NOAA's Response and Restoration Blog

An inside look at the science of cleaning up and fixing the mess of marine pollution


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Historic New England Town, Once Plagued by Tack Factory’s Toxic Pollution, Enjoys Revitalized Coastal Marshes

In spring of 2013, the transformation of the polluted Atlas Tack Superfund site into vibrant coastal habitat is hard to miss. Here, you can see the new freshwater marsh with the town of Fairhaven, Mass., in the background. (NOAA)

In spring of 2013, the transformation of the polluted Atlas Tack Superfund site into vibrant coastal habitat is hard to miss. Here, you can see the new freshwater marsh with the town of Fairhaven, Mass., in the background. (NOAA)

For much of the 20th century, the Atlas Tack Corporation was the main employer in the historic coastal town of Fairhaven, Mass., a place settled in the 1650s by Plymouth colonists. But the presence of this tack factory, shuttered in 1985, left more than a history of paychecks for the area’s residents. It also left saltwater marshes so stocked with cyanide and heavy metals that the U.S. Environmental Protection Agency (EPA) listed the location of the factory as a Superfund site in 1990 and slated it for three intensive rounds of cleanup.

A Brief History of Atlas Tack

Atlas Tack Corporation became one of the nation’s largest manufacturers of wire tacks, bolts, shoe eyelets, bottle caps, and other small hardware. January 17, 1955. (Spinner Publications/All rights reserved)

Atlas Tack Corporation became one of the nation’s largest manufacturers of wire tacks, bolts, shoe eyelets, bottle caps, and other small hardware. Unfortunately, these decades of production left a toxic legacy for Fairhaven’s coastal marshes. January 17, 1955. (Spinner Publications/All rights reserved)

Henry H. Rogers, Standard Oil multimillionaire and friend of famed American author Mark Twain, formed the Atlas Tack Corporation after consolidating several tack manufacturing companies in 1895. The Fairhaven company became one of the nation’s largest manufacturers of wire tacks, bolts, shoe eyelets, bottle caps, and other small hardware.

However, decades of acids, metals, and other chemical wastes oozing through the factory floor boards and being dumped in building drains, the nearby Boys Creek marsh, and an unlined lagoon left the property contaminated with hazardous substances. Found in the soils, waters, and surrounding marsh were volatile organic compounds, cyanide, heavy metals such as arsenic, pesticides, polychlorinated biphenyls (PCBs), and polycyclic aromatic hydrocarbons (a toxic oil compound).

EPA led the Superfund cleanup (referred to as a “remedy”) of this hazardous waste site, and the Office of Response and Restoration, through NOAA’s Damage Assessment, Remediation, and Restoration Program, contributed scientific and technical guidance to the EPA during the cleanup and restoration of the site’s coastal marshes.

Determining the Remedy: Scalpel vs. Cleaver

Before restoration: A June 2007 view of the area north of the hurricane dike, following the removal of contaminated sediments. (NOAA)

Before restoration: A June 2007 view of the area north of the hurricane dike, following the removal of contaminated sediments. (NOAA)

The original cleanup goals would have required excavating the entire marsh—ripping out the whole thing, despite some areas still functioning as habitat for the area’s plants and animals. As a result, NOAA, EPA, and U.S. Army Corps of Engineers were reluctant to excavate the entire wetland. Instead, the agencies took a more targeted approach, beginning in 2001 and 2002.

First, they completed a bioavailability study to determine where natural resources were adversely exposed to contaminants from the old tack factory. This study determined which areas of the existing marsh could be preserved while removing the toxic sediment that posed a risk to human health and the environment.

The next part of the remedy was undertaken in three phases from 2006 to 2008. Phase one included demolishing several buildings, sheds, and the power plant and excavating 775 cubic yards of contaminated soil and sludge from 10 acres of the designated commercial area of the manufacturing site. Phase two excavated and disposed off-site 38,000 cubic yards of contaminated soil and debris.  With NOAA’s scientific and technical assistance—and later with help from the Army Corps—EPA, as part of phase three, excavated and later restored 5.4 acres of saltwater and freshwater marsh.

More Than a Remedy: Working Toward Revitalization

After restoration: A newly created northern salt marsh, shown in June 2013, at the site of the former Atlas Tack factory. Bare spots are filling in but a fully covered wetland landscape is likely still a few years away. (NOAA)

After restoration: A newly created northern salt marsh, shown in June 2013, at the site of the former Atlas Tack factory. Bare spots are filling in but a fully covered wetland landscape is likely still a few years away. (NOAA)

While planning to remove the contaminated wetland sediments, we recognized that the culvert running under the hurricane dike prevented the nearby Atlantic Ocean’s tide from replenishing the upstream native saltwater marsh. As a result, invasive reeds were taking over the marsh above the dike.

Reconstructing the culvert would have cost millions of dollars, so the agencies got creative. They designed a new strip of land that would divide the existing, poorly functioning saltwater marsh into a smaller, productive saltwater marsh that could be supported with the existing saltwater supply and a new freshwater wetland supported by rainfall and groundwater. The agencies also removed contaminated sediment from and then replanted a salt marsh south of the dike. Across all three marshes, more than 14,000 native marsh plants were planted, providing valuable habitat for birds and other animals.

By working together, NOAA, EPA, and Army Corps created an effective cleanup solution for the polluted factory site while enhancing the environment by returning this contaminated marsh to a functioning and sustainable habitat, a process known as ecological revitalization. Today, NOAA, along with the EPA, Army Corps, and Massachusetts Department of Environmental Protection, is helping observe and monitor the success of the restoration projects. A recent visit revealed that two of the marshes already are brimming with healthy plants and wildlife, while the salt marsh which had contaminants removed is showing considerable improvement.


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Over a Century after Texas Strikes Oil, Marsh Restoration Completed for an Old Refinery’s Pollution

This is a post by the Office of Response and Restoration’s Jessica White.

On January 10, 1910, the famous Lucas gusher, named after the persistent oil explorer who drilled the well, struck oil at Spindletop Hill in a geyser that launched more than 100 feet in the air for nine days. This kicked off the Texas oil boom and was the impetus for opening the nearby Gulf Oil Company refinery. (John Trost)

On January 10, 1910, the famous Lucas gusher, named after the persistent oil explorer who drilled the well, struck oil at Spindletop Hill in a geyser that launched more than 100 feet in the air for nine days. This kicked off the Texas oil boom and was the impetus for opening the nearby Gulf Oil Company refinery. (John Trost)

About five miles from the Texas-Louisiana border sits what was once the Gulf Oil Company’s refinery. It’s now owned by Valero, by way of Chevron. But this century-old refinery in Port Arthur, Texas, has been operating since a year after the famous discovery of oil at Spindletop in 1901, which came in the form of a more than 100-foot-high, nine-day-long oil gusher.

Spindletop is the salt dome oil field that sparked the oil boom in Texas, ushering in the exploration of oil in the region that has persisted to this day. It also paved the way for oil to become a significant energy source.

