Knowing more than a few sewer operators in my day, I can tell you that their leading pet peeve is all the stuff that people dump down their toilets and drains.

I’ll never forget the courtroom description of a giant “rag ball” — some 30 feet long — found in Bremerton’s sewer. Rag balls are the accumulation of diapers, tampons and baby wipes that get flushed down the toilet and become caught somewhere in the sewer lines.

Bremerton’s famous rag ball became wrapped up in courtroom testimony during a lawsuit against a sewer contractor hired by the city to run the operation. For details, check out my story from April of 1998.

Steve Anderson

What I really wanted to share with you this week is a song called “O Christmas Grease” by Steve Anderson, a water resources analyst at Clean Water Services. This is the agency that manages wastewater and stormwater in a 12-city region west of Portland, Ore.

Steve often writes music and performs in a band when he’s not working at the utility. He told me that he started writing original songs as well as parodies of existing tunes to entertain his fellow water experts at conferences. Last week, for example, he showed up at a conference to help educators decide whether humor is useful in educating people about wastewater issues.

Steve says the public-education folks at Clean Water Services tolerates his songs, but they do not fully embrace his activities. His first song — a parody about the low levels of drugs that make it through the treatment process — got him into a little hot water with some folks in the business. “Dope in the Water” is sung to the tune of the Deep Purple original.

“The Ballad of Betty Poop” was written as a kid’s song for Take-Your-Children-to-Work Day. It’s about the adventures of a plastic GI Joe and other characters. It includes these famous lines: “Give it up, you toilet treasures… You’ll never make it all the way to the river…”

Steve has not released these songs to the public, though he readily shares them with friends and anyone who will listen. I must thank Gayle Leonard, who writes a blog called “Thirsty in Suburbia,” for bringing Steve’s songs out into the light and putting me in touch with this creative force in the sewer world.

Download the lyrics to all five songs (PDF 72 kb)

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Newton Morgan of the Kitsap County Health District collects a dye packet from Lofall Creek in December of 2010. This kind of legwork may be the key to tracking down pollution in Puget Sound.
Kitsap Sun photo by Meegan Reid

As I described in a story I wrote for last Saturday’s Kitsap Sun, the principal goals are these:

• Rebuild native Olympia oyster and pinto abalone populations.
• Increase access to public tidelands for recreational shellfish harvesting.
• Research ways to increase commercial shellfish production without harming the environment.
• Improve permitting at county, state and federal levels.
• Evaluate how well filter-feeding clams and oysters can reduce nitrogen pollution, with possible incentives for private shellfish cultivation.

To read more about the initiatives, check out:

• Washington Shellfish Initiative,
  
• A White paper on the state’s initiative (PDF 176 kb),
  
• National Marine Aquaculture Initiative
  
• National Aquaculture Policy (PDF 64 kb)
  
• National Shellfish Initiative
  

One of the most encouraging things is an attempt to expand Kitsap County’s Pollution Identification and Correction (PIC) Program to other counties, with increased funding for cleaning up the waters. Check out the story I wrote for last Friday’s Kitsap Sun, in which I describe the search-and-destroy mission against bacterial pollution.

As most Water Ways readers know, I’ve been following the ongoing monitoring and cleanup effort by the Kitsap County Health District for years with the help of Keith Grellner, Stuart Whitford, Shawn Ultican and many others in the district’s water quality program. In fact, just two weeks ago, I discussed what could be a turnaround for a chronic pollution problem in Lofall Creek, a problem that has taken much perseverance to resolve. (See Kitsap Sun, Dec. 2.) Unfortunately, the story is far from over.

I’ve talked about the importance of old-fashioned legwork in tracking down pollution, and I’ve suggested that other local governments use some of their stormwater fees or implement such fees for monitoring of their local waters. See Water Ways, June 30, for example.

Water free of fecal pollution has benefits for humans and other aquatic creatures. Thankfully, Washington State Department of Health’s shellfish program is careful about checking areas for signs of sewage before certifying them as safe for shellfish harvesting. Maybe the new shellfish initiative will allow the state to open beds that have been closed for years. That’s what happened in Yukon Harbor, where more than 900 acres of shellfish beds were reopened in 2008. (See Kitsap Sun, Sept. 25, 2008).

