N 5 L T w Underground Workings Investigation Plan Technical Memorandum #5 Ely Copper Mine Superfund Site Operable Units 2 and 3 Vershire, Vermont Remedial Investigation / Feasibility Study EPA Task Order No. 0070-RI-CO-017L REMEDIAL ACTION CONTRACT No. EP-S1-06-03 FOR US Environmental Protection Agency Region 1 BY Nobis Engineering, Inc. Nobis Project No. 80070 July 11, 2014 Nobis Engineering, Inc. Lowell, Massachusetts Concord, New Hampshire Phone (800) 394-4182 www.nobisengineering.com U.S. Environmental Protection Agency Region 1 5 Post Office Square, Suite 100 Boston, Massachusetts 02109-3919 NH-3964-2014-D Nobis Engineering, Inc.
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Nobis Engineering, Inc.
585 Middlesex Street
Lowell, MA 01851
T (978) 683-0891
www.nobiseng.com
Underground Workings Investigation Plan Technical Memorandum #5 Ely Copper Mine Superfund Site Operable Units 2 and 3
Vershire, Vermont Remedial Investigation / Feasibility Study EPA Task Order No. 0070-RI-CO-017L
REMEDIAL ACTION CONTRACT No. EP-S1-06-03 FOR
US Environmental Protection Agency Region 1 BY
Nobis Engineering, Inc. Nobis Project No. 80070
July 11, 2014
Nobis Engineering, Inc.
Lowell, Massachusetts
Concord, New Hampshire
Phone (800) 394-4182
www.nobisengineering.com
U.S. Environmental Protection Agency
Region 1
5 Post Office Square, Suite 100
Boston, Massachusetts 02109-3919
NH-3964-2014-D Nobis Engineering, Inc.
Nobis Engineering, Inc.
585 Middlesex Street
Lowell, MA 01851
T (978) 683-0891
www.nobiseng.com
Underground Workings Investigation Plan
Ely Copper Mine Superfund Site Operable Units 2 and 3 Vershire, Vermont Remedial Investigation / Feasibility Study EPA Task Order No. 0070-RI-CO-017L
REMEDIAL ACTION CONTRACT No. EP-S1-06-03 For US Environmental Protection Agency Region 1 By Nobis Engineering, Inc. Nobis Project No. 80070 July 2014
Elev. = elevation in feet above mean sea level (MSL)
approximate total depth reachable by instruments is 211 ft bgs.
Boring ID
Top of Casing Top of Void Screened IntervalBottom of casing
Open at 380
Open at 225
End of Borehole
Well Type Well IDWell
Depth (ft)
*Top of void estimate based on drilling (casing installed through void prior to borehole geophisics). Bottom of boring collapsed/obscured by rubble;
NH-3964-2014-D Nobis Engineering, Inc.
Table 3-3
Groundwater Sampling Locations
Ely Copper Mine Superfund Site OU2/OU3
Vershire, Vermont
Page 1 of 1
MW-01C Shallow Bedrock Smelter/Slag X X X No exceedances of PRGs, near by to MW-02 couplet
MW-02A Shallow Overburden Smelter/Slag X X X Assess impacted groundwater in the slag area
MW-02B Deep Overburden Smelter/Slag X X X Assess impacted groundwater in the slag area
MW-02C Shallow Bedrock Smelter/Slag X X X Assess impacted groundwater in the slag area
MW-05A Shallow Overburden UWA X X X Assess groundwater impacts to tramway/UWA erosion area
MW-05B Deep Overburden UWA X X X Assess groundwater impacts to tramway/UWA erosion area
MW-05C Shallow Bedrock UWA X X X Assess groundwater impacts to tramway/UWA erosion area
MW-08A Shallow Overburden UWA X X X Assess impacted groundwater in Pond 4 & 5 area
MW-09A Shallow Overburden UWA X X X Assess the impacts from UWA on non-waste areas
MW-09C Shallow Bedrock UWA X X X Assess the impacts from UWA on non-waste areas
MW-11A Shallow Overburden Smelter/Slag X X X Assess groundwater impact in the smelter area
MW-11C Shallow Bedrock Smelter/Slag X X X Assess groundwater impact in the smelter area
MW-12C Shallow Bedrock UWA X X X Assess impacted groundwater in Pond 4 & 5 area
MW-13A Shallow Overburden UWA X X X Provide data near access road/UWA buffer zone
MW-14A Shallow Overburden EB-LR X X X Assess groundwater impacts outside of the boundary of EB-LR floodplain
MW-14C Shallow Bedrock EB-LR X X X Assess groundwater impacts outside of the boundary of EB-LR floodplain
MW-14D Deep Bedrock EB-LR X X X Assess groundwater impacts outside of the boundary of EB-LR floodplain
MW-15A Shallow Overburden EB-TZ X X X Assess groundwater impacts west of EB-MR
MW-18A Shallow Overburden UWA X X X Historically dry location; however, if water is present a sample should be collected due to lack of data points for the location
MW-19A Shallow Overburden UWA X X X Only location with consistent data in the UWA
MW-19C Shallow Bedrock UWA X X X Only location with consistent data in the UWA
MW-19D Deep Bedrock UWA Well is damaged with an obstruction at about 30 feet bgs. In the event the can be repaired, sampling will be re-evaluated.
MW-20A Shallow Overburden LWA X X X Assess the impacts of the LWA on non-waste area
MW-20C Shallow Bedrock LWA X X X Assess the impacts of the LWA on non-waste area
MW-20D Deep Bedrock LWA X X X Assess the impacts of the LWA on non-waste area
MW-21A Shallow Overburden LWA X X X Represents the core of the LWA
MW-21C Shallow Bedrock LWA X X X Represents the core of the LWA
MW-22A Shallow Overburden Tailing X X X Only location within the TA
MW-DP1 Deep Bedrock BMW X X X Target of investigation to determine potential impacts from mine pool
MW-UP1 Deep Bedrock BMW X X X Target of investigation to determine potential impacts from mine pool
MW-UP2 Deep Bedrock BMW X X X Target of investigation to determine potential impacts from mine pool
Underground Workings Sampling and Monitoring Equipment
Ely Copper Mine Superfund Site OU2/OU2
Vershire, Vermont
Groundwater Sampling
Item Required for Well Manufacturer Model Performance Specification Power Requirements Comments
Pumps, Controls, and Power
Nominal 3-Inch Submersible Pump MW-UP2, MW-DP1 10SQ330230 V; rated at 3-15 gpm; 1.5HP; pump curve suggests 10 - 12 gpm at water depth of 280 ft;
flow will decrease as water level drops -- may be 6 gpm or less at 380 ftGenerator For cables, assume sample depth 300 ft for DP1,plus 10 ft = 310 ft;
Nominal 2-Inch Submersible Pump MW-UP1 pump curve output = 8 gpm at 75 ft head;220 V; 0.5HP; 400Hz; For cable, assume sample depth 70 ft plus 10 ft = 80 ft;
2" Submersible Pump Control Box MW-UP1 100 ml/min to 9 gpm; pump has interconnect cable for voltage conversion
Generator MW-UP1, MW-UP2, MW-DP1 Generac GP5500 5000 W; has 200-240V output and 100-115V output Gasoline
MW-UP1 83 ft; 3/8 inch clear polyethylene For tubing, assume sample depth 73 ft, plus 10 ft;
MW-UP2 215 ft; 1 inch black polythylene For tubing, assume sample depth 205 ft, plus 10 ft;
MW-DP1 310 ft; 1 inch black polythylene For tubing, assume sample depth 300 ft, plus 10 ft;
Other fitings and/or adaptors MW-UP1, MW-UP2, MW-DP1 plastic "transducer savers" on rim of well N/A
Monitoring and Sampling Field Measurement Meters
Water level meter MW-UP1, MW-UP2, MW-DP1 Solinst 101 - 300' 300'; also may need extra weight to get probe down the deviated borehole in DP1 Battery
Pressure Transducer and Barometric Data Reader MW-UP1, MW-UP2, MW-DP1 In Situ Rugged Reader 520 MHz with comm cable; Optional -- can use laptop Battery
Laptop Computer MW-UP1, MW-UP2, MW-DP1 Not required if using Rugged Reader; also need comm cable Battery
Multi-parameter water quality meter YSI 600XL MPS w/ Flow Cell
Turbidity meter Hach 2100P
Peristaltic pump with battery/charge GeoPump Battery pack
Filter MW-UP1, MW-UP2, MW-DP1 .45 micron N/A
Monthly Water Level Monitoring
Item Manufacturer Model Performance or Other Specifications Power Requirements Comments
Water level meter MW-UP1, MW-UP2, MW-DP1 Solinst 101 - 300' 300' Batterymay need extra weight to get probe down the deviated borehole
in DP1
Pressure Transducer and Barometeric Data Reader MW-UP1, MW-UP2, MW-DP1 in Situ Rugged Reader 520 MHz with comm cable; Optional -- can use laptop Battery
Laptop Computer MW-UP1, MW-UP2, MW-DP1 Not required if using a Rugged Reader; also need comm cable Self-charging
Continuous Water Level Monitoring
Item Manufacturer Model Performance Specification Power Requirements Comments
MW-UP1, MW-UP2, MW-19D In Situ99240 Level Troll 400, 30
psiaLevel sensor range 11 m (35 ft); unvented
MW-DP1 In Situ99250 Level Troll 400,
100 psiaLevel sensor range 60 m (197 ft); unvented
