Does anyone know how to locate exit drains on putting greens?  Ours were constructed in 1991 and I would like to "uncover" these lines.  I have no plans to go by but could give an educated guess as to the general direction they would be.  I thought I remembered hearing/reading about a company that specializes in this type of work.  Thanks in advance.
John G. Ballard, CGCS
Audubon Country Club
Louisville, KY
jballard@auduboncc.org