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Final TO42 Site Survey Report
New and Expanded Monitoring Well Clusters
Location and Purpose - This site lies outside the north edge of the H&I section, between Central Road and Moyer Road, in the northeast quadrant of the Inner Cantonment. Drilling at the CS-MW-1 cluster will add a BS and a CC monitoring well adjacent to the existing CS-MW-1-LGR well, completing a cluster of three wells. The two new well locations are intended to align with existing CS-MW1-LGR in an east-west direction. CS-MW1-LGR will also be upgraded with new 3-inch diameter casing and screen.
Accessibility - The CS-MW-1 cluster location is accessible by gravel road from either Central Road or Moyer Road. The gravel road alongside CS-MW-1 is flat and in good condition. The road will be closed off to regular traffic while well installations are active. The site is flat and open except for fences, which restricts the workspace. The well locations are in a mowed strip of ground, with the H&I fence to the south and a barbed wire fence enclosing a food plot on the north. Available workspace between the fences varies from approximately 50 to 60 feet, widening westward slightly, and inhibits the turning radius of trucks and equipment. If the pasture fence is left in place, the BS and CC wells will have to be placed farther apart than originally planned to accommodate the drilling rigs, rig tender, and drill pipe trailers. Temporary removal or relocation of the barbed wire fence prior to drilling will allow easier and safer access to the site, and provide more space for anticipated large vehicle movements, equipment, IDW containers (roll-offs), casing and pipe running tasks. The fence would be replaced upon completion of the planned work.
Personnel requiring access to the site are Parsons field teams and vehicles, drilling subcontractor with rigs and trailers, water and vacuum trucks, backhoes, geophysical well logger with van, truck for IDW management (delivery and pick up of roll-off containers), and surveyors with a vehicle. Any adjustments to the fencing will require experienced fence menders with vehicle(s).
Utilities - There are no visible utilities at the CS-MW1 site. However, any utilities will need to be identified by the CSSA craft team, and a digging permit issued.
Other Site Issues - The inner casing at CS-MW1-LGR is 6-inch inner diameter steel (6-5/8-inch outer diameter), not PVC as at CS-MW-2-LGR. The outer surface casing is 8-inch diameter steel. The cement pad at CS-MW1-LGR is severely cracked and broken. The site is within an east-west trending fault zone.
Location and Purpose - This site is in the northeast quadrant of the Inner Cantonment, approximately 700 feet east of the H&I section. The site is in a clearing between wooded areas, about 300 feet east and upslope from Salado Creek. Proposed activities at CS-MW2 involve adding a CC well cluster adjacent to the existing CS-MW2-LGR well. CS-MW2-LGR will be upgraded with new 3-inch diameter casing and screen.
Accessibility - The CS-MW2 location is accessible by turning north onto the gravel road known locally as “SWMU Highway” from the east segment of Tenberg Drive, or by turning south onto SWMU Highway from North Outer Drive, approximately 200 feet east of Well CS-16. The northernmost route may be a more feasible access for large vehicles due to narrow roadways and sharp turns on the approach from the south. The gravel road alongside CS-MW2 is rocky in places but otherwise in relatively good condition. The short width of the clearing between the wooded areas may restrict placement of the proposed BS and CC wells to positions west of CS-MW2-LGR, down slope toward Area of Concern (AOC)-58.
Personnel requiring access to the site are Parsons field teams and vehicles, drilling subcontractor with rigs and trailers, water and vacuum trucks, backhoes, geophysical well logger with van, roll-off delivery truck, and surveyors with a vehicle.
Utilities - There are no visible utilities near the CS-MW2 site. However, any utilities will need to be identified by the CSSA craft team, and a digging permit issued.
Other Site Issues - The CS-MW2 location is in immediate vicinity of AOCs-42 and -58. These AOC boundaries may need more detailed definition to avoid overlap with a well site. Review of past geophysical data with respect to surface features will help site the new wells beyond the limits of the AOCs. The CS-MW2 site has the potential to become very muddy and slick during wet weather. The inner casing at CS-MW2-LGR is PVC with a 6-inch inner diameter. The cement pad at CS-MW2-LGR is in good condition but lacks protective bollards and is beginning to be undercut by surface soil erosion.
This site was surveyed as an original drilling location. Since the DQOs, this well has been removed from the program. The description has been left in this document for future reference.
