USE OF DISPERSANTS - U.S. National Response Team (NRT)

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wear long sleeve shirt, chemical resistant gloves, and chemical protective goggles.4. Storage temperature:a. Maximum storage temperature: l70 Fb. Minimum storage temperature: -30 Fc. Optimum storage temperature range: 40 F to l00 Fd. Temperatures of phase separations and chemical changes: N/AV. SHELF LIFEThe shelf life of unopened drums of COREXIT 9500 is unlimited. Containers should always be capped when not inuse to prevent contamination and evaporation of solvents.VI. RECOMMENDED APPLICATION PROCEDUREl. Application Method:COREXIT 9500 is a high performance, biodegradable oil spill dispersant concentrate that is effective on a widerange of oils including the heavier, more weathered oils and emulsified oils. COREXIT 9500 contains the samesurfactants present in COREXIT 9527 and a new improved oleophilic solvent delivery system. The product can beused in all regions of the world regardless of climate.Aerial Spraying. For aerial spraying, apply COREXIT 9500 undiluted. Various fixed-wing aircraft or helicopterscan be used for spraying over a large area, from an altitude of 30 to 50 feet or even higher, depending on applicationequipment and aircraft.The spray nozzles used are most critical since droplet size must be controlled. Avoid nozzles that produce too fine aspray (mist or fog). No nozzle may be necessary if the airplane travels at 120 mph (104 knots) or more, since the airshear at these speeds will be sufficient to break the chemical stream into droplets.Boat Spraying. COREXIT 9500 may be applied by workboats equipped with spray booms mounted ahead of thebow wake as far forward as possible. The preferred and most effective method of application from a workboat is touse a low-volume, low-pressure pump so the chemical can be applied undiluted. Spray equipment designed toprovide a diluted dispersant solution to the spray booms can also be used. As with most effective concentrates,dispersant concentrations in the 5 to 10% range are recommended to avoid significant fall-off in effectiveness.COREXIT 9500 should be applied as droplets, not fogged or atomized. Natural wave or boat wake action usuallyprovides adequate mixing energy to disperse the oil. Water from a fire hose can also be used for agitation of thetreated slick.Recent tests have indicated that a slightly modified fire monitor may also be useful for applying dispersantconcentrations such as COREXIT 9500. A screen cap is used on the nozzle of the monitor to obtain a more uniformspray pattern with the proper sized droplet. Due to the volume output and the greater reach of the fire monitor,significantly more area can be covered in a shorter period of time than using conventional spray booms.System Calibration. Spray systems should be calibrated at temperatures anticipated to insure successful applicationand dosage control. Application at sub-freezing temperatures may require larger nozzle, supply lines, and orificesdue to higher product viscosity. Refer to Exxon Chemical Company’s Applications Guide for charts and aids indesigning and calibrating application systems2. Concentration/Application Rate:A treatment rate of about 2 to 10 U.S. gallons per acre, or a dispersant to oil ratio of 1:50 to 1:10 is recommended.This rate varies depending on the type of oil, degree of weathering, temperature, and thickness of the slick.3. Conditions for Use:
As with any dispersant, COREXIT 9500 should be applied as soon as possible to the floating oil to ensure thehighest degree of success. Early treatment with COREXIT 9500, even at reduced treat rates, can also counter the“mousse” forming tendencies of the spilled oil.COREXIT 9500 is useful on oil spills on fresh or salt waters, and at any water temperatures. The product iseffective on most oils, weathered spills, and chocolate mousse. Although viscous oil may require higher dosagerates, any oil that will film or spread on the water surface usually can be dispersed.VII. TOXICITY AND EFFECTIVENESS1. TOXICITY:MATERIAL TESTED SPECIES LC50 (ppm)COREXIT 9500 Menidia beryllina 25.20 96-hrMysidopsis bahia32.23 48-hrNo. 2 Fuel Oil Menidia beryllina 10.72 96-hrMysidopsis bahia16.12 48-hrCOREXIT 9500 & Menidia beryllina 2.61 96-hrNo. 2 Fuel Oil (1:10) Mysidopsis bahia 3.4 48-hrReference Toxicant Menidia beryllina 7.07 96-hr(SDS) Mysidopsis bahia 9.82 48-hr2. EFFECTIVENESSSwirling flask dispersant effectiveness test with South Louisiana and Prudhoe Bay Crude OilsOil Effectiveness %Prudhoe Bay Crude 45.3%South Louisiana Crude 54.7%Average of Prudhoe Bay & South Louisiana Crudes 50.0%VIII. PHYSICAL PROPERTIES1. Flash Point: 176 F (SETA closed sup; ASTM D3278)2. Pour Point: -70 F (ASTM D97)3. Viscosity: 55 cst at 68 F4. Specific Gravity: 0.949 at 60 F (ASTM D1963)5. pH: 6.46. Chemical Name and Percentage by Weight of the Total Formulation: CONFIDENTIAL7. Surface Active Agents: CONFIDENTIAL
