Bells Gap Amendment 1.pdf

1313 Sherman Street, Room 215, Denver, CO 80203 P 303.866.3567 F 303.832.8106 http://mining.state.co.us

John W. Hickenlooper, Governor | Robert Randall, Executive Director | Virginia Brannon, Director

1313 Sherman Street, Room 215 Denver, CO 80203

DATE: August 16, 2016

TO: All Bidders on the Bells Gap Project

FROM: Rachael Nickless, Division of Reclamation, Mining & Safety

RE: Amendment No. 1 to Bells Gap Project (PKA-17-774)

Thank you for your interest in the Bells Gap Project and attending the Pre-Bid Meeting on August 9, 2016. The following clarifications and amendments should be noted and incorporated into the bid documents:

FEATURE DESCRIPTION REVISIONS

1. FEATURE ID: BG06

Feature ID: BG06: See the attached Mine Site Field Form for Feature BG-06.

Feature BG-06 is an additional feature pending landowner consent.

2. FEATURE ID: BG01

Feature ID: BG01: Work Description amended as follows: Strip twelve inches (12”) of topsoil around the perimeter of the feature, for a distance of up to four feet (4’), and replace. All other specification remain the same.

3. FEATURE ID: BG02

Feature ID: BG02: Work Description amended as follows: Strip twelve inches (12”) of top soil and replace. All other specification remain the same

4. FEATURE ID: BG03

Feature ID: BG03: Work Description amended as follows: Strip twelve inches (12”) of top soil and replace. All other specification remain the same.

5. FEATURE ID: BG05

Feature ID: BG05: The feature dimensions are amended as follows: Depth of

Opening, Depth to Plug is revised to fifteen feet deep (15’); Excavation dimensions are increased to fifty feet by sixteen feet (50’x16’). Work Description amended as follows: Remove fence and set aside for landowner. Strip twelve inches (12”) of top soil and replace. Remove branches and wood from subsidence feature prior to backfill and set aside. Install twenty cubic yards (20cy) of imported rockfill in accordance with Backfill Closure specifications (Section 2.4, Materials, General Bid Specifications, 2009). All other specification remain the same.

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6. FEATURE ID: BG07

Feature ID: BG07: The feature dimensions are amended as follows: Depth of

Opening, Depth to Plug is revised to fifteen feet deep (15’). All other specification remain the same.

7. FEATURE ID: BG09

Feature ID: BG09: The work description is amended as follows: Remove fence and replace when work is completed. All other specification remain the same.

8. FEATURE ID: BG12

Feature ID: BG12: The feature dimensions are amended as follows: Depth of Opening, Depth to Plug is revised to fifteen feet deep (15’). All other specification remain the same.

9. FEATURE ID: BG14

Feature ID: BG14: The feature dimensions amended as follows: Depth of Opening, Depth to Plug is revised to thirty-five feet (35’) deep. The work description is amended as follows: Supply and install thirty cubic yards (30cy) of imported rockfill in accordance with Backfill Closure Specifications (Section 2.4, Materials, General Bid Specifications, 2009). All other specification remain the same.

10. FEATURE ID: BG16

Feature ID: BG16: The feature dimensions are amended as follows: Depth of

Opening, Depth to Plug is revised to fifteen feet deep (15’). The work description is amended as follows: Topsoil stripping and replacing is not required. All other specification remain the same.

11. FEATURE ID: BG17

Feature ID: BG17: The work description is amended as follows: Topsoil stripping and replacing is not required. All other specification remain the same.

12. FEATURE ID: BG19

Feature ID: BG19: The work description is amended as follows: Excavate grouping of three (3) holes. All other specification remain the same.

NEW BID ITEMS

ITEM 7.0 ADDITIONAL IMPORTED ROCKFILL

Supply and install ten cubic yards (10cy) of imported rockfill, per specifications, if required.

Measurement and Payment

Measurement for payment shall be made of the actual unit quantities provided and installed according to specification, at the unit cost indicated on the Bid Schedule.

CONTRACTOR QUESTIONS

1. Would it be possible to construct a temporary road from the waste pile to Features BG-07, BG-08, BG-09, BG-10, BG-11, BG-12, BG-18 and BG-19?

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A road between the waste pile and the features listed above can be constructed. Any roads constructed by the Contractor will need to be reclaimed.

2. The bid spec book calls for “hard, durable and well graded 12” material and sufficient finer particles to minimize the presence of voids when placed”. Do we need to order the material half 12” and half finer, say pit run?

Yes.

3. Could the mine waste piles by BG16 and BG17 be used as fill material at the north holes, assuming a deal could be negotiated with the owner?

Yes.

