EA-NV-030-07-006

From Open Energy Information


NEPA Document Collection for: EA-NV-030-07-006
EA at Carson Lake Corral Geothermal Area for Geothermal/Well Field

EA for Exploration Drilling at Carson Lake Corral Geothermal Area for Geothermal/Well Field

Proposed Action

Ormat proposes to construct up to 11 well pads and may drill up to three wells per pad for geothermal resource exploration. Ormat would drill temperature gradient wells (TG wells), small diameter exploration wells (slim wells) and full-size exploration wells (exploration wells).


Data Completion Notes

Data entry complete based on info in EA.

Documents

FONSI:


 

<metadesc> : NEPA document related to geothermal resource areas </metadesc>

Resource Analysis

Resource Not
Present
Present,
Not
Affected
Present,
Potentially
Affected
Not
Indicated
Comment Applicant
Proposed
Mitigation
Agency
Imposed
Mitigation
Air Quality
"NEPA_Resource_Analysis" is not in the list of possible values (Not Present, Present, Not Affected, Present, Potentially Affected, Not Indicated) for this property.

 

 
CloseMitigation Measure Air Quality-1: H2S emissions shall be monitored during all phases of

drilling and testing and the results reported to the BLM regularly. If the monitoring reveals emissions exceeding the Nevada ambient air quality standard, an H2S abatement plan shall be developed and implemented. The abatement plan shall include additional control measures to ensure compliance with the emission limitation. Additional control measures could include, but would not be limited to, the following: 􀁸 Reduce the number of wells venting simultaneously, as applicable 􀁸 Implement additional wellhead abatement measures, such as caustic injection between the flash tank and the portable silencer Mitigation Measure Air Quality-2: Vehicle speeds shall be minimized on exposed soils to 15 miles per hour (mph) to reduce fugitive dust generation from vehicle travel. Mitigation Measure Air Quality-3: Diesel generators over 37 kW (50 horse power) shall be diesel-fired units manufactured after January 1996 that are certified to meet EPA Tier 1

Emission Standards and are equipped with an exhaust particulate filter system.
Areas of Critical Environmental Concern
"NEPA_Resource_Analysis" is not in the list of possible values (Not Present, Present, Not Affected, Present, Potentially Affected, Not Indicated) for this property.

 

   
Cultural Resources
"NEPA_Resource_Analysis" is not in the list of possible values (Not Present, Present, Not Affected, Present, Potentially Affected, Not Indicated) for this property.

 

 
CloseMitigation Measure Cultural Resources-1: Well pad sites B, C, and H would

require ground disturbance within areas of three historic properties that are potentially eligible for listing on the National Register of Historic Places (NRHP). The process for resolution of adverse effects shall be followed as defined in 36 CFR 800.6, which includes continued consultation, notifying the Council and determining their participation, developing a programmatic agreement, involving consulting parties, providing documentation, involving the public, etc. One option for resolution could include realizing the data potential of the sites under an appropriate data recovery plan, developed in consultation with SHPO and interested parties. Mitigation Measure Cultural Resources-2: Well pads shall be fenced and workers shall be trained to not access off-pad areas. Permitted archaeologists shall be responsible for assisting Navy, BLM, and/or BOR with protection, identification, and assessment of any cultural resources discovered during the operations. A Native American monitor and an archaeological monitor shall be present during any ground disturbing activities. The archeologist shall have the authority to halt all earth moving activities in the area of the discovery if prehistoric or historic artifacts are discovered until the find can be assessed. The applicant shall prepare a formal monitoring plan that shall be reviewed and approved by BLM and Nevada SHPO prior to construction fieldwork. Mitigation Measure Cultural Resources-3: Prior to commencement of each task of operations, Ormat shall conduct employee briefings to inform personnel of critical elements of compliance with the Archaeological Resources Protection Act (ARPA) and the National Historic Preservation Act (NHPA), along with pertinent Navy, BLM, and BOR requirements and expectations concerning the protection of natural, cultural, and current approved land uses. All Ormat employees and their contractors shall be informed before commencement of project operations that any effects on, defacement of, or removal and/or disturbance of archaeological, historical, or sacred material shall not be permitted. Violation of the laws that protect these resources shall be treated as law enforcement/administrative disciplinary action. Mitigation Measure Cultural Resources-4: If human remains or artifacts or any other items of cultural significance are encountered during project operations, all work within 300 feet of the remains shall cease and the remains shall be protected from further exposure or damage. The BLM (and Navy if on Navy managed lands; and BOR if on BOR managed lands; or SHPO if on private lands) shall be notified immediately per the monitoring plan for this project. .If human remains are found and are Native American, the BLM, Navy, and/or BOR shall follow the procedures set forth in 43 CFR Part 10, Native American Graves Protection and Repatriation Regulations. Procedures for handling the discovery of human remains must also follow the Reclamation Manual Directives and Standards LND 07-01 (Inadvertent Discovery of Human Remains on Reclamation Lands) if remains are located on BOR managed lands. If remains are found on private land, NRS 383 would be

implemented with SHPO as the lead agency.
Environmental Justice
"NEPA_Resource_Analysis" is not in the list of possible values (Not Present, Present, Not Affected, Present, Potentially Affected, Not Indicated) for this property.

 

   
Prime or Unique Farmlands
"NEPA_Resource_Analysis" is not in the list of possible values (Not Present, Present, Not Affected, Present, Potentially Affected, Not Indicated) for this property.

 

   
Floodplains
"NEPA_Resource_Analysis" is not in the list of possible values (Not Present, Present, Not Affected, Present, Potentially Affected, Not Indicated) for this property.

