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Structural engineers Andy Thompson and Ibbi Almufti do a general assessment of the Vintner's Collective building on Monday morning, Aug. 25, 2014, one day after the South Napa earthquake struck the Bay Area. (Karl Mondon/Bay Area News Group)

A building is red-tagged in downtown Napa, Calif., Monday morning Aug. 25, 2014, one day after the South Napa earthquake struck the Bay Area. (Karl Mondon/Bay Area News Group)

Structural engineer Eferen Segura, working with his sons Eferen, Jr. and Manuel, inspects an apartment building for earthquake damage in Napa, Calif., Monday, Aug. 25, 2014, one day after the South Napa earthquake struck the Bay Area. (Karl Mondon/Bay Area News Group) ( Staff Photojournalist )

A Contra Costa Water District crew repair a broken water main on Oak St. in Napa, Calif., on Monday, Aug. 25, 2014. Dozens of water mains broke when the 6.0 magnitude earthquake Sunday. From left to right is Trevor Spady, a worker who didn't want name used and Cris Leffle.(Gary Reyes/Bay Area News Group) ( Staff Photojournalist )

Residents evacuate a red-tagged residence on Fourth Street in earthquake-damaged Napa, Calif., Monday, Aug. 25, 2014, one day after the South Napa earthquake struck the Bay Area. (Karl Mondon/Bay Area News Group) ( Staff Photojournalist )

Police tape surrounds a house knocked off its foundation on First Street in Napa, Calif., Monday evening, Aug. 25, 2014, one day after the South Napa earthquake struck the Bay Area. (Karl Mondon/Bay Area News Group)

Police tape surrounds a house knocked off its foundation on First Street in Napa, Calif., Monday evening, Aug. 25, 2014, one day after the South Napa earthquake struck the Bay Area. (Karl Mondon/Bay Area News Group)

An AT&T facility in earthquake-damaged Napa, Calif., remains exposed Monday, Aug. 25, 2014, one day after the South Napa earthquake struck the Bay Area. (Karl Mondon/Bay Area News Group) ( Staff Photojournalist )

Structural engineer Ibbi Almufti and Lauren Biscombe photograph the red-tagged Goodman building in downtown Napa, Calif., Monday morning Aug. 25, 2014, one day after the South Napa earthquake struck the Bay Area. The unreinforced masonry building had been slated for earthquake retrofitting. (Karl Mondon/Bay Area News Group)

Howard Hess, 82, and Shirley DiPasquale, 78, fill up buckets of pool water to be used to flush out their toilets at Napa Valley Mobile Home Park in Napa, Calif., on Monday, Aug. 25, 2014. The Napa earthquake broke a water main yesterday and they haven't had water service since. (Gary Reyes/Bay Area News Group)

A house knocked off its foundation is red-tagged in Napa, Calif., Monday, Aug. 25, 2014, one day after the South Napa earthquake struck the Bay Area. (Karl Mondon/Bay Area News Group) ( Staff Photojournalist )

EBMUD crews fix a broken water main at Caymus and Brown Streets in earthquake-damaged Napa, Calif., Monday, Aug. 25, 2014, one day after the South Napa earthquake struck the Bay Area. (Karl Mondon/Bay Area News Group) ( Staff Photojournalist )

Olivia Kerr, Clare Holsey, Jordan Simi and Ceci Nuss advertise their bake sale for the Red Cross earthquake relief fund in Napa, Calif., Monday, Aug. 25, 2014. The girls had raised $200. (Karl Mondon/Bay Area News Group) ( Staff Photojournalist )

Hunter Schaufel, 14, helps clean up the chapel at Justin-Siena High School in Napa, Calif., on Monday, Aug. 25, 2014. Residents of Napa continue to clean up their community following the 6.0 magnitude earthquake. (Gary Reyes/Bay Area News Group)

Volunteer students clean up a storage room after the 6.0 magnitude earthquake at Justin-Siena High School in Napa, Calif., on Monday, Aug. 25, 2014. At center is Logan Showley, 17. (Gary Reyes/Bay Area News Group)

Bishop Robert Vasa, of the Archdiocese of Santa Rosa, inspects the damage to St. John the Baptist Catholic Church on Monday morning, Aug. 25, 2014, one day after the South Napa earthquake struck the Bay Area. Bishop Vasa said the church, in the background, is structurally sound, but the school building was structurally damaged. (Karl Mondon/Bay Area News Group)

