The Richardson Health Department plans to spray for mosquitoes in four sections of the city after traps tested positive for West Nile virus.

Workers will spray between 9 p.m. and 4:30 a.m. Sept. 8-9 in each of the areas. One spray area will be from Coit Road east to Cottonwood Creek between Arapaho Road to the north and Spring Valley Road to the south. The next two spray areas will be within the northeast panhandle section of the city from Shiloh Road east to Rowlett Creek and then from that creek east to Murphy Road. The other spray area will be from Bowser Road to the west and Jupiter Road to the east between Apollo Road to the north and Buckingham Road to the south.

Richardson health officials previously alerted residents to plans to spray various sections of the city each of the last five weeks.

Richardson officials are working with other health agencies in the metroplex to contain the spread of the West Nile virus, according to a city news release. Measures being taken include traps being set across the city to monitor mosquito populations, reducing water levels where needed and collaborating with regional partners to improve the monitoring of the virus.

Richardson offers an interactive mosquito map on its website that allows residents to find out the latest test results in their area.

Additional information about Richardson’s mosquito control program is available on the city website.