Amendment #1 Little Bertha Project.pdf
PDF 750 KB Posted
- Attached to
- FY 2018, PKAA, Little Bertha Project
- Solicitation number
- DQ1 PKAA 2017001511 5
- Issued by
- Kit Carson County, Denver City, Colorado
About this file
This is Amendment No. 1 to a bid solicitation (2017-1511) issued by the Colorado Division of Reclamation, Mining & Safety for the Little Bertha Project, an inactive mine site closure project located in Lake County near Leadville. The amendment provides clarifications and modifications to the original bid documents following a pre-bid meeting, affecting multiple closure features at the site. The project involves closure work on ten mine features, primarily shafts and one adit, utilizing various closure methods including polyurethane foam, rockfill, corrugated steel pipe, and backfill. The revised bid schedule requires contractors to submit pricing for mobilization/demobilization, a Safety, Health & Environmental Action Plan, and installation of mine closures across Features 106, 112, 122, 126, 127, 128, 130, 131, 133, and 147. The bid submission deadline is 4:00 p.m. on Wednesday, July 5, 2017, with bids to be submitted electronically through Colorado VSS or by mail/fax to Teresa Ryan at the Division of Reclamation, Mining and Safety. Contractors were required to acknowledge receipt and acceptance of the amendment on their bid forms.
The amendment revises specifications for Features 112, 122, 131, and 147, modifying excavation depths, corrugated steel pipe installation configurations, backfill material requirements, and drainage provisions. Feature 133, which was not visited during the pre-bid meeting, is included with a field form documenting its characteristics as a partially collapsed shaft at 10,483 feet elevation requiring backfill closure. All project work is funded through Lake County Severance Tax. The bid schedule requires contractors to complete all line items and return all pages, with provisions for additional polyurethane foam and mini-excavator rental if required. The project funding source is identified as Lake Severance Tax for all closure features.
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Other files
| File | Type | Posted |
|---|---|---|
| Little Bertha X_Y.pdf | ||
| Little Bertha Project.pdf | ||
| Attendees Little Bertha Project Pre-Bid Mtg.pdf |
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Text version
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
DATE: June 22, 2017
TO: All Bidders on the Little Bertha Project
FROM: Craig Bissonnette, Division of Reclamation, Mining & Safety
RE: Amendment No. 1 to 2017-1511
Thank you for your attendance at the Pre-Bid Meeting. The following clarifications and amendments should be noted and incorporated into the bid documents:
1. Feature 112 – Rockfill is available onsite for this closure. Excavation of up to eight (8) feet in depth may be required. All other specifications remain the same.
2. Feature 122 – The work description for this feature has been changed.
New Work Description: The corrugated steel pipe (CSP) will be installed six (6) feet into the opening with four (4) feet outside. Two (2), five (5) foot CSP sections banded together is acceptable for this closure. All other specifications remain the same.
3. Feature 131 – The closure method for this feature has been changed.
New Closure Method: Backfill, Per SWS 2 Work Description: Backfill the feature using onsite material. Large rockfill (15in plus) will be gathered onsite and placed in the opening to a depth of ten (10) feet before common fill is installed. Backfill must ensure positive drainage to the south. The historic dry-stack rock walls are not to be disturbed or used as fill material. Disturbed ground will be intensely roughened as described under Item 3.0.
4. Feature 133 – This feature was not visited. A field form has been provided with this amendment.
5. Feature 147 – Once the safety closure is installed, the existing drainage channel will be extended with a shallow swale along the north edge of the feature to ensure positive drainage away from the safety closure. Cut material shall be used as backfill. All other specifications remain the same.
6. Any trees removed around the project site will be bucked into 4’-6’ lengths and scattered.
The bid submittal for this project is no later than 4:00 p.m. on Wednesday, July 5, 2017.
Please use the REVISED Bid Schedule included with this amendment when submitting your bid.
All terms and conditions of the Documented Quote other than as changed by this amendment remain the same.
