Exhibit 9.01

Exhibit 9.02

Exhibit 9.03

Exhibit 9.04

Exhibit 9.05

Exhibit 9.06

Exhibit 9.07

Exhibit 9.08

Exhibit 9.09

Exhibit 9.10

Exhibit 9.11

Exhibit 9.12

Exhibit 9.13

Exhibit 9.14

Exhibit 9.15

Exhibit 9.16

Exhibit 9.17

Exhibit 9.18

Exhibit 9.19

Exhibit 9.20

Exhibit 9.21

Exhibit 9.22

Exhibit 9.23

Exhibit 9.24

Exhibit 9.25

Exhibit 9.26

Exhibit 9.27

Exhibit 9.28

Exhibit 9.29

Exhibit 9.30

Exhibit 9.31

Exhibit 9.32

Exhibit 9.33

Exhibit 9.34

Exhibit 9.35

Exhibit 9.36

Exhibit 9.37 Mean: MMDth Median: MMDth Base Case: MMDth

Exhibit 9.38

Exhibit 9.39

Exhibit 9.40

Exhibit 9.41

Exhibit 9.42

Exhibit 9.43

Exhibit 9.44

Exhibit 9.45

Exhibit 9.46

Exhibit 9.47

Exhibit 9.48

Exhibit 9.49

Exhibit 9.50 Mean: HDD Median: HDD Base Case: HDD

Exhibit 9.52 Mean: 0.91 MMDth Median: 0.90 MMDth Base Case: 0.95 MMDth

Exhibit 9.53

Exhibit 9.54

Exhibit 9.55

Exhibit 9.56

Exhibit 9.57

Exhibit 9.58

Exhibit 9.59

Exhibit 9.60

Exhibit 9.61

Exhibit 9.62

Exhibit 9.63

Exhibit 9.64

Exhibit 9.65 Mean: MMDth Median: MMDth Base Case: MMDth

Monthly Gas Purchase Distribution 2011 Plan Year Scenario 1010 : 1198 Draws yearmonthmeanmaxp95p90medp10p5min Exhibit 9.66

Exhibit 9.67

Exhibit 9.68

Exhibit 9.69

Exhibit 9.70

Exhibit 9.71

Exhibit 9.72

Exhibit 9.73

Exhibit 9.74

Exhibit 9.75

Exhibit 9.76

Exhibit 9.77

Exhibit 9.78

Exhibit 9.79 Mean: MMDth Median: MMDth Base Case: MMDth

Monthly Cost-of-Service Gas Distribution 2011 Plan Year Scenario 1010 : 1198 Draws yearmonthmeanmaxp95p90medp10p5min Exhibit 9.80

Exhibit 9.81 Mean: Million Dollars Median: Million Dollars Base Case: Million Dollars

Exhibit 9.82 Mean: Billion Dollars Median: Billion Dollars Base Case: Billion Dollars

DemandSupply v. Requirements AreaClassJun-11Jul-11Aug-11Sep-11Oct-11Nov-11Dec-11Jan-12Feb-12Mar-12Apr-12May-12Total Ut KRGTGS_COM Ut KRGTGS_RES Ut KRGTL_and_U UT NPCGS_COM UT NPCGS_RES UT NPCL_and_U Ut/IdFS_COM Ut/IdFS_IND Ut/IdGS_COM Ut/IdGS_RES Ut/IdIS_COM Ut/IdIS_ELC Ut/IdIS_IND Ut/IdL_and_U Wy QGCFS_COM Wy QGCFS_IND Wy QGCGS_COM Wy QGCGS_RES Wy QGCIS_COM Wy QGCIS_IND Wy QGCL_and_U Wy WamGS_COM Wy WamGS_RES Wy WamL_and_U Off-System Demand Fuel Transport Fuel Inject Fuel Withdrawal InjectAquifer InjectClay Basin Total Required Exhibit 9.89

Supply v. Requirements Jun-11Jul-11Aug-11Sep-11Oct-11Nov-11Dec-11Jan-12Feb-12Mar-12Apr-12May-12Total SupplyExisting SupplyBase SupplySpot SupplyPeak StorageCompany StorageAquifer StorageClay Basin Off-System Produce Total Required Exhibit 9.90