REI Drilling provides directional drilling services for all types of mining dewatering and/or water transfer for active mining or environmental mitigation purposes.
Give us a call: 330-540-4506
Terry Schmidt, Skelly & Loy, “Big Run Restoration: A Success Story”Michael Hewitt, GISP
In the late 1990’s, a watershed assessment was completed for Blacklegs Creek and its Big Run tributary, which was the first step to development of a restoration plan. Design and construction activities were initiated around 2000. A four phase approach was developed to address the significant acidic pollution contributors in the watershed. Phase 1 consisted of treating “Big Run #2,” aka. the Sporanza discharge. The water was piped about ½ mile under Blacklegs Creek and treated using an open limestone based system. Phase 2 consisted of treating “Big Run #7” also using a limestone based system. Phase 3 was the biggest challenge due to the discharge location, water quality, water flow, and available space. To combat these challenges, a mine seal constructed in a drainage tunnel that effectively raised the water head approximately 30 feet to a location where some space was available. Partial treatment was accomplished using limestone which required frequent mixing to prevent clogging. Phase 4 was constructed to address “Big Run #3” (emanating from a location without property owner coordination) as well as providing for seasonal and supplemental treatment of Big Run #7 and #8. Through numerous grants of all types and 15 years or so of hard work, bugs and fish returned to lower Big Run and Blacklegs Creek below the confluence.
Bob Hedin, Hedin Environmental, “Two Passive Treatment Systems that are Regio...Michael Hewitt, GISP
Effective passive minewater treatment systems can be attractive to the public because they do not contain hazardous components, support wildlife, and communicate a resonating message of frugal ingenuity. This talk will focus on two passive treatment systems in Allegheny County that have become central components of popular public spaces: Allegheny Land Trust’s Wingfield Pines system and Pittsburgh Botanic Garden’s Woodlands system. The presentation will be supported with photos and statistics regarding the public use of both systems.
Incorporating the design features that were successful in the treatment capacity of the 1.2 acre wetland at the Flight 93 site for a typical flow = 775 gpm. The average percent removal was roughly 70% for iron and 50% for manganese within the wetland. This analysis allowed for a design foundation of the polishing aerobic wetland at the Clyde Mine Water Water Treatment Facility and the potential application at other mine water treatment locations where a relatively minor amount of polishing is needed to enhance iron and manganese removal for the final discharge.
This document discusses Griffin's expertise in dewatering and groundwater control since 1934. It provides information on Griffin's pumps and equipment, filtration and treatment systems, engineering capabilities, and approach to ash pond dewatering projects. Griffin offers customized solutions including modeling, design, installation of dewatering systems, pumps, filtration and operation/maintenance to lower water levels and allow for safe excavation of coal ash.
Culzean HPHT: Lessons Learnt From Maersk Oil UK's 1st HPHT Exploration Well &...HPHT Wells Summit
The document discusses lessons learned from the Culzean HPHT exploration well and issues related to appraisal planning. It summarizes the exploration well results, noting that while objectives were achieved there were challenges around pore pressure and fracture gradients. It recommends a "HPHT heavy" design for the appraisal well using a deeper set 13 5/8" intermediate casing to facilitate testing from multiple zones and enable setting the 9 7/8" production casing as deep as possible. The objectives of the appraisal well are to acquire sufficient key data to ascertain economic development and detailed development design.
Robert Hughes and Michael Hewitt, EPCAMR, “3D Modeling of Eastern Pennsylvani...Michael Hewitt, GISP
The complex geologic setting and historical mining of the anthracite mines creates a challenge to calculate the volume of water stored within the underground mines. EPCAMR’s recent mapping effort has reasonably found that almost 9 billion gallons of mine water resides in storage in 10 mines in the Southern Field and approximately 435 billion gallons in all the Northern Field. This associated report attempts to build on previous investigations to locate and quantify large volumes of water existing in underground mine voids, known as Mine Pools, in the Southern and Northern Anthracite Coal Fields of Eastern Pennsylvania. The goal of this project was to produce 3D Modeling of Eastern Pennsylvania Anthracite Mine Pools in Earthvision to Improve Water Quality Restoration and AMD Treatment via Consumptive Use Mitigation Projects in the Susquehanna River Basin. When pairing treatment with the ability to control the amount of water coming out of the mines, large flushes of stormwater that would normally escape untreated could be retained, later treated and released in times of low water or drought conditions.
Gary Merritt, Northern Star Generation LLC, “Big Yellow Taxi?…You don’t know...Michael Hewitt, GISP
The document discusses the process of remediating and reclaiming abandoned coal refuse sites through the use of coal refuse-fired electric generation units (EGUs). It describes how coal refuse is combusted with limestone in fluidized bed combustors, with the resulting ash used to neutralize and stabilize remaining materials on site. This process addresses water and air pollution issues by eliminating discharges and future fire risks. However, certain EPA regulations like the Cross-State Air Pollution Rule and Mercury and Air Toxics Standards present challenges for coal refuse-fired EGUs given the unique characteristics of bituminous coal refuse.
Went in to assist in fixing things and redesign numerous plantings and reconstruct hardscape a month before the grand opening. Worked with incredible DAMAC staff, Jamie Coyne, Matt Empsal and Leander Styne to complete my tasks.