Bishop Robert Vasa, of the Archdiocese of Santa Rosa, uses binoculars to inspect the damage to St. John the Baptist school Monday morning Aug. 25, 2014, one day after the South Napa earthquake struck the Bay Area. Bishop Vasa has closed the building until it can be fully assessed. (Karl Mondon/Bay Area News Group)

Volunteers Conner Deleuze, 17, and Drake Vidkjer, 18, take away a piece of a broken fountain in a courtyard at Justin-Siena High School the day after a 6.0 earthquake in Napa, Calif., on Monday, Aug. 25, 2014. (Gary Reyes/Bay Area News Group)

Bricks from an unreinforced masonry building still block the sidewalk on Main Street in Napa, Calif., Monday morning, Aug. 25, 2014, one day after the South Napa earthquake struck the Bay Area. (Karl Mondon/Bay Area News Group)

Jeanette Pierce fills up containers of water at an emergency fill station in downtown Napa, Calif., on Monday afternoon, Aug. 25, 2014, one day after the South Napa earthquake struck the Bay Area. Pierce has been without water since the quake hit and she does not expect it back soon as she lives on a block with only two houses. (Karl Mondon/Bay Area News Group)

Napa resident Elva Soria is helped to her car from American Red Cross representatives Lance Houser and Woody Baker-Cohn, right, at the Red Cross Shelter in Napa, Calif., on Monday, Aug. 25, 2014. Soria's apartment building was destroyed from Sunday's 6.0 magnitude earthquake. She spent the night at the shelter. (Gary Reyes/Bay Area News Group)

A mobile home on Clover Way at the Napa Valley Mobile Home Park slid off its foundation from yesterday's 6.0 magnitude earthquake in Napa, Calif., on Monday, Aug. 25, 2014. (Gary Reyes/Bay Area News Group)

A mobile home on Clover Way at the Napa Valley Mobile Home Park slid off its foundation from yesterday's 6.0 magnitude earthquake in Napa, Calif., on Monday, Aug. 25, 2014. (Gary Reyes/Bay Area News Group)

A fallen overhang rests on boats stored at boat yard on Vallejo Street in Napa, Calif., on Monday morning, Aug. 25, 2014, one day after the South Napa earthquake struck the Bay Area. (Karl Mondon/Bay Area News Group)

Broken windows are still visible in the air traffic control tower at the Napa Airport, Monday morning Aug. 25, 2014, one day after the South Napa earthquake struck the Bay Area. (Karl Mondon/Bay Area News Group)

Kori Barton of Walnut Creek, center left, her husband, Sammy, center, Barton's sister Bri Hadden, far right, and Hadden's fiancé Kevin Mullin, look at a damaged building on Aug. 24, 2014 at the corner of Brown and Second streets in Napa, Calif. A magnitude 6.0 earthquake struck the Bay Area in the early morning. (Dai Sugano/Bay Area News Group)

Carmen Ayala and her son, Jesus, 18, left, spend the night with battery-powered lights in their living room in Napa, Calif. after a large earthquake struck the Bay Area on Sunday, Aug. 24, 2014. (Dai Sugano/Bay Area News Group)

Carmen Ayala, center, holds her 1-year-old granddaughter, Jocelyn Gaytan, as she and her relatives spend the evening with no electricity at her home in Napa on Aug. 24, 2014. Her relatives came to help her family after a large earthquake struck the Bay Area on Sunday morning, Aug. 24, 2014. (Dai Sugano/Bay Area News Group)

American Red Cross volunteer Michelle Romero works at the emergency shelter in Napa, Calif., on Monday, Aug. 25, 2014. The Red Cross set the shelter for people in need of medical evaluation, mental health services, food and a place to stay overnight, after a magnitude 6.0 earthquake struck the Bay Area on in the early morning Sunday. (Dai Sugano/Bay Area News Group)

American Red Cross volunteers Jessica Birrer, left, and Michelle Romero work at an emergency shelter on Monday, Aug. 25, 2014 in Napa, Calif. The Red Cross set up the shelter Sunday for people in need of medical evaluation, mental health services, food and a place to stay overnight, after a 6.0 magnitude earthquake struck the Bay Area early Sunday morning. (Dai Sugano/Bay Area News Group)

