fresh air intake

fresh air intake ductwork was installed around 4 feet from a washing machine exhaust pipe, 6 feet from a hot water heater exhaust and 12 feet from the gas furnace exhaust. they are also about 2 to 3 feet above the mold resistant asphalt roofline.

any problem with drawing in bad air from any of these exhausts? thank you.

do you have a pic

I believe the clearance you are referring to is 2 feet.

http://commerce.wi.gov/SBdocs/SB-CommercialBuildingsCode2003EnRepV21314.pdf