MODIFICATION
A -- DRAFT STATEMENT OF WORK AND PRESOLICITATION CONFERENCE FOR REQUEST FORPROPOSAL NUMBER NNG12393693R
- Notice Date
- 9/23/2011
- Notice Type
- Modification/Amendment
- NAICS
- 541712
— Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)
- Contracting Office
- NASA/Goddard Space Flight Center, Code 210.Y, Greenbelt, MD 20771
- ZIP Code
- 20771
- Solicitation Number
- NNG12393693R
- Response Due
- 10/21/2011
- Archive Date
- 9/23/2012
- Point of Contact
- Lisa A Mullen, Contract Specialist, Phone 301-286-0503, Fax 301-286-0383, Email Lisa.A.Mullen@nasa.gov - Lynne Hoppel, Contracting Officer, Phone 301-286-3035, Fax 301-286-0268, Email Lynne.C.Hoppel.1@gsfc.nasa.gov
- E-Mail Address
-
Lisa A Mullen
(Lisa.A.Mullen@nasa.gov)
- Small Business Set-Aside
- N/A
- Description
- This is a modification to the synopsis entitled DRAFT STATEMENT OF WORK ANDPRESOLICITATION CONFERENCE FOR REQUEST FOR PROPOSAL NUMBER NNG12393693R which was postedon August 3, 2011. You are notified that the following changes are made: The purpose of this notice is to publish a revised Draft Statement of Work datedSeptember 14, 2011, establish a revised date for a Pre-Solicitation Conference and changethe main point of contact for this procurement. NASA has concluded that it will be morebeneficial to hold the Pre-Solicitation Conference AFTER the release of the Draft RFPwhich is currently planned for late October. The Pre-Solicitation Conference will be heldon November 10, 2011 at 10:00 a.m. (NASA-Goddard Space Flight Center-Greenbelt, MD). Thebuilding number and conference room will be provided upon registration. Prior to October21, 2011, all conference attendees are requested to register. Please send yourregistration via e-mail to Lisa.A.Mullen@nasa.gov. Your registration must include namesand e-mail addresses of attendees along with company name. NOTE: All conferenceattendees must be U.S. CITIZENS.SEE REVISED DRAFT STATEMENT OF WORK BELOW:DRAFT STATEMENT OF WORK- RFP NO.NNG12393693R:Ocean Ecology Branch Statement of WorkThe Ocean Ecology Branch (OEB) at Goddard Space Flight Center (GSFC) is a world leader insatellite remote sensing of ocean biology and biogeochemistry, and engages in fundamentalresearch in marine biogeochemistry and ocean ecosystem dynamics. The OEB is home to theOcean Biology Processing Group (OBPG), which is responsible for the calibration,validation, software development, data processing, and distribution for ocean colorproducts from a variety of spaceborne radiometers, including NASAs Moderate ResolutionImaging Spectroradiometer (MODIS) currently operating on the Terra and Aqua spacecraft,legacy sensors such as the Sea-viewing Wide-Field-of-view Sensor (SeaWiFS) and theCoastal Zone Color Scanner (CZCS), and international missions such as Europes MediumResolution Imaging Spectroradiometer (MERIS), Japans Ocean Color and Temperature Scanner(OCTS), and Indias Ocean Color Monitor 2 (OCM2). A primary goal of the OEB is to producea long term, continuous climate data record of ocean biological and biogeochemicalproducts from satellite ocean color measurements spanning multiple missions, whichrequires continuous monitoring and improvement of instrument calibration and processingalgorithms, as well as a rigorous validation and quality assessment effort. The OEBtypically performs a reprocessing of all ocean color missions every two years, toincorporate improvements in instrument characterization knowledge or processingalgorithms, or to incorporate new derived products into the distribution. The processing capabilities of the OEB are also leveraged to support Sea SurfaceTemperature (SST) production from MODIS, evaluation of ocean color products from theVisible and Infrared Imager Radiometer Suite (VIIRS) that is soon to be launched on theNational Polar Orbiting Environmental Satellite (NPOES) Preparatory Project (NPP), andproduction and distribution of Sea Surface Salinity (SSS) and Wind Speed products fromAquarius. After launch and the successful commissioning of the Aquarius instrument,Aquarius Project Management will transition from JPL to GSFC, and OEB staff will beresponsible for the ground processing system, data distribution, and instrumentscheduling and telemetry monitoring and anomaly detection for Aquarius. For NPP, the OEBis home to the Product Evaluation and Analysis Tools Element (PEATE) for oceans. The OEBis also actively engaged in new instrument and new mission development, which currentlyincludes leading the preliminary science and sensor requirements development for theocean color capabilities of the Aerosol Clouds and Ecosystems (ACE) and the GeostationaryCoastal and Air Pollution Events (GEO-CAPE) missions identified in the 2007 NRC DecadalSurvey for Earth Science (http://decadal.gsfc.nasa.gov/missions.html), as well as thePre-ACE (PACE) data continuity mission recently announced by NASA. The OEB