I need a freelance copywriter to complete blogs on air quality & pollution monitoring

Num. of articles: -
Words per article: 400-600
Blog/website url: -
Information for the blog/website: Stack emissions monitoring, air quality monitoring, pollution monitoring
Industry: Environment
Topic: Air/Pollution monitoring
Tone: Formal/Professional
Outline & Structure: I am looking for a specialist writer that is able to complete a number of blog posts based around air quality monitoring, stack emissions monitoring, pollution monitoring etc.

This is a niche industry, and a specialist subject, so I need a writer that has experience within this sector.
Extra notes: Please provide relevant examples of previous work and provide a price/400wd blog rather than an hourly rate.

I will provide more information after receiving proposals.

Thanks.