MODIFICATION
A -- ME Receptor Model Development Revision 1
- Notice Date
- 3/10/2004
- Notice Type
- Modification
- Contracting Office
- Environmental Protection Agency, Ord Service Center/Nheerl, Rtp Procurement Operations Division, Research Triangle Park, NC 27711
- ZIP Code
- 27711
- Solicitation Number
- RFQ-RT-04-00125
- Response Due
- 3/17/2004
- Archive Date
- 4/17/2004
- Point of Contact
- Point of Contact, Ardra Morgan-Kelly, Purchasing Agent, Phone (919) 541-3670
- E-Mail Address
-
U.S. Environmental Protection Agency
(morgan.ardra@epa.gov)
- Description
- NAICS Code: 541511 NAICS CODE: 541511 THE STATEMENT OF WORK HAS BEEN AMENDED. THIS IS A COMBINED SYNOPSIS/SOLICITATION FOR COMMERCIAL SERVICES PREPARED IN ACCORDANCE WITH THE FORMAT IN FAR SUBPART 12.6 AS SUPPLEMENTED WITH ADDITIONAL INFORMATION INCLUDED IN THIS NOTICE. THIS ANNOUNCEMENT CONSTITUTES THE ONLY SOLICITATION. QUOTES ARE BEING REQUESTED AND A WRITTEN SOLICITATION WILL NOT BE ISSUED. The associated North Industry Classification System (NAICS) is 541511 and the business size standard is $21.0 million. Full and open competitive procedures will be unutilized. A firm, fixed price purchase order using Simplified Acquisition Procedures is anticipated to result from the award of this solicitation. This procurement is for ME Receptor Model Development. STATEMENT OF WORK: BACKGROUND The Positive Matrix Factorization (PMF) receptor model is a multivariate receptor model that uses both measured concentrations and uncertainty estimates to generate both particulate matter (PM) source profiles and source contribution estimates. The PMF receptor model uses a least squares approach to perform the factor analysis and incorporates non-negativity constraints (Paatero, 1997). The PMF receptor model is implemented as either PMF2 or PMF3 based on the structure of the data with PMF2 used for a single sampling site, and PMF3 used for multiple sampling sites. The Multilinear Engine (ME) receptor model was also developed by Paatero (1999), which uses a more flexible algorithm and a script language similar to Fortran or C. PMF can be implemented through ME, and ME allows for the incorporation of source profile constraints and the use of supplementary variables such as weekday/weekend and wind direction (Paatero, 2002). The ability to incorporate additional supplementary information and the flexibility of the ME program has allowed it to be used for the evaluation of both ambient and personal exposure data (Hopke et al., 2003). ME is currently available as an executable from Pentti Paatero at the University of Helsinki for a lifetime single user fee. The ME model currently does not calculate uncertainty estimates for the source profiles, source contributions, or the supplementary variables. The lack of uncertainty estimates limits the use of this powerful model for receptor modeling by State and Local Air Pollution Agencies to support State Implementation Plans for Particulate Matter. SCOPE The contractor shall develop a Quality Assurance Project Plan (QAPP) for the ME model development. The contractor shall provide a stand-alone executable of PMF2 implemented through the ME receptor modeling program described in Paatero et al. 1999, which can be distributed by EPA at no charge to the user. This version of the program will be registered to the U.S. Environmental Protection Agency. The executable will allow transfer of sampling concentration, sample uncertainty, and supplementary data (for examples wind speed, season or weekend/weekday) to the program and will output model diagnostics, source profiles, sample source contribution estimates, and factor coefficients. In addition, the contractor shall develop algorithms to estimate the uncertainty of the source profiles, sample source contribution estimates, and factor coefficients. The contractor shall prepare a document that describes the method used to calculate the uncertainties. The contractor shall add the uncertainty algorithm to the executable. TASKS TO BE COMPLETED Task 1. Provide a Quality Assurance Project Plan (QAPP) for the ME model development The contractor shall provide to the EPA a report describing the ME model development quality assurance procedures (see Guidance for Quality Assurance Project Plans for Modeling EPA QA/G-5M, EPA/240/R-02/007, Dec 2002; http://www.epa.gov/quality/qs-docs/g5m-final.pdf): a) describe and provide references for theories/techniques/methodologies that will be used. b) assess whether available algorithms, and other information to be used in Tasks 2 - 4 are adequate and sufficiently complete to develop the pre- and post processing diagnostics and algorithms, ME executable, and ME uncertainty estimates. c) define the criteria for assessing the quality and reliability of the algorithms and of the model that is being developed and applied (availability and results of quality assurance/quality control (QA/QC) data, etc.); d) report the results from the information quality and reliability assessments, and; e) assess and ensure that the model, and model results are accurate and complete, including a QA evaluation of the process and products. Task 2: ME ExecutableThe contractor shall develop a stand-alone version of PMF2 implemented through the ME model described by Paatero (1999). The contractor shall