furtherparticipates in oceanographic field data collection and analysis to support thecalibration, validation, and algorithm development for current and future satellite oceancolor missions, and to support fundamental research in ocean ecosystem dynamics andbiogeochemical processes. Much of the work performed within the OEB is detailed on theOcean Color Web (OCW) at http://oceancolor.gsfc.nasa.gov/ and the OEB Research website athttp://neptune.gsfc.nasa.gov/osb/. The work within the OEB is funded through multiple flight projects and NASA researchawards (e.g., Research Opportunities in Space and Earth Sciences, ROSES). Both theflight project support and research efforts associated with the OEB are lead by a smallgroup of NASA scientists (within the branch or related organizations at GSFC), with mostof the work currently and historically performed by on-site Contract staff. Contractstaff are also relied upon to lead or substantially contribute to proposals for new andfollow-on funding sources (e.g., responses to ROSES announcements). The scope of work tobe performed by the Contractor team spans the following functional areas: 1.Satellite Sensor Radiometric Calibration. The Contractor shall performradiometric calibration analyses of ocean color sensors, including prelaunch sensorcalibration and characterization (e.g., laboratory test design and configuration,assessment of response versus scan angle, polarization sensitivity, temperaturesensitivity, stray-light contamination, and spectral response), on-orbit calibration(e.g., solar and lunar-based calibration and maintenance and application of the RoboticLunar Observatory model) and assessment of sensor radiometric stability over time. TheContractor shall perform routine monitoring and maintenance of instrument radiometricperformance for currently operating sensors (e.g., MODIS), as well as periodicreassessment of instrument radiometric characterization over the full mission lifespanprior to reprocessing of any operational or legacy ocean color mission. The Contractorshall further develop and implement additional calibration methods and techniques asneeded to augment the prelaunch and on-board calibration capabilities (e.g.,cross-calibration between satellite sensors, vicarious calibration between satellitesensors and ground-based targets). This work will include interfacing with externalsensor calibration teams (e.g., the MODIS Calibration Support Team, MCST), with the goalbeing to monitor and mitigate the impact of calibration changes and sensor degradation onocean color products. The Contractor shall also develop radiometric requirements andprelaunch test plans to support new satellite sensors (e.g., for an advanced ocean colorsensor for the PACE mission).2.Scientific Software and Algorithm Development. The Contractor shall develop andimplement processing algorithms and software to produce ocean color, SST, SSS and WindSpeed products from remote sensing instruments, including development, maintenance, andconfiguration management of the scientific software to process satellite radiometricobservations from observed counts to calibrated, global geophysical products. Theprocessing algorithms may be provided in the form of Algorithm Theoretical BasisDocuments (ATBDs) or prototype code from Science Team members or the research community,or developed by the Contractor or other OEB staff. In the case of Aquarius, the primarygeophysical product algorithm developer is the Aquarius Science Team while the Level-0 toLevel-1a and Level-3 algorithms are OEB-staff developed. Similarly, the MODIS SSTalgorithm is currently the responsibility of the MODIS Science Team. For ocean colorretrieval, defined here as the spectral distribution of reflected sunlight upwelling frombeneath the ocean surface in the visible to short-wave infrared spectral regime (possiblyextending to the ultraviolet for future sensors), the OEB has primary responsibility forthe algorithms to produce this water-leaving reflectance from observed radiances, as wellas responsibility for some key bio-optical algorithms.The Contractor shall develop andmaintain atmospheric correction algorithms to remove the effects of the atmosphere fromsatellite sensor observations and retrieve the ocean color signal. This includesatmospheric radiative transfer analyses to produce and improve corrections for aerosols,air molecules, and atmospheric gases, as well as surface and subsurface effects (e.g.,bi-directional reflectance, sun glint). The Contractor shall also develop and/orimplement and evaluate bio-optical algorithms to retrieve biological or biogeochemicalwater-column constituents (e.g., chlorophyll concentration, diffuse attenuation, inherentoptical properties) from satellite ocean color retrievals. In support of new ocean colormission development (e.g., ACE/PACE, GEO-CAPE), the Contractor shall develop atmosphericcorrection