Terry Schmidt, Skelly & Loy, “Big Run Restoration: A Success Story”Michael Hewitt, GISP
In the late 1990’s, a watershed assessment was completed for Blacklegs Creek and its Big Run tributary, which was the first step to development of a restoration plan. Design and construction activities were initiated around 2000. A four phase approach was developed to address the significant acidic pollution contributors in the watershed. Phase 1 consisted of treating “Big Run #2,” aka. the Sporanza discharge. The water was piped about ½ mile under Blacklegs Creek and treated using an open limestone based system. Phase 2 consisted of treating “Big Run #7” also using a limestone based system. Phase 3 was the biggest challenge due to the discharge location, water quality, water flow, and available space. To combat these challenges, a mine seal constructed in a drainage tunnel that effectively raised the water head approximately 30 feet to a location where some space was available. Partial treatment was accomplished using limestone which required frequent mixing to prevent clogging. Phase 4 was constructed to address “Big Run #3” (emanating from a location without property owner coordination) as well as providing for seasonal and supplemental treatment of Big Run #7 and #8. Through numerous grants of all types and 15 years or so of hard work, bugs and fish returned to lower Big Run and Blacklegs Creek below the confluence.
Bob Hedin, Hedin Environmental, “Two Passive Treatment Systems that are Regio...Michael Hewitt, GISP
Effective passive minewater treatment systems can be attractive to the public because they do not contain hazardous components, support wildlife, and communicate a resonating message of frugal ingenuity. This talk will focus on two passive treatment systems in Allegheny County that have become central components of popular public spaces: Allegheny Land Trust’s Wingfield Pines system and Pittsburgh Botanic Garden’s Woodlands system. The presentation will be supported with photos and statistics regarding the public use of both systems.
Incorporating the design features that were successful in the treatment capacity of the 1.2 acre wetland at the Flight 93 site for a typical flow = 775 gpm. The average percent removal was roughly 70% for iron and 50% for manganese within the wetland. This analysis allowed for a design foundation of the polishing aerobic wetland at the Clyde Mine Water Water Treatment Facility and the potential application at other mine water treatment locations where a relatively minor amount of polishing is needed to enhance iron and manganese removal for the final discharge.
This document discusses Griffin's expertise in dewatering and groundwater control since 1934. It provides information on Griffin's pumps and equipment, filtration and treatment systems, engineering capabilities, and approach to ash pond dewatering projects. Griffin offers customized solutions including modeling, design, installation of dewatering systems, pumps, filtration and operation/maintenance to lower water levels and allow for safe excavation of coal ash.
Culzean HPHT: Lessons Learnt From Maersk Oil UK's 1st HPHT Exploration Well &...HPHT Wells Summit
The document discusses lessons learned from the Culzean HPHT exploration well and issues related to appraisal planning. It summarizes the exploration well results, noting that while objectives were achieved there were challenges around pore pressure and fracture gradients. It recommends a "HPHT heavy" design for the appraisal well using a deeper set 13 5/8" intermediate casing to facilitate testing from multiple zones and enable setting the 9 7/8" production casing as deep as possible. The objectives of the appraisal well are to acquire sufficient key data to ascertain economic development and detailed development design.
Robert Hughes and Michael Hewitt, EPCAMR, “3D Modeling of Eastern Pennsylvani...Michael Hewitt, GISP
The complex geologic setting and historical mining of the anthracite mines creates a challenge to calculate the volume of water stored within the underground mines. EPCAMR’s recent mapping effort has reasonably found that almost 9 billion gallons of mine water resides in storage in 10 mines in the Southern Field and approximately 435 billion gallons in all the Northern Field. This associated report attempts to build on previous investigations to locate and quantify large volumes of water existing in underground mine voids, known as Mine Pools, in the Southern and Northern Anthracite Coal Fields of Eastern Pennsylvania. The goal of this project was to produce 3D Modeling of Eastern Pennsylvania Anthracite Mine Pools in Earthvision to Improve Water Quality Restoration and AMD Treatment via Consumptive Use Mitigation Projects in the Susquehanna River Basin. When pairing treatment with the ability to control the amount of water coming out of the mines, large flushes of stormwater that would normally escape untreated could be retained, later treated and released in times of low water or drought conditions.
Gary Merritt, Northern Star Generation LLC, “Big Yellow Taxi?…You don’t know...Michael Hewitt, GISP
The document discusses the process of remediating and reclaiming abandoned coal refuse sites through the use of coal refuse-fired electric generation units (EGUs). It describes how coal refuse is combusted with limestone in fluidized bed combustors, with the resulting ash used to neutralize and stabilize remaining materials on site. This process addresses water and air pollution issues by eliminating discharges and future fire risks. However, certain EPA regulations like the Cross-State Air Pollution Rule and Mercury and Air Toxics Standards present challenges for coal refuse-fired EGUs given the unique characteristics of bituminous coal refuse.
Went in to assist in fixing things and redesign numerous plantings and reconstruct hardscape a month before the grand opening. Worked with incredible DAMAC staff, Jamie Coyne, Matt Empsal and Leander Styne to complete my tasks.
