C05_Attach 2 - SOW_Forestwide Decommissioning.docx

US Department of Agriculture (USDA)

Statement of Work

Contents

Project Forestwide Decommissioning

General Information

1.0 Scope of Work

The project consists of removal of toilet building located at the Ward Lake Campground, properly abandoned two water wells (Lakeview and Beaver Lake CGs), and removal of water concrete tank at Beave Lake CG.

2.0 Background

The Grand Mesa, Uncompahgre and Gunnison National Forests are working on removing unusable structures within the forests. The work on this project will be on three different campgrounds: Ward Lake located in Delta County Colorado; Beaver Lake located in Gunnison County Colorado and Lakeview also located in Gunnison County Colorado. See location maps and structures information below.

Contractor Requirements

3.0 Technical Requirements / Tasks

Ward Lake Campground - Toilet building 2122001

· Pump existing sewer tank.

· Remove existing building and sewer tank. Approximate building area is 70 sqft.

· Disposed debri properly at approved State/County land field.

· Regrade disturbed area to match exiting slope. Clean material may be required to acquire proper ground grade.

Lakeview Campground – water well

· Contact power company to secure safe disconnection of electricity.

· Follow Code of Colorado Regulations for proper abandonment of wells Division of Water Resources 2 CCR 402-2 at Lakeview Campground.

· Forest Service will submit the forms to the State.

· Contractor will provide information required to complete the form related to the work completed.

Beaver Lake Campground – Concrete tank and water well

· Contact power company to secure safe disconnection of electricity.

· Follow Code of Colorado Regulations for proper abandonment of wells Division of Water Resources 2 CCR 402-2 at Beaver Lake Campground.

· Forest Service will submit the forms to the State.

· Contractor will provide information required to complete the form related to the work completed.

· Remove concrete well concrete slab with minimum ground disturbance

· Remove concrete tank.

· Disposed debri properly at approved State/County land field.

· Regrade disturbed area to match exiting slope. Clean material may be required to acquire proper ground grade.

4.0 Deliverables / Schedule

Provide demolition schedule for the structures.

Remove and disposed of all structures.

Conduct well abandonment per State regulations.

Provide information for the well abandonment form.

5.0 Contractor’s Key Personnel

Provide key personnel name and qualifications for completing the work.

Attachment Location Map and pictures for the assets to be removed/decommissioned Ward Lake Campground – location for toilet building 2122001 Latitude 39.03923, Longitude -107.9794

Directions from Supervisor’s Office (Delta Colorado):

Turn right onto S Main St for 2.2 mi Turn right onto CO-92 E for 3.8 mi Turn left onto CO-65 N for 26.8 mi Turn right onto Baron Lake Dr for 0.6 mi Turn right onto Ward Lake Campground Destination will be on the left

Toilet building 2122001 photos

Lakeview Campground – location of water well Latitude 38.81740, Longitude -106.5823

Directions from Gunnison District Office (Gunnison Colorado):

Head toward E Georgia Ave for 0.3 mi Turn left onto E Denver Ave for 0.2 mi Turn right onto CO-135 N/N Main St Continue to follow CO-135 N for 9.7 mi Turn right onto Co Rd 742 for 21.7 mi Turn right onto Lakeview Campground (Forest Service Rd 742.1H) for 0.2 mi Water well located off Forest Service Rd 742.1H2

Lakeview water Well

Beaver Lake Campground location of water well and concrete tank Latitude 38.250495, Longitude -107.544667

Directions from Ouray District Office (Montrose Colorado):

Exit the parking lot toward US-550 N/S Townsend Ave Turn right onto E Main Street (US-50 E) for 21 mi Turn right onto Cimarron Rd and Co Rd 858 for 16 miles Turn right onto Beaver Lake Campground

Notes:

Concrete tank – located off the NFSR 858 Water well located North of the Beaver Lake

Concrete tank

Beaver Lake water well

Excerpt of Rule 16 and Rule 17 The following is for information. This excerpt of Rule 16 and Rule 17 includes relevance information for contractors bidding on the Forestwide Decommissioning for quick review. Please read the “Board of Examiners of Water Well Construction and Pump Installation Contractors Rules and Regulations for Water Well Construction, Pump Installation, Cistern Installation, and Monitoring and Observation Hole/Well Construction - 2 CCR 402-2” for additional State requirements for well abandonment.

See Division of Water Resources 2 CCR 402-2 for full regulation.

2 CCR 402-2-16 - STANDARDS FOR PLUGGING, SEALING, AND ABANDONING WELLS AND BOREHOLES

Basis and Purpose: The statutory authority for this Rule is found in sections 37-91-101(1); 37-91-104(1)(c), (j), & (k); 37-91-106(3); 37-91-109(1); and 37-91-110(2), C.R.S. The purpose of this Rule is to identify the minimum standards for the proper abandonment of water wells and other excavations constructed into the ground that, if not adequately sealed and abandoned, present a risk to the health and safety of Colorado's shared groundwater resources.

16.1 General - The plugging, sealing, and abandonment of all wells, monitoring and observation wells, monitoring and observation holes and test holes that are no longer intended for use, and the plugging, sealing, and abandonment of collapsed or unusable boreholes, and other incomplete wells or excavations is necessary to prevent contamination of groundwater and the migration of water through the borehole. It is the ultimate responsibility of the well owner to have an existing well properly plugged, sealed, and abandoned. The well construction contractor or authorized individual is responsible for notifying the well owner in writing of these plugging requirements.

