geophysical services statement of qualificationsgeological and geotechnical knowledge and experience...

CORPORATE HEADQUARTERS 1129 West Governor Road P.O. Box 797 Hershey, PA 17033‐0797

REGIONAL OFFICES State College, PA

Pi sburgh, PA Wilkes‐Barre/Scranton, PA

Columbia, MD

www.armgeophysics.net

GEOPHYSICAL SERVICES

STATEMENT OF QUALIFICATIONS

2018

UST1 UST2 UST3

Buried Coal Mine Void, Eastern, PA




Columbia, MD


GEOPHYSICAL SERVICES

H

ARM Geophysics provides a full range of both surface and borehole geophysics. ARM personnel have significant experience performing geophysical surveys for a wide variety of inves ga ons across the United States. These sites have been situated in varying terrains having many different types of subsurface condi ons. Our geophysicists apply their geological and geotechnical knowledge and experience to provide the most cost effec ve surveys. In numerous applica ons, geophysics can provide cost savings to you and/or your clients. Our borehole geophysical group provides state of the art logging capabili es including a full suite of standard logging tools and Op cal and Acous c Televiewer, Neutron, Density, Gamma, and Heat Pulse Flowmeter. ARM's logging trucks can log to a depth of 1200 meters. The surface geophysics group performs inves ga ons for a variety of markets including Environmental, Geotechnical, Groundwater Resource, and U lity Mapping. ARM personnel have capabili es and experience to perform Seismic, GPR, Electrical Resis vity, Gravity, Magne c and Electromagne c Surveys. This wide variety of capabili es allow ARM geophysicists to select and perform the best and most appropriate survey for your site. ARM Geophysics seamlessly integrates geophysics with geology, hydrogeology, and geotechnical engineering exper se to provide a level of service un‐matched by our compe tors.

ARM’s Primary Service Markets Include:

Oil and Gas

Environmental

Geotechnical

Groundwater Resources

Dam Safety




Columbia, MD


BOREHOLE GEOPHYSICAL LOGGING AND IMAGING

O

Borehole geophysical logs are con nuous and objec ve records that provide valuable informa on regarding the physical proper es of soil, rock, and groundwater. Some of the important informa on obtained from logging or imaging includes: Lithology, thickness, and lateral con nuity of aquifers and confining layers Structural informa on such as strike and dip of lithologic contacts and bedrock fractures Hydrogeologic informa on including iden fica on of water producing and receiving zones, flow rate measurements, and es mates of permeability, porosity, moisture content, and specific yield Engineering proper es such as bulk density, Poisson’s Ra o, Young’s Modulus, Bulk Modulus and Shear Modulus Loca on, extent, and volume of petroleum and mineral resources

Op cal Image

Acous c Amplitude

Acous c Travel Time

Fracture Trace




Columbia, MD


DIGITAL OPTICAL TELEVIEWER (DOPTV)

B

The DOPTV provides excep onally high resolu on images of the borehole walls using a sophis cated op cal imaging system. The images are processed to provide complete feature analysis including strike, dip, frequency, and fracture aperture. The DOPTV is some mes confused with downhole video cameras. Downhole video cameras are constrained to a downward looking camera. In order to view the borehole wall, a side‐looking mirror deflects the field of view. However, due to the distor ng effect of an oblique view of the cylindrical borehole wall, it is not possible to use such imagery for determina on of geologic structure, even if the camera orienta on were known. The DOPTV probe combines the axial view of a downward looking digital imaging system with a precision ground hyperbolic mirror to obtain an undistorted 360‐degree view of the borehole wall. The probe records one 360‐degree scan at 0.003‐ depth intervals. Each scan is aligned with respect to True North and digitally stacked to construct a complete, undistorted, and oriented image of the borehole walls. The data are 24‐bit true color, which facilitates lithologic determina on as part of the interpreta on. Since the acquired image is digi zed and properly oriented with respect to borehole devia on and tool rota on, it allows accurate determina on of strike and dip of structural and stra graphic features.

