How would acid rain effect the PH of the soil in sod/turf?

I need to know the approximate PH of a normal type of the soil in sod/turf, then how the PH would change with acid rain. Please explain beyond, ';it becomes more acidic.'; Thanks.How would acid rain effect the PH of the soil in sod/turf?
ILIVE IN THE ADIRONDACKS, ACID RAIN REALLY DID A NUMBER ON US, HERE HOW IT WORKS. ACID RAIN COMES DOWN, RUNS THREW SOIL ,OVER ROCKS AND SUCH..THE ACID BREAKS DOWN MINERALS MIXING THEM TO EXTREMES IN RUN OFF. IN LAKES PONDS. KILLING A DELECATE BALANCE.How would acid rain effect the PH of the soil in sod/turf?
';Most lawn grasses thrive in 6.0-7.0 pH soil.';

http://en.wikipedia.org/wiki/Sod

';The correct pH level for lawn and sod areas is between 6.0 and 6.8.';

http://www.delaliosod.com/preparation.ht



When the pH level of rainwater goes below 5.6, it is considered acid rain.



Acid rain can lower the soil pH below 5.5.

http://library.thinkquest.org/CR0215471/



This low soil pH will reduce the activity of soil microbes that decompose organic matter to release nitrogen in a plant available form. Low soil pH also reduces the availabilty of essential plant mineral nutrients, such as calcium, magnesium, potassium, phosphorus, boron and molybdenum.

http://www.madsci.org/posts/archives/sep