Newport News: 20th Minnesota Sealant Ban Passed!

Posted in Uncategorized by Administrator on the May 22nd, 2012

banned coal tar
The City of Newport, Minnesota (population 3,435) became the 20th community in Minnesota to pass a ban of coal tar sealers. Last week’s passage of the ban was confirmed earlier today by Renee Helm, the Executive Analyst for Newport. The community is just a 15 minute drive to Minneapolis and is primarily residential.

The City is yet another suburban Minneapolis-St. Paul area community that has found it is better to stop the expensive contamination of area ponds by eliminating this product. The cost of the cleanup of these ponds has been estimated by the State of Minnesota to be more than a billion dollars.

Kudos to State Representative Bev Scalze who had the insight to create funding for a portion of the costs to clean up these ponds in Minnesota and to the staff at the Minnesota Pollution Control Agency (MPCA) for their insight on how to further the work of the USGS with a Minnesota context.

EPA Says it is more dangerous than we thought!

Posted in Uncategorized by Administrator on the April 1st, 2012

Based upon new research from the EPA which has been reviewed by an independent team of scientists, the cancer causing potency of coal tar sealants may be going up–a lot! How much? Over 800% higher!

Basically the report seeks to update our understanding of the carcinogenic potential of polycyclic aromatic hydrocarbon (PAH) mixtures like coal tar sealants and other solutions (oils, products, smoke, etc.). The EPA sent it out for a draft review in Feb 2010. In March 2011 a review by leading non-EPA scientists was completed on the validity of the findings. In general they found the assumptions and approach adequate, but asked for more research. How or if EPA will address these recommendations is unclear.

The EPA recommends the addition of 18 more PAH chemicals to the relative potency factor (RPF) calculation. Some of these chemicals are not widely tested for and it is difficult to say the impact on the RPF, but there is enough information to estimate a minimum potential increase. Contrary to what the sealant industry has said in public, these factors are going up. The EPA scientists find that PAH mixtures are more toxic than was believed to be when they were proposed in 1993.

My calculations indicate the RPF for an average coal tar sealant will increase at a minimum over 800% over current potency estimations with the real chance of going higher with additional information! That’s big. How would this affect human health and sealants? They maybe more likely to cause cancer than was previously estimated, but there are additional questions that the independent scientists asked the EPA that may affect the cancer potential of specific exposure types.

Do you have to go out to every job for an estimate?

Posted in Uncategorized by Administrator on the May 24th, 2009

Absolutely! Every job has its own special needs. We never give a blanket price for a neighborhood like some of our competition does because we want to make sure you know exactly what you will need to make sure your driveway will last as long as possible.

We believe in taking our time with each and every customer. Whether your drive way is 300,000 square feet or 500 square feet our customers are the most important. We intend to build relationships that will last a lifetime.

How soon in the season should I seal coat?

Posted in Uncategorized by Administrator on the May 6th, 2009

When is the best time to seal coat a drive way? That depends on where you are at in the county.

Here in the mid west we could start sealing as early as April. This year however, we are starting a little later because of our weather conditions. In order to get the optimum performance from your seal coating you MUST wait until the temperature outside is at least 50 degrees for 24 hours after application.

NO manufacturers of sealer will not honor any warranty if these conditions have not been met. West Suburban Asphalt stands behind ALL of their work. Call to ask about our guarantees we offer.