Also, suggest encyclopedia of PVC- it starts with EDC to PVC. Good sections on Safety, Envrionmental, and even the process issues. I used this quite a bit...been in the EDC/VCM/PVC business for 26 years.
There is an association called VCSA-Vinyl Chloride Safety Association that meets once per year. You must be a producer to join. Contact Dow or OxyVinyls and they can direct you to a contact to join. Also, you should get familiar with NESHAPS VV which deals with EDC/VCM/PVC production(40...