diking damming diverting and retention

What type of PPE allows a responder to work in total flame for a short period of time? (TRT 19:04)Available online as Interactive Courses or Streaming Video, on DVD, PowerPoint, and manuals.Call or visit our website for product information1-800-755-1440 ext 3For Instructors visit: www.action-training.comFor Individuals visit: www.myfireflix.comProduced by Action Training Systems Why should responders avoid contact with flammable or combustible products? Contrast a one-circuit circulatory pathway with a two circuit pathway. Explains the need to consider both the chemical and physical properties of hazardous materials in spill operations. 24. Tactics used to contain the product in its original (or another) container, thereby preventing it from escaping? B. Corrosive liquid tanks C. contain the release of the chemical in its original container. The use of remote shutoffs. C. Dispose of equipment as though it were a hazardous material. D. negative-pressure ventilation removes atmospheric contaminants more effectively than positive-pressure ventilation. Damming, diking and diverting hazardous spills; foam application; Level A and B HAZMAT suits and decontamination. If a first responder becomes contaminated before realizing the situation, they should immediately withdraw and: follow local procedures for emergency decontamination, A hazardous material has entered or potentially entered your body. High temperature protective clothing is designed to protect the wearer from: short-term exposures to high temperatures. Absorption. There are currently seven districts within Cowlitz County. %%EOF Boundaries should be updated as data is given to the elections office and then updated through the assessor's office. In what ways can a responder take steps to avoid contamination that may lead to exposure? (a) Were you surprised to learn this? diking damming diverting and retention. A decrease in the intensity of sounds 0000002780 00000 n use of compatible plugs and patches to reduce or temporarily stop the flow Training Objectives: 1. overpack containers should be compatible with the hazards of the materials involved. D. protect exposure and let a fire burn until the fuel is consumed, D. protect exposure and let a fire burn until the fuel is consumed, 22. Wszystkie formalnoci zwizane z pogrzebem prosimy kierowa do biura na cmentarzu przy ul. Scot a wall, esp a dry-stone wall. Drainage Improvement District No. Most PPE inhibits the body's ability to disperse heat and moisture, which can lead to: Which tactic is performed to control air movement using natural or mechanical means? List the advantages and limitations of die casting. Proboszcz pisze do nich zaskakujcy list i daje prezent, Gdy spad na mnie gruz, woaem Maryj. Despite similar social-political conditions and the same administrative framework, irrigation facilities are established, used D. control the flow of liquid hazardous materials away from the Diking and drainage district boundaries as drawn with the best available data. Explore. (636) They are even different JPR from what I can tell. DanceComp Genie Competition Software includes Online class management, registration, event scheduling & tabulation and video critique systems. Water fog nozzles are incapable of vapor suppression. High pressure tanks B. neutral-pressure ventilation removes atmospheric contaminants more effectively than positive-pressure ventilation. It can be used as a cooling agent. Which Retention Schedules Do Diking and Drainage Districts Use? We've updated our privacy policy. I was assigned to sweep up some sand and put it on the leaking antifreeze from one of the pickups. 2011 ford crown victoria engine; feroze gandhi death reason; garmin express installer ne se lance pas; what is drop shot in table tennis; is weetabix good for high blood pressure C. Foam concentrates that are intended for polar solvents can be used on hydrocarbon fires. Chapter 14 Hazmat for First Responders-5th ed, Chapter 3 Implementing Awareness Level Actions. What does diking mean? Creative Damming & Diking 101. 0000205425 00000 n D. facility or pipeline operators. The correct use of a specific and appropriate PPE ensemble: requires special training and instruction. Tactics used to confine a hazardous material that has already been released from its container? We've encountered a problem, please try again. With furrow irrigation, dikes should be established on alternate rows and water should be applied to the undiked furrows. Why should responders NOT use water streams in conjunction with the application of foam for vapor suppression? A. law enforcement. B. Confine and analyze runoff water for possible contamination. Water destroys and washes away foam blankets. jeopardy college tournament 2021 soft cotton bandanas made in usa. When creating a dike or a dam, the first responder is either stopping the flow of the material or keeping it from a specific area. Kard. Outlines various spill control options and demonstrates basic procedures for diking, diverting, damming and retaining spills. Have a safe and fun Holiday weekend from HazMatNation. B. spill control. B. to the left. Zmiany warunkw przechowywania lub uzyskiwania dostpu do plikw cookies mona dokona w kadym czasie. 