QA Engineer/Automation Architect (50898) Gap Solutions, Inc.QA Engineer/Automation Architect (50898)Bethesda, MDPossess a strong understanding of OIM's processes and continually explores ways to leverage available tools, technologies and platforms to improve processes to meet business needs and organizational goals. Position Objective: The Information Services Branch (ISB) of the Office of Intramural Management (OIM), NHLBI, is looking for a dynamic team member to work seamlessly within our organization for the implementation of innovative IT solutions.
Cloud Network Engineer T-Rex Solutions LLCCloud Network EngineerDC$100,000–$145,000 / yearThis position will be responsible for managing the configuration, installation and on-going support of the Network Infrastructure which includes Palo Alto firewalls, Cisco VPN Concentrators, Cisco CSR devices as well as Networking in cloud platforms such as Azure and OCI. T-Rex offers both IT and professional services to numerous Federal agencies and is a leader in providing high quality and innovative solutions in the areas of Cloud and Infrastructure Services, Cyber Security, and Big Data Engineering.
NewRCDD Technology Engineer JobotRCDD Technology EngineerWashington, DC$140,000–$190,000 / yearInformation collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. This role serves as a trusted advisor to clients, leading technology consulting efforts while supporting business development, proposal preparation, project execution, and team mentorship.
CBI Electrical Engineer Illinois Tool Works IncCBI Electrical EngineerBaltimore, MD$101,200–$151,800 / yearIt is our mission to provide food equipment that foodservice and food retail professionals can trust to work hard and deliver quality, consistent results day in and day out, empowering them to focus on what they love most-creating great food for great people. As CBI Electrical Engineer you will be part of the Vulcan New Product Development Team (COE), responsible for developing new products including designing, prototyping and testing solutions.
AI Quality Engineer INSPYR SolutionsAI Quality EngineerMerrifield, VAThe successful candidate will evaluate and certify new portal capabilities, self-service workflows, automation features, developer onboarding experiences, and platform enhancements to ensure they meet usability, reliability, operational readiness, governance, and business value expectations before release to engineering teams. It is a specialized engineering position focused on validating AI systems, Retrieval-Augmented Generation (RAG) architectures, agent workflows, orchestration frameworks, observability platforms, security controls, and production readiness requirements.
Electrical Solutions Engineer - Critical Facilities PkazaElectrical Solutions Engineer - Critical FacilitiesAshburn, VAManage projects, create designs and plans, provided and gather specifications, and execute assignments in a multidisciplinary electrical engineering design role for all sizes of data center facility design projects- enterprise data centers, Colocation Providers and for Hyperscale Companies. Extensive Experience with Electrical Power Systems and Equipment - UPS / Uninterruptible Power Supply, Generators, Batteries, switchgear, Power Distribution Units, Backup Power, Electrical Power, Power Systems, Medium Voltage, High Voltage, etc.
Manufacturing Quality Engineer Polymer Concepts TechnologiesManufacturing Quality EngineerHanover, MarylandInteracts with representatives from a variety of functional areas, including design engineering, manufacturing engineering, purchasing and production and inspection personnel relating to products and programs (PFMEAs, Capability Studies, Risk Analysis and Measurement System Analysis) associated with Quality Assurance and Customer requirements. Essential Job Functions Reviews company and customer drawings, changes, inspections sheets, process procedures, test procedures, procurement documentation, quality manuals and inspection sheets ensuring company and customer quality and configuration requirements are met on assigned products, programs and projects.
Senior Application Engineer, CNC Machining Xometry IncSenior Application Engineer, CNC MachiningNorth Bethesda, MD$86,000–$111,000 / yearThe position will require competencies that include CAD proficiency, knowledge of sheet metal design and fabrication methods, experience communicating sheet metal design for manufacturability feedback, costing, and sound technical communication aptitude. Xometry's digital marketplace gives manufacturers the critical resources they need to grow their business while also making it easy for buyers at Fortune 1000 companies to tap into global manufacturing capacity.
