Posts Tagged ‘epa’

Tier 4 EPA Compliant Engines; The Who, What & When

November 12, 2010 6 comments

Engines used in virtually every piece of heavy construction equipment is changing as the U.S. Environmental Protection Agency’s (EPA) Jan. 1, 2011, deadline approaches for Tier 4 Interim (Tier 4i) compliance on engines of more than 130kW (174 hp).

What does this mean for you and how will it affect your business and equipment use?  We will defer to our friends over at Rental Management who put together an article written by Jim Robinson to try to help clear the mud.

Engine manufacturers have spent the past several years developing new technologies to meet the new mandates and many have introduced Tier 4i/Stage IIIB compliant engines, a step to a final Tier 4 level requiring that engines emit 90 percent less particulate matter (PM) and 50 percent less nitrogen oxides (NOx) than Tier 3 engines.

There are two main technologies that engine manufacturers have adopted to reach Tier 4i compliance.

One of the technologies used by manufacturers is selective catalytic reduction (SCR). When an engine is adjusted for maximum efficiency, high combustion temperatures will reduce PM levels but increase NOx levels. SCR is an after-treatment system that cinjects diesel exhaust fluid (DEF), a mixture of urea — an organic compound — and water into the exhaust stream to create a chemical reaction that transforms the NOx into nitrogen and water.

Manufacturers in favor of using SCR say that because the combustion process on an SCR engine is efficient, the fuel consumption is reduced and the after-treatment system allows the engine to be very high performance. They say the simple design of the SCR system allows it to be very efficient and provide the same torque and power at the same displacement, which critics of cooled exhaust gas recirculation (CEGR) say is not possible with that technology.

The second major technology used to reach Tier 4i compliance is cooled exhaust gas recirculation (CEGR), which is a method for reducing NOx levels. A CEGR system recirculates exhaust gases, blends them with fresh air and returns the blend to the cylinder. This makes for lower combustion temperatures, which reduces NOx, but also will mean higher PM levels than those produced by a hotter burning engine. That means an after-treatment exhaust filter system is needed to lower the PM levels. This particulate filter is coated with a catalyst so that hot exhaust can burn off particulate matter, releasing carbon dioxide.

With a CEGR system the basic engine technology remains the same, there is no additive required and the system doesn’t require any change in the way the equipment is operated, but the particulate filter will require attention. “The CEGR system’s diesel particulate filter requires periodic regeneration that will vary depending on engine load. The filter offers a long life — more than 1,000 hours — but requires eventual replacement,” says Case’s Stemper.

How much can you expect equipment costs to go up or change with Tier 4 regulations? 

When the EPA developed the Tier 4 regulations, it estimated the increase would be 1 to 3 percent of the total equipment price, so the cost of a $13,000 piece of equipment would rise by $760 and the cost of a $235,000 piece would rise by $2,590. Caterpillar recently announced that prices on its equipment would increase by 2 to 6 percent next year in order to pay for the development and production of the new emissions technologies.

Full Article from What Tier 4 Means To You

Categories: Equipment, News

EPA Requiring Additional Certifications For Contractors

April 15, 2010 Leave a comment

Contractors working on houses built before 1978 be prepared to add $550 to bids, so you can obtain proper certification.  Or prepair yourself for a heafty fine! [full story]

Beginning on April 22, the EPA is requiring additional certifications for contractors who work on houses built before 1978. According to the Eastern Home Builders Association, the new EPA rules are aimed at preventing lead poisoning and will apply to remodeling crews, carpenters, plumbers, window installers and heating and air conditioning crews.

The additional certification will be required of any company wishing to legally work on older homes. Violators could face EPA fines of as much as $37,500 per violation.

Construction workers will have to pay about $550 to obtain the certification, in addition to filing extra paperwork and abiding by new rules designed to prevent the spread of paint dust.

Categories: Construction, News

New Rule For Lead-Paint Safety Adds To Contractors Plans

April 12, 2010 1 comment

Construction industry to help prevent lead poisoning cases among children under [new rule].

