More Oil Field Wastewater Pits Found in California! FracTracker worked with Clean Water Action to map an update to last year’s report on oil field wastewater pits, also known as sumps. Source: More Oil Field Wastewater Pits Found in California! By Tad Simmons| 2017-02-28T16:37:33+00:00 Tuesday, February 28, 2017|Uncategorized|0 Comments Share This Story, Choose Your Platform! FacebookTwitterLinkedinRedditGoogle+PinterestEmail About the Author: Tad Simmons Related Posts Leave A Comment Cancel reply Comment Notify me of follow-up comments by email. Notify me of new posts by email.