4. Do you have a phone number for the owner, I believe his name is Raymond Pfaffenhauser?

I have talked with Ray Pfaffenhauser and he said that he does not mind receiving calls.

His number is (719) 859-1770.

5. Are straw mulch and hand crimping required for the revegetation portion of this project?

General Bid Specifications, 2009, Section 20 Revegetation, 20.4.3 Mulches Mulch shall consist of hay or straw mulch, pest-free or weed-free to the extent possible.

Approximately 30 percent by weight of the mulch material shall be ten inches (10”) in length or longer. Rotted, caked or moldy material will not be accepted. Hay or straw mulch shall be applied uniformly at the rate of two (2) tons per acre. Hydromulch shall be applied at the rate of one and a half (1 ½) tons per acre.

General Bid Specifications, 2009, Section 20 Revegetation, 20.5.5 Mulching Hay or straw mulch shall be applied uniformly at the rate of two (2) tons per acre over seeded areas. Hydromulch shall be applied at the rate of one and a half (1 ½) tons per acre. Mulch shall be applied to the designated areas immediately after seeding and not later than 24 hours after seeding has been performed. Mulching shall not be done when the wind velocity exceeds fifteen (15) miles per hour.

General Bid Specifications, 2009, Section 20 Revegetation, 20.5.6 Stabilizing Mulch On areas larger than one (1) acre a mulch crimper shall be used to stabilize or anchor the mulch into the soil after hay or straw mulch has been spread. The crimper shall be equipped with scrapers to keep the blades clean. Spacing of crimper blades shall not exceed nine inches (9”). On areas less than one (1) acre crimping shall be achieved by hand with a suitable tool, such as a spade, on 18” centers.

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6. Do we need a gate guard when hauling in material at the entrance to BG1 or can we leave it open and close at the end of the day?

We will plan on using a gate guard at Feature BG01. I will discuss the feasibility of keeping the livestock away from the project site during construction with the landowner.

7. Can you please make it known what training, if any, is required with SHEAP plan.

SHEAP Section B. PART 48 TRAINING REQUIREMENTS Each CONTRACTOR employee shall receive orientation training, provided by the CONTRACTOR, comprised of all aspects of the contract’s Safety, Health and Environmental Action Plan (SHEAP).

The contractor should review the SHEAP specifications with each employee prior to beginning the project. Submit the signed signature page (page 6) to the Project Manager within five (5) working days of the Notice to Proceed date.

8. If there is a visible tunnel/shaft leaving an existing hole that needs to be filled, do we do anything different to try and fill the shaft? Or do we simply fill the hole and not worry about the side tunnel/shaft?

Please see Article 36, Differing Site Conditions, of the General Conditions of the Contract.

9. If we use a remote controlled piece of equipment and do not put a person in the hole being filled, do we still need to lay the side slopes back?

All of the Features in the Bells Gap project are to be complete backfills to the ground surface.

10. For the holes that we do need to lay the side slopes back, do we have to lay all 4 sides back at a 3:1 or can we lay 1 side back and leave 3 sides vertical?

All of the Features in the Bells Gap project are to be complete backfills to the ground surface.

11. What type of compaction testing is required? If there is testing, is that something that will be provided or do we included geotechnical testing in our bid?

No compaction testing will be required. Backfill shall be compacted in lifts of one foot (1’) using multiple passes with available heavy equipment. Please see Section 2.5.1 Shaft, Stope, and Subsidence Feature Backfilling of the General Bid Specifications, 2009.

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12. What type of MSHA/OSHA mine certifications/training is required for the workers on this project?

MSHA certifications/training is not required.

Please see Article 9, Accident Prevention and Safety Measures, of the General Conditions of the Contract regarding OSHA/MSHA requirements.

13. Is this governed by MSHA or OSHA?

Please see Article 9, Accident Prevention and Safety Measures, of the General Conditions of the Contract regarding OSHA/MSHA requirements.

14. For the large holes that the specs are requiring 1’-3’ sized boulder as fill, can we use material with fines in it?

The rockfill needs to be the specified volume of 1’-3’ sized rock. If a source of material contains rock and fines the material will need to be sorted and only the rockfill as specified installed.

All terms and conditions of the Invitation For Bid other than as changed by this amendment remain the same.

Receipt and acceptance of this amendment shall be acknowledged by submitting the Revised Bid Schedule.