The document summarizes the construction methods used for the East Duden Property portion of the Napa River Flood Protection Project. Key aspects included excavating 96,000 cubic yards of contaminated material from the marshplain and floodplain, installing 2,300 feet of turbidity curtain, constructing 1,450 feet of new levee and repairing 1,800 feet of existing levees. 20,000 tons of contaminated materials were removed to a Class II landfill. The marshplain was excavated to an elevation of 0.0 feet and the floodplain was terraced. 60,000 cubic yards of material was screened to remove debris and 25,000 cubic yards of concrete was crushed.
Controlling Water On Construction SitesMartin Preene
This document discusses controlling groundwater on construction sites. It provides examples of good and poor groundwater control. It also discusses managing surface water runoff and using techniques like cutoff walls, sump pumping, wellpoints and deepwells to control groundwater. The document notes potential environmental impacts of water management like settlement, pollution of aquifers or surface waters. With proper planning and design, the document concludes that projects can effectively manage surface and groundwater issues.
The document discusses lessons learned from Maersk Oil UK's first high-pressure, high-temperature (HPHT) exploration well at the Culzean prospect in the UK North Sea. It covers the Culzean prospect background, challenges of the exploration well design and planning given pressure and temperature conditions, results of the well, and planning for upcoming appraisal wells. Key topics included were the exploration well objectives to penetrate reservoirs and log them without coring or well testing, comparing more expensive "HPHT Heavy" versus less expensive "HPHT Light" well design options, and initial appraisal well planning challenges and objectives.
Environmental Impacts of Groundwater Control and DewateringMartin Preene
Dr. Martin Preene discusses potential environmental impacts from groundwater control systems like dewatering. He outlines two main groundwater control approaches: exclusion using physical cut-off walls, and pumping using well arrays. Potential impact categories include geotechnical impacts like settlement, contamination impacts, impacts to water-dependent features, impacts to water resources, and impacts from water discharges. Proper monitoring and mitigation measures tailored to each site are needed to avoid or reduce negative impacts.
Brad Shultz, Skelly and Loy, "Broad Top Township Six Mile Run AMD Treatment a...Michael Hewitt, GISP
For more than 30 years, Broad Top Township has worked to improve the quality of life for its citizens by addressing the negative environmental impacts related to Abandoned Mine Lands (AMLs) and Abandoned Mine Drainage (AMD). Results in Six Mile Run are impressive.
Lake Restoration Projects Being Undertaken by BDA_Bangalore Development Autho...Ekonnect
The document discusses lake restoration projects being undertaken by the Bangalore Development Authority (BDA). It provides background on BDA's aims, jurisdiction, and environmental conservation initiatives including lake restoration. It then summarizes the current state of Bangalore's lakes, which are largely encroached, polluted, and in need of restoration. The methodology for BDA's lake restoration projects is described, including removing encroachments, desilting, constructing wetlands and sewage diversion channels. Status updates and challenges to progress are also summarized, such as pending encroachment clearances and need for improved sewage networks and rehabilitation efforts.
Impacts from groundwater comtrol in urban areasMartin Preene
This document discusses groundwater control techniques used for civil engineering projects involving excavation below the groundwater level. It focuses on the particular challenges and potential environmental impacts of groundwater control in urban areas. Two main methods of groundwater control are described: pumping methods which lower groundwater levels using wells/sumps, and exclusion methods using cut-off walls. Key impacts are categorized as geotechnical, contamination, effects on water features/resources, and water discharges. The document stresses the importance of baseline monitoring, operational monitoring of pumping rates/water levels, and mitigation measures like artificial recharge and targeted cut-off walls to minimize environmental impacts.
Greenstreet CW - Cooper Basin Unconventional Resources APPEA 2015Carl Greenstreet
1) Santos has been exploring and appraising unconventional gas resources in the Cooper Basin of Australia for over 20 years, with increasing success.
2) There are four main unconventional targets in the Permian sequence - tight sands, shale, deep coal, and hybrid shale - each with proven gas content and flow.
3) Santos' approach involves long-term appraisal of multiple regions and targets through exploration, appraisal, and development/appraisal phases to prove up the commercial potential at scale.
Construction dewatering techniques are used to control groundwater during excavation projects below the water table. Proper dewatering allows excavations to be constructed in dry, stable conditions and provides benefits like improved safety and construction efficiency. There are two main types of dewatering methods - exclusion techniques using cut-off walls to block water, and pumping techniques like deep wells or wellpoints to lower the water level. The appropriate technique depends on the excavation type and soil permeability.
American Society of Civil Engineering Orange County Branch (ASCE OC) - Environmental And Water Resources Institute (EWRI) - February Luncheon Presentation: Mid-Basin Injection at Centennial Park Project. Ground Water Replenishment System (GWRS) Presentation by OCWD and Tetra Tech
This document discusses mine dewatering and groundwater control. It describes various approaches to dewatering such as exclusion methods using cut-off walls or grouting, and pumping methods using wells, drains or sumps. Both open pit and underground mines are addressed. The key aspects of successful mine dewatering projects are explained as understanding the hydrogeology, appropriate dewatering technology, and environmental considerations.
