowski. “I think I’ve slept two hours in four days, but I don’t care. I owe Stacy that much.”

Bychowski has spearheaded an effort by local volunteers to search for Peterson, and over the weekend more than 75 volunteers searched area wetlands, parks and lakes seeking clues into Peterson’s disappearance.

The search turned up no clues.

But by Monday afternoon, a team from Texas EquuSearch, a nonprofit organization specializing in conducting searches for missing persons, had arrived in Bolingbrook to set up headquarters at a local church, Bychowski said.

“They are out now establishing a headquarters at a local church and will be out looking for Stacy again tomorrow morning,” she said.

A man who identified himself as a member of the search team specializing in underwater sonar said Monday’s windy conditions would delay the search operation until Tuesday.

Illinois State Police spokesman Trooper Mark Dorencz said state investigators had searched  seven locations unsuccessfully on Monday.

Stacy Peterson, 23, wife of Bolingbrook Police Sgt. Drew Peterson, was reported missing by family members seven days ago.

Stacy’s sister, Cassandra Cales, said the last telephone contact she had with her sister was at about 10 a.m. Sunday. After that, all attempts to reach Stacy by cell phone were unsuccessful.

Drew Peterson, a 29-year veteran on the Bolingbrook Police Department, said he spoke to Stacy at about 9 p.m. Sunday, at which time he said Stacy told him she had left him.

At 4 a.m. Monday, family members filed a missing persons report with Illinois State Police.

Family members and friends close to Stacy said she never would have left her two children, Lacy, 2, and Anthony, 4, regardless of the circumstances.

Cales recently said she does not believe her sister is still alive.

“Whether or not I think Drew had anything to do with the disappearance is irrelevant. What is important is that Stacy felt threatened, and recently told me if she were to disappear, it would not be the result of an accident,” Bychowski said.

Stacy Peterson recently told Bychowski she wanted to get out of the marriage, Bychowski said.

Stacy Peterson first met Drew Peterson when she was 17, but over the last six years “Stacy had matured and wanted to get out,” Bychowski said.

Bychowski spent the last two days organizing volunteers from the garage attached to their home, and over two days more than 75 volunteers fanned out to walk through wetlands, parks and along bodies of water seeking clues into Stacey’s disappearance and distributing hundreds of fliers.

Bychowski said she knew Stacy and Drew Peterson for more than three years and Stacy “was a feisty person, quite a person” who regularly visited the Bychowski home.

“Her two children, Lacy and Anthony, were always here and Stacy came over almost daily. Sometimes she would cook for us in our kitchen,” said Bychowski.

Bychowski said she does not believe Drew Peterson’s story that Stacy called him Sunday night and told him she was leaving him for another man.

“That whole story is a farce, a bunch of bologna,” she said.

On Thursday, investigators from the Illinois State Police executed a search warrant for the Peterson home at 6 Pheasant Chase Court.

After a five-hour search, two vehicles were impounded, as well as cartons of other items. State police have not released the contents of the cartons removed from the Peterson home.

“Prior to the search warrant being executed, Drew came over and asked me if I would move his car into our driveway for him. I told him he could move it into the driveway but not the garage. We weren’t going to hide his car for him,” Bychowski said.

“I just didn’t feel comfortable with that request,” she said.

Shortly after Stacy Peterson was listed as missing, Bychowski said, Drew Peterson was asked for a photograph of Stacy Peterson to advertise her disappearance.

“He said he didn’t have one, even though the family went on a cruise recently in which Stacy personally told me she spent about $500 on photographs. To say there was no photograph of Stacy was ridiculous,” Bychowski said.

Authorities continue to list the case as that of a missing person, not a criminal investigation.

Last week the Will County state’s attorney’s office began re-examining the March 2004 case in which Drew Peterson’s third wife, Kathleen Savio, died in her bathtub while the two were going through a divorce.

According to Chuck Pelkie, spokesman for the state’s attorney’s office, “unique and unusual circumstances” surrounding Savio’s death triggered a review of the case.

Attempts to reach the Will County state’s attorney’s office today were unsuccessful.

Bychowski said the goal of the intensified search — she said EquuSearch has, in the past, provided up to 1,500 people as volunteers — is to keep the case fresh and in the public’s eye.

“All it could take is one small clue, something someone might have missed, to help locate Stacy,” Bychowski said.

Last week state police also searched local ponds without success.

Bychowski, who said the four children living in the Peterson home now are being cared for by one of Drew Peterson’s adult sons living in North Aurora, said she no longer is in contact with Drew Peterson.

“When he publicly said Stacy left him and implied she was with someone else, I couldn’t believe it. Drew just threw her under the bus, then backed up over her a few times,” she said.