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UPDATES AND CHANGESCHANGE OR UPDATE
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CARIBBEAN REGIONAL RESPONSE TEAMPOL
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SECTION IPurposeThis policy provide
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2. YELLOW ZONE - WATERS REQUIRING C
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SECTION IIIProtocolsTHE FOLLOWING R
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APPENDICES
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Caribbean Regional Response TeamDis
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CommanderSeventh Coast Guard Distri
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mile from any reef which is less th
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high exposure levels, volatile hydr
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a few days or weeks, unmetabolized
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1990. Geraci, J.R. and D. J. St. Au
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CommanderSeventh Coast Guard Distri
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Biological Assessment of Effects on
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The dispersed oil droplets, ranging
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Sea TurtlesSea turtles can be expos
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Most aquatic organisms have the abi
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Ernst, C.H., J. Lovich, and R.W. Ba
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Appendix IIIDispersant Use Monitori
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Dispersant Use Monitoring Program w
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APPENDIX IVDispersant Use Decision
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- dispersant composition;- water sa
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For Puerto Rico:1) the waters are n
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DOCUMENTATION/APPLICATION FORM FORD
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2. Type of aircraft used __________
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Letter of AgreementCommonwealth of
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300. SCOPE301. The USCG, USEPA, USD
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debriefing will gather information
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LETTER OF AGREEMENTON LIMITED USE O
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LETTER OF AGREEMENTON LIMITED USE O
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minimize substantial threat to publ
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Appendix VIDispersant Use Operation
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APPENDIX VIDispersant Use Operation
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APPENDIX VI TABLE OF CONTENTSSECTIO
Page 86 and 87: ICS DISPERSANT USE ORGANIZATIONAL R
Page 88 and 89: DISPERSANT USE DECISION / IMPLEMENT
Page 90 and 91: DISPERSANT APPLICATION PLATFORM CAP
Page 92 and 93: DISPERSANT APPLICATION OPERATIONAL
Page 94 and 95: DISPERSANT OPERATION PLAN CHECKLIST
Page 96 and 97: GENERAL:OBSERVATIONS:PHOTOGRAPHY:In
Page 98 and 99: Incident CommanderOperations Sectio
Page 100 and 101: DISPERSANT / APPLICATION FORM FROM
Page 102 and 103: DISPERSANT / APPLICATION FORM FROM
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Page 106 and 107: • Comply with the dispersant use
Page 108 and 109: • Coordinates and is lead for any
Page 110 and 111: SPRAYER LOG SHEET(Completed by Spra
Page 112 and 113: OBSERVATION AIRCRAFT / VESSEL / "OB
Page 114 and 115: • The visibility of the dispersed
Page 116 and 117: Duration of FlightPreferred Altitud
Page 118 and 119: DISPERSANT OBSERVATION FINAL REPORT
Page 120 and 121: SITE SAFETY PLAN TEMPLATE FOR DISPE
Page 122 and 123: Adequate protection may be achieved
Page 124 and 125: (404)639-0615 (24 hr) (voice) 0655
Page 126 and 127: GENERIC SITE SAFETY PLAN FOR DISPER
Page 128 and 129: • From a safe distance (at least
Page 130 and 131: SAFE APPROACH TO A HELICOPTERAPPROA
Page 132 and 133: c. Optimum storage temperature rang
Page 134 and 135: X. ANALYSIS FOR HEAVY METALS AND CH
Page 138 and 139: 8. Solvents: CONFIDENTIAL9. Additiv
Page 140: ___ rubber steel toe/shank safety b
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USE OF DISPERSANTS - U.S. National Response Team (NRT)

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