Certifying areas as safe for shellfish harvesting means that waterfront property owners are safe to enjoy the bounty of their own beaches. It also offers an opportunity for commercial growers to make money and contribute to the state’s economy.

Of course, this does not mean that intensive shellfish-growing operations ought to be expanded to every clean corner of Puget Sound, any more than large-scale crop farming or timber harvesting should be allowed to take over the entire landscape.

Some environmentalists have expressed concern that the Washington Shellfish Initiative could become a boondoggle for commercial shellfish growers. Laura Hendricks of the Sierra Club’s Marine Ecosystem Campaign sent me an e-mail noting these concerns about the expansion of aquaculture:

“Washington State has more native species listed as endangered than any other state in the USA. We see no mention of the adverse impacts in this initiative on nearshore habitat, birds and juvenile salmon.

“Governor Gregoire and the various speakers failed to mention that ALL of the pending shoreline aquaculture applications they want to ‘streamline’ are for industrial geoduck aquaculture, not oysters. Red tape is not what is delaying these applications…

“Shellfish industry lobbyists who pushed for this expansion are silent on the following three serious threats to our fisheries resources, forage fish, birds and salmon:

“1. Shellfish consume fisheries resources (zooplankton — fish/crab eggs and larvae) according to peer reviewed studies. A DNR study documented that forage fish eggs did not just stay buried high on the beach, but were found in the nearshore water column. Continuing to allow expansion of unnatural high densities of filtering shellfish in the intertidal “nursery,” puts our fisheries resources at risk.

“2. The shellfish growers place tons of plastics into Puget Sound in order to expand aquaculture where it does not naturally grow…

3. Mussel rafts are documented to reduce dissolved oxygen essential for fish and are known in Totten Inlet to be covered in invasive tunicates with beggiatoa bacteria found underneath…”

Ashley Ahearn of KUOW interviewed Laura Hendricks, and you can hear her report on EarthFix.

In her e-mail, Laura recommended the video at right. She also pointed to a blog entry by Alf Hanna of Olympic Peninsula Environmental News. Hanna suggests that environmental advocates who go along with commercial aquaculture may become the oysters that get eaten in Lewis Carroll’s poem “The Walrus and the Carpenter.”

Have intensive shellfish farms in Puget Sound gone too far in their efforts to exploit the natural resources of our beaches? Can shellfish farmers make money without undue damage to the environment? Which practices are acceptable, which ones should be banned, and which areas are appropriate for different types of aquaculture?

It would have been nice if these answers were known long ago, and in some cases they are. But at least this new shellfish initiative recognizes that more research is needed to answer many remaining questions. Research is under way in Washington state on geoduck farming, which involves planting oyster seed in plastic tubes embedded into the beach. Review “Effects of Geoduck Aquaculture on the Environment: A Synthesis of Current Knowledge” (PDF 712 kb) or visit Washington Sea Grant.

Other research in our region is needed as well, although it is clear that environmental trade-offs will be part of the deal whenever commercial interests cross paths with natural systems. For a discussion about this issue, check out the executive summary of the NOAA-funded publication Shellfish Aquaculture and the Environment (PDF 4.2 mb), edited by Sandra E. Shumway.

Needless to say, we’ll be keeping an eye on this process for years to come.

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A new series of studies by federal researchers is delving into the question of which pollutants in urban streams are killing coho salmon.

David Baldwin of Northwest Fisheries Science Center mixes a chemical soup of pollutants found in urban stormwater. Coho salmon will be kept in the brown bath for 24 hours to measure the effects.
Photo by Tiffany Royal, Northwest Indian Fisheries Commission

As I describe in a story in today’s Kitsap Sun, the new studies involve coho returning to the Suquamish Tribe’s Grovers Creek Hatchery in North Kitsap.

Of course, pollutants in streams are just one factor affecting salmon in the Puget Sound region, where development continues to alter streamflows and reduce vegetation, despite efforts to protect and restore habitat. But pollution may play a role that has gone largely unnoticed in some streams.

The new studies continue an investigation that began more than a decade ago with the involvement of numerous agencies. By now, most of us have heard about the effects of copper on salmon, but the latest round of studies will look at the collection of pollutants found in stormwater to see how they work together. It may be possible to pinpoint the chemical concentrations that result in critical physiological changes in salmon.

The latest work involves a team led by David Baldwin of NOAA Fisheries and Steve Damm of the U.S. Fish and Wildlife Service. The Suquamish Tribe is providing the fish, along with facilities and support.