BELLS GAP PROJECT

REVISED (August 16, 2016) Bid Schedule Bid Schedule

PKA-17-774

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DO NOT AMEND ANY PART OF THIS BID SCHEDULE

ALL PAGES OF THIS BID SCHEDULE MUST BE RETURNED

ALL LINES ITEMS MUST BE COMPLETED

ITEM DESCRIPTION QTY UNIT UNIT PRICE AMOUNT

1.0 Mobilize/Demobilize 1 Job N/A $__________

2.0 Project Safety, Health, and Environmental Action Plan (SHEAP)

1 Job N/A $__________

3.0 Install Mine Closures (Total from page 2 of Bid Schedule)

1 Job N/A $__________

4.0 Safeguard Additional Hazardous Openings (Total from page 3 of Bid Schedule)

1 Job N/A $__________

5.0 Additional Imported Common Fill NOT Guaranteed

50 CY $________/CY $__________

6.0 Additional Machine Time NOT Guaranteed

10 HR $________/HR $__________

7.0 Additional Imported Rockfill NOT Guaranteed

10 CY $________/CY $__________

GRAND TOTAL (Enter here and on Invitation and Bid Sheet)

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ITEM 3.0 – SAFEGUARD HAZARDOUS MINE OPENINGS:

Feature

ID

Type Closure Methods Bid Amount County Funding

BG01

Subsidence

Feature Machine Backfill

Huerfano OSM

BG02

Subsidence

Feature Machine Backfill

Huerfano OSM

BG03

Subsidence

Feature Machine Backfill

Huerfano OSM

BG05

Subsidence

Feature Machine Backfill

Huerfano OSM

BG07

Subsidence

Feature Machine Backfill

Huerfano OSM

BG08a Subsidence

Feature Machine Backfill

Huerfano OSM

BG08b Subsidence

Feature Machine Backfill

Huerfano OSM

BG08c Subsidence

Feature Machine Backfill

Huerfano OSM

BG09

Subsidence

Feature Machine Backfill

Huerfano OSM

BG12

Subsidence

Feature Machine Backfill

Huerfano OSM

Safeguard Mine Openings Total – ENTER TOTAL HERE AND ON PAGE 1

OF THIS BID SCHEDULE UNDER ITEM 3.0 $____________________

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ITEM 4.0 – SAFEGUARD ADDITIONAL HAZARDOUS MINE OPENINGS, IF REQUIRED:

ID

Type

Closure Methods

Bid Amount

County

Funding

BG06

Subsidence

Feature Machine Backfill $_______________ Huerfano OSM

BG10

Subsidence

Feature Machine Backfill

Huerfano OSM

BG11

Subsidence

Feature Machine Backfill

Huerfano OSM

BG14

Subsidence

Feature Machine Backfill $_______________ Huerfano OSM

BG15

Subsidence

Feature Machine Backfill $_______________ Huerfano OSM

BG16

Subsidence

Feature Machine Backfill

Huerfano OSM

BG17

Subsidence

Feature Machine Backfill

Huerfano OSM

BG18

Subsidence

Feature Machine Backfill

Huerfano OSM

BG19

Subsidence

Feature Machine Backfill

Huerfano OSM

Safeguard Mine Openings Total – ENTER TOTAL HERE AND ON PAGE 1

OF THIS BID SCHEDULE UNDER ITEM 4.0 $___________________

Colorado Division of Reclamation, Mining, and Safety

Inactive Mine Site Field Form Brasscap Project #: 06261980 OSM Project #:

Project: Bells Gap ID: BG06 County: Huerfano

Mine Name: Gordon 1920 Project Mgr: GSC Date: February 16, 2015

Claim Name: MLS No: AMLIS No:

Quad Name: WALSENBURG NORTH Owner: FC.Owner_Name

Field Description: Exit 52 for Walsenburg. Take CO 69 North 3.88 miles to CR 521. Take CR 521 West 0.36 miles. Feature BG-

06 is located approximately 100 feet north of CR521.

Latitude: N 37 ° 40’ 35.61” UTM: 13N 513112.87 (E) 4169940 (N) Zone

Longitude: W 104 ° 51’ 04.67” Elevation: 6302.49

¼ ¼ SE ¼ SE Section: 23 Township: 27S Range: 67W

Type of Feature: Subsidence Feature Condition: Partially Collapsed Lining: Other

Excavated Dimensions: 20 x 23 Eroded Dims. 20 x 23 Construction Dims: 20 x 23

Depth of Feature: 6 Depth to Bedrock: Depth to Plug: Shape of Opening:

Surficial Material: Drainage w/ flow, ppt, pH, etc: NONE

Existing Access Deterrents: Access Required? Unknown Good equipment access? Yes

Possible Bat Habitat? No

Adjacent land Use: Mine dump volume & impacts: 0 cuyds

Preferred Closure Method: Backfill Alternative Closure Methods:

Structures: NONE Equipment & Debris I Conditions I Types:

Work Description: Pull back top soil and set aside to cover backfill. Supply and Install common fill. Install top soil. Revegetage.

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