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Environmental Assessment Lomitas Negras Arroyo Stabilization Project Rio Rancho, Sandoval County, New Mexico Southern Sandoval County Arroyo Flood Control Authority

Draft Environmental Assessment Lomitas Negras Arroyo Stabilization Project Rio Rancho, Sandoval County, New Mexico Southern Sandoval County Arroyo Flood Control Authority

HMGP DR‐4079‐NM, Project #11

January 2017

The Southern Sandoval County Arroyo Flood Control Authority (SSCAFCA) proposes to construct an off‐channel detention pond and bank stabilization features in the Arroyo de las Lomitas Negras to protect adjacent and downstream properties from flood and erosion damage, as well as reduce sediment deposition in downstream facilities. The project area is located in Rio Rancho, Sandoval County, New Mexico. It appears on the Loma Machete and Bernalillo, New Mexico US Geological Survey 7.5‐minute quadrangle maps.

The nature of flood events in southern Sandoval County, New Mexico, which includes the City of Rio Rancho, is characterized by intense, short‐lived thunderstorms. These storms drop significant amounts of rainfall in a very short time, creating a surge of stormwater that flows in the arroyos or drainage ditches downstream toward the Rio Grande. As this area of New Mexico is semi‐arid, the soils in southern Sandoval County are generally highly erodible. Runoff from storm events can rapidly result in localized flooding and erode large segments of arroyo bank.

When Rio Rancho was first platted in the 1960s, there were very few locations where sufficient property was retained in the public domain for the conveyance of stormwater. Consequently, residential and commercial properties have been impacted by large flows and erosion of watercourses. In developed areas of the city, this can result in damage to structures and other property, as well as pose a threat to the safety of inhabitants.

In 2006, a large storm event occurred in the watershed, which resulted in overtopping of Saratoga Road and damage to the infrastructure associated with this roadway. Additionally, during the 2006 storm, localized flooding occurred at Enchanted Hills Elementary School and impacted New Mexico Highway 528 (NM 528), a significant arterial roadway.

The project is designed to provide increased flood protection and reduce potential for damage to downstream areas where existing public infrastructure and residential development occur. Such areas are prone to damage by high flows and bank erosion resulting from storm events.

This draft EA has been prepared to analyze the potential consequences to the natural and human environment associated with the Proposed Action, the No Action Alternative, and other potential alternatives per the National Environmental Policy Act (NEPA) (42 United States Code [USC] 55 parts 4321 et seq., 2000), the President’s Council on Environmental Quality (CEQ) implementing regulations

SizePublication Date
Icon for file of type application/pdfSEA SSCAFCA Lomitas Negras Scope Modification

Southern Sandoval County Arroyo Flood Control Authority (SSCAFCA) submitted an application to the Federal Emergency Management Agency (FEMA) through the New Mexico Department of Homeland Security and Emergency Management (NMDHSEM) for a grant under FEMA’s Hazard Mitigation Grant Program (HMGP) following Major Disaster FEMA-DR-4079-NM. This program, as authorized under Section 404 of the Robert T. Stafford Disaster Relief and Emergency Assistance Act, provides grants to states and local governments to implement long-term hazard mitigation measures after a major disaster declaration.

 

FEMA provided funding to SSCAFCA for the construction of an off-channel detention pond and bank stabilization features in the Arroyo de las Lomitas Negras to protect adjacent and downstream properties from flood and erosion damage and to reduce sediment deposition in downstream facilities. An Environmental Assessment (EA) was prepared to assess the potential impacts of this work on the human and natural environment in accordance with the National Environmental Policy Act of 1969 (NEPA), the Council on Environmental Quality (CEQ) regulations implementing NEPA (40 CFR Parts 1500 – 1508), FEMA’s Instruction 108-1-1 for implementing NEPA, the National Historic Preservation Act, Executive Order 11988, Executive Order 11990, and 44 CFR Part 9, concluding with a Finding of No Significant Impact (FONSI) on February 9, 2017.