For information on the ongoing effort to understand how toxic chemicals affect salmon, review these pages on the website of the Northwest Fisheries Science Center:

Acute die-offs of adult coho salmon 
returning to spawn in restored urban streams

The impacts of dissolved copper on olfactory 
function in juvenile coho salmon

Mechanosensory impacts of non-point source pollutants in fish

Cardiovascular defects in fish embryos exposed 
to polycyclic aromatic hydrocarbons

A page called “Coho Pre-spawn Mortality in Urban Streams” presents a series of videos that show the advance of an apparent neurological disease that first causes disorientation in coho salmon and then death. The video is taken in Seattle’s Longfellow Creek, an urban stream.

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The latest study on toxic chemicals (PDF 3.1 mb) Click on image to download

The final report in the series was released yesterday, prompting a story I wrote for today’s Kitsap Sun.

When accounting for all the pollution, it’s not surprising to learn that the sources of toxic chemicals are so diverse that it is difficult to figure out where everything is coming from. But we do know that if chemicals are picked up in stormwater, they are likely to make their way into freshwater, where they pose short-term or long-term risks to aquatic organisms.

The solutions are common sense, if one can be assured of the sources of harmful chemicals:

1. Remove materials from the environment if they are found to release toxic pollution. This can involve a legal ban on certain products or else educating people to select less toxic alternatives.
2. Reduce the amount of stormwater that flows into streams by infiltrating rainwater into the ground before it leaves the site. This “low-impact development” can include permeable pavement, rain gardens and even natural forests where a thick organic carpet has been retained.
3. Clean sediment out of storm drains and sweep up the dust on city streets and other areas where toxic chemicals are likely to reside in metallic form or be bound to soil particles. Safely dispose of these materials. When the rains arrive, there won’t be much left to wash into streams.

While all this sounds simple enough, the issue gets complicated when trying to decide which products to ban and when to recommend that people voluntarily stop using certain items. Alternative products may cost more, which tends to raise questions among users. Also, manufacturers and retailers are not likely to give up selling profitable products without a fight.

Further complicating the situation is the scientific uncertainty surrounding the alleged harm when someone declares a product not good for the environment. Such uncertainty inevitably sparks scientific, economic and policy debate about whether the proposed action is justified.

For example, the Washington Legislature approved a ban on automobile brake pads containing certain levels of copper. Brake pads are believed to release enough copper to harm salmon in some urban streams. But the metallic form of copper found in brake pads is not toxic until it is converted to an ionic form. How much gets converted in the environment is still a question. For details, see a story I wrote for the Kitsap Sun in March of 2010.

As for the latest study released yesterday, some additional focused research and debate may be needed before further actions can be taken.

For example, questions are raised about the total amount of toxic metals leached from roofing materials, including common asphalt shingles. Copper, cadmium, lead and zinc are listed as contaminants along with diethylhexyl phthalate (DEHP).

As suggested by the report, direct studies of roofs in the Puget Sound region could help determine the potential harm of various roofing materials and suggest whether bans or advisories are appropriate.

The amount of polycyclic aromatic hydrocarbons (PAHs) coming from creosote-treated wood was something of a surprise in the report. If anything, the findings tend to support the ongoing effort by the Department of Natural Resources, which has been removing creosote pilings from shorelines. Further studies might help to focus removal efforts in areas most sensitive to creosote compounds.

The latest report, which includes discussions about the uncertainties, is called “Assessment of Selected Toxic Chemicals in the Puget Sound Basin, 2007-2011.” You may also wish to review all the toxics work to date on Ecology’s webpage called “Control of Toxic Chemicals in Puget Sound.”

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Smith made the comments Monday in Tauranga, where near-pristine beaches are becoming fouled with oil.

“It is my view that the tragic events we are seeing unfolding were absolutely inevitable from the point that the Rena ran onto the reef in the early hours of Wednesday morning,” Smith is quoted as saying in Aljazeera.

Al Fleming of Forest and Bird, New Zealand’s largest independent conservation group, has mobilized volunteers to search for oiled wildlife.

“We are faced with a potential disaster along our coastline, and many bird species are currently breeding,” said Fleming in a news release. “The news that the oil spill is getting much worse is a huge worry.”

