United States Region 10 Environmental Protection 1200 Sixth Avenue Agency Seattle WA 98101 Environmental Emergency Section ~ &ER& Oil and Hazardous Substances Response Manual ------- REPORT Oil or Hazardous Substance Spills, Toll Free Day or Night 800-424-8802 ASSISTANCE Oil and Hazardous Substance Spills Day or Night EPA - (206) 442-1263 Transportation Emergencies Chem-Trec - 800-424-9300 ------- Table of Contents Sgction Page No^ 1 Emergency Reporting and Assistance Telephone No. (Inside Front Cover) ii Table of Contents i 1. Introduction 1 2. Federal Mandate 1 3. Alert Procedures (Telephone No.) 2 4. On Scene Coordination Duties 3 5. Operational Response Phases, I thru V 3 6. Documentation and Enforcement 5 7. Special Considerations 5 a. Safety of Personnel 5 b. Field Gear and Safety Equipment 5 c. Waterfowl Conservation 5 8. Cleanup Chemicals 6 9. Cleanup Techniques 6-45 10. Disposal 46 IT. Environmental Damage Assessment 46 12. Telephone Directory 47 a. EPA '. . . 47 b. Federal Agencies 47 c. States Pollution Control Agencies 49 d. Cleanup Contractors 52 e. Oil Spill Cooperatives • . . . . 52 f. Hazardous Substance Spill Information and Help. 53 13. Technical Data Sources Hazardous Substances 54 a. Oil Sheen Reference 54 b. Table of Elements and Atomic Weights 55 iii. Frequently called names and telep1- ------- INTRODUCTION Federal law mandates that the U.S. Coast Guard (USCG) and the Environmental Protection Agency (EPA) be prepared to respond rapidly to oil and hazardous substances spill emergencies. EPA carries out its inland water responsibility through a coordinated effort by federal and state departments and agencies.This coordinated effort is outlined in the Region 10 Oil and Hazardous Materials Pollution Contingency Plan for the Inland Waters of Washington, Oregon and Idaho. This response manual is a sub-part of the overall Region 10 Contingency Plan. Its purpose is to give the responding federal and state officials a convenient "quick" reference guide of duties, clean- up techniques, and resources that may be called upon to mitigate and control the effects of an oil or hazardous substance spill. Federal Mandate The Congress through the Federal Water Pollution Control Act, as amended in 1977, has declared that it is the policy that there should be no dis- charge of oil or hazardous substances into or upon the waters of the United States. It is the policy of the United States that the spiller assumes complete financial responsibility for removal actions. If the federal on-scene coordinator determines that timely and/or adequate removal actions are not being carried out, then the federal government will initiate removal actions. Removal actions by the federal government will be charged to the owners or operators of the discharging facility up to the liabilities set by Federal Law ($125,000 to $50,000,000). Federal law also requires immediate notification by the owner or operator of an oil or hazardous substance spill. Failure to report the spill is a federal crime and subject to a criminal penalty of $10,000 and/or 1 year in prison. ------- Alert Procedures 1. National Response Center Toll free day or night 2. U.S. EPA day or night 3. U.S Coast Guard National Strike Team (Pacific) 1. States Agencies Idaho, DHW Oregon, DEQ Emergency Services - 24-hour Washington, DOE N.W. Region (Redmond) S.W. Begion (Olympia) Central (Yakima) Eastern (Spokane) 5. Chem-Trec - Transportation Emergencies - Toll free day or night 6. U.S. Coast Guard 13th District Operations Center Seattle Captain of the Port Portland Captain of the Port 1-800-1211-8802 206-112-1263 915-883-3311 8-556-2655 (FTS) 208-381-2133 - day 1-800-452-0311 - toll free (within Oregon only) 503-378-1121 (outside Oregon) 206-885-1900 - 24-hour 206-753-2353 - 24-hour 509-575-2190 - 24-hour 509-456-2926 - 24-hour 1-800-424-9300 206-442-5886 - 24-hour 206-112-1856 - 21-hour 503-221-6330 - 21-hour Note: See telephone directory section for additional telephone numbers. ------- On-Soene Coordination (OSCl Coordination and direction of Federal pollution control efforts at the scene of a discharge or potential discharge is accomplished through the On-Scene Coordinator (OSC), predesignated by regional contingency plans, to coordinate and direct such pollution control activities (see description of Response Phases following this section). These activities include the following: 1. In the event of a discharge of oil or hazardous substance, the first official on the site from an agency having responsibility under the Regional Contingency Plan shall assume coordination of activities under the Plan until the arrival of the predesignated OSC. 2. The OSC, when on scene or through his representatives, shall determine pertinent facts about a particular discharge, such as its potential impact on human health and welfare; the nature, amount, and location of material discharged; the probable direction and time of travel of the material; the resources and installations which may be affected and the priorities for protecting them. 3- The OSC shall initiate and direct aa required Phase II, Phase III and Phase IV operations. Advice provided by the EPA representative on the RRT on use of chemicals in Phase III and Phase IV operations in response to discharges of oil or hazardous substances shall be binding on the OSC, except in cases involving immediate threat to life and property through fire and explosion. iJ. The OSC shall call upon and direct the deployment of needed resources in accordance with the regional contingency plans to evaluate the magnitude of the discharge, and to initiate and to assist in the removal operations. 5. The OSC shall provide necessary support activities and documentation for Phase V activities. 6. In carrying out this Plan, the OSC will fully inform and coordinate closely with the RRT to ensure the maximum effectiveness of the Federal effort in protecting the natural resources and the environment from pollution damage. Operational - Response Phases Phase Groupings. The actions taken to respond to a pollution discharge can be separated into five relatively distinct classes or phases. For descriptive purposes, these are: Phase I - Discovery and Notification; Phase II - Evaluation and Initiation of Action; Phase III - Containment and Countermeasures; Phase IV - Removal, Mitigation and Disposal; and Phase V - Documentation and Cost Recovery. It must be recognized that elements of any one phase may take place concurrently with one or more other phases. The OSC initiates and directs Phases II, III and IV. ------- Phase II - Evaluation and Initiation of Action a. The OSC shall insure that a report of a discharge is immediately investigated. Based on all available information, the OSC shall: (1) Evaluate the magnitude and severity of the discharge; (2) determine the feasibility of removal; and (3) assess the effectiveness of removal actions. b. The OSC shall, when appropriate and as soon as possible after receipt of a report, advise the RRT of the need to initiate further governmental response actions. This may be limited to activation of the RRT, or a request for additional resources to conduct further surveillance, or initiation of Phase III or Phase IV removal operations. c. The OSC shall insure that adequate surveillance is maintained to determine that removal actions are being properly carried out. If removal is not being done properly, the OSC shall so advise the responsible party. If, after the responsible party has been advised and does not initiate proper removal action, the OSC shall, pursuant to section 311(c)(l) of the Federal Water Pollution Control Act, take necessary action to remove the pollutant. d. If the discharger is unknown or otherwise unavailable, the OSC shall proceed with Federally funded removal actions pursuant to section 311(c)(l) of the Act. Phase III - Containment and Countermeasures a. These are defensive actions to be initiated as soon as possible after discovery and notification of a discharge. These actions may include public health and welfare protection activities, source control procedures, salvage operations, placement of physical barriers to halt or slow the spread of a pollutant, emplacement or activation of booms or barriers to protect specific installations or areas, control of the water discharge from upstream impoundments and the employment of chemicals and other materials to restrain the pollutant and its effects on water related resources. Phase IV - Cleanup, Mitigation and Disposal a. This includes actions taken to recover the pollutant from the water and affected public and private shoreline areas, and monitoring activities to determine the scope and effectiveness of removal actions. Actions that could be taken Include the use of sorbers, skimmers and other collection devices for floating pollutants, the use of vacuum dredges or other devices for sunken pollutants; the use of reaeration or other methods to minimize or mitigate damage resulting from dissolved, suspended or emul- sified pollutants; or special treatment techniques to protect public water supplies or wildlife resources from continuing damage. ------- b. Pollutants and contaminated materials that are recovered in cleanup operations shall be disposed of in accordance with procedures agreed to at the State or local level. Phase V - Documentation and Cost Recovery a. This includes a variety of activities, depending on the location of and circumstances surrounding a particular discharge. Recovery of Federal removal costs and recovery for damage done to Federal, State or local government property is included; however, third party damages are not dealt with in this Plan. The collection of scientific and technical information of value to the scientific community as a basis for research and development activities and for the enhancement of understanding of the environment may also be considered in this phase. It must be recognized that the collection of samples and necessary data must be performed at the proper times during the case to fix liability and for other purposes. b. The EPA Regional office will initiate Phase V operations. The OSC shall keep accurate records on a daily and accumulative basis of spi Special Considerations a. Safety of personnel. Actual or potential polluting discharges that could have an imminent and substantial effect on both air and water media can pose serious hazards to personnel health and safety. The