More oil pollution in southeast Asia: suspected bilge dumping off Indonesia and The Philippines

[This analysis of oil pollution in the waters of southeast Asia was written as part of a collaborative effort between SkyTruth team members Lucy Meyer and Brendan Jarrell.]

Our routine monitoring of the world’s oceans has led to some extraordinary findings. For example, in previous updates, we’ve identified oil slicks in traffic-heavy locations like the Strait of Malacca. But as you’ll see in this post, bilge dumps occur elsewhere in southeast Asia. 

Those who follow our posts are probably familiar with how we identify vessels at sea. To new readers, let us explain what bilge dumping is and how we identify potentially responsible vessels. Bilge dumping is the disposal of waste water from a ship’s lower hull. Bilge water is supposed to be treated before it’s discharged, but sometimes vessel operators will bypass the pollution control equipment and flush oily, untreated bilge into the ocean – in direct violation of marine pollution law. We use images from satellites to monitor for illegal bilge dumping. In satellite imagery, oily bilge dumps usually form distinctive linear slicks. By matching the time of the imagery to broadcasts from a vessel tracking service called automatic identification system (AIS), we can determine the identity of vessels that appear to be causing the slicks. We used this process to identify the vessel associated with a long bilge slick in Figure 1 below.

 

Figure 1: A vessel shown passing through the Sunda Strait, identified as the Sungai Gerong, apparently trailing a long oily bilge slick.

 

This Sentinel-1 radar satellite image from July 2nd shows a slick about 177 kilometers long around the southwest tip of Banten Province, Island of Java, Indonesia (Figure 1). In the yellow box, you can see a vessel at the head of the slick. By investigating AIS broadcasts from exactEarth’s ShipView service, we identified an Indonesian oil products tanker named the Sungai Gerong as the likely vessel. The satellite scene, captured at 22:33 UTC (Coordinated Universal Time), shows a slick that closely aligns to the AIS broadcasts from the Sungai Gerong.

You’ll probably notice that the tail-end of the slick is a bit contorted and offset from the track of the Sungai Gerong. The slick’s appearance was likely influenced by ocean currents and local weather conditions between the time of the ship’s passing and when the image was taken. Global wind maps show that there were 10-15 knot winds blowing northwest up to six hours before the image was acquired. This data suggests that wind likely impacted the slick’s appearance. As a result, we believe that the Sungai Gerong is the likely source of this slick.

Using AIS, we tracked the Sungai Gerong as it traveled north through the Sunda Strait — the body of water between the Indonesian islands of Java and Sumatra — to the port of Jakarta. Similar to the Strait of Malacca, the Sunda is an important waterway that connects the Indian Ocean to the Java Sea. Though not as dense with marine traffic as the Malacca Strait, the Sunda is still subjected to pollution from vessels. 

We also recently identified two suspected bilge dumps in the Philippines (Figure 2). Occurring on July 6th in the South China Sea, a 238 kilometer long slick behind the vessel in this Sentinel-1 radar image looks like a bilge dump. The Philippine island of Palawan, a popular tourist destination for its beautiful natural landscape, appears on the right side of the map frame. Another smaller slick without a known source is visible to the left of the larger slick.

 

Figure 2: The Ulaya makes its way through the South China Sea. Palawan Island, a part of the Philippines, can be seen to the right.

 

Using AIS broadcasts from ShipView, we identified the Ulaya, a Thai oil tanker, as a possible source of the slick. The last AIS broadcast from the Ulaya (seen directly above the ship) was transmitted fifteen minutes before the image was captured. These AIS broadcasts give us reason to believe that the Ulaya could be responsible for this slick. Moreover, ShipView shows that the vessel was headed towards the Port of Belawan in the Strait of Malacca with a shipment of  Dangerous Goods. According to the International Maritime Organization, a United Nations agency that regulates global shipping, chemicals falling under this classification are “hazardous to marine environments.” Thus, a slick from this ship could be of greater concern than usual.

These examples show that bilge dumping continues to be a problem in the waters of southeast Asia. But with satellite imagery, anyone, anywhere can see what’s happening on the water and help to raise the alarm. We hope that our persistent and careful surveillance will inspire others to pressure policy makers, government regulators, and the shipping industry to take strong, coordinated action to stop bilge dumping.