Amy Wolfe, Trout Unlimited, "15 Years of Assessment, Abatement, and Recovery ...Michael Hewitt, GISP
Since the inception of the partnership between TU and KCWA in 1998 through TU’s national Kettle Creek Home Rivers Initiative, numerous assessments (including hydrogeological studies and airborne remote sensing surveys) were conducted, and nine passive treatment systems, a land reclamation project, and a mine pool stabilization project have been completed.
The document summarizes the Casselberry, Florida pipe bursting project that replaced 35 miles of asbestos cement (AC) water pipes. Some key points:
- The project received over $10 million in funding to replace the aging AC pipe network in a more sustainable way than open-cut replacement.
- Pipe bursting was used to install new HDPE pipes with minimal disruption to residents. It allowed replacing large sections of pipe per day with almost no excavation.
- Air monitoring during the project found asbestos fiber levels below OSHA limits, indicating little risk from the pipe bursting process. However, EPA views it as subject to asbestos regulations.
- The project provided a case study for research on
Man Made River Project - IV Phase / Ghadames Project - PipelayingVladimir Popovic
This document summarizes a project to transport water from the Nubian Sandstone Aquifer near Ghadames, Libya to the coastal city of Zuwarah using a 423km pre-stressed concrete cylinder pipeline (PCCP). The PCCP pipes were produced in Libya and installed along the pipeline route. Challenges during installation included high desert temperatures, subsurface cavities, and pipe buoyancy during rare winter floods. Some pipes also developed hollow sounds due to coating delamination, which was repaired using a gunite method.
SPE Workshop Water Quality and Hz Inj - MB Dupont P.Eng.Mike Dupont
1) Water quality is crucial for successful waterflooding operations as poor quality water can lead to formation plugging and reduced injectivity. Setting strict water quality specifications, such as less than 5 ppm total suspended solids, can help prevent premature injectivity decline.
2) Examples from the Waskada field show that vertical waterflooding can significantly increase oil recovery when water quality is controlled, but projects are often abandoned due to injectivity issues from poor quality makeup water.
3) Horizontal multi-stage fractured (HMSF) wells may require a different waterflooding approach compared to conventional vertical wells due to differences in well orientation, reservoir depletion timing, and potential for faster fracture extension. Maintaining high
The resume summarizes the civil engineering and environmental engineering experience of Marvin Williams over more than 40 years. It includes experience in areas such as project design, permitting, construction inspection, hazardous waste permitting and regulatory compliance for public works projects, private developments, and environmental cleanups. Williams has extensive experience in areas such as water/sewer systems, stormwater management, landfill design, and hazardous waste site remediation. He is a registered professional engineer in Missouri, Arkansas, and Texas.
Master Plan Project Report on Remodeling of Storm Water Drains_BBMP Ekonnect
This document provides a summary of the Master Plan Project Report for remodeling storm water drains in the Bruhath Bengaluru Mahanagara Palike (BBMP) area of Bengaluru, India. Some key details include:
- The BBMP area covers 710 square kilometers divided into core and peripheral areas. There are over 840 kilometers of storm water drains.
- The master plan project aims to minimize flooding, ensure free flow of storm water, improve environmental conditions, and protect water bodies.
- Proposals include improving drain capacity, developing water bodies as holding ponds, upgrading culverts and bridges, and carrying out other infrastructure works.
- The estimated total cost is 4,
This document provides a case study of the Middle Fork slurry impoundment operated by Clinchfield Coal Company since 1972. It describes several unique engineering challenges that arose during operation, including abandoning the transition between the 60-inch and 24-inch underflow pipes by drilling a vertical shaft and grouting, installing a new 48-inch principal spillway by directional drilling, and extending the life of the fines recovery operation by reclaiming an adjacent abandoned impoundment. The case study details how these challenges were addressed to safely and environmentally soundly operate the impoundment and fine coal recovery facilities over several decades.
The EPA and environmental contractors responded to an accidental release of acidic, metal-laden water from the Gold King Mine into the Colorado River. Rain for Rent provided pumps, pipe, and other equipment to capture and treat the contaminated water in two phases. The first phase involved pumping water into settling ponds, raising the pH, and removing solids. The second phase bypassed water to weir ponds where settling and pH adjustment occurred before returning the water downstream. Rain for Rent's high head pumps overcame elevation changes to move water between sites for initial treatment and mitigation of further contamination.
Roger Howell is a principal hydrogeologist with over 30 years of experience in mining hydrogeology. He has worked on numerous projects involving hydrogeologic characterization, mine dewatering projections, and evaluating environmental impacts of mining. Some of the key projects mentioned in the document include studies for mines in the Philippines, Nevada, Argentina, Mexico, Alaska, Columbia, Saskatchewan, Nevada, Montana, Ontario, Utah, Northwest Territories, Peru, and Wyoming. The document provides an overview of Roger Howell's technical contributions and general approach to hydrogeologic studies for mining projects.
The document summarizes the construction methods used for the East Duden Property portion of the Napa River Flood Protection Project. Key aspects included excavating 96,000 cubic yards of contaminated material from the marshplain and floodplain, installing 2,300 feet of turbidity curtain, constructing 1,450 feet of new levee and repairing 1,800 feet of existing levees. 20,000 tons of contaminated materials were removed to a Class II landfill. The marshplain was excavated to an elevation of 0.0 feet and the floodplain was terraced. 60,000 cubic yards of material was screened to remove debris and 25,000 cubic yards of concrete was crushed.