Oil Boom not Necessarily a Boon

With the oil boom came a number of hazardous substances to the former Gulf Oil refinery site and its surrounding areas. Historically, the refinery produced jet fuel, gasoline, petrochemicals, and a variety of other oil and chemical products. But this took a toll on the site’s soil, water, and aquatic habitats. Ecological risk assessment studies led by the state of Texas have revealed the presence of polycyclic aromatic hydrocarbons (PAHs, a toxic component of oil), lead, zinc, nickel, cadmium, copper, and more in the water and sediment on the site.

In 2004, NOAA, U.S. Fish and Wildlife Service, and the Texas natural resource trustees, working cooperatively with Chevron, determined that the public was owed ecological restoration for the contaminated surface water, soil, and sediments at the former Gulf Oil refinery [PDF]. Our assessment showed that we could accomplish this by constructing 83 acres of tidal wetland and 30 acres of coastal wet prairie and improving 1,332 acres of coastal wetlands via new water control structures in the Sabine Lake/Neches River basin.

A black-necked Stilt and Snowy Egrets in the restored wetland habitat. (Photo provided courtesy of Chevron.)

A black-necked Stilt and Snowy Egrets in the restored wetland habitat.
(Photo provided courtesy of Chevron.)

Based on this information, the natural resource trustees negotiated with Chevron (which assumed the legal responsibility of the former Gulf Oil site) a $4.4 million settlement of state and federal natural resource damage claims related to the site. This money would go toward implementing the environmental restoration.

The settlement included three projects meant to restore coastal habitat to compensate the public for natural resources lost or injured by historical contamination from the refinery. Two of the projects involved restoring a natural hydrology to coastal wetlands by installing water flow enhancement structures and berms. The third project aimed to create intertidal estuarine marsh and coastal wet prairie by using nearby dredge material.

These projects were a significant undertaking for Chevron and their contractors. They involved several different restoration techniques, some of which had to be modified in the middle of construction to adapt to changes in the field.

Clumps of planted marsh grass in restored estuarine marsh, looking towards Bridge City. February 1, 2013 (NOAA/ National Marine Fisheries Service/Jamie Schubert)

Clumps of planted marsh grass in restored estuarine marsh, looking towards Bridge City. February 1, 2013 (NOAA/National Marine Fisheries Service/Jamie Schubert)

Building Marsh out of Mud Pancakes

In 2002, Chevron set up a pilot project to determine the feasibility of constructing marsh habitat by placing local dredge material into open-water habitat. The resulting constructed marsh terrace was able to maintain the necessary elevation for native marsh vegetation to take root.

Based on the successful pilot, the full-scale project for building marsh planned to mix dredge material with water, forming slurry that could then be pumped into open water to form mounds and terraces. Once they reached the suitable elevation, the mounds and terraces would later be planted with native marsh grasses. On the other hand, the coastal wet prairie would be constructed by removing dredged sediment to lower the elevation and make it suitable for supporting vegetation found in that habitat type.

Established estuarine marsh in the Old River South marsh complex. Note the elevated mounds of mud beneath the marsh grass. (NOAA/ National Marine Fisheries Service/Jamie Schubert)

Established estuarine marsh in the Old River South marsh complex. Note the elevated mounds of mud beneath the marsh grass. (NOAA/National Marine Fisheries Service/Jamie Schubert)

Full-scale construction for the projects kicked off in 2007. This timeline was pushed back a few years from the pilot project because in 2005 Hurricanes Katrina and Rita increased demand for the heavy equipment used in the marsh environment and also damaged habitat and vegetation at the project site.

Another challenge came after Chevron pumped the dredged sediments into the open water to create marsh mounds. Unlike during the pilot project, when the pumped-in sediment stacked well, the sediment used in the marsh construction spread out and formed pancakes instead of the desired mounds. To prevent the sediment from spreading, the restoration team tried changing the pump’s spout, but spraying the dredge slurry into mounds was still a challenge. The mounds became mudflats.

Changing the construction technique again, they next pumped in dredged sediments and then excavated mounds and terraces. This technique had greater success, but in the end, it was still necessary to pump in additional sediment to some areas to achieve the necessary elevations. Because the team was using so much more dredge material than originally planned, they had to find an alternative sediment source from a nearby canal. If they continued taking sediment from the original source, they would have risked lowering the elevation of the area, which was adjacent to the coastal wet prairie and could affect its hydrology.

View of Rainbow Bridge from restored estuarine marsh. (NOAA/National Marine Fisheries Service/Jamie Schubert)

View of Rainbow Bridge from restored estuarine marsh. (NOAA/National Marine Fisheries Service/Jamie Schubert)

Despite a number of setbacks, the restoration projects were finished in 2009 and after a monitoring period, the trustees certified them as successfully completed in February of 2013. These projects will improve the fish and shellfish abundance in this part of southeast Texas, provide habitat for wildlife and fish, increase recreational opportunities for bird watching and fishing, and improve the habitat for waterfowl (a benefit for hunters).

The area is also highly visible for anyone driving south through the Beaumont-Port Arthur area. Just look out your window as you cross the Neches River and you’ll see the marsh mounds, coastal wet prairie, and maybe even a few Snowy Egrets on display.

Jessica White.

Jessica White.

Jessica White is a Regional Resource Coordinator with the Assessment and Restoration Division of NOAA’s Office of Response and Restoration. She has been working with NOAA in the Gulf since 2003 and recently relocated to the Gulf of Mexico Disaster Response Center. Jessica has assessed and restored Superfund sites in Texas and Louisiana and has supported oil spill and marine debris cleanup. She has a B.S. in Biology from Texas Tech University and a M.S. in Environmental Science from the University of North Texas.


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Wildlife Webcams Bring NOAA Restoration Projects Live to You

This is a post by Gabrielle Dorr, NOAA/Montrose Settlements Restoration Program Outreach Coordinator.

A photo of A-49, also known as "Princess Cruz," in her nest on Santa Cruz Island. She was the first Bald Eagle chick hatched naturally on California’s Santa Cruz Island in over 50 years. (Photo Credit: Peter Sharpe, Institute for Wildlife Studies)

A-49, also known as “Princess Cruz,” in her nest on Santa Cruz Island. She was the first Bald Eagle chick hatched naturally on California’s Santa Cruz Island in over 50 years. (Photo Credit: Peter Sharpe, Institute for Wildlife Studies)

We want you to take a bird’s eye view of restoration with our wildlife webcams.  In 2006, NOAA’s Montrose Settlements Restoration Program, established to make up for a toxic DDT and PCB legacy in southern California, installed a live webcam with a close-up view of the first Bald Eagle nest to hatch a chick naturally on California’s Santa Cruz Island in over 50 years. Thousands watched as the eagle parents tended to their chick, affectionately named “Princess Cruz” by webcam watchers. Today, there are a total of five webcams on other nests around the California Channel Islands, highlighting the success of our Bald Eagle Restoration Program.

We also wanted to connect the public to the underwater world of wetlands with an underwater fish webcam. In 2010, our program installed a live webcam in Huntington Beach wetlands, where we completed one of our fish habitat restoration projects. This underwater camera demonstrates the importance of wetlands as a fish nursery and feeding area.