0000055141 00000 n I think they are all three different. Which type of decon may involve using wipes or other decon methods to remove soot from the face, head, and neck? 1. a barrier of concrete, earth, etc, built across a river to create a body of water for a hydroelectric power station, domestic water supply, etc. Every-row furrow diking should be used for maximum water storage. 84 0 obj<>stream B. A student was conducting an investigation with a wave tank in which the waves refract from one medium into another in which the wave velocity is lower. Which statement regarding medical monitoring of responders wearing PPE is accurate? A. Defensive spill control tactics aimed at reducing the amount of harm the material causes include? But I've never had anyone explain the difference between damming and diking. 1 July 18, after nobody offered to be a diking district commissioner. Discusses equipment and materials required for spill control and how to employ them. B. Confine and analyze runoff water for possible contamination. Absorbents retain the properties of the materials they absorb. 11. D. not be used on hydrocarbon spills such as oceanic crude oil. Instant access to millions of ebooks, audiobooks, magazines, podcasts and more. Enjoy access to millions of ebooks, audiobooks, magazines, and more from Scribd. Incident status, identified hazards, and tasks to be performed should be communicated during the: Which statement about the service life of CPC is MOST accurate? When a chemical passes through a fabric on a molecular level, it is called: What is a common feature of respiratory equipment? In fact there are over 100 dams on the river. w. B. 0000251269 00000 n Typical work uniforms, street clothing, or coveralls. Introduction (2 of 3) . A. zero-pressure ventilation removes atmospheric contaminants more effectively than positive-pressure ventilation. Information and translations of diking in the most comprehensive dictionary definitions resource on the web. The action taken place to reduce the emission of vapors at a hazardous material spill is? 0000002704 00000 n C. Nonpressure liquid tanks The exposed surface is inherently tacky so that it is adherable to the spill surface to prevent flow of liquid past the dike. It provides the highest level of protection against vapors, gases, mists, and particles, for the respiratory tract and skin. Get started for FREE Continue. Polityka Prywatnoci Informacje o cookies, Centrum Duszpasterstwa Myliwych i Lenikw Archidiecezji Wrocawskiej, Przeorat Wrocawskiej Prowincji Zakonu Rycerskiego witego Grobu w Jerozolimie, Miejsce Spotka Modlitewnych Polskiej Komendy Zakonu witego Huberta, Rkodzieo Benedyktynek Sakramentek z Wrocawia. (626) A device for damming and diverting liquid on a spill surface has an elongated, pliable dike having a first end, a second end and an exposed surface. 11513 NE 139th Avenue Brush Prairie, WA 98606 360.907.5553 Secretary . The largest projected increases in TP and reactive P (RP) retention by damming will take place in Asia and South America, especially in the Yangtze, Mekong, and Amazon drainage basins. you learned that images in a mirror are either behind the mirror or visible in front on a screen. Competencies: Many translated example sentences containing "diking" - Spanish-English dictionary and search engine for Spanish translations. Light. Think of this. An ensemble that demonstrates the best chemical resistance against the widest range of chemicals should be selected. Which level of PPE is worn when the highest level of respiratory protection is necessary, but a lesser level of skin protection is needed? When using SCBA, where does the air supply come from? -Vapor dispersion -Ventilation -Dispersion -Dilution -Dissolution -Neutralization (considered a Tech level tactic) D. Vapor Suppression. The largest projected increases in TP and reactive P (RP) retention by damming will take place in Asia and South America, especially in the Yangtze, Mekong, and Amazon drainage basins. C. Water fog nozzles can only be used on flammable liquid fires. Dilution- Chemical method. A. attempt to extinguish the fire immediately. This practice involves mechanical construction of dams at regular intervals across furrows between crop rows, thus forming microbasins. A. Aerated foam can be applied in smaller quantities. Mistrzostwa wiata w skokach narciarskich: Jest brzowy medal dla Polaka! Discuss spill control basics in incidents involving hazardous materials 2. Damming, diking, and diversion. I always see and hear them referred to together, and have never really heard anyone sufficiently explain the difference between the two. , dike. What must responders do after using water streams for vapor dispersion? No need to register, buy now! C. It can be used for dilution of toxic materials. At a fixed facility or at a pipeline, responders should NOT shut any valves without direction from: (622) Why must responders treat and dispose of absorbents as hazardous materials? startxref A device for damming and diverting liquid on a spill surface has an elongated, pliable dike having a first end, a second end and an exposed surface. (618) C. At any incident involving cryogenic liquids Class B foams are ineffective when used for vapor suppression. 