MW-UP1 52000-03-01-02 Rugged twist-lock cable, poly, non-vented, no reel; max 100 ft; need 75 ft
MW-DP1 52000-03-03-02 Rugged twist-lock cable, poly, non-vented, small spool; max 900 ft; need 300 ft
Barometric data logger NA In Situ 89100 Baro Troll 1.14 bar ( 16.5 psi); requires backshell or cable Deploy in convenient location near wells
Pressure Transducer and Barometric Data Reader In Situ Rugged Reader 520 MHz with comm cable; Optional -- can use laptop
Laptop Computer Must have if not using Rugged Reader; also need comm cable Self-charging
All Wells
Tubing
MW-UP2, Background Well
MW-UP1, MW-UP2, MW-DP1Or equivalent; Also need Solution Zero Oxygen; Solution-Zobell;
and Solution .447s ConductivitySpecified in QAPP SOP SA-003
Self-charging
Use laptop or Rugged Reader; need comm cable either way; Win
Situ software will come with purchase or rental
Use laptop or Rugged Reader; need comm cable either way; Win
Situ software will come with purchase or rental
BatteryPressure Transducers
Data cables
Use laptop or Rugged Reader; need comm cable either way; Win
Situ software will come with purchase or rental
Battery
Not specified
Generator
N/A
In Situ 52000-03-02-02 Rugged twist-lock cable, poly, non-vented, small spool; max 500 ft; need 210 ft N/A
Grundfos
Redi-Flo2
Not specified
Not specified
Not specified
Not specified
NH-3964-2014-D Nobis Engineering, Inc.
Table 3-5
Monthly Monitoring Locations
Ely Copper Mine Superfund Site OU2/OU3
Vershire, Vermont
Page 1 of 2
1834 Tyson/1854 Pollard Adit UMW UMW X X X Determine if flow is emanating from underground mine working
1850 Pollard Adit UMW UMW X X X Determine if flow is emanating from underground mine working
1861 Pollard Adit UMW UMW X X X Determine if flow is emanating from underground mine working
Deep Adit UMW UMW X X X Determine if flow is emanating from underground mine working
Main Adit UMW UMW X X X Determine if flow is emanating from underground mine working
Shaft #4 UMW UMW X X X Determine if flow is emanating from underground mine working
SW above Main Adit Surface Water UMW X X X Determine if surface water is contributing to Main Adit water
FS-01 Surface Water EB-UR X X X X Assess surface water flow from EB-UR
FS-02 Surface Water EBT3 X X X X Assess surface water flow from EBT3
FS-03 Surface Water EBT2 X X X X Assess surface water flow from Pond 5 discharge
FS-04 Surface Water EBT2 X X X X Assess surface water flow upstream of EB-MR confluence and downstream of EBT3 confluence
FS-05 Surface Water EB-LR X X X X Assess surface water flow downstream from EBT2 confluence
BOM-01 Bedrock UWA X Monitor site-wide groundwater elevations
BOM-03 Bedrock UWA X Monitor site-wide groundwater elevations
MW-01A Shallow Overburden Smelter/Slag X Monitor site-wide groundwater elevations
MW-01B Deep Overburden Smelter/Slag X Monitor site-wide groundwater elevations
MW-01C Shallow Bedrock Smelter/Slag X Monitor site-wide groundwater elevations
MW-02A Shallow Overburden Smelter/Slag X Monitor site-wide groundwater elevations
MW-02B Deep Overburden Smelter/Slag X Monitor site-wide groundwater elevations
MW-02C Shallow Bedrock Smelter/Slag X Monitor site-wide groundwater elevations
MW-03C Shallow Bedrock ORB X Monitor site-wide groundwater elevations
MW-04A Shallow Overburden LWA X Monitor site-wide groundwater elevations
MW-04C Shallow Bedrock LWA X Monitor site-wide groundwater elevations
MW-05A Shallow Overburden UWA X Monitor site-wide groundwater elevations
MW-05B Deep Overburden UWA X Monitor site-wide groundwater elevations
MW-05C Shallow Bedrock UWA X Monitor site-wide groundwater elevations