Watch Bald Eagles Live

A photo of a Bald Eagle adult and chicks in the Pelican Harbor nest on Santa Cruz Island. (Photo Credit: Kevin White, Full Frame Productions)

A Bald Eagle adult and chicks in the Pelican Harbor nest on Santa Cruz Island. (Photo Credit: Kevin White, Full Frame Productions)

What is cute and cuddly and has wings?  You guessed it … a Bald Eagle chick! What is even better is that you can watch these adorable birds on live webcams that are placed near Bald Eagle nests located on Catalina and Santa Cruz Islands in the California Channel Islands right now. Viewers can watch daily as both male and female adults attend to their chicks by feeding them and keeping them warm. One of the most popular nests to watch is the West End nest on Catalina Island that has triplets for the third year in a row.

For eagle enthusiasts, there is a Channel Islands Eaglecam discussion forum where you can post or read daily nest observations, chat with other enthusiasts, or read updates from the Bald Eagle restoration team. With over 1 million hits each year, the Bald Eagle webcams have captivated audiences all over the world from January to June as these regal birds raise their young.

Diving with the Fish

If you are more interested in what lurks beneath the ocean then you should check out the live fish webcam that is broadcast from Talbert Marsh in the Huntington Beach wetlands. Since the fish webcam has been live, we have observed over 20 species of fish, diving seabirds, an octopus, nudibranchs (colorful sea slugs), and numerous other cool invertebrates.  We have also seen fish spawning events, territorial displays of fish, and even sharks.

If you want to let us know what you have seen on our webcam, you can fill out our online fish webcam observation sheet. In case our solar-powered camera is down, you can check out this 10 minute clip recorded from the webcam for a snapshot of what you might normally see. The eelgrass swaying side to side is mesmerizing and you can always catch a glimpse of a fish when you log onto the fish webcam. Test your fish identification skills now!

Gabrielle Dorr

Gabrielle Dorr.

Gabrielle Dorr is the Outreach Coordinator for the Montrose Settlements Restoration Program as part of NOAA’s Restoration Center. She lives and works in Long Beach, California where she is always interacting with the local community through outreach events, public meetings, and fishing education programs.


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The Oil Spill That Helped a South Carolina Community Transform an Abandoned Naval Golf Course Back into a Healthy Coastal Marsh

This Earth Day and every day, NOAA honors our planet by using cutting-edge science to understand Earth’s systems and keep its habitats and vital natural resources healthy and resilient. Learn more at
http://www.noaa.gov/earthday
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Pelicans and dark, oiled marsh are visible in front of the container ship M/V Everreach, which spilled oil into the Cooper River and Charleston Harbor on September 30, 2002. (NOAA)

Pelicans and dark, oiled marsh are visible in front of the container ship M/V Everreach, which spilled oil into the Cooper River and Charleston Harbor on September 30, 2002. (NOAA)

Around 100,000 residents call North Charleston, S.C., home, and since 2000, more and more people have been flocking to this urban center that balances the benefits of a lively port city with the rich history and natural beauty of a southern coastal town. Yet this isn’t by coincidence. It’s by decision and design. The City of North Charleston actively promotes a prosperous and livable community, which includes restoring green spaces and opening public access to the hard-working waterfront.

This spring, NOAA (through our Damage Assessment, Remediation, and Restoration Program) and our fellow natural resource trustees supported that vision as we restored approximately 12 acres of salt marsh (coastal wetlands) and an additional acre of upland buffer area on Noisette Creek, a tributary of the Cooper River adjacent to the city’s scenic Riverfront Park. These efforts were part of a larger restoration plan to address the environmental and recreational impacts from an accidental oil spill in 2002.

Turning an Oil Spill into an Opportunity

An aerial view of the former Navy base and the Cooper River (foreground) looking up Noisette Creek, dating to approximately 2003. The area restored back to coastal wetlands appears on the left side of the creek.  The building at the point with a red roof was the former Naval Officers Club, which has been replaced by a city park at the point. The project site starts where the Officers Club parking lot ends and extends to the first road crossing the creek. (The Noisette Company/Jim Augustin)

An aerial view of the former Navy base and the Cooper River (foreground) looking up Noisette Creek, dating to approximately 2003. The area restored back to coastal wetlands appears on the left side of the creek. The building at the point with a red roof was the former Naval Officers Club, which has been replaced by a city park at the point. The project site starts where the Officers Club parking lot ends and extends to the first road crossing the creek. (The Noisette Company/Jim Augustin)

At the end of September in 2002, as the container ship M/V Everreach pulled away from North Charleston for its next destination, approximately 12,500 gallons of oil spilled out of it and into the waters of the Cooper River and Charleston Harbor.

The oil was seen over some 30 miles of shoreline and sediments, including tidal flats, fringing marshes, intertidal oyster reefs, sandy beaches, and manmade structures (e.g., docks, piers, bulkheads). Most of the oil concentrated in the vicinity of the North Charleston Terminal on the Cooper River and old Navy base piers and docks.

This spill impacted pelicans and shorebirds, closed a shellfish bed operation, and temporarily disrupted recreational shrimp-baiting in local waters.

The state and federal agencies charged with preserving the area’s public natural resources—NOAA, U.S. Fish and Wildlife Service, South Carolina Department of Health and Environmental Control, and South Carolina Department of Natural Resources—worked cooperatively with the ship’s owner, Evergreen International, to determine the resulting environmental injury and resolve legal claims for natural resource damages.

From Marsh to Golf Course and Back Again

After carefully assessing the impacts, we the natural resource trustees worked with North Charleston’s property owners, developers, and local officials to restore a marsh-turned-naval golf course back into a functioning wetland that could support birds, fish, invertebrates, and vegetation.

As part of a restoration project after the 2002 M/V Everreach oil spill, NOAA and our partners constructed a network of tidal creeks along Noisette Creek in North Charleston, S.C. (NOAA/Restoration Center/Howard Schnabolk)

As part of a restoration project after the 2002 M/V Everreach oil spill, NOAA and our partners have just finished constructing a network of tidal creeks along Noisette Creek in North Charleston, S.C. (NOAA/Restoration Center/Howard Schnabolk)

Back in 1901, decades before North Charleston became its own city, the City of Charleston provided riverfront land to the U.S. Navy to develop a naval base. This also involved converting a marsh on the base into a golf course. The former Navy golf course along Noisette Creek in North Charleston was used until the base closed in 1996 and the property was transferred back to the City of North Charleston with a small portion owned by the Noisette Company. In 2002, the city and Noisette Company began arrangements and planning for the Noisette Preserve, a 135 acre “recreation and nature preserve at the heart of the redevelopment, located around Noisette Creek and its marshes, creeks and inlets” [Final Restoration Plan and Environmental Assessment, PDF]

A newly established inlet in the Noisette Creek Preserve, looking towards the interior of the restored marsh. (NOAA/Restoration Center/Howard Schnabolk)

A newly established inlet in the Noisette Creek Preserve, looking towards the interior of the restored marsh. (NOAA/Restoration Center/Howard Schnabolk)

To increase the tidal exchange and drainage needed to restore this area to a salt marsh, the project required removing a berm in two areas along Noisette Creek and constructing a network of tidal creeks throughout the property, which also provides access for recreational paddlers. Roads, drainage tiles, rip-rap, and other sources of debris were removed during the process as well.

