I did some more research and found a Massachusetts University that does soil testing. The prices seem reasonable. I started a separate thread to make it more visible but I thought you might be interested.
I'd appreciate any feedback from you on the prices and on the gardening tips for limiting lead availability.
Umass Soil and Plant Testing – Services & Price Listhttp://www.umass.edu/plsoils/soiltest/services1.htm
NOTE – Prices range from $9.00 to $60.00
$9.00 for a Standard Soil Test: pH, Buffer pH, Extractable Nutrients (P, K, Ca, Mg, Fe, Mn, Zn, Cu, B), Extractable Heavy Metals (Pb, Cd, Ni, Cr), and Extractable Aluminum, Cation Exchange Capacity, Percent Base Saturation. $30.00 Total Soil Metals: A determination of the Total Soil Contents of K, Ca, Mg, Fe, Mn, Zn, Cu, Pb, Cd, Ni, and Cr. Also included are the non-metals P and B. Analysis by ICP Spectrometry of Nitric/Perchloric Acid Digest.
Umass Soil Sampling Instructionshttp://www.umass.edu/plsoils/soiltest/soilbrochb.htm
The sampling process is a little more complicated than I would have thought and involves taking 12 samples lover a “well defined area”, mixing them together, spreading the dirt out to let it dry, mixing it together in a clean container, taking one cup from the mixture, taking the final sample from the mixture and mailing it in a zip loc bag.
Umass Soil Testing Brochurehttp://www.umass.edu/plsoils/soiltes...ochdec2003.pdf
Umass Info Sheet on Lead Level Interpretation and Recommendationshttp://www.umass.edu/plsoils/soiltest/lead1.htm
EXCERPT Good Gardening Practices to Reduce the Lead Risk 1. Locate gardens away from old painted structures and heavily travelled roads. 2. Give planting preferences to fruiting crops (tomatoes, squash, peas, sunflowers, corn, etc.). 3. Incorporate organic materials such as finished compost, humus, and peat moss. 4. Lime soil as recommended by soil test (pH 6.5 minimizes lead availability). 5. Discard old and outer leaves before eating leafy vegetables. Peel root crops. Wash all produce. 6. Keep dust to a minimum by maintaining a mulched and/or moist soil surface .