OSC should be aware of this potential and should exercise caution in allowing any personnel into the affected area without first verifying the nature of the substance discharged. Regional plans shall identify the sources of information on the hazards, precautions, and personnel protective requirements that will be expected in carrying out response operations. The means for OSC to secure such information also shall be included. b. Field gear and safety equipment. Consideration should be given to carrying the following equipment and clothing when responding to spill scene: 1. Hard hat 8. Absorbent pads 2. "Rubber" gloves 9. Rake 3. Rain gear 10. First aid kit H. Safety boots 11. Road flares 5. "Rubber" boots 12. Portable fire extinguisher 6. Flashlight 13. Tool kit 7. Shovel It. Sampling bottles c. Waterfowl conservation. Oil discharges, particularly in estuarine and near shore areas, often cause severe stress to resident and migratory bird species. The DOT representatives and the State liaison to the RRT shall arrange for and coordinate actions of professional and volunteer groups that wish to establish bird collection, cleaning and recovery centers. ------- Regional Response Center The Regional Response Center (RRC) is located at the U.S. Environmental Protection Agency's offices located at 1200 6th Ave. The Director of the Surveillance and Analysis Division represents the Regional Administrator and serves as the chairman of the inland response team (RRT). The command post for spills will either be at the regional office or a location near the spill site chosen by the on scene coordinator. Chemicals for^Oil^ Spill _C_lga_nuj) The use of chemicals shall be in accordance with Annex X of the National Oil and Hazardous Substances Contingency Plan. a. Dispersants - The Federal OSC on a case-by-case basis can approve the use of chemical dispersants on any spills if it is determined they will prevent or substantially reduce the hazard to human life or substantially reduce explosion or fire hazard to property. All other cases must be approved by the EPA RRT representative after consultation with appropriate federal and state agencies. In all cases, appropriate application rates and methods must be used. (See Table 1). b. Collecting agents - The OSC may authorize use of surface collecting agents on minor, medium and major discharges on a cage-by-case basis if their use will result in the least overall environmental damage or interference with water uses, and greatly enhance removal actions. Collecting Agents. 1. Shell Oil Herder 2. Oil Spill Remover (U.S. Navy) 3. c. Burning agents - Case-by-case basis by OSC with RRT, state and local air pollution control agency approval. General Consideration It is the policy of the EPA that the preferred methods for cleanup and oil removal consists of mechanical means such as sorbents, mechanical oil skimming devices, pump trucks, etc. Cleanup Techniques It is recognized that there are many adequate methods available to mitigate the effects of an oil and hazardous substance spill. The following cleanup methods are offered as a guide to help the federal and other responding personnel in carrying out their responsibilities. A list of general cleanup techniques are shown on Tables 2-6. The cleanup tech- niques are divided into two categories, those for materials that float, such as oil, and those for materials which are for the most part soluble in water. Most hazardous substances fall into the latter category. Field ------- problems associated with hazardous substances can be very complex and may require assistance beyond the scope of this manual. Questions regarding hazardous substances should be referred to the EPA Regional office, or other sources such as the chemical manufacturers, Chlorine Institute, etc. Note: Whenever dealing with oil and hazardous materials, give proper attention to their fire and explosion hazards aa well as the chemicals toxic properties. Safety of the public and responding personnel shall be utmost consideration for the Federal OSC. ------- TABLE 1 EPA ACCEPTANCE LIST - DISPERSANTS 1. 2. 3. i|. 5. 6. 7. 8. 9. 10. 11. 12. 13. 114. 15. 16. Company Shell Oil Company Natural Hydrocarbon Elimination Company Whale Chemical Company Ara Chem, Incorporated GFC Chemical Company Adair Equipment Company, Incorporated BP North America, Incorporated U.S. Navy Proform Prod. Exxon Chemical Continental Chemical British Petroleum MI -DEE Prod. Inc. Name of Product Oil Herder NOSCUM Seamaster, NS-555 Gold Crew Dispersant Atlantic-Pacific Oil Dispersant Cold Clean BP-1 100X Oil Spill Bemover BTO-ALL-PRO Coreexit 952? Conoco Disp. K. BP 11 OOTO Slik-A-Hay Chemical Agent Surface Collector Biological Dispersant Dispersant Dispersant Dispersant Dispersant Surface-Collector Dispersant Dispersant Dispersant Dispersant Dispersant Date of Sep 16, Sep 16, Jun 6, Aug 31, Sept 19 Oct 7, Oct 20, Aug 31, Aug 31, Mar 10, Acceptance Technical Bulletin Issued 1977 Nov 29, 1976 1976 Nov 11, 1977 1977 Nov 11, 1977 1977 Nov 11, 1977 , 1977 Nov 11, 1977- 1977 Nov 11, 1977 1977 Nov 11, 1977 1978 1978 1978 May 11, 1978 April 25, 1978 May 11, Oct 5, 1978 Sept 29, 1978 1978 ------- TABLE 2 CONTROL METHODS FOB SPILLS ON LAND Type Dikes Earthen Foamed Polyurethane 3 Foamed Concrete Excavation Excavation & Dikes Application Or Construction Method Create with bulldozer or earthmoving equipment to compact earth (height depends on earth type) Use trained personnel to construct Use trained personnel to construct Bulldozer or earth-moving equipment - line if pos- sible Bulldozer or earth-moving equipment - line if pos- sible Use Advantages Flat or sloped 1. Material on site 1. surface 2. Construct with com- 2. mon equipment 3- 3- Construct quickly Hard, dry sur- 1. Hold up to several 1. faces feet of water (3) 2. Flat ground 1 . Better adhesion to 1 . Slow moving spill substrates (clay/ shale/grass) 2. Soft ground 1 . Material on site 1 . Natural cavitation 2. Construct with 2. common equipment 3. Soft ground 1 . Heed less space 1 . than separate 2. 2. Material on site 3- 3. Construct with common equipment Disadvantages Natural permeability of soil Seepage through ground Surface composition of soil not suitable in all cases Leaks on wet ground Hard to obtain dispersion device Hard to obtain foam and dispersion device Must set for a time period Will not hold high hydraulic heads (15) Move large amounts of material Natural permeability of soil Surface of soil not suitable in all cases Move large amounts of material Natural permeability of soil Surface of soil not suitable in all cases ------- TABLE 3 CONTROL METHODS FOR SPILLS IN WATER - FLOATING SPILLS Method Booms Weirs Pneumatic Barriers Spill Herding Methods Application or Construction Materials Varies; need deploy- ment device Weir & boat Air compressor diffuser deployment method Chemicals on water spray or prop, wash Use Not too much current Calm Only shallow water To protect shore or other facili- ties Advantages Used on large area; Many varieties Not easily clogged; collects & contains Do not create a physical barrier to vessels Useful in rough water Disadvantages 1. 2. Not Only in waves less 2-4 feet Current speed less than 0.7 knots used in rough water 1. 2. 3- 1. 2. Not in rough water Only shallow water Only thin layers or materials Not easily ob- tainable Not 100* effective ------- TABLE >4 CONTROL METHODS FOR SPILLS IN WATER - SOLUBLE OR MISCIBLE SPILLS Method Sealed Booms Diversion of Uncontaminated Flow Diversion of Contaminated Flow Gelling Agent (40) Containment of Entire Water- - body Application or Construction Materials Boom Device to anchor Earthmoving Equipment Block entrance with sandbags, sealed booms or dikes Gels, Dispersion Devices; use experienced personnel Diking Materials, Earth- moving Equipment Sand- bags, etc., Lining Use Contain depth limited volumes leaking containers Special area where topography is right Special area where topography is right If small volumes For entirely con- taminated area Advantages Contain entire depth 1 . of 1. 2. 1. 2. 1. 2. 1. 2. 3. water 2 . 3. Can put cleaned 1 . water into diverted stream Used for flowing 2. water 3. Can put clean water 1. back into stream Used for flowing 2. water 3 . M. Stop flowing con- 1. taminant 2 . Stop permeation 3. Can allow contain- 1. ment of a large waterbody 2. Materials on site 3. Easily constructed Disadvantages Deployment difficult Hot used for large bodies Difficult to get good seal (16) Difficult to move large amounts of earth Clear area needed Impermeability of ground Difficult to move large amounts of earth Clear area needed Impermeability of ground Adverse environmental impact Hard to obtain Can't use in large area Must haul to dispose Not all waterbodies have containable overflow Permeability May be an unstable condition ------- TABLE 5 CONTROL METHODS FOR SPILLS IN WATER - HEAVIER THAN WATER SPILLS Application or Technique Construction Method Use Advantages Disadvantages Natural Exca- none Where a natural No construction needed Can't control the area which con- vations 4 Dikes barrier exists tains- the spill Construction of Dredges; hydraulic or If bottom can be Material is on site 1. Hard to construct excavations & vacuum pumps moved 2. Stirred up bottom may cause dikes dispersion and increased turbidity. Divers with pumps then place concrete or sand bags around to form dike if bottom material is not sufficient ------- TABLE 6 CONTROL METHODS FOR SPILLS IN AIR Technique Mist Knock down Pans or blowers Method Spray fine mist into air Disperse air by direct- ing blower toward it Use Water soluble or low lying vapors Very calm and sheltered areas Advantages Removes hazard from air Can direct air away from populated areas Disadvantages Create water pollution problem and must be contained In solution 1. Not at all effective if any wind 2. Need large capacity of blowers 3. Hard to control ------- Clean-up Techniques For Floating Materials The clean-up techniques used for floating material can involve either the use of mechanical or chemical means to collect or remove spilled oil or floating hazardous substances. The use of mechanical means such as skimmers, booms and sorbents being the preferred methods. Upon arriving at a spill scene the investigator should observe the physical situation and take appropriate safety precautions if necessary. It is pre- ferable to know the materials spilled before leaving the office. This will allow time to check the hazards of the materials involved in the spill, and what precautions and actions would be required during clean-up operations. The following is a brief sequence of clean-up operations that normally take place during a well organized spill clean-up operation: 1. Alerting all response personnel to spill situation. 