SOW_for_Inventory_of_Abandoned_Mining_Features_in_New_Mexico_rev.docx

NM BLM AML Inventory Statement of Work Inventory of Abandoned Mining Features in New Mexico

1. Purpose of Work The Bureau of Land Management (BLM) has developed a database of Abandoned Mining Features on BLM Lands throughout the State of New Mexico. In support of this effort, the BLM is requesting a full inventory of Mining Features within Mining Districts, to be conducted throughout New Mexico in the following counties Bernalillo, Catron, Cibola, Dona Ana, Grant, Hidalgo, Rio Arriba, Sandoval, Santa Fe, San Juan, San Miguel, Sierra, Socorro, and McKinley Counties in New Mexico (See Attachment 1). This is a base year contract with a 4-year option to extend the services.

This project calls for the ground truthing and inventory of not previously known features, mapping of the sites, development of a digital GIS database of the features inventoried as well as a spreadsheet of all the features occurring on public lands within the counties listed above. The features consist of shafts, adits, waste rock piles, tailings piles, pits, and trenches, etc. The starting point of the inventory can be discussed prior to commencement of work.

2. Project Task The BLM estimates that approximately 2,000 mining features will be ground truth and inventoried per year across the project area, with 4 additional option years. (Figure 1. Map). To some degree, productivity will be dependent on topography, site-specific terrain, weather, and distance to and from the workstation, the type of feature requiring different methods of inventorying.

The feature ground truth and inventory require the use of a handheld GPS unit (Supplied by Government) to record and confirm feature location(s) in the form of lines, points, and polygons. Attributes to be collected are the type of feature, depth, danger level, access, etc., Each GPS unit is “loaded” with a data dictionary that informs the operator of what kind of information is required during inventory. Each feature will need to have at a minimum of three photos; the larger features such as waste rock piles will require more photos. As the feature inventories are collected, the electronic information will be uploaded into the Abandoned Mining Feature Database. The transfer of data will have to be completed on a weekly basis as to not lose any data.

The data transfer can be electronic or supplied on a storage device. The final dataset will be submitted as an Abandoned Mining Feature Layer of inventoried features, the data will be quality checked prior to acceptance of the weekly product and before acceptance of the final product.

through use of Geographic tools and ground-truthing the data against known data points in the areas being inventoried.

6. Schedule and Deliverables

A. Conduct inventory of abandoned mining features, recording location of each type of feature (shafts, adits, waste rock piles, tailings piles, pits, and trenches, etc.) in GPS point, line, and polygon data, as specified in BLM provided data dictionary.

B. GPS Assess and describe the site, as well as all the mining features as to the degree of physical danger (Extreme, High Moderate and Low).

C. Provide a final report, each year of the contract by June 30, of the number of sites inventoried, all features inventoried at each site, and the number of features completed.

7. Quality Assurance Surveillance Plan Data gathered will be inspected by the COR for:

1. Data related to each feature will be checked for completeness, accuracy and conformance of both electronic and hard copy.

2. The inspection will include validation of information using Geospatial tools.

3. The inspection will include validation of each picture for quality and that the photos are correctly assigned to the corresponding feature.

4. Field verification of features inventoried will be chosen at random and field checked by COR.

Figure 1 Overview Map of the Project Area.

image1.jpeg