missouri risk-based corrective action (mrbca) process for petroleum ...

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PNAPODPOEPOTWPSTIFQA/QCRBCARBTLRCRARMRMPRRLRSMoSCMSSTLsSWMPTCTDSTPH-DROTPH-GROTPH-OROTSPUELUSDAUSGSUSTVOAVOCWPPPoly Nuclear AromaticsPoint of DemonstrationPoint of ExposurePublicly Owned Treatment WorksPetroleum Storage Tank Insurance FundQuality Assurance/Quality ControlRisk-Based Corrective ActionRisk-Based Target LevelResource Conservation and Recovery ActRisk ManagementRisk Management PlanRequired Reporting LimitRevised Statues of the State of MissouriSite Conceptual ModelSite-Specific Target LevelsSolid Waste Management ProgramToxicity CharacteristicTotal Dissolved SolidTotal Petroleum Hydrocarbon-Diesel Range OrganicTotal Petroleum Hydrocarbon-Gasoline Range OrganicTotal Petroleum Hydrocarbon-Oil Range OrganicTrisodium Phosphate DodecahydrateUpper Explosive LimitUnited States Department of AgricultureUnited States Geological SurveyUnderground Storage TankVolatile Organic AnalysisVolatile Organic CompoundsWater Protection ProgramMRBCA Guidance Document vFebruary 24, 2004Final Draft
TABLE OF CONTENTSCOVER PAGEACKNOWLEDGEMENTSFOREWARDABBREVIATIONSPageiiiiv1.0 INTRODUCTION AND BACKGROUND 1-11.1 INTRODUCTION 1-11.2 APPLICABILITY AND PURPOSE 1-11.3 SPILL REPORTING 1-22.0 OVERVIEW OF MRBCA PROCESS 2-12.1 INTRODUCTION 2-12.2 RISK-BASED CORRECTIVE ACTION PROCESS 2-12.2.1 Site Discovery 2-12.2.2 Comparison with Default Target Levels 2-22.2.3 Development and Validation of Site Conceptual Model 2-22.2.4 Tier 1 Risk Assessment 2-32.2.5 Tier 2 Risk Assessment 2-42.2.6 Tier 3 Risk Assessment 2-42.2.7 Development and Implementation of Risk Management Plan 2-52.2.8 No Further Action under the MRBCA Program 2-52.3 RISK-BASED TARGET LEVELS WITHIN THE MRBCA PROCESS 2-52.4 ANTICIPATED IMPACT ON SITE COSTS 2-62.5 DOCUMENTATION OF THE MRBCA PROCESS 2-73.0 SITE DISCOVERY AND INITIAL RESPONSE 3-13.1 INTRODUCTION 3-13.2 INVESTIGATION OF IMMINENT THREAT 3-13.3 INVESTIGATION OF SUSPECTED RELEASE 3-23.4 INVESTIGATION OF CONFIRMED RELEASE 3-33.5 REPORTING AND CLEAN-UP OF SPILLS AND OVERFILLS 3-33.6 INITIAL SITE CHARACTERIZATION 3-33.7 REMOVAL OF LIGHT NON-AQUEOUS PHASE LIQUID (LNAPL) 3-33.8 COLLECTION AND EVALUATION OF DATA 3-43.9 NO FURTHER ACTION BASