1. ASTM D2311-11 “Standard practice for underground installation of thermoplastic pipe for sewers and other gravity-flow applications”
2. ASTM 698-07 “Standard method for laboratory compaction characteristics of soil using standard effort”
3. ASTM D2321-11 “Standard Practice for Underground Installation of Thermoplastic Pipe for Sewers and Other Gravity-Flow Applications”
4. Brentwood (2012) “Stormtank storage modules site preparation & installation instructions”