ADDENDUM NO 2 ARFQ DEP26-92 AML MILLER MINE DRAINAGE PHASE II.pdf
PDF 12 MB Posted
- Attached to
- AML - Miller Mine Drainage Phase II
- Solicitation number
- ARFQ 0313 DEP2600000092 3
- Issued by
- West Virginia
About this file
This is Addendum No. 2 to an Agency Request for Quotation (ARFQ DEP26-92) issued by the West Virginia Department of Environmental Protection for the AML Miller Mine Drainage Phase II project. The addendum was issued to publish vendor questions and answers from the pre-bid conference held on-site on July 9, 2026, and to distribute the Pre-Bid Conference Checklist that was omitted from Addendum No. 1. Key project dates include a vendor questions deadline of July 23, 2026, and a bid opening date of August 6, 2026. The project involves mine drainage collection system construction with multiple line items including site preparation, erosion control measures, composite filter sock installation (270 linear feet of 32-inch composite filter sock or alternative triple-stacked 24-inch composite filter sock), erosion control blankets for regraded slopes, and Class A riprap drainage blankets (2,756 tons). The engineer's estimate was revised to $1,519,181.32.
The addendum provides critical clarifications and modifications to project specifications and requirements. Notable approvals include permission for onsite burning east of the powerline right-of-way if applicable permits are obtained, confirmation that B&O tax at 2% applies only to work performed within Clarksburg city limits (parcels 9 and 11), and approval of specific alternative materials including triple-stacked 24-inch composite filter sock and limestone riprap with calcium carbonate equivalency for drainage blankets. Timber mats must meet the specified 16'x4'x1' dimensions to secure the mat skirt. Bonded fiber matrix for erosion control blankets requires documentation of equivalency to the proposed standard. Contractors are instructed to reference cross-sections and detail sheets for proper placement of collection system components and drainage blankets.
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Text version
AGENCY SOLICITATION NUMBER – ARFQ ______________
Addendum Number: ____
The Purpose of this addendum is to modify the solicitation identified as (“Agency Solicitation”) to reflect the change(s) identified and described below.
Applicable Addendum Category:
[ ] Modify bid opening date and time
[ ] Modify specification of product or service being sought
[ ] Attachment of vendor questions and responses
[ ] Attachment of pre-bid sign-in sheet
[ ] Correction of error
[ ] Other
Description of Modification to Solicitation:
This Addendum issued to publish and distribute the attached documentation to the vendor community.
Additional Documentation: Documentation related to this Addendum (if any) has been included herewith as Attachment A and is specifically incorporated herein by reference.
Terms and Conditions:
1. All provision of the Agency Solicitation and other addenda not modified herein shall remain in full force and effect.
2. Vendor should acknowledge receipt of all addenda issued for this Agency Solicitation by completing an Addendum Acknowledgement, a copy of which is included herewith. Failure to acknowledge addenda may result in bid disqualification. The addendum acknowledgement should be submitted with the bid to expedite document processing.
DEP2600000092
1. To publish vendor questions and answers
2. To publish Pre-Bid Conference Checklist that was omitted on Addendum No 1
Note: Dates and engineer estimate from Checklist were updated on Addendum No 1
Addendum #2 Miller Mine Drainage Phase II
ARFQ DEP 0313 DEP2600000092
The following are questions that were identified after the Pre-Bid Conference (PBC) conducted on-site on July 9th, 2026, Project Clarifications, Project Notes, Project changes, Technical Specification Changes, and Project Plan Changes. The answers and clarifications provided herein take precedence over verbal answers at the PBC and previously provided specifications and descriptions provided in the Solicitation should there be any conflicts between the two.
QUESTIONS AND ANSWERS
Q1. In reference to site preparation, can we burn on this site?
A1. The contractor shall be permitted to burn onsite if they obtain all the applicable permits and complete burning operations east of the powerline Right of Way boundary.
Q2. Will Clarksburg B&O tax be required for portion of the project with the city and if so can you provide the tax rate?
A2. Yes, B&O tax will be required. The tax rate shall be 2% but will only applied to the portion of the work performed within the City of Clarksburg limits which are parcels 9 and 11.
Q3. In reference to temporary work pad would composite mats or 16’x4’x8” wood mats be acceptable alternatives to the 16’x4’x1’ wood mats per 4.2.22.4 of the specifications?
A3. No, composite mats or 16’x4’x8” wood mats will not be acceptable. The proposed thickness of the timber mats is needed to secure the timber mat skirt.
Q4. In reference to the 32” composite filter sock with a plan quantity of 270 LF, would super silt chain-link / fabric fence or stack smaller diameter sock be accepted option?
Considering the small quantity, it will be difficult to have someone mobilize to field fill 32” sock.
A4. The contractor shall be permitted to triple stack 24-inch composite filter sock in lieu of a single stack of 32-inch composite filter sock. Payment for the triple stack 24-inch will be in lieu of a single stack of 32-inch composite filter sock, and will only be applied for the 270 LF of construction item 5.3
Q5. Can we use hydraulically applied bonded fiber matrix (BFM) for portions of line item
17 Erosion Control Blanket for the regraded slopes? Rolled erosion control blankets would still be used vegetated lined channels.
A5. If the contractor can provide documentation that bonded fiber matrix (BFM) is equivalent or better to the proposed erosion control blanket for the regraded slopes then a substitution would be permitted.
Q6. Please confirm Line Item 30 Class A RipRap Drainage blanket with a quantity of
2,756.00 tons is non-calcareous it is call out as non-calcareous in the specifications
7.2.11.1 but not noted on the detail sheet 9 of the plans.
A6. Limestone (calcareous) with calcium carbonate equivalency will be accepted for this item. Class A riprap for the drainage blankets shall follow specification 7.2.3 gradation requirements.
ATTACHMENT A
Addendum #2 Miller Mine Drainage Phase II
ARFQ DEP 0313 DEP2600000092-1
Q7. How far back towards the hill should the collection system begin?
A7. The depth into the hillside varies. Please reference the cross sections on Sheet 9, 9A, and
9B for depths at designated locations.
Q8. Is there a specific area where line item #30 should be used?
A8. Line item #30 is the Class A RipRap Drainage Blanket. This item will be used as part of the collection system section. Please reference the detail on Sheet 9 and cross sections on Sheet 9, 9A, and 9B for proposed placement.
REVISED SPECIFICATIONS
N/A
REVISED DRAWINGS
CLARIFICATIONS, NOTES, AND CHANGES
REVISED BID SCHEDULE (Submitted separately)
PRE-BID SIGN IN SHEETS
* (See note at bottom)
** (See note at bottom)
***(See note at bottom)
* 3. The Vendor Questions Deadline was changed from July 16, 2026 to July 23, 2026 on Addendum No 1 ** 4. The Bid Opening Date was changed from July 23, 2026 to Aug 6, 2026 on Addendum No 1.
*** Engineer's Estimate was changed from $1,516,272.57 to $1,519,181.32 on Addendum No 1.
NOTES
File details come from the government source that posted it. Updated .