Controlling Water On Construction SitesMartin Preene
This document discusses controlling groundwater on construction sites. It provides examples of good and poor groundwater control. It also discusses managing surface water runoff and using techniques like cutoff walls, sump pumping, wellpoints and deepwells to control groundwater. The document notes potential environmental impacts of water management like settlement, pollution of aquifers or surface waters. With proper planning and design, the document concludes that projects can effectively manage surface and groundwater issues.
The document discusses lessons learned from Maersk Oil UK's first high-pressure, high-temperature (HPHT) exploration well at the Culzean prospect in the UK North Sea. It covers the Culzean prospect background, challenges of the exploration well design and planning given pressure and temperature conditions, results of the well, and planning for upcoming appraisal wells. Key topics included were the exploration well objectives to penetrate reservoirs and log them without coring or well testing, comparing more expensive "HPHT Heavy" versus less expensive "HPHT Light" well design options, and initial appraisal well planning challenges and objectives.
Environmental Impacts of Groundwater Control and DewateringMartin Preene
Dr. Martin Preene discusses potential environmental impacts from groundwater control systems like dewatering. He outlines two main groundwater control approaches: exclusion using physical cut-off walls, and pumping using well arrays. Potential impact categories include geotechnical impacts like settlement, contamination impacts, impacts to water-dependent features, impacts to water resources, and impacts from water discharges. Proper monitoring and mitigation measures tailored to each site are needed to avoid or reduce negative impacts.
Brad Shultz, Skelly and Loy, "Broad Top Township Six Mile Run AMD Treatment a...Michael Hewitt, GISP
For more than 30 years, Broad Top Township has worked to improve the quality of life for its citizens by addressing the negative environmental impacts related to Abandoned Mine Lands (AMLs) and Abandoned Mine Drainage (AMD). Results in Six Mile Run are impressive.
Lake Restoration Projects Being Undertaken by BDA_Bangalore Development Autho...Ekonnect
The document discusses lake restoration projects being undertaken by the Bangalore Development Authority (BDA). It provides background on BDA's aims, jurisdiction, and environmental conservation initiatives including lake restoration. It then summarizes the current state of Bangalore's lakes, which are largely encroached, polluted, and in need of restoration. The methodology for BDA's lake restoration projects is described, including removing encroachments, desilting, constructing wetlands and sewage diversion channels. Status updates and challenges to progress are also summarized, such as pending encroachment clearances and need for improved sewage networks and rehabilitation efforts.
Impacts from groundwater comtrol in urban areasMartin Preene
This document discusses groundwater control techniques used for civil engineering projects involving excavation below the groundwater level. It focuses on the particular challenges and potential environmental impacts of groundwater control in urban areas. Two main methods of groundwater control are described: pumping methods which lower groundwater levels using wells/sumps, and exclusion methods using cut-off walls. Key impacts are categorized as geotechnical, contamination, effects on water features/resources, and water discharges. The document stresses the importance of baseline monitoring, operational monitoring of pumping rates/water levels, and mitigation measures like artificial recharge and targeted cut-off walls to minimize environmental impacts.
Greenstreet CW - Cooper Basin Unconventional Resources APPEA 2015Carl Greenstreet
1) Santos has been exploring and appraising unconventional gas resources in the Cooper Basin of Australia for over 20 years, with increasing success.
2) There are four main unconventional targets in the Permian sequence - tight sands, shale, deep coal, and hybrid shale - each with proven gas content and flow.
3) Santos' approach involves long-term appraisal of multiple regions and targets through exploration, appraisal, and development/appraisal phases to prove up the commercial potential at scale.
Construction dewatering techniques are used to control groundwater during excavation projects below the water table. Proper dewatering allows excavations to be constructed in dry, stable conditions and provides benefits like improved safety and construction efficiency. There are two main types of dewatering methods - exclusion techniques using cut-off walls to block water, and pumping techniques like deep wells or wellpoints to lower the water level. The appropriate technique depends on the excavation type and soil permeability.
American Society of Civil Engineering Orange County Branch (ASCE OC) - Environmental And Water Resources Institute (EWRI) - February Luncheon Presentation: Mid-Basin Injection at Centennial Park Project. Ground Water Replenishment System (GWRS) Presentation by OCWD and Tetra Tech
This document discusses mine dewatering and groundwater control. It describes various approaches to dewatering such as exclusion methods using cut-off walls or grouting, and pumping methods using wells, drains or sumps. Both open pit and underground mines are addressed. The key aspects of successful mine dewatering projects are explained as understanding the hydrogeology, appropriate dewatering technology, and environmental considerations.
Amy Wolfe, Trout Unlimited, "15 Years of Assessment, Abatement, and Recovery ...Michael Hewitt, GISP
Since the inception of the partnership between TU and KCWA in 1998 through TU’s national Kettle Creek Home Rivers Initiative, numerous assessments (including hydrogeological studies and airborne remote sensing surveys) were conducted, and nine passive treatment systems, a land reclamation project, and a mine pool stabilization project have been completed.
The document summarizes the Casselberry, Florida pipe bursting project that replaced 35 miles of asbestos cement (AC) water pipes. Some key points:
- The project received over $10 million in funding to replace the aging AC pipe network in a more sustainable way than open-cut replacement.
- Pipe bursting was used to install new HDPE pipes with minimal disruption to residents. It allowed replacing large sections of pipe per day with almost no excavation.
- Air monitoring during the project found asbestos fiber levels below OSHA limits, indicating little risk from the pipe bursting process. However, EPA views it as subject to asbestos regulations.
- The project provided a case study for research on
Man Made River Project - IV Phase / Ghadames Project - PipelayingVladimir Popovic
This document summarizes a project to transport water from the Nubian Sandstone Aquifer near Ghadames, Libya to the coastal city of Zuwarah using a 423km pre-stressed concrete cylinder pipeline (PCCP). The PCCP pipes were produced in Libya and installed along the pipeline route. Challenges during installation included high desert temperatures, subsurface cavities, and pipe buoyancy during rare winter floods. Some pipes also developed hollow sounds due to coating delamination, which was repaired using a gunite method.
SPE Workshop Water Quality and Hz Inj - MB Dupont P.Eng.Mike Dupont
1) Water quality is crucial for successful waterflooding operations as poor quality water can lead to formation plugging and reduced injectivity. Setting strict water quality specifications, such as less than 5 ppm total suspended solids, can help prevent premature injectivity decline.
2) Examples from the Waskada field show that vertical waterflooding can significantly increase oil recovery when water quality is controlled, but projects are often abandoned due to injectivity issues from poor quality makeup water.
3) Horizontal multi-stage fractured (HMSF) wells may require a different waterflooding approach compared to conventional vertical wells due to differences in well orientation, reservoir depletion timing, and potential for faster fracture extension. Maintaining high
The resume summarizes the civil engineering and environmental engineering experience of Marvin Williams over more than 40 years. It includes experience in areas such as project design, permitting, construction inspection, hazardous waste permitting and regulatory compliance for public works projects, private developments, and environmental cleanups. Williams has extensive experience in areas such as water/sewer systems, stormwater management, landfill design, and hazardous waste site remediation. He is a registered professional engineer in Missouri, Arkansas, and Texas.
Master Plan Project Report on Remodeling of Storm Water Drains_BBMP Ekonnect
This document provides a summary of the Master Plan Project Report for remodeling storm water drains in the Bruhath Bengaluru Mahanagara Palike (BBMP) area of Bengaluru, India. Some key details include:
- The BBMP area covers 710 square kilometers divided into core and peripheral areas. There are over 840 kilometers of storm water drains.
- The master plan project aims to minimize flooding, ensure free flow of storm water, improve environmental conditions, and protect water bodies.
- Proposals include improving drain capacity, developing water bodies as holding ponds, upgrading culverts and bridges, and carrying out other infrastructure works.
- The estimated total cost is 4,
This document provides a case study of the Middle Fork slurry impoundment operated by Clinchfield Coal Company since 1972. It describes several unique engineering challenges that arose during operation, including abandoning the transition between the 60-inch and 24-inch underflow pipes by drilling a vertical shaft and grouting, installing a new 48-inch principal spillway by directional drilling, and extending the life of the fines recovery operation by reclaiming an adjacent abandoned impoundment. The case study details how these challenges were addressed to safely and environmentally soundly operate the impoundment and fine coal recovery facilities over several decades.
The EPA and environmental contractors responded to an accidental release of acidic, metal-laden water from the Gold King Mine into the Colorado River. Rain for Rent provided pumps, pipe, and other equipment to capture and treat the contaminated water in two phases. The first phase involved pumping water into settling ponds, raising the pH, and removing solids. The second phase bypassed water to weir ponds where settling and pH adjustment occurred before returning the water downstream. Rain for Rent's high head pumps overcame elevation changes to move water between sites for initial treatment and mitigation of further contamination.
Roger Howell is a principal hydrogeologist with over 30 years of experience in mining hydrogeology. He has worked on numerous projects involving hydrogeologic characterization, mine dewatering projections, and evaluating environmental impacts of mining. Some of the key projects mentioned in the document include studies for mines in the Philippines, Nevada, Argentina, Mexico, Alaska, Columbia, Saskatchewan, Nevada, Montana, Ontario, Utah, Northwest Territories, Peru, and Wyoming. The document provides an overview of Roger Howell's technical contributions and general approach to hydrogeologic studies for mining projects.
Wac ncc091511 ascent,unconventional oil,northamericaDavid Edick Jr
The document discusses the rise of unconventional oil production in North America from oil sands and tight oil plays. It provides an overview of Canadian oil sands reserves and production forecasts, describing the primary production and upgrading processes. It also summarizes the Bakken tight oil formation in North Dakota, including its geology and significant production growth. The document notes debates around environmental impacts and challenges of regulatory oversight for oil sands and the potential for other North American shale trends.
The document summarizes LCRA's plans to expand water supplies in central Texas to meet growing demands through 2070. It discusses developing groundwater resources, building the Lane City Reservoir downstream on the Colorado River, and other projects. The 40,000 acre-foot Lane City Reservoir would capture additional runoff and increase system efficiency, with an annual firm yield of 90,000 acre-feet. It requires various permits and has engineering controls like cutoff walls. LCRA is also building the smaller Prairie Conservation Reservoir to enhance irrigation operations in the Lakeside Division.