 

Interested persons are hereby notified that SSCAFCA has submitted a scope of work modification to FEMA to extend the bank stabilization area proposed in the original 2017 EA.

 

A draft Supplemental Environmental Assessment (SEA) and draft FONSI have thus been prepared to assess the potential impacts of the proposed additional bank stabilization work on the human and natural environment in accordance with the National Environmental Policy Act of 1969 (NEPA), the Council on Environmental Quality (CEQ) regulations implementing NEPA (40 CFR Parts 1500 – 1508), FEMA’s Instruction 108-1-1 for implementing NEPA, the National Historic Preservation Act, Executive Order 11988, Executive Order 11990, and 44 CFR Part 9. The draft SEA evaluates alternatives that provide for compliance with applicable environmental laws.  The alternatives evaluated include (1) no action; (2) the proposed action to extend the original proposed bank stabilization features. The project area is located in Rio Rancho, Sandoval County, New Mexico near Saratoga Drive and NM 528 in the vicinity of Enchanted Hills Elementary School.

0.32M
Icon for file of type application/pdfAppendix A Figures

Southern Sandoval County Arroyo Flood Control Authority (SSCAFCA) submitted an application to the Federal Emergency Management Agency (FEMA) through the New Mexico Department of Homeland Security and Emergency Management (NMDHSEM) for a grant under FEMA’s Hazard Mitigation Grant Program (HMGP) following Major Disaster FEMA-DR-4079-NM. This program, as authorized under Section 404 of the Robert T. Stafford Disaster Relief and Emergency Assistance Act, provides grants to states and local governments to implement long-term hazard mitigation measures after a major disaster declaration.

 

FEMA provided funding to SSCAFCA for the construction of an off-channel detention pond and bank stabilization features in the Arroyo de las Lomitas Negras to protect adjacent and downstream properties from flood and erosion damage and to reduce sediment deposition in downstream facilities. An Environmental Assessment (EA) was prepared to assess the potential impacts of this work on the human and natural environment in accordance with the National Environmental Policy Act of 1969 (NEPA), the Council on Environmental Quality (CEQ) regulations implementing NEPA (40 CFR Parts 1500 – 1508), FEMA’s Instruction 108-1-1 for implementing NEPA, the National Historic Preservation Act, Executive Order 11988, Executive Order 11990, and 44 CFR Part 9, concluding with a Finding of No Significant Impact (FONSI) on February 9, 2017.

 

Interested persons are hereby notified that SSCAFCA has submitted a scope of work modification to FEMA to extend the bank stabilization area proposed in the original 2017 EA.

 

A draft Supplemental Environmental Assessment (SEA) and draft FONSI have thus been prepared to assess the potential impacts of the proposed additional bank stabilization work on the human and natural environment in accordance with the National Environmental Policy Act of 1969 (NEPA), the Council on Environmental Quality (CEQ) regulations implementing NEPA (40 CFR Parts 1500 – 1508), FEMA’s Instruction 108-1-1 for implementing NEPA, the National Historic Preservation Act, Executive Order 11988, Executive Order 11990, and 44 CFR Part 9. The draft SEA evaluates alternatives that provide for compliance with applicable environmental laws.  The alternatives evaluated include (1) no action; (2) the proposed action to extend the original proposed bank stabilization features. The project area is located in Rio Rancho, Sandoval County, New Mexico near Saratoga Drive and NM 528 in the vicinity of Enchanted Hills Elementary School.

0.82M
Icon for file of type application/pdfAppendix C Section 106 Documentation

Southern Sandoval County Arroyo Flood Control Authority (SSCAFCA) submitted an application to the Federal Emergency Management Agency (FEMA) through the New Mexico Department of Homeland Security and Emergency Management (NMDHSEM) for a grant under FEMA’s Hazard Mitigation Grant Program (HMGP) following Major Disaster FEMA-DR-4079-NM. This program, as authorized under Section 404 of the Robert T. Stafford Disaster Relief and Emergency Assistance Act, provides grants to states and local governments to implement long-term hazard mitigation measures after a major disaster declaration.

