The Arizona Department of Environmental Quality (ADEQ) is issuing a dust High Pollution Advisory (HPA) for Wednesday, Dec. 13, 2017, for coarse particulate matter (PM10) in Maricopa County. This HPA is due to particle pollutant levels expected to accumulate enough to exceed the federal health standard for PM10.
Representative from the U.S. Army Corps of Engineers are on site at this time to assist in the development of a plan to divert the flow of water in the area of the partial breach of the International Outfall Interceptor (IOI).
Site surveys are being conducted along the IOI to assess any change to the current conditions of the wash after last night’s storms.
During an inspection of the International Outfall Interceptor (IOI) on July 25, the City of Nogales public works reported a partial breach of the IOI approximately 200 yards north of the intersection of Old Tucson Rd. and the Nogales Wash.
A dislodged section of cement that encases one of the manhole accesses to the IOI, partially sheared the pipe below the waterline causing discharge of untreated wastewater into the Nogales Wash.
The Arizona Department of Environmental Quality (ADEQ) is issuing an Ozone High Pollution Advisory (HPA) for Maricopa County, effective Friday, July 7, 2017. This HPA is due to ozone levels expected to accumulate enough to exceed the federal health standard for ozone.