As a result, the public will be able to enjoy a beautiful living shoreline which supports the surrounding area’s ecological services and ultimately benefits activities like boating, fishing, shellfish harvest, and shrimp baiting.

Supporting Green Communities

In cooperation with Evergreen International, we will monitor the wetland enhancements over the next five years to ensure the project achieves the desired ecological improvements. This project, the first of the planned restoration completed for the Noisette Creek Preserve, has created momentum and excitement for several similar projects slated for this small urban watershed. By aligning these restoration efforts with the larger goals for the City of North Charleston’s smart and sustainable growth, we and our partners have been able to build stronger, greener coastal communities and support a thriving local economy—a success for both the environment and the people of North Charleston.

Readers, how are you supporting resilient and sustainable coastal communities near you this Earth Day (and every day)?


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Texas Restoration Projects to Transform Concrete to Marsh, Undoing Bayou’s Pesticide-laden History

This is a post by the Office of Response and Restoration’s Jessica White.

One of the restoration projects making up for the history of pesticide pollution at Greens Bayou, Texas, will create 11 acres of marsh at the Baytown Nature Center. But this park has a history of its own: here is the concrete pad of a former residence and the remains of a boat house from the once-ritzy but now-abandoned Brownwood subdivision. (NOAA)

One of the restoration projects making up for the history of pesticide pollution at Greens Bayou, Texas, will create 11 acres of marsh at the Baytown Nature Center. But this park has a history of its own: here is the concrete pad of a former residence and the remains of a boat house from the once-ritzy but now-abandoned Brownwood subdivision. (NOAA)

If, like most Americans, you live in a city, then you’re probably familiar with their crowds, busy streets, and steel-and-glass skyscrapers. Wouldn’t it be nice if you could occasionally break away from the city to watch wood storks fly by, or take a leisurely stroll on a trail surrounded by live oaks and tall grasses?

For the lucky residents of Houston, Texas, they can make this happen in as little as 45 minutes at the Baytown Nature Center and Spring Creek Greenway. But these natural escapes hold a few surprising secrets. The waters and greenery of Baytown have their origins in an abandoned waterfront housing development, and their transformation from concrete to marsh, along with the preservation of Spring Creek’s wetlands, actually owe some thanks to Greens Bayou, a previously pesticide-laden industrial site just down the interstate.

The Site

In the heart of Houston's industrial area, chemical manufacturers spent years dumping untreated waste and pesticides in ditches that eventually leached into Greens Bayou. Here, you can see the mouth of the Harris County Flood Control District Ditch where it enters Greens Bayou. January 30, 2009 (U.S. Fish and Wildlife Service/Tammy Ash)

In the heart of Houston’s industrial area, chemical manufacturers spent years dumping untreated waste and pesticides in ditches that eventually leached into Greens Bayou. Here, you can see the mouth of the Harris County Flood Control District Ditch where it enters Greens Bayou. January 30, 2009 (U.S. Fish and Wildlife Service/Tammy Ash)

The Greens Bayou site, located in Houston, is 217 acres of chemical manufacturing facilities, a flood control ditch that leads into the bayou itself, and the undeveloped land that surrounds all of this. Greens Bayou is a tidally influenced area whose brackish waters run into those of the well-trafficked Houston Ship Channel.

Historically, the area’s chemical plants disposed of untreated liquid waste and wastewaters from manufacturing operations in unlined, earthen ditches, which then flowed into Greens Bayou. These ditches were the primary way pesticides were able to leach into the soil, sediment, surface water, and ground water in this environment. In particular, DDT and its by-products were found at high levels, signaling to us the potential for adverse effects for the bayou’s bottom-dwelling invertebrates, fish, and aquatic-dependent wildlife.

The Investigation

I became involved with Greens Bayou in 2004. By this time, the Texas Commission on Environmental Quality (TCEQ) had commenced the remedial investigation under the Texas Risk Reduction Program. This investigation included a detailed assessment of risk to the environment, which involved sampling and chemical analysis of sediment, soil, water, and fish tissue from Greens Bayou. The assessment’s results indicated that the natural resources found at this site were at risk of injury or loss. This prompted the natural resources trustees—NOAA, U.S. Fish and Wildlife Service, TCEQ, and the Texas Parks and Wildlife Department—to initiate a Natural Resource Damage Assessment (NRDA) in 2005. This meant we were performing our own assessment, which used information from the remedial investigation to quantify the harm done to the habitats, fish, birds, and wildlife there. As a result, our assessment continued on a parallel track to the remedial investigation. This collaboration helped us work more efficiently as we collected and analyzed data.

At the conclusion of the damage assessment, the trustees determined that this chemical facility site required ecological restoration to offset the past injuries to the forested wetlands and submerged mud bottom habitats. The next step in the NRDA process was to identify suitable restoration projects which would benefit the natural resources that depended on the injured habitats. Restoration is defined as the rehabilitation, replacement, or acquisition of the equivalent natural resources that were lost or injured. In this case, we trustees selected both the route of restoration and acquisition to compensate the public for the loss of these natural resources. (The final damage assessment and restoration plan is available online. [PDF])

The Restoration

The restoration project we chose for the submerged mud bottom habitat is the creation of nearly 11 acres of estuarine marsh at the Baytown Nature Center located in Baytown, Texas. To accomplish this, the existing shoreline and adjacent area will be re-contoured to a lower elevation. Further lowering the elevation of the shoreline will allow more water to infiltrate the land and support the addition of marsh plants. However, this also involves breaking up the concrete sidewalks and foundations remaining from the area’s past life as an upscale residential neighborhood known as Brownwood.

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In the 1940s and 50s, Brownwood became home to impressive two-story residences and their boathouses, framed by palm trees and the San Jacinto River. The death of this booming subdivision came slowly, delivered by local industry’s massive extraction of water beneath Brownwood, which caused the land to subside significantly. More than two decades of hurricanes and storm surges began flooding residents out of their sinking homes, and after Hurricane Alicia devastated the area in 1983, the city of Baytown worked with the Federal Emergency Management Agency (FEMA) to buy out the last of Brownwood’s homeowners. Baytown then agreed to transform the abandoned neighborhood into a public park and nature center. One of the few surviving signs of Brownwood will be a swimming pool the trustees have decided to leave amid the re-created saltmarsh.

Across town, on the north side of Houston, we will replace Greens Bayou’s lost forested wetland habitat with 100 acres of similar habitat, located in the Spring Creek Greenway. The acreage has already been acquired and placed under a conservation easement. This easement will protect the property, already surrounded by subdivisions, from development. It will also ensure the land is available for the public to enjoy through a number of activities such as nature hiking, biking, and bird-watching.