2. As soon as possible the source of the spill should be SHUT-OFF. This may be as simple as- closing a valve, or require that a leaking tank be emptied. 3. Contain the spilled material, preferably before it reaches water. This can be accomplished by use of an earthen dam, absorbents, boom, make shift weirs, etc. tt. Clean-up of material from water and land. The preferred method here would be to remove liquids intact, to minimize the disposal problems and allow reclaiming of the spilled material. In some cases this is not practical, and a lot of oil/chemical soaked absorbents and debris is produced. 5. Disposal of waste materials, and oil/chemical soaked debris. 6. Documentation for spill and spill prevention violations. The listed sequence of activities is not a set outline; many of these activities can be going on at the same time. It should be kept in mind that early stoppage of the spill source and quick containment will greatly reduce the scope of the clean-up operations and most likely the environmental damages. Booms Booms are used to contain spills of floatable materials, and to facilitate clean-up operations. Booms can be used to keep the oil and hazardous materials in a small area or to keep these materials out of a particular area. This latter approach is used to protect vulnerable natural resources and private property such as a marina. Generally, booms as a containment device are good in calm waters and will lose their effectiveness in currents above 1 MPH. (See Figures 1 and 2). In situations where the current is above the 1 MPH figure, the boom should be used as a deflection device, moving the oil to a quiet collection area. This is done by placing the boom at an angle to the movement of the float- ing material. This angle being less than 90° and usually smaller than 450. The faster the current, the smaller the angle and the longer length of boom is required. 14 ------- - SKIRT- n n n n n END VIEW SIDE VIEW Figure 1. The basic components of an oil contaminant boom. - Booms are usually susceptible to two kinds of failure while they are deployed: (1) entrainment and (2) splashover. Entrainment is the loss of oil under the skirt, due normally to a combination of increased headwave thickness and water current. Figure 2 illustrates what happens to cause this undesirable effect. WATER FLOW OIL DROPLETS BREAKING OFF ^^•^•^^r— Figure 2. Heavy waves and currents may wash spilled oil under the booms; this type of failure is known as "entrainment." ------- Entrainment can be accelerated by either of two separate events or a combination of external inputs. One event is the increase of water current velocity. This event has a tendency to push the skirt off the vertical and to decrease the amount of entrained oil (Figure 3). The second event is high winds, which can cause a similar loss of vertical integrity, if sufficient freeboard is present, by pushing the top of the boom toward the water surface. Sometimes, the boom may actually lie flat on the water with a subsequent loss of previously contained oil (Figure 4) WIND Figure 3. Entrainment increased due to fast current. WIND Figure *J. Entrainment increased due to high wind with normal current. The problems associated with entrainment can be partially countered by decreasing the angle of the boom to the bank. Problems associated with the effect of wind on boom integrity are completely situational and require individual analysis and deployment of "trade-offs" to maximize containment of the spilled product. ------- The wind and the sea state are primary influences on the second type of failure, which stems from the aplashover of the boom. Splashover is directly affected by boom design, freeboard height, angle of approach of waves to the boom, and the size and interval of the waves. Any combination of these factors causes the oil to go over the top of the boom. The solu- tion, again, is site-specific, and the amount and direction of movement of the boom to minimize this splashover should be determined on a case-by-case basis. In choppy sea conditions, some oil will probably spill over, but there is no need for alarm unless large quantities are being lost. Regardless of the type used, booms can be effective only if positioned or deployed in a manner consistent with local conditions. The most valuable element in boom deployment is a sound working knowledge of local waterways. Knowledge of currents, tides, natural catch areas, water depth, etc., is invaluable in effecting a more rapid response. A second element necessary for timely, effective deployment is the availability of ready support equipment. If the water body is large enough to require a boat for boom deployment, it is important to have available some sort of towing bridle that will place the strain on the tension member. The following examples demonstrate various techniques that are widely used to contain oil with booms under different stream conditions (Figures 5, 6, and 7). The illustrated solution is not always effective. In the case of most rivers, currents usually subside at or near the banks. Because of reduced flow in these areas, some containment can normally be expected nearshore. As can be seen, all of these deployment techniques require the securing of an anchor on the leading edge of the boom. A recommended method for anchoring the boom is shown in Figure 8. Figure 5. Small river with moderate depth of 15 to 20 ft (H.6 to 6.1 m) and slow current of 1.0 to 1.5 kn (1.8 to 2.8 km/h). ------- ANCHOR COLLECTION PIT Figure 6. Small river with moderate depth of 15 to 20 ft. (1.6 to 6.1 m) and moderate to fast current of 3 to 1 kn (5.6 to 7.1 km/h). Figure 7. River of moderate to deep depth and fast current of 76 kn (110.8 km/h). 18 ------- ANCHOR LINE v (RECOMMENDED SCOPE 7x WATER DEPTH) ~ 6-8 FT ANCHOR CHAIN DANFORTH ANCHOR Figure 8. Normal configuration for anchoring booms. Estuaries and bays are usually affected by tides, which create special problems in containment. The change in direction and flow rate of currents can cause contained oil to move away from the boom and be lost. The best solution ia a back-moored boom; that is, oil is allowed to collect in a boom that is deployed in the usual manner and a second boom is then placed on the backside to contain any backflow due to tidal or wind change (Figure 9). INITIAL BARRIER Figure 9. Back moored boom technique for containing spilled oil in tidal- influenced estuaries and bays. ------- EARTHEN DAM Earthen dams are a second type of barrier. This measure is used most frequently on small creek or tributaries, but could be effectively used on slightly larger water bodies if the flow rate is slow (less than 0.5 knots (kn)). Earthen dams are very easy to construct, using a bulldozer, drag- line, or backhoe. The primary objective is to allow the water to pass downstream while containing the oil. Water passes through an inverted siphon or inclined pipe, which is placed below the water surface (Figure 10). OIL WATER FLOW Figure 10. Earthen dam barriers with inverted siphon and inclined pipe for the containment of spilled oil. In summary, it should be remembered that physical barriers, whether booms or dams, are intended to restrict the spread of oil and decrease contamination. With regard to booms, almost anything that floats can be strung together to assist in the endeavor. Items that have been used in the past with varying degrees of success include bales of hay, telephone poles, and 55-gallon drums. In all oil spill situations, rapid response is the key to an effective operation, and containment must be accomplished as soon as possible, using the best available resources. SKIMMERS Assuming that efforts to contain the discharged oil have proved successful, recovery of the spilled oil is then begun. Removal is usually accomplished with the use of mechanical devices called "skimmers." ------- Skimmers, as the name implies, are designed to collect, or skim, the floating product from the surface of the water. Skimmers can be grouped into four basic categories: (1) vacuum or suction type, (2) weirs, (3) dynamic inclined plane, and (4) oleophilic belts, drums, and disks. VACUUM OR SUCTION-TYPE SKIMMERS The suction-type skimmer is a simple device in terms of both design and operation. A suction head and pump are involved, and these devices simply vacuum the oil from the surface of the water. One example of a suction-type skimmer head is called a "duck bill" (Figure 11). The primary advantages of using this device are its adaptability to most environmental situations, its ability to handle almost all types of oils, and the simplicity of operation in most water depths. Its disadvantages include a tendency to become clogged with debris and the need for continual maintenance during recovery operations to prevent clogging and allow efficient skimming. DISCHARGE HOSE OIL RECOVERY ORIFICE Figure 11. Illustration of a suction-type skimmer head for removing spilled oil. WEIR SKIMMERS Weir skimmers are probably the most widely recognized type of recovery device available today. In addition, they are the most widely available type of skimmer for pollution recovery operations. Weir skimmers consist of four primary components: (Da flotation device to suspend the skimmer in water, (2) a reservoir to collect the oil, (3) a device to adjust the skimming level to minimize the quantity of oil entering the reservoir, and (4) some method to empty the reservoir, either by positive displacement pumps or suction (Figure 12). 