Dismal Road Landslide Engineering Scope of Services.docx

DISMAL ROAD LANDSLIDE ENGINEERING PROJECT

SCOPE OF SERVICES:

The selected A/E shall furnish all expertise, labor and resources for complete design and construction period services for the Dismal Road Landslide Project. The project site is located at 14846 Dismal River Road, Pilgrims Knob, Virginia, 24634. Project area mapping comprises a section of the Keen Mountain USGS 7.5 Min. Quadrangle Map. Coordinates for the project location are 82°54’35.5” W, 37°14’38.35” N.

The goal of the project is to remove the failing wall, construct a stabilization feature, and drainage improvements located behind the residence.

The work to be performed consists of drainage improvements, stabilization of existing slope and slide area, construction of a stabilization feature and diversion ditches and installation of pipes. All disturbed areas will be seeded with species from the approved non-invasive plant list and the driveway paved.

Reclamation designs proposed for this project may include (but not limited to) the following phases and tasks. Additionally, the required deadline is given for each Phase where a Work Product is to be delivered to Virginia Energy.

Phase 1 – Data Collection, Site Evaluation and Conceptual Design - (45 Days)

· Site investigations, mapping and surveying (orthographic, topographic and control surveys).

· Geotechnical investigations (as needed)

· Evaluation of methods for correction and stabilization of slope failure (landslide) and drainage

· Evaluation of existing retaining wall

· Identification and mapping of known and potential mine portal closure locations

· Work Product: Preliminary Engineering Report to Virginia Energy with Recommended Conceptual Design

Phase 2 – Preliminary Design (Preliminary Plans and Specifications) – (30 days)

· Identification of unsuitable soils to be removed and disposed on-site

· Identification of disposal site

· Design of site access

· Design of temporary protection measures (safety fence, etc.)

· Design of erosion and sediment control and storm water management

· Design of slope stabilization construction, diversion ditch, and stabilization feature

· Calculation of material quantities and preliminary construction cost estimate

· Revegetation plan

· Work Product: Preliminary Plans and Specifications / Engineering Report to Virginia Energy

Phase 3 – Final Design (Final Plans and Specifications) – (10 Days)

· Work Product: Final Plans and Specifications to Virginia Energy incorporating changes from Preliminary Design Phase.

Phase 4 – Inspection Services

· The A/E will provide construction inspection services as required for this project. It is anticipated that approximately five trips to the field will be needed to provide these services. Virginia Energy requires the A/E to perform inspections at critical phases of the project (as determined by the A/E) and as requested by Virginia Energy. Inspections requested by Virginia Energy should be performed within 48 hours of notification of such request made to the A/E. The A/E should provide a report to Virginia Energy within 48 hours of completion of each site inspection.

The following generally highlights the services that the A/E will be required to perform:

A. Provide an Engineering Report and complete construction contract documents with professional seals and signatures in accordance with procedures of the A/E Manual. Construction contract forms provided by the Agency shall be used. Documents must be complete and ready for bidding not later than 85 days after notification to proceed. Plans and specifications shall be in detail, including but not limited to plan views, cross sections, maps, and detail drawings. A bid schedule must be prepared for the project. The Contractor shall include or address all items described in the scope of work.

B. Provide construction administration services including, but not limited to, requests by the Agency for clarifications and/or interpretations; review and/or evaluation of any substitutions or shop drawings.

C. Prepare a concept design to discuss with the Agency prior to submission of a draft plan. The Contractor shall work closely with the Agency during the design process and keep the Agency advised of alternatives so as not to develop plans that are not suitable for the Agency. General objectives, concerns and program parameters shall be reviewed when the contractor provides the initial concept design. The concept design shall be of sufficient detail so that the Agency may be able to discuss the proposed concept with the affected property owner(s) in order to obtain construction rights of entry.

1. A safety conditions and ground control plan (red Zone) for construction;

2. Identify a suitable disposal site for any material if needed;

3. Clearing the site of trees and debris within the construction limits of the project;

4. Surface drainage plan to control and promote proper drainage;

5. Excavation of slide material to a stable configuration and disposal of material in an approved suitable disposal site.