NewLead Structural (Buildings) Engineer WSP Global IncLead Structural (Buildings) EngineerArlington, VA$122,700–$182,200 / yearThe role is a good fit for an experienced structural engineer who is ready to lead major portions of structural design work, operate with greater autonomy, provide technical direction to project teams, and help mentor developing staff without necessarily serving as a direct people manager. For a lead engineer, this role offers the opportunity to own significant technical work, guide structural design approach, coordinate directly with other disciplines and clients, review work prepared by others, and develop as a technical leader within the Federal Programs practice.
Marine Engineer GFT Infrastructure IncMarine EngineerWashington D.C., DC$115,000–$150,000 / yearWhether working on highways and bridges or traffic engineering, our team excels in resilient, sustainable design and construction, delivering innovative solutions that address the complexities of modern, multimodal roadway systems and ensure safe, efficient, and reliable travel for all. The Project Engineer will receive supervision and guidance related to overall objectives, critical issues, emerging concepts, and policy matters, while independently handling most day-to-day technical challenges.
Civil Engineer Land Development Kimley-Horn and Associates IncCivil Engineer Land DevelopmentReston, VAIn addition to strong technical experience, other responsibilities will include research, coordination, project management, staff management, cost estimating, permitting for land disturbance and preparation of bid packages as well as technical specifications. Candidates should have experience with site civil design, permitting, and applicable software applications including hydrology modeling program, storm drainage programs, AutoCAD, and Civil 3D.
Engineer: Tier 2 (On-Site) Trace3Engineer: Tier 2 (On-Site)Ashburn, VA$85,000–$95,000 / yearQualifications & Interests: A minimum of 5 years of experience in enterprise-level network design and support, including: IEEE 802.1, WAN/LAN, optimization, load balancing, routing, switching, QOS, TCP/IP, P2P, and P2MP wireless equipment, with hands-on experience administering Cisco wireless access points and controllers. About the Role: Under the general direction of the Manager, Professional Service, the Engineer will provide clients with remote and on-site support services across North America (and international locations, as applicable) in a wide range of client environments.
Sr Wireless Network Engineer CACISr Wireless Network EngineerChantilly, VirginiaPay Range : There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications. Network Design & Engineering: Contribute to the creation of network architectures, topology diagrams, and data flow artifacts (Visio) for wireless solutions, ensuring high availability and performance.
ETL Engineer VTGETL EngineerChantilly, VirginiaFull timeThe ideal candidate will be responsible for designing, building, and maintaining data pipelines and integration processes that enable reliable, timely, and high-quality data delivery across the organization. This role requires strong technical capabilities, a deep understanding of data architecture, and the ability to collaborate effectively with cross-functional stakeholders.
Wastewater Treatment Design Engineer GFT Infrastructure IncWastewater Treatment Design EngineerFairfax, VA$90,000–$200,000 / yearUse processes such as physical/chemical primary treatment, conventional activated sludge, biological nutrient removal, fixed-film processes, membrane bio-reactors (MBR), side stream treatment, tertiary filtration, auxiliary wet-weather treatment, and disinfection. 8 + years of experience required in wastewater discipline, particularly as a wastewater engineer designing (study, plans and specifications) water and/or wastewater infrastructure (i.e. treatment and collection/distribution projects).
Wastewater Treatment Process Engineer GFT Infrastructure IncWastewater Treatment Process EngineerFairfax, VA$80,000–$180,000 / yearUse processes such as physical/chemical primary treatment, conventional activated sludge, biological nutrient removal, fixed-film processes, membrane bio-reactors (MBR), sidestream treatment, tertiary filtration, auxiliary wet-weather treatment, and disinfection. In this capacity, the successful candidate will be responsible for the following: System Design:Lead and support the planning and process evaluation of wastewater processes, including biological nutrient removal, sludge handling, and filtration processes.
Water Treatment Facility Design Engineer GFT Infrastructure IncWater Treatment Facility Design EngineerBaltimore, MD$90,000–$200,000 / yearDesign new treatment systems or upgrade existing systems, including pre-treatment, various filtration processes including granular media and membranes, chemical storage and feed, UV and other advanced treatment technologies, and pumping equipment. Demonstrated experience and knowledge in primary treatment, filtration processes, chemical storage and feed, advanced water treatment, disinfection, hydraulics, and solids processing and handling preferred.