Settlement of the Natural Resource Damage Assessment for the Greens Bayou case includes reimbursement for the trustee assessment and restoration oversight costs as well as the cost to implement the restoration projects (estimated at approximately $375,000 for the Baytown Nature Center project and $417,000 for the Spring Creek project). Both the Baytown Nature Center and Spring Creek Greenway are places where people can enjoy nature in the highly developed Houston area. By partnering with these existing initiatives, we trustees were able to ensure the restoration projects would build on the local momentum to protect and appreciate the natural environment while reversing the ecological damage done at Greens Bayou.

Jessica White.

While you can see here the kind of wildlife Jessica is comfortable around, she is fully dedicated to protecting the environment.

Jessica White is a Regional Resource Coordinator with the Assessment and Restoration Division of NOAA’s Office of Response and Restoration. She has been working with NOAA in the Gulf since 2003 and recently relocated to the Gulf of Mexico Disaster Response Center. Jessica has assessed and restored Superfund sites in Texas and Louisiana and has supported oil spill and marine debris cleanup. She has a B.S. in Biology from Texas Tech University and a M.S. in Environmental Science from the University of North Texas.


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After Remaking the Way for Fish, Huge Increases Follow for Migrating Herring in a Massachusetts River

The Sawmill Dam before NOAA helped install "fishways," which allow fish to pass more easily over the dam, on the Acushnet River in Massachusetts. (NOAA/Steve Block)

The Sawmill Dam before NOAA helped install “fishways,” which allow fish to pass more easily over dams, on the Acushnet River in Massachusetts. (NOAA/Steve Block)

A version of this story first appeared on the NOAA Restoration Center website on April 8, 2013.

In 2007, as part of a habitat restoration project, NOAA helped to install stone “fishways” at two dams on the Acushnet River in Massachusetts. These fishways, designed to more closely resemble conditions found in nature, are located in the river channel and allow migrating fish to gradually gain enough elevation to successfully pass over the dams.

After 2007, when NOAA helped improve fish passage over two dams on the Acushnet River in Massachusetts, herring numbers passing through the river increased dramatically. Here, you can see the completed fishway on the Sawmill Dam.  (NOAA/Steve Block)

After 2007, when NOAA helped improve fish passage over two dams on the Acushnet River in Massachusetts, herring numbers passing through the river increased dramatically. Here, you can see the completed fishway on the Sawmill Dam. (NOAA/Steve Block)

Since construction, there has been an astounding 1,140% increase in migrating herring able to pass over the dams and access prime spawning grounds, according to data collected by the Massachusetts Division of Marine Fisheries [PDF].

Migrating fish, including river herring and American eels, now have much better access to habitat all along the Acushnet River, which runs 8.5 miles from the spawning areas of the New Bedford Reservoir into New Bedford Harbor and empties into Buzzards Bay. This means more opportunities for herring to grow, thrive, and spawn.

Herring are caught commercially and are also important prey fish for other commercial and recreational fish species, such as cod. But, due to very low numbers, there is currently a moratorium on the take of river herring from Massachusetts waters.

Between the 1940s and the 1970s, electrical parts manufacturers discharged wastes containing polychlorinated biphenyls (PCBs) and toxic metals into New Bedford Harbor, resulting in high levels of contamination. NOAA, through the Damage Assessment Remediation and Restoration Program (DARRP), worked with the Commonwealth of Massachusetts and the Department of Interior to fund the design and construction of these fishways. They are part of a restoration plan developed in response to decades of industrial pollution in New Bedford Harbor, a major commercial fishing port and industrial center in southeastern Massachusetts. According to NOAA, part of this site held the “highest concentrations of PCBs ever documented in a marine environment.”

So far, 34 projects—including these fishways—have been completed to restore natural resources that were injured or lost due to the contamination. Read more on the case and get the latest updates on restoration.

This spring, scientists are hoping to see even bigger runs of herring on the Acushnet. Want to see them in person? The third and fourth weeks of April should be peak migration time for these fish—check out this viewing guide for more information.


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Blizzards, Bombs, and Electrofishing: Assessing an Oiled Creek on Alaska’s Remote Aleutian Islands

This is a post by Ian Zelo, NOAA Oil Spill Coordinator for the Office of Response and Restoration.

In the wake of the 2010 oil spill on Adak Island, a field team member from the Alaska Department of Fish and Game breaks the ice to prepare a stream for sampling.

In the wake of the 2010 oil spill on Adak Island, a field team member from the Alaska Department of Fish and Game breaks the ice to prepare a stream for sampling, in this case, for electrofishing. Field teams also were setting small fish traps, which do not require breaking up the ice like this. (NOAA)

In the center of Alaska’s rugged Aleutian Islands is the sparsely populated Adak Island. It was here—in the middle of winter on January 11, 2010—that workers at the Adak Petroleum Bulk Fuel facility were filling an underground tank with oil from the supply tanker Al Amerat. But as the tanker sat moored at the dock, its oil began overfilling the 4.8 million gallon underground tank. Up to 142,800 gallons of #2 diesel flowed out of the tank and eventually into the nearby salmon stream, Helmet Creek.

January 12, 2010 -- Looking out on spilled oil and containment boom from the Adak Small Boat Harbor into Sweeper Cove and the fuel pier. (U.S. Fish and Wildlife Service/Lisa Stitler)

January 12, 2010 — Looking out on spilled oil and containment boom from the Adak Small Boat Harbor into Sweeper Cove and the fuel pier. (U.S. Fish and Wildlife Service/Lisa Stitler)

Just over a mile after the creek passes the oil storage facility, it enters the Adak Small Boat Harbor, which is open to Sweeper Cove’s marine waters. Helmet Creek is equipped with gates that can partially close off the flow of the stream. That feature played to the response’s favor because spill response personnel were able to use these gates, along with boom and absorbent materials, to contain most of the oil spill in the stream.

Only a small percentage of the oil reached the boat harbor and Sweeper Cove. However, Alaska, NOAA, and the U.S. Fish and Wildlife Service, as natural resource trustees, were concerned about injury to both the stream and marine habitats and began a Natural Resource Damage Assessment (NRDA) to investigate potential environmental impacts.

Mission: Nearly Impossible

I got involved the next day, January 12, leading the NOAA team for this injury assessment. While the trustees were coordinating closely with the response, it was clear that we would need to send environmental assessment teams to the island to document the spill and its impacts on local habitats. However, there are only two flights to Adak each week. We knew the next flight to the island was on January 14 and we needed to be on it. This meant we had only two days to plan our initial assessment, recruit a field team to take samples, assemble the equipment, and finalize a field sampling protocol.

My role was to coordinate partners and tasks across two federal and four state agencies. On such a short time frame, we could not afford to work using the logical path we usually take: plan, recruit, gear up, and go. We had to scramble and do it all at once.

On the evening of January 13, our assembled field staff had flown to Anchorage, Alaska, with their field gear and were staged there for the 2:00 p.m. flight the next day. A local laboratory would assemble our sampling equipment and have it ready to pick up the following morning. We had a draft sampling protocol that would be finalized while the team was flying so they could be briefed on the details of their mission when they arrived. Things looked good.