“Well Kick” Causes Spill in Java Sea

Following up on recent reports of oil in the water off the north coast of Karawang Regency, West Java, Indonesia, SkyTruth has picked up a slick in Sentinel-1 radar imagery. In the image from July 18th, an unidentified platform (circled in red) located roughly 12 km north of the Karawang shore is shown emitting a 34.7 km-long slick into the Java Sea. A story written by the local Jakarta Post on July 18th describes state-owned energy firm Pertamina’s decision to evacuate personnel and halt operations at an offshore production rig in their Offshore Northwest Java (ONWJ) block. The evacuation was ordered after a dangerous “well kick”, or unplanned release of gas caused by low pressure in a wellbore, initiated a large slick on the 16th of July. A separate report released by the Jakarta Post five days later indicated that the Indonesian Transportation Ministry teamed up with Pertamina in response to the oil-related event, along with several other smaller entities in the area. The response vessels were able to set up a boom around the perimeter of the offshore platform. Unfortunately, this didn’t stop oil from reaching villages and beaches on West Java’s coast. Given the fact that several vessels surround the unidentified object in the Sentinel-1 image, we believe that this could be the affected drilling platform. Pertamina’s upstream director Dharmawan Samsu estimated that it will take approximately eight weeks for the oil and gas leakage to be plugged.

The unidentified platform (circled in red) can be seen leaking oil into the Java Sea. Several small vessels are in the platform’s proximity.

Visualizing the Expansion of Fracking in Pennsylvania: Part 3

If you have been following the first two posts in this series, you have been introduced to Pennsylvania’s hottest commodity: natural gas. The state has experienced a drilling boom with the development of the Utica and Marcellus shale formations, which underlie approximately 60% of the state. With Dry Natural Gas reserves estimated around 89.6 trillion cubic feet in 2017 (roughly ⅕ of the US total), natural gas development will likely play a big part in Pennsylvania’s future. The method for extracting natural gas from porous rock underneath the Earth’s surface, usually horizontal drilling paired with hydraulic fracturing (or “fracking”), is an extremely disruptive industrial process that could present significant human health and environmental repercussions (see also this compendium of public health studies related to fracking). Allegheny County, the focal point of SkyTruth’s previous analyses, has survived largely unscathed to this point, but developers have high hopes of expanding into the county.  

In order to see just how quickly natural gas development can expand, Allegheny residents need not look far. Allegheny’s neighbor to the south, Washington County, has become a critical site of natural gas production for the state of Pennsylvania. Not only does Washington County rank second in production among all Pennsylvania counties, but it also recently moved ahead of Susquehanna County as the home of the most active wells in Pennsylvania. Washington County is considered a part of the Pittsburgh metropolitan area, with a population of approximately 207,000. Though this is a fraction of the population of Allegheny County, its close proximity could prove indicative of what is to come in the county if stricter regulations are not put in place. In our final entry of this series, we will examine the expansion of drilling and fracking in Washington County, with eyes toward how the trends here might carry over to Allegheny County.

 

 

The area shown above lies close to the town of West Finley, PA and surrounds the perimeter of the Four Seasons Camping Resort (shown in the center of this image series). This area is right on the PA/WV border, within the heart of the Utica and Marcellus formations. These images show the growth of drilling infrastructure in a relatively low population setting.

 

The image above (courtesy Google) gives us a closer look at one of the drilling fluid impoundments which can be seen at the top left corner of the previous scene. SkyTruth recently wrapped up its 2017 FrackFinder update, which mapped the extent of new drilling in Pennsylvania between 2015 and 2017. According to our findings, the average size of one of these impoundment is 1.4 acres, slightly larger than the average football field. These ponds sometimes hold fresh water, and at other times are temporarily storing leftover fluid used in the hydraulic fracturing process which can contain volatile, toxic chemical additives.

 

 

This second area sees significant well pad development from 2008 to 2017. Located right outside the small town of Bentleyville, PA, several wells are constructed along this bend of I-70. This area is made up of former coal towns.  Mining facilities dot the landscape, indicating that residents of this area are no strangers to resource extraction.

