Anchor ads are not supported on this page.

4S Ranch Allied Gardens Alpine Baja Balboa Park Bankers Hill Barrio Logan Bay Ho Bay Park Black Mountain Ranch Blossom Valley Bonita Bonsall Borrego Springs Boulevard Campo Cardiff-by-the-Sea Carlsbad Carmel Mountain Carmel Valley Chollas View Chula Vista City College City Heights Clairemont College Area Coronado CSU San Marcos Cuyamaca College Del Cerro Del Mar Descanso Downtown San Diego Eastlake East Village El Cajon Emerald Hills Encanto Encinitas Escondido Fallbrook Fletcher Hills Golden Hill Grant Hill Grantville Grossmont College Guatay Harbor Island Hillcrest Imperial Beach Imperial Valley Jacumba Jamacha-Lomita Jamul Julian Kearny Mesa Kensington La Jolla Lakeside La Mesa Lemon Grove Leucadia Liberty Station Lincoln Acres Lincoln Park Linda Vista Little Italy Logan Heights Mesa College Midway District MiraCosta College Miramar Miramar College Mira Mesa Mission Beach Mission Hills Mission Valley Mountain View Mount Hope Mount Laguna National City Nestor Normal Heights North Park Oak Park Ocean Beach Oceanside Old Town Otay Mesa Pacific Beach Pala Palomar College Palomar Mountain Paradise Hills Pauma Valley Pine Valley Point Loma Point Loma Nazarene Potrero Poway Rainbow Ramona Rancho Bernardo Rancho Penasquitos Rancho San Diego Rancho Santa Fe Rolando San Carlos San Marcos San Onofre Santa Ysabel Santee San Ysidro Scripps Ranch SDSU Serra Mesa Shelltown Shelter Island Sherman Heights Skyline Solana Beach Sorrento Valley Southcrest South Park Southwestern College Spring Valley Stockton Talmadge Temecula Tierrasanta Tijuana UCSD University City University Heights USD Valencia Park Valley Center Vista Warner Springs

Loma Alta Creek in Oceanside reeks

Ultra-violet treatment works, but only in summer

— On June 11, the local division of the state water board ordered the North County Transit District, which recently completed the Sprinter rail project, to pay a $685,000 fine for discharges of construction sediment into waterways, including southern Oceanside’s Loma Alta Creek.

The discharges are just the latest incidents in the creek’s murky history, which, according to the Loma Alta Creek Watershed Management Plan, includes a decade’s worth of pollution caused by residential and commercial development.

Loma Alta Creek runs parallel to Oceanside Boulevard, starting approximately seven miles east of the creek’s outlet at Buccaneer Beach. The creek is a natural drainage course, fed by storm drains and hillside seepage from over 6400 acres of land, 70 percent of which is deemed urbanized. During its journey to the coast, the algae-covered flow picks up high concentrations of chlorides, sulfides, oil, grease, and coliform bacteria — from human, bird, and pet fecal waste — earning the creek a spot on the federal Clean Water Act list of impaired water bodies.

The creek empties into the Loma Alta Slough, located across Pacific Street from Buccaneer Beach. A man-made sandbar prevents the bacteria-laden water from flowing onto the beach and into the ocean, but during heavy flows, the water breaches the sandbar, causing closures at the popular beach.

Buccaneer Beach, as well as the 1.1 miles of coastline surrounding it, also has a spot on the federal Clean Water Act list of impaired water bodies.

Sponsored
Sponsored

In 1992, in response to frequent closures of Buccaneer Beach, the City of Oceanside installed a pipe in the slough. The pipe hooked up with the outflow pipe from the La Salina Wastewater Treatment Plant, just to the north. The combination of treated sewage and untreated water from Loma Alta Creek was released 1.6 miles out into the ocean. Nearly one million gallons of untreated water was discharged per day.

Guss Pennell, environmental compliance officer for Oceanside, recalls the decision to divert the water. “The City of Oceanside made the decision to try and clean this beach up. Kids would typically play in the water from the creek because it was warmer and there weren’t any waves. I used to walk the beach back then and take samples, and I’d have to advise the parents to not let their kids play there. They would run over to the showers and start washing their kids off.