At 6:30 a.m. on January 14, I got a call from one of our field staff. She had a personal emergency and had to pull out of the mission. Suddenly, things did not look good. To work safely and to accomplish our sampling goals, we needed four people on the team. I now had 8 hours to find another qualified person or we had to cancel. Working with our state partners, I identified and spoke to an Anchorage-based consulting firm by 8:30 a.m. We identified a potential replacement and called him on his drive into the office. By 9:00 he was on his way back home to get ready. With a little over an hour before the flight took off, we were able to get a contract in place to hire the consulting firm and buy his plane ticket. Once again, the mission was a go.

A member of the environmental assessment mission on Adak Island is holding the electrified wand and wearing the power pack for sampling fish via the electrofishing method.

A member of the environmental assessment mission on Adak Island is holding the electrified wand and wearing the power pack for sampling fish via the electrofishing method. (NOAA)

Over the next five weeks, we sent three field teams to Adak to assess injury caused by the oil spill. I was on the second mission. During the assessment we fished both Helmet Creek and similar streams (for comparison) to document the fish communities. One of the methods we used is known as “electrofishing.” A common research technique, it involves sticking an electrified wand in the water to temporarily shock and disable nearby fish and allow us to catch them. We counted and collected fish for contaminant and developmental analysis. Mussels were collected from sites in and around Sweeper Cover and Finger Bay (a nearby bay farther than we thought the oil might travel, again, for comparison). Trustees also collected dozens of water and sediment samples and surveyed birds.

During this assessment, we had to deal with a few unusual challenges. We had to operate at night in order to work at low tide. We were excluded from Helmet Creek for half of the second assessment because the responders discovered unexploded ordnance (potentially explosive weapons), which had to be removed before we could continue. We worked in streams that were partially or fully covered in ice, and on the final mission our assessment was interrupted by a blizzard. Our teams had to recover fish traps from under several feet of snow.

Ready for Restoration

In the summer of 2011, the trustees worked cooperatively with Adak Petroleum Bulk Fuel facility, the responsible party, on scoping restoration options. NOAA and the other trustee partners are now nearing a cooperative settlement with the fuel facility. We’ve reviewed possible restoration projects that could compensate the public for the injuries caused by the spill and have drafted a Damage Assessment and Restoration Plan [PDF] that is available for public comment.

January 12, 2010 -- A view of spilled oil next to a culvert in Helmet Creek, with the tanker that supplied the fuel in the background. Proposed restoration projects will benefit both salmon and the entire stream ecosystem. (U.S. Fish and Wildlife Service/Lisa Stitler)

January 12, 2010 — A view of spilled oil next to a culvert in Helmet Creek, with the tanker that supplied the fuel in the background. Proposed restoration projects will benefit both salmon and the entire stream ecosystem. (U.S. Fish and Wildlife Service/Lisa Stitler)

In the plan, we present our preferred restoration alternative, which includes a suite of projects to improve the overall quality of Helmet Creek. Restoration is targeted at pink salmon but also will benefit the entire stream corridor. The proposed work includes restoring access to the creek for fish, removing barrels and other debris, and increasing water flow by plugging a culvert system that is drawing water from the stream. Our goal is to perform this restoration in the summer of 2013.

You can comment on the restoration plan until April 30, 2013. Send comments to me at:

Ian Zelo
NOAA Oil Spill Coordinator
Assessment and Restoration Division
7600 Sand Point Way NE
Seattle, WA  98115
Phone:  206.526.4599

Email: ian.j.zelo@noaa.gov

Please provide a subject line, indicating that your comments relate to restoration planning for the Adak 2010 oil spill. Any comments received will become part of the administrative record. Please be aware that your entire comment—including your personal identifying information—may be made publicly available.

Ian Zelo

Ian Zelo

Ian Zelo is an oil spill and injury assessment specialist for NOAA’s Office of Response and Restoration. He has performed both response and damage assessment roles on spills across the country. His first case in Alaska was the Selendang Ayu grounding on Unalaska Island in 2004.


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What Do Hanford’s Latest Nuclear Waste Leaks Mean for Environmental Restoration?

This is a post by Vicki Loe and Charlene Andrade.

Some of the older nuclear waste storage tanks at Hanford in southeast Washington.

Some of the older nuclear waste storage tanks at Hanford in southeast Washington. (U.S. Department of Energy)

This past February, the U.S. Department of Energy confirmed that six additional nuclear waste storage tanks are leaking at the Hanford Nuclear Reservation in southeast Washington. This revelation has drawn attention once again to the ongoing challenges of assessing, cleaning up, and restoring the environment around a massive nuclear waste site.

To understand how these six aging nuclear waste tanks might affect salmon, the sagebrush-filled desert ecosystem, and nearby Columbia River, it helps to understand more about Hanford’s history. In 1943, the Hanford Site was developed by the U.S. Government for the production of plutonium as part of the Manhattan Project that developed atomic bombs during World War II. The site continued to produce plutonium as well as nuclear energy until the last reactor stopped operating in 1987. The weapons production and nuclear energy operations at Hanford left dangerous and environmentally harmful solid and liquid waste, creating one of the largest and most complex cleanup projects in the U.S. That effort has been in progress since 1989.

Hanford’s 177 total storage tanks, some of which date from the 1940s, hold more than 50 million gallons of radioactive waste. These six leaking tanks are among 149 older “single-shell” tanks, which only have one liner. (Tanks constructed more recently feature “double-shells.”) However, these older tanks were designed for a lifespan of only about 20 years. According to Washington Governor Jay Inslee, “This certainly raises serious questions about the integrity of all 149 single-shell tanks with radioactive liquid and sludge at Hanford.”

One of the older waste storage tanks under construction at the Hanford Nuclear Reservation.

One of the older waste storage tanks under construction at the Hanford Nuclear Reservation. (U.S. Department of Energy)

While tanks at the site have leaked in the past, news of these recently discovered leaks again raises concerns about the condition of the tanks and underscores the ongoing complexities of this assessment and cleanup.

The six leaking tanks pose no immediate threat to natural resources because they are located 200–300 feet above the groundwater table. The State of Washington indicates that there is no immediate or near-term health risk as the leaking tanks are located more than five miles from the Columbia River. In addition, measures are being taken to prevent contamination currently in the soil from entering the river.

While this latest discovery affects the ongoing cleanup, it does not change the focus of the Hanford Natural Resource Damage Assessment because the Hanford Natural Resource Trustee Council is already evaluating harm from contamination flowing into the Columbia River, which borders the site and is home to Chinook salmon and sturgeon. The council includes representatives from NOAA, three tribal organizations, the States of Washington and Oregon, and two other federal agencies. It is tasked with characterizing the cumulative impacts from decades of releases and contamination to the fish, wildlife, and the habitats they rely upon, and determining the cumulative restoration needed to replace, restore, and offset the total decades of damage.

