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by Dr. Jim SpottsTechTalk is a forum for resolving erosion and sediment control and/or construction related problems from a technical perspective. Technical questions are submitted by the reader; suggestions may be from Southeast Environmental Consultants, LLC, (SEC) or other sources. Simple Solutions to Everyday Questions!
The stone in my retrofit seems to clog up quickly. What have I done wrong?
My guess is that you are using the wrong sized stone. Our Georgia Manuals clearly state that 3" to 4" inch stone is to be used. Finer stone will not have enough large pores to let the water through. You should clearly specify the stone size when you order it from the quarry, and verify that you receive the correct rock size upon delivery.
WATER CLARIFICATION with the Help of Polymers
SAVES TIME & MONEY!
Go Green with soil specific polymers provided by GeoLOGIC! They are a cost effective and environmentally friendly way to muck out sediment basins, stabilize soil and clarify water!
Site-specific polymers can be used to clarify stormwater, removing sediment and reducing the total suspended solids. It is far better to perform erosion control to treat the soil on the site before it has a chance to wash off-site. Water clarification is much easier when the soil is treated at the source. Less sediment being picked up by stormwater means the less sediment that is moving off site, the less turbid your stormwater is, and ultimately the more cost effective solution.
To enhance the benefit of proper soil stabilization, water clarification baffle panels are constructed of layers of geotextile fabric attached to a wooden frame. Series of these frames are placed upright, perpendicular to the flow of water. The water, after being treated with the Floc LogsŪ, passes through the baffle grid, where the treated sediment in captured by the fabric, allowing the clarified water to pass through.
ALTERNATIVE BMPs (see the Guidance Document for Details), other than just those found in the Green Book are now approved for ES&PC Plans? Polymer enhanced BMPs are the way to stabilize soils, clarify water to below 25 NTU's, and demuck sediment basins!
Click here to sign up for Certification or Recertification, or call us at 678-469-5120
Georgia Receives $54.7 Million in Recovery Act Funds for Water Infrastructure Projects|
(ATLANTA - June 3, 2009) In a move that stands to create jobs, boost local economies, improve aging water infrastructure and protect human health and the environment in the State of Georgia, the U.S. EPA has awarded $54,775,000 to the Georgia Environmental Facilities Authority. This new infusion of money provided by the American Recovery and Reinvestment Act (ARRA) of 2009 will help the state and local governments finance
many of the overdue improvements to water infrastructure that are essential to protecting public health and the environment across the state.More
Construction Firm Faces NPDES Clean Water Violations
Release date: June 4,2009
A construction company building a 79-acre residential subdivision of townhouses faces up to $157,000
in penalties of for alleged violations of the federal Clean Water Act.
The development firm has been constructing the subdivision since 2003. Because the company is disturbing more than one acre of land, they are required to apply for a NPDES General Permit for Storm Water Discharges from Construction Activities. Though construction began in 2003, the company failed to apply for a NPDES permit until April of 2008. Additionally, they failed to install and maintain adequate Best Management Practices (BMPs) at the Site such as sedimentation control barriers, stockpile containment, and surface and slope stabilization. Lastly, they allegedly discharged stormwater from the construction site without a permit.
City of Cartersville receives a little of EPA's Enforcement
Release date: 06/10/2009
EPA intends to assess administrative penalties under the authority of Section 309(g) of the Clean Water Act (CWA), 33 U.S.C. Section 1319(g). The alleged violations cited are of Section 405(e) of the CWA. The Respondent is being cited for reporting requirements of 40 CFR Section 503.18.
So....how much enforcement has Wal-Mart seen over the years? How much have they been ordered to spend? It may surprise you!
The Justice Department and the U.S. Environmental Protection Agency in 2001 reached an environmental agreement with Wal-Mart Stores Inc. to resolve claims the retailer violated the Clean Water Act at 17 locations in Texas, New Mexico, Oklahoma and Massachusetts. This was the first federal enforcement action against a company for multi-state violations of the Act's storm water provisions. Since then Home Depot and others have joined the fun.