Represented the owner of a mobile home in a park where the sewer system regularly overflowed under his unit. Determined that the previous overflows were due to problems with the pump station that served the mobile home park. These problems were fixed but another overflow occurred. Determined that there was also a problem with roots clogging the sewage line that served the unit. Noted that there were no manholes in the park, thus there was very limited access to the sewer system.