Meal times are displayed at an American Red Cross emergency shelter on Monday, Aug. 25, 2014 in Napa, Calif. The Red Cross set up the shelter Sunday for people in need of medical evaluation, mental health services, food and a place to stay overnight, after a magnitude 6.0earthquake struck the Bay Area. (Dai Sugano/Bay Area News Group)

American Red Cross volunteer Michelle Romero watches a young client to make sure that she makes to her family's car safely at the parking lot of their emergency shelter in Napa, Calif., on Monday, Aug. 25, 2014. The Red Cross set up the shelter Sunday for people in need of medical evaluation, mental health services, food and a place to stay overnight, after a magnitude 6.0earthquake struck the Bay Area. (Dai Sugano/Bay Area News Group)

Onlookers look at a damaged building at night on Sunday, Aug. 24, 2014, at the corner of Brown and Third streets in Napa, Calif. A magnitude 6.0 earthquake struck the Bay Area in the early morning. (Dai Sugano/Bay Area News Group)

Fallen bricks lie on the ground in front of a damaged building at the corner of Brown and Second street in Napa, Calif., on Monday, Aug. 25, 2014. A magnitude 6.0 earthquake struck the Bay Area on in the early morning of Aug. 24, 2014. (Dai Sugano/Bay Area News Group)

Fallen bricks lie on the ground in front of a damaged building at the corner of Brown and Second streets in Napa, Calif., on Monday, Aug. 25, 2014. A magnitude 6.0 earthquake struck the Bay Area on in the early morning of Aug. 24, 2014. (Dai Sugano/Bay Area News Group)

A Napa resident Eligio Ayala, left, shakes hands with his family friend Pablo Duran, center, who came to help Ayala's family from Fairfield after a large earthquake struck the Bay Area on Sunday, Aug. 24, 2014. (Dai Sugano/Bay Area News Group)

Workers move fallen wine barrels at Saintsbury Winery following a large earthquake in Napa, Calif., on Sunday, Aug. 24, 2014. (Aric Crabb/Bay Area News Group) ( NAPA EARTHQUAKE )

Workers at Fontanella Family Winery attempt to salvage wine from toppled barrels in Napa, Calif., after an earthquake struck the Bay Area Sunday morning, Aug. 24, 2014. (Karl Mondon/Bay Area News Group)

Traffic moves along a damaged portion of Cutting Wharf Road following a large earthquake in Napa, Calif., on Sunday, Aug. 24, 2014. (Aric Crabb/Bay Area News Group) ( NAPA EARTHQUAKE )

Wine leaks from tanks at the Sebastiani winery in Sonoma, Calif., following an early morning earthquake on Sunday, Aug. 24. 2014. (Sebastiani Vineyards and Winery) ( SJM-WINEQUAKE-0825-901 )

A crowd gathers at Brown and Second Streets to view at the damage to an office building in the downtown Napa, Calif., area following a large earthquake on Sunday, Aug. 24, 2014. (Gary Reyes/Bay Area News Group)

Numerous vehicles are trapped by fallen carports at the Charter Oaks apartments on Browns Valley Road in Napa, Calif., following the South Napa earthquake Sunday morning, Aug. 24, 2014. (Karl Mondon/Bay Area News Group)

A woman risks her safety having her picture taken in front of the seriously-damaged Alexandria Building on Brown Street in downtown Napa after a 6.0 earthquake struck the Bay Area Sunday morning, Aug. 24, 2014, in Napa, Calif. (Karl Mondon/Bay Area News Group)

Stones fell from the Goodman Library over the sidewalk on First Street in downtown Napa, Calif. The building was damaged by a 6.0 earthquake that struck the Bay Area Sunday morning, Aug. 24, 2014. The landmark building was built in 1901. (Karl Mondon/Bay Area News Group)

Members of the Napa City Fire Department mop up a fire at a mobile home park on Orchard Avenue following the quake in Napa, Calif., on Sunday, Aug. 24, 2014. Four homes were destroyed by fire in this complex. (Gary Reyes/Bay Area News Group) ( Staff Photojournalist )

A firefighter from the Napa City Fire Department pulls water hoses in front of a destroyed home at the mobile home park. (Gary Reyes/Bay Area News Group) ( Staff Photojournalist )

