August 27, 2018
Download the August 27, 2018 MOWMA/OWSIM Newsletter.
Download the August 27, 2018 MOWMA/OWSIM Newsletter.
This complimentary magazine is full of articles and information relevant to people working in the wastewater industry. It’s been a little while since an issue was published, but the Fall 2018 issue will be sent to the printers soon. If you’ve moved recently, now is the time to let us know so you don’t miss …
Effective July 18, 2018, the placement of graded stone beneath prefabricated, gravel-less chambers is no longer required or recommended for disposal field systems, including sand mounds and sand-lined trenches. This change applies to chambers with an H-10 AASHTO load rating (16,000 lbs/axle). Graded stone is still required beneath chambers having an H-20 AASHTO load rating …
Changes to Graded Stone Requirements for Prefabricated, Gravel-less Chambers Read More »