SOW_Well_Abandonment.doc

STATEMENT OF WORK

Well Abandonment Warfield Air National Guard Base July 17, 2013 1.0

SCOPE

1.1 The Contractor shall provide the necessary personnel, equipment, and materials in order to satisfy all of the tasks under this contract. The contractor shall prepare all necessary reports and documentation in accordance with Maryland Department of Environmental (MDE) requirements, Comprehensive Environmental Response, Compensation and Liability Act (CERCLA), as amended, the Resource Conservation and Recovery Act (RCRA), the National Oil and Hazardous Substances Pollution Contingency Plan (NCP), the Basic Contract Statement of Work, and this Statement of Work (SOW) as outlined below.

1.2 All technical consultants for this SOW shall be supplied by the Contractor and shall be qualified to provide expert witness testimony, if required.

1.3 The scope of work contained herein will be performed under a firm fixed price contract. No project cost changes will be accepted, excluding acts of God or unforeseen circumstances, except at the discretion of the 175 wing Contract Officer.

1.4 All deliverables shall be submitted in accordance with the schedule contained in Table 2. All draft documents shall be submitted to the 175 Wing Environmental Manager (EM), and Maryland Department of Environmental, as appropriate. The Contractor shall respond to comments and, upon resolution, shall integrate as appropriate such comments into the final documents.

1.5 The Contractor shall be responsible for the characterization, treatment and disposal as needed of all investigation and remediation derived wastes (IDW/RDW) in accordance with Federal, State and local regulations.

1.6 The stages of the project under this SOW are as follows:

· Preparation of a Work Plan

· Field Work Well Abandonments

· Preparation of a Closeout Report

2.0

BACKGROUND AND LOCATION

The 175th Wing (175 WG) of the Warfield Air National Guard Base (ANGB) is on the northeastern portion of Martin State Airport in Baltimore, Maryland. Two (2) former potable groundwater drinking wells will be abandoned according to the “Maryland Draft 2013 Proposed Well Construction Regulations, .34 Well Abandonment and Sealing Standards”. The former drinking water wells were installed on base in the late 1960s and no identification tags or construction diagrams are available. The wells are 6-inch in diameter, constructed with 6-inch steel surface casing, and were measured to be approximately 120 feet deep. The depth of the surface casing in the boreholes below the ground surface is unknown. The wells have been permanently disconnected from any water supply system. A submersible pump and down-hole piping are in place in both the wells and must be removed and disposed. The two (2) former wells have steel stick up casing with bollards and guard rails that must be removed. All ground surface grades must be restored with clean fill and the vegetation restored. The wells are located in a maintained grass field with good access. The driller must supply the names and identification information for all site workers prior to the site work to arrange for site access. Work will be conducted in normal business hours during the week. Prior to conducting any fieldwork, the contractor shall meet with the 175th Wing EM to review the scope of work and ensure that all proper permits (i.e., airport dig permits, utility locates, security clearances, etc.) have been obtained to complete the well abandonment activities. The wells are accessible by vehicle and lye with in the Chesapeake Bay Critical Area.

3.0 DESCRIPTION OF TASKS

3.1 Task 1 – Work Plan. The work plan shall include required state and local well abandonment procedures for the wells and documentation for the required fieldwork.

3.1.1 Task 1A – Draft Work Plan. The Contractor shall submit a Draft Work Plan to the Base EM for concurrent review and comment. The Contractor shall provide written responses to comments received, if any, on the Draft Work Plan.

3.1.2 Task 1B – Final Work Plan. The final Work Plan shall incorporate all 175 Wing, and Maryland Department of Environment-approved comments and corrections.

