Not to rain on your parade, but doesn't your survey require a random sample?
Perhaps selecting every 10th address would not qualify.
Another approach, assuming you can sort the data, is to put a column on the
right with the formula =RAND() and copy that down. Then sort using that column
of random numbers as the key. Choose the top 3500 (or bottom 3500, or any
group of 3500 from any position in the list).