S000E / 09W

N028W / 75NE

S043W / 58NW

Applica ons:

Contaminant Migra on Studies

Structural and Stra graphic Mapping

Locate Water Producing Zones

Nuclear Waste Repository Studies

Slope Stability and Founda on Studies

Tunnel Hazard Predic on

Mining

Dam Seepage and Safety Studies




Columbia, MD


WELL LOG ANALYSIS

B

OVERVIEW ARM offers sophis cated well log analysis and presenta on services to provide a more complete understanding of the acquired data. High quality logs are presented on con nuous Z‐fold or roll plots. The logs are usually annotated to show interpreta ons of significant features. Large format composite logs can be constructed showing all log data on one plot to facilitate interpreta on and correla on.

STRUCTURAL ANALYSIS Structural analysis of oriented op cal and acous c televiewer data is performed including: Sta s cal analysis using Fisher sta s cs Stereographic (stereonet) presenta on Rose diagrams of bedding or joint strike Mean orienta on of individual joint sets

DELIVERABLES A full report detailing methods, interpreta on, and conclusions can be provided Final logs are presented in con nuous, full‐color Z‐fold or large format plots Free so ware is provided that allows the client to view, analyze, and print addi onal copies Logs are also provided in digital PDF format Log data can be exported in a variety of digital formats to allow integra on with GIS systems, drawing packages, and other logs analysis so ware




Columbia, MD


GEOLOGIC AND PETROPHYSICAL APPLICATIONS

O W L I

Borehole Image Analysis Iden fica on of structural and sedimentological features on image logs Iden fica on of drilling‐induced fractures and borehole breakouts Determine orienta on of planar features such as bedding planes and fractures Structural Analysis of Dip Meter or Image Logs

Determine mean strike and dip of bedding and fracture sets Analyze ver cal and lateral changes in orienta on to evaluate geologic structure and sedimentology Spherical sta s cs using Fisher analysis Terzaghi analysis to account for direc onal biasing in ver cal wellbore Forma on Evalua on Determina on of porosity, water satura on and shale volumes Clay type es ma on based on spectral gamma log Cement & Casing Evalua on Analysis of acous c amplitude to determine the effec veness of cement bond

Op cal televiewer analysis to iden fy casing defects Acous c imaging to evaluate casing integrity and travel me analysis to provide high‐resolu on images of casing deforma on Acous c Analysis Determina on of compressional, shear or, Stoneley wave veloci es

Compute amplitude and a enua on of waveform energy to evaluate fractured zones and infer permeability Geomechanical Analysis Evaluate in‐situ stresses using borehole breakout analysis Determine mechanical rock proper es such as Poisson's Ra o, Young's Modulus, Bulk Modulus and Shear Modulus Subsurface Mapping Three‐dimensional modeling of petrophysical parameters Shaded relief isopach and

isochore maps Sand‐shale distribu on maps Stra graphic correla on Fence diagrams & cross sec ons




Columbia, MD


ENVIRONMENTAL GEOPHYSICAL SERVICES

H ‐

ARM Geophysics (ARM) is an experienced team of geophysicists that provide cost‐effec ve solu ons to a wide variety of projects. Since its incep on, ARM has performed a broad range of successful inves ga ons throughout the United States and overseas. BENEFITS OF USING GEOPHYSICS Non‐invasive Cost‐effec ve solu ons Reduce total project me Locate borings or excava ons at strategic sites Extend subsurface informa on Improve confidence levels Minimize health risks Correlate informa on between borehole sites Minimize impact to site and opera ons SERVICES AND APPLICATIONS Locate underground storage

tanks (USTs) Private u lity markouts Environmental site

characteriza on Delineate waste burial sites Map buried drums Delineate aquifers or confining