6. Asphalt to resurface public road or driveway of residence if disturbed by construction;

7. A revegetation plan for all disturbed areas (must use species listed on the March 2005 DMLR Revegetation Species List);

8. Show on the drawings , design and details for the reconstructed drainage channel;

9. Show on the drawings, adequate erosion and sediment control and storm water management measures for all land disturbance associated with the project;

10. Include a minimum reference to ASTM or AASHTO. State a minimum material specification. Nationally accepted standards are to be referenced when it is necessary to use an existing standard to describe the material to be used or work performed during construction; and

11. Identify and describe procedures for surface and subsurface utilities including electric, telephone, cables, guide wires and drainage, water, sewer, culverts and bridge structures, buildings or other structures.

J. Perform all field surveying and develop any additional necessary mapping to relate to existing USGS Datum and Benchmarks or established project monuments. Construction plans which require horizontal and/or vertical control to establish baselines and construction stake-out shall have sufficient references in the field and on the drawings to allow the construction contractor to perform the necessary surveying and staking without leaving the construction area. Cross sections shall be on no more than 50-foot intervals.

K. Show all areas which will be disturbed or entered by project personnel on the plans including the actual reclamation and access areas.

L. Incorporate standard specifications and drawings furnished by the Agency into the construction project design. The A/E is in no way restricted, however, from developing alternative specifications and drawings when, in his/her professional judgment, standard specifications or drawings are deemed unworkable for particular scoped tasks. The Agency shall be notified of any alternative specifications or engineering changes outside of approved design concept or this solicitation.

M. Conduct site inspections or attend meetings as directed by the Agency. The A/E’s project engineer or project manager shall be responsible for performing the inspections or attending of meetings. A minimum of five (5) inspections are anticipated. Upon completion of each inspection, the A/E shall prepare and submit a detailed inspection report.

N. All property agreements for entry to the project area will be provided by the Division of Mined Land Reclamation.

O. The Engineering Report shall provide the Agency with applicable copies of field survey notes, drill and borehole logs, stability analyses, hydraulic calculations, volume calculations and other pertinent data to the project. The material shall be clear and complete enough to allow the Agency to check the calculations and to provide reference materials if questions arise during or after construction for subjects including but not limited to areas requiring special compaction levels critical to achieving design stability, unusual or problematic soil conditions, areas of geologic instability or barriers to construction, hazardous site conditions, critical materials for which substitution is not permitted, design assumptions for construction such as buttressing, shoring, etc.

P. The drawings shall be complete with all construction notes and references. Specifications shall also be complete and site specific. The A/E shall meet in the field with the review team to discuss the plans and specifications, if required.

Q. The A/E shall provide, at minimum, the following to the Agency within the time schedule outlined in the contractor’s proposal or as negotiated in the final contract:

1. The Technical Proposal in electronic format.

2. The Conceptual Design in electronic format.

3. The Draft Construction Plans and Specifications in electronic format.

4. PDF of the Final Engineering Report.

5. One set of drawings in AutoCAD format.

6. One set of PDF drawings.

7. One copy of specifications in Word format.

8. Submit PDF of the entire bid package for posting on eVA.

R. The Agency will provide the A/E comments from State and Federal agencies in the project grant application. The Contractor will provide designs and specifications that are in compliance with the directives and/or constraints of those comments.

S. The A/E shall submit a concept plan within 45 days and a draft plan within 75 days after issuance of the Notice to Proceed unless otherwise allowed by the Agency. Delays in the Agency response which occur while awaiting consulting agencies response or due to unforeseen circumstances or circumstances beyond the control of the Agency shall result in an adjustment of the A/E’s schedule by the number of days delayed. The A/E shall then make the necessary changes and finalize the plan within 10 days unless otherwise allowed by the Agency.

T. The A/E shall attend the pre-bid conference to discuss the project design and bid items. The A/E shall respond to questions and prepare any addenda that may be required. This shall involve preparation of drawings and specifications required to clarify last minute changes in site conditions and/or questions that are raised during or following the pre-bid conference and until the bid closing date.