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PZS Stabilization logo




PO Box 440 A
St. Helena
CA., 94574
United States
(707) 287-6111
(707) 968-5121
Bruce Coulthard

Where Science & Agriculture Come Together

We are a full service company that provides our customers with Solutions to the various soils and conditions that each site presents. We are a Solution Provider with products that are not an all in one solution, each condition requires a selection of the correct product and application. Many seem to believe that one product fits all, unfortunately that has been proven to be untrue.

Our company evaluates soils, aggregate, vehicle loads and vehicle passes as well as weather and intended use to define the appropriate selection of product and rates of application.

PZS Stabilization's application division ensures the proper protocols are followed to ensure success.

Our customers range from the United States to Canada, Latin America and beyond all with very differing soils and load conditions. We are able to match the correct product and application rates to the existing soil conditions. We have taken this concept well beyond the normal and are able to manufacture a site specific chemistry to match the soils and conditions. This is unheard of in the industry as many companies are bound to their patents or available components that are linear in the broad spectrum of use.


We believe in success one customer at a time.

For more information, please visit:


News Archive

Dust Control on Agricultural Roads Is Now!
09 May, 2017

Several options to fit your specific issues, short term, midterm or long term control, call us for pricing.

Why use mag-chloride for dust control if you care about the environment?
25 April, 2017

Have you ever traveled down a Colorado mountain road and noticed along the roadsides there seems to be a considerable amount of trees that look sick and dying? If so, you may be seeing vegetation being adversely affected by magnesium chloride.

Magnesium chloride is commonly used as a dust suppressant agent on unpaved roads in the western parts of the United States during the spring and summer. Likewise, magnesium chloride is used extensively for deicing/anti-icing on paved roads during the winter. Magnesium chloride is often used as a dust control agent since it is hygroscopic and deliquescent -- it has the ability to absorb moisture from the humid air. This absorbed moisture helps limit dust by keeping the surface of the road damp enough to hold the dust particles down and reduces blow-off as fugitive dust.

A primary reason why magnesium chloride is used in relatively high quantities in the Western United States is because the source is geographically local. The salty waters of the Great Salt Lake of Utah is a major source of magnesium chloride.

Although magnesium chloride is considered to be less expensive than other dust control agents, the potential negative impact of using salt may outweigh any positive aspects. There are numerous reasons why using magnesium chloride is less than desirable for dust control on unpaved roads. These include:

  • The unpaved road may become slippery when wet if clays are present
  • The unpaved road can becoming a sloppy mess during spring thaw
  • The magnesium chloride washes off readily with rain/snow melt
  • Repetitive applications may be required to control dust
  • Potential to leach chloride into shallow drinking water wells
  • Doesn’t work well in low humid conditions
  • Magnesium chloride is very corrosive especially if the salt is more concentrated
  • Attracts wildlife to roads for the salt and create driving hazards
  • Recognized to be harmful to important road side vegetation

As stated, there are numerous negatives when using magnesium chloride for dust control

however, this discussion will focus on the salts impact on roadside vegetation.

It has long been recognized that another salt product, sodium chloride, when used for deicing

purposes has negative impacts on road side vegetation. The effect of salts on roadside soils and

vegetation are well documented. Likewise, it has also been found that unpaved roadsidevegetation impacted from magnesium and/or calcium chlorides applied for dust control

purposes have demonstrated similar symptoms to those as sodium chloride. Even though magnesium chloride is extensively used for deicing purposes, the potential impacts of the salt on roadside soils and vegetation may be much greater when used as dust control agents.

The major differences are that deicing applications are mainly done during the wintery months on paved roads, while dust control is done during the spring and summer months on unpaved roads. The timing of the dust control applications will impact the roadside vegetation differently since they are actively growing and transpiring. Also the absence of snow melt during the dust control season greatly effects the concentration and dilution of the soil salts when compared to deicers. This reduced dilution help keeps the magnesium chloride from washing far downstream with meltwater but enhances downward leaching into the soil therefore increasing the impacts on nearby vegetation.