21 ------- OIL SLICK WATER COLLECTION RESERVOIR SUCTION DISCHARGE HOSE Figure 12. Vertical and lateral views of the components of the weir skimmer. The idea behind this device is commonly referred to as the "waterfall" principle. The collecting reservoir is submerged to the level of the oil/ water interface, at which point, gravity forces the oil into the reservoir, creating a "waterfall" effect. The advantages of this type of skimmer include its high mobility and good recovery efficiency in relatively calm water. The weir is susceptible to being clogged with debris, but a screen can be placed around the unit to minimize this problem. DYNAMIC INCLINED PLANE SKIMMERS Dynamic inclined plane skimmers use an inverted, continuous belt; that is, a belt that runs from high to low, as opposed to normal conveyors which run from low to high (Figure 13). The belt takes the oil below the surface of the water. The oil leaves the belt and floats upward to a reservoir, where it is collected and pumped to a storage container. Like oleophilic skijnmers, which are discussed later, dynamic inclined plane skimmers have good recovery efficiency and are available in a variety of sizes. Both types have restrictions on maneuverability and loss of -efficiency when trash or debris is present. ------- Figure 13. An illustration of the dynamic inclined plane skimmer in operation. OLEOPHILIC SKIMMERS oleophilic recovery devices is the passing of the "absorbing" material continuously through the spilled oil. The oil adheres to the surface and is removed from the water. At this point, the oleophilic member is wiped or squeezed by rollers on blades and the oil is deposited in a reservoir. •The product in the reservoir is then pumped into some type of holding container. Oleophilic skimmers are the most sophisticated recovery devices available today, usually employing several different mechanical systems, which require varying levels of preventive maintenance and highly trained operators for use. The rotating disk, or drum systems, as shown in Figure 14, are noted for very efficient recovery of oil in deeper water where little or no debris is present. Available in various sizes, the large models normally require extensive logistic support. The most widely used oleophilic skimmers are of the belt and rope ? type. These devices operate very efficiently in both thick and thin slicks, and are usually capable of recovery sheens. Their ability to remove oil mixed with small amounts of debris remains almost as efficient as debris-free environments. Because oleophilic belt skimmers require the use of some sort of vessel for staging and employment, they are difficult to operate in close quarters or in shallow water. Figure 15 shows a typical "continuous belt" installation. The oleophilic rope employs the same basic principle as the "belt"; i.e, a continuous process of "a-bsorption" by the oleophilic component, squeezing by a roller or wiper system, and reentry into or upon the oil in the water. ------- ROTATING DISKS FIXED_WIPER COLLECTION TROUGH OIL Figure 14. Oleophilic drum skimmer. COLLECTION POINT OIL PICKUP Figure 15. A continuous-belt oleophilic skimmer for recovering spilled oil on the surface of the water. ------- Booms made of absorbent material can be used to contain the spilled material and to pick up the spilled material. This type of set-up requires attention to insure that the boom is still effective and not completely soaked with the spilled chemical. Hazardous Substances Clean-Up Techniques Hazardous Substance Spill Response and Treatment The safety of the people responding to hazardous spill situations is critical and must be considered before any action is taken. When the identity of the spilled material is unknown, general safety precautions should be taken. All spills must be treated as extremely hazardous prior to their identification. If it is necessary to work in the immediate vicinity of spilled material, wear a self-contained breathing apparatus and protective clothing. If this equipment is not available, then the following general precautions should be taken: 1. Always approach a spill from upwind 2. Avoid direct or indirect contact with spilled material 3. Remove all ignition sources 4. Restrict access to area 5. Obtain assistance GENERAL INFORMATION First and most important in the handling of hazardous materials is the identification of shipments considered hazardous. Alerting of personnel to the hazards to which they may be exposed is accomplished directly or indirectly by descriptive data in shipping documents and on containers, and/or by package labels and vehicle placards. Emergency personnel should always be aware of the hazards that are asso- ciated with the transportation of hazardous materials. Because non-hazar- dous and hazardous materials are shipped in containers that are similar in appearance, it is essential that hazardous materials cargo are clearly identified and the inherrent dangers of the shipments are easily recognized and continually emphasized. Transportation emergencies involving hazardous materials fortunately are rare; however, when accidents do occur, the need to quickly identify the material is obvious. At the scenes of accidents, emergency personnel must not only exercise caution to prevent being injured, but they must also initiate measures without delay to protect the public. The potential hazards must be known. Therefore, accurate materials identification is imperative. ------- Every vehicle should be considered to be a hazard because of the material it may be carrying, even though it is not placarded. The reason is the law does not require vehicles carrying certain materials be placarded, even though they may be extremely dangerous under certain circumstances. (For example, hair spray usually considered to be relatively harmless, is very flammable and explodes when subjected to heat.) There are numerous other products, when packed under pressure in aerosol cans, which are potentially dangerous. In case of an accident or spillage, the first person at the scene should ascertain from the driver of the vehicle, conductor of train or pilot of Police and fire department personnel, if necessary, should evacuate all people from the danger area and keep all people at a safe distance from the accident or fire unless they are required to combat the fire or help handle the accident. If a vehicle carrying flammable liquids or compressed gas is wrecked, do not drive your car near the wreckage as it may cause the material to ignite. Keep fires, open flames, lanterns or flares, lighted cigarettes, cigars and pipes away from .the scene. Warning signals should be set-up to prevent further accidents. It is recommended that flame producing signals (flares, fusees, or open flame lanterns) not be used when an accident involves dangerous material of any type. The use of flame producing signals is specifically prohibited by the Department Of Transportation for any cargo tank vehicle used for transporting flammable liquids or flammable compressed gas and for any vehicle transporting explosives, Class A or B. Prevent leaking liquids from draining onto the highways or into sewers and streams by damming up the liquid or by digging a drainage trench, etc. Tipped containers that might be leaking should be set upright, if possible. Powdered materials should be covered with a blanket, dirt or other material to prevent blowing about. Traffic and spectators should be kept away from the accident. Do not let vehicles stop in, or pass through, the area of spilled materials. Should any of the material being transported get on your skin or clothing, you should remove it as soon as possible by washing. You should then try ------- to identify the material as soon as possible and contact the local or State Health Department to see if there is a potential danger and if so, how to handle the situation. Something that may not seem dangerous could have serious side effects. For example, materials which come into contact with your pants leg may not cause illness or discomfort to an adult, but later in the home, a small child coming in contact with the contaminated clothing could be made seriously ill or killed. For this reason, it is IMPERATIVE that you find out how the material should be treated. You may have to remove your clothing outside so that your home or office does not become contaminated and cause unnecessary illness or death. If in doubt, remove contaminated clothing before entering a building and shower as quickly as possible to remove any contamination that may be on the skin or in the hair. If hazardous or toxic vapors are escaping from a spill, it is best to take action to evacuate people from the area downwind from the spill until the spill has been cleaned up. HAZARDOUS MATERIALS DEFINITIONS The following definitions have been abstracted from the Code Of Federal Regulations, Title 19-Transportation, Parts 100-199- Refer to the referenced Sections for complete details. Cla a 3 i f ica; tion Definitlong Explosives Any chemical compound, mixture, or device the primary or common purpose of which is to func- tion by explosion, i.e., with substantially instantaneous release of gas or heat, unless such compound, mixture, or device is otherwise specifically classified in Parts 170-189 of this chapter. (Sec. 173.50) Class A Detonating or otherwise of maximum hazard. There are nine types of Class A explosives all defined in Sec. 173-53- Class B In general, function by rapid combustion rather than detonation and include some explosive devices such as special fireworks, flash powder, etc. Flammable hazard. (Sec. 173.88) Class C Certain types of manufactured articles contain- ing Class A, or Class B explosives, or both, as components but in restricted quantities, and certain types of fireworks. Minimum hazard. (Sec. 173.100) Flammable 'Any liquid having a flash point below 100 P. Liquid (37.8° c) as determined by tests prescribed in Section 173-115 ------- Classification Definitions Pyrophorlc Liquid Any liquid that ignites spontaneously in dry or moist air at or below 130 degrees P. (Sec. 173.115) Combustible Liquid Any liquid having a flash point at or above 100 F. (37.8°C.), and below 200°F. £93.3°C). (Sec. 173.115) Flammable Solid Any solid material, other than an explosive, which is liable to cause fires through friction, absorption of moisture, spontaneous chemical changes, retained heat from manufacturing or processing* or which can be ignited readily and when Ignited burns so vigorously and persistently as to create a serious transportation hazard. (Sec. 173-150) Oxidizing Material Corrosive Material Compressed Gas Flammable Compressed Gas Poisons Class A A substance that yields oxygen readily to stimulate the combustion of organic matter. (Sec. 173-151) Any liquid or solid that causes destruction of human skin tissue or a liquid that has a severe corrosion rate on steel or aluminum. (Sec. 173-240). Any material or mixture having in the container pressure exceeding 10 psi at 70 F. or, having an absolute