The organization estimates that 10,000 grey-faced petrels are breeding on nearby islands, along with thousands of diving petrels, white-faced storm petrels and fluttering shearwaters.

Up to 300 little blue penguins are estimated to be living along the coast in the vicinity of the oil spill. Seven of the penguins were among the birds fouled by oil and brought in for rehabilitation.

Spring tides and storm surges could bring oil-laden water up high on the beaches, where New Zealand dotterels, oystercatchers, white-fronted terns and other shore birds are beginning to nest on sandy beaches just above the high-tide mark, the group says.

Migratory birds such as the godwits and red knots are returning to New Zealand from the Northern Hemisphere and arriving in Tauranga and other estuaries along the Bay of Plenty coast.

Whales and dolphins are known to be in the area, and a blue whale and calf were spotted about a week ago. Fur seals are molting on headlands and beaches throughout the region.

Mussels, crabs, and skinks are plentiful on the beaches.


“Without quick action,” said Fleming, “the oil will blanket our filter feeding marine life which are not only important water filters but also crucial in the diets of many animals. Eventually the oil will accumulate throughout the food web.

In this video by the New Zealand Herald, Greg Gay of Portland, Ore., joins local residents in cleaning up a beach near Tauranga.

The latest news is that containers from the ship have fallen into the sea, broken up and their contents — including freeze-dried foods — are washing up on nearby beaches.

“A crack running around the ship’s hull was steadily widening in heavy seas, and officials believed it was only a matter of time before the vessel split in two,” reports a team of reporters from the New Zealand Herald.

“Three tug boats were waiting either to hold the stern on the reef as authorities try to remove oil from the Rena’s fuel tanks or to tow the stern to shallow water.”

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Wolf eels at Sund Rocks in Hood Canal are disturbed by low-oxygen conditions.
Photo courtesy of Pat Lynch

In a story published in Monday’s Kitsap Sun, I took a step back from the immediate low-oxygen conditions and discussed our knowledge of Hood Canal, along with plans being formulated to address the low-oxygen problem.

Low-oxygen conditions reared their ugly head during the last week in September (Water Ways, Sept. 27). No major fish kills were reported before things began to improve somewhat by Friday (Water Ways, Sept. 30).

I’m keeping my eye on the charts and graphs and noticed a couple things that we can talk about. Compare the two oxygen profiles below with an eye to the surface conditions at Hoodsport (blue line) and deeper waters there below 40 meters.

Oxygen profile from Sept. 30

Oxygen profile today (Oct. 5)

The first thing I noticed was that the top of the hypoxic layer moved up from about 17 to 10 meters. That means if fish are avoiding that low-oxygen water, they will also move up. As far as I know, divers have not reported any observations to confirm or deny that change. One explanation is that the heavy ocean layer at the bottom is pushing up the entire water column. It also could mean that the surface layer has grown thinner, such as when south winds blow or north winds stop.

Meanwhile, the bottom of that middle hypoxic layer has moved up from about 70 to 50 meters and the edge has smoothed. That is an indication that the heavy ocean water, which contains more oxygen, is mixing with the bottom of the hypoxic layer.

One may also notice that the deep water at Twanoh (turquoise line) has become more oxygenated all the way through and is sharply higher in oxygen at the bottom. Perhaps this is an indication that the heavy ocean water has reached Twanoh and is mixing at the bottom, while winds and tides mix the water at the top.

University of Washington oceanographer Jan Newton has noticed a decline in the oxygen concentration in the middle layer at Hoodsport. She raises the prospect that this could result, in part, from low-oxygen water being pushed back from Lower Hood Canal by the annual intrusion of heavy ocean water. It needs to be checked further, she said.

I hope we get some diver observations this weekend or sooner. In discussing the current conditions with Dan Hannifious of Hood Canal Salmon Enhancement Group, we both wondered when deep-water fish will move back to their normal depth. What would it take for them to break through the middle low-oxygen layer to reach deeper water that is higher in oxygen.

If you would like to become an armchair observer of these conditions in Hood Canal, check out the graphs on the website of the Hood Canal Dissolved Oxygen Program. You’ll have to save old graphs to compare them closely, although another graph on the Nanoos website shows you changes in oxygen levels and other parameters over time for selected depths. (Click on “Regions” then “Puget Sound” and locate the Hoodsport buoy to find the graphs.)

