Rutgers NJAES: Lawn & Garden
If you go down to services there is a soil testing link. Any time you are in NJ you have to worry about contaminated soil. Whether its lead paint, PCBs/PBDEs or who know what else if you are growing things to eat its definitely worth finding out.
For the veggie garden at my house (way smaller than yours at about 100 sq ft) we made multiple raised beds based on the gardening by the square foot method. (
Building a square foot garden: Journey to Forever) We made sure that the beds were filled with very good quality soil with compost from our local municipal compost heap and go completely organic.