“We started thinking about diversion, and that’s when we diverted the water to the outflow pipe for the sewage plant. For us, at the time, we considered it to be an ideal solution. It’s 1.6 miles out, and anything bad in the water gets diluted,” says Pennell. “But because of the city growing like it has, we started getting closer to reaching the capacity for the outflow pipe. Plus, the Regional Water Quality Control Board didn’t like the fact that we were discharging untreated water into the ocean.”

In 2006 the City of Oceanside approached the State Water Resources Control Board for financial help in solving the problem at Buccaneer Beach. The solution, a $5 million ultraviolet-light treatment facility, is designed to capture the water and zap it with high-frequency electromagnetic radiation before sending it through a newly installed pipe onto the beach.

Pennell explains the process. “The water goes into a pipe, which is connected to a wet well. The wet well is actually deeper than the slough, and it’s got pumps in it. So when the slough fills up, the water just flows through the pipe and into the wet well. A pump then sends it through a two-millimeter filter. After that, it is sent to a sand filter, which is constantly cleaning itself. The debris gets bubbled up and flows into the sewer line.”

Two 16-foot-tall sand filters, half hidden in a concrete trench located just outside the treatment plant, provide the final filtering process before the water streams through ten-inch pipes into the boxy cinder-block plant to get zapped by the two-and-a-half-foot-long lamps.

“There’s a tube that the water goes through,” Pennell says, “and the ultraviolet lights are inside sleeves, and the water passes around them while the light is radiating. The light is enough to kill all the bacteria. As the bacteria pass, they just get zapped. But the water needs to be clear. If you have dirty water or it has chunks, the light can’t go through it.

“The process has been used for quite some time for drinking water,” adds Pennell.

The facility, located at the southwest corner of the La Salina Wastewater Treatment Plant, is designed to filter up to 700 gallons per minute, more than adequate during meager dry summer flows, which average approximately 300 gallons per minute. However, anything over the maximum will require the City to shut down the plant.

The plant will be operational only in summer months. In the winter, the outflow from the Loma Alta Creek and slough can be far too much for the facility to handle. “During winter, after heavy rains, it’s like a river here,” says Pennell, “and you would have probably 5000 gallons per minute going through here.”

Not only does the ultraviolet light facility not treat water in winter months but the source of the bacteria has not been addressed. “We’ve just hired two guys to inspect every industry in the city, in hopes to curb the issue of runoff, and we monitor the storm drains every year,” says Pennell. “But if you look along the creek, these pipes coming from neighborhoods flow 24/7, because people are overwatering their lawns and washing their cars.”

Chiara Clemente is a senior environmental specialist for the Regional Water Quality Control Board. “More detection or micro-scale removal has to happen,” she says. “In other words, they’re just treating it at the mouth. One way to approach it would be to go up into the regions and try to have more detention bases where pollutant removal would occur. They would be like little ponds and would capture the water, allowing the bacteria to attenuate. It would clean up the water upstream, and it would clean up more than just the bacteria. The more micro-scale you go, the better.

“I am concerned that by putting in these pollutant structures they are only treating the pollutant du jour, and it gives the citizens the false assumption that they don’t have to worry about what they are putting down the storm drains. In reality, for people dumping their motor oil upstream, this project isn’t going to do squat for that.”

Kirsten James, water quality scientist for Heal the Bay, a Santa Monica–based nonprofit organization that focuses on California’s coastal waters, says the City of Oceanside is acting in a manner similar to other coastal cities. “I know, in general, a lot of communities are working first to meet standards in the dry weather. We support this approach, because during dry weather is when the health risk is greatest because of all the people at the beach. Naturally, we want the water to be safe all year round, but it’s going to take some steps in order to get there.”

In the neighboring coastal town of Encinitas, where Cottonwood Creek flows toward Moonlight Beach, an ultraviolet treatment facility was built in 2002. The plant cost under $2 million, though it is smaller than Oceanside’s plant. Instead of a sturdy cinder-block building, the Encinitas facility is housed in a metal storage container and has filters that are half the size of Oceanside’s.