3.1.3 The deliverables for Task 1 shall be submitted in accordance with Table 2 3.2 Task 2 - Well Abandonment Activities Abandonment of Wells Task 3.2.1 The wells will be abandoned in accordance with the Code of Maryland Regulations (COMAR), and Maryland Draft 2013 Proposed Well Construction Regulations, .36 Well Sealing Procedures, under supervision of a Maryland licensed well driller. A copy of the Water Well Abandonment-Sealing Report Form for each of the wells will be submitted to MDANG and the Maryland Water Management Administration by the Maryland licensed well driller. All well abandonment procedures will be conducted according to the Maryland Draft 2013 Proposed Well Construction Regulations, .36 Well Sealing Procedures, and below:

3.2.2 Preliminary Work before Sealing a Well.

3.2.2.1 The well shall be investigated to determine its present condition and the details of its construction 3.2.2.2 Determine whether there are any obstructions that will interfere with the process of filling and sealing.

3.2.2.3 If there are obstructions, they shall be removed, if possible, by cleaning the borehole (Please note that no obstructions other than a pump and piping were noted during scoping activities).

3.2.2.4 Liners shall be removed prior to sealing or an alternate sealing plan must be approved by the Approving Authority.

3.2.3 Filling and Sealing Wells.

3.2.3.1 In all hydrogeological areas of the State, the annular space of cased wells shall be sealed.

3.2.3.2 Wells in an unconfined aquifer in Hydrogeological Areas 1 and 2 shall be sealed by either of the following procedures:

3.2.3.2.1 If the well casing is not removed, fill the well with sealing material.

3.2.3.2.2 If the well casing is removed, fill the entire length of the borehole with sealing material.

3.2.3.3 All filling and sealing must be conducted according to Maryland Draft 2013 Proposed Well Construction Regulations, .36 Well Sealing Procedures 3.2.3.4 Grout the well borehole with a cement–bentonite mixture from the bottom to the ground surface with the use of a tremmie pipe

3.2.3.5 After 24 hours, each abandoned borehole must be checked for settlement and the grout topped off until settlement stabilizes.

3.3 Task 3 – Site Close Out Report: The contractor shall prepare a report (Draft & Final), including one site plan and photo documentation summarizing the well abandonment activities. The contractor shall prepare the proper well abandonment forms for submittal and sign off by the Base EM prior to submittal to the state.

3.4.1 Task 4A – Draft Site Close Out Report. The Contractor shall submit a Draft Site Close Out Report via e-mail or CD disk to the Base EM for review and comment. The Contractor shall provide written responses to comments received, if any, on the Draft Site Close Out Report.

3.4.2 Task 4B – The Final Site Close Out Report shall incorporate all 175 Wing, approved comments and corrections.

3.4.3 The Contractor shall provide a copy of the final documents on compact disc (CD-ROM) in a read-only single interactive Adobe Acrobat Exchange PDF file format. All drawings shall be in a portable format that does not use reference or call files. Each electronic copy of each drawing shall be a stand-alone drawing.

4.0 ADDITIONAL REQUIREMENTS

4.1 The Contractor shall meet deliverables’ suspense dates established and approved by the

175 WG Contracting in the project Baseline schedule.

4.2 All sheets and covers of draft documents shall be overprinted with the word “Draft,” “Draft Final,” or “Final,” as appropriate, in the upper right hand corner margin of each page.

4.3 The original copies of the final documents shall become the property of 175 Wing.

4.4 Disagreement by the Contractor with any review comments shall be brought to the Immediate attention of the 175 Wing EMO, within 5 working days of receipt of comments. The disagreement shall be communicated via telephone and later followed up in the form of written rebuttal if the call does not resolve the issue.

4.5 All reports and deliverables shall be submitted in accordance with ANG guidance.

5.0 SCHEDULE

The Contractor shall submit to the 175 WG Contracting and 175 Environmental Office a schedule for performing the work. The Contracting Officer and the Environmental Manager shall be notified by e-mail, facsimile, or telephone of any schedule change within one day of its identification.

6.0 LIST OF CONTACTS

LtCol Peter Loebach, Environmental Manger Office: 410-918-6486

Cell: 443-992-8303

Mr Abel Folarin, State Environmental Specialist Office: 410-918-6062