U.S. ARMY CORPS OF ENGINEERS, 502 EIGHTH STREET, HUNTINGTON, WV 25701-2070

C -- PERFORM RISK-BASED ENGINEERING RELIABILITY ANALYSIS OF BLUESTONE DAM LOCATED IN HINTON, WV POC Contact Point, Sandra M. King, (304)529-5182, Contracting Officer, LENORA L. SUTPHIN, (304)529-5620 CONTRACT INFORMATION: A-E services are required to perform a risk-based engineering reliability analysis of Bluestone Dam located in Hinton, WV. This announcement is open to all businesses regardless of size. A firm-fixed price contract will be negotiated. The contract is anticipated to be awarded in August 1995 and work completed within 180 days. 2. PROJECT INFORMATION: Purpose of this risk-based engineering reliability analysis is to determine the reliability of the existing (unimproved) dam and of the three alternative corrective measures for upgrading the dam to accommodate the Probable Maximum Flood (PMF). The three remedial options under consideration are as follows: a. Raising the dam to contain the PMF, restricting floor releases to the existing spillway; b. Raising only the dam abutment monoliths, allowing the PMF to overtop the remainder of the dam; and c. Constructing an auxiliary spillway over the penstock monoliths to pass the PMF without overtopping the existing dam. Each of these corrective measures employs tensioned anchors and downstream thrust blocks to upgrade the stability of the dam to the current COE design criteria. 3. SELECTION CRITERIA: See Note 24 for general selection process. The selection criteria are listed below in descending order of importance. (a) Professional Qualifications: 1) Expertise in Structural and Geotechnical Engineering, 2) Working knowledge of Statistical Analyses; (b) Specialized Experience and Technical Competence: 1) Knowledge of Risk-Based Engineering Reliability concepts as applied to gravity structures per the guidance presented in the Corps of Engineers' Engineer Technical Letters ETL 1110-2-532 and ETL 1110-2-321, 2) Knowledge of the Corps of Engineers' Dam Safety Assurance Program as prescribed by the Corps of Engineers' Engineer Regulation (ER) 1110-2-1155, 3) Experience in gravity dam design per the guidance contained in the Corps of Engineers' Engineer Manual (EM) 1110-2-2200, 4) Knowledge of gravity dam features and operating procedures, 5) Expertise in developing probability event trees for modeling possible dam responses to various flood levels, 6) Knowledge of the ''Monte Carlo'' simulation process; (c) Knowledge of the Locality: Familiarity with the geological characteristics in southern West Virginia; (d) Capacity to Accomplish Work; (e) Geographic Proximity. 4. SUBMISSION REQUIREMENTS: See Note 24 for general submission requirements. Interested firms having the capabilities to perform this work must submit two copies of SF 255 (11/92 edition), and two copies of SF 254 (11/92 edition) for the prime firm and all consultants, to the above address not later than the close of business on the 30th day after the date of this announcement. If the 30th day is a Saturday, Sunday, or Federal holiday, the deadline is the close of business of the next business day. Include the firm's ACASS number in SF 255, Block 3b. Solicitation packages are not provided. This is not a request for proposal. (0206)

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