0 ft. 60 ft. 100 ft. 200 ft.

N

S

EW

Heater Treater/Separator

SPCC Facility Layout & Location Diagram

WPX Energy Williston, LLC

Facility: Skunk Creek 1-12H PadThree Affiliated Tribes of the Ft. Berthoud Reservation

Lot 3 Sec. 1 T148N Range 93W

Latitude: 47.67240 Longitude: -102.47432

Dunn County, North Dakota

Surface Drainage

Access Road

Perimeter Earthen Berm/Cut Slope

Pad Size: 1.91 acres

NOTE: Well Pad Location Plat taken from WPX Wellfiles

Well Pad Location Plat

WPX Energy Williston, LLC

Wells: Revised By: BSF

Revision Date: 2014-04-04

PE Review By: DJF

PE Review Date: 2014-04-04

Legend

Wellhead

Perimeter Earthen Berm/Cut Slope

Lined Steel Containment Structure

Building

Containments

Skunk Creek 1-12H

2000 ft0 ft

Skunk Creek 1-12HWellhead

LACT & Meter House

Tanks

Pump House

Location of

Skunk Creek 1-12H Pad

Legend

Meter House

Pump House

Flare

Fence

Water Line

Flow Line

Oil Production LineGas Sales Line

Recycle Line

Equalizer Line

Oil Sales Line

Vent Line

Secondary Containment

Wellhead

Perimeter Earthen Dike

PH

MH

Facility Photo

Topo JPG

Facility Location

N

S

EW

N

SE

W

Emergency Phone:

(701) 837-2900

2000 ft1000 ft0 ft

0 ft. 6 ft.10 ft. 20 ft.

Note: This unit is subject to the site security plan for the Williston Basin Plan is located at:

WPX Energy Williston, LLC 1801 Burdick Expressway WestMinot, ND 58701

4/4/2014DATE:DRAWN BY: BSF

Seal Chart

Equalizer Valves

Fill Valves

Tank Sales Valve

LO Sales(2)

Valve

Oil Sales Phase Valve Positions for Sales (1)

OIL

SA

LES

MET

HO

D TRUCK

Production Line SC Recycle Line SC Oil Sales Line O(2) O Equalizer Line SC

LACT

Production Line O/C Recycle Line SC Oil Sales Line O SC Equalizer Line O/C

PR

OD

UC

TIO

N

Production Phase Valve Positions for Production(1)

O/C O/C

Tank Oil Sales O/C SC O/C

Production LineRecycle Line

(1) SC=Sealed Close; C=Closed; O=Open; O/C= Open or Closed; LO=Loadout Drain valves always in SC position (2) All other tank sales valves SC.

Equalizer Line

Recycle Valves

Treater

Separator

Tank 5400 bbls

PW 12' dia

Tank 1400 bbls

Oil 12' dia

Tank 2400 bbls

Oil 12' dia

Tank 3400 bbls

Oil 12' dia

Tank 4400 bbls

Divert 12' dia

LACT UnitCoriolisMeter

LO

LO

Oil Sales LineDivert Line

Transfer Pump

Water Disposal

Gas Sales Line

Recycle Pump

Tank Vent Line

60.0'

59.0'

30.3'

30.7'

Surface Drainage

Containment 1Lined SteelHeight 32"

Containment 3Lined SteelHeight 30"

Road

Gas Relief Line

MH

56.1'

24.6'

Surface Drainage

Surface Drainage

Pumping Unit

108'

50'

105'

Containment 2Lined SteelHeight 30"

Containment 4Well Pad Perimeter

Earthen DikeHeight 12"(Not to Scale)

Booster Pump

6.0'

Electric-Powered Gas Compressor

WPX Energy SPCC Facility & Site Security

Facility: Skunk Creek 1-12H PadWell: Skunk Creek 1-12H

Three Affiliated Tribes of the Ft. Berthoud Reservation

Lot 3 Sec. 1 T148N Range 93W

Latitude: 47.67240 Longitude: -102.47432

Dunn County, North Dakota

NDIC 18922

NDM101361

14-20-A04-8447

(7420A48447)

Skunk Creek 1-12H

NDIC 18922

NDM101361

Wellhead

Containment 1 Rectangular Containment Volume Calculations:V1,total = A1 x H1

A1 = R1 = 3366 ft2 V1,total = 3366 ft2 x 2.6' = 8751 ft3

Containment 2 Rectangular Containment Volume Calculations:V2,total = A2 x H2

A2 = R2 = 1451 ft2

V2,total = 1451 ft2 x 2.5' = 3627 ft3

Containment 3 Rectangular Containment Volume Calculations:V3,total = A3 x H3

A3 = R3 = 930 ft2

V3,total = 930 ft2 x 2.5' = 2325 ft3

Containment 4 Perimeter Earthen Dike Volume Calculations:V4,total = APad x H4

V4,total = 1.91 acres x (43560 ft2/1 acre) x 1'V4,total = 83199 ft3

Containment 1 Building/Equipment Displacement Calculations:VB4 = LB4 x WB4 x H1 VB4 = 8' x 8' x 2.6' = 167 ft3

Total Displacement = 167 ft3

Containment 2 Building/Equipment Displacement Calculations:VB2 = LB2 x WB2 x H2 VB2 = 10' x 16' x 2.5' = 400 ft3

VB3 = LB3 x WB3 x H2 VB3 = 4' x 6' x 2.5' = 60 ft3

Total Displacement = 400 ft2 + 60 ft2 = 460 ft3

Containment 3 Building/Equipment Displacement Calculations:VB1 = LB1 x WB1 x H3

VB1 = 14' x 16' x 2.5' = 560 ft3

Total Displacement = 560 ft3

Containment 4 Displacement Calculations:Total Displacement = (A1 + A2 + A3) x H4

Total Displacement = (3366 ft2 + 1451 ft2 + 930 ft2) x 1' = 5747 ft3

Precipitation Volume Containment 1:V1,precip = A1 x Hprecip

V1,precip = 3366 ft2 x 0.5' = 1683 ft3

Precipitation Volume Containment 2:V2,precip = A2 x Hprecip

V2,precip = 1451 ft2 x 0.5' = 726 ft3

Precipitation Volume Containment 3:V3,precip = A3 x Hprecip

V3,precip = 930 ft2 x 0.5' = 465 ft3

Precipitation Volume Containment 4:V4,precip = APad x Hprecip

V4,precip = 83199 ft2 x 0.5' = 41600 ft3

Facility: Skunk Creek 1-12H Pad

Revised By: BSFRevision Date: 2014-04-04PE Review By: DJFPE Review Date: 2014-04-04

Notes:Precipitation Calculations: Utilized U.S. Dept of Commerce Rainfall Frequency Atlas of the United States 25-yr 24-hr event (inches) = 3.7" plus snowfall estimate = 6" = 0.5 ft = Hprecip

Pad Area: Area of well pad = Apad. Used conservative value for unknown pad areas because all existing pads are greater than 1 acre (43,560 ft2). Exact survey data used when available.

R3

R2

R1 = 60' x 56.1' = 3366 ft2

PHB4

Separator Building

B1

B3

LACTB2

60.0'

59.0'

30.3'

30.7'

Containment 1Lined SteelHeight 32"

Containment 3Lined SteelHeight 30"

56.1'

24.6'

Containment 2Lined SteelHeight 30"

R3 = 30.3' x 30.7'R3 = 930 ft2

R2 = 24.6' x 59'R2 = 1451 ft2