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Editor's Note
New Opportunities, New Look
Back to school is just around the corner: What better time to organize your own continuing education plans? Storm Water Solutions and partner Stormwater USA are pleased to offer a free webinar on construction site storm water and NPDES compliance. Register to join facilitator and 25-year erosion and sediment control veteran Cheryl L. Moore in this learning and training opportunity, scheduled for Nov. 17 from 2 to 2:30 p.m. EST.
Also, SWS RunOff subscribers will notice that the monthly e-newsletter has gotten a face-lift. When you provide feedback regarding our editorial products, we listen: The result in this instance is a fresh, easier-to-navigate format. We will continue to deliver important product information in a separate monthly e-newsletter and look forward to hearing how you use these updated SWS resources.
Finally, a friendly reminder that 2010 Top Storm Water & Erosion Control Projects nominations are due next week—on Aug. 20. Submit your nomination form today, and good luck.
- Caitlin
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Editor's Spotlight
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NEWS
++ Lead Stories ++
Study of Disinfectants on PE Pipe Complete
Chlorine resistance and durability examined
For full story visit:
http://www.sgc-ecms.com/ecms/redirect.cfm?LID=331950&SID=2826301
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USDA Announces Major Wetland Restoration Project
Project to create of the largest contiguous easement acquisitions in history of the Wetlands Reserve Program
For full story visit:
http://www.sgc-ecms.com/ecms/redirect.cfm?LID=331951&SID=2826301
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U.S. EPA Considering Water Quality Regulation Revisions
Agency to hold public listening sessions
For full story visit:
http://www.sgc-ecms.com/ecms/redirect.cfm?LID=331952&SID=2826301
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EPA Issues New Guide to Improving Storm Water Management
Local streams, Chesapeake Bay to benefit
For full story visit:
http://www.sgc-ecms.com/ecms/redirect.cfm?LID=331953&SID=2826301
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Research Focuses on Toxic Blooms of Blue-Green Algae
NOAA project to determine how different kinds of phosphorous trigger toxic blooms of blue-green algae in Great Lakes
For full story visit:
http://www.sgc-ecms.com/ecms/redirect.cfm?LID=331954&SID=2826301
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++ Surface Water ++
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Research Projects on Freshwater Systems Announced for Northwest, Southeast
Goals include examining how climate change will affect water temperature, quality and quantity
For full story visit:
http://www.sgc-ecms.com/ecms/redirect.cfm?LID=331955&SID=2826301
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EPA Releases Second Phase of Toxicity Testing Data for Eight Oil Dispersants
Results confirm dispersant used in response to oil spill, when mixed with oil, is generally no more or less toxic than mixtures with other available alternatives
For full story visit:
http://www.sgc-ecms.com/ecms/redirect.cfm?LID=331956&SID=2826301
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++ Regulatory/Legislative ++
EPA Approves Automatic, Programmable Flushing Systems for Funding
Recognizing conservation benefits, EPA authorized the funding under its Green Projects Reserve program
For full story visit:
http://www.sgc-ecms.com/ecms/redirect.cfm?LID=331957&SID=2826301
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EPA Releases Rulemaking Guidance on Environmental Justice
Agency plans to expand conversations to overburdened communities, where its work can make significant difference for health and economy
For full story visit:
http://www.sgc-ecms.com/ecms/redirect.cfm?LID=331958&SID=2826301
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++ General ++
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Smith & Loveless Engineer Featured on Local News
Frank Weis honored for contributions to his community
For full story visit:
http://www.sgc-ecms.com/ecms/redirect.cfm?LID=331959&SID=2826301
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Stantec Selected for Maricopa County Flood Hazard Study
Two-year project will provide safety guidelines for residents, future development
For full story visit:
http://www.sgc-ecms.com/ecms/redirect.cfm?LID=331960&SID=2826301
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IECA Announces Winner of "Presenter of the Year" for 2010
Dwayne Stenlund receives honor for "Concrete Management Best Practices in Minnesota" course
For full story visit:
http://www.sgc-ecms.com/ecms/redirect.cfm?LID=331961&SID=2826301
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Storm Water Solution Aids Post-Katrina Rebuilding of Annex Complex