Discovery of the additional leaking tanks illustrates the challenge of that task: to be able to measure the harm over time, even as new sources of contamination are discovered and await cleanup. Each source  can add to the cumulative impact and ultimately to the amount of restoration that will eventually be needed to offset damages.

For more information about the work of the Hanford Natural Resource Trustee Council, view the Hanford Natural Resource Damage Assessment Injury Assessment Plan, which describes how the council will characterize and quantify the past, ongoing, and future environmental impacts.


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Alcoa Aluminum Factories Settle $19.4 Million for Pollution of St. Lawrence River Watershed, Most Will Fund Restoration of Tribal Culture, Recreational Fishing, and Habitat

For decades, two Alcoa alumininum facilities discharged toxic PCBs into the St. Lawrence River, its tributaries the Grasse and Raquette Rivers, and the surrounding area in Massena, N.Y. Alcoa and Reynolds are paying $19.4 million to settle the resulting damages to natural resources. (NOAA)

For decades, two Alcoa alumininum facilities discharged toxic PCBs into the St. Lawrence River, its tributaries the Grasse and Raquette Rivers, and the surrounding area in Massena, N.Y. Alcoa and Reynolds are paying $19.4 million to settle the resulting damages to natural resources. (NOAA)

In the northern reaches of upstate New York, just across and upriver from Canada, two factories chug along. Both now owned by aluminum manufacturer Alcoa, these factories have been producing aluminum on the banks of the Grasse and St. Lawrence Rivers since 1903 and 1958. And like many other industries in the past, these two Alcoa plants in Massena, N.Y., discharged a stream of toxic pollutants into the water, air, and soil around them.

Now, only a few miles away, dozens of young Mohawk children at the Akwesasne Freedom School attempt to reclaim their Mohawk heritage and a connection with the natural world and traditional practices endangered in part by the area’s contaminated history.

Today, the majority of the $19.4 million settlement with Alcoa and the former Reynolds Metals Company will go toward healing past wounds to this rich ecological and cultural environment with a suite of proposed restoration projects.

A History of Pollution on the St. Lawrence

Starting in the late 1950s, Alcoa and Reynolds used polychlorinated biphenyls (PCBs) in hydraulic fluid and electrical equipment as they produced aluminum at these two factories. Nearby, General Motors Central Foundry (GM) also used PCBs in the hydraulic fluids when building automotive engines and in electric equipment. The PCBs from these three facilities in turn made their way into the St. Lawrence River, its tributaries the Grasse and Raquette Rivers, and the surrounding area.

Banned in 1979, PCBs are a group of persistent and highly toxic compounds which, in addition to causing cancer in animals, affects growth, behavior, reproduction, immune response, and neurological development. Manufacturing activities at these three factories released a slew of other industrial pollutants [PDF] that impacted the environment, including aluminum, fluoride, cyanide, and polycyclic aromatic hydrocarbons (PAHs, a hazardous component of oil, coal, and tar).

In 2000, Alcoa purchased Reynolds and as a result, Reynolds’ facility is now known as Alcoa East. Its sister facility, Alcoa West, is the longest continually operating aluminum facility in the world. The third, now-shuttered, General Motors factory sits next door to Alcoa East and has already paid approximately $1.8 million for environmental restoration in separate bankruptcy proceedings. Combined with $18.5 million from Alcoa’s settlement, the Alcoa and GM settlements will provide approximately $20.3 million for specific projects to restore access to recreational fishing, fish and wildlife, and Mohawk traditional practices and language.

Moving Toward Environmental Restoration

The St. Lawrence Environmental Trustee Council, a group of federal, state, and tribal governments which includes NOAA, has coordinated with the companies to assess the damages to ecological resources, recreational fishing, and the St. Regis Mohawk Tribe’s cultural resources. Due to the history of industrial pollution released from these factories into the St. Lawrence River watershed, the sediments, fish, birds, mammals, reptiles, and amphibians along the St. Lawrence, Grasse, and Raquette Rivers have all suffered. Under the U.S. Environmental Protection Agency and the New York State Department of Environmental Conservation, various cleanup activities, such as dredging and capping contaminated river sediments, have been attempting to remediate the polluted environment.

Improvements to spawning habitat and stocking of lake sturgeon is one of the restoration projects preferred by the natural resource trustees. (Saint Regis Mohawk Tribe)

Improvements to spawning habitat and stocking of lake sturgeon is one of the restoration projects preferred by the natural resource trustees. (Saint Regis Mohawk Tribe)

As part of a process that moves beyond cleanup, the trustees, led by the St. Regis Mohawk Tribe, have identified preferred recreational fishing, ecological, and cultural restoration projects to compensate the public for the resulting environmental injuries.

For example, contaminants from the three facilities degraded adult and juvenile fish habitat for species such as the American eel (currently being considered for Endangered Species Act protection) and the state-threatened lake sturgeon. The presence of toxic PCBs triggered fish consumption advisories for the St. Lawrence, Grasse, Raquette, and St. Regis Rivers. In place since 1984, these advisories have resulted in an estimated 221,000–250,000 fewer fishing trips on these rivers, both in the past and into the future. In response, four new boat launches will be constructed and one existing launch will be upgraded to provide shoreline and in-river fishing access points.

The trustees also will protect and restore wetland and upland habitat, enhance stream banks, improve impeded fish and other wildlife passage through the rivers, enhance fish stocks and spawning habitat, and restore bird habitat. The preferred restoration projects are described in the St. Lawrence River Environment Restoration Compensation and Determination Plan [PDF]. The public can comment on this plan and on the Alcoa $19.4 million natural resource damage settlement, which includes $18.5 million for restoration and nearly $1 million in reimbursement for past environmental assessment costs.

Reconnecting to the Natural World

One of the most creative examples of the preferred restoration projects centers not on restoring natural resources such as sturgeon, a species important to the St. Regis Mohawk Tribe, but on restoring the unique culture of the Mohawks, which is tied closely to the natural world.

A tribal apprenticeship program will work to restore traditional Mohawk cultural practices, including basketmaking. (Akwesasne Museum and Cultural Center)

A tribal apprenticeship program will work to restore traditional Mohawk cultural practices, including basketmaking. (Akwesasne Museum and Cultural Center)

Grassy meadows on both sides of the Lower Grasse River were set aside for the Mohawks of Akewsasne by the Seven Nations of Canada Treaty of 1796. The name Akwesasne means “the land where the partridge drums,” a reference to the sound created by the rapids of the St. Lawrence River prior to the construction of dams.

The people of Akwesasne were directly impacted by the contamination from the Alcoa, Reynolds, and GM factories. An innovative tribal apprenticeship program will seek to restore traditional Mohawk cultural practices that have been lost or impaired since contamination limited use of the uplands, the rivers, and their natural resources. The tribe, as a trustee, has targeted four traditional areas for apprentices to receive hands-on training from experienced masters:

  • Water, fishing, and use of the river.
  • Horticulture and basketmaking.
  • Medicinal plants and healing.
  • Hunting and trapping.

The apprenticeship program will provide experience in directly harvesting, preparing, preserving, and producing traditional Mohawk cultural products while promoting Mohawk language in each aspect of the training.