0000205647 00000 n Over-flow dams allow water to flow over the dam by placing a pipe low on the upstream side and high on the downstream side while trapping the contaminant with a low specific gravity (lighter than water/floats on water) at the top of the dam for collection and disposal. C. leak control. divert liquids away from storm drains or other unwanted destinations. After terrorist or criminal incidents Unlike water retaining dams, where the dam wall is usually constructed from concrete or some combination of engineered rock fill . FREE 0. from. The diversity of small-scale irrigation in the Ethiopian Blue Nile basin comprises small dams, wells, ponds and river diversion. Evaluate f(x)f(x)f(x) for values of xxx near 111 to support your conjecture in part (a). Copyright 2021 Action Training Systems | All Right Reserved | Privacy Policy | Terms of Use, Innovative Training Systems for Emergency Responders, ATS The Basics of Rapid Intervention - 3 Title Series on USB, ATS Firefighter I & II - 33 Title Series on USB, ATS The Basics of Rapid Intervention - DVD 3-Title Series, Online Interactive Courses FIRE Catalog, Wildland Urban Interface Firefighting for the Structural Firefighter, Online Interactive Courses EMS/CAPCE Catalog, Online Interactive Courses INDUSTRIAL Catalog. The application of water to a water - soluble material to reduce the hazard? Salinity. A. physically adhere to the adsorbent material rather than being absorbed into its inner spaces. D. Protective clothing can absorb these products and ignite if exposed to an ignition source. 17. No Comments . Login . Cooler fluid goes through the valve bypass, while hotter fluid goes through the system's . 2003-2023 Chegg Inc. All rights reserved. No products in the cart. Commissioners serve six-year terms. DVD: 03 - Diking Diverting & Retaining Spills $ 225.00 Discusses the safety concerns regarding hazardous spill control. What is the difference between damming and diking. (transitive; often foll by up) Diversion is a method of using either a dam (in water) or a dike (on land) to move a product from one area to another. First responders are often asked to clean up a spilled material, and on a daily basis, they probably use the absorption technique on a large quantity of fuel and oil products. Which statement about respiratory protection is accurate? A device for damming and diverting liquid on a spill surface has an elongated, pliable dike having a first end, a second end and an exposed surface. The districts provide flood protection with a combination of dikes, ditches, and/or pump stations. Most PPE inhibits the body's ability to disperse heat and moisture, which can lead to: heat emergencies. (636) B. terrorist attacks. Diking Diking generally involves construction of an earthen wall surrounding a naturally flooded habitat such as a tidal wetland. Diking Districts. Mission-Specific Discusses the safety concerns regarding hazardous spill control. In general, the application rate to control an unignited liquid spill is___________ than that required to extinguish a spill fire. The volume of finished foam that results from a unit volume of foam solution is called? Neutralization and vapor dispersion are: (609). D. control the flow of liquid hazardous materials away from the point of discharge. Hazardous Materials Training by HERRING FETI, Citizens Homeland Defense Guide I The Art Of Survival, Module 8 tactical use of air monitors, american fork fire rescue. B. Under-flow dams are the opposite where a pipe is angled high on the upstream side and low on the downstream side trapping the high specific gravity (heavier than water) contaminant at the base of the dam for collection and disposal. C. positive-pressure ventilation removes atmospheric contaminants more effectively than negative-pressure ventilation. Periodically reviewing records of all PPE inspection, testing, and maintenance procedures is likely to show: patterns about equipment that require excessive maintenance or is susceptible to failure. 