layers Map conduc ve or non‐

conduc ve contamina on plumes

Dam seepage & safety studies Geotechnical engineering

inves ga ons

UST1 UST2 UST3




Columbia, MD


GROUND PENETRATING RADAR SERVICES

H ‐

ARM Geophysics (ARM) uses Ground Penetra ng Radar (GPR) as a cost‐effec ve method that can be used to map underground u li es, pipes, storage tanks, drums, and voids. Since the GPR is mapping features with different dielectric proper es, the method can be used as a cost‐effec ve method to find both metallic, non‐metallic, and geologic features. ARM u lizes Geophysical Survey Systems Inc. SIR3000GPR with a 400 Megahertz antenna. The GPR unit is mounted on a three‐wheeled cart with a built‐in survey wheel. This design allows for quick and accurate collec on of GPR traverses in the field. In areas where the use of a cart system is not possible, the GPR unit and antenna can be removed and used with a 30‐meter cable. The main GPR unit is designed for use with different antennas depending on site and project requirements. The 400 MHz antenna is considered to be the work horse of the industry. It has a depth capability, depending on the soil composi on, of up to 13 feet with good shallow resolu on of targets, such as u li es and voids. A 200 MHz antenna can resolve targets up to 20 feet below the ground surface. The 1500 MHz antenna is used exclusively for scanning concrete for rebar, wire mesh, and conduits within concrete. ARM has also been using GPR for a variety of environmental inves ga ons including underground storage tank (UST) surveys, buried drum inves ga ons, and subsurface u lity mapping. ARM geophysicists perform spot clearing for borehole drilling as well as site wide u lity mark‐outs on private property. Use of non‐intrusive GPR u lity mark‐outs can provide both increased project safety and avoidance of u lity repair and replacement costs.

Applica ons:

UST Surveys

Buried Drum Inves ga ons

Subsurface U lity Mapping

Sinkhole Void Inves ga ons

Fracture Delinea on

ARM Geophysicist scanning with GPR for sub‐surface voids and poten al collapse features.

Image depic ng grave loca ons using GPR with a 500 MHz antenna

GPR record showing iden fied u lity and UST

UST

Water Line




Columbia, MD


UTILITY MAPPING SERVICES

H ‐

Subsurface structure mapping has become an essen al tool to engineers, designers, and industrial facili es. Exis ng underground structures create significant project risks during soil boring, well drilling, new construc on, retrofits, and remedia on projects. These risks include death, injury, property damage, environmental releases, and project delays. ARM’s mapping toolbox includes four methods in order to provide a series of checks and balances which will reduce the risk of missing an underground u lity, due to the depth it

is buried, the soil type and condi ons, the piping materials and other site‐specific condi ons which may mask the existence of an underground u lity. These include ground penetra ng radar (GPR), metal detectors, radio/audio frequency u lity locators, and 50/60 Hertz electrical line locators.

Applica ons:

Iden fy Buried Hazards Prior to Drilling or Excava ng

Determine Preferen al Migra on Pathways for Surface Spills

Map U li es for “As‐Built” Con‐struc on Design Support

Locate Pipeline Leaks or Voids

Reinforced Concrete Slab

Inches

Inches

0

0

10

10

20

20

Rebar

Conduit

Output of three dimensional GPR imaging performed to map obstruc ons in concrete slabs

Three dimensional GPR sur‐veying to map embedded haz‐

ards and obstruc ons

High‐resolu on u lity mapping using U lityScan GPR System

Mapping conduits with radio‐frequency pipe locators




Columbia, MD


MULTI‐CHANNEL ANALYSIS OF SURFACE WAVES (MASW) SURVEYS

H ‐

ARM Geophysics provides Mul ‐Channel Analysis of Surface Waves (MASW) surveys for many applica ons. MASW is a new seismic technique that can be used in many places where conven onal seismic refrac on methods can not be used. Data collec on typically consists of a seismograph, geophones and a sledgehammer for a source. Rather than analyzing the primary (P) wave as in refrac on surveys the MASW method uses shear wave or S waves that are generated in a surface seismic wave. MASW is typically effec ve to a depth of approximately 30‐meters. ARM has u lized MASW data to provide shear wave maps of the subsurface for earthquake design site classifica on (Site class E, D, or C) per the 2003 Interna onal Building Code. ARM has also u lized MASW to map voids, top of bedrock, and so or weaker bedrock zones. The figure below depicts a MASW profile showing top of bedrock and areas of weaker or less competent bedrock. This informa on is important

MASW Provides:

Void Mapping

Abandoned Mine Loca on

Top of Bedrock

Shear Wave Data

Earthquake Design Data

Bedrock Fracture Zones

Geotechnical Engineering Parameters

Dep

th B

elo

w G

roun

d S

urfa

ce (

feet

)

Horizontal Distance (feet)




Columbia, MD


SEISMIC REFRACTION SURVEYING

H ‐

ARM Geophysics uses seismic refrac on methods to determine bedrock depth and rippability as well as to delineate fractures. The earth is made up of various materials that have specific physical proper es. One of the proper es is the rate at which compressional energy travels through the ground. This energy is generated by a sledge hammer hi ng against a metal plate on the ground, massive weights thrown against the ground, or even by explosives. As the energy travels through the subsurface, it will reflect and refract at interfaces between different subsurface layers. A seismograph measures the travel me from the source to ta set of geophones which are at a known distance from the source. Given the travel me and the distance, a seismic layer model can be obtained. From the seismic model, rippability can be es mated. Rippability is a measure of the ease at which rock is excavated. Excava on of materials that are not rippable requires drilling and blas ng. The seismic velocity of earth materials is directly related to their strength and hence their rippability.

