Old field notes, RPRs on the block, a database of coordinates… these are very useful for consistently re-establishing boundaries. Indeed, historical field notes might be the best available evidence of the position of a lost monument. Using historical information is also a good way to reduce costs. However, it must be used appropriately.
 
Interpretive Bulletin 9-2012 describes best practices for using historical information on current surveys.
 
In general, it is acceptable to use historical data but key information like, who found the post and when, must be clearly shown on the plan.
 
Please review Interpretive Bulletin 9-2012 which is available in the Essential Resources for Alberta Land Surveyors Document for additional guidance on using historical information.