Tag: fire suppression

Author SuzannePosted on Categories Forests, Habitats, WildlifeTags , , ,

Costly new wildfire suppression won’t prevent catastrophic fires

Dan Silver, SONOMA COUNTY GAZETTE

A wildfire suppression plan adopted at the end of 2019 by the California Board of Forestry could cost taxpayers hundreds of millions of dollars but will do very little to actually reduce fire risk for communities in Sonoma County and throughout the state. Fire safety experts and environmental protection advocates filed suit on January 28 to block the new Vegetation Treatment Program (VTP) from going into effect.

Proposed by CalFire, the state’s fire management agency, the VTP will not provide protection against wind-driven fires. Yet it is wind-driven wildfires that caused the devastating loss of life and property seen in the state in recent years. The Kincade Fire of 2019, which was the largest fire in Sonoma County recorded history, burned almost 78,000 acres and destroyed almost 400 structures. Similarly, the Tubbs, Nuns and Pocket Fires of 2017 burned more than 85,000 acres in Sonoma and Napa Counties, destroyed 7,000 structures and killed 25 people.

Across the state, 87 percent of the destruction of homes in 2017 and 2018 was caused by only six fires, all of which were wind-driven. Yet the methods to be used by the VTP would not have prevented those six catastrophic fires.

The VTP calls for removal of native forests, sage scrub and chaparral on a grand scale – on the order of 250,000 acres each year – at enormous financial and ecological cost, including releasing more carbon into the atmosphere. This approach does not stand up to scientific scrutiny and in many locations would actually be counterproductive by promoting the growth of highly flammable weeds. In addition, the VTP does not properly differentiate between what might work for northern forests versus chaparral and sage scrub in Southern California; these habitat types require very different management approaches when it comes to wildfire safety.

Read more at https://www.sonomacountygazette.com/sonoma-county-news/californias-wildfire-suppression-effort-won-t-prevent-catastrophic-fires

Author SuzannePosted on Categories Sustainable LivingTags , , , ,

Recent wildfires inspire builders to make homes more fire resistant

Matt Villano, THE PRESS DEMOCRAT

On a ridge above Geyserville, one new house stands alone in the burn zone.

The home, roughly 80% finished when the Kincade fire roared through the area in late October, is perfectly intact — not a single shingle out of place. Everything around it is black and charred.

Yes, firefighters beat back flames to protect the structure. But the home also saved itself.

Tempered windows withstood extreme temperatures and did not shatter. Fire-retardant siding made with cement stopped flames from overtaking the exterior. A metal roof prevented embers from penetrating the top. On top of this, a total of 100 feet of defensible space around the house minimized the likelihood that the place would catch fire.

In short, teams from Santa Rosa general contractor HybridBuild developed the 2,000-square-foot home to withstand a major wildfire and it did.

“The fire couldn’t take the house because of the upgrades,” said Tony Negri, co-owner of the company. “You could look at what happened and say, ‘They got lucky,’ and they did, but really it was just a case of some of these extra (innovations) working the way they were supposed to work.”

The Geyserville house is a perfect example of how careful construction and an emphasis on fire resilience can put homes in a better position to withstand the onslaught of a raging fire.

Put differently, as climate change and other, naturally occurring factors wreak havoc on Sonoma County ecosystems, the anecdote offers textbook examples for the kinds of features and construction methods that homes of the future likely will need as wildfires become a more regular part of our collective reality.

“Nature (will) always be in charge,” said Tennis Wick, director of the county’s Permit and Resource Management Department. “We can no longer afford to armor our way out of risk with concrete, steel and bunkers. We need to respect nature and work with it.”

As Wick suggested, a key component to making homes more resilient is preparing for the worst.

For many developers, this means abiding by rules and regulations for building in what is known as the Wildland-Urban Interface, or WUI. (Contractors colloquially refer to this as woo-ey.)

These rules are laid out in Chapter 7A of the California Building Code. Currently, at least in Sonoma County, this means all new structures must be “built with exterior construction that will minimize the impact on life and property and help structure to resist the intrusion of flames and burning embers projected by a wildland fire and contributes to a reduction of losses.”

Contractors have responded by implementing several different tools and products to “harden” homes to fire. Negri’s company has turned to tempered glass windows, metal roofs and fiber cement siding. One particular project, a spacious new home under construction in downtown Healdsburg, features fiber cement siding.

Other firms have experimented with rammed earth construction, as well as Insulated Concrete Form (ICF) products such as Rastra blocks, which are made with foam, and Faswall blocks, which are made with wood chips and particles.