During typical summer flow, the Encinitas facility treats nearly 135 gallons per minute, says Eric Steenblock, water quality manager for Encinitas. “It’s primarily on during the dry summer months. It’s not completely taken off-line during the wet season, because there could potentially be some dry periods. If we go two weeks without a rain event during the wet months, the facility is still on, but if we anticipate rain, then we’re out there shutting it off.”

Before Encinitas built its ultraviolet treatment facility, Moonlight Beach was closed, on average, 40 times per year. After the facility was built, the average dropped to 6.

Pennell is looking forward to seeing similar results in Oceanside. “For the entire dry season I’m going to monitor the process — the raw water, the water through the system, and the discharged water. It will be fun. We monitor it everywhere, you know, ’cause we’re a beach town, and we don’t want to be a beach town and say, ‘Oh, we’ve got contamination.’ ”

For Pennell, the fun is set to start on July 7, when he says testing will begin on Loma Alta Creek Ultra-Violet Treatment Facility. The City will run water from the slough through the facility and back into the slough for a week. Then the beach outfall pipeline will be connected, says Pennell, and the treated water will go onto Buccaneer Beach.

Here's something you might be interested in.
Submit a free classified
or view all
Previous article

Dating Sites For Little People: Best Platforms & Tips

Next Article

Will L.A. Times crowd out San Diego U-T at Riverside printing plant?

Will Toni Atkins stand back from anti-SDG&E initiative?

— On June 11, the local division of the state water board ordered the North County Transit District, which recently completed the Sprinter rail project, to pay a $685,000 fine for discharges of construction sediment into waterways, including southern Oceanside’s Loma Alta Creek.

The discharges are just the latest incidents in the creek’s murky history, which, according to the Loma Alta Creek Watershed Management Plan, includes a decade’s worth of pollution caused by residential and commercial development.

Loma Alta Creek runs parallel to Oceanside Boulevard, starting approximately seven miles east of the creek’s outlet at Buccaneer Beach. The creek is a natural drainage course, fed by storm drains and hillside seepage from over 6400 acres of land, 70 percent of which is deemed urbanized. During its journey to the coast, the algae-covered flow picks up high concentrations of chlorides, sulfides, oil, grease, and coliform bacteria — from human, bird, and pet fecal waste — earning the creek a spot on the federal Clean Water Act list of impaired water bodies.

The creek empties into the Loma Alta Slough, located across Pacific Street from Buccaneer Beach. A man-made sandbar prevents the bacteria-laden water from flowing onto the beach and into the ocean, but during heavy flows, the water breaches the sandbar, causing closures at the popular beach.

Buccaneer Beach, as well as the 1.1 miles of coastline surrounding it, also has a spot on the federal Clean Water Act list of impaired water bodies.

Sponsored
Sponsored

In 1992, in response to frequent closures of Buccaneer Beach, the City of Oceanside installed a pipe in the slough. The pipe hooked up with the outflow pipe from the La Salina Wastewater Treatment Plant, just to the north. The combination of treated sewage and untreated water from Loma Alta Creek was released 1.6 miles out into the ocean. Nearly one million gallons of untreated water was discharged per day.

Guss Pennell, environmental compliance officer for Oceanside, recalls the decision to divert the water. “The City of Oceanside made the decision to try and clean this beach up. Kids would typically play in the water from the creek because it was warmer and there weren’t any waves. I used to walk the beach back then and take samples, and I’d have to advise the parents to not let their kids play there. They would run over to the showers and start washing their kids off.

“We started thinking about diversion, and that’s when we diverted the water to the outflow pipe for the sewage plant. For us, at the time, we considered it to be an ideal solution. It’s 1.6 miles out, and anything bad in the water gets diluted,” says Pennell. “But because of the city growing like it has, we started getting closer to reaching the capacity for the outflow pipe. Plus, the Regional Water Quality Control Board didn’t like the fact that we were discharging untreated water into the ocean.”

In 2006 the City of Oceanside approached the State Water Resources Control Board for financial help in solving the problem at Buccaneer Beach. The solution, a $5 million ultraviolet-light treatment facility, is designed to capture the water and zap it with high-frequency electromagnetic radiation before sending it through a newly installed pipe onto the beach.