Will the conditions in Hood Canal get better or worse this year? I’ll let you know, but if you see something unusual, feel free to post a comment here.

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I reported yesterday that fish could safely go down to 60 feet in a story posted on the Kitsap Sun website, but conditions are changing all the time. Now it looks like the cutoff depth is closer to 50 feet, while waters closer to the surface appear to be more oxygenated than yesterday.

I discussed the situation with Dan Hannifious of the Hood Canal Salmon Enhancement Group and included some of Dan’s comments in the story. Rather than repeat those comments here, I’ll let you click on the story.

What I did want to share are a couple graphs that show current conditions as of 9:30 this morning. Most of the real-time analysis comes from monitoring buoys in Hood Canal.

This is a profile of the oxygen levels from the surface down to the bottom of Hood Canal, or close to it. The blue line is for the Hoodsport buoy, turquoise for Twanoh and green for Dabob Bay. The black line is for Carr Inlet in South Puget Sound and purple is Point Wells near Edmonds. Biological "stress" occurs at less than 5 milligrams per liter, while "hypoxia" is shown at 2 mg/l. At Hoodsport, if fish go below about 18 meters, they will be in hypoxic conditions. Earlier this week, these condition were seen at the surface.
Data from the Hood Canal Dissolved Oxygen Program.

This graph shows changes over time. While conditions have gotten better near the surface (blue line), it doesn't show much change at 66 feet (green line). As we can see in the previous graph, the changes are occurring in shallower water and will take time to reach this depth. The red line shows the intrusion of heavy seawater containing more oxygen. When comparing, remember one graph uses meters, the other feet.
Data compiled by the Integrated Ocean Observing System

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A giant Pacific octopus, which should be hiding, clings to a rock wall Saturday at Sund Rocks Marine Preserve.
Photo by Pat Lynch

The mechanism that causes the oxygen to decline is a little complicated, but it’s pretty well understood. It involves nitrogen, sunlight, plankton, heavy sea water and south winds. See the story I wrote for today’s Kitsap Sun for a brief explanation, or check out a story from April 12, when I described findings from a scientific panel about the sources of nitrogen in the canal.

The graph below shows the oxygen levels at three depths near Hoodsport. As you can see from the blue line, oxygen levels near the surface declined rapidly over the past five days, a period when winds blew out of the south. Levels below 2.5 milligrams per liter are considered highly stressful for sea life.

At Hoodsport, oxygen levels rose at the 10-foot mark starting about midday yesterday. They declined again this morning, starting after midnight. Being close to the surface, oxygen levels in these waters are greatly influenced by winds and waves.

Waters at 66 feet deep stayed low in oxygen but fairly stable, as shown by the green line. Fish tend to swim into shallow waters to avoid those low-oxygen levels. A huge mass of low-oxygen water lies in this mid-range area.

Meanwhile, the low-oxygen waters in the middle layers are being pushed upward by heavy seawater coming in from the ocean. That deep ocean water contains more oxygen than the layer above it, as shown by the red line.

To follow these changes in close to real time, go to the Nanoos website and click on “Click here to view all assets” then on “regions” in the left column and “Puget Sound.” You can get information from most of these buoys. Hoodsport is the closest to the action in southern Hood Canal.

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“Seattle and King County are poised to spend more than $1.3 billion of ratepayer money on pollution-cleanup programs that won’t even move the water-quality needle in Puget Sound.”

Yesterday’s story, by reporter Linda Mapes, is about combined sewage overflows — something that Bremerton knows a little about, having completed a cleanup program after 20 years and $50 million in expenditures. See my story from May 30 in the Kitsap Sun.

The premise of Linda’s story is that it might be better for local governments to focus on reducing stormwater overall rather trying to meet a 1988 state pollution standard focused on raw sewage discharges. After all, the reasoning goes, stormwater containing toxic chemicals may be worse for Puget Sound than stormwater mixed with sewage.

The state requirement, by the way, limits discharges of raw sewage in stormwater to one overflow per year, on average, for each outfall pipe.

There is plenty of room for disagreement, as the Times’ story points out. Christie True, director of King County Natural Resources and Parks, stresses that upcoming CSO projects will reduce the public’s exposure to untreated sewage. But Larry Phillips, a member of the King County Council, says dollars spent on CSO projects can’t be spent on buying habitat or attacking the surface-runoff problem, which the Puget Sound Partnership has deemed the region’s top priority.