Water Treatment Process Engineer GFT Infrastructure IncWater Treatment Process EngineerFairfax, VA$80,000–$180,000 / yearIn this capacity, the successful candidate will be responsible for the following: System Design:Lead and support the planning and process evaluation of potable water treatment processes, including intakes and raw water pump stations, coagulation, flocculation, sedimentation, disinfection, filtration, iron and manganese removal, PFAS treatment, chemical systems, and process wastewater and residuals handling. Experience in the planning and execution of projects: including project approach and resource needs, options analysis, process and equipment design, and engineering document development through the project delivery phases of plan, design, procure, construct, and commissioning.
Full Stack Engineer UnissantFull Stack EngineerHerndon, VAThe ideal candidate is a hands-on engineer who is energized by building first-of-a-kind solutions, comfortable making independent technical choices, and skilled at turning high-level client needs into practical, secure, and scalable systems. Design, build, maintain, and optimize data pipelines, workflows, and application components in greenfield environments where few or no legacy systems, schemas, or reusable technical assets exist.
Engineer: Tier 2 (On-site) Trace3Engineer: Tier 2 (On-site)Ashburn, VA$85,000–$95,000 / yearA minimum of 5 years of experience in enterprise-level network design and support, including: IEEE 802.1, WAN/LAN, optimization, load balancing, routing, switching, QOS, TCP/IP, P2P, and P2MP wireless equipment, with hands-on experience administering Cisco wireless access points and controllers. Under the general direction of the Manager, Professional Service, the Engineer will provide clients with remote and on-site support services across North America (and international locations, as applicable) in a wide range of client environments.
Senior Transmission Line Engineer Leidos Holdings IncSenior Transmission Line EngineerWashington, DCRemote$73,450–$132,775 / yearLeidos seeks the best and the brightest, and in return, we invest in you, with an eye on your future, through career advancement, growth opportunities, and continuous improvement via mentoring, formal and informal project management training and assistance with obtaining pertinent certifications. Original Posting: February 27, 2026 For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.
Natural Gas Engineer Transmission and Facilities Kimley-Horn and Associates IncNatural Gas Engineer Transmission and FacilitiesReston, VALead and coordinate multidisciplinary engineering design efforts, working closely with Civil/Structural, Electrical, Instrumentation & Control, and other disciplines. Bachelors or Masters from an ABET accredited university in Mechanical Engineering, Petroleum Engineering, Civil Engineering or related field.
Full Stack Engineer Unissant IncFull Stack EngineerHerndon, VAThe ideal candidate is a hands-on engineer who is energized by building first-of-a-kind solutions, comfortable making independent technical choices, and skilled at turning high-level client needs into practical, secure, and scalable systems. Design, build, maintain, and optimize data pipelines, workflows, and application components in greenfield environments where few or no legacy systems, schemas, or reusable technical assets exist.
Structural Engineer Ports & Maritime Kimley-Horn and Associates IncStructural Engineer Ports & MaritimeReston, VAPerform structural design calculations, plan production activities, and prepare project document submittal packages, while maintaining a Quality Control program for the entire project. We take pride in how our employee retention, robust benefits package, and company values have led to Kimley-Horn's placement on the Fortune "100 Best Companies to Work" list for 19 years!
Civil Engineer Renewable Energy Kimley-Horn and Associates IncCivil Engineer Renewable EnergyBaltimore, MDKimley-Horn''s Baltimore City, Maryland (MD) office is seeking a Civil Engineer with 4+ years of experience to join their Renewable Energy team! We take pride in how our employee retention, robust benefits package, and company values have led to Kimley-Horn's placement on the Fortune "100 Best Companies to Work" list for 19 years!
Supervisory Civil Engineer District Of ColumbiaSupervisory Civil EngineerWashington, DCResidency Requirement Statement: If the position you are applying for is in the Career, Management Supervisory, or Educational Service at an annual salary of one hundred fifty thousand dollars ($150,000) or more, you must establish residency in the District of Columbia within one hundred eighty (180) days of the effective date of the appointment and continue to maintain residency within the District of Columbia throughout the duration of the appointment. Residency Requirement: If the position you are applying for is in the Career, Management Supervisory, or Educational Service at an annual salary of one hundred fifty thousand dollars ($150,000) or more, you must establish residency in the District of Columbia within one hundred eighty (180) days of the effective date of the appointment and continue to maintain residency within the District of Columbia throughout the duration of the appointment.