 

FEMA provided funding to SSCAFCA for the construction of an off-channel detention pond and bank stabilization features in the Arroyo de las Lomitas Negras to protect adjacent and downstream properties from flood and erosion damage and to reduce sediment deposition in downstream facilities. An Environmental Assessment (EA) was prepared to assess the potential impacts of this work on the human and natural environment in accordance with the National Environmental Policy Act of 1969 (NEPA), the Council on Environmental Quality (CEQ) regulations implementing NEPA (40 CFR Parts 1500 – 1508), FEMA’s Instruction 108-1-1 for implementing NEPA, the National Historic Preservation Act, Executive Order 11988, Executive Order 11990, and 44 CFR Part 9, concluding with a Finding of No Significant Impact (FONSI) on February 9, 2017.

 

Interested persons are hereby notified that SSCAFCA has submitted a scope of work modification to FEMA to extend the bank stabilization area proposed in the original 2017 EA.

 

A draft Supplemental Environmental Assessment (SEA) and draft FONSI have thus been prepared to assess the potential impacts of the proposed additional bank stabilization work on the human and natural environment in accordance with the National Environmental Policy Act of 1969 (NEPA), the Council on Environmental Quality (CEQ) regulations implementing NEPA (40 CFR Parts 1500 – 1508), FEMA’s Instruction 108-1-1 for implementing NEPA, the National Historic Preservation Act, Executive Order 11988, Executive Order 11990, and 44 CFR Part 9. The draft SEA evaluates alternatives that provide for compliance with applicable environmental laws.  The alternatives evaluated include (1) no action; (2) the proposed action to extend the original proposed bank stabilization features. The project area is located in Rio Rancho, Sandoval County, New Mexico near Saratoga Drive and NM 528 in the vicinity of Enchanted Hills Elementary School.

6.67M
Icon for file of type application/pdfAppendix B 2016 Biological Survey Report

Southern Sandoval County Arroyo Flood Control Authority (SSCAFCA) submitted an application to the Federal Emergency Management Agency (FEMA) through the New Mexico Department of Homeland Security and Emergency Management (NMDHSEM) for a grant under FEMA’s Hazard Mitigation Grant Program (HMGP) following Major Disaster FEMA-DR-4079-NM. This program, as authorized under Section 404 of the Robert T. Stafford Disaster Relief and Emergency Assistance Act, provides grants to states and local governments to implement long-term hazard mitigation measures after a major disaster declaration.

 

FEMA provided funding to SSCAFCA for the construction of an off-channel detention pond and bank stabilization features in the Arroyo de las Lomitas Negras to protect adjacent and downstream properties from flood and erosion damage and to reduce sediment deposition in downstream facilities. An Environmental Assessment (EA) was prepared to assess the potential impacts of this work on the human and natural environment in accordance with the National Environmental Policy Act of 1969 (NEPA), the Council on Environmental Quality (CEQ) regulations implementing NEPA (40 CFR Parts 1500 – 1508), FEMA’s Instruction 108-1-1 for implementing NEPA, the National Historic Preservation Act, Executive Order 11988, Executive Order 11990, and 44 CFR Part 9, concluding with a Finding of No Significant Impact (FONSI) on February 9, 2017.

 

Interested persons are hereby notified that SSCAFCA has submitted a scope of work modification to FEMA to extend the bank stabilization area proposed in the original 2017 EA.

 

A draft Supplemental Environmental Assessment (SEA) and draft FONSI have thus been prepared to assess the potential impacts of the proposed additional bank stabilization work on the human and natural environment in accordance with the National Environmental Policy Act of 1969 (NEPA), the Council on Environmental Quality (CEQ) regulations implementing NEPA (40 CFR Parts 1500 – 1508), FEMA’s Instruction 108-1-1 for implementing NEPA, the National Historic Preservation Act, Executive Order 11988, Executive Order 11990, and 44 CFR Part 9. The draft SEA evaluates alternatives that provide for compliance with applicable environmental laws.  The alternatives evaluated include (1) no action; (2) the proposed action to extend the original proposed bank stabilization features. The project area is located in Rio Rancho, Sandoval County, New Mexico near Saratoga Drive and NM 528 in the vicinity of Enchanted Hills Elementary School.

