This home is on the 1885 Sanborn with a long sidewalk leading toward the alley, then it makes a 90 to the east and continues for about 10'. Is this a possible location for privies? I've scraped the dirt exposing the sidewalk. Alley is 15' on past the sidewalk end. Probed a bit with my 5' probe, don't know really what I'm supposed to feel. Did I make my probe correctly? Rick