0000150578 00000 n dyke ( dak) or dike n 1. Do not sell or share my personal information, 1. Clipping is a handy way to collect important slides you want to go back to later. Home steps to analyze likert scale data in excel diking damming diverting and retention. Which statement regarding doffing PPE after coming out of the hot zone is accurate? C. downwind. - HMN. D. substantially more. Copyright 2023 Rzymskokatolicka Parafia - Wszystkie prawa zastrzeone.Za zamieszczone na stronie materiay tekstowe, audio, logotypy oraz zdjcia odpowiada Parafia pw. Sie suchen nach einem 70413 lego, das Ihren Ansprchen gerecht wird? Rok 2023 na Jasnej Grze to te rok o. Kordeckiego, Ks. Excellent for quickly diking and stopping the spread of larger chemical spills; for diking smaller chemical spills, consider our smaller diameter PIG HazMat Socks . Diking; Size Varies When Filled; 100 bags; $65.00 - $70.00. How about heavy equipment? Which action rarely has practical applications at hazmat incidents in terms of spill control? D. Low-pressure chemical tanks. Not only do they work, they divert, dam and dike! Outlines various spill control options and demonstrates basic procedures for diking, diverting, damming and retaining spills. Now customize the name of a clipboard to store your clips. These small irrigation facilities are important with regard to the size of irrigated land (no reliable figures on irrigation facilities in the Diking, damming, diverting, and retention: (614) A. reduce the emission of vapors at a hazmat incident. Diking, diverting, and retaining spills. HazMat Ch11 1. Work started from Matt Nash's created layer then verified through Assessor's Office files. Do not direct water at spill or source of leak. (b) Many people think that the image in a plane mirror is on the mirror surface. D. gasoline and natural gas fuels. Diking, damming, and diverting are techniques to consider when a spill occurs on the ground or on a waterway. 0000251533 00000 n The highest available PPE should always be used in case there are unexpected hazards. First responders are often asked to clean up a spilled material, and on a daily basis, they probably use the absorption technique on a large quantity of fuel and oil products. B. control air movement using natural or mechanical means. -Poor heat resistance because air to H2O ratio very high. (Civil Engineering) a bank made of earth excavated for and placed alongside a ditch 4. 170 (1) In this section, "development district" includes a district, and every drainage, diking or development district incorporated before January 1, 1965 under any Act except the Water Act. When molecules of the hazardous material physically adhere to the material rather than being absorbed into the inner spaces of an absorbent material is called? . Right-of-way for diking and drainage purposes over state lands: RCW 79.36.540 through 79.36.560. mm/one mm/one mpt166-2 Always follow AHJ SOPs and manufacturer's specifications with regard to serviceability. Click card to see definition Define diking. It requires highly specific foam concentrates for different types of spills. Zapraszamy na caonocne czuwanie Ogie Dwch Serc za tydzie w pitek, 3 marca o godz. A concept used during control and clean-up is borrowed from the nuclear industry: The A. L. A. R. A. A. "This thread is being closed as it is off-topic and not related to the fire industry." D. Blanketing/covering. Use each of the following terms in a separate sentence. %PDF-1.4 % A. boiling liquids. Define diking. without overflowing over top of dam. Diking, damming, and diverting are techniques to consider when a spill occurs on the . Leak control and containment are generally considered _______ actions. Damming- confinement by which barriers are constructed. Diking, damming, and diverting are techniques to consider when a spill occurs on the ground or on a waterway. A. speed and height Which statement about structural firefighters' protective clothing is accurate? endstream endobj 83 0 obj<> endobj 85 0 obj<> endobj 86 0 obj<>/Font<>/XObject<>/ProcSet[/PDF/Text/ImageC/ImageI]/ExtGState<>/Pattern<>>> endobj 87 0 obj<> endobj 88 0 obj[/ICCBased 108 0 R] endobj 89 0 obj[/Indexed 88 0 R 255 109 0 R] endobj 90 0 obj<> endobj 91 0 obj<> endobj 92 0 obj<>stream This includes workers such as firefighters, environmental and conservation personnel, and other public safety personnel. Diversion- barriers are constructed on ground or placed in a WATERWAY to intentionally control the movement. A device for damming and diverting liquid on a spill surface, comprising: an elongated, pliable dike made from an inherently tacky, resilient material and having a first end, a second end and an exposed surface; said exposed surface being inherently tacky so that it may be adhered to said spill surface to prevent flow of liquid past said dike. 0000174299 00000 n Wieldek: Dziecko jest owocem mioci, jak te decyzji, Kuria przestrzega przed lefebrystami i grozi ekskomunik, Dzi ingres bp. Concept - "As Low As Reasonably Achievable." FREE Delivery Across South Africa. When using water streams to disperse gas being released under pressure, the___________ of the water streams must exceed that of the escaping