3.51M
Icon for file of type application/pdfFONSI Lomitas Negras Supplemental

Southern Sandoval County Arroyo Flood Control Authority (SSCAFCA) submitted an application to the Federal Emergency Management Agency (FEMA) through the New Mexico Department of Homeland Security and Emergency Management (NMDHSEM) for a grant under FEMA’s Hazard Mitigation Grant Program (HMGP) following Major Disaster FEMA-DR-4079-NM. This program, as authorized under Section 404 of the Robert T. Stafford Disaster Relief and Emergency Assistance Act, provides grants to states and local governments to implement long-term hazard mitigation measures after a major disaster declaration.

 

FEMA provided funding to SSCAFCA for the construction of an off-channel detention pond and bank stabilization features in the Arroyo de las Lomitas Negras to protect adjacent and downstream properties from flood and erosion damage and to reduce sediment deposition in downstream facilities. An Environmental Assessment (EA) was prepared to assess the potential impacts of this work on the human and natural environment in accordance with the National Environmental Policy Act of 1969 (NEPA), the Council on Environmental Quality (CEQ) regulations implementing NEPA (40 CFR Parts 1500 – 1508), FEMA’s Instruction 108-1-1 for implementing NEPA, the National Historic Preservation Act, Executive Order 11988, Executive Order 11990, and 44 CFR Part 9, concluding with a Finding of No Significant Impact (FONSI) on February 9, 2017.

 

Interested persons are hereby notified that SSCAFCA has submitted a scope of work modification to FEMA to extend the bank stabilization area proposed in the original 2017 EA.

 

A draft Supplemental Environmental Assessment (SEA) and draft FONSI have thus been prepared to assess the potential impacts of the proposed additional bank stabilization work on the human and natural environment in accordance with the National Environmental Policy Act of 1969 (NEPA), the Council on Environmental Quality (CEQ) regulations implementing NEPA (40 CFR Parts 1500 – 1508), FEMA’s Instruction 108-1-1 for implementing NEPA, the National Historic Preservation Act, Executive Order 11988, Executive Order 11990, and 44 CFR Part 9. The draft SEA evaluates alternatives that provide for compliance with applicable environmental laws.  The alternatives evaluated include (1) no action; (2) the proposed action to extend the original proposed bank stabilization features. The project area is located in Rio Rancho, Sandoval County, New Mexico near Saratoga Drive and NM 528 in the vicinity of Enchanted Hills Elementary School.

0.18M
Icon for file of type application/pdfNotice of Availability of the Draft Environmental Assessment for the Lomitas Negras Arroyo Stabilization Project, Rio Rancho, Sandoval County, New Mexico

Notice of Availability of the Draft Environmental Assessment for the Lomitas Negras Arroyo Stabilization Project, Rio Rancho, Sandoval County, New Mexico

HMGP DR-4079-NM Project #11

0.02M
Icon for file of type application/pdfDraft Environmental Assessment Lomitas Negras Arroyo Stabilization Project Rio Rancho, Sandoval County, New Mexico Southern Sandoval County Arroyo Flood Control Authority

Draft Environmental Assessment Lomitas Negras Arroyo Stabilization Project Rio Rancho, Sandoval County, New Mexico Southern Sandoval County Arroyo Flood Control Authority

HMGP DR‐4079‐NM, Project #11

January 2017

0.38M
Icon for file of type application/pdfAPPENDIX A: Figures

APPENDIX A: Figures

2.51M
Icon for file of type application/pdfAPPENDIX B: Supporting Documentation

APPENDIX B: Supporting Documentation

2.80M
Icon for file of type application/pdfAPPENDIX C: Correspondence

APPENDIX C:  Correspondence

2.83M