Location and Purpose – The CS-MW3 cluster location is on the boundary between the North and East Pastures, in the central portion of the Outer Cantonment. The site is in a firebreak clearing next to the perimeter road of the North Pasture, approximately 1,250 feet east of the Inner Cantonment’s northeast corner. CS-MW3-LGR sits on a topographic saddle with hilltops a short distance to the north and south (Steele Hill). Installation of a CC monitoring well is planned for the CS-MW3 site.
Accessibility - The CS-MW3 site is accessed by gravel road through Gate 6 into the North Pasture. The Inner and Outer Cantonments are separated by a barbed wire fence from Gate 6 up to the CS-MW3 site, at which point the fence turns north through the center of the firebreak. At the point where the fence turns there is a cattle guard across the road with a double gate that opens westward. CS-MW3-LGR is on the east side of this cattle guard.
There are two current options for siting CS-MW3-CC. The primary location is in the firebreak, on the opposite side of the fence from, and 30 - 50 feet west of existing CS-MW3-LGR. The secondary location for CS-MW3-CC is in a clearing across the gravel road and to the south of CS-MW3-LGR. The immediate area is cleared of major vegetation for the firebreak. The site is generally rocky and moderately rugged. Open spaces available for staging of CS-MW3-CC installation are limited.
Personnel requiring access to the site are Parsons field teams and vehicles, drilling subcontractor with rigs and trailers, water and vacuum trucks, backhoes, geophysical well logger with van, IDW management truck (deliver and pick up roll-off containers), and surveyors with a vehicle.
Utilities - There is an overhead power line transecting the southeast portion of the site consisting of two lines of bare, heavy gauge copper wire, some sections of which are broken and hanging to the ground. This power line is non-functioning. While this line would not interfere with well installation at the primary CS-MW3-CC location described above, it may hinder work in the secondary location. There are no other visible utilities in the vicinity. However, any utilities will need to be identified by the CSSA craft team, and a digging permit issued.
Other Site Issues - The well completions will be in a firebreak. Cedar clearing and oak trimming may be needed to provide sufficient space for rigs, support vehicles, and containment. Some equipment and materials may have to be staged in open areas a short distance away from the work site. The gate at CS-MW3 may need to be modified to open to the east to avoid interference with drilling activities. Livestock traffic through the gate is a concern. Work at CS-MW3 will entail frequent passage through Gate 6, which is normally secure.
Location and Purpose - The CS-MW4 location is in the northeast quadrant of the Inner Cantonment. It lies approximately 600 feet south of the eastern segment of Tenberg Drive and 650 feet west of the East Pasture. The purpose of work at this site is to install CS-MW4-CC adjacent to existing CS-MW4-LGR.
Accessibility - The CS-MW4 site is accessed by gravel road from Tenberg Drive. The site is in gently eastwardly sloping pastureland. There is ample space for rig, vehicle, and equipment placement.
Personnel requiring access to the site are Parsons field teams and vehicles, drilling subcontractor with rigs and trailers, water and vacuum trucks, backhoes, geophysical well logger with van, roll-off delivery truck, and surveyors with a vehicle.
Utilities - There are no visible utilities in the area. However, any utilities will need to be identified by the CSSA craft team, and a digging permit issued.
Other Site Issues – There is a possibility of landfill material nearby to the south that will need to be avoided.
This site was surveyed as an original drilling location. Since the DQOs, this well has been removed from the program. The description has been left in this document for future reference.
Accessibility - The CS-MW5 site is alongside the paved East Outer Drive. This road is marked as one-way (to the south) along this segment. It may be necessary to permit the driller’s large rig and trucks to travel north (against the one-way) when leaving the site, as the road to the south becomes extremely steep. The existing CS-MW5-LGR wellhead is on a flat, stepped area near the hilltop. The Wells Hill summit is just beyond the East Pasture fence. The proximity of the East Pasture fence to the site narrows the available workspace between the road and fence. The ground slopes away to the north, west, and south. One of the new wells may have to be installed across the road from CS-MW5-LGR due to limited availability of level ground and depending on the driller’s space requirements.
Personnel requiring access to the site would be Parsons field teams and vehicles, drilling subcontractor with rigs, trailers, water and vacuum trucks, backhoes, geophysical well logger with van, roll-off delivery truck, surveyors with vehicle.
Utilities - There are no visible utilities in the area. However, any utilities will need to be identified by the CSSA craft team, and a digging permit issued.
Other Site Issues - Due to limited level ground, work may be slowed. Extra time may be needed for safe handling of long strings of pipe, casing, and for staging of equipment and supplies.