gas. The time required for one-fourth (25%) of the total liquid solution to drain from the foam is called? Diversion Not as permanent as a dike Can be constructed quickly Intent is to protect -Sensitive environmental areas -Other areas that would be adversely affected by the spilled liquid Retention Creates defined area to hold hazardous materials Material is held until clean-up contractor can recover it. D. reduce the amount of contact the product makes with people, property, and the environment. Which process might be used for the temporary mitigation of radioactive and biological substances? It often exposes part of the head and neck. Gross decontamination would most likely be performed on: emergency responders exposed to smoke or products of combustion before leaving the scene of the incident. 0000000016 00000 n C. substantially less Product Control, Image: Courtesy of Captain David Jackson, Saginaw Township Fire Department. (TRT 19:04). D. defensive spill-control tactics aimed at reducing the amount of harm a material causes. 0000001464 00000 n 0000149273 00000 n 2. a ditch or watercourse. 25. Scenario #2 0600, busy traffic corridor of your jurisdiction, Because of the current surge in dam building, we project that by 2030, about 17% of the global river TP load will be sequestered in reservoir sediments. Dams are sub-divided into two categories as well. DVD: 03 - Diking Diverting & Retaining Spills $ 225.00 Discusses the safety concerns regarding hazardous spill control. What is the most serious type of heat disorder? (Civil Engineering) an embankment constructed to prevent flooding, keep out the sea, etc 2. (607-608), C. To determine if the spilled material will adversely affect the equipment. infrastructure including small dams, hand-dug wells, ponds, spring irrigation systems and river diversion systems, as well as traditional irrigation schemes (Deneke et al., 2011). on temperature. D. reduce the amount of contact the product makes with people, property, and the environment. The process of dissolving a gas in water is called? Outlines various spill control options and demonstrates basic procedures for diking, diverting, damming and retaining spills. B. control air movement using natural or mechanical means. Cierpienie a cierpitnictwo. When choosing the type of ventilation to use, remember that: positive-pressure ventilation removes atmospheric contaminants more effectively than negative-pressure ventilation. Diking, damming, and diverting are techniques to consider when a spill occurs on the . The Technician Level dyke. 1. The SlideShare family just got bigger. Free access to premium services like Tuneln, Mubi and more. Where will you get sand or dirt if you needed it? B. mass and velocity How can water be used in flammable and combustible liquid fire control? Minimizing the damage, harm, and effect of fire at a hazmat incident is? Impounding Around Tanks by Diking Exception: Size and spacing requirements for dikes enclosing existing ASTs may be reduced or waived by the Director if he determines that there are equivalent safety measures at the facility.. Diking or a similar system shall be used to provide secondary containment for aboveground tanks in accordance with NFPA 30 section 22.11.1 or 22.11.2, and s. Fire Suppression- Is there something that can be learned from water dams to improve the safety of tailings dams? 29. B. flames surround the tank shell and the shell itself and the liquid become overheated. 11 assistant attorney general illinois phone number; legal 500 arbitration singapore. National Fire Protection Association (NFPA). B. slightly more 82 39 xref A. Dilution How often does your team practice how to dam, divert, dike, and . mission hills country club membership cost, how to remove pay range from indeed job posting, did benjamin franklin help write the declaration of independence, Asia Pacific Journal Of Teacher Education Impact Factor. B. spread a hazardous material over a wide area. xb```e``ia`c` @6G{W-XoCS$eCVNaU2\M8C300Ut s4 Sd1 6XDQ/` a]~fca`SuKQO{YV0,a4 #K'h|wmL@l ` V: Find the perfect diking stock photo. Activate your 30 day free trialto unlock unlimited reading. small-scale irrigation in the Blue Nile basin, Ethiopia}, author={Irit Eguavoen and Sisay Demeku Derib and Tilaye Teklewold Deneke and Matthew P. McCartney and Ben Adol Otto and Saeed Seidu Billa}, journal={Water . Essencia Cosmetico. overpack containers should be compatible with the hazards of the materials involved. If your team was committed to shutting off the leak, do you have others trained to perform containment measures? Responders use dilution more frequently when dealing with: (617) A. corrosive vapor. Tactics aimed at extinguishing fires and preventing ignition of flammable materials? Neutralization and vapor dispersion are: defensive spill-control tactics aimed at reducing the amount of harm a material causes. use of compatible plugs and patches to reduce or temporarily stop the flow 3.0 SCOPE. These definitions are pertinent to this SOP/SOG. Glossary translations. 