The document describes a storm drain project in Rancho Palos Verdes, California that involved constructing two tunnels and stabilizing a landslide area. A 300-foot long slant drain tunnel was jacked under a bluff using a rotohead boring machine. A longer 2,200-foot tunnel was constructed using rib and lagging shoring. The project addressed flooding and erosion issues and cost a total of $17.7 million, coming in slightly under budget despite some change orders. It received awards for its innovation and as a disaster/emergency repair project.
This document discusses challenges and solutions related to deep water drilling. It describes different types of rigs used for deep water drilling at various water depths. Key challenges discussed include gas hydrates, reactive formations, low fracture gradients, large mud volumes, low flow line temperatures, and high rig costs. Solutions provided relate to additive selection, temperature and pressure management, casing design, logistics planning, and optimization to reduce costs and time.
Royal Lake Dredging and Restoration Project: Pardon Our Dust Meeting May 9, 2016Fairfax County
The document discusses plans for dredging and restoring Royal Lake in Fairfax County, VA, which will involve removing 51,220 cubic yards of sediment, stabilizing shorelines and streams, installing fish habitats, and improving safety, with construction to take place from June 2016 to June 2017 while keeping the lake mostly drained.
The document discusses using the Prioritize Target Measure Application (PTMApp) tool to target conservation practices in the international Roseau River watershed located on the border of Manitoba and Minnesota. PTMApp uses high resolution spatial data to delineate catchments and prioritize best management practices (BMPs) to reduce phosphorus loading, sediment loading, and improve water quality issues affecting Lake Winnipeg and downstream water bodies. Key outputs of PTMApp include nutrient and sediment yield calculations, BMP suitability maps, and targeting of practices. Next steps involve evaluating BMP processes for the region's cold climate, conducting cost-benefit analysis, and expanding the tool to additional watersheds to facilitate international collaboration on conservation planning.
The document provides information about the Bass River watershed on Cape Cod, Massachusetts. It summarizes that the watershed covers 10,331 acres across 11,800 parcels in Dennis, Yarmouth, and other towns. Developed land in those towns increased 58.7% and 56.3% from 1971 to 1999. The watershed includes features like Long Pond and is impacted by nitrogen pollution from septic systems, fertilizers, and other sources. Studies show some surface waters and subwatersheds exceed nitrogen limits, threatening ecosystem health. Solutions discussed include the Cape Cod Regional Wastewater Management Plan and a mix of decentralized and centralized wastewater infrastructure projects over 20-30 years.
The document discusses regulations in Texas around unconventional oil and gas development. It provides an overview of oil and gas production statistics in Texas, as well as issues related to development like water usage, air emissions, and waste management. It outlines the jurisdiction of the Railroad Commission of Texas regarding permitting and regulations for well drilling, completions including hydraulic fracturing, pipelines, and waste disposal. The presentation discusses recent rule changes around chemical disclosure, casing and cementing requirements, and rules regarding disposal and recycling of hydraulic fracturing wastewater.
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REI Drilling, Inc. - Water Transfer Boreholes for Mining Applications
1. ADVANCED HORIZONTAL WATER DRAINAGE BOREHOLES
FOR MINE REMEDIATION APPLICATIONS AND ACTIVE
MINING OPERATIONS
• Slide TextDIRECTIONAL SOLUTIONS
Michael P. Bohan
Licensed Professional Geologist / Technical Sales Manager
2. BACKGROUND
• Slide TextDIRECTIONAL SOLUTIONS
• 35 years as a service provider to the
mining industry, developing directional
drilling for projects including:
degasification, exploration, dewatering,
water transfer, abandoned mine
verification, and shallow depleted oil
development (oil mining).
• 17 years providing dewatering / water
transfer services to the mining industry,
state / local government, & private
entities. Approximately 30% of drilling
revenues is derived from this category
(dewatering / water transfer).
3. HORIZONTAL DEWATERING / WATER TRANSFER BOREHOLES
• Slide TextDIRECTIONAL SOLUTIONS
• PADEP – Kalp / Melcroft
Acid mine drainage and mine pool
control.
• Rio Tinto – Bingham Canyon
Stope dewatering / pore pressure
reduction.
• PacificCorp – Deer Creek
Underground water transfer.
• US EPA – Abandoned Argintine Mine
Mine pool draw-down.
• Iron Range
Potential environmental & mining applications.
IRON RANGE
KELP / MELCROFT
BINGHAM CANYON
DEER CREEK
ARGENTINE MINE
Projects
4. HORIZONTAL DEWATERING / WATER TRANSFER BOREHOLES
• Slide TextDIRECTIONAL SOLUTIONS
Advantages over Conventional Vertical Well Installations:
• Provide gravity drainage
systems.
• Eliminate pumping.
• Zero power costs.
• Minimal Maintenance.
5. KALP / MELCROFT
ACID MINE DRAINAGE / MINE POOL CONTROL
• Slide TextDIRECTIONAL SOLUTIONS
PADEP - Somerset County, Pennsylvania
Drill Station
Mine Pool
6. KALP / MELCROFT
ACID MINE DRAINAGE / MINE POOL CONTROL
• Slide TextDIRECTIONAL SOLUTIONS
PADEP - Somerset County, Pennsylvania
• 2x 450ft x 12 inch diameter gravity fed drainage
boreholes to control mine pool.
