TerreKleen hydrodynamic separator installed at Eastchester DPW Yard - TK27

All of the action started at about 
9:00 AM yesterday morning 
at the Eastchester, NY DPW yard.  Here is the 
TerreKleen ready for installation.

The hole where the TerreKleen is being
 installed is already prepared.

This is the base which installed quickly.
The white pipes and red hose
are the manifold system.  Confined Space
Entry is NOT required on the TerreKleen.  This
will mean a significant short and long term
cost savings.

 

This is the mid-section.  Tight installation
since the TerreKleen had to fit right up
against the outlet pipe.  The left
side of the unit is the primary chamber
where large sediments, trash and oil
will be contained.  The plates on
the right side of this picture shows
the stacked inclined plates where
small sediments will settle out.

The riser is on in no time.

The top stacks in no time.
Total installation time:  approximately 1 hour.

Current stormwater projects and applications

Was thinking back over the past year and about the projects that we have worked on and what is ahead.  Just thought this was interesting to consider what types of projects we work on, their diversity and why our clients choose our systems.  These were just a few that came to mind.


TerreKleen - hydrodynamic separator
Probably one of the most unique projects we worked on was for a condo complex in New York.  This client needed a hydrodynamic separator to be installed in their existing parking structure.  Since there was no room for a crane, we built the whole unit from marine grade aluminum and put it in place.  Since this condo complex was located in an urban area, they really were concerned about losing parking availability.  Our unit fit in nicely into their parking garage and at the most, they only lost 1 parking spot.  (I believe if one drove a very small car they could still fit in the spot)
TerreKleen offers a lot of flexibility.  We design to meet the goals of your project (you do not need to design your project to meet the goals of the TerreKleen)


TerreBox - stormwater detention / rain harvesting system
One project that we are currently working on is for a University.  They are going to be re-developing part of their campus and in going for LEED Gold, they are planning the installation of a geo-thermal heating system as well as and capturing all roof runoff for re-use.  The TerreBox is a natural solution in this application.  

1. TerreBox is a modular system, so the client can easily design the storage they need.  
2. As a system that installs quickly and is HS-25 load rated, TerreBox is well suited for a site where large infrastructure/major buildings are going up.
3. Work on the rest of the site will be able to continue with minimal interruption.  
4. TerreBox offers a patented water-tight seal.  This will prevent the roof runoff from contaminating the geo-thermal system.

TerreArch - stormwater infiltration - patented stormwater arch system

A major portion of projects we see need infiltration.  Another school project that we are working on is re-developing their parking lots.  Part of their plans include the installation of two infiltration bays.  Our systems will fit well in this application because:

1. Our systems arrive on-site as HS-25 load rated.  They are not dependent on work crews to achieve the HS-25 load rating.  They are built to easily handle the bus, truck, car traffic at a busy school facility.
2. TerreArch arrives just in time - there is no need for storage, staging, re-staging and there are no small parts to put together, break or lose.
3. TerreArch installs quickly - the contractor can install, backfill and cover up to 50,000 cubic feet of stormwater storage in one day.  Work on the rest of the site can continue with minimal interruption.
4. Available as 26" or 48" arches, it is easy to design and install these systems.

Stormwater Cleanout - Confined Space Entry NOT REQUIRED

When we talk about stormwater with our clients, one of the most important things we discuss about is The "M" Word... MAINTENANCE.  Since we know how time and money intensive maintenance of stormwater systems can be, we try to recommend the most effective stormwater solution with the least maintenance required.


In early January we had installed our second TerreKleen hydodynamic separator in Waccabuc in Westchester County, NY.  The first unit had been installed in September.  Since we have had lots of snow here in the Northeast this Winter, the first unit was buried in a snow bank, but we were able to "pop the lids" and see how the system was working:

Even though there is snow all over up-top, you can see
once we "popped the lids" that the water is still flowing
through the unit.  See trash and debris that has been
collected in the primary chamber.

 

This is a picture of the secondary chamber.  You can see
the plates where finer sediment settles out.  See the red hose?
The red hose clips to the top of the unit.  The vac truck
operator can energize our manifold system at the bottom
of the unit to re-suspend the sludge blanket.
CONFINED SPACE ENTRY NOT NEEDED for cleanout.

TerreKleen 02 installed to capture sediment and improve stormwater runoff

A GREAT KICK-OFF FOR 2011!  Even though it was a bit cold, it was a great day to be outside and see our first Terre Kleen hydrodynamic separator of 2011 installed!


We are on-site at 7:00 AM and the trucker has already arrived.  TerreKleen arrives pre-assembled and ready to install.  This makes installation easy.  

TerreKleen is quickly off the truck and installing in the hole the contractor has prepared.

