Please see the attached responses to Groundwater Modeling Workgroup action items GW-75, GW- 76, GW-77, GW80 and GW-81 for your review and consideration.
Pinto Valley Mining Corp. submitted a mining plan of operations proposing to expand mining operations onto National Forest System lands to access mineralization that extends onto claims on National Forest System lands, to extend the mine life for approximately 19 years, to address existing Open Pit slope instability in the southeastern portion of the pit, and to consolidate prior authorizations that are reasonably incident to extraction, transportation, and processing of mineral deposits.
The purpose of this investigation was to assess the Property and surrounding areas to identify the presence or potential presence of recognized environmental conditions (RECs) potentially resulting in environmental impacts to the Property.
Soil properties are measured or inferred from direct observations in the field or laboratory. Examples of soil properties are particle-size distribution, cation-exchange capacity, and salinity.
The January 2021 Rescinded draft ROD explains the Tonto National Forest’s rationale and documents the Tonto’s proposed decision to authorize uses of National Forest System land by issuing a road use permit and special use authorizations for pipeline and power line corridors associated with the project.
Abstracts below provide information on taxonomy, identification and description, biology, distribution, population trends, management, photos and illustrations and references as available for each special status species.
Temperatures in Arizona have risen about 2.5°F since the beginning of the 20th century. Recent upward trends in average temperatures and extreme heat are projected to continue. Under a higher emissions pathway, historically unprecedented increases in annual average temperature are projected during this century.
Following the Resolution Copper Groundwater Modeling Workgroup held on January 16th, SWCA forwarded an email communication detailing the questions from the U.S. EPA on January 25th (email provided in Appendix A). This memo provides responses to EPA’s comments and supporting information.
Some copper deposits can have up to a dozen strategic and critical mineral and materials as co- products, making copper a gateway mineral to these rare elements.
This is the Record of Decision (ROD) for the U.S. Department of Agriculture, Tonto National Forest's travel management decision to comply with the 2005 Travel Management Rule, 36 CFR 212 Subpart B, to provide a system of National Forest System roads, trails, and areas on National Forest System Lands that are designated for motor vehicle use.