 

 

This third series of images shows the massive development of the agricultural land surrounding Cross Creek Lake, located right outside of West Middletown. Cross Creek County Park (outlined in black), which encompasses the lake and its surrounding area, is the largest park in the county and serves as a convenient day retreat for residents of the city of Washington, PA, Washington County’s largest city. Many people come to the lake to fish, but the fracking operations in the park could prove to be detrimental to the health of the lake’s fish, according to recent research.

 

 

This close-up on an area at the Southwestern portion of the park (courtesy Google Earth) shows a children’s playground that lies just under 1500 feet away from an active drilling site (at lower right). This is well within the proximity suggested to be potentially hazardous to public health.

 

 

This final image series is taken from right outside the Washington County towns of McGovern and Houston. The drilling operations, which pop up in just four years, are located in close proximity to developing neighborhoods, parks, The Meadows Racetrack and Casino, and the Allison Park Elementary School. Unlike the other images depicted throughout this evaluation, this development takes place around a well established suburban area, where public safety could be at risk should disaster strike at one of these drilling locations.

 

 

The image above (courtesy Google) presents yet another example of just how close these drilling sites are built to residential areas in some instances. Massive industrial development could be seen and heard from one’s back porch!

This is all happening directly south of Allegheny County, so it is plausible that similar development could take place there.

Allegheny County is in an unique situation given its location, its population density, and its relatively low levels of natural gas development. As pressures on Allegheny County mount, we hope that these bird’s eye view evaluations of drilling in nearby counties will help to enlighten and inform policy moving forward. To see SkyTruth’s analysis of the effect that setback distances can potentially have on natural gas development in Allegheny County, please follow the link provided here.

This is the final entry in a three-part series visually chronicling the expansion of fracking across Pennsylvania.  This series is meant to complement our work mapping setback distances and potential adverse public health consequences in Allegheny County, PA.  For more about our setbacks work, please check out our blog post and interactive web app. To read the first entry in this series, please follow this link. To see the second entry in the series, click here.

Visualizing the Expansion of Fracking in Pennsylvania: Part 2

This is the second entry in a three-part series visually chronicling the expansion of fracking across Pennsylvania.  This series is meant to complement our work mapping setback distances and potential adverse public health consequences in Allegheny County, PA.  For more about this work, please check out our blog post or the web app. To see the first entry in this series, please follow this link.

If you have read the first entry in this series, you have been introduced to the situation that Allegheny County, PA currently finds itself in. Hydraulic fracturing (or “fracking”) paired with horizontal drilling has become a well established method for breaking natural gas out of porous, but impermeable, rock formations like shale and silty sandstone. Pennsylvania has been inundated with these fracking operations over the past decade following the discovery of the massive gas reserves located in the Utica and Marcellus Shale formations. Although this discovery has led to a booming industry in Pennsylvania, these activities have also had adverse public health and environmental consequences.  

Susquehanna and Bradford Counties in the northern portion of the state are two examples of areas that have been heavily developed with natural gas wells and facilities. According to a report issued by the Pennsylvania Department of Environmental Protection (PA DEP) in August of 2018, not only is Susquehanna County the largest producer of natural gas in the state, but it also accounts for 4% of the United States’ natural gas production. The same report points to Bradford County as the fourth largest natural gas producing county in the state, accounting for 13% of the state’s production. Although these two counties are both considered to be rural (their populations combined equal to roughly 8% of the population of Allegheny County, per the 2010 Census), the intensity of industrial infrastructure development across their landscapes has been astounding. In this post, we will look at the footprint the energy industry has created in both counties.

 

Figure 1

Figure 1 (shown above) gives an example of the development taking place in Susquehanna County. This time-series shows the expansion of wells over a seven year period in New Milford Township. The once agriculturally-dominated area is markedly changed by the introduction of gas drilling: new roads, fracking fluid impoundments, and supporting facilities carve up the landscape.

 

Figure 2(a)

 

Figure 2(b)

Figures 2(a) and 2(b) depict a very rapid expansion of drilling in Bradford County. Located between Troy Township and West Burlington Township, we’re able to see the development of ten new drilling sites in a 32 square kilometer area over just two years. These sites may have played a role in the 2.6 billion cubic feet (Bcf) of natural gas generated per day by Bradford County, according to the PA DEP’s August 2018 report.

