Stormwater vault installation to improve storm water runoff that goes into Long Island Sound

We had our second installation of the TerreKleen Water Quality Treatment Vault get installed in Stamford this week.

The TerreKleen is unique in that this hydrodynamic separator utilizes stacked inclined plates to assist sediment to fall out. The first chamber is designed to capture large sediment, trash/debris, and contain oil. The second chamber contains stacked inclined plates. Stacked inclined plates have been widely used in the drinking water industry for the past 80 years. This technology has been adapted to the storm water industry.

The installation went smoothly and quickly. Here are a few pics...

This picture shows the hole where it will be installed. The markings show the positioning where the unit will go.



TerreKleen is made of 3 pieces. The TerreKleen is assembled in-place as each piece stacks on top of each other.

In this picture, you see the "working section" of the TerreKleen hoisted off the flat bed truck with a crane. The first section of the installation is getting positioned over the hole and being aligned for installation.

The site is being re-developed. The building behind will be re-furbished.

The second section, the riser, has been lifted off the tractor trailer and is getting positioned into place. It will install directly on top of the first section. Each of the three sections are designed to "interlock" together.

The lines attached to the crane's lifting chains assist in the alignment.






The riser section installs very quickly right on top of the working part of the TerreKleen.

TerreKleen can be easily sized for any size project. The installation is the same for any unit. While this picture shows the smallest TerreKleen unit (approx. 4'W X 6'L in size), available, TerreKleen is easily sized for any size project. No matter the size of the project, the TerreKleen takes advantage of the efficiency of the stacked inclined plates to maximize sedimentation surface area in the smallest unit footprint.

One more piece and the installation will be done.






Better not blink, the top is quickly installed!

This client requested manhole covers for the top. Other clients prefer manhole grates.










Installation complete and lifting rings are removed. Contractor will connect all of the inlet and outlet pipes and backfill around the unit. Then, unit is ready to work.

If you have any questions about this installation or any of the other storm water products in our line, give us a call. Click here to get to our website.

Cleaner storm water in 45 minutes! (The quick and easy installation of a hydrodynamic separator)

Our first hydrodynamic separator (water quality treatment vault) was installed yesterday in Stamford, CT. This separator will capture trash, sediment, debris and also contain oil.
The TerreKleen is a modular system that installs in about 45 minutes. Here are some pictures showing the installation.

The unit arrived on site via flatbed truck at about 8AM. The crane arrived shortly after. Setting up the crane and final site preparations took about an hour. Around 9AM, the crew started to prepare the unit for installation by attaching these hooks to the TerreKleen. They used these hooks to secure the first section.














The crew wants to get this unit installed as quickly as possible. The installation site is in a tidal area and the tide is starting to come in. The crane operator lifts the TerreKleen off the truck and moves it toward the hole where it is getting installed. The ropes will assist in guiding the unit.

The working part of the TerreKleen is successfully installed. As you can see, the TerreKleen is a two chamber system.
The first chamber (near side) is designed to capture: sediment, trash, debris and will contain oil.
The second chamber (far side) houses the stacked inclined plates. Stacked inclined plates have been widely used in the potable drinking water industry for the past 80 years. Their use give the TerreKleen the largest sedimentation surface area in the smallest area footprint. Once sediment is captured in the second chamber, they will not re-suspend regardless of flow rate.



















In a few minutes, the riser is installed and we can move on to the final piece.















A few more minutes and the top is positioned for installation.














45 minutes later.....TerreKleen hydrodynamic separator installation is complete! All that is left now is to hook up the pipes and back fill around the unit.

More projects are planned. We will keep you posted.

Stormwater Management Including Discharges from Newly Developed and Redeveloped Sites

Stormwater Management Including Discharges from Newly Developed and Redeveloped Sites
Information Collection Request (ICR) for proposed rulemaking

EPA is proposing to disseminate a survey to owners, operators, developers, and contractors of developed sites, owners and operators of municipal separate storm sewer systems (MS4s), and states and U.S. territories, which is designed to inform a rulemaking to strengthen stormwater regulations and to establish a comprehensive program to reduce stormwater from newly developed and redeveloped sites. Stormwater discharges from developed sites can harm water quality through increases in stormwater volume and pollutant loadings into nearby waterways. Generally, as sites are developed there is an increase in areas where water cannot infiltrate, so stormwater volume increases. The resulting stormwater flows across roads, rooftops, and other surfaces, transporting pollutants that are then discharged into waterways.