Applica ons:

Top of Bedrock

Water Table Depth

Rippability

Fracture Delinea on

Seismic refrac on layer model

Seismic velocity map showing areas of less competent bedrock

Ele

vatio

n (

fee

t)

Horizontal Distance (feet)




Columbia, MD


EM31 TERRAIN CONDUCTIVITY SURVEYS

H ‐

ARM Geophysics performs Terrain Conduc vity Surveys for a variety of applica ons. ARM uses a Geonics EM‐31DL conduc vity meter. For environmental applica ons, the EM31 data can be used to map landfills, buried drums, and shallow groundwater contamina on. It also has geotechnical applica ons such as soil thickness and possible sinkhole or pinnacle loca ons in karst terrain. Where possible, ARM integrates the data collec on with Global Posi oning Systems (GPS) with at least sub‐meter accuracy. Depending on how the data are collected, the effec ve depth of the system is approximately 7.5 or 18 feet. The EM‐31 is a non‐intrusive conduc vity measuring device, and data can be collected almost as fast as the operator can walk. The EM‐31 provides two measurements, Quadrature (apparent conduc vity) and In‐phase data (metallic response). The data are digitally recorded and periodically down‐loaded to a field computer for quality assurance and preliminary interpreta on. Data interference's may occur near u lity lines and metal structures, so an experienced geophysicist is essen al. At the conclusion of a survey, the EM‐31 data is interpreted and mapped as shown in the examples on this page. The EM‐31 data are contoured, and presented in a fashion that will show the interpreted subsurface features (ie; areas of concern). An EM‐31 survey, which measures the apparent conduc vity of the subsurface, can be used to es mate the rela ve amounts of soil and rock within the area of measurement. Higher apparent conduc vi es imply a thicker soil cover, while lower apparent conduc vi es suggest a greater effect from bedrock, therefore indica ng a thinner soil cover. Discrete areas of elevated conduc vity within a limited areal extent can be an indicator of subsurface sinkhole development ac vity. EM‐31 surveys can also be used to map u li es, drums, waste pits, USTs, and landfills. Each of these features is highly conduc ve and can be iden fied in the EM‐31 data.




Columbia, MD


ELECTRICAL RESISTIVITY IMAGING

G

Electrical Resis vity Imaging (ERI) is a geophysical method that provides a two‐or‐three‐dimensional resis vity image of the subsurface. ERI can provide informa on about dis nct subsurface boundaries and condi ons that other geophysical methods cannot. ARM u lizes an automa c mul ‐electrode switching system, which passes an electrical current along mul ple paths at various depths and measures the resul ng associated voltages between electrodes. Apparent resis vity measurements are recorded from all possible combina ons between two electrodes. Processing of the data using resis vity inversion so ware provides a subsurface model with a more unique and quan ta ve interpreta on of the data. New advances in ERI methods have included three‐dimensional surveys and cross‐borehole surveys which make this technique more successful for subsurface characteriza on. In areas where very complex three‐dimensional subsurface features are present, three‐dimensional survey data collec on techniques and data inversion so ware can provide more accurate subsurface models.

Applica ons:

Map Top of Bedrock

Iden fy Poten al Sinkhole, Void and Cavern Loca ons

Map the Lateral and Ver cal Lim‐its of Waste Pits and Landfills

Locate Preferen al Groundwater Flow Paths in Sand & Gravel Channels and Fracture Zones

Iden fy Bedrock Fractures




Columbia, MD


THREE‐DIMENSIONAL ELECTRICAL IMAGING

H ‐ G

Electrical Resis vity Imaging (ERI) is a geophysical method that can provide informa on about dis nct subsurface boundaries and condi ons. It is typically conducted to measure the electrical resis vity proper es of the subsurface materials to transmit or conversely restrict electrical current. The informa on collected during an ERI survey is used to determine the electrical proper es of the subsurface materials which can be interpreted to represent the loca on of rela ve changes in geologic and soil strata, the top of bedrock, areas of fractured or weathered bedrock, changes in rock composi on or competence, and plumes of contamina on. The method can also be used for mapping hydrogeologic and mineral resource boundaries. Advances in ERI methods include three‐dimensional (3D) surveys which make this technique more successful for subsurface characteriza on. In areas where very complex 3D subsurface features are present, three‐dimensional survey data can be collected. ARM’s 3D inversion so ware provides be er subsurface models, which can be analyzed in 3D visualiza on so ware. The 3D data blocks can be sliced along ver cal or horizontal planes to interpret the data in either profile or map view.