The conseal (black strip) is quickly applied.  We are now ready to install the riser section.

Riser is being installed

TerreKleen installed!!!

The primary contaminant at this site is sediment.  The TK02 is a smaller TerreKleen unit.  The size of the TerreKleen for each site is chosen based on flow rates and the sediment particle size that client needs to capture.  After pipes are connected and manhole covers put in place, TerreKleen will be fully functioning and will immediately start to work.

TerreKleen hydrodynamic separator approved by The MDC - Hartford, CT

Attention: 

Engineers, Contractors and Owners in

Bloomfield, East Hartford, Hartford, Newington, Rocky Hill, West Hartford, Wethersfield and Windsor, CT! 

The TerreKleen hydrodynamic separator has been approved by The MDC for use in projects located within the MDC's jurisdiction.  Here is a link to their confirmation letter.

TerreKleen will capture sediment, trash, debris, oils, it installs quickly and there is no scour or re-suspension of collected material.  Cleanout is easy and does not require confined space entry.  This is a significant short and long-term savings.

Let us know if we can assist with any design and sizing issues!

.

TerreKleen hydrodynamic separator now improving stormwater runoff at Waccabuc, NY

It was a beautiful day in Waccabuc, Westchester County, NY.  Getting the TerreKleen installed at this site has been a long term project and finally, this past Thursday was the day.  The day of our first of two installations at this site.   We arrived at about 8 AM and the TerreKleen was already on site.

The installation site was right on the edge of a large open field.   Here is a picture of the hole that has been prepared for installation.  The contractor had done a lot of work prepping the installation site the day prior so for the most part, upon arrival, the unit is ready to be installed.  

Contractor makes some final checks and adjustments, re-confirms the gravel bed is level and cleans out some mud that has accumulated overnight.  When everything is confirmed ready for installation, the TerreKleen is lifted off the truck and manipulated into place.

Here is the TerreKleen getting installed into place.  A crane easily lifts the unit into place.  The TerreKleen arrives fully assembled eliminating any additional work that needs to be done on site.

Here is the riser getting installed.  Again, it is a very easy operation - the crane simply lifts the riser and installs it on top of the base of the TerreKleen.  

TerreKleens install quickly as they are designed to assemble on-site with each section manufactured to fit on top of each other.

In about an hour, the TerreKleen is installed and ready to work.  It will remove sediments, trash, debris and oils.

For more information about the TerreKleen or if we can assist you with information about hydrodynamic separators, please contact us at www.stormwaterworks.com

Improving Stormwater runoff at the Ausable River, Wilmington, NY (Part 2)

Wanted to post a few last pictures so you can see how the installation was completed:

Off the truck, the crane is moving the TerreKleen into position.

Easy does it!  TerreKleen is gently lowered into the hole

Most difficult part of installation complete

Primary chamber on right, inclined plates on left

Improving Stormwater runoff at Ausable River, in a NYS DOT right of way- 3 part post

Wilmington, NY.  The Ausable River in the Adirondack Mountains in upstate New York is known for its world-class trout fishing.

This is the site of our first TerreKleen hydrodynamic separator installation in upstate NY.  The TerreKleen hydrodynamic separator is being installed to capture sediment, trash, oils and debris and prevent its flow into the Ausable River.  

This project is a collaborative effort between Essex County Soil and Water Conservation District and NYSDOT.  The installation of the TerreKleen is in a NYSDOT right of way.

This is a picture of the Ausable River from the site.

Difficult installation site conditions include:
Re-routing traffic on this section of Route 86 until installation complete, small site footprint, excessive low hanging power lines. 

(This is a 3 part post click on stormwaterworks banner at top of page to view additional 2 postings)

This is a look at sediment on this site.

This is an overview of the site as the TerreKleen 
arrives.  This part of Route 86 has been closed for installation.

Improving Stormwater at N. Lake Carmel with a second installation of the TerreKleen

All Equipment in the shoulder

Very Tight Work Area

It has been an exciting August with our second TerreKleen installation at North Lake Carmel, NY.  Again, the worksite is incredibly small.  All of the heavy duty earth moving equipment barely fits in the road shoulder.  It is important to keep the traffic moving. 

TK09 - 9 cells for particle separation

Don't blink!  (Left) 
The TerreKleen is in place before you know it!  

This is the picture of a smallest TerreKleen unit, the TerreKleen09.  

The 09 represents the number of cells created by the stacked inclined plates for particle separation.  This unit will capture sediment, trash, debris and oils.  

Confirming the TK09 is level

Next step... 

double checking that the TerreKleen has been installed and is level in the hole.

It is important that the gravel in the bottom of the hole provides a level surface for the TerreKleen to sit on.