A home smolders in a mobile home park on Orchard Ave. following a 6.0 earthquake in Napa, Calif. on Sunday, Aug. 24, 2014. Four homes were destroyed by fire in this complex. (Gary Reyes/Bay Area News Group) ( Staff Photojournalist )

Steve Becker of the Napa City Fire Department looks over the damage at a mobile home park on Orchard Ave. following a 6.0 earthquake in Napa, Calif. on Sunday, Aug. 24, 2014. Four homes were destroyed by fire in this complex. (Gary Reyes/Bay Area News Group) ( Staff Photojournalist )

Steve Brody, 68, waits for help in the community room at the Napa Valley Mobile Home Park on Orchard Ave. following a magnitude 6.0 earthquake in Napa, Calif., on Sunday, Aug. 24, 2014. Brody's home was knocked off its foundation. He was able to save his parrot, Poupon, from the room in which she was trapped.. Four homes were also destroyed by fire in this complex. (Gary Reyes/Bay Area News Group)

Steve Brody inspects damage to the interior of his mobile home after an earthquake Sunday, Aug. 24, 2014, at the Napa Valley Mobile Home Park, in Napa, Calif. A large earthquake caused significant damage and left at least three critically injured in California's northern Bay Area early Sunday, igniting fires, sending at least 87 people to a hospital, knocking out power to tens of thousands and sending residents running out of their homes in the darkness. (AP Photo/Ben Margot) ( APTOPIX California Earthquake )

A doctor examines a patient at an outdoor triage center at the Queen of the Valley Medical Center on Sunday, Aug. 24, 2014, in Napa, Calif. More than 100 people sought treatment for earthquake-related injuries. (Aric Crabb/Bay Area News Group) ( NAPA EARTHQUAKE )

Maintenance worker George Beilstein sweeps up glass from a broken window at the Napa Medical Center on Sunday, Aug. 24, 2014, in Napa, Calif. A magnitude 6.0 earthquake near Napa caused damage and sent more than 100 people to the hospital for earthquake-related injuries, according to a medical center official. (Aric Crabb/Bay Area News Group) ( NAPA EARTHQUAKE )

Red Cross volunteer Robert Muth brings in fresh food to a Red Cross shelter set up at Crosswalk Community Church following a magnitude 6.0 earthquake in Napa, Calif., on Sunday, Aug. 24, 2014. (Gary Reyes/Bay Area News Group)

A broken water main floods the street in front of the Napa Valley Mobile Home Park on Orchard Avenue following a magnitude 6.0 earthquake in Napa, Calif., on Sunday, Aug. 24, 2014. Four homes were also destroyed by fire in this complex. (Gary Reyes/Bay Area News Group)

Jean Moore, 68, walks through the damage to the kitchen area of her home at the Napa Valley Mobile Home Park on Orchard Ave. following a 6.0 earthquake in Napa, Calif. on Sunday, Aug. 24, 2014. Four homes were destroyed by fire in this complex. (Gary Reyes/Bay Area News Group)

Jean Moore, 68, checks on the damage to the living room of her home at the Napa Valley Mobile Home Park on Orchard Ave. following a 6.0 earthquake in Napa, Calif. on Sunday, Aug. 24, 2014. Four homes were destroyed by fire in this complex. She lives across the street from the burned homes. (Gary Reyes/Bay Area News Group)

Brandon Trejo uses the earthquake-rippled street on Middlebrook Drive in Napa, Calif., to get some air on his scooter after the South Napa earthquake struck the Bay Area Sunday morning, Aug. 24, 2014. (Karl Mondon/Bay Area News Group)

A car near Third and Brown Streets in downtown is crushed by fallen bricks following a large earthquake in Napa, Calif., on Sunday, Aug. 24, 2014. (Gary Reyes/Bay Area News Group)

Napa County sheriffs confer in downtown Napa, Calif., after the earthquake on Sunday morning, Aug. 24, 2014. (Karl Mondon/Bay Area News Group)

A mannequin fell from the Boho store on First Street after a 6.0 earthquake struck the Bay Area on Sunday, Aug. 24, 2014, in Napa, Calif. (Karl Mondon/Bay Area News Group)