Location and Purpose - The proposed CS-MW11-LGR location is near the southwest corner of the Inner Cantonment. The site is approximately 275 feet southeast of the CSSA Wastewater Treatment Plant (WWTP).
Accessibility - The site is accessed via South Outer Drive. The site is a rocky, somewhat level, 1-acre area that was recently cleared of vegetation. Some large boulders and fallen trees will need to be moved.
Personnel requiring access to the site are Parsons field teams and vehicles, drilling subcontractor with rigs and trailers, water and vacuum trucks, backhoes, geophysical well logger with van, roll-off delivery truck, and surveyors with a vehicle.
Utilities - There are no visible utilities in the area. However, any utilities will need to be identified by the CSSA craft team, and a digging permit issued.
Other Site Issues - A gravel construction entrance/exit may be needed to facilitate truck traffic during muddy, wet weather. Old refuse (glass, buckets, and cans) are occasionally found on the ground surface. The site is very close to AOC-50, the WWTP, and an unnamed intermittent creek. A mobile home park with an open view of the site is nearby on the southern boundary of CSSA. Efforts should be made to minimize noise and dust due to the proximity of mobile homes south of the CSSA boundary. Client should be prepared to answer questions from concerned nearby residents.
CS-MW12-LGR, CS-MW12-BS, and CS-MW12-CC
Location and Purpose - The site proposed for the CS-MW12 cluster is in the northwest quadrant of the Inner Cantonment, approximately 200 feet west of H&I, between Road D-24 and a westerly gravel extension of Tenberg Drive. The purpose of work at this site is to install an LGR, BS, and CC monitoring well cluster.
Accessibility - The site generally consists of grassy, rocky, slightly sloping pastureland. There are clumps of heavy vegetation in the northeast section. Vegetation thins southward with greater grassland area exposed. The pasture meadow is bounded by improved and unimproved roads on all four sides, but there is no improved ingress. The site must be entered from the south or west due to drainage ditches along the roadsides in the north and east directions. There is ample space for rig, vehicle and equipment placement.
Personnel requiring access to the site are Parsons field teams and vehicles, drilling subcontractor with rigs and trailers, water and vacuum trucks, backhoes, geophysical well logger with van, roll-off delivery truck, and surveyors with a vehicle.
Utilities - There are no visible utilities in the area. However, any utilities will need to be identified by the CSSA craft team, and a digging permit issued.
Other Site Issues - A gravel construction entrance/exit may be needed to facilitate truck traffic during wet weather. Glass and metal refuse are lightly scattered over the surface. Bedrock appears to be exposed in some portions of the meadow.
This site was not surveyed as an original drilling location. Since the DQOs, this well has been added to the program. The description has been generalized from prior experience and general site knowledge.
Location and Purpose - The proposed location of the CS-MW15 cluster is located off-post on the property of RFR-10. The purpose of work at this site is to install an LGR, BS, and CC monitoring well cluster. Final location to be determined from geophysical surveys being conducted near AOC-65.
Accessibility - The drilling site is accessed from 25490 Old Fredericksburg Road. The site is on private property for which CSSA has already established an access agreement. Sensitivity to the privacy of the landowner must be maintained at all times. Extra care to keep the site clean and orderly will be conducted at all times.
Personnel requiring access to the site are Parsons field teams and vehicles, drilling subcontractor with rigs and trailers, water and vacuum trucks, backhoes, geophysical well logger with van, roll-off delivery truck, and surveyors with a vehicle.
Utilities – Off-post utilities will require clearance by utilizing the Texas One Call system (1-800-545-6005). Any private utility systems (water, gas, and power) installed by the landowner will also require location and marking.
Other Site Issues – None at this time.
This site was not surveyed as an original drilling location. Since the DQOs, this well has been added to the program. The description has been generalized from prior experience and general site knowledge.
Accessibility - The CS-MW16 site is accessed from North Outer Road. There is limited space for rig, vehicle, and equipment placement. The building that houses well CS-16 and the CSSA GAC unit limit the size of the work site. In addition, some of the space will be occupied by roll-offs for groundwater treatment during the drilling phase.
Personnel requiring access to the site are Parsons field teams and vehicles, drilling subcontractor with rigs and trailers, water and vacuum trucks, backhoes, geophysical well logger with van, roll-off delivery truck, and surveyors with a vehicle.
Utilities – Known utilities in this are include water, electrical, and communication lines. All utilities will need to be identified by the CSSA craft team, and a digging permit issued.
Other Site Issues – None at this time.