The crane is moves the lid onto the open TerreKleen.  The top is designed to fit on top of the open TerreKleen.  It takes just a few minutes until the lid is in place.

The installation is complete.  In less than an hour, the large equipment is leaving the site and the TerreKleen is in place ready to do its job. 

Hydrodynamic Separator - TerreKleen 45 is now capturing sediment, trash and debris at N. Lake Carmel, NY

This was a very exciting day!  The effectiveness of the TerreKleen hydrodynamic separator for capturing sediment, trash and debris is well known and these units are widely used in VA, MD, PA, NJ and DE.  As the representative for TerreHill Stormwater Systems in New York and New England, Stormwaterworks.com was  thrilled to see our first installation of a TerreKleen in New York State!  What made this day even more exciting is that the unit is a TK45 - the largest unit we have ever seen installed.

 This is a picture of the jobsite.  The N. Lake Carmel community is mainly residential, however, there is A LOT of traffic.  I took this picture to give you an idea of how small the work area is.  A shoring box is hidden behind the orange netting - this is where the TerreKleen is going to be installed.

This picture is looking down into the hole that has been dug for the TerreKleen.  It is important that the gravel in the bottom is level.  Since this is a lakeside community, there is a high water table and you can see that some mud has creeped into the hole.  The mud will be cleaned before the TerreKleen is positioned in place.

 

 This image shows the base of the TerreKleen as it is being maneuvered into place.  It just takes the crane operator a few minutes to lift the base off the flatbed truck and position the base in the hole.  

This is the base of the TerreKleen.  You can see the manifold system (white bars and red hose on the left side of the unit) are designed to assist in cleaning the unit.  Notice the white socks on the right side of the unit designed to collect oil.

Next, the middle section or "riser", is positioned into place with the crane.  This picture shows the stacked inclined plates on the left side of the unit.  This is where all of the fine particle separation takes place.  Stacked inclined plate technology was developed in 1905 and has been widely used in the drinking water industry around the world ever since.  The Terrekleen merely adapts this proven technology and widely accepted engineering practice for the storm water industry.  The riser is made to fit ontop of the base.  It takes just a few minutes to get this piece into place.

The lid is placed on top of the TerreKleen.  This lid incorporates 3 manhole covers for cleanout as well as a catch basin grate.  This unit will function as the last catch basin in the line and will provide 3 other access points to aid in cleanout.

This TerreKleen unit was installed in about an hour.  The TerreKleen will contain trash, oil and sediments until the units are cleaned out.  No scour or re-suspension of collected material happens because of the design of the TerreKleen.

Stay tuned - we have an additional installation in North Lake Carmel that will be posting shortly.  We are excited to help keep North Lake Carmel clean!

TerreKleen Hydrodynamic Separator installation in Kent, NY at N. Lake Carmel this week!

Coming up this week... the installation of a TerreKleen TK45 hydrodynamic separator in Kent, NY at North Lake Carmel!  Took the day Friday to visit the installation site in Kent, NY.  

The TerreKleen being installed is going to capture trash, sediment, oils, and prevent them from traveling into North Lake Carmel.    

TK45 is capable of treating large flows and will improve the water quality that flows into North Lake Carmel.  Stay tuned for installation pictures later this week!

TerreKleen Hydrodynamic Separator (water quality treatment vault) Inspection

Wow - what a great week!  We had our first post installation inspection of the TerreKleen hydrodynamic separators that we installed in Stamford back in November.  I thought these pictures quickly and easily tell the whole story:

The first picture shows the trash that is contained in the TerreKleen.  This trash will be trapped here until these units are maintained/cleaned out.

With trash and debris trapped in the primary chamber of the TerreKleen, this second picture shows the "working" section of the unit.  Stormwater  travels through a screen and onto

the stacked inclined plates (you can see the plates on the right side of the picture).  These plates help smaller sediments fall out.

The TerreKleen design is based on solid engineering principals developed by Allen Hazen in 1905.  This technology was developed to separate sediments from water in the drinking water industry.  The effectiveness of stacked inclined plates (Lamella plates) is well known and recognized as more than 100 years later, this technology is still widely used for sediment separation in the drinking water industry.  The TerreKleen has simply adapted this technology to efficiently separate sediments from storm water runoff.

Here is brief information about Allen Hazen , his education at MIT, his career, contributions and impact on the water industry.  Here is a link to some of his published works.

Another benefit to this client? TerreKleen maintenance / cleanout will NOT require confined space entry!

It feels good to know that this trash has been prevented from littering Long Island Sound this summer.

If you have questions about the TerreKleen, hydrodynamic separation, particle size distribution, trash control or stacked inclined (Lamella) plates, feel free to give us a call!