Stones fallen from the Goodman Library cover the sidewalk on First Street in downtown Napa, Calif., damaged by a 6.0 earthquake that struck the Bay Area early Sunday, Aug. 24, 2014. (Karl Mondon/Bay Area News Group)

Steve Manasse ropes off the damaged Central Building on Brown Street in downtown, Napa, Calif., after a 6.0 earthquake Sunday morning, Aug. 24, 2014. (Karl Mondon/Bay Area News Group)

Tyler Dahl looks over a $16,000 barrel of Pinot Noir wine that fell from a rack and broke open after an earthquake at Dahl Vineyards Sunday, Aug. 24, 2014, in Yountville, Calif. A large earthquake caused significant damage and left at least three critically injured in California's northern Bay Area early Sunday, igniting fires, sending at least 87 people to a hospital, knocking out power to tens of thousands and sending residents running out of their homes in the darkness. (AP Photo/Eric Risberg) ( California Earthquake )

The Alexandria Building in downtown Napa was severely damaged by the earthquake that struck the Bay Area. (Karl Mondon/Bay Area News Group)

Firefighters work a fire that partially destroyed a home on Laurel Street in Napa, Calif., after the earthquake. (Karl Mondon/Bay Area News Group)

Bricks are in the street after a building was damaged during an earthquake in Napa, Calif., on Sunday. (AP Photo/Ellen Knickmeyer) ( STF )

Workers clean up the aisles at a Safeway in American Canyon, Calif., that was damaged by the earthquake Sunday, Aug. 24, 2014. (Gary Reyes/Bay Area News Group) ( Staff Photojournalist )

Gurbeer Singh cleans up merchandise which fell due to an earthquake at a 7-Eleven store Sunday, Aug. 24, 2014, in American Canyon, Calif. (AP Photo/Ben Margot) ( STF )

This photo provided by Lyall Davenport shows damage to a building in Napa, Calif. early Sunday, Aug. 24, 2014. Officials say an earthquake with a preliminary magnitude of 6.0 has been reported in California's northern San Francisco Bay area. (AP Photo/Lyall Davenport) ( HONS )

The Alexandria Building in downtown Napa was severely damaged by the 6.0 earthquake that struck the Bay Area Sunday morning, Aug. 24, 2014, in Napa, Calif. (Karl Mondon/Bay Area News Group)

Downtown Napa suffered save damage from the 6.0 earthquake that struck the Bay Area Sunday morning, Aug. 24, 2014, in Napa, Calif. (Karl Mondon/Bay Area News Group)

The historic Alexandria Building in downtown Napa, Calif., shows significant damage after a 6.0 earthquake on Sunday, Aug. 24, 2014. (Karl Mondon/Bay Area News Group) ( Staff Photojournalist )

A building is seen destroyed following a reported magnitude 6.0 earthquake on Aug. 24, 2014, in Napa, Calif. (Justin Sullivan/Getty Images) ( Staff )

People wearing bathrobes walk down a street following a reported magnitude 6.0 earthquake on Aug. 24, 2014, in Napa, Calif. The earthquake rocked the San Francisco Bay Area shortly after 3 a.m. (Justin Sullivan/Getty Images) ( Staff )

Glass from a business litters the ground following a reported magnitude 6.0 earthquake on Aug. 24, 2014, in Napa, Calif. The earthquake rocked the San Francisco Bay Area shortly after 3 a.m. (Justin Sullivan/Getty Images) ( Staff )

People survey a destroyed building following a reported 6.0 earthquake on Aug. 24, 2014, in Napa, Calif. The earthquake rocked the San Francisco Bay Area shortly after 3 a.m. (Justin Sullivan/Getty Images) ( Staff )

A man cleans up glass from windows broken along First Street in Napa, Calif. (Karl Mondon/Bay Area News Group)

The Novelli Bail Bonds building at 810 Brown St. in historic downtown Napa, Calif., was damaged by the 6.0 earthquake which struck the north bay around 3:20 a.m., Aug. 24, 2014. (Karl Mondon/Bay Area News Group) ( Staff Photojournalist )

Damage to State Route 121 near Cuttings Wharf Road in Napa, Calif., after a 6.0 earthquake on Sunday, Aug. 24, 2014. (Natalie Alund/Bay Area News Group)

