Permanent improvements, such as sanitary water mains and storm sewers, often require maintenance and repair following their installation. To facilitate repair and maintenance it is necessary to know exact locations of the utilities in order to avoid tedious and expensive search.
Exact locations based upon engineering and surveying techniques of direction, distance and grade should be drawn to scale on plans submitted by the subdivider or his engineer to the Town for its records. Information such as the following should be indicated on the plans:
A. 
Location of manholes.
B. 
Location of catch basins.
C. 
Location and direction of trunk sewer lines and water mains.
D. 
Location of connections between the sanitary sewer trunk line and laterals.
E. 
Grades for laterals.
F. 
Depth of main trunk lines and laterals.