Magnesium chloride is a simple compound composed of two essential nutrients both required for plant growth, however too much of either magnesium or chloride can harm a plant. Although chloride is an essential nutrient, only very small amounts are beneficial to plants. The chloride is considered do more harm to vegetation than the magnesium.

When magnesium chloride is used for dust control the pathway for chlorides to vegetation is washing/leaching off a road (mainly downslope) into the soils with rainwater or snow melt. A study done by Colorado State University has documented elevated salt concentrations between 9-foot and 320-feet from roads.

Once the chloride gets into the soil it can be taken up by plant roots. When the chloride gets into a plant, it moves up the water-conducting system and accumulates at the margins of leaves or conifer needles. This is where die-back occurs first. At high chloride concentrations, damaged trees may be evident after two years of treatment.

The notable effects that chloride has on vegetation include leaf scorching, marginal necrosis, and needle tip burn. High concentrations of chlorides in soil can affect plant growth and survival both indirectly and directly. At lower chloride concentrations, a reduction in plant growth may be due to osmotic effects that disrupts normal water and nutrient uptake. At high concentrations, chlorides can accumulate at the margins of transpiring leaves or the tips of needles which can cause foliar necrosis and leaf abscission through dehydration and/or specific metabolic disruptions. These could lead to branch and tree die-back. Usual symptoms appear as browning of the leaves beginning at the tip or margin of the leaf and advancement towards the base. The higher the chloride content the greater length of the leaves are injured. In addition, during dry conditions, water stress and dehydration may aggravate chloride toxicity and cause even more extensive damage.

Research has shown that injury can occur when the needle/leaf chloride content reaches 5,000-ppm (dry weight) in conifer trees and 10,000-ppm to deciduous species. This may sound like a lot of chloride but it may not be on a roadside that was treated with magnesium chloride. For example, if you apply ½-gallon of a 30% solution of a magnesium chloride solution, you are applying approximately 1.2-pounds or 544,311 milligrams of chloride per square yard of road. The amount of chloride is staggering when a typical one-time application of magnesium chloride may contribute 11,358 pounds of chloride per mile on a 16’ wide road! Obviously roads treated more than once a year will greatly increase the chloride concentration. And since magnesium chloride is highly water soluble, 54,200 milligrams per liter, it is easy to understand why it can leach and run-off a treated road so easily.

While the ease of availability and the lower cost of magnesium chloride maybe attractive, the long-term environmental impact is significant. Products such as Earthbind® 100 for dust control can significantly reduce dust from unpaved roads while being environmentally friendly. Earthbind, once cured, is not water-soluble and stays in the road bed and can improve the road base with each application. For more information on how you can control dust without killing roadside vegetation, visit

EarthBind Technology Used the World over with Superior Results in All Industries
06 April, 2017

Earthbind® is a unique and environmentally-friendly product specifically engineered to be a quality and effective dust suppressant. Earthbind® is considered to be a biopolymer modified bitumen emulsion. Earthbind® is made by EnviRoad® LLC, an ISO 9001:2008 certified company. Earthbind® is manufactured in Portland, Oregon U.S.A. Earthbind® is effective as a dust suppressant on many types of soils/aggregates. The main competitors of Earthbind® are the salts, lignosulfonates, synthetic polymers, mineral/paraffinic oils, petroleum resin, and traditional asphalt cutbacks/emulsions.

This document is a brief description regarding how Earthbind® differentiates from its competitors.

Agricultural Secondary Road Stabilization
10 March, 2017

Schedule Spring Erosion and Dust Control applications, get a jump on year around control!  New waterway siltation and worker safety rules in California get ahead of it!

Controlling your silt runoff and dust is simply the right thing to do!