Receipt and acceptance of this amendment shall be acknowledged on the bid form and by submitting the REVISED Bid Schedule.
http://mining.state.co.us/
Return by July 5, 2017 at 4:00 P.M. to: Receipt of Addenda Nos.___________ is hereby acknowledged Submit Bids Electronically at Colorado VSS (Vendor Self Service) https://codpa-vss.hostams.com/webapp/PRDVSS1X1/AltSelfService, or Mail; Fax to:
Teresa Ryan Division of Reclamation, Mining and Safety 1313 Sherman St., #215 Denver, CO 80203 Fax (303) 832-8106
Little Bertha Project
REVISED Bid Schedule June 22, 2017
2017-1511
ITEM
DESCRIPTION
QTY
UNIT UNIT PRICE
AMOUNT
1.0 Mobilize/Demobilize 1 Job N/A $
2.0 Safety, Health & Environmental
Action Plan (SHEAP) 1 Job N/A $
3.0 Install Mine Closures
(Total from Page 2) 1 Job N/A $
4.0 Provide Add’l PUF
(if required) 5 Cubic
Yard $ $
5.0 Provide Add’l Equipment Rental
Mini-Excavator, (if required)
5 Hour $ $
GRAND TOTAL $
Contractor_____________________________________ Date_________________________
Signature _____________________________ Phone________________________________
Address ____________________________________________________________________
DO NOT AMEND ANY PART OF THIS BID SCHEDULE
ALL PAGES OF THIS BID SCHEDULE MUST BE RETURNED
ALL LINES ITEMS MUST BE COMPLETED
Page 1 of 2 Pages https://codpa-vss.hostams.com/webapp/PRDVSS1X1/AltSelfService
Little Bertha Project REVISED Bid Schedule
June 22, 2017 2017-1511
Item 3 - Install Mine Closures:
Feature
ID
Feature Type
Closure Method
Bid Amount
County
Funding
106 Shaft Polyurethane Foam (5CY) $ Lake Sev Tax
112 Shaft Rockfill (2CY) & PUF (2CY) $ Lake Sev Tax
122 Adit Corrugated Steel Pipe $ Lake Sev Tax
126 Shaft Backfill $ Lake Sev Tax
127 Shaft Polyurethane Foam (5CY) $ Lake Sev Tax
128 Shaft Backfill $ Lake Sev Tax
130 Shaft Backfill $ Lake Sev Tax
131 Shaft Backfill $ Lake Sev Tax
133 Shaft Backfill $ Lake Sev Tax
147 Shaft Polyurethane Foam (20CY) $ Lake Sev Tax
TOTAL (Enter here and on Page 1 of Bid Schedule, Item 3) $
DO NOT AMEND ANY PART OF THIS BID SCHEDULE
ALL PAGES OF THIS BID SCHEDULE MUST BE RETURNED
ALL LINES ITEMS MUST BE COMPLETED
Page 2 of 2 Pages
Colorado Division of Reclamation, Mining, and Safety
Inactive Mine Site Field Form Brasscap Project #: 2813 OSM Project #:
Project: Little Bertha ID: 133 County: Lake
Mine Name: Project Mgr: CB1 Date: October 30, 2015
Claim Name: Great Western MLS No: 374 AMLIS No:
Quad Name: LEADVILLE SOUTH Owner: Resurrection Mining Company, Harold and Catherine Phillips
Field Description: North of Xcel power station... approx. 1,500’ up cabled-off access road at beginning of small meadow. Approx.
700’ NE of #134 Latitude: N 39 ° 14’ 23.70” UTM: 13N 390258.44 (E) 4344171.45 (N)
Zone Longitude: W 106 ° 16’ 17.86” Elevation: 10483.26
¼ ¼ SW ¼ NW Section: 30 Township: 9S Range: 79W
Type of Feature: Shaft Condition: Partially Collapsed Lining: Rock
Excavated Dimensions: 4 x 6 Eroded Dims. 15 x 15 Construction Dims: 15 x 15
Depth of Feature: 12 Depth to Bedrock: 20 Depth to Plug: 12 Shape of Opening: Circular
Surficial Material: Waste rock Drainage w/ flow, ppt, pH, etc: NONE
Existing Access Deterrents: Access Required? Unknown Good equipment access? No
Possible Bat Habitat? No
Adjacent land Use: Rec & wildlife Mine dump volume & impacts: 250 cuyds
Preferred Closure Method: Backfill Alternative Closure Methods: Backfill,Backfill,Backfill
Structures: Cabin footprints in trees to West Equipment & Debris I Conditions I Types: Scattered debris near cabin remnants
Work Description: Feature appears to be actively collapsing... backfill with onsite. Small equipment access via Xcel road. Need
Xcel Consent!!
Aerial Image
24K Topo
1st Before Image
| Little Bertha - Amendment#1 |
| Little Bertha - REVISEDBidSched_6-21-17 |
| Contractor_____________________________________ Date_________________________ |
LittleBertha_133
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