pressure exceeding 101 psi at 130°F. (Sec. 173-300) Any flammable material or mixture having in the container a pressure exceeding 10 psi at 100°F. (Sec. 173-300) Extremely dangerous poisons. Poisonous gases or liquids of such nature that a very small amount of the gas, or vapor of the liquid, mixed with air is dangerous to life. (Sec. 173-326) Less dangerous poisons. Substances, liquids or solids (including pastes and semi-solid)t other than Class A or Class C poisons, which are known to be so toxic to man as to afford a hazard to health during transportation; or which in the absence of adequate data on human toxicity, are presumed to be toxic to man. (Sec. 173.3^3) ------- Classification Definitions Irritating A liquid or solid substance which upon contact Material with fire or when exposed to air gives off dan- (Formerly Class C gerous or intensely irritating fumes, but not Poison) including any poisonous material, Class A. {Sec. 173.381) Etiologic Agent An etiologic agent means a viable microorganism, or its toxin which causes or may cause human disease. (Sec. 173.386 Refer to the Department of Health, Education and Welfare Regulations Title *12, CFR, Sec. 72.25(c) for details.) Radioactive Material Any material, or combination of materials, that spontaneously emits ionizing radiation, and having a specific activity greater than 0.002 microcuries per gram. (Sec. 173'389) NOTE: See Sec. 173.389(a) thru (L) for details. The following is offered as a working definition only as this material is not presently defined in Title H9. Cryogenic Material Extremely low temperature gaseous material transported as a liquid. Maintained in liquid form by low temperature rather than pressure. Spill Assessment Establish the type of spill - The first step is to determine what type of spill is involved by identifying the source of the spill. The following types of spills are possible: a. Trains 1. 2. Tank car Box car Trucks 1. Tank 2. Trailer Ship 1. Dry Cargo 2. Tank Ship 3. Com. Pass. Vessel U. Fishing Vessel 5. CG Vessel 6. Pleasure Craft 7. Tugboat 8. Unidentified Pipeline 1. Offshore 2. On ahore Storage Tank 1. Offshore 2. On shore c. Bus d. Aircraft 1. Cargo 2. Passenger Things to look for at spill site: 1. Are hazardous placards on labels visible on vehicle or container? 29 ------- 2. If so, what are contents identification, warning or relating to dangers (poisonous explosive, etc.}? 3. Identification numbers on tank cars, trucks, etc. l(. Is waybill, shipping papers available from conductor, driver? Record easily visible physical properties - Observation of the following properties of the spilled material can confirm an identification or pos- sibly identify the specific chemical involved. However, the OSC must approach the spill cautiously and not endanger himself and others in determining the characteristics. If a certain physical property cannot be readily identified, gather other information that can safely be obtained. 1. What is the spill state: a. Solid (power, pellet, granular) b. Liquid c. Gas 2. Is there a noticeable odor from a safe distance? Pleasant - almond, ammonia, benzene, fragrant, lysol, vinegar, sweet. 3. What color is it? 4. Is it turbid? Opaque - Clear - Cloudy - Other - 5. If it is in water, does it float sink mix (soluble) not mixed 6. Does it cause your eyes to water? 7. Is it fuming flaming foaming or is a gas being given off or is another noticeable reaction occurring? ------- Magnitude of the Spill - The OSC can establish the magnitude of the spill by answering the following questions: 1. What number, type, and size of individual containers have spilled the material? 1. 2. 3. il. 5. 6. 7. Metal drums Fiber drums Bags Paper Polyethylene Cylinders Carboys Boxes Type Other approx. approx. Length Length Length Diameter Length height diameter height diameter Width Width Width Height Width Height Height Height Height Dimensions 2. If large tank trucks or cars or barge and ship holds are involved, the approximate size can be estimated by pacing off a similar distance at a remote location. Size X X Often the tank cars and trains are labeled so the capacity should be recorded gal. Available technical data: a. OHM TADS - EPA b, Chris Manuals - U.S.C.G. c. Fire Protection Guide on Hazardous Materials - NFPA d. Hazardous materials - Emergency Action Guide - U.S. Department of Transportation e. Chem-Tree f. Chemical Manufacture SAMPLING PROCEDURES The collection and subsequent analyses of samples is important in evalua- ting the progress of the spill cleanup. Therefore, it is also important to collect samples as soon as possible after the spill occurs for spill iden- tification and assessment and for later use as evidence. Likewise, it is ------- important to collect samples at the beginning of and during the cleanup operation to document the progress of the cleanup. The general sampling methodology described here may be applicable to all situations, although the EPA "Field Detection and Damage Assessment Manual" should be used as a guideline when samples are to be collected specifically for assessment or enforcement purposes,. Method of Sampling There are two methods of sample collection: automatic and manual. "Auto- matic" refers to the use of an automatic sampler to collect samples while "manual" refers to collection of samples by a person at the scene. Samp- ling at the scene of a spill will usually be performed manually because of the emergency and temporary nature of the situation. Also, the presence of personnel on the scene may make it convenient and economical to take manual samples. Guidance on selection and use of automatic samplers can be found in other publications. The following discussion will assume manual sample collection although the theory could also apply to the use of an automatic sampler. Type of Samples There are two types of samples which can be collected for analysis: 1. Grab (discrete samples). 2. Composite samples. Grab or discrete samples characterize the water quality at a particular instant in time. The purpose of a composite sample is to mix discrete samples in such a way to represent the average characteristic over a period of time. In addition to generating an average value, composition is often done to reduce the analytical load placed on the laboratory. The choice of the type of sample should depend on the objective of the sampling and the variability of the water. If the variability of the parameter of interest is low (that is, if the concentration of the para- meter of interest changes little over time), then a grab sample may charac- terize the quality adequately. On the other hand, if the variability is high, then a composite should be formed from grab samples taken at short intervals, or the grab samples themselves should be collected and analyzed. If nothing is known about the variability of the water, then grab samples should be collected and analyzed initially to determine the variability of the water. Judgment will have to be exercised in terms of the allowed variability. If a single sample or a small number of samples are to be used it is imperative that the contents be thoroughly mixed prior to sampling or in the case where quiescent conditions must be maintained, a number of samples at various locations throughout the process container should be taken. 32 ------- Sample Containers Samples must be taken into appropriate sample containers to reduce the possibility of contamination or adsorption which will yield incorrect results. The container must be completely clean and equipped with a tightly fitting cap. Organic hazardous materials must be contained in a glass jar or bottle to reduce adsorption to the container walls. Specifi- cally, oils and grease, pesticides, or even short chain organic compounds should be placed into glass containers. Other materials such as metallic salts, can be stored in plastic containers with no adverse effect. Sample containers should be provided from the nearest analytical laboratory to insure use of the proper type or, if necessary, the bottles can be pur- chased from a local bottle supplier. If possible, use wide mouth con- tainers with a lined cap except where interaction between the sample and cap material must be modified. (Then use narrow necked containers). If commercial sample bottles can not be obtained, wide mouth canning jars can be used if an aluminum foil liner is provided. Where a plastic container is applicable, distilled water can be purchased, the bottles emptied and the containers used when no other bottles are available. However, the use of these bottles is not recommended without specific instructions from the OSC. To clean sample containers prior to reuse, the following procedures has been found to be effective: 1. Wash containers and caps with non-phosphate detergent and scrub strongly with a brush. 2. Rinse with tap water, then distilled water. 3. Invert to drain dry. 4, If additional cleaning is needed, rinse with sulfuric acid, tap water and distilled water. In certain cases, samples bottles are further rinsed with chemicals to remove traces of materials left by previous samples. These procedures are outlined as follows: 1. Acid Rinse: If metals are to be analyzed, rinse the container with a solution of one part nitric acid to four parts water, then with distilled water. If phosphoruses to be analyzed, rinse the container with a solution of one part hydrochloric acid to one part water followed by distilled water. 