MW-06A Shallow Overburden UWA X Monitor site-wide groundwater elevations
MW-06C Shallow Bedrock UWA X Monitor site-wide groundwater elevations
MW-07A Shallow Overburden Background X Monitor site-wide groundwater elevations
MW-07C Shallow Bedrock Background X Monitor site-wide groundwater elevations
MW-08A Shallow Overburden UWA X Monitor site-wide groundwater elevations
MW-09A Shallow Overburden UWA X Monitor site-wide groundwater elevations
MW-09C Shallow Bedrock UWA X Monitor site-wide groundwater elevations
MW-10B Deep Overburden Smelter/Slag X Monitor site-wide groundwater elevations
MW-10C Shallow Bedrock Smelter/Slag X Monitor site-wide groundwater elevations
MW-11A Shallow Overburden Smelter/Slag X Monitor site-wide groundwater elevations
MW-11C Shallow Bedrock Smelter/Slag X Monitor site-wide groundwater elevations
MW-12C Shallow Bedrock UWA X Monitor site-wide groundwater elevations
MW-13A Shallow Overburden UWA X Monitor site-wide groundwater elevations
MW-14A Shallow Overburden EB-LR X Monitor site-wide groundwater elevations
MW-14C Shallow Bedrock EB-LR X Monitor site-wide groundwater elevations
MW-14D Deep Bedrock EB-LR X Monitor site-wide groundwater elevations
AquiferFlow
VelocityFlow Rate Rationale for SamplingMonitoring Location
Presence
of Flow
Water
LevelArea
NH-3964-2014-D Nobis Engineering, Inc.
Table 3-5
Monthly Monitoring Locations
Ely Copper Mine Superfund Site OU2/OU3
Vershire, Vermont
Page 2 of 2
AquiferFlow
VelocityFlow Rate Rationale for SamplingMonitoring Location
Presence
of Flow
Water
LevelArea
MW-15A Shallow Overburden EB-TZ X Monitor site-wide groundwater elevations
MW-16A Shallow Overburden EB-TZ X Monitor site-wide groundwater elevations
MW-17A Shallow Overburden LWA X Monitor site-wide groundwater elevations
MW-18A Shallow Overburden UWA X Monitor site-wide groundwater elevations
MW-19A Shallow Overburden UWA X Monitor site-wide groundwater elevations
MW-19C Shallow Bedrock UWA X Monitor site-wide groundwater elevations
MW-19D Deep Bedrock UWA X Monitor site-wide groundwater elevations
MW-20A Shallow Overburden LWA X Monitor site-wide groundwater elevations
MW-20C Shallow Bedrock LWA X Monitor site-wide groundwater elevations
MW-20D Deep Bedrock LWA X Monitor site-wide groundwater elevations
MW-21A Shallow Overburden LWA X Monitor site-wide groundwater elevations
MW-21C Shallow Bedrock LWA X Monitor site-wide groundwater elevations
MW-22A Shallow Overburden Tailing X Monitor site-wide groundwater elevations
MW-23A Shallow Overburden ORB X Monitor site-wide groundwater elevations
MW-24B Deep Overburden WC X Monitor site-wide groundwater elevations
MW-24C Shallow Bedrock WC X Monitor site-wide groundwater elevations
MW-25B Deep Overburden WC X Monitor site-wide groundwater elevations
MW-25C Shallow Bedrock WC X Monitor site-wide groundwater elevations
MW-26B Deep Overburden WC X Monitor site-wide groundwater elevations
MW-26C Shallow Bedrock WC X Monitor site-wide groundwater elevations
MW-DP1 Deep Bedrock BMW X Monitor site-wide groundwater elevations
MW-UP1 Deep Bedrock BMW X Monitor site-wide groundwater elevations
MW-UP2 Deep Bedrock BMW X Monitor site-wide groundwater elevations
TP-228-PZ Shallow Overburden WC X Monitor site-wide groundwater elevations
TP-230-PZ Shallow Overburden WC X Monitor site-wide groundwater elevations
SB-103 Deep Overburden ORB X Monitor site-wide groundwater elevations
SB-104 Deep Overburden ORB X Monitor site-wide groundwater elevations
SB-105 Deep Overburden ORB X Monitor site-wide groundwater elevations