After almost two decades of delays, the Environmental Protection Agency said it was on track to implement a regulation requiring the construction industry to help prevent cases of lead poisoning among children.

The agency said it expected more than 125,000 renovation and remodeling contractors to be trained and certified in lead-safe work practices by April 22, when the new regulation takes effect.

Under the rule, workers would have to take steps such as containing their work area with plastic and conducting a thorough cleanup of lead-paint dust stirred up during construction activity, which federal officials say is partly to blame for about 120,000 cases of elevated lead levels in children younger than 6 each year.

Congress passed legislation in 1992 directing the EPA to propose the regulation, but the agency did not finish the rule until 2008, after environmental and public interest groups filed a lawsuit to pressure the agency to issue it.

Categories: Construction, News

Going Green? Ferris IS3100 Propane Mower

January 27, 2010 236 comments

Landscapers: Get A Leg Up On Your Competition. 

Landscapers have you been thinking about going green? Maybe you have some clients that have started asking you about alternative fuels.          

We have a few of our landscape customers that have told us, that some jobs they are bidding will only accept bids from companies that can do the job with “greener” equipment.          

Here is an option to help you get those customers: The Ferris IS3100 Propane Zero Turn Mower         

Ferris Propane Mower; Going Green

Ferris IS3100ZPBV3261

Print a Brochure         

Now we are not saying you need to come to Aztec Rental right now and change you entire fleet out to Propane powered units (although we would greatly appreciate it).  What we are saying is that you might want to think about getting at least one for your fleet, so you have a leg up on your competition.    

How does it get you ahead? I am sure you can think of some reasons, but here are 4 simple ones:   

1) You will be able to bid on those jobs that are requiring “greener” equipment   

2) You can advertise that you are doing your part and have “green” equipment, which can be very attractive to some clients.     

3) Some of you may know,  but many cities have “Ozone Action Days” which bans the use of gasoline fueled commercial mowers before 1:00 P.M.  Your company might have fallen victim to this and your business has been shut down during this time. The Ferris propane powered IS® 3100ZP meets all emission requirements by the Environmental Protection Agency, and will keep you operational during “Ozone Action Days.”         

4) As we all know there is always talk about more EPA “standards” or “greener” requirements being put into action, so be a ahead of the game and think about instituting a propane powered unit into your fleet.       

There is also a bonus benifit for those of you in Texas.  I am not sure how many other states are doing this but worth the research to find out.  Texas Clean Cities is offering rebates to landscapers who purchase propane powered lawn mowers.  The rebate can reach as much as $2,500 per unit.  Think of the savings this gives you on the purchase price of one of these units. 

Commercial Propane Mower – [guidelines]
Commercial Propane Mower Rebates – [ Frequently Asked Questions

Ferris propane power mowers paired with Ferris’ patented suspension technology, with all of the benefits we just mentioned makes this machine a very attractive package!     


  •  895cc Vanguard BIG BLOCK V-Twin, which is only engine the industry that is designed specifically for propane use. The Briggs Big Block is a total dedicated propane engine with specially hardened valves to with stand the higher octain of propane fuel.
  •  Vanguard™ BIG BLOCK™ engines are designed to meet the proposed 2012 EPA emission standards.
  •  This Propane engine produces 30% fewer smog forming emissions.
  •  Carburetor designed specifically for Propane use
  •  Fuel system designed to conform to NFPA 58 – 2002
  • Vanguard™ BIG BLOCK™ quality and durability with 2-year commercial warranty
  •  Provides automotive-like starting with NO need for a choke lever, with Ready Start™ technology
  •  Specially designed with Vapor withdrawal fuel tanks to insure consistent and hassle free operation, superior to Liquid withdrawal systems
  •  Fans mounted on top of hydro pumps assist in cooling of pump and repelling debris.
  •  Easy access oil drain for ease of maintenance.


[Ferris Independent Suspension System] 
[Ferris Productivity Calculator] 
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Categories: Ferris Mowers, Landscaping