2. Solvent Rinse: If oil and grease or pesticides are to be analyzed, rinse the sample container with hexane, then acetone, and distilled water. The container should have been previously cleaned with-acid solution. Treat the container caps similarly. ------- For long term monitoring, however, the analytical laboratory performing the analyses should provide prepared bottles for sampling. Sample Preservation and Identification The purpose of sample preservation is to maintain the constituents of interest in the same concentration as when the sample was collected'. Even with preservation, the concentrations of the constituents may be a func- tion of the time between sample collection and analysis. Therefore, for any given preservation method,a maximum holding time is also specified. Other factors related to preservation that may affect the integrity of the sample include the type and material of the sample container, sample iden- tification, and the chain of custody for sampling handling. For the pre- liminary or initial sampling, icing or refrigeration of the samples should be adequate. While not effective for all parameters, icing or refrigera- tion is recommended as a standard technique since it comes closest to being a universal preservative and does not interfere with any analyses. The use of ice cubes and an insulated chest is usually an effective and convenient method for storage and transport of samples. For a long term sampling program or for process monitoring samples, the laboratory performing the analyses should be consulted for specific instructions regarding preservation techniques and sample containers. Sample Identification Once the sample is taken, certain procedures must be followed to allow the identification of the sample and to record the chain of custody. It is important that these techniques be standardized and become a part of normal field procedure. Each sample should be assigned a unique number to allow easy identifica- tion in the field and the laboratory. It is important that the number include relatively few digits so that it will not be abbreviated during successive handling. It ia recommended that each person who samples be assigned a roll of peel-back labels. These labels would include the person's initials and sequential numbering. As a sample is taken and sealed, a number will be affixed to the bottle. The label would include sufficient space for added information such as date, preservative added, etc. Then the specifics regarding the sampling location, type of sample, and other pertinent facts would be recorded in the field notebook. Chain of Custody In cases of litigation, there must be proof of the chain of possession that occurs from the time of sample collection to final destruction. If a sample cannot be traced completely, the validity of the analytical result may be doubtful. Therefore, it is important that procedures for a written record of chain of custody be included as normal field practice. A person has custody of a sample if one of the following requirements is fulfilled: 1. It is in his actual physical possession. 2. It is in his view after being in his actual physical possession. 34 ------- 3- It was looked up by him after being in his physical possession. 4. It was kept in a secured area, restricted to authorized personnel after being in his physical possession. When the sample leaves his custody, then a record should be made indicating that this has been done. RECORDS The Importance of keeping written records cannot be emphasized too strongly. As documentation of the events surrounding the spill and its cleanup, these written records may have important legal implications particularly in cost recovery or reimbursement. The records may also serve as a learning tool in that the knowledge gained from the spill can be applied to future spill situations. It is a good practice after the spill is cleaned up, and the emergency is over, to go back and assess the measures taken at the scene. Evaluation of this sort is important in improving response techniques. A record of the progress being made in the cleanup is also important in making decisions at the scene of the spill. It is recommended that the OSC keep in a permanent bound book a log or .diary of the chronological events from the time of notification of the spill until the cleanup and his duties are completed. All events of any significance should be recorded in the log with notation of the spill until the cleanup and his duties are completed. All events of any sig- nificance should be recorded in the log with notation of the date and time. The information should include records of flow, operation, main- tenance, sampling, fuel used, problems encountered, telephone conversa- tions, meetings held, orders issued, weather observations, etc. The log should be kept in a bound, sequentially numbered notebook. Entries should be made in the log immediately and the date and time indicated. No pages should be removed from the notebook. If a page is ruined, it should be marked "VOID". Important observations involving judgment and sampling records should be signed by the principal investigator and countersigned by a witness. The important records that should 'be kept in the notebook can be listed as follows: 1. General events - for each day start/stop times for cleanup activities, arrival or procurement of equipment, documentation for authorization, weather observations. 2. Treatment - gallons treated by each process, hours of operation of each process, maintenance needed and/or performed, fuel used, equipment breakdowns, ultimate disposal. 3. Sampling - records of sampling, sample preservation methods, .and destination and analyses required of samples. ------- 4. Personnel - a record of all personnel on site, their function, and the actual times present should be recorded. This is especially important for those personnel, whether from a government agency or third party contractor, associated with the cleanup/treatment operation itself. It is imperative that the OSC develop a rigid communication network with the person in charge of the cleanup/treatment operation so that the OSC knows at all times that status of each operation and the personnel attending the respective operation. WASTEWATER TREATMENT METHODOLOGY FOR HAZARDOUS SUBSTANCES The general procedure for treatment of hazardous spills is shown in Figure 16. Candidate treatment schemes for the control and disposal of hazardous materials are as follows: carbon absorption-A, filtration-F, ion exchange-IX, reduction-R, oxidation-0, gravity separation-S, precipi- tation-P, neutralization-N, dilution-D. These treatment schemes can be achieved either in a batch mode depending on the hazardous materials containment or in a flow through process. Consideration should also be given whether the material can be discharged to a municipal treatment plant without creating a major upaet. This may be prior to or following treatment of hazardous materials on site. Alao, due to the high solu- bility of most hazardous substances, success of any treatment scheme is dependent on quick containment of the spilled materials. See Tables 2-6 in the general clean-up section (Pages 9-13)- Filtration Filtration is designed to remove particular matter by passing the contaminated water through a layer of porous media such as sand. The treatment may be employed as a pre-treatment prior to passing 'the water through a carbon column or ion exchange system or as a polishing step for removal of a particulate after a chemical reaction. While various types of media are used in filtration a simplified mode for field application would generally consider a gravity or pressure flow dual media filter column. During a filter run, the head loss will gradually increase due to accumulation of solids within the filter media. When the head loss reaches the limit set by the hydraulic conditions of the filter design the filter run will stop and the filter is backwashed. In some cases the effluent quality from the filter may control the termination of the filter run. Filters may be backwashed with sorted filter effluent, in which case the backwash waste after removal of a suspended solid is retreated and refiltered. In situ filtration may involve permitting water to pass by gravity through a built-up sand or coal bed. Continuous filtration will usually involve bringing in a portable filter for direct application at the site. The basic components of a typical filter are shown in Figure 17. Carbon Adsorption Carbon adsorption is a physical phenomena which removes organic matter and some inorganic chemicals from water. These chemicals are physically adsorbed on the large surface area of the carbon (500-1,000 m^ per 36 ------- SPILL HANDLING THOUGHT GUIDE FIGURE 16 ------- gram). Activated carbon is produced from many materials including wood, coal, lignite, etc. The adsorption process and its effectiveness is dependent on the nature of the material being adsorbed and of the type of arbon used. In general concentrations of greater than 1,000 mg/1 of a ontaminant requires excessive detention times and excessive quantities of arbon. The amount of carbon needed to adsorb a given chemical must be stablished by field testing. When the capacity of the carbon has been xhausted the carbon must be replaced and the spent carbon disposed of. Table 7 gives general guidelines for the adsorbability of various organics on activated carbon. In situ use of carbon would generally consider the addition of powdered activated carbon directly to the spill site. Effec- tive mixing of the carbon with the contaminated water in question is essential for effective adsorption to occur. Off-site treatment would involve pumping the contaminated water through a granular carbon column. Ion Exchange Ion exchange is a process in which ions held by electrostatic forces to functional groups on the surface of a solid are exchanged for ions of a different species in solution. The process takes place on a resin which is usually made of a synthetic material. Various kinds of resin are avail- able including weakly acidic and strongly acidic ion exchange resins and weakly and strongly basic ion exchange resins depending on the application involved. The ions are exchanged until the resin is exhausted and then the resin is regenerated with a concentrated solution of ions flowing in a reverse direction or replaced with new resin. The amount of resin required must be established by chemical tests done on the wastewater for the ion content of interest. The .best type of resin is established mainly by the specfic contaminant to be removed, the amount of wastewater Involved and other ionic demands on the resin. Ion exchange treatment can be accomp- lished by off-site pumping of the wastewater in question through an ion exchange column with the ability to either regenerate or replace the resin when it becomes exhausted. In situ treatment in a manner similar to carbon would involve mixing the resin with the wastewater in question in a suitable containment area. Gravity Separation Gravity separation involves removal of suspended solids with a specific gravity greater than water by the process of sedimentation or particles with a specific gravity less than water by flotation. Sedimentation is removal of solid particles from a suspension through gravity settling. size and shape, density and viscosity of the water, and the" presence o other materials in the water. The rate of settling while predictable using theoretical equations should employ a field testing procedure. While sedimentation may involve the removal of hazardous solid materials it is most often associated with the coagulation process. Flotation is used to separate the materials with a specific gravity less than water. The contaminant rises to the top and is skimmed off periodically. ------- Table 7- INFLUENCE OF MOLECULAR STRUCTURE AND OTHER FACTORS ON ABSORBABILITY 1. An increasing solubility of the solute in the liquid carrier decreases its adsorbability. 