X0206 3 2017-05-11 1 0001697500 Solaris Oilfield Infrastructure, Inc. SOI 0001370287 Keenan W Howard JR 9811 KATY FREEWAY, SUITE 900 HOUSTON TX 77027 1 0 0 0 See attached for Exhibit 24 - Power of Attorney /s/ Cynthia M. Durrett, as attorney-in-fact for W. Howard Keenan, Jr. 2017-05-11