It is important that a proposed site receive adequate inspection and investigation to ensure that adequate drainage can be achieved over the life of the road.  Obviously, in some cases this will not be possible.  However, it is important that table drains be effective and culverts are installed where necessary.  Attention to the drainage has always been an important factor in any road construction, so it is with Endurazyme treated materials as well. 

It is also desirable to ensure that shoulders etc. are as free from vegetation as possible.  Plant life in shoulders serves as a conduit for water to enter into the soil matrix.  Again. this is not desirable.  While Endurazyme will work well against this ingression, common sense should always prevail and these details should be taken care of where and when possible.  Client engineers are always more than willing to work on these aspects of road construction. 

Sample Collection
Collecting samples of in situ material or indeed samples from gravel pits demands due diligence and care.  It is important that the sample taken is representative of the materials.  This in itself can prove a difficult task.  As mentioned earlier, materials consistency can vary quite considerably within a pit or over a road.  However, due to cost constraints it is not always economical or practical to take a sample every 100 metres or so.  We recommend that a sample be taken every 250 - 500 metres.  Visual inspection of material types can often show that there is no variance over long stretches.  In these instances one sample may suffice.  In order to carry out the tests described above it is important to acquire a sample of at least 40 Kg.  Using a pelican pick or a geology hammer, this is often a good opportunity to excavate the in situ material to ascertain the profile of the base, sub-base and/or sub-grade.  Investigative work at this stage can be very helpful in diagnosing problems that have occurred and may occur again if preventive action is not taken. 

Care of Samples
Soil samples should always be handled with care.  They should be stored in a suitable environment and they should be labeled and easily identifiable using a reference number system.
 Example:   CUB/YOR/T400M     could mean client name is Cuballing, road  Yornulup plus 400 = at the 400M mark.
It is important that the sample is sealed so that the in situ moisture can be ascertained, as well as a note made of the climatic conditions of the day and the time of year.  This information will be useful in the planning of the project further down the line.  After testing, samples should be returned to the bags and held for a period of time, at least until after the day of construction, so that any irregularities between field results and laboratory testing can be properly evaluated. 

Project Proposal
 Endurazyme like any other product must be able to show value to potential users.  It is important that information is collected in the qualifying process with potential clients in regard to the cost centres associated with constructing or recycling a pavement without the use of Endurazyme.  While this information is not always readily available best attempts should be made to collect it.  Without this information, and the establishment of a reasonably accurate break even point, evaluation of the product can subsequently become subjective.  It is our responsibility as suppliers of Endurazyme to establish these figures.  In situations where the cost of importing is greater than $X per m3, the capital cost of  Endurazyme is easily covered.  It is then a matter of the product performing over time in a similar fashion to the performance of the imported material.  Our client history file to date suggests that this is the case.  Of course there are other benefits. 

Other inherent advantages are:

•  Use of marginal materials therefore increasing gravel resource
•  Construction time is considerably shortened, convenience to rate payers and road users significantly reduced
•  Subsequent savings on maintenance schedules

Project Preparation
When the client has decided to go ahead, it is important that preparation is done to ensure that the many variables associated with road building are controlled and planned for.  With the project approved, the maximum dry density and compaction tests can be carried out.  Results should then be analysed to ascertain: 
 

•  The volumes of water needed for the project.
•  The water sources and turn around times for the water truck.
•  The type of equipment which will be available for the project.
•  The expectation of the client in relation to construction time.

If the client is a first time user it is important that the work team are briefed and made to feel comfortable with the application of the product.