2. Branched chains are usually more adsorbable than straight chains. An increasing length of the chain decreases solubility. 3. Substituent. groups affect adsorbability: Substituent Group Nature of Influence Hydroxyl Generally reduces adsorbability; extent of decrease depends on structure of host molecule. Amino Effect similar to that of hydroxyl but somewhat greater. Many amino acids are not adsorbed to any appreciable extent. Carbonyl Effect varies according to host molecule; glyoxyllc and more adsorbable than acetic but similar increase does not occur when introduced into higher fatty acids. Double bonds Variable effect as with carbonyl. Halogens Variable effect. Sulfonic Usually decreases adsorbability. Nitro Often increases adsorbability. ^. Generally, strong ionized solutions are not as adsorbable as weakly ionized ones; i.e., undissociated molecules are in general preferentially adsorbed. 5. The amount of hydrolytic adsorption depends on the ability of the hydrolysis of form an adsorbable acid or base. 6. Unless the screening action of the carbon pores intervene, large molecules are more sorbable than small molecules of similar chemical nature. This is attributed to more solute carbon chemical bonds being formed, making desorption more difficult. 39 ------- Neutralization Neutralization is a process in which hydroxal or hydrogen ions are added to a solution to produce an approximately equal concentration of ph7. The process is used to reduce the acidic character of a spilled chemical by addition of caustic soda (NAOH,-lime/(Ca(OH)2) or soda ash (NAgCO^). Alkaline wastewaters are neutralized by the addition of hydrochloric acid (HCL), sulfuric acid (H2SOi;). Strongly basic NAOH, strongly acidic HaSOij and HCL must be added very carefully to avoid creating a violent reaction. Complete mixing of the contents is especially important to avoid pockets of strong chemicals in the liquid. The other neutralizing agents are considered weaker acids and bases and react slower than the strong acids bases. The amount of neutralizing chemical required should be determined by a bench scale test. Coagulation Precipitation Coagulation precipitation is a process which removes pollutants by reacting these materials to form an insoluable product. (See Figure 18.) This process results in a reaction rather than physical adsorption. There is a series of steps to allow effective precipitation, (1) chemical addition, (2) rapid mix, (3) addition of coagulant, (4) flocculation, (5) sedimentation and in some cases (6) filtration as shown in Figure 17. Each precipitation reac- tion may not require all of these steps. Precipitation is used to remove many types of metal cautions and some anions such as fluorides and sul- fides. The agents involved in precipitation reaction include calcium, sodium hydroxide, sodium bicarbonate, sulfate and sulfide. These chemi- cals are added at a certain pH. The amount of chemicals required to precipitate a particular constituent are determined by running a bench scale test. Coagulation involves the addition of a coagulant such as ferric chloride, aluminum sulfate or organic polyelectrolytes in order to precipitate specific wastewater constituents. Ferric Chloride As Coagulation Aid This compound is effective in clarifying both organic and inorganic suspensions. The final pH should be above 6 for the best results or caustic soda may be needed to control pH. Large suspensions require dosages of approximately 50-500 mg/1 although larger doses may be needed for very high concentration or alkaline suspensions. If the wastewater is low in alkalinity, lime may be needed to raise the pH to 6 or higher. Excessive dosage of ferric chloride will result in a brown colored effluent which should be avoided. Alum As Coagulation Aid Aluminum sulfate (Alum) is effective in clarifying both inorganic and organic suspensions. pH can usually be controlled in a range of 6.5-7.5, and this control is generally crucial for good alum use. If a suspension is to be treated alum dosages of 100-1,000 mg/1 should be effective. Huge dosages may be needed for concentrated or highly alkaline suspensions. As with ferric chloride suspensions with low alkalinity may require addition of lime or caustic soda to produce the final pH range of 6.5-7.5. 40 ------- WATER LEVEL INFLUENT EFFLUENT TRANSFER PIPE RECYCLE EQUALIZATION TANK TYPICAL AUTOMATIC GRANULAR MEDIA FILTER FIGURE 17 ------- MECHANISM OF COAGULATION SEDIMENTATION- TIME MIXING INTENSITY MECHANISM FIGURE 18 ------- Organic Polyelectrolytes As Coagulation Aid Polyelectrolytes are available in cationic, anionic or nonionic, form and may be effective alone when flocculating suspensions of inorganic materials. These polyelectrolytes are usually not effective alone for flocculating organic suspensions, but can be used in conjunction with alum or ferric chloride. Polyelectrolyte dosages vary with both the type of charge on the polymer and the type of suspension to be treated. Cationic polyelectrolytes are generally added in higher dosages 1-10 mg/1 in dilute suspensions while anionic and nonionic dosages are added approximately at 0.5-5 mg/1. When the solution is concentrated and the suspension concentration is greater than 1,000 mg/1 add 1-300 mg/1 of cationic polyelectrolyte or 1-100 mg/1 of anionic or nonionic compound. Reduction Reduction reactions are only applicable to a small number of compounds. Sodium bisulfite has been recommended as the most suitable reducing agent. However, other chemicals including sodium sulfite and sodium metabi sulfite can also be used. Reduction Is used as a pretreatment for chrome compounds to change them to the chromous state for precipitation. This reaction must occur at low pH, so adjustment to pH 2 to 3 with acid is recommended. Reduction is also used for either sodium or calcium hypochloride. A reducing agent can be added until an acceptable chlorine residual is measured. Excess reducing agent can be removed by addition of more wastewater or aeration. Determination of the amount of reducing agent, i.e., sodium bisulfite or its equivalent is determined by a small bench scale testing procedure. Oxidation Oxidation reactions are more common than reduction and more agents can be used. Chlorination and aeration are two ways to oxidize materials. Chlorination reactions are the most commonly used to oxidize cyanide to the less toxic cyanate and then to the carbon dioxide and nitrogen. These reactions are most effective at alkaline pH so both sodium hydroxide and hypochlorite are commonly added. Chlorine is more safely added in the form of liquid hypochlorite in concentrations of 5-6%. Dosages are determined by a bench scale test. Aeration is another method for oxidation. Air can be used as an oxidizing agent and is more available, but not as strong as chlorine OP chlorine compbunds. In general, air is introduced in the form of bubbles which rise to the surface. As they travel through the water column the oxygen in the air is transferred through the bubble and into the water where it can'oxidize the hazardous compound. This technique is only useful for easily oxidized materials. ------- Table 8. TREATMENT CHEMICAL IKFOHMATIOH Chemical Ferric Chloride Alum Polyelectrolytea Alum & Poly Ferric chloride Use Strength organic 25-100 mg/ml inorganic solution organic 25-50 mg/ml inorganic solution inorganic 0.5-U solutions: inorganic/ organ ics to increase strength of floe inorganic/ — organ ics to increase clarity Common dosage, mg/1 1000 mg/1, 50-500 mg/1 +• lime to pH 6 or or greater 1000 rag/1, SS 100-1000 mg/1 + CaO or NaOH to pH 6.5 to 7.5 SS 1000 mg/1 1-10 mg/1 SS 1000 mg/1 1-300 mg/1 SS 1000 mg/1 0.5-5 mg/1 SS 1000 mg/1 1-100 mg/1 SS 1000 mg/1 0.5-5 mg/1 SS 1000 mg/1 1-100 mg/1 Alum 100-1000 mg/1 Poly 1-10 mg/1 Ferric 50-500 mg/1 Poly 1-10 mg/1 Field mix time3 complete dispersal of chemical (approx. 2-5 min). Complete dispersal of chemical (approx. 2-5 min). complete disper- sal of chemical: (approx. 1-2 min) . complete diaper- sal of chemical (approx. 1-2 min) then poly & mix about 1 min. complete disper- sal of ferric (approx. 1-2 min) then add poly & mix about 1 min Field floe time» 5-15 min 5-15 min 5-10 min 2-5 min 5-10 25- min 5-10 min * If required flocculation time exceeds the maximum time, try a higher chemical dosage. ------- Table 9. CHEMICAL REACTION OPERATING PARAMETERS Process Chemical Sedimentation Neutralization Precipitation Oxidation Aeration Reduction Type Rapid Flocculation Rapid Rapid flocculation none Rapid Air mix Rapid Mixing Time 1-5 min 5-15 min depends on rate and process height 10-30 min Use 30 min for lime addition 1-5 min 5-10 min 30-60 depends on rate and process height 10-30 Depends on test 10-30 Endpolnt Clarified water and good settling Add to pH 7, use pH paper or meter to check Varies to a pH or until residual of reactant or until clarified To a HOC1 residual of 1 mg/1 D.O. measure to 7Q% of saturation or other Large ORP change/ cr+6 — Cr+6 is yellow Chemicals Ferric Chloride aluminum sulfate polyelectrolytes Calcium hydroxide, calcium oxide, sodium hydroxide , sodium carbonate, sulfuric acid, acetic acid, hydrochloric acid Calcium hydroxide, sodium hydroxide, sodium carbonate, sodium biocarbonate, sodium sulfate, sodium sulfide, potassium Chloride Sodium hypochlorite Air Sodium Bisulfite, Sodium sulfde to green HOC1 reduction, no ------- After clean-up operations have removed the spilled material(s) and contaminated debris from the water or ground, the OSC's responsibilities are not over. Improper shipping and disposal of spill clean up waste can cause serious safety problems, as well as result in secondary pollution as bad as if not worse than the original spill. Therefore, the OSC must be assured that all chemical disposal is carried out in a safe and proper manner . Disposal operations may