Radon Sump Mitigation = Very Effective.
After testing and finding out I had a radon problem, I decided to tackle the mitigation myself.
Val's website has all the info you need to complete the job and save some cash.
In my basement area (aprox 800sq ft) I had a sump pump with the old Pac-man style lid. No doubt it was a major entry source for radon.
I also had a decent sized gap all along the area where the basement slab meets the poured walls. Another source of entry.
Lastly, my huge crawl space (aprox 2500sq ft) has a vapor barrier but it is not sealed.
Using Val's site for guidance and supplies I was able to:
-design a mitigation system that would work best for my situation
-ensure all work was done within code
-seal all cracks using the radon sealant found sold on his site
-fabricate a sealed lid for my sump pump basin
-fabricate a 4" venting system that vents directly from the sump
-install an outdoor radon fan
I'm glad to report I did not need to seal and vent the crawl space also because after completing the above work, my level fell to 1.6!
Best of all, I saved approximately $400 by doing the work myself.