Applica ons:

Map Top of Bedrock

Iden fy Poten al Sinkhole, Void and Cavern Loca ons

Map the Lateral and Ver cal Lim‐its of Waste Pits and Landfills

Locate Preferen al Groundwater Flow Paths in Sand & Gravel Channels and Fracture Zones

Iden fy Bedrock Fractures

3D Image of Sinkhole




Columbia, MD


GEONICS EM61 MK2 SERVICES

H ‐ G

ARM Geophysics (ARM) u lizes the Geonics EM61 MK2 high‐sensi vity metal detectors for a variety of applica ons ranging from UST loca on to UXO detec on and discrimina on. ARM can operate the EM61 within a variety of different pla orms. ARM has mapped thousands of acres of combined towed array and man‐portable EM‐61 data at loca ons across the country and interna onally. ARM can integrate the EM61 with a variety of posi oning systems such as RTK Global Posi oning Systems (RTK) and Robo c Total Solu ons (RTS). ARM can complete processing, interpre ng, and deliverables preparing on our data sets or support processing efforts of data collected by other field personnel as well. ARM is also capable of conduc ng third party geophysical QC/QA.

Applica ons:

UST and Drum Loca on

U lity Mapping

Muni ons Response Mapping

Waste Pit and Landfill Mapping

ARM personnel performing towed array data collec ons

EM61 data results showing poten al targets

Man‐portable survey in wooded terrain




Columbia, MD


GEOSYNTHETIC LINER LEAK DETECTION SURVEYS

Mul ple Large Public Explora on & Produc on Companies, Appalachian Shale Play ARM is providing geophysical services to mul ple operators across the Appalachian Shale Play to support their opera ons and comple ons programs. In 2014, ARM completed over 1,000,000 square feet (sf) of liner surveys for construc on quality assurance and integrity tes ng . These methods can detect holes as small as 1 millimeter (1 mm) in diameter and can result in substan al cost savings by facilita ng liner repairs and cost avoidance in minimizing the likelihood of leaks due to installa on damage and manufacturing defects.

Exposed Geomembrane Leak Detec on Surveys: ARM has completed Impoundment/Liner Leak Detec on Surveys on over 1,000,000 square feet (sf) of exposed geomembranes in 2014 using ASTM Standard D7002. ARM can also provide leak detec on surveys using:

The Conduc ve‐backed Geomembrane Spark Tes ng Method (ASTM D7240), and

The Water Lance Method (ASTM D7703). The water puddle method detects electrical paths through holes in the geomembrane liner using a small amount of water that is put in contact with the liner. A squeegee is used to push the water over the liner and a low voltage

electrical supply is connected to earth ground outside the lined area and to the leak detector. When a hole is encountered, electrical current flows through water in the leak contac ng earth ground. The current is monitored using a high‐sensi vity electronic detector that converts the increase in current to an audible tone.

ARM comple ng an exposed geomembrane leak detec on survey at an impoundment in Butler County, Pennsylvania.




Columbia, MD


BOREHOLE GEOPHYSICS PROJECT PROFILE Northvale, New Jersey

ARM Geophysics (ARM) was hired by ENSR Interna onal to perform geophysical well logging in four wells in Northvale, New Jersey. The objec ve was to characterize the presence and orienta on of planar features such as joints, fractures and bedding planes, and to locate and characterize water‐producing fracture zones. ARM performed borehole logging in four wells on the site. The logging measures various geophysical and op cal proper es of the well. The following suite of logs were run: Op cal Televiewer Caliper Fluid Temperature Fluid Resis vity Natural Gamma Spontaneous

Poten al Resis vity Single Point

Resistance Heat Pulse Flow

Meter Joint and bedding plane sets were characterized using the televiewer data. Data collected with the op cal televiewer, fluid temperature, fluid resis vity, forma on resis vity and heat pulse flow meter allowed ARM to successfully iden fy water producing and water‐receiving zones. WellCAD® so ware was used to process the data once collec on was complete. The so ware package allowed for filtering, digitally enhancing (highligh ng fractures and joints), organizing and prin ng the data in log format.