involve the shipping of the waste materials to a state approved land disposal site, treatment by a reliable disposal or recycling company, or sending the material to a sewage treatment plant, etc. The preferred method of disposal would be to recycle to the spiller's company or to a company that can use the material in its operation. act as liaison between the ederal governmen and loca agences such as disposal sites, air pollution control agencies, sewage treatment plants, etc. Extremely toxic materials may require special on-site treatment, or as in the case of PCB's, either special incineration or shipment to an EPA/State approved disposal site. EPA, Edison, New Jersey, has specialized equipment that may be available to treat these very toxic materials. Coordination of this activity will be conducted by the EPA Environmental Emergency Section and the Oil and Special Materials Control Division, EPA, Headquarters. Environmental Damage Assessment Even though initial response to an environmental emergency does not include a formal damage assessment, the field investigator should be alert to the obvious signs of environmental harm. This could include indications of a fish kill, oiled and dying birds, contamination of beaches and marshlands, etc. Any signs of environmental damage should be reported to the Environ- mental Emergency Section, who will, in conjunction with the appropriate resource agencies, coordinate any necessary damage assessment. ------- Telephone Directory National Response Center 1-800-121-8802 U.S. Environmental Protection Agency Regional Office (206) 112-1263 Comm. Office 21 Hour Number 8-399-1263 FTS 21 Hour Number Operation Offices Idaho (208) 381-1150 Comm. Office 8-551-1150 FTS Oregon (503) 221-3250 Comm Office 8-123-3250 FTS Washington (206) 155-7218 Comm Office 8-399-1285 FTS U.S. Coast Guard 13th District Operations 112-5886 13th District, M.E.P. Branch Center (206) 112-5850 8-399-5850 FTS COTP Offices Seattle (206) W2-1856 (206) 112-7070 8-399-xxxx FTS Portland (503) 221-6323 Emergencies (503) 221-6321 General Information 8-123-xxxx FTS Corps of Engineers Portland District Division Engineer (503) 221-6000 (503) 221-3700 8-123-6000 FTS 8-123-3700 FTS Seattle District Walla Walla District (206) 761-3690 (509) 525-5626 8-399-3690 (509) 525-5100 8-112-xxx U.S. Attorney Portland, OR (503) 221-2765 8-123-2765 ------- Seattle, WA (206) 1)112-7970 8-399-7970 Spokane, WA (509) 1456-3811. 8-439-3811 Boise, ID (208) 3811-1211 8-5511-1211 National Oceanic & Atmospheric Administration (NOAA) National Marine Fisheries (206) 1)142-7575 8-399-7575 National Weather Service (206) 14112-51498 11142-5788 8-399-5788 Pacific Marine Environmental Laboratory (206) 1(112-1(598 8-399-!4598 FDAA (206) 1(112-1310 8-399-1310 Department of Interior Oil Spill Coordinator Portland, OR (503) 23»-3361 Ext. 11058 8-1(29-1058 Washington Response Coordinator Olympia, WA (206) 753-9578 8-1(31-9578 Oregon Response Coordinator Portland, OR (503) 231-3361 Ext 1083 Idaho Response Coordinator Boise, ID (208) 381-1931 8-5514-1931 ------- Idaho Department of Health & Welfare Division of Environment Offices REGION 1 Northern Idaho Coeur d'Alene 8-5 Monday-Friday Phone: 208-667-3521 Home Mike Christie, Supervisor 208-667-1072 Larry Comer, Env. Engineer 208-661-3290 Gary Sturm, Env. Engineer 208-667-0381 Dave Johann Lewiston 8-5 Monday-Friday Phone: 208-1-716-2651 Ext. 130 Ed Tulloch, Sr. Env. Quality Spec. 208-1-713-3225 REGION 2 Southwest Idaho Bolae 8-5 Monday-Friday Phone: 208-1-381-3823 Dave Sanders 208-315-5271 Jerry Yoder, Supervisor 208-376-3990 Dick Rogers, Env. Engineer 208-313-2657 Jon Wroten, Sr. Env. Quality Spec. 208-376-0318 Twin Falls 8-5 Monday-Friday Basil Typyi Ian von Lindern, Env. Engineer Alex Schaefer, Sr. Env. Quality Spec. 208-731-1000 Ext. 275 208-713-9508 208-513-6771 208-321-2291 REGION 3 Southeast Region Pocatello 8-5 Monday-Friday Phone: 208-233-6170 Ext. 291 Henry Moran, supervisor 208-232-8087 Jim Perry, Env. Engineer 208-785-5919 Gordon Hopson, Sr. Env. Quality 208-785-1991 Spec. CENTRAL OFFICE Boise 8-5 Monday-Friday Phone: 208-331-1255 or 208-331-1250 . 8-551-1255 (FTS) Al Murrey, Chief Water Quality 208-329-1305 Bureau Bob Olson, Chief, Reg. Env. Ser. 208-375-6182 Larry Koenig, Mrg. Source Control 208-311-1255 Work ------- DEQ EMERGENCY RESPONSE PLAN In the event of an oil spill, chemical and hazardous materials spill and waste-water treatment by-pass or spill, NOTIFY: OREGON EMERGENCY SERVICES, 21 hours 1-800-152-0311 (toll free number within Oregon) 1-503-378-1121 (if outside Oregon) ------- WASHINGTON STATE DEPARTMENT OF ECOLOGY Northwest Region (206) 885-1900 24 Hrs. (Redmond, WA) Southwest Region (206) 753-2353 21 Hrs. (Olympia, WA) Central Region (509) 575-2490 24 Hrs. (Yakima, WA) Eastern Region (509) 456-2926 24 Hrs. (Spokane, WA) 51 ------- Clean-Up Contractors Crowley Environmental Services Seattle, WA (206) 682-1898 Portland, OR (503) 283-1211 Western Environmental Services (503) 285-9111 (Portland) (206) 682-0377 (Seattle) Emergency Hotline 800-517-0792 (All States) 800-152-0769 (Oregon only) D. W. Ryckman and Associates, Inc. "React" - For Hazardous Material Response. Satellite Offices in Seattle and Portland 21 hour number (St. Louis, Missouri) (311) 569-0991 Oil Spill Coops Clean Sound Cooperative Seattle, WA - (206) 621-7011 Clean Biver Cooperative (503) 285-1025 Portland, OR ------- HAZARDOUS SUBSTANCE SPILL INFORMATION AND HELP Information Source 1. CHEM-TREC Information & Service All Chemicals involved in transportation emergencies, referral to chemical companies Telephone 1-800-424-9300 2. 3. H. 5. CHEVRON CHLORINE INSTITUTE UNION CARBIDE CO. (Help Hot Line) NATIONAL AGRICULTURE CHEMICALS ASSOCIATION Info and help on Chevron Chemical Products. Chlorine emergencies Info and help on Union Carbide Products Help with agriculture products (115) 233-3737 (Collect) 800-121-9300 (Chem. Tree) ]_301-7I|1-3187 (503) 286-1451 Stauffer Chemical, Portland 6. POISON CONTROL CENTERS Info on poisons, toxics, antidotes a. UNIVERSITY OF OR (503) 225-8311 PHYSICIANS CONSECTATIOB (21 hr number) CENTER Portland, OR b. POISON INFO CENTER (206) 631-5252 Seattle, Washington o. POISON CONTROL CENTER, IDAHO 1-800-632-8000 7. CHEM NUCLEAR SYSTEMS, INC Advice for handling (503) 223-1912 P.O. Box 1269 Portland, OH 97207 Arlington, OR 8. WES-CON, INC. Box 561 Twin Falls, ID 83301 9. CHEM-PRO Seattle, WA Portland, OR 10. KALAMA CHEMICAL Kalama, WA 11. WESTERN PROCESSORS ' Seattle, WA hazardous substances, will handle cleanup, & offer disposal site in Arlington, OR (Disposal Site) Recycling, encapsulation, storage & detoxification Accepts solvents and oils Will give advice in handling some hazardous materials spilled Sludge recovery (503) 151-2777 (208) 733-0897 (206) 767-0350 (503) 285-1618 (206) 673-2550 (206) 852-1350 53 ------- OIL SHEEN REFERENCE Standard Terms for High Viscosity Oil Films and Descriptive Appearance of High Viscosity Oil on Water Standard Term Barely visible Silvery Slightly colored Brightly colored Dull Dark Approximate Film Thickness 10-6 lO-^ inches meters 1.5 3 6 12 40 80 0.04 0.08 0.15 0.3 1.0 2.0 Approximate Quantity of Oil in Film Gals, per Lites per sq. miles sq. km. 25 4U 50 88 100 176 200 351 666 1,168 1,332 2,337 Appearance Barely visible under most favor- able light conditions Visible as a silvery sheen on water surface First trace of color may be observed Bright bands of color are visible Colors begin to turn dull brown Colors are much darker brown of black Note: Each one-inch thickness of oil equals 5.61 gallons per square yard or 17,378,909 U.S. gallons per square mile. STANDARD TERMS AND CONVERSION TABLE Knowing Gallon (U.S.) Barrel Cubic Feet Litre U.S. 1. 12. 7. 0, Multiply , Gallon .0000 0000 .1805 ,2611 by factor below to obtain U.S. Barrel 0.02381 1.00000 0.1781 0.00629 Cubic Feet 0.13368 5.6116 1.0000 0.03532 Litre 3.785 158.930 28.310 1.000 ------- TABLE OF ELEMENTS AND ATOMIC WEIGHTS Actinium Aluminum Americium Ant imony Argon Arsenic Astatine Barium Berkelium Beryllium Bismuth Boron Bromine Cadmium Calcium Californium Carbon Cerium Cesium Chlorine Chromium Cobalt Copper Curium Dysprosium Einsteinium Erbium Europium Fermium Fluorine Francium Gadolinium Gallium Germanium Gold Symbol Ac Al Am Sb Ar As At Ba Bk Be Bi B Br Cd Ca Cf C Ce Cs Cl Cr Co Cu Cm Dy Es Er Eu Fm F Fr Gd Ga Ge Au Atomic Number 89 13 95 51 18 33 85 56 97 1 83 5 35 48 20 98 6 58 55 17 21 27 29 96 66 99 68 63 100 9 87 61 31 32 79 Atomic Weight 227" 26.9815 213" 121.75 39.918 71.9216 210« 137.31 215" 9.0122 208.980 10.811 79.909 112.10 10.18 218« 12.01115 110.12 132.905 35.153 51.996 58.9332 63.51 215" 162.50 217" 167.26 151.96 251" 18.9981 223" 157.25 69.72 72.59 196.967 Mercury Molybdenum Neodymium Neon Neptunium Nickel Niobium Nitrogen Nobelium Osmium Oxygen Palladium Phosphorus Platinum Plutonium Polonium Potassium Praseodymium Promethium Protactinium Radium Radon Rhenium Rhodium Rubidium Ruthenium Samarium Scandium Selenium Silicon Silver Sodium Strontium Sulfur Tantalum Symbol Hg Mo Nd Ne Np Ni Nb N No Os 0 Pd P Pt Pu Po K Pr Pm Pa Ra Rn Re Rh Rb Ru Sm So Se Si Ag Na Sr S Ta Atomic Number 80 12 60 10 93 28 11 7 102 76 8 16 15 78 91 81 19 59 61 91 88 86 75 15 37 11 62 21 31 11 17 11 38 16 73 Atomic Weight 200.59 95.91 111.21 20.183 237" 58.71 92.906 11.0067 253" 190.2 16 105.1 30.9738 195.09 212" 210" 39.102 110.907 115" 231" 226" 222" 186.2 102.905 85.17 101.07 150.35 11.956 78.96 28.086 107.870 22.9898 87.62 32.061 180.918 •Mass number of isotope of longest known half-life. ------- Hafnium Helium Holmium Hydrogen Indium Iodine Iridium Iron Krypton Lanthanum Lawrencium Lead Lithium Lutetium Magnesium Manganese Mendelevium Symbol Hf He Ho H In I Ir Fe Kr La Lw Pb Li Lu Mg Mn Md Atomic Number 72 2 67 1 19 53 77 26 36 57 103 82 3 71 12 25 101 Atomic Weight 178.19 1.0026 161.930 1.00797 111.82 126.9011 192.2 55.817 83.80 138.91 259* 207.19 6.939 171.97 21.312 51.9381 256* Technetium Tellurium Terbium Thallium Thorium Thulium Tin Titanium Tungsten Uranium Vanadium Xenon Ytterbium Yttrium Zinc Zirconium Atomic Atomic Symbol Number Weight To 13 99« Te 52 127.60 Tb 65 158.921 Tl 81 201.37 Th 90 232.038 Tm 69 168.931 Sn 50 118.69 Ti 22 17.90 W 71 183.85 U 92 238.03 V 23 50.912 Xe 51 131.30 Yb 70 173.01 Y 39 88.905 Zn 30 65.37 Zr 10 91.22 •Mass number of isotope of longest known half-life. ------- Frequently called names and telephone numbers. NAME _^ TELEPHONE NUMBER ------- |