Read more at https://www.pressdemocrat.com/specialsections/rebuildnorthbay/10484149-181/rebuilding-sonoma-county-making-the

Author SuzannePosted on Categories Climate Change & Energy, Forests, Land Use, Sustainable LivingTags , , , , ,

The era of megafires: the crisis facing California and what will happen next

Daniel Swain, Crystal Kolden and John Abatzoglou, THE GUARDIAN

Three scientists explain the unprecedented danger facing the western US and call for new solutions to a growing threat from building in wildlands, fire suppression and climate change.

California is no stranger to fire. The temperate winters and reliably dry summers that make the Golden state such an attractive place to live are the same conditions that make this region among the most flammable places on Earth.

But even for a region accustomed to fire, the continuing wildfire siege has proven unprecedented. Although it is only early August, numerous very large, fast-moving, and exceptionally intense fires have already burned vast swaths of land throughout the state – consuming hundreds of thousands of acres and thousands of homes and claiming at least nine lives, including four firefighters. State and national firefighting resources are stretched to their limits; choking smoke inundated the state capital of Sacramento; and much of Yosemite national park is closed indefinitely.
Largest wildfire in California’s history expected to burn for rest of August
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California’s governor, Jerry Brown, has characterized these devastating wildfires as California’s “new normal”. But it would be a mistake to assume that the region has reached any semblance of a stable plateau. Instead, the likelihood of large, fast-moving, and dangerous wildfires will continue to increase in the coming decades – and it will combine with other demographic and ecological shifts to produce a large increase in the risk of megafires that threaten both human lives and the ecosystems we depend upon.

Immediately on the heels of California’s deadliest and most destructive fire season, just a year ago, the early ferocity of 2018 has unnerved even veteran firefighters. While the number of fires in California to date is unremarkable, the total area burned is extraordinary: five times the five-year average, in a decade that has already been characterized by fire activity well above historical levels.

The causes are complex, and people are part of the problem. In 1980, 24 million people lived in California; today there are nearly 40 million. Much of this population growth has occurred outside of the dense urban core of cities, resulting in rapid expansion of housing in suburban and semi-rural areas adjacent to wildlands.

Of the tens of thousands of homes burned by wildfires in California in recent decades, nearly all were located in this suburban-rural borderland. With housing shortages and high prices plaguing cities throughout the state, it is unsurprising that residents build on the fringes, places often replete with natural beauty. Yet residents are often unaware of the risks inherent in living there, and the need to mitigate those risks accordingly – their lives may depend upon it.

Read more at https://www.theguardian.com/environment/2018/aug/07/california-wildfires-megafires-future-climate-change

Author SuzannePosted on Categories Climate Change & Energy, Forests, HabitatsTags , , , , ,

Sonoma County Forests, Part Two: Changing woodlands

Arthur Dawson, THE PRESS DEMOCRAT

Editor’s Note: This is part two of a series about the indigenous forests that blanket Sonoma County — their past, present and threats to their future.This is the second in a series of three stories about Sonoma County forests that will be published in Sonoma Outdoors.
Part 1: The history of Sonoma County forests, January
Part 2: Where our forests stand now, February
Part 3: Our forests’ future, March
The 2017 North Coast Forest Conservation Conference, “Growing Resilience,” will take place June 7-9 at Santa Rosa Junior College’s Shone Farm, 7450 Steve Olson Lane, Forestville.
More information: Sonoma County Forest Conservation Working Group, sonomaforests.org
For the latest on the Sonoma County Vegetation map, visit sonomavegmap.org

Our forests “are undergoing a sea change,” observes Mark Tukman, founder of Tukman Geospatial, who is spearheading the Sonoma County Agricultural Preservation and Open Space District’s development of a fine-scale vegetation map.
“I’ve spent over a year looking at aerial photos and coordinating field teams. Many of our oak woodlands are disappearing rapidly, transitioning to Douglas fir and California bay,” he said.
In many places this is visible at ground level — dead manzanitas scattered beneath oaks dying in the shade of Douglas firs — a century of change visible in a glance. Of course, oaks and firs represent just a few of our native trees. Sonoma County’s wide range of geology, soils, landforms and climate has been described as “where Alaska meets Mexico.” With 10 species of oaks and 19 conifers, our forests reflect this diversity.
Close up, they can seem infinitely complex. But if you pull back, larger patterns emerge. Moving west to east, conifers grow in parallel bands — Bishop pine along the cool coast, then redwoods, and finally Douglas fir reaching warmer areas far inland. Interspersed are woodlands of oak, bay, madrone and other hardwoods. There are no hard boundaries between any of these types — in fact mixed conifer-hardwood forests are more common than either alone.
By the early 20th century, forested lands had seen severe impacts. Logged-off tracts of redwood and Douglas fir were now brushy and crowded with young trees. Oak and madrone woodlands, leveled for firewood, had become grassland. Settlements replaced oak savannahs. By all indications, there were far less trees 100 years ago than today.
Read more at: The state of Sonoma County’s forests | The Press Democrat