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FOR IMMEDIATE RELEASE Wednesday, November 19, 2014 Media Contact:  Markus Owens, ENV PIO, (808) 768-3454     Sand Island WWTP outfall condition assessment   HONOLULU – The city's Department of Environmental Services (ENV) and Department of Design and Construction (DDC) are conducting an inspection of the flap gate at the Sand Island Wastewater Treatment Plant (WWTP) outfall pipe November 20, 2014, from 1- 5:00 a.m.            A private consultant engineering firm and its sub-consultant will perform the nighttime investigation and assessment.  This project will assess the structural condition of the flap gate at the end of the outfall.            The Hawaii Undersea Research Laboratory (HURL) will use a deep-diving manned submersible to conduct the inspection.  Flows will be held back during low flow hours.            The 84-inch outfall pipe transports primary treated effluent from the WWTP to a depth of 240 feet and approximately 2.3 miles off shore to blend back into the environment.  The plant services residents and businesses from Kuliouou to Salt Lake, including Kahala, Kaimuki, Waikiki, Manoa, Makiki, downtown Honolulu and Kalihi.            The city anticipates no disruptions to water, sewer or roadways while crews perform the work.     -END-