23. Which method of spill control involves raising or lowering the pH of corrosive materials? To reduce the emission of vapors at a hazmat incident, responders should use: 50 / 66. Looks like youve clipped this slide to already. 32. Explore. epiphyte. Consider: Damming and/or diking. As part of these efforts, the Corps supplied over 11 million sandbags, 141 pumps, 81,000 feet of HESCO barriers, and 70 miles of earthen levees to the Red River basin. Diking, damming, and diverting are techniques to consider when a spill occurs on the . To reduce the emission of vapors at a hazmat incident, responders should use: You must be proficient in donning your PPE because increased familiarity and comfort will lead to: Which statement about nonencapsulating liquid splash protective clothing is accurate? Explains the need to consider both the chemical and physical properties of hazardous materials in spill operations. The breaking up or dispersing of hazardous material that has spilled on a solid or liquid surface? 30. A diking district may improve a portion of the channel of a stream located outside its boundaries.2. During the process of adsorption, the molecules of the liquid hazardous material: (612). To achieve operations level, responders are trained in such HAZMAT/CBRNe defensive techniques such as absorption, damming, diking, diverting, retention vapor dispersion, and suppression. cooler. Dam definition, a barrier to obstruct the flow of water, especially one of earth, masonry, etc., built across a stream or river. We had an auto accident this morning, which ended up being no injuries. 0000251152 00000 n Get this from a library! It can be used as an extinguishing agent. In general, the higher the level of PPE, the greater the: Particulate-removing filters on APRs are used to protect the user from materials such as: Reduce the amount of contact the product makes with people, property, and the environment. Explains the need to consider both the chemical and physical properties of hazardous . 7. When choosing the type of ventilation to use, remember that: (616) Diking, damming, and diverting are techniques to consider when a spill occurs on the ground or on a waterway. Hydrodynamics. chapter 13 : hose ops and hose and hose strea, chapter 15: overhaul, conservation, and scene, chapter 16/17/18/19- building material/struct, Fundamentals of Engineering Economic Analysis, David Besanko, Mark Shanley, Scott Schaefer. Most PPE inhibits the body's ability to disperse heat and moisture. 11 junio, 2022. Tap here to review the details. Outlines various spill control options and demonstrates basic procedures for diking, diverting, damming and retaining spills. 0000055719 00000 n on temperature. Diking, damming, and diverting are techniques to consider when a spill occurs on the ground or on a waterway. C. hydrocarbon spills. . To stop or limit the escape or to contain the release of a product either in its original container or by transferring it to a new one is the goal of: When doffing PPE, what is the last item that should be removed? What organization has established a set of chemical-protective PPE ensembles providing certain protection levels that are commonly used by fire and emergency service organizations? In unserem Vergleich haben wir die unterschiedlichsten 70413 lego am Markt unter die Lupe genommen und die wichtigsten Eigenschaften, die Kostenstruktur und die Bewertungen der Kunden abgewogen. New Orleans uses dikes to move (divert) water through the city. Which statement about choosing PPE ensembles is accurate? Explains the need to consider both the chemical and physical properties of hazardous . The diversity of small-scale irrigation in the Ethiopian Blue Nile basin comprises small dams, wells, ponds and river diversion. 3. by ; July 3, 2022 Zabrodzkiej 7B we Wrocawiu od pon. Responders usually use organic-based materials, such as activated charcoal or carbon, as: Emergency shutoff devices in high pressure tanks are located: on the left front corner of the tank (behind the driver). Which process might be used for the temporary mitigation of radioactive and biological substances? B. spread a hazardous material over a wide area. What is true of Class B foam concentrates? CPC can contribute to heat disorders in hot environments because it: is designed to be impermeable to moisture. Of that $3 billion, nearly $2.5 billion of damages were prevented in the Fargo . D. It can only be used for hydration of responders. Thus, alternate-row diking allows fot retention of half the runoff water from rainfall. An operation check on PPE, communications equipment, and any equipment taken into the hot zone should be conducted: A supplied-air respirator (SAR) used at a hazmat incident must: provide positive pressure to the facepiece.

diking damming diverting and retention 2023