Global Stabilization Introduces Anti-Icing Alternative: Global-PPE
09 November, 2016

Our Global-PPE product is a Calcium Chloride base with proprietary components developed by an internationally recognized expert associated with the Pacific Northwest Snow Fighters Association, and manufactured at our computerized ISO Certified facility in Portland Oregon. The components are all extremely high grade to achieve our high level of environmental compliance and performance. Most competing products are low grade and very cheap that will not last as long as our Global-PPE or consider the environment as we do at Global Stabilization. We have taken the approach to produce an Anti-Icing product that follows our commitment to the environment and our customer’s financial wellbeing!

The application rates are all weather dependent, the Global-PPE Anti-Icing approach will use 75% less than a DE-Icing approach after snow and ice has formed. Basic recommendations as an Anti-Ice are 50 gallons of Global-PPE per acre. Some situations may require multiple applications per season, however we have found that Global-PPE will go farther than other Icing products. Global-PPE is applied in a non-dilute application and is dark in color.

When used in mining conditions at high altitude it will allow for year around icing protection. The added benefits due to our inert ingredients is it is also a dust palliative! The PPE will remain in the surface and provide for dust control of the haul roads. This is an important consideration in cold temperature dust abatement due to water freezing and then icing to make the surface even more dangerous.

We also have found that using Global-PPE in industrial and non-industrial, (communities) such as ski resorts or private communities the slip and fall accidents will be reduced significantly due to the longevity of the applications performance.

The snow removal maintenance frequencies are also significantly reduced, leading to additional financial add backs to the snow removal budgets.

Global-PPE is available in 5-gallon, 1000-1200 liter totes, 5000-20,000 truck/ bulk rail tankers.

Erosion control of agricultural roads before winter rains with Earthbind-100 and Earthbind Stabilizer
30 September, 2016

Simply grade your roads and apply our EarthBind™ to the surface to control dust and erosion. Keep your sediment out of the waterways!


Do You the Grower Know About This?
11 August, 2016

The new best practices act will most likely be implemented in time, and for all the reasons. The fine dust particulates from watering roads instead of stabilizing the roads contributes significantly to the silt ending up in our waterways.

TENTATIVE ORDER NO. R2-2016-XXXX: General Waste Discharge Requirements for Vineyard Properties in the Napa River and Sonoma Creek Watersheds

We have already implemented our EarthBind Products into the US Railway system as they were concerned with runoff in order to comply with their SWPP guidelines, as well as mining operations worldwide, etc.

The cost to stabilize ag roads is only in the $15-$20 cents per square foot for product, delivery and application by our PZS Stabilization, and less expensive if the farmer applies it himself with our bolt on spray bars to water trucks.

This is a very important time for all farming entities to be proactive, the cost is much less than one would think using our EarthBind Products, as they build inventory through time not wash away.





Too Much Dust in Your Vineyard? You Need EarthBind-100
28 July, 2016

Earthbind™ 100 is a quality, versatile and environmentally-friendly modified biopolymer dust control agent. Earthbind™ 100 was developed to meet the need for a quality and environmentally-friendly product that can be safely stored and easily applied. Earthbind™ 100 is applied to successfully combat fugitive dust and stabilize the road surface on many different types of unpaved, low-volume roads, parking lots, railroad yards, etc., throughout industrial, mining, military, private and public market sectors.

Ask us about our spray bars that bolt to your onsite water trucks allowing for agricultural operations to apply dust control internally on demand when needed saving additional application costs.



EnviRoad® Receives ISO 9001:2008 Certification
06 June, 2016

Portland, OR June 2, 2016– EnviRoad®, LLC announced today the company has been awarded the distinction of ISO 9001:2008 certification. This is a benediction of the company’s ever increasing commitment to providing customers with the highest levels of quality road emulsion products. EnviRoad’s ISO 9001:2008 certification was received from IMSM, Inc.

The ISO 9001:2008 certification confirms that EnviRoad has met all the ISO standards and requirements for the company’s Quality Management System. Obtaining the ISO certification was a rigorous process that required months of preparation, reviews and audits. Achieving high levels of customer satisfaction and establishing processes for continuous improvement are important components of the ISO 9001:2008 certification process and align with the company’s commitment to excellence in the delivery of road emulsion products.

