Another company (ASAP) put this drain field in for us 8 years ago.  It was very close to the surface - - so close we could see the huge plastic infiltrators sticking out of the soil.  The field failed and water started oozing up to the surface.  We called about 4 companies, including ASAP, but they all charged money ($100+) just to come look at the situation.  (Didn't trust ASAP enough to go back to them.)  Found Mr. Johnson via referrals from the "A" providers on Angie's List (that don't service the Salisbury area.)  Called him up on a Thursday evening, he came on a Friday.  Assessed the problem and gave us a quote.  It was fixed by Tuesday!  I wasn't around when the work was done (it's at a rental property) but a neighbor was and he was very impressed with Mr. Johnson and his crew.  (And it's not easy to impress this neighbor!)  They moved huge amounts of dirt and put it all back in place.  Even put down grass seed!  I would call Mr. Johnson again if anything else happens.  I recommend him highly!