Hancock County, Miss., received FEMA funding to replace severely damaged county buildings in Bay St. Louis
For full story visit:
http://www.sgc-ecms.com/ecms/redirect.cfm?LID=331962&SID=2826301
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WateReuse Symposium Set for Sept. 12 to 15
Event reaches 25th year
For full story visit:
http://www.sgc-ecms.com/ecms/redirect.cfm?LID=331963&SID=2826301
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Imbrium Systems Announces Stormceptor Installation No. 32,425
Announcement made at StormCon 2010
For full story visit:
http://www.sgc-ecms.com/ecms/redirect.cfm?LID=331964&SID=2826301
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PumpTec Coming to Atlanta Sept. 20 to 21
Conference provides opportunities to earn CEUs, receive hands-on instruction from pump experts
For full story visit:
http://www.sgc-ecms.com/ecms/redirect.cfm?LID=331965&SID=2826301
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Yorkshire Water Recognizes Black & Veatch's Safety Success
Kevin Carlisle wins Individual Contribution Category of Partner Awards
For full story visit:
http://www.sgc-ecms.com/ecms/redirect.cfm?LID=331966&SID=2826301
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Marc Walch Reappointed to Water Infrastructure Committee
PBS&J water infrastructure project director a longtime member of WEF
For full story visit:
http://www.sgc-ecms.com/ecms/redirect.cfm?LID=331967&SID=2826301
Erosion Control, Naturally
By Chris Thomson
Rockwood Park is located in the center of Saint John, New Brunswick—Canada's oldest incorporated city. Landscape design firm Basic Design Associates (BDA) was hired to update, improve and beautify this horticultural gem, and the contract was awarded to Debly Construction in late 2008.
Basic hydroseed failed Rockwood Park after extreme rainfall.
Hydroseed A: Swept Away
The original vegetation contract specified that basic Hydroseed A—consisting of seed, fertilizer and cellulose mulch—be applied to a sloped area. The basic hydroseed was applied twice and failed both times due to extreme weather conditions, specifically repeated back-to-back heavy rain events. The basic hydroseed did not protect the slope's minimal soil against prolonged water runoff from above. Located in a highly visible area, the slope caused the contractor and designers stress and concern.
Natural Alternatives
Staff at BDA had attended a lecture on new fourth-generation erosion prevention technologies at the New Brunswick Road Builders Convention in February 2008. One of the presenters, Steve Zwilling of Profile Products LLC, spoke about vegetated solutions designed to replace rock and concrete, including Flexterra and the GreenArmor system. Following the lecture, BDA contacted Bill Dashwood of Maritime Hydroseed with a question: "Does that sticky stuff [Flexterra] they talked about at NB Road Builders really work?"
"We market to engineers, landscape architects and road building contractors the benefits of vegetated erosion solutions in place of rock and concrete," Dashwood said. "Why wouldn't the client choose a natural landscape over a grayscape?"
Using natural alternatives, grass covered slopes within about one month.
Site Review & Remediation
A site review conducted by Maritime Hydroseed staff confirmed that the site conditions were a challenge. After Hydroseed A fails, traditionally the next application would be Hydroseed B, consisting of basic hydroseed with blown hay and a tackifier. It was clear that Hydroseed B would not be a satisfactory application to resolve Rockwood Park's erosion problems.
In the Atlantic Canadian climate, traditional blankets can be ineffective because the soils are rocky and nutrients get drawn into the blanket, leaving the grass deprived. Rock armor and concrete are extremely expensive and unattractive, but natural, permanent and less costly options are available.
The site remediation at Rockwood Park involved rebuilding the washed out areas and adding topsoil. Due to the seasonal rains, Maritime Hydroseed applied a fiber-reinforced matrix for its quick cure time and thick mat-like cover. The topsoil had a neutral pH, and rapid grass growth was necessary.
Quality Seed, Woodbridge, Ontario, Canada, supplied New Brunswick Department of Transportation roadside seed mix, with a high pure live seed count. MultiGro, Petit-Rocher, New Brunswick, Canada, supplied 15-25-15 with 50% sulfur-coated urea fertilizer. Maritime Hydroseed applied Flexterra Flexible Growth Medium at 4,000 lb/acre using the Finn 400 Titan.
Although an unusually wet June persisted, the grass grew quickly and the solution performed as expected. The results 34 days after application are seen in this feature's second photo.
Chris Thomson is owner of Maritime Hydroseed. Thomson can be reached at chris@maritimehydroseed.com or 506.672.1600.
http://www.sgc-ecms.com/ecms/redirect.cfm?LID=331944&SID=2826301
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