Jason Tindall, General Manager, remarked “For many years EnviRoad has worked to consistently provide our customers with excellent products and high levels of customer service. The distinction of ISO 9001:2008 certification substantiates our promise to deliver quality products. We are committed to continue to improve upon the delivery of services to our customers and exceed customer requirements and expectations.”

About ISO 9001:2008

The ISO 9001:2008 quality management standard was developed and published by the International Organization for Standardization (ISO) and establishes an effective quality management program for manufacturing and service companies.

About EnviRoad

EnviRoad is a privately held company that manufactures environmentally friendly road dust control, soil stabilization and rejuvenating asphalt products. Our proprietary blend and process produces high quality products that are efficient and cost-effective. EnviRoad is a member of IECA. For more information: Facebook: LinkedIn:


Too Much Dust in Your Vineyard? You Need EarthBind-100
31 May, 2016

Earthbind™ 100 is a quality, versatile and environmentally-friendly modified biopolymer dust control agent. Earthbind™ 100 was developed to meet the need for a quality and environmentally-friendly product that can be safely stored and easily applied. Earthbind™ 100 is applied to successfully combat fugitive dust and stabilize the road surface on many different types of unpaved, low-volume roads, parking lots, railroad yards, etc., throughout industrial, mining, military, private and public market sectors.

Ask us about our spray bars that bolt to your onsite water trucks allowing for agricultural operations to apply dust control internally on demand when needed saving additional application costs.


Get a Jump on Dust Season
16 May, 2016

Dust Season is here, get a jump on spring and summer protection from mites and fugitive dust particulates with EarthBind-100™ Starting applications now will provide yearlong protection. Ask us about our spray bars that bolt to your onsite water trucks allowing for agricultural operations to apply dust control internally on demand when needed saving additional application costs.

EarthBind®-100 for Dust Control in Agricultural Operations
01 April, 2016

Will not negatively impact plants, soils or waterways like Calcium and Magnesium Chlorides. Keep your agricultural crops free from plant desiccation when using EarthBind® Products! Visit us for more details,

Earthbind TM vs. Calcium and Magnesium Chlorides
When compared to calcium or magnesium chloride:
ï· Earthbind does not wash off with rain rainwater as the chlorides do.
ï· Earthbind is a binder that glues soil particles together. Earthbind is not hydroscopic therefore does
not require humidity to control dust as chlorides do.
ï· Earthbind does not get sloppy or slippery under wet conditions as the chlorides can.
ï· Earthbind requires 3 to 5 times less concentrated product on moderately traveled roads when
compared to chlorides.
ï· Earthbind is specifically formulated and manufactured to be a dust control palliative. It is not a byproduct or “waste” product such as chlorides.
ï· Earthbind weighs 23-28% less than calcium or magnesium chloride, reducing shipping costs and
storage requirements.
ï· Earthbind is formulated with surfactants which help break road surface tension, eliminating the
need to pre-water a road prior to application. Chlorides typically require a pre-water application.
ï· Earthbind is not considered to be corrosive. Chlorides are.
ï· Earthbind does not harm vegetation or impact surface or ground water such as calcium chloride
and magnesium chloride have been reported to do.
ï· Earthbind does not attract animals to the road. Some animals may be attracted to the salts in
chloride treated roads. Larger mammals attracted to a road can be traffic hazards.
ï· Earthbind can accumulate over several applications. Yearly maintenance applications require less
product because of this build up. Chlorides can wash off the surface.
ï· Earthbind makes a road water resistant. In humid regions, chlorides have been shown to cause
road material to hold water. A gravel or dirt road’s most typical problems are caused by water.
Typical problems include rutting, soft spots, depressions, and potholes.

Evergreen Solutions Inc. AGGRESOL- DCO- OMRI Certified Dust Control Agent
24 March, 2016

PZS Stabilization LLC is an exclusive distributor for Aggresol DCO, an environmentally benign dust control agent that actually works that will outperform any OMRI certified product on the market. We have completed two years of aggressive trials in the extreme duty mining industry and are satisfied we can assist agricultural entities with the same level of protection from fugitive dust and erosion.


