WIND POWER STATEMENT OF QUALIFICATIONS

www.RRCcompanies.com experience matters At the heart of a successful project lies a team of experts who can convert their knowledge to project results. Our successful business model starts with listening to our clients’ SOLUTIONS objectives and applying our experience to develop a project approach that optimizes value. We provide solutions our clients can trust, added value through our innovative abilities, and exceptional service. With project YOU CAN experience and a value engineering approach, we provide economical solutions to complex problems. Our engineers, scientists, and surveyors are among the most experienced in their fields. TRUST We believe that experience matters. It’s more than a tag line. It’s how we define ourselves.

Integrity Accountability We conduct our business honestly and ethically. We We expect high standards from our services and take responsibility for both our words and actions and our people. We commit to consistently improve the provide solutions our clients can trust. services we provide and we are accountable for the quality of those services. Exceed Client Expectations We exceed our clients’ expectations with our Innovation & Continuous Improvement exceptional service. We strive to be our clients’ first As the industry evolves and advances, we maintain choice for the industries we serve by delivering more an innovative perspective and seek to continuously value than they expected. improve and incorporate the latest industry advancements. We are constantly expanding our expertise.

Employee Development We understand that exceeding our clients’ VALUES expectations can only be achieved with great people. We invest in professional development of our team and work hard to retain and recruit top talent. DEFINE A Positive Attitude & Teamwork A company benefits most from a collaborative work environment. We recognize that a positive work environment includes one that promotes safety and COMPANY allows for a healthy work-life balance. 01 MARKETS

SOLAR POWER Our team of professionals and support staff has the multi-disciplinary capability OIL & GAS to take on a wide variety of projects serving the utility, industrial, municipal, and commercial sectors. From strategic POWER DELIVERY planning and conceptual design to project management and construction testing, we get the job done.

By hiring key experienced staff and SERVICES following the same founding principal of delivering value, we continue to grow CIVIL ENGINEERING and diversify our services to support the evolving industry. CONSTRUCTION MATERIALS TESTING Our vision is to be the recognized leader ELECTRICAL ENGINEERING of value-added technical services for the energy industry as defined by the GEOTECHNICAL ENGINEERING successes of our clients and our people. LABORATORY SERVICES LAND SURVEYING STRUCTURAL ENGINEERING 02 WIND power At present, we have provided engineering and/or testing services to 350+ utility-scale wind energy projects throughout the United States and into Canada. Since our firm’s inception in 2007, we have been involved in providing engineering and inspection services for over 37,500+ MW of online installed wind energy capacity in the United States. This experience has allowed us to develop strong relationships with many project owners, developers, engineering, procurement and construction (EPC) contractors, and balance of plant (BOP) contractors. These relationships have evolved because of our ability to deliver quality products on even the most technically challenging projects and under very tight project deadlines. We utilize our project experience and value engineering approach to provide economical solutions to resolve complex problems.

Services provided for Wind Energy projects include: ▪▪ Geotechnical Engineering, Subsurface Investigation & Exploration ▪▪ Electrical Engineering Services, Site & System Layout Design ▪▪ Foundation Design Services & Structural Engineering ▪▪ Civil Engineering Designs & Studies ▪▪ Land Surveying Services ▪▪ Construction Materials Testing ▪▪ Quality Assurance Services ▪▪ Advanced Laboratory Testing

03 GEOTECHNICAL ENGINEERING

Professional licensed engineers manage all RRC geotechnical projects, thus helping to reduce our clients’ risks on any project before, during, and after construction. RRC provides comprehensive geotechnical laboratory and field-testing services of soil and bedrock. We determine physical and mechanical properties of subsurface materials for site characterization, geotechnical design, and quality control and performance assessment purposes. We are able to define the risks associated with constructing a project on a given geologic condition and provide unique solutions to ground improvements that often reduce direct costs or save time during construction.

STRUCTURAL ENGINEERING

Our structural engineering staff includes some of the most experienced engineers in the renewable energy industry. We specialize in foundation design solutions for industrial scale wind and solar power plants. This includes not only foundations for the wind turbines and solar panels themselves, but also ancillary equipment and substations. We utilize complex structural analysis software to provide the highest value to project owners and contractors. These analyses methods have also proven very useful in providing value-engineering services to particular projects. Our staff prides itself on being very responsive to client needs, as well as meeting tight schedules. With our experience, we can provide creative and cost-effective solutions to intricate structural engineering problems in the energy industry.

ELECTRICAL ENGINEERING

Our electrical engineering team has extensive experience consulting in the utility power sector and renewable energy markets. We have worked for project owners, developers, and contractors to design electrical infrastructure for wind, PV solar, and conventional generating facilities throughout North America. Our goal is to design systems that are economical, safe, and reliable. No matter the size of the project, we endeavor to provide outstanding and responsive electrical engineering services that help our clients succeed. RRC has full capabilities for substation, detailed studies, collector system, and transmission for projects up to 500kV.