• Elimination of weeping / seepage along outcrop.
• Elimination of catastrophic failure (blowout potential).
7. KALP / MELCROFT
ACID MINE DRAINAGE / MINE POOL CONTROL
• Slide TextDIRECTIONAL SOLUTIONS
PADEP - Somerset County, Pennsylvania
• Very tight working confines.
• All drilling effluent and cuttings
had to be contained and disposed of.
• Discharge water was recirculated back into
the mine pool while drilling & reaming.
8. KALP / MELCROFT
ACID MINE DRAINAGE / MINE POOL CONTROL
• Slide TextDIRECTIONAL SOLUTIONS
PADEP - Somerset County, Pennsylvania
• Drill station developed from a sump.
• 4 Inch pilot hole developed short of the
break-out point.
• Stage reamed up to 16 Inches.
9. KALP / MELCROFT
ACID MINE DRAINAGE / MINE POOL CONTROL
• Slide TextDIRECTIONAL SOLUTIONS
PADEP - Somerset County, Pennsylvania
• 12 Inch stainless steel casing and hardware
installed due to low pH.
• Wellhead & grout job engineered and
pressure tested to 1.5x maximum
head pressure.
• Casing re-entered and break-out into
inundated old workings.
10. DEER CREEK UNDERGROUND WATER TRANSFER BOREHOLE
• Slide TextDIRECTIONAL SOLUTIONS
PacificCorp - Huntington, Utah
• 1x 10 Inch, HDPE lined water transfer borehole.
• 4,860 ft length.
• Connected two longwall coal mining districts.
Drill Station
11. DEER CREEK MINE WATER TRANSFER
• Slide TextDIRECTIONAL SOLUTIONS
PacificCorp - Huntington, Utah
• Provided drainage for treatment of mine discharge
at one central location
• Alternative would have been to pump perpetually
from one of the sites.
12. KENNECOTT UTAH COPPER BINGHAM CANYON MINE
STOPE DRAINAGE BOREHOLE
• Slide TextDIRECTIONAL SOLUTIONS
Rio Tinto – Salt Lake County, Utah
Drill Station
13. KENNECOTT UTAH COPPER BINGHAM CANYON MINE
STOPE DRAINAGE BOREHOLE
• Slide TextDIRECTIONAL SOLUTIONS
Rio Tinto – Salt Lake County, Utah
Drill Station
• Elimination of water behind pit walls
• Allows for steepening the angle of pit wall / bench
development for efficiencies / economics.
14. KENNECOTT UTAH COPPER BINGHAM CANYON MINE
STOPE DRAINAGE BOREHOLE
• Slide TextDIRECTIONAL SOLUTIONS
Rio Tinto – Salt Lake County, Utah
• 1x 6 Inch, stainless steel lined dewatering borehole.
• 2,800 ft length.
15. ARGENTINE MINE POOL DRAW-DOWN
• Slide TextDIRECTIONAL SOLUTIONS
Drill Station
US EPA – Rico, Colorado
• Project parameters identical to Gold
King.
• Drawdown mine pool to reduce head
pressure on mine seals.
16. ARGENTINE MINE POOL DRAW-DOWN
• Slide TextDIRECTIONAL SOLUTIONS
Gold King Mine Spill – Silverton, Colorado
• 2015
• 3 million gallons of acid mine water.
• TDS contained heavy metals.
• Horizontal Drilling rather than excavation
would likely have prevented the
Gold King mine spill.
17. ARGENTINE MINE POOL DRAW-DOWN
• Slide TextDIRECTIONAL SOLUTIONS
US EPA – Rico, Colorado
• 2x 8 inch horizontal acid mine water
drainage wells.
• Borehole No.1 - 220 ft length.
• Borehole No.2 - 270 ft in length.
Drill Station
Drill Station
18. ARGENTINE MINE POOL DRAW-DOWN
• Slide TextDIRECTIONAL SOLUTIONS
US EPA – Rico, Colorado
• Initial development of 100 ft through
unconsolidated broken ground.
• Utilized a casing advancer.
19. IRON RANGE MINES
• Slide TextDIRECTIONAL SOLUTIONS
Environmental Applications
• Abandoned, inundated mines.
Active Mining
• Applications for Pit dewatering.
20. IRON RANGE MINES
• Slide TextDIRECTIONAL SOLUTIONS
Environmental Applications
Abandoned Inundated Mines
• Need enough outfall
(elevation) to allow
for draw-down.
• Borehole diameter needs
to be large enough to handle
flow volumes.
21. IRON RANGE MINES
• Slide TextDIRECTIONAL SOLUTIONS
Active Mining
• Mining may be below drainage,
I.E. Gravity drainage may not
be effective.
• Vertical well intercept.
Drill Station
Vertical Well Intercept
22. IRON RANGE MINES
• Slide TextDIRECTIONAL SOLUTIONS
Active Mining
• Mining may be below drainage
(I.E. Gravity drainage may not
be effective).
• Vertical well intercept.
Drill Station
Vertical Well Intercept