and bio-optical algorithms to exploit the anticipated capabilities of theseadvanced sensor concepts (e.g., hyperspectral, geostationary).3.SeaDAS Support. The Contractor shall develop, maintain, distribute, and provideuser support for the SeaWiFS Data Analysis System (SeaDAS). SeaDAS provides the researchcommunity with a tool for display and analysis of all satellite products produced by theOEB, as well as the processing software to reproduce those products, alternativeproducts, or user-developed products from satellite radiometric observations. TheContractor shall maintain the existing capabilities of SeaDAS, ensure softwareportability with popular operating systems, incorporate new capabilities as needed tosupport new missions and changing NASA requirements, and evolve the software packagethrough new technologies and design improvements to minimize maintenance costs andenhance utility. The Contractor shall also prepare SeaDAS training materials and leadperiodic training workshops for the user community. Seehttp://oceancolor.gsfc.nasa.gov/seadas/.4.Satellite Product Validation and Quality Control. The Contractor shall provide anassessment of the quality of all standard ocean color products that NASA distributes, toinclude absolute accuracy, precision, temporal and spatial stability, andmission-to-mission continuity and consistency (where applicable). The Contractor shallperform these assessments immediately prior to any reprocessing or new productgeneration, and inform the research community as to any change in quality prior todistribution. The Contractor shall also perform quality assessments and comparativeanalyses of ocean color time-series products to assess performance of new algorithms(proposed by OEB staff or the research community) or sensor calibration changes. TheContractor shall further perform daily assessment of recently processed data (i.e., newlyproduced MODIS ocean color or SST products) to identify processing errors. Commonmethods of assessment include comparison with field data (match-ups or in situtime-series trends), product time-series anomaly analyses, and sensor-to-sensorcomparative analyses, but the Contractor shall also investigate new methods to betterassess data quality and consistency. 5.Satellite Data Processing and Distribution. The Contractor shall enhance,maintain, and operate the Ocean Data Processing System (ODPS), and manage the routinedata acquisition and processing, test processing, reprocessing, and distribution of allsatellite data and derived products handled by the OEB (e.g., ocean color from MODIS,SeaWiFS, MERIS, OCTS, and CZCS, SST from MODIS, and SSS and Wind Speed products fromAquarius). The ODPS is a processing control system implemented with SyBASE, whichsupports the scheduling and distribution of processing jobs over many processing servers. The Contractor shall enhance the ODPS and data distribution capabilities of the OEB(i.e., http://oceancolor.gsfc.nasa.gov/) to support new missions and requirements (e.g.,VIIRS, ACE/PACE) or evolving international collaborations.6.NPP VIIRS Support. The activities of the OEB in support of NPP VIIRS includeoperation of the NPP Ocean PEATE and participation in the VIIRS Ocean Science Team(VOST). The Ocean PEATE is one of the elements of the Science Data Segment (SDS) of NPP.The primary role of the NPP SDS is to assess the quality of the NPP Environmental DataRecords (EDRs) for climate research. EDRs are the official products produced by theInterface Data Processing Segment (IDPS) that will be operated by NOAA. The Ocean PEATEsupports the VOST by acquiring and distributing selected data sets of VIIRS observedradiometry and derived ocean color and sea surface temperature (SST) Environmental DataRecords (EDRs). In support of the VOST, the Contractor shall evaluate the EDRs todetermine whether they can provide data continuity for NASA climate data records (CDR).The Contractor shall perform continuous assessment of instrument performance andevaluation of on-orbit radiometric corrections, evaluate the operational algorithmperformance relative to the state of the art, and assess the effectiveness of NPP VIIRScalibration/validation activities. It is possible that the OEBs role on NPP VIIRS willexpand to include operational processing and distribution within the OBPG, if so directedby NASA Headquarters Program Management. If that occurs, the Contractor shall integrateVIIRS processing and distribution capabilities into the ODPS, including the acquisitionand processing of Raw Data Records (RDRs) to Science Data Records (SDRs), the processingof SDRs to higher level data products, and providing the full suite of user supportservices consistent with current MODIS support. 