CIVIL ENGINEERING

RRC’s civil engineering group is ready to take your project from conceptual design through construction support. Our experienced staff have created designs for a broad range of clients including wind and solar project owners, developers, and contractors. RRC engineers have extensive knowledge of hydrology, hydraulics, floodplains and scour analysis, roadway design, utility and pavement design. Our firm has also assisted our clients with permitting and prepared Storm Water Pollution Prevention Plans (SWPPP) and Spill Prevention Control and Countermeasure (SPCC) Plans for their projects. RRC uses state of the art software and implements a QA/QC program to deliver solutions and successful completion of projects on time and on budget.

04 QA/QC SERVICES

RRC’s Construction Materials Testing (CMT) group maintains a staff of qualified and certified field technicians capable of providing testing services for projects throughout the continental United States. Our staff has extensive experience in observing and testing excavations, reinforcing steel, roadways, concrete, backfill, grouting, and many other site related operations. Registered professional engineers supervise our technicians, whose on-site presence help act as the eyes and ears of the engineers. This integrated team of engineers and field technicians enables our clients to anticipate and minimize potential issues and delays while keeping a close watch on schedules and costs.

LABORATORY SERVICES

RRC works with an AASHTO accredited geotechnical laboratory in Round Rock, TX. This high-volume capacity, fully equipped laboratory is automated for testing soil, rock, and aggregate materials. Our partner laboratory in Round Rock, TX maintains active accreditations through the AASHTO Accreditation Program. In-house quality assurance programs, prepared in accordance with AASHTO R-18, ASTM C1077 (Aggregates), and ASTM D3740, maintain a high level of accuracy and reproducibility of testing services. Experienced and certified technicians perform laboratory tests, with all testing and evaluations performed in accordance with ASTM, AASHTO, and TxDOT procedures and standards. Our clients can be confident their testing needs are met by certified professionals. Our strong customer service culture drives us to provide accurate and timely testing results that address our clients’ specific needs.

LAND SURVEYING

RRC provides a wide range of land surveying services. We are currently authorized and registered to perform survey work in 16 states and continue to expand our land surveying offerings. All surveys are conducted under the direct supervision of our professional surveyors who have many years of experience in the land surveying industry. Land surveys are conducted using state of the art GPS systems, Drone, 3D Laser Scanning and computer software packages. 05 PROJECT 220 MVA BEARKAT I WIND COLLECTION, SUBSTATION & TRANSMISSION PROJECT SPOTLIGHT

• Location: Garden City, Texas • Installed Capacity: 196.65 MW • Year Commissioned: 2017

The Bearkat I Wind Project involved the design of a 34.5kV collection system, the associated 220 MVA, 345kV – 34.5kV collection substation, and an interconnecting 345kV transmission line terminating at the utility substation (point of interconnection - POI). The substation components included a HV circuit breaker, power transformer, main breaker, collection circuit breakers, reactive circuit breaker, and switchers for the cap bank and reactor. RRC performed foundation and oil containment designs. Steel fabricators provided the substation and transmission structural design, both of which were overseen by RRC as this design capability is a hallmark of the company. Specifications for major equipment were written and presented by RRC for purchase by the client, followed by reviews and recommendations by RRC. The design produced was utility grade, professionally performed and produced, and included a full complement of design deliverables.

The design required the performance of considerable studies in order to verify the integrity and safety of the project. Requirements included those of the Utility (WETT), the Turbine System Supplier (), ERCOT, OSHA, FERC, NERC, and National and Local codes, specifications and standards. Studies performed to verify that all requirements were met included AC Loss, Arc Flash, Cable Ampacity, Bus Calculations, EMF, Grounding, Lightning Shielding, Harmonic Analysis, Illumination, Insulation Coordination, System Protection, Reactive Power and Short Circuit.

The protection system design was comprehensive and included line differential relays, transformer and bus differential relays, overcurrent and undervoltage, RAS, metering etc. An especially challenging task involved considerable interaction with Vestas, WETT, ERCOT, the Client, and the Owner’s Engineer in an effort to ensure that voltage and power factor at the POI met minimum acceptable levels for all possible operational scenarios. This involved sophisticated protection schemes located at the substation that relied on SCADA signals being received over fiber coming from both the Utility and Vestas systems. The protection system included a Remedial Action Scheme (RAS) for emergency isolation of the Vestas turbines in the event of specific system operating conditions (FERC requirement).

Reactive response, for meeting the POI voltage and power factor requirements involved the design of Cap Banks and a Reactor on the medium voltage side of the substation with switchers that responded to protection system commands.