NewSenior Information Systems Security Engineer (ISSE) Chenega CorporationSenior Information Systems Security Engineer (ISSE)Reston, VAIn an ever-changing economy, Cyberstar helps companies better read and understand their market data through the synchronization of process innovation, human dynamics, analysis, and the integration of data technology capabilities, to ensure functional optimization in their business. The Senior Information Systems Security Engineer (ISSE) provides expert cybersecurity engineering support for Authorization and Authorization (A&A), network domain certification, Cross Domain Solutions (CDS), and ongoing risk management.
Principal Engineer, Survivability (R4608) Shield AIPrincipal Engineer, Survivability (R4608)Washington, DCLI-AD6 #LF Full-time regular employee offer package: Pay within range listed + Bonus + Benefits + Equity Temporary employee offer package: Pay within range listed above + temporary benefits package (applicable after 60 days of employment) Salary compensation is influenced by a wide array of factors including but not limited to skill set, level of experience, licenses and certifications, and specific work location. Lead or support signature testing efforts, including indoor and outdoor RCS range tests, validation campaigns, and supplier-level hardware evaluations.
Substation Electrical Engineer II Bowman Consulting Group, Ltd.Substation Electrical Engineer IIReston, Virginia$85,000–$115,000 / yearFull timeIt is an opportunity to be part of a diverse and engaged community of professionals, to be treated as a respected and valued member of a motivated team and to be empowered to do exceptional work that advances the best interest of everyone involved. Collaborate closely with substation engineers and project managers to translate engineering concepts into accurate, constructible drawings.
Food Safety & Quality Assurance Supervisor Misfits MarketFood Safety & Quality Assurance SupervisorHanover, MD$75,000–$85,000 / yearWe deliver organic produce, high-quality meats and seafood, plant-based proteins, dairy, bakery, wine, and other grocery items to nearly every zip code in 48 states at up to 30 percent off traditional grocery store prices. By tackling inefficiencies in the food system, our passionate and motivated team of problem solvers helps save an average of 500,000 pounds of food per week from waste or lesser outcomes, with an all-time savings of 190+ million pounds of food.
Transportation Planning Engineer III HNTB CorpTransportation Planning Engineer IIIArlington, VA$83,373.48–$163,005.83 / yearExhibiting experience with Traffic Simulation Software (Synchro, HCS, VISIM, SIDRA, etc.), ArcGIS, Microsoft Office Suite, MicroStation and/or AutoCad or other software as required for job assignments. Exhibiting strong communication, presentation and public speaking skills, with experience in public involvement and presentation of technical information to public agencies, local leaders and stakeholders.
Senior Mechanical Engineer, Energy Systems Ramboll UK LtdSenior Mechanical Engineer, Energy SystemsArlington, VA$110,000–$140,000 / yearMost of the work will be related to heating, ventilation and Air Conditioning (HVAC); however, the candidate should also expect work in industrial piping, plumbing, central utility plants, compressed air systems, chilled water systems, steam systems, and fire protection. Founded in Denmark, Ramboll is a people company that has over 2,000 experts working across more than 60 offices in the Americas applying their passion to deliver innovative solutions across Buildings, Transport, Energy, Environment & Health, Water, Management Consulting, and Architecture and Landscape.
NewSoftware Systems Integration Engineer - RHEL/Windows - Secret Clearance Required JobotSoftware Systems Integration Engineer - RHEL/Windows - Secret Clearance RequiredManassas, VA$90,000–$115,000 / yearInformation collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. Integrating and testing software deliveries, verifying bug fixes, and performing regression testing across multiple hardware and operating system configurations.