 

Figure 3

Figure 3 shows an area near the city of Sayre in Bradford County. Situated along the border of New York and Pennsylvania, eight new drilling sites are developed between 2010 and 2013, along with subsequent roads and fracking fluid containment ponds. Drilling in these two counties is significant and — without a change in policy — could serve as a glimpse into Allegheny County’s drilling future.

To see SkyTruth’s analysis of the effect that setback distances can potentially have on natural gas development in Allegheny County, please follow the link provided here. Please be sure to check out Part 1 of this series and stay tuned for our final post in the series, detailing the current drilling scenario in one of Allegheny’s neighboring counties, Washington County.

Visualizing the Expansion of Fracking in Pennsylvania: Part 1

This will be the first entry in a three-part series visually chronicling the expansion of natural gas drilling with hydraulic fracturing — fracking — across Pennsylvania. This series is meant to complement our work mapping setback distances and potential adverse public health consequences in Allegheny County, PA. For more about this work, please check out our blog post and the web app.

Hydraulic fracturing (otherwise known as “fracking”) is a controversial and disruptive process that has taken the Pennsylvania landscape by storm. The state has become prime real estate for the extraction of natural gas given its location above both the Utica Shale and Marcellus Shale formations, two of the United States’ most fruitful reservoirs of natural gas. Over the past decade, prospectors and entrepreneurs have come from near and far to grow the region’s natural gas industry. As a result, parts of the state have become riddled with fracking pads, which aim to break the precious resource out of pockets of porous rock under the Earth’s surface for harvesting. There are human health and environmental consequences coinciding with this process, but little regulation protects the state’s counties from these adverse impacts of fracking.

Allegheny County, home to the city of Pittsburgh and over one million residents, stands as both a case study and as a potential stronghold against the encroachment of natural gas drilling. Their main defense against fracking lies in zoning regulations which require a “setback” between drilling sites and “occupied structures.” The current minimum setback distance in the state is 500 feet, but that has not stopped well pad development from slowly creeping closer to homes (and vice-versa, as new home construction moves into areas of pre-existing drilling). In this post, we will look at some of these areas in Allegheny County and try to gain insight into the county’s current state as it pertains to natural gas development.

 

This first area, located directly south of the Pittsburgh International Airport (PIT), shows some of this development.  In just four years, we see three new drilling sites pop up along a bend in I-376, as well as a drilling-related fluid retainment pond.  Notice the close proximity of the southernmost drilling site to these neighborhoods. A 500-foot setback distance may not be enough to protect these residential areas from potential health consequences linked to the fracking process:  recent research suggests that living within two miles (3.2 km) of a natural gas drilling site could subject you to adverse health effects.

 

This 3D image of the drilling site seen at the bottom left-hand of the scene in the gif above (courtesy Google Earth) shows just how close these drilling sites can get to residential areas.

 

This second set of images comes from the Forward Township, located on the Monongahela River along the border of Allegheny and Washington County.  Though not as heavily trafficked as the area surrounding PIT, the farms which lease their property to drilling companies could be putting their neighbors at risk.  Located near this well development is the William Penn School, a K-5 school, and several homes and farms. These residents might be facing potential threats without even having had a say in what is developed near them.

 

This example is located to the northwest of the towns of Tarentum and Brackenridge.  This is another demonstration of gas drilling in the county, with the pads appearing between 2010 and 2017.

 

This image, taken from the above scene, again shows just how close these drilling sites are being built to people’s homes.  This development is nearby where their children play and where people enjoy their time outside, as evidenced by the swimming pools which can be seen in the above image.  Though development in the county is sparse as of now, the groundwork is in place for a significant expansion of drilling in Allegheny County if setback distances are not strictly enforced or extended.

 

This 3D image (courtesy Google Earth) is from a farm immediately adjacent to the Pittsburgh Mills Mall in Tarentum. Notice that there are several houses that are extremely close to being within 500 feet towards the bottom left-hand of the scene; in fact, the house directly north of the drilling site is within 500 feet of the drilling site. This could be the landowner’s house, signifying that they have waived the minimum setback requirement for their home.

To see SkyTruth’s analysis of the effect that setback distances can potentially have on natural gas development in Allegheny County, please follow the link provided here.  And stay tuned for part two of this series, where we’ll look at fracking in Susquehanna and Bradford counties over the last decade.