Bill Ruckelshaus, the first administrator of the EPA and former chairman of the Puget Sound Partnership’s Leadership Council, was quoted as saying:

“This is just crazy; we don’t have unlimited funds in this country, and whatever we do, we ought to spend where we get the most bang for the buck … Cost-benefit has not been part of the discussion.”

David Dicks, former executive director of the partnership and now a member of the Leadership Council, said this:

“It’s just momentum. And what you learn in these things is you can go in and scream and yell and be a revolutionary for a while, but the institutional momentum of these laws has a lot of power, and it is just dumb power. … What we need to do is turn off the autopilot and see what makes sense here.”

Ecology and EPA officials took a stand in favor of the existing rules for reducing sewage discharges. Both issued quick responses to the Seattle Times article, writing on a blog called ECOconnect

From Kelly Susewind, manager of Ecology’s Water Quality Program:

“Infrastructure investments are needed to address water pollution caused by both CSO and stormwater discharges. In areas served by combined systems, CSO projects provide solutions to both CSO and stormwater pollution.

“The investments ratepayers make in their communities’ CSO programs protect public health and Washington’s waters, two principal missions of sewer and stormwater utilities. The success of these projects advances the goals of our state and federal laws to protect, clean up and preserve our waters for present and future generations.”

Adds Dennis McLerran, EPA’s regional administrator:

“Discharging large amounts of raw sewage to Puget Sound and Lake Washington is simply not acceptable. That’s why EPA has worked closely with the state, King County and Seattle over many years to address sewage treatment and the ongoing problem of Combined Sewer Overflow (CSO) pollution. With that work nearly completed, now is not the time to lose our resolve to finish the job visionary leaders in the Puget Sound region started some 40 years ago.”

Cost versus benefits for Bremerton CSO project (click to enlarge)
Kitsap Sun graphic

Shellfish were not mentioned in this discussion — maybe because it was focused on Seattle and King County, where industrial pollution is a major problem. In Kitsap County, shellfish are worth millions of dollars a year to the local and regional economy. For Dyes Inlet, the reopening of shellfish beds probably would not have happened except for a lawsuit that forced the city of Bremerton to comply with the federal Clean Water Act on a strict time schedule.

Lisa Stiffler, former PI reporter who now works for Sightline Institute, discussed Bremerton’s accomplishment with a focus on the cost. See “How Bremerton cleaned its waters, and came to wonder about the costs” in the online publication Crosscut.

A case can be made that shellfish beds in Dyes Inlet could have been cleaned up enough to be reopened by spending just the first $33 million, thereby saving the extra $17 million that it took to bring the city into full compliance with federal law.

But state and county health officials have told me on many occasions that Bremerton and Kitsap County, along with local residents, must continue to work hard to keep the Dyes Inlet shellfish beds open. Beaches in the inlet remain on the verge of closure again, and population growth tends to exacerbate the bacterial pollution.

Kitsap County Health District is respected for its monitoring and pollution-fighting program, but it does help to know that release of raw sewage into the inlet has become a very rare event.

Lisa makes a good point when she says Bremerton would have saved money if engineers would have known more about low-impact development during the planning for CSO reductions. Infiltrating rain water near the source (preferably before it runs off the property) reduces the need to deal with stormwater flowing through pipes. Keeping stormwater out of sewer lines by using LID techniques effectively allows the pipes to carry all the sewage to the treatment plants, even during heavy rains.

Bremerton has become a leader in LID. If city officials had known 20 years ago what they know today, they probably would have spent more on pervious pavement and rain gardens and less on expensive piping networks. But it appears they did their best with the knowledge they had — and LID has become a major part of ongoing efforts to address stormwater.

Cities still working on CSO problems may find Bremerton’s experience helpful. Keeping stormwater out of pipes is proving effective, whether or not those pipes also contain sewage.

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I featured their song “Halifax Harbour” in Water Ways on Nov. 24, 2008. This time, I’ve added a new song (in the video player at right) called the “BP Song.” They’re singing about an oil spill that occurred in the Gulf of Mexico.

Their Bowser and Blue Webpage includes many more songs of all kinds. But the advance warning still stands: Some of their videos are irreverent, off-color and even medically oriented to the point of going places you never want to go — as in “Colon is a Mighty Big River.”

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