AGGRESOL- DCO is incorporated into the top 1-2 inches of soils and aggregate at a 4:1 dilution rate.

Repair Rural and Secondary Roads for a Fraction of the Cost of Traditional Methods
23 February, 2016

Road builders are faced with shrinking state and federal budgets. Global Stabilization provides a cost effective alternative to traditional aggregate import and asphalt paving. Our solution: regenerate the existing aggregates and asphalt in place by mechanically injecting our Earthbind Stabilizer providing long lasting stability and dust control.

Grind it and Bind it with EarthBind



Global Stabilization is a Distributor of Environmentally Sensitive Road Building Products to reduce erosion and dust throughout the world.

Road Stabilization-Erosion Control-Dust Control
29 January, 2016

We are aware of the significant issues regarding dust control compliance for fugitive dust and erosion control measures and storm water protection plans in agricultural operations. Photosynthesis reduction and mite damage is also a real concern.

We have several application options available knowing that one size does not always fit due to different vehicle passes per day and the type of equipment crossing the treated roads.

Using an example of 1 mile x 12’ wide, 63,360 sq. feet/7040 sq. yards:


  • Aggregate roads 0.15 gallon/ sq. yard=1056 gallons topically applied after road grading and compaction at a 4:1 dilution rate. This will provide protection for 7000-9000 vehicle passes traveling 50 mph.




  • We provide a bolt on spray bar for water wagons or water trucks with the appropriate gallons per minute nozzles. The customer orders our EarthBind-100 in 330 gallon totes and applies per our recommendations. This method is very popular as well due to the amount of dust control and expenditures can be determined by the onsite manager when required.
  • Follow up maintenance when needed in high use areas can be performed on an as needed basis.


·         Our EarthBind Products are environmentally benign and are approved  by a long list of industries, states and countries:


·         We will be announcing our OMRI Certified dust control product February 15, 2016. After several years of trials in the extreme duty mining industry to ensure compliance and effectiveness we are now confident we can address the customers that require an OMRI product that actually works and lasts.


·         PZS Stabilization’s construction division can perform all levels of applications in the US and our Latin American division.


·         Maintenance applications must be in your overall cost benefit analysis and operations. Wear will occur and if maintained pro-actively, the base course will be protected and will continue to build in inventory. EarthBind products will not wash away they continue to build inventory and maintenance becomes less each year. UV and high heat increase the strength of the road surface and increases traction, unlike products that become slippery when wet.

·         In arid conditions we use a 25% annual maintenance number. If you apply 10,000 gallons, plan on an additional 2,500 gallons for annual maintenance. Year two and on you will not need the base course applications just the maintenance numbers.

PZS Stabilization LLC, is our construction company and Global Stabilization LLC, is our product sales company.

Aggregate is an expensive maintenance cost to replace, EarthBind Products lock the aggregate into place and virtually eliminates the need for continual import, grading and compaction with water. Those costs are substantial!

We are onsite for all training with new customers, to ensure our application protocols are adhered to for successful erosion and dust control.

I look forward to your reply!

Best regards,

Bruce Coulthard-President-COO

PZS Stabilization LLC.




OMRI Certified Extreme Duty Dust control Formulation
06 October, 2015

We have been asked for some six years for an ”Organically Certified Dust Control Product”. After two years of testing under extreme mining conditions we will be offering this to growers that are in dire need of a product that will last the entire season with minimal maintenance and water consumption! We will be making additional announcements over the winter and have this in place at all of our western US locations.

Finally an OMRI certified product that actually works!

For more information contact

Solving Dust Control Problems at Napa Valley Vineyard
21 September, 2015

PZS Stabilization appllies an environmentally friendly and cost-effective solution to solve the dust problem at Silver Oaks Cellars Vineyards on Atlas Peak in the Napa Valley.