Senior Intune Engineer- Active Secret Clearance Required VETS, IncSenior Intune Engineer- Active Secret Clearance RequiredWashington, DCHowever, employees who have access to the compensation information of other employees or applicants as a part of their essential job functions cannot disclose the pay of other employees or applicants to individuals who do not otherwise have access to compensation information, unless the disclosure is (a) in response to a formal complaint or charge, (b) in furtherance of an investigation, proceeding, hearing, or action, including an investigation conducted by the employer, or (c) consistent with the contractor’s legal duty to furnish information. This senior-level Windows engineering position provides IT support in integrating and operating Microsoft Configuration Manager (MCM) and Intune for managing and maintaining department endpoints.
Tester (Functional / QA Engineer) - IRS Sky SolutionsTester (Functional / QA Engineer) - IRSTysons Corner, VARemote$99,000–$149,000 / yearOur expertise spans AI-first enablement, delivering innovative solutions and advanced cybersecurity, fortifying digital ecosystems against emerging threats and digital transformation through low-code/no-code development, cloud solutions, and agile methodologies. Compensation is determined in good faith and may vary based on job-related factors, including relevant experience, skills, education, certifications, clearance level, labor category alignment, contract requirements, work location, internal equity, and business needs.
Hardware Quality Assurance & Control Engineer Research InnovationsHardware Quality Assurance & Control EngineerAlexandria, VAAs a Hardware Quality Assurance & Control Engineer supporting Dragonfly Systems, you will be responsible for ensuring the quality, reliability, configuration control, and mission readiness of Dragonfly hardware products throughout the manufacturing lifecycle. This role is critical to scaling Dragonfly production while maintaining the performance, ruggedization, and operational reliability required by defense and national security customers.
Senior Addepar Data Engineer / Analyst Brown Advisory IncSenior Addepar Data Engineer / AnalystBaltimore, MD$132.50–$172.50 / hourAnalyze, troubleshoot, and resolve complex data issues involving accounts, entities, ownership structures, portfolios, holdings, transactions, securities, classifications, attributes, benchmarks, performance, and reporting outputs. Strong understanding of the Addepar data model, including accounts, entities, ownership structures, portfolios, holdings, transactions, securities, classifications, attributes, benchmarks, performance, and reporting views.
NewSenior Electrical Engineer - Facilities Design EKFoxSenior Electrical Engineer - Facilities DesignChantilly, VA$100,000–$170,000 / year10+ years of experience in design and specification of: lighting systems, power systems, fire alarm systems, telcom/data systems, medium voltage power systems, UPS systems, emergency generator systems, grounding systems, and utility systems. Typical duties that the Senior Electrical Engineer will be expected to perform will include writing technical reports, performing calculations, selecting equipment, and designing lighting, power, fire alarm, security and telcom/data systems.
Bioinformatics Engineer (Hybrid) Quest Diagnostics IncBioinformatics Engineer (Hybrid)Baltimore, MD$95,000–$125,000 / yearProficiency in bioinformatics pipeline workflow management, particularly Nextflow (preferred), Cromwell, or CWL.Hands-on experience developing cloud-native infrastructure (AWS preferred) for storage, batch computing, and serverless applications. Students & early career | Quest Diagnostics Whether you are transitioning from high school, college or to civilian life after serving in the military, we have programs that can help you reach your goals - and share in the incredible work we do.
Sr. Application Engineer Rohde & Schwarz GmbH & Co KGSr. Application EngineerColumbia, MDLtd (RSINDIA) which is 100% owned subsidiary of Rohde & Schwarz GmbH KG & Co, Germany, whose head office is located in New Delhi and branch offices in Bangalore, Hyderabad, Mumbai and Field presence at Ahmedabad, Chennai and Pune. The company continuously invests in training its service and sales personnel regularly to maintain a high level of technical competence in pre- and post-sales support and outstanding quality in services viz.
Senior Storage Engineer TekSynapSenior Storage EngineerMaryland$145,000–$175,000 / yearFull timeThis role is responsible for the design, optimization, lifecycle management, and modernization of storage infrastructures across multiple enclaves, ensuring high availability, data integrity, resiliency, and compliance with DoD security requirements. Expert ‑ level knowledge of SAN/NAS architectures, storage arrays (e.g., NetApp, Dell EMC, HPE, Pure), storage fabric technologies, multipathing, and high ‑ availability design.
