####Pages embedded for further information:

**Background information** 

- Particulate Matter (link to the info below on this page)
- Silica (link to silica page)

**[Regulations on Monitoring](https://publiclab.org/wiki/pm-monitoring-regulations)** wiki includes information on Federal Reference Methods... 

**[Collecting Data on Particulate Matter](https://publiclab.org/wiki/pm-monitoring)** provides an overview of monitoring options for particulate matter. These are further broken down into three main types of data collection:

- [Active monitoring](https://publiclab.org/wiki/active-pm)
- [Optical monitoring](https://publiclab.org/wiki/optical-pm)
- [Passive monitoring](https://publiclab.org/wiki/passive-pm) 

**Public Lab Tool Development on Passive Monitoring**

- [Assembling the tool](https://publiclab.org/wiki/passive-pm-assembly)
- [Deploying the tool](http://publiclab.org/wiki/passive-pm-deployment)
- [Collecting the samples and creating images of them](https://publiclab.org/wiki/passive-pm-imaging)
- [Analyzing the images](https://publiclab.org/wiki/passive-pm-analysis)