Pennell explains the process. “The water goes into a pipe, which is connected to a wet well. The wet well is actually deeper than the slough, and it’s got pumps in it. So when the slough fills up, the water just flows through the pipe and into the wet well. A pump then sends it through a two-millimeter filter. After that, it is sent to a sand filter, which is constantly cleaning itself. The debris gets bubbled up and flows into the sewer line.”

Two 16-foot-tall sand filters, half hidden in a concrete trench located just outside the treatment plant, provide the final filtering process before the water streams through ten-inch pipes into the boxy cinder-block plant to get zapped by the two-and-a-half-foot-long lamps.

“There’s a tube that the water goes through,” Pennell says, “and the ultraviolet lights are inside sleeves, and the water passes around them while the light is radiating. The light is enough to kill all the bacteria. As the bacteria pass, they just get zapped. But the water needs to be clear. If you have dirty water or it has chunks, the light can’t go through it.

“The process has been used for quite some time for drinking water,” adds Pennell.

The facility, located at the southwest corner of the La Salina Wastewater Treatment Plant, is designed to filter up to 700 gallons per minute, more than adequate during meager dry summer flows, which average approximately 300 gallons per minute. However, anything over the maximum will require the City to shut down the plant.

The plant will be operational only in summer months. In the winter, the outflow from the Loma Alta Creek and slough can be far too much for the facility to handle. “During winter, after heavy rains, it’s like a river here,” says Pennell, “and you would have probably 5000 gallons per minute going through here.”

Not only does the ultraviolet light facility not treat water in winter months but the source of the bacteria has not been addressed. “We’ve just hired two guys to inspect every industry in the city, in hopes to curb the issue of runoff, and we monitor the storm drains every year,” says Pennell. “But if you look along the creek, these pipes coming from neighborhoods flow 24/7, because people are overwatering their lawns and washing their cars.”

Chiara Clemente is a senior environmental specialist for the Regional Water Quality Control Board. “More detection or micro-scale removal has to happen,” she says. “In other words, they’re just treating it at the mouth. One way to approach it would be to go up into the regions and try to have more detention bases where pollutant removal would occur. They would be like little ponds and would capture the water, allowing the bacteria to attenuate. It would clean up the water upstream, and it would clean up more than just the bacteria. The more micro-scale you go, the better.

“I am concerned that by putting in these pollutant structures they are only treating the pollutant du jour, and it gives the citizens the false assumption that they don’t have to worry about what they are putting down the storm drains. In reality, for people dumping their motor oil upstream, this project isn’t going to do squat for that.”

Kirsten James, water quality scientist for Heal the Bay, a Santa Monica–based nonprofit organization that focuses on California’s coastal waters, says the City of Oceanside is acting in a manner similar to other coastal cities. “I know, in general, a lot of communities are working first to meet standards in the dry weather. We support this approach, because during dry weather is when the health risk is greatest because of all the people at the beach. Naturally, we want the water to be safe all year round, but it’s going to take some steps in order to get there.”

In the neighboring coastal town of Encinitas, where Cottonwood Creek flows toward Moonlight Beach, an ultraviolet treatment facility was built in 2002. The plant cost under $2 million, though it is smaller than Oceanside’s plant. Instead of a sturdy cinder-block building, the Encinitas facility is housed in a metal storage container and has filters that are half the size of Oceanside’s.

During typical summer flow, the Encinitas facility treats nearly 135 gallons per minute, says Eric Steenblock, water quality manager for Encinitas. “It’s primarily on during the dry summer months. It’s not completely taken off-line during the wet season, because there could potentially be some dry periods. If we go two weeks without a rain event during the wet months, the facility is still on, but if we anticipate rain, then we’re out there shutting it off.”

Before Encinitas built its ultraviolet treatment facility, Moonlight Beach was closed, on average, 40 times per year. After the facility was built, the average dropped to 6.

