How do i contact gfl environmental usa? GFL Environmental USA Inc. 6200 Elmridge Dr. Sterling Heights, MI, 48313. (586) 772-8900 Office. (586) 795-2740 Fax. GFLenv.com.How do i contact the new jersey department of environmental protection? The Department has established a toll-free telephone hotline number you can use to report environmental incidents, abuses and complaints in New Jersey or impacting it. 1-877-WARNDEP (1-877-927-6337) can be used from the New Jersey, New York, Pennsylvania and Delaware calling areas.How do i contact gflenv usa? GFL ENVIRONMENTAL USA INC. 26999 Central Park Boulevard, Suite 200 Southfield, MI 48076 (586) 772-8900 Office (586) 795-2740 Fax GFLenv.comWhy enhenv services? ENV meets its customers' equipment calibration, testing, certification and maintenance needs by offering services on an as-needed or service contract basis. Replacement parts for the majority of repairs are readily available, enabling us to keep equipment downtime to a minimum. GET A QUOTE! in observance of Labor Day.