Civil/Structural Engineer Nightwing Intelligence SolutionsCivil/Structural EngineerSpringfield, Virginia$99,000–$206,000 / yearThis role centers on performing structural analyses and generating detailed designs, collaborating closely with mechanical, civil, and electrical engineering professionals to produce effective solutions. Our capabilities include cyber space operations, cyber defense and resiliency, vulnerability research, ubiquitous technical surveillance, data intelligence, lifecycle mission enablement, and software modernization.
Lead Water Resources Engineer/Project Manager STV Group IncLead Water Resources Engineer/Project ManagerFairfax, VA$111,362.75–$127,271.72 / yearThis position offers the opportunity to work on impactful infrastructure projects supporting VDOT, DDOT, City of Alexandria, Amtrak, VPRA, and local municipalities, while advancing technical leadership and client engagement responsibilities. This role is ideal for an experienced water resources engineer who wants to lead complex design, support public-sector clients, and mentor early-career staff while contributing to high-visibility transportation programs.
Engineer, Water SidaraEngineer, WaterWashingtonThe successful candidate will play a key role in the planning, design, and delivery of municipal water, wastewater, and stormwater systems, with a focus on producing high-quality, practical engineering solutions. TYLin is a globally recognized, full-service infrastructure consulting firm committed to providing innovative, cost-effective, constructible designs for the global infrastructure market.
Geotechnical Engineer - Mid-Level Whitman, Requardt and Associates LLPGeotechnical Engineer - Mid-LevelBaltimore, MD$140,000–$215,000 / yearThe specific compensation offered to a candidate may vary based on factors including, but not limited to, the candidate's relevant knowledge, training, skills, work location, and/or experience. Requirements: Bachelor's degree specializing in Geotechnical Engineering, Master's degree specializing preferred.
Geotechnical Engineer Whitman, Requardt and Associates LLPGeotechnical EngineerBaltimore, MD$90,000–$185,000 / yearThe specific compensation offered to a candidate may vary based on factors including, but not limited to, the candidate's relevant knowledge, training, skills, work location, and/or experience. Requirements: Bachelor's degree specializing in Geotechnical Engineering, Master's degree specializing preferred.
Senior Geotechnical Engineer Whitman, Requardt and Associates LLPSenior Geotechnical EngineerBaltimore, MD$160,000–$240,000 / yearThe specific compensation offered to a candidate may vary based on factors including, but not limited to, the candidate's relevant knowledge, training, skills, work location, and/or experience. Requirements: Bachelor of Science degree specializing in Geotechnical Engineering, Master's degree preferred.
Civil Engineer (Water/Wastewater) EBA Engineering IncCivil Engineer (Water/Wastewater)Laurel, MDEBA provides civil/site, geotechnical, structural, transportation, water resources, and water systems engineering; surveying and mapping; construction management/inspection; field and laboratory material testing; subsurface utility engineering; drilling; asset management; and geospatial technologies services to clients throughout the Mid-Atlantic region. In the event a recruiter or agency submits a resume or candidate without a previously signed agreement, EBA explicitly reserves the right to pursue and hire those candidate(s) without any financial obligation to the recruiter or agency.
NewStaff Engineer, Structural Baltimore Aircoil CoStaff Engineer, Structuraljessup, MD$90,000–$154,100 / yearTravel as needed to global engineering centers in Europe and Asia, and occasionally as needed to regional manufacturing facilities, test laboratories, technical conferences, and professional association meetings, etc. The Staff Engineer, Structural Systems, is charged with leading the structural engineering execution of major product development programs and supporting the structural integrity of product platforms.
Water Resources Engineer ATCS PlcWater Resources EngineerHerndon, VA$82,000–$127,000 / yearDemonstrate working ability with hydraulic computer design software such as: Microstation, Inroads, OpenRoads Designer, Geopak, Pond Pack, HEC-RAS, GISHydro, HEC-HMS, HydroCAD, WinTR-55, WinTR-20, ArcGIS, Excel, AutoCAD 3D, HEC-RAS. 3+ years experience in Water Resources Design Engineering for transportation engineering projects with topics such as H&H modeling, floodplain management, stream restoration, stormwater management design, drainage design, and erosion and sediment control design.