Reference: ENSR Interna onal Mr. Ma hew Cousino 412‐261‐2910

Sec on of ARM’s Hydrolog combining caliper, electrical resis vity, heat‐pulse flow meter and other log curves




Columbia, MD


CONFIDENTIAL CLIENT MARYLAND

B

ARM was hired by a confiden al client to take part in a hydrocarbon release inves ga on and remedia on in Maryland. The objec ve was to characterize the physical proper es of the soil and bedrock, locate water‐producing zones, determine the ver cal flow rate of borehole fluids, and iden fy other subsurface anomalies, such as fractures and folia ons, which can indicate preferen al pathways for groundwater and contaminant movement. ARM performed both surface and borehole geophysics at this site. The geophysical data was intended for use by the client to supplement the development of a conceptual site model. ARM performed borehole logging in twelve wells and one core hole on and in the vicinity of the site. The logging measures various geophysical and op cal proper es of the well. In order to collect the best and most data possible, the following suite of logs were run: Op cal Televiewer Acous c

Televiewer Caliper Fluid Temperature Fluid Resis vity Natural Gamma Spontaneous

Poten al Resis vity Single Point

Resistance Heat Pulse Flow

Meter WellCAD® so ware was used to process the data once collec on was complete. The so ware package allowed for filtering, digitally enhancing (highligh ng fractures and joints), organizing and prin ng the data in log format.

Reference: Confiden al Client




Columbia, MD


BOREHOLE GEOPHYSICS PROJECT PROFILE D , G

ARM Geophysics was hired by the Atlanta CH2M HILL office to take part in their Conceptual Site Model inves ga on of an industrial facility in northern Georgia. The purpose of the borehole study was to iden fy and characterize planar features such as bedding planes or folia on, as well as fractures. A second objec ve was to locate and characterize water producing and receiving zones within the wells. This assisted in placement of screened intervals and iden fying poten al migra on pathways in the bedrock. ARM performed logging in six wells at the site. Drilling ac vity was occurring concurrently, and it was necessary for ARM personnel to communicate and coordinate with the drilling company to most effec vely and efficiently collect data. Televiewer images and more tradi onal geophysical data were obtained. Data were processed using WellCAD® so ware. If condi ons allowed, the following suite of logs was run: Op cal Televiewer Acous c Televiewer Caliper Natural Gamma Ray Fluid Temperature Fluid Resis vity Spontaneous Poten al Forma on Resis vity Single Point Resistance Heat Pulse Flowmeter

Reference: CH2M HILL Mr. David Nelson (404) 915‐5021

Example op cal and acous c televiewer log

Example op cal and acous c televiewer log




Columbia, MD


UST AND UTILITY MAPPING‐PROJECT PROFILE K C H ‐W ’ G , I .,

L , P

ARM Geophysics (ARM) completed a Phase II Environmental Site Assessment (ESA) at a property known as the Witmers’ Greenhouses, Inc. site, which is located in East Lampeter Township, Lancaster County, Pennsylvania. The purpose of this inves ga on was to determine whether significant environmental impairment, which may represent a financial liability to the prospec ve purchaser, existed at the site. A Phase I ESA iden fied the presence of four 10,000‐gallon No. 2 fuel oil underground storage tanks (USTs), one 500‐gallon gasoline UST, one 250‐gallon gasoline UST, and various u li es were located on the site. ARM conducted a geophysical inves ga on to determine the loca on, orienta on, and size of each UST. The inves ga on involved the use of a GSSI SIR 3000 ground penetra ng radar with a 400 megahertz antenna. The purpose of the geophysical inves ga on was to map the loca on of the USTs and any on‐site

u li es and piping prior to the installa on of soil borings. All six USTs were located and the footprint of the USTs and u li es were painted on the ground surface. ARM completed a subsurface inves ga on in the vicinity of the hea ng oil and gasoline USTs to determine if the USTs impacted the subsurface soils surrounding each of the USTs. The inves ga on involved the use of a GeoProbe, and consisted of the installa on of up to four soil borings around the perimeter of each UST area, one on each side of each UST area. The borings were advanced to the top of bedrock, or to groundwater, whichever was encountered first.

