Other duties of Richmond's City Clerk include assisting the Mayor with appointments, telephone calls and clerical work as needed. Also the City Clerk is the bridge between executive and legislative, between both of these and component government units, and between all of these and the public they are pledged to serve.
A micron is a unit of linear measure in the metric system used to measure distance from one point to another. The particles and contaminants that we are trying to filter out are far smaller than can be seen with the naked eye, magnifying glass or even a low powered microscope.
A VPN (virtual private network) is software that connects your computer to another computer (a VPN server) somewhere else in the world. The connection between your computer and the VPN server is encrypted. That is what a VPN is, but a pay-for VPN service offered by a third party is slightly different.