7.Satellite Sensor and Mission Development. The OEB is currently leading thepreliminary science and sensor requirements development for the ocean color capabilitiesof ACE and GEO-CAPE (http://decadal.gsfc.nasa.gov/missions.html). ACE is a missionfocusing on Aerosols, Clouds, and ocean Ecosystems that is expected to launch no earlierthan 2022. Recently, NASA announced the data continuity PACE (Pre-ACE) mission, with alaunch date no earlier than 2018. PACE will contain a sensor to measure ocean color andpossibly a French-contributed polarimeter for aerosol measurements. The sciencerequirements for PACE have not yet been defined, but are expected to be similar to thoseof the ACE mission. The Geostationary Coastal and Air Pollution Events (GEO-CAPE) missionis being formulated for launch no earlier than 2021. To support the establishment ofthe ACE/PACE and GEO-CAPE mission requirements for ocean color, the Contractor shallapply in situ measurements and satellite data, and perform radiative transfer simulationsto study the spectral, spatial and temporal requirements necessary to accurately retrievethe ocean color signal and to capture the variability of ocean biogeochemical dynamics. It is anticipated that GSFC will be awarded management responsibility for PACE missionand that Contractor support requirements within the OEB will expand to include formalmission development (Phase A: Preliminary Analysis, Phase B: Definition, Phase C: Design,Phase D: Development) as well as prelaunch and on-orbit calibration, software andalgorithm development, and development of processing capabilities to produce oceanbiological and biogeochemical products from the ocean color sensor on PACE.8.Aquarius Instrument Operations. Aquarius is a spaceborne sensor designed tomeasure the Sea Surface Salinity (SSS) of the worlds oceans on a global scale. Aquariuslaunched in June 2011 on the SAC-D spacecraft, which was built and is being operated bythe Argentine space agency, the Comisin Nacional de Actividades Espaciales (CONAE). NASA provided the Aquarius combined passive microwave radiometer/active radarscatterometer, the launch vehicle, the Aquarius instrument Command and Control System(ACCS), and the Aquarius data processing system (ADPS). JPL had overall Aquarius projectmanagement responsibilities in the prelaunch phase, but project managementresponsibilities will transfer to GSFC after launch and early orbit check-out and asuccessful Post-Launch Acceptance Review (PLAR). The OEB requires Contractor support forthe software development, documentation and ongoing operations of the ACCS and associatedinstrument operations functions. The Contractor shall coordinate support for SAC-D byNASAs Near Earth Network (NEN) during launch and early orbit operations, specialoperations, and spacecraft emergencies. This will involve interfacing with NEN and CONAEpersonnel in order to maintain and update the Project Service Level Agreement (PSLA) andother plans and documents required to arrange this support. The Contractor shall developand operate the ACCS for Aquarius instrument operations scheduling, instrument commandingand anomaly detection and in support of the Aquarius Instrument Team for anomalyresolution. Close coordination is required with CONAE to resolve issues associated withinstrument scheduling and commanding and data transfer from CONAE to GSFC. TheContractor shall respond to any spacecraft/sensor anomalies that may arise, help todiagnose the impact of such an anomaly on both spacecraft operations and data products,and support the Aquarius Instrument Team to return to routine operations with minimalloss of Aquarius data.The Contractor can expect to make two trips to Argentina and twotrips to the US west coast (Pasadena, CA) per year (2 people) for approximately one weekeach for status and coordination discussions with CONAE and JPL. Seehttp://aquarius.nasa.gov/. 9.Field Data Collection and Laboratory Analyses. To support the satellite oceancolor calibration, validation, and bio-optical algorithm development activities withinthe Branch, as well as on-going research studying the marine carbon cycle and theinteractions and feedbacks between biological (e.g., primary production), chemical (e.g.,organic carbon and nutrient balances and fluxes), and physical processes (riverdischarge, mixed layer dynamics, circulation, etc.), the OEB participates inoceanographic field campaigns and operates laboratory facilities at GSFC to process andanalyze water samples for biological and biogeochemical constituents. The Contractorshall participate in multiple oceanographic cruises each year and perform field datacollection (e.g., above and below water radiometry, inherent optical properties, watersampling). The Contractor shall provide post-cruise analysis (e.g., processing ofradiometric profiles to water leaving radiances, analysis of water samples for dissolvedorganic carbon (DOC), particulate organic carbon, and nitrogen, and determination ofabsorption spectra of particles and colored dissolved organic matter (CDOM). TheContractor shall also conduct laboratory experiments (e.g., to determine process rates ofmicrobial degradation of DOC, sunlight photodegradation of CDOM and DOC, andphytoplankton production of DOC). The Contractor shall perform routine maintenance ofall laboratory and field equipment (replacement parts, arrangements for recalibrations,etc.) and other materials required to support the field and laboratory data collectionand analyses (glassware, filter pumps, shipping containers, etc.). 