Pennell is looking forward to seeing similar results in Oceanside. “For the entire dry season I’m going to monitor the process — the raw water, the water through the system, and the discharged water. It will be fun. We monitor it everywhere, you know, ’cause we’re a beach town, and we don’t want to be a beach town and say, ‘Oh, we’ve got contamination.’ ”

For Pennell, the fun is set to start on July 7, when he says testing will begin on Loma Alta Creek Ultra-Violet Treatment Facility. The City will run water from the slough through the facility and back into the slough for a week. Then the beach outfall pipeline will be connected, says Pennell, and the treated water will go onto Buccaneer Beach.

Comments
Sponsored
Here's something you might be interested in.
Submit a free classified
or view all
Previous article

Looking back at race relations in Coronado

A former football player recalls the good and the bad
Next Article

The Digital Currency Wave Hits the Shores of San Diego

Comments
Ask a Hipster — Advice you didn't know you needed Big Screen — Movie commentary Blurt — Music's inside track Booze News — San Diego spirits Classical Music — Immortal beauty Classifieds — Free and easy Cover Stories — Front-page features Drinks All Around — Bartenders' drink recipes Excerpts — Literary and spiritual excerpts Feast! — Food & drink reviews Feature Stories — Local news & stories Fishing Report — What’s getting hooked from ship and shore From the Archives — Spotlight on the past Golden Dreams — Talk of the town The Gonzo Report — Making the musical scene, or at least reporting from it Letters — Our inbox Movies@Home — Local movie buffs share favorites Movie Reviews — Our critics' picks and pans Musician Interviews — Up close with local artists Neighborhood News from Stringers — Hyperlocal news News Ticker — News & politics Obermeyer — San Diego politics illustrated Outdoors — Weekly changes in flora and fauna Overheard in San Diego — Eavesdropping illustrated Poetry — The old and the new Reader Travel — Travel section built by travelers Reading — The hunt for intellectuals Roam-O-Rama — SoCal's best hiking/biking trails San Diego Beer — Inside San Diego suds SD on the QT — Almost factual news Sheep and Goats — Places of worship Special Issues — The best of Street Style — San Diego streets have style Surf Diego — Real stories from those braving the waves Theater — On stage in San Diego this week Tin Fork — Silver spoon alternative Under the Radar — Matt Potter's undercover work Unforgettable — Long-ago San Diego Unreal Estate — San Diego's priciest pads Your Week — Daily event picks
4S Ranch Allied Gardens Alpine Baja Balboa Park Bankers Hill Barrio Logan Bay Ho Bay Park Black Mountain Ranch Blossom Valley Bonita Bonsall Borrego Springs Boulevard Campo Cardiff-by-the-Sea Carlsbad Carmel Mountain Carmel Valley Chollas View Chula Vista City College City Heights Clairemont College Area Coronado CSU San Marcos Cuyamaca College Del Cerro Del Mar Descanso Downtown San Diego Eastlake East Village El Cajon Emerald Hills Encanto Encinitas Escondido Fallbrook Fletcher Hills Golden Hill Grant Hill Grantville Grossmont College Guatay Harbor Island Hillcrest Imperial Beach Imperial Valley Jacumba Jamacha-Lomita Jamul Julian Kearny Mesa Kensington La Jolla Lakeside La Mesa Lemon Grove Leucadia Liberty Station Lincoln Acres Lincoln Park Linda Vista Little Italy Logan Heights Mesa College Midway District MiraCosta College Miramar Miramar College Mira Mesa Mission Beach Mission Hills Mission Valley Mountain View Mount Hope Mount Laguna National City Nestor Normal Heights North Park Oak Park Ocean Beach Oceanside Old Town Otay Mesa Pacific Beach Pala Palomar College Palomar Mountain Paradise Hills Pauma Valley Pine Valley Point Loma Point Loma Nazarene Potrero Poway Rainbow Ramona Rancho Bernardo Rancho Penasquitos Rancho San Diego Rancho Santa Fe Rolando San Carlos San Marcos San Onofre Santa Ysabel Santee San Ysidro Scripps Ranch SDSU Serra Mesa Shelltown Shelter Island Sherman Heights Skyline Solana Beach Sorrento Valley Southcrest South Park Southwestern College Spring Valley Stockton Talmadge Temecula Tierrasanta Tijuana UCSD University City University Heights USD Valencia Park Valley Center Vista Warner Springs
Close

Anchor ads are not supported on this page.