Figure: 30 TAC 285.33(b)(2)(B)


                                                                    A = 1.6 Q/Ret


                                                                    Where: A =         total top surface area of the excavations.

                                                                                    Q =     estimated daily water usage in gallons/day in 285.91(3) of this title (relating to
                                                                                               Tables).

                                                                                    Ret =    net local evaporation rate in 285.91(7) of this title.