Restoration funding also will support existing institutions and programs focused on recovering cultural practices and language injured by contaminants from these manufacturing sites.

For more information and instructions on how to comment on the preferred restoration projects and the settlement, visit the NOAA Damage Assessment, Remediation, and Restoration Program website.


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For Submerged Oil Pollution in Western Gulf of Mexico, Restoration Is Coming After 2005 DBL 152 Oil Spill

By Sandra Arismendez, Regional Resource Coordinator for the Office of Response and Restoration’s Assessment and Restoration Division.

Imagine trying to describe the state of 45,000 acres of habitat on the ocean bottom—an area the size of over 34,000 football fields. And you have to do it without four of your five senses. You can’t touch it. You can’t taste it. You can’t smell it. You can’t hear it. Sometimes you can barely see a few inches in front of your scuba mask as you swim 60 feet below the surface in the murky waters of the Gulf of Mexico. But that was the task NOAA scientists faced seven years ago in the wake of a large offshore oil spill in the western Gulf of Mexico.

The DBL 152, shown here on November 13, 2005 shortly before capsizing, ended up discharging nearly 2 million gallons of a thick slurry oil, which sank to the floor of the Gulf of Mexico. (ENTRIX)

The DBL 152, shown here on November 13, 2005 shortly before capsizing, ended up discharging nearly 2 million gallons of a thick slurry oil, which sank to the floor of the Gulf of Mexico. (ENTRIX)

An Oily-Fated Journey

The oil was released from tank barge (T/B) DBL 152 as it was traveling from Houston, Texas, to Tampa, Fla., in November 2005.  While in transit, the barge struck the submerged remains of a pipeline service platform that collapsed a few months earlier during Hurricane Rita. The double-hulled barge was carrying approximately 5 million gallons of slurry oil, a type of oil denser than seawater, which meant as the thick oil poured out of the barge, it sank to the seafloor.

Heavy chains dragged absorbent material along the seafloor in the Gulf of Mexico in order to detect submerged oil. (ENTRIX, 11/19/2005)

Heavy chains dragged absorbent material along the seafloor in the Gulf of Mexico in order to detect submerged oil. (ENTRIX, 11/19/2005)

Eventually, the barge’s tug was able to tow it toward shore, hoping to ground and stabilize it in shallower waters. However, the barge grounded unexpectedly 30 miles from shore, releasing more oil and eventually capsizing. Approximately 1.9 million gallons of oil drained into the open waters of the Gulf of Mexico. To find, track, and clean up the oil in these cloudy waters, oil spill responders used information from divers, remotely operated vehicles (ROVs), and oil trajectory models. Executing this process over such a large area of the seafloor took more than a year. While divers were able to recover an estimated 98,910 gallons of oil, some 1.8 million gallons more remained unrecovered.

NOAA’s Damage Assessment, Remediation, and Restoration Program (DARRP) provides the unique scientific and technical expertise to assess and restore natural resources injured by oil spills like the DBL 152 incident as well as releases of hazardous substances and vessel groundings.  For more than 20 years, DARRP has worked cooperatively with other federal, tribal, and state co-trustees and responsible parties to assess the injuries and reverse the effects of contamination to our marine resources, including fish, marine mammals, wetlands, reefs, and other ocean and coastal habitats.

Oil Spill Sentinels in the Open Sea

So what happened to the other 1.8 million gallons of oil which were not feasible to clean up? Initially, the oil sank to the ocean bottom, creating a “footprint” of the impacted area.

Crab pot sentinels used to detect submerged oil on the seafloor in the Gulf of Mexico. (ENTRIX, Dec. 3, 2005)

Crab pot sentinels used to detect submerged oil on the seafloor in the Gulf of Mexico. (ENTRIX, Dec. 3, 2005)

Immediately following the spill, NOAA, the U.S. Coast Guard, Texas state trustees, and the responsible party worked together to assess impacts to natural resources and habitats affected by the spill. Scientists collected and analyzed oil samples, bottom-dwelling animals living in the sediments, and samples of sediments and water taken in the oiled areas. In particular, creatures on the seafloor were at risk of being smothered or contaminated by the dense oil as it sank to the bottom.

As you might expect, assessing injuries to an area of the open ocean covering 34,000 football fields is no easy task, especially considering how difficult it is to detect the oily culprit itself. Because we couldn’t always see the submerged oil over such a large area, oil-absorbing pads were dragged systematically across miles of ocean to locate patches of oil. Underwater sorbent “sentinels,” oil-absorbing tools used to detect oil, also were placed and monitored strategically in the predicted path of the spilled oil to tell us if the footprint of the remaining oil at the ocean bottom was relatively stationary, and if not, in what general direction it was moving. Monitoring revealed the oiled area was moving and dissipating over time as it weathered due to exposure to physical forces such as currents.

The environmental assessment showed that fish and organisms living on or near the ocean floor (such as worms, clams, and crabs) were injured by the oil that sank to the bottom of the Gulf of Mexico. That submerged oil impacted approximately 45,000 acres of ocean floor. However, much of this area recovered over time as the oil naturally dissipated and weathering broke it up.

A Path Forward

Submerged oil from Tank Barge DBL 152 on the seafloor in the Gulf of Mexico. (EXTRIX, December 2005)

Submerged oil from Tank Barge DBL 152 on the seafloor in the Gulf of Mexico. (EXTRIX, December 2005)

In March 2013, NOAA released the Damage Assessment and Restoration Plan [PDF] for the DBL 152 incident, which demonstrates that restoration is possible for this oil spill. The plan outlines injuries to natural resources and proposes a restoration project to implement estuarine shoreline protection and salt marsh creation at the Texas Chenier Plain National Wildlife Refuge Complex in Galveston Bay, Texas. The preferred shoreline protection and marsh restoration project proposed in the draft plan is designed to replenish the natural resources lost due to the oiling during the period both when they were injured and while they recovered.

Public comments can be submitted through April 15, 2013 by mailing written comments to: 

NOAA, Office of General Counsel, Natural Resources Section
Attn: Chris Plaisted
501 W. Ocean Blvd., Suite 4470
Long Beach, CA 90802

Or submitting comments electronically at www.regulations.gov (Docket I.D.:  NOAA-NMFS-2013-0034).

Following the close of the public comment period, NOAA will consider any comments and release a Final Restoration Plan. This comment period is the last step before restoration projects are selected and funding is sought from the Oil Spill Liability Trust Fund for implementation.

Since the party responsible for the oil spill reached its legal limit of liability and is not obligated to pay further liabilities by law, NOAA will submit a claim to the National Pollution Funds Center (NPFC), administered by the U.S. Coast Guard, to cover the cost of enacting the needed environmental restoration. The Pollution Funds Center serves as a safety net to help cover the costs of reclaiming our nation’s invaluable natural resources following these types of events.

Sandra Arismendez

Sandra Arismendez

Sandra Arismendez is a coastal ecologist and Regional Resource Coordinator for the Gulf of Mexico in the Assessment and Restoration Division of NOAA’s Office of Response and Restoration.

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