EPA intends to propose a rule to control stormwater from, at minimum, newly developed and redeveloped sites, and to take final action no later than November 2012. In order to support the rulemaking EPA is proposing to require three separate questionnaires focusing on gathering data about current stormwater management practices, including those used at newly developed and redeveloped sites. EPA’s proposed survey would gather data from three groups: 1) the owners, operators, developers, and contractors of newly and redeveloped sites; 2) the owners and operators of municipal separate storm sewer systems; and 3) states and territories. The draft survey would require detailed information about stormwater management and control practices, local regulations, and baseline financial information.

On October 26, 2009, EPA signed a Federal Register notice announcing its intent to submit a Information Collection Request (ICR) for the three questionnaires to the Office of Management and Budget (OMB).

EPA is requesting comments on the proposed Information Collection Request, including the associated burden estimate, but is NOT requesting completion of questionnaires at this time. The proposed ICR will be open for public comment for 60 days following publication in the Federal Register.

Here is the link for more information on the EPA website

Catch us at these storm water trade shows

Meet us in Beacon, New York
9th Annual storm water conference and trade show
Dutchess Manor, Beacon, NY

Date: Wednesday, October 14, 2009

We will be showcasing:
TerreKleen Hydrodynamic separator - water quality treatment vault
TerreArch - storm water infiltration units
TerreBox - storm water detention system with a patent pending water-tight seal

Great speakers, keep current and excellent networking opportunities

Click here for the details

10 compelling reasons to consider TerreKlean Hydrodynamic Separator / Water Quality Treatment Vault

We are scheduled to participate in numerous stormwater trade shows coming up in October and are excited to be showcasing one of the newest products in our line, the TerreKlean Hydrodynamic Separator / Water Quality Treatment Vault.

The summer was spent meeting with and demonstrating this system to local civil engineering firms and these is a lot about this system that appeals to our clients:

1. NJCAT and NYS DEC approved (and more)
2. HS-25 load rated
3. Easy installation
4. Easy clean out and no confined space entry needed
5. Acts as oil/water separator
6. Can be used in line
7. Lines can tie in at the 6, 9 or 12 o'clock position
8. No external bypass - all water is treated
9. Can be used as the last catch basin in your line
10. No scour or re-suspension of collected material
    

Inclined plate technology maximizes the sedimentation surface area
in a minimal footprint.

We also have the ability to do some customization to meet your project's needs.

And that is not all! So, if you are looking to improve water quality with a
water quality treatment vault / hydrodynamic separator,
contact us, this may be an ideal option for your project.

Beach closings due to stormwater pollution

The sign says:

"This area is subject to bacterial contamination after rainstorms. All bathers and surfers are advised to stay out of the area after rainstorms due to potential health risks.
This area is permanently closed to shellfish harvesting"

Did you know that stormwater pollution was the major cause for 20,000 US beach closing days in 2008?

Find out about your beach in the recently published "Testing the Waters" - the NRDC report that details the beach closures in 2008.
Report is in PDF format.

Homes pollute 50% more than previously thought

This was an interesting article. Findings of a recent study investigating water pollution generated at home were published today on Eurekalert.org. Results of the study show pollution levels to be at least 50% higher than previously thought. Here is a link to the actual article, and reprinted below:


Contact: Michael Bernstein
m_bernstein@acs.org
202-872-6042
American Chemical Society

Homes pollute: Linked to 50 percent more water pollution than previously believed

		IMAGE: Polluted runoff originates from several sources, and has been linked to fish kills and a loss of aquatic species diversity. A new study suggests current runoff models may underestimate pollution... Click here for more information.

WASHINGTON, Aug. 19, 2009 — They say there's no place like home. But scientists are reporting some unsettling news about homes in the residential areas of California. The typical house there — and probably elsewhere in the country — is an alarming and probably underestimated source of water pollution, according to a new study reported today at the 238th National Meeting of the American Chemical Society.

In the study, Lorence Oki, Darren Haver and colleagues explain that runoff results from rainfall and watering of lawns and gardens, which winds up in municipal storm drains. The runoff washes fertilizers, pesticides and other contaminants into storm drains, and they eventually appear in rivers, lakes and other bodies of water.

"Results from our sampling and monitoring study revealed high detection frequencies of pollutants such as pesticides and pathogen indicators at all sites," Oki says of their study of eight residential areas in Sacramento and Orange Counties in California.

Preliminary results of the study suggest that current models may underestimate the amount of pollution contributed by homes by up to 50 percent. That's because past estimates focused on rain-based runoff during the wet season. "Use of pesticides, however, increases noticeably during the dry season due to gardening, and our data contains greater resolution than previous studies," Oki says.

Pollutants detected in outdoor runoff included ant-control pesticide products. Previous surveys have shown that the majority of pesticides purchased by homeowners are used to control ants. To encourage pollutant reduction, the researchers initiated community outreach programs centered on improving both irrigation control and pest management.