A letter to the Bristol, Virginia city manager from the BVU Authority reports two additional violations at the Bristol Virginia Sanitary Landfill for high levels of the carcinogen benzene.It is the latest in a series of benzene violations Bristol residents said affect them medically, in addition to the discomfort caused by an often overwhelming smell coming from the landfill.A letter addressed to City Manager Randall Eads said two instances of high benzene levels were reported in violation of the landfill’s industrial wastewater permit.IN Cotber the limit was found to be 58 times the legal limit.