Ken Vigoda picks up a section of stained glass that fell from the First Presbyterian Church on Randolph Street in Napa, Calif. (Karl Mondon/Bay Area News Group)

A firefighter tapes off the First Presbyterian Church on Randolph Street in Napa, Calif., on Aug. 24, 2014. (Karl Mondon/Bay Area News Group)

A bent spire sits atop a steeple on a church on Third Street in downtown Napa after a 6.0 earthquake struck the Bay Area on Sunday morning, Aug. 24, 2014, in Napa, Calif. (Karl Mondon/Bay Area News Group)

Passersby check out a home near Vallejo and Yajome Streets that slid off its foundation near downtown following a large earthquake in Napa, Calif., on Sunday, Aug. 24, 2014. (Gary Reyes/Bay Area News Group)

A home near Vallejo and Yajome Streets slid off its foundation near downtown following a large earthquake in Napa, Calif., on Sunday, Aug. 24, 2014. (Gary Reyes/Bay Area News Group)

A piece of construction equipment sinks into an earthquake-damaged spot on Browns Valley Road in Napa, Calif., after the South Napa earthquake struck the Bay Area Sunday morning, Aug. 24, 2014. (Karl Mondon/Bay Area News Group)

The U.S. Post Office on Second Street in Napa, Calif., is baldy damaged by a magnitude 6.0 earthquake that struck the Bay Area Sunday morning, Aug. 24, 2014. (Karl Mondon/Bay Area News Group)

The U.S. Post Office on Second Street in Napa, Calif., is baldy damaged by a magnitude 6.0 earthquake that struck the Bay Area Sunday morning, Aug. 24, 2014. (Karl Mondon/Bay Area News Group)

The U.S. Post Office on Second St. in Napa, Calif., is baldy damaged by a magnitude 6.0 earthquake that struck the Bay Area Sunday morning, Aug. 24, 2014. (Karl Mondon/Bay Area News Group)

The U.S. Post Office on Second St. in Napa, Calif., is left baldy damaged by a magnitude 6.0 earthquake that struck the Bay Area Sunday morning, Aug. 24, 2014. (Karl Mondon/Bay Area News Group)

The Vintner's Collective winery tasting room in Napa, Calif., is baldy damaged by a magnitude 6.0 earthquake that struck the Bay Area Sunday morning, Aug. 24, 2014. (Karl Mondon/Bay Area News Group)

The Vintner's Collective winery tasting room in Napa, Calif., is baldy damaged by a magnitude 6.0 earthquake that struck the Bay Area Sunday morning, Aug. 24, 2014. (Karl Mondon/Bay Area News Group)

Napa resident Frank Fradella takes a photo of a clock knocked askew by the South Napa earthquake in downtown Napa, Calif., on Sunday, Aug. 24, 2014. He took the photo at 11 a.m, 20 minutes after the power came back on. (Karl Mondon/Bay Area News Group)

A crowd gathers to see the damage to the Central Building across from the damaged historic courthouse in Napa, Calif., after an earthquake struck the Bay Area Sunday morning, Aug. 24, 2014. (Karl Mondon/Bay Area News Group)

Ray Particelli, owner of Napa Valley Olive Oil in Napa, Calif., mops up imported Italian balsamic vinegar that spilled during the South Nappa earthquake Sunday morning, Aug. 24, 2014. He is helped by his sons Stefan and Jules. (Karl Mondon/Bay Area News Group)

A county employee carries items out of the damaged historic courthouse to the newer criminal courthouse in Napa, Calif., following the South Napa earthquake Sunday morning, Aug. 24, 2014. (Karl Mondon/Bay Area News Group)

A worker looks out a broken window at the Napa Medical Center on Sunday, Aug. 24, 2014, in Napa, Calif. More than 100 people sought treatment for earthquake-related injuries. (Aric Crabb/Bay Area News Group) ( NAPA EARTHQUAKE )

Volunteers from the Gardian Angels patrol Franklin Street in downtown following a large earthquake in Napa, Calif., on Sunday, Aug. 24, 2014. The group of eight came from the Sacramento and Stockton chapters of the Gardian Angels. (Gary Reyes/Bay Area News Group)

Stacey Simon describes her Napa, Calif., apartment as "wrecked" but she is all right following an earthquake early Sunday, Aug. 24, 2014. (Courtesy of Stacey Simon)