16.1.1 In the event a borehole(s) is not completed for the intended purpose, the contractor will notify the well owner of the well owner's responsibility for the proper abandonment of the borehole(s) according to Rule 16.1. If the well owner does not agree to allow the contractor to abandon the borehole(s), the contractor must notify the Board of Examiners, in writing, of the existence of the borehole(s) and the contractor's effort to notify the well owner of the well owner's abandonment responsibilities under Rule 16.1

16.1.2 Persons Authorized to Plug, Seal, and Abandon Wells:

16.1.2.1 Licensed water well construction contractors are authorized to plug, seal, and abandon all types of wells or holes.

16.1.2.2 Licensed pump installation contractors may plug, seal and abandon only those wells that do not require the removal of casing that penetrates more than one aquifer or the ripping or perforating of casing opposite confining layers.

16.1.2.3 Authorized individuals may plug, seal, and abandon only those monitoring and observation wells and holes, dewatering wells, piezometer holes, and test holes that do not penetrate through a confining layer.

16.1.2.4 Well owners may plug, seal, and abandon only those wells they own that do not require the removal, ripping, or perforating of casing in accordance with this Rule 16. Well owners abandoning their own wells must consult with a licensed water well construction contractor or Board staff prior to abandoning their well.

16.1.3 Materials used for backfilling must be clean, inert, and free from contaminants. The well casing may be cut off below land surface so that it will not interfere with the anticipated use of the land. If the casing is cut off below land surface, the uppermost five (5) feet of the remaining casing must be filled with grout or a watertight cover must be permanently attached to the remaining casing and the excavation filled with materials that are not more permeable than the surrounding soils and adequately compacted to prevent settling.

16.2 Abandonment of Wells or Boreholes in Type I Aquifers (confined aquifers) Wells which were constructed through more than one aquifer must be plugged and sealed by placing a cement grout plug at the confining layer above each aquifer. If well construction records do not show that the casing opposite each confining layer was grouted when originally installed, the casing must be either completely removed from the hole, or perforated or ripped opposite such layer prior to placing the grout plug. Plugs must be no less than sixty (60) feet in length and must be designed to withstand the maximum potential hydrostatic pressure differential between the aquifers. The well casing, except for the grout plug intervals, must be completely filled to the land surface with clean native clays, cement, or high-solid bentonite grout. A watertight cover must be permanently welded or attached to the top of the casing.

16.3 Abandonment of Wells or Boreholes in Type II (unconfined bedrock aquifers) and Type III Aquifers (unconsolidated aquifers) - Wells completed into unconfined bedrock aquifers and unconsolidated aquifers must be plugged, sealed, and abandoned by filling the well to the static water level with clean sand or clean gravel. Between the static water level and the ground surface, the borehole must be filled with clean native clays, cement, drill cuttings, or high solid bentonite grout to the ground surface. The uppermost five (5) feet of casing must be filled with grout or a permanent watertight cover must be installed at the top of the casing. If casing is removed, the hole must be filled as described above to within five (5) feet of the ground surface. The top five (5) feet of the hole must be filled with materials that are not more permeable than the surrounding soils that are adequately compacted to prevent settling.

16.4 Abandonment of Other Structures:

16.4.1 Abandonment of Dewatering Wells, Monitoring and Observation Holes, and Piezometer Holes - Dewatering wells, monitoring and observation holes, and piezometer holes must be plugged, sealed, and abandoned either (1) pursuant to Rules 16.2 or 16.3, as appropriate, or (2) by removing all casing that was installed and by filling the hole(s) with clean native clays, cement, or high solid bentonite grout to within five (5) feet of the ground surface. If the casing cannot be removed, the top five (5) feet of the hole must be filled with materials that are not more permeable than the surrounding soils that are adequately compacted to prevent settling.

16.4.2 Abandonment of Test Holes - Test holes must be plugged, sealed, and abandoned pursuant to the requirements of Rule 16.4.1 or by removing any casing or equipment from the hole and backfilling the hole with drill cuttings, clean native clays, cement, or high solid bentonite grout to the ground surface, and adequately compact the material to prevent settling.

16.5 A well for which a replacement well has been permitted and constructed must be plugged, sealed, and abandoned within sixty (60) days after the completion of the replacement well, unless otherwise re-permitted by the State Engineer.

2 CCR 402-2-17 - REPORTING REQUIREMENTS

17.1.4 Well Abandonment Report - A Well Abandonment Report must be submitted for each test hole penetrating a confining layer between two distinct aquifers, well, monitoring and observation hole or well, or dewatering system that has been plugged, sealed, and abandoned. The report must identify the abandoned well or hole by location and permit number, monitoring hole number, or other official identification of location. The report must contain a detailed description of how the well or hole was plugged, including types and amounts of materials used, and the placement method and intervals of those materials. A Well Abandonment Report must be submitted to the State Engineer upon the cessation of use of test holes penetrating a confining layer between two distinct aquifers, monitoring and observation wells or holes, or dewatering wells.

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