10.Field Data Archival and Quality Control. All researchers supported by the NASAOcean Biology and Biogeochemistry Program (OBB) to collect in situ atmospheric andbio-optical data are required to submit the data to the OBPG for archival in the SeaWiFSBio-optical Archive and Storage System (SeaBASS). SeaBASS currently includes data fromseveral thousand cruises and hundreds of thousands of stations, and typically receivesnew submissions from as many as ten investigators each month. SeaBASS utilizes arelational database and provides a user interface that allows users to query the databasefor very specific information (inherent and apparent optical properties, biologicalparameters, atmospheric properties, hydrographic variables, time, location, etc.). TheContractor shall maintain the SeaBASS archive and submission system, and process andquality control the data before incorporating it into SeaBASS.The processing includesthe derivation of water leaving radiance, surface reflectance, and diffuse attenuationfrom the optical profile data as well as surface reflectance from above surfaceobservations. The Contractor shall diagnose and quantify possible sources of error inthe data and derived products and recommend improvements and corrections to dataproviders. The Contractor shall assist SeaBASS users with data submission and dataretrieval. The Contractor shall also utilize the SeaBASS holdings to maintain and enhancethe NASA bio-Optical Marine Algorithm Data set (NOMAD) that contains the fieldmeasurements utilized in the derivation and evaluation of bio-optical algorithms withinthe OBPG and by the international research community. See http://seabass.gsfc.nasa.gov/.11.Field Instrumentation and Protocol Development. The OEB is currently engaged inthe development of advanced field instrumentation to improve accuracy, spectral range,frequency, and simultaneity in the measurement of in situ oceanic radiometry (ultravioletto near-infrared) and atmospheric properties, and provide vicarious calibration andalgorithm validation capabilities to enhance a) the atmospheric correction of ocean colordata, b) the accuracy in separating the living and nonliving components of seawater, c)the derivation of water-leaving radiances and associated data products in opticallycomplex (coastal) waters, and d) the understanding of the interaction between the oceanand atmosphere. An example is the Optical Sensors for Planetary Radiant Energy (OSPREy)instrument (http://neptune.gsfc.nasa.gov/osb/index.php?section=242. The Contractor shallparticipate in field instrument development and contribute to the conception, design,prototyping, protocol development, calibration, and field commissioning of both fixedwavelength and hyperspectral optical sensors for above- and in-water systems.Documentation will be produced for all phases of instrument development and theContractor shall contribute not only to drafting the documentation, but also tofinalizing and facilitating the publication and distribution of the documentation. TheContractor shall also maintain the NASA Ocean Optics Protocols that are currentlyavailable from http://oceancolor.gsfc.nasa.gov/DOCS/TechMemo/. These static documentsshall be converted to a new living document format, to enable more frequent updating andextension to new measurements. The Contractor shall manage the updates and providetechnical editing and document layout using TEX. In all phases of document developmentand distribution, the Contractor shall adhere to NASA Scientific and TechnicalInformation (STI) standards and methods, including Center for AeroSpace Information(CASI) archiving procedures.12.Ocean Ecosystem and Carbon Budget Modeling. The Contractor shall develop coupledocean dynamical-ecosystem-carbon-system models to study the impacts of environmentalconditions and climate change on marine ecosystem species composition and abundance,carbon transformations within oceans, ocean acidification, and CO2 exchange with theatmosphere. This includes coupling with in situ data and satellite remotely sensed data(ocean color, SST, surface winds, etc.) to validate model predictions and assist in theinterpretation of the model results.13.User Support and Documentation. The OEB places a high priority on documentationand communication with the research user community. The Contractor shall maintain adocumentation tree on the ocean color website that details the satellite