Specifications include, but are not limited to: This Specification is to provide nine closed top Frac Tanks for TxDOT El Paso District. See each line item for each delivery location. The frac tank must: 1. Be 2022 model year or newer and not be used or reconditioned. 2. Have a 500 BBL (21,000 Gal.) carrying capacity. 3. Have the following dimensions or approved equal: Maximum Length: 46’ Long Maximum Height: 11’ High Maximum Width: 8’6” Wide 4. Have a 2-step design roof at a minimum of 1/4" PL solid welded with channel supports outside. 5. Have walls at a minimum of ¼” PL solid weld, smooth insides with channel supports outside. 6. Have a ¼" PL, V-bottom floor with Integral formed side channels. 7. Have a floor support of a minimum of 10” channel longitudinal runners with 8” channel and formed ¼” PL channel crossmembers. 8. Include a minimum of two manways a minimum of 21" diameter if circular, 21" corner to corner if square, or 21" diameter of the largest opening if oval. 9. Have drain/fill connections as follows: 4” drain at floor each end 3” fill pipe to roof at front 3” elbow fill line with cap 4” connection on front 4” connection on roof 8” flanged front manifold connection with inside flange 10. Have a safety walkway. 11. Have access to stairs. 12. Have a ladder painted safety yellow with non-slip step materials. The ladder shall be compliant with Occupational Safety and Health Administration (OSHA) Standard CFR 1926.1050. 13. Have a standard 5th wheel king pin. 14. Have bias tires with the dimensions of 11” x 22.5 on steel disc wheels. 15. Have an axle suspension system with a minimum of 25k lbs capacity with air brakes. 16. Have all welds be continuous except at substructure crossmembers. 17. Be sealed and leakproof. 18. Be coated on the inside of the tank with an epoxy-based lining. 19. Be coated on the outside with a weather/rust resistant substance. 20. Have had a full capacity static test. 21. Have tank pressure/vacuum relief vent. 22. Have level gauging. 23. Have Safe Operations reminder decals. 24. Have D.O.T. Taillights. 25. Not have a manifold.