Reference: Keystone Custom Homes Greg Hill, Project Manager 717‐464‐9060

UST

Water Line

GPR record showing iden fied u lity and UST

ARM geophysicist collec ng GPR data




Columbia, MD


BURIED DRUM INVESTIGATION PROJECT PROFILE F K A F B

S A , T

ARM Geophysics (ARM) conducted a geophysical inves ga on for Science Applica ons Interna onal Corpora on (SAIC) at the former Kelly Air Force Base in San Antonio, Texas. Several monitoring wells and recovery wells had been installed in areas iden fied as D‐4 and D‐5 at the base. High concentra ons of organic solvents were detected in the groundwater from these wells, however the source of the solvents could not be determined. During the ini al site reconnaissance, par ally exposed drums were observed in three loca ons and historical informa on indicated the possible presence of a former burn pit in the vicinity of D‐5. ARM was contracted to conduct an electromagne c survey to iden fy buried drums in the vicinity of areas D‐4 and D‐5. An EM‐61 was used in conjunc on with a global posi oning system (GPS) to survey the area. EM‐61 data were collected along traverses oriented approximately northeast to southwest at 10‐foot intervals. The results of the EM survey indicated four anomalies which were interpreted to poten ally be buried drums at D‐4. Three of the anomalies corresponded with loca ons of par ally exposed drums. The second site, D‐5 indicated one anomaly of concern. Historical informa on indicated area D‐5 was once a burn pit.

Reference: SAIC Yuegun Jin 210‐731‐2291

EM‐61 data showing areas of concern




Columbia, MD


USACE‐B D F I G , P

ARM Geophysics (ARM) provided geoenvironmental, geophysical, and geotechnical inves ga on services to the U.S. Army Corps of Engineers (USACE), Bal more District under an Indefinite Delivery Contract for Geotechnical and Environmental Site Inves ga ons for Various Sites within the North Atlan c Division. ARM performed a geophysical inves ga on at Fort Indiantown Gap located near Harrisburg, PA to delineate the ver cal and horizontal extent of waste disposal at a Former Sanitary Landfill. The project was managed by the Bal more District USACE for the Pennsylvania Department of Military and Veterans Affairs, in support of a landfill closure project. Groundwater monitoring was required around the perimeter of the landfill in order to properly close the facility. ARM used EM‐31 terrain conduc vity and electrical resis vity imaging (ERI) techniques to iden fy the extent of the landfill material, characterize soil and bedrock condi ons, and iden fy other discernible anomalies such as underground u li es and other features. During the first stage of the inves ga on ARM performed an EM‐31 terrain conduc vity survey to establish the lateral limits of the landfill. The second stage of the inves ga on was to perform an ERI survey to determine physical characteris cs of the landfill such as depth and presence of high and low resis vity materials; and to characterize soil and bedrock condi ons. The lateral and ver cal extent of the former landfill were delineated as were isolated anomalies, suspected of being former burn areas. Based on the results of the geophysical survey, ARM suggested appropriate loca ons for groundwater monitoring wells and later installed the monitoring wells.

Reference: USACE, Bal more District Ms. Jean Pe y, Contrac ng Officer 410‐962‐2587

Diagram showing the results of the EM survey




Columbia, MD


OIL & GAS SUPPORT‐PROJECT PROFILE C C , B C , P

Seismic Refrac on Survey

ARM provided wireline geophysical logging services in Bradford County, PA to support this client’s environmental inves ga on of a stray‐gas migra on and a release of flowback fluids related to natural gas well drilling and development opera ons in the Marcellus Shale forma on:

High resolu on op cal and acous c televiewer logging:

ARM Geophysics’ wireline logging completed high‐resolu on op cal televiewer (OTV) and acous c televiewer (ATV), gamma ray, fluid resis vity, normal resis vity, fluid temperature, heat‐pulse flow meter, and caliper logs.

Determined bedding plane and fracture orienta on and dip angles with polar and rose diagrams.

Iden fied groundwater bearing zones in groundwater monitoring wells and residen al water wells.

ARM completed geologic interpreta on, cross sec ons, and fence diagrams using the well log data to support the inves ga on and remedia on.