ocean dataprocessing algorithms and sensor calibration activities. The Contractor shall provideanalysis results for all proposed reprocessing changes prior to initiation of areprocessing (OBPG, Aquarius), and report any significant degradation in sensorcalibration as needed to inform the user community of potential impacts to distributedproducts. The Contractor shall prepare and deliver oral presentations as requested byNASA at several science team meetings and conferences each year. This will likelyinclude local meetings of the MODIS and NPP Science Teams, national meetings of the NASAOcean Biology and Biogeochemistry Program, national and international ocean scienceconferences such as ASLO, AGU, and Ocean Optics, and engineering conferences such as theannual meeting of the Society of Photo-Optical Instrument Engineers (SPIE) in San Diego.Typically, one to three talks will be presented by OEB Contract staff at each meeting.The Contractor shall publish descriptions of innovative methods and analyses (e.g.,calibration methods, algorithm advancements, changes in satellite product quality due toreprocessing) and Laboratory and Field measurement protocols in NASA Technical Memoranda,conference papers (e.g., SPIE, Ocean Optics), and refereed journals (e.g., AppliedOptics, Remote Sensing of Environment, typically 2-4 papers per year).The Contractorshall also monitor and respond to user queries on the Ocean Color Forum(http://oceancolor.gsfc.nasa.gov/forum/oceancolor/forum_show.pl), which currentlyreceives approximately 200 user posts per month.14.Systems Administration. The Contractor shall provide systems administrationsupport for all government-provided computing equipment used in the satellite dataprocessing and related analysis activities (i.e., OBPG, NPP/VIIRS Ocean PEATE, Aquarius,and new mission development). This currently includes approximately 45 Desktop andlaptop systems (Linux and Macintosh), 65 dedicated ODPS processing servers (Linux), and110 data storage servers (totaling nearly three Petabytes), as well as a high-speedinternal network and external networking interfaces. The Contractor shall understand,interpret and implement all network and system security procedures required byNASA/Goddard Space Flight Center, and provide routine maintenance, data integrity, systemupgrades, and problem resolution. The Contractor must also be able to respond tochanging NASA requirements (e.g., new missions, expanding data volumes, and enhancedprocessing needs), and provide evaluation and implementation support for the smoothtransition of new technology to meet those changing requirements. Historically, roughly50% of the ODPS processing servers and storage systems have been replaced or repurposedevery 18 months, resulting in significant increases in storage capacity and processingthroughput.15.Office and Laboratory Management. The Contractor shall provide laboratory andoffice management support for OEB laboratory facilities in GSFC building 22 and OEBoffices in GSFC building 28. This support includes interfacing with GSFC facilitiesmanagement for personnel access, telecommunications, and power and space requirements,management of office equipment and furnishings, coordination of visitor access foron-site meetings, and logistical support for packing, shipping, and receiving needs. TheContractor shall be responsible for the transportation and maintenance of all laboratoryand field equipment. Transportation includes the proper scheduling, packing, andinventorying of all equipment shipments, including the timely submission of completedpaperwork to the shipping authority. All shipments shall be tracked and potentialnon-delivery of a shipment shall be identified promptly with recommendations forcorrective measures. Maintenance includes timely adherence to a maintenance schedule,identifying which components require refurbishment or replacement and contracting for thework to be done, and ensuring all field instruments are cleaned and inspected subsequentto each time they are used while in the field. The Contractor shall maintain an inventoryof all OEB property, including tagged property numbers, location, and assigned user, andcoordinate the excessing of unneeded equipment through GSFC property management. The due date for responses is extended.Documents related to this procurement will be available over the Internet. Thesedocuments will reside on a World Wide Web (WWW) server, which may be accessed using a WWWbrowser application. The Internet site, or URL, for the NASA/GSFC Business Opportunitieshome page is http://prod.nais.nasa.gov/cgi-bin/eps/bizops.cgi?gr=D&pin=51 Offerors are responsible for monitoring this site for the release of the solicitation andany amendments. Potential offerors are responsible for downloading their own copy ofthe solicitation and amendments (if any).
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