Deliverables for each of these design packages involved all physical and electrical design drawings, specifications for the purchase of equipment and systems, bills of material, studies and other documentation. These provided the necessary documentation and design drawings for construction of the facility from the generator step up transformers, through the substation, and on to the POI at the electric utility.

06 MEADOW LAKE PROJECT • Location: White County, Indiana • Year Commissioned: 2009-2010 SPOTLIGHT • Installed Capacity: 500.85 MW

With over 300 wind turbine generators and a power generating capacity of over 500 MW for this four-phase development, the is one of the largest wind projects in the United States. Each phase was supplied with turbines from different manufacturers including Acciona, General Electric (GE), Suzlon, and Vestas, and construction of the individual phases was awarded to different Balance of Plant (BOP) contractors. RRC provided geotechnical engineering and structural engineering for the project, covering all stages from planning and final development through construction.

RRC’s geotechnical engineering services included subsurface exploration services comprised of conventional soil borings, continuous rock coring, Cone Penetrometer Tests (CPT), and specialized geophysical surveys comprised of Multi-Channel Analysis of Surface Waves (MASW) surveys, along with engineering analyses and design. Due to the prevalence of shallow groundwater at the project site, numerous temporary piezometers were installed and monitored to facilitate foundation buoyancy calculations and to provide guidelines for site dewatering during construction. Soft or compressive clay soils were encountered during the subsurface investigation phase, requiring deep ground improvement to support the proposed wind turbine generator loads at several tower sites. Rammed Aggregate Pier (RAP) systems were utilized to stiffen deep marginal soil deposits; this process involved constructing high density, stiff RAPs to control settlement and improve bearing pressures and rotational stiffness.

Structural engineering services included design and sizing of concrete, reinforcing steel, embedment ring, and anchor bolts for the different wind turbine generator foundations to adequately resist the loadings provided by the turbine suppliers. Due to the scale of the project, it was important for RRC to create the most economical design possible in order to provide cost savings over the many turbine sites. As part of the effort to economize project construction, each individual phase utilized multiple foundation sizes based on differing soil bearing pressures and groundwater conditions at the turbine sites. RRC developed 11 different turbine foundation designs for the overall project.

Coordination of the different foundation sizes, as well as providing necessary provisions for soil corrections and deep soil improvement techniques, was critical to achieving an economical and well-planned project. Working together as a team, RRC’s geotechnical and structural engineers delivered a sound yet economical turbine foundation design for the Meadow Lake Wind project.

07 SHEPHERDS FLAT WIND FARM PROJECT • Location: Gilliam and Morrow Counties, • Year Commissioned: 2012 • Installed Capacity: 845 MW SPOTLIGHT

The Shepherds Flat Wind Farm is located near the City of Arlington within Gilliam and Morrow Counties in Oregon. The project consisted of construction and installation of 338 GE 2.5 MW wind turbine generators with a total nameplate capacity of 845 MW. This is the one of the largest wind farms constructed in a single phase in the world at the time of publication.

RRC provided geotechnical engineering, structural engineering, and construction materials testing for the project. From a geotechnical engineering point of view, the subsurface soils and bedrock conditions were challenging across the site and ranged from collapse-prone soils to basalt bedrock exposed at relatively shallow depths. The foundation design also required close coordination with RRC’s geotechnical engineers for sites where Deep Dynamic Compaction (DDC) was implemented to alleviate the subsurface soil collapse potential, as well as providing a plan for the execution of the DDC. Due to the large scale of the project, it was particularly important for RRC to optimize and provide the most economical foundation designs. RRC provided the design and sizing of the concrete, reinforcing, embedment ring, and anchor bolts for the wind turbine foundations to adequately resist the loadings provided by the turbine supplier.

RRC provided continuous observations and testing services during construction of the project to support compliance with geotechnical and structural engineering specifications. These services included interaction between members of the Construction Materials Testing (CMT) group and the geotechnical and structural engineers of record in recommending remedial measures when issues arose in the field during construction of turbine foundations. The remedial measures provided by RRC were sound from an engineering point of view, cost effective, and helped maintain the construction schedule.

08 OFFICE LOCATIONS

Hobbs, New Mexico Round Rock, Texas 701 S Cecil Street 3801 Doris Lane, Suite A Hobbs, NM 88240 Round Rock, TX 78664 575.602.2424 512.992.2087

Maple Grove, Minnesota Tualatin, Oregon 11282 - 86th Avenue North 7591 SW Mohawk Street Maple Grove, MN 55369 Tualatin, OR 97062 612.225.1240 503.379.0145

Midland, Texas RRC Power & Energy, LLC 3011 S County Road 1260, Suite A www.RRCcompanies.com Midland, TX 79706 432.561.5495

09 www.RRCcompanies.com