Baseline Groundwater SamplingProgram Design Considerations

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Information contained herein is the property of and is proprietary to Weston Solutions, Inc. and shall not be reproduced, disclosed, or used without the prior written permission of Weston Solutions, Inc 2

Information contained herein is the property of and is proprietary to Weston Solutions, Inc. and shall not be reproduced, disclosed, or used without the prior written permission of Weston Solutions, Inc

States with Baseline Sampling Regs

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State Mandatory Sources SampledNo. Samples

Required RadiusResults to Landowner

Post-Drill Sampling

CO YesWells, springs, and

seeps2 (nearest sources)

½ mileWithin 3

months of sampling

Yes

CO – Wattenberg Yes Wells 1

Within governmental

quarter section or ½ mile

Within 3 months of sampling

Yes

Maryland No

Drinking, agricultural, and livestock water

sources

All sources in radius

2500 ftYes – no

timing mandated

No

Pennsylvania No WellsAll wells in

radius2500 ft

10 days from lab report

No

Ohio Yes WellsAll wells in

radius1500 ft rural None No

Alaska – proposed Yes Wells

All wells in radius

¼ mile None Yes

Wyoming – possible

Colorado regulations expected to be the model

Information contained herein is the property of and is proprietary to Weston Solutions, Inc. and shall not be reproduced, disclosed, or used without the prior written permission of Weston Solutions, Inc

Information contained herein is the property of and is proprietary to Weston Solutions, Inc. and shall not be reproduced, disclosed, or used without the prior written permission of Weston Solutions, Inc

WESTON’s Baseline Experience

• Performed Baseline Sampling in:

• Pennsylvania (regulated)

• Ohio (regulated)

• Texas (voluntary)

• Colorado (voluntary when performed, now regulated)

• Designed Baseline Programs for:

• Regulated and Voluntary Regimes

• High and Low Volume Drilling Plans

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Information contained herein is the property of and is proprietary to Weston Solutions, Inc. and shall not be reproduced, disclosed, or used without the prior written permission of Weston Solutions, Inc

What is Baseline Sampling?

Baseline Sampling – The process of collecting water samples from sources surrounding a well pad to document groundwater conditions prior to drilling.

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Information contained herein is the property of and is proprietary to Weston Solutions, Inc. and shall not be reproduced, disclosed, or used without the prior written permission of Weston Solutions, Inc

Baseline Program Design

• Establishing the Program’s Goals

• Geographic Scope

• What to Sample

• Where to Sample

• Obtaining Permission to Sample

• What Analyses to Perform

• Managing Information

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Establish Program’s Goals

• Risk Management

• Provides documentation of pre-drilling groundwater conditions

• In some States, can satisfy regulatory requirements that also provide operator with some liability protection

• Regulatory Drivers

• Required to obtain drilling permit in Ohio

• Mandatory in some States

• Stakeholder Engagement

• Shows landowners that the Operator is taking care in how they do business

Information contained herein is the property of and is proprietary to Weston Solutions, Inc. and shall not be reproduced, disclosed, or used without the prior written permission of Weston Solutions, Inc

Geographic Scope

• Is Program for one operating unit or multiple/all?

• What should be consistent across geographies?

• Consider local logistics

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What to Sample

• Public and private water wells

• Surface water sources

• Seeps and springs

• Agriculture, livestock and potable sources

Information contained herein is the property of and is proprietary to Weston Solutions, Inc. and shall not be reproduced, disclosed, or used without the prior written permission of Weston Solutions, Inc 10

Where to Sample

• No consensus among operators or state guidance

• Generally surface hole location used as the starting point

• ½ to 1 mile radius?

• Enough samples to berepresentative

Information contained herein is the property of and is proprietary to Weston Solutions, Inc. and shall not be reproduced, disclosed, or used without the prior written permission of Weston Solutions, Inc 11

Obtaining Permission to Sample

• Initial contacts best done over the phone or in person, when possible

• Written permission to be on property required

• Be ready to explain why samples are being collected

• Offer to provide analytical results to the landowner

• Be ready for the question:

o “When are you coming back to sample after drilling?”

Information contained herein is the property of and is proprietary to Weston Solutions, Inc. and shall not be reproduced, disclosed, or used without the prior written permission of Weston Solutions, Inc 12

Analyses to Perform

• Highly Regional – Driven by Program Goals

o General Chemistry

o Anions - Cations

o Metals

o Dissolved Gasses

o BTEX

o TPH

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Managing Information

• High-quality data is critical to the program

• Recommend the use of a database

• Plan to manage the data before you need to manage the data

o The amount of information stranded in spreadsheets can be overwhelming

Information contained herein is the property of and is proprietary to Weston Solutions, Inc. and shall not be reproduced, disclosed, or used without the prior written permission of Weston Solutions, Inc 14

ShaleFast(SM) Viewer - Demo

• Features are highly customizable

• GIS data can be shown on Web-based interface

• Data is linked to well pad, property or other location

• Analytical data query and export features are built-in

• Data can be pulled from multiple sources, if desired

• Data can be verified against quality criteria before being published

• http://westonitsolutions.net/shalefastdemo/login.aspx

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Contacts: Barbara Denson – 713.985.6764

Ryan Leatherbury – 210.248.2456

Rick Farrand – 303.729.6154