 

   
Invasive, Nonnative Species
"NEPA_Resource_Analysis" is not in the list of possible values (Not Present, Present, Not Affected, Present, Potentially Affected, Not Indicated) for this property.

 

 
CloseMitigation Measure Biology-2: Monitoring and treatment of the well pads and access

roads for invasive, non-native species shall be required for the duration of exploration. Any weeds found in the roads or well pads would be removed completely and discarded in an

appropriate manner.
Native American Concerns
"NEPA_Resource_Analysis" is not in the list of possible values (Not Present, Present, Not Affected, Present, Potentially Affected, Not Indicated) for this property.

 

   
Threatened and Endangered Species
"NEPA_Resource_Analysis" is not in the list of possible values (Not Present, Present, Not Affected, Present, Potentially Affected, Not Indicated) for this property.

 

   
Wastes Hazardous or Solid
"NEPA_Resource_Analysis" is not in the list of possible values (Not Present, Present, Not Affected, Present, Potentially Affected, Not Indicated) for this property.

 

 
CloseMitigation Measure Hazards-1: A hazardous material spill and disposal contingency plan

shall be developed, which shall describe the methods for cleanup and abatement of any

petroleum hydrocarbon spill.
Wetlands and Riparian Zones
"NEPA_Resource_Analysis" is not in the list of possible values (Not Present, Present, Not Affected, Present, Potentially Affected, Not Indicated) for this property.

 

   
Wild and Scenic Rivers
"NEPA_Resource_Analysis" is not in the list of possible values (Not Present, Present, Not Affected, Present, Potentially Affected, Not Indicated) for this property.

 

   
Wilderness
"NEPA_Resource_Analysis" is not in the list of possible values (Not Present, Present, Not Affected, Present, Potentially Affected, Not Indicated) for this property.

 

   
BLM Sensitive Species
"NEPA_Resource_Analysis" is not in the list of possible values (Not Present, Present, Not Affected, Present, Potentially Affected, Not Indicated) for this property.

 

 
CloseMitigation Measure Biology-1: A certified biologist shall do a site assessment prior to any

project activities. If Nevada oryctes, Lahontan beardtongue, or Nevada dune beardtongue are found to be present, they shall be marked with fencing and flags and be avoided. If avoidance is not possible, the plant(s) shall be transplanted by a qualified biologist to an

area adjacent to the area of construction, and marked with fencing and flags.
Soils
"NEPA_Resource_Analysis" is not in the list of possible values (Not Present, Present, Not Affected, Present, Potentially Affected, Not Indicated) for this property.

 

 
CloseMitigation Measure Geology-1: A site drainage and runoff management plan shall be

prepared. All new access roads will comply with the plan order to minimize erosion and offsite sedimentation. Mitigation Measure Geology-2: Topsoil piles shall be covered to minimize wind erosion of

dust during wind storms.
Access and Transportation
"NEPA_Resource_Analysis" is not in the list of possible values (Not Present, Present, Not Affected, Present, Potentially Affected, Not Indicated) for this property.

 

 
CloseMitigation Measure Land Use-1: Cattle guards shall be installed on the roads that provide

access to the project area to deter cattle from entering the project area. Additionally, all well pads shall be fenced to prevent accidental damage to equipment from cattle and to prevent injury to cattle. Entrances to the well pads shall be gated or a cattle guard will be used. Fences will be removed after reclamation of the pads. Mitigation Measure Land Use-2: The applicant shall provide NAS Fallon with all project plans including drilling locations and potential testing times, and the maximum height of equipment that shall be used prior to placing any equipment on any well pads in the project area. The applicant shall only place equipment on the project site after coordinating and receiving approval from NAS Fallon Operations. The applicant shall follow all use restrictions requested by NAS Fallon Operations. That is, the geothermal project shall not to interfere with Naval operations. Mitigation Measure Traffic-1: Employees shall be informed that vehicles are not to be used on any canal levee access roads. Mitigation Measure Traffic-2: The applicant shall record the condition of all local and BOR maintenance roads that will be accessed during the project implementation. Recordation shall include written descriptions and photo documentation. The applicant shall repair any damage to the roads or road hazards caused by the project to previous conditions. The applicant shall maintain the roads during the course of the project and shall not interfere

with any access as required by the BOR.
Water Quantity
"NEPA_Resource_Analysis" is not in the list of possible values (Not Present, Present, Not Affected, Present, Potentially Affected, Not Indicated) for this property.

 

 
CloseMitigation Measure Water Resources-1: A site drainage and runoff management plan

shall be prepared. The plan shall identify equipment and procedures used for containment and recovery of accidental spills. Mitigation Measure Water Resources-2: Containment berms shall be constructed around all hazardous or potentially hazardous materials storage areas, handling areas, loading and unloading zones. Containment shall be 110 percent of storage volume and the berms shall be earthen but lined with plastic or an impermeable material. Mitigation Measure Water Resources-3: Silt fencing and/or other erosion control devices (straw waddle, etc.) shall be placed between the access road to Site A and Grimes Slough Extension (at the western edge of the proposed road) during construction of the access road. The silt fencing and/or devices shall be removed after road construction. Mitigation Measure Water Resources-4: Silt fencing and/or other erosion control devices (straw waddle, etc.) shall be placed between well pad G (at the edge of the well pad) and the nearby waterway during construction of the well pad. The silt fencing and/or devices shall be removed after pad construction. If additional aggregate is added to the access road to Site G, then silt fencing or other erosion control devices shall be placed between the road and the waterway, where the road is within 650 feet of the waterway, to prevent erosion of the waterway during placing aggregate on the road. The silt fencing and/or other

devices shall be removed after road construction.