provide an executable that can input and output selected variables. The input variables shall at least include total mass (i.e. PM2.5), species concentrations, species uncertainties, three supplementary variables or factors (for examples weekday/weekend, season, wind direction), and other required model parameters such as the matrix dimensions, number of factors, robust/non-robust, stabilizer, positive/negative outlier distance, and missing data limit. The option for use of 0, 1, 2, or 3 supplementary variables shall be allowed by the executable. Output variables shall at least include source profile, sample source contributions, factor coefficient estimates, scaled residuals, and model diagnostics (minimally including the number of iterations and Q). Task 3: ME Uncertainty Estimates The contractor shall develop algorithms to estimate the uncertainty in the source profiles, individual sample source contribution estimates, factor coefficients, and average source contribution estimates. The contractor shall document the algorithms in a format suitable for submission to Chemometrics and Intelligent Laboratory Systems (15 pages). The contractor shall add the uncertainty algorithms to the Task 2 executable and provide a revised ME executable. Output variables in the revised ME executable shall at least include source profile and uncertainties, sample source contribution and uncertainties, factor coefficient estimates and uncertainties, scaled residuals, and model diagnostics (minimally including the number of iterations and Q). DELIVERABLES Task 1. Provide a Quality Assurance Project Plan (QAPP) for the ME model development Provide a QAPP (Microsoft Word format) describing the ME model development quality assurance procedures. Deliverable date: 45 days after the start of the performance period. Task 2: ME Executable Provide two ME executables, one for the PMF2 model and a second for the expanded PMF model. Also provide a report (Microsoft Word format) describing the ME executables (inputs, outputs, and diagnostics) based on an example data set. Deliverable dates: 6 months after the start of the performance period for the ME executable for the PMF2 model, 12 months after the start of the performance period for the ME xecutable for the expanded PMF model, and 14 months after the start of the performance period for the report describing both of the ME executables. Task 3: ME Uncertainty Estimates Provide document (Microsoft Word format) describing uncertainty algorithms. Add the uncertainty algorithms to the Task 3 executable and provide the executable. Deliverable date: 18 months after the start of the performance period. SELECTION CRITERIA: The EPA will select a vendor based upon both cost and technical factors so that the Agency receives the best value for this purchase where Technical and Past Performance are of greater importance than Price. Selection will be based on the following criteria: Knowledge of the algorithms employed in the software tools Positive Matrix Factorization 2 (PMF2) and the Multi-Linear Engine 2 (ME2) and experience in programming with the ME script language. Demonstrated development and application of the ME receptor model described in Paatero (1999) to determine and quantify the sources of PM using innovative approaches (i.e. supplementary variables such as weekend/weekday). Demonstrated development and application of algorithms for quantifying the uncertainty in PMF2 and ME2 solutions. Past performance contact information regarding 3 efforts (contracts, task orders, purchase order etc.) of similar complexity and size performed within the last 3 years. The following FAR provisions shall apply to the solicitation: 52.203-6 Restriction on Subcontractor Sales to the Government, 52.219-8 Utilization of Small Business Concerns , 52.204-6 Data Universal Numbering System, 52.204-7 Central Contractor Registration, 52.212-1, Instructions to Offerors -- Commercial Items. All offerors are to include with their offer a completed copy of provision 52.212-3, Offeror Representations and Certifications--Commercial Items. The following FAR clauses apply to the acquisition: 52.212-4, Contract Terms and Conditions--Commercial Items. The following additional FAR clauses which are cited in Clause 52.212-5 are applicable to this acquisition: 52.222-21, Prohibition of Segregated Facilities ; 52.222-26, Equal Opportunity, 52.222-35, Affirmative Action for Special Disabled and Vietnam Era Veterans; 52.222-36 Disabled Veterans and Veterans of the Vietnam Era; 52.222-19, Child Labor-Cooperation with Authorities and Remedies; 52.222-51, Buy American Act--Balance of Payments Program; 52.232-34, Payment of Electronic Funds Transfer. COMMERCIAL BUY CLAUSES AND FORMS are provided for your convenience at EPA's website: http://www.epa.gov/oam/rtp-cmd. Please submit to Ardra Morgan-Kelly, @ (919) 541-4273(fax) or email: morgan-kelly.ardra@epa.gov phone:(919) 541-3670. All offers are due by Mar 17, 2004 1:00pm, EST. Vendor must include a technical proposal and cost proposal. The cost proposal shall include a price per task.
- Web Link
-
Link to FedBizOpps document.
(http://www.eps.gov/spg/EPA/OAM/CMD/RFQ-RT-04-00125/listing.html)
- Record
- SN00542021-F 20040312/040310232506 (fbodaily.com)
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