Columbia, MD


OIL & GAS SUPPORT‐PROJECT PROFILE C C , T C , P


ARM provided wireline geophysical logging services in Tioga County in Pennsylvania to support their natural gas well drilling and development opera ons in the Marcellus Shale forma on:

High resolu on op cal televiewer logging: Installed environmental test well to determine if mineable coal seam was

present at proposed drill pad site. One of ARM’s licensed professional geologists completed a detailed geologic drilling log.

ARM Geophysics’ wireline logging completed high‐resolu on op cal televiewer (OPTV), gamma ray, fluid resis vity, normal resis vity, fluid temperature, and caliper logs.

Determined bedding plane and fracture orienta on and dip angle. Iden fied poten ally mineable coal seam. Successfully grouted and abandoned the environmental test well in

accordance with PADEP guidelines.




Columbia, MD


OIL & GAS SUPPORT‐PROJECT PROFILE C C , M K C , P


ARM provided electrical resis vity imaging (ERI) services in McKean County in Pennsylvania to support their natural gas well drilling and development opera ons in the Marcellus Shale forma on:

High resolu on ERI surveys: Completed desk‐top hydrogeological analysis and structural geology study. Designed and completed ERI surveys to accurately map fracture zones at

depth. Processed and analyzed ERI data to iden fy and priori ze best water well

loca ons. Drilled, developed, and supported permi ng of new water supply wells for

natural gas drilling and comple ons efforts.




Columbia, MD


REMEDIAL INVESTIGATION/ISRA ‐PROJECT PROFILE A C , I .

N , N J

ARM is performing a large and complex Remedial Inves ga on (RI) for a chemical produc on facility in northern New Jersey. A detailed work plan plus health and safety plan were developed, then reviewed and approved by the NJDEP. ARM u lized a GSSI Sir 2000 Ground Penetra ng Radar with a 400 megahertz antenna and Geonics EM‐31 Terrain conduc vity meter to locate the buried wastewater lagoon. The EM‐31 data were collected in both ver cal and horizontal dipole modes. The EM‐31 data were also collected integrated with a Trimble Pro XRS GPS system to provide accurate loca ons of the EM‐31 data measurements. Using the GPR and EM‐31 data, the ARM geophysicist marked the limits of the lagoons with paint and flags while s ll on site. ARM u lized cost‐effec ve inves ga on techniques such as Geoprobe soil sampling; collec on of grab groundwater samples through the Geoprobe; and soil probes to characterize and delineate the buried wastewater lagoon. ARM performed air monitoring with a Photo Ioniza on Detector (PID) during all intrusive ac vi es. ARM installed 40 Geoprobe soil borings, collected over 60 samples for chemical analysis from over 30 different areas of poten al concern, installed 10 monitoring wells with a hollow stem auger, and collected dozens of groundwater samples. ARM performed decontamina on procedures on all equipment. Used Personal Protec on Equipment (PPE), and other wastes were containerized and disposed of per the approved Health and Safety Plan.

Reference: Alliance Chemical, Inc. Mr. Dick Braun, V.P. of Op‐era ons 201‐945‐5400

EM‐31 Apparent Conduc vity Map




Columbia, MD


DRUM STORAGE AREA INVESTIGATION PROJECT PROFILE

S W M . U 4, C , V

ARM Geophysics supported MWH by performing an inves ga on at the Solid Waste Management Unit (SWMU) 4 Drum Storage Area for a confiden al client in Chesterfield, Virginia facility. The objec ve of the geophysical inves ga on at SWMU 4 was to delineate the Marl layer in the subsurface and determine if there were undula ng layers in the Marl that could allow vola le organic compound (VOC) contamina on to pool in the subsurface and to evaluate if the Marl layer con nued across the site to the creek. To characterize subsurface physical characteris cs of this site, ARM completed a geophysical survey in the SWMU 4 area u lizing the ground penetra ng radar (GPR) and electrical resis vity imaging (ERI). The 400‐Mhz antenna was used during the GPR survey of the inves ga on area. ARM u lized the IRIS Instruments Rascal Junior system with 84 electrodes to perform the EI survey. Seven traverses were surveyed to accurately iden fy the Marl layer topography.

Reference: MWH Ms. Erin Draper 610‐407‐7930

Profile showing the results of the ERI survey

geophysical services statement of qualificationsgeological and geotechnical knowledge and experience...

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