Baseline Groundwater Sampling Program Design Considerations 1

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

States with Baseline Sampling Regs 3 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

WESTONs 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 4

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. 5

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 Programs Goals Geographic Scope What to Sample Where to Sample Obtaining Permission to Sample What Analyses to Perform Managing Information 6

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 7 Establish Programs 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 8

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 9 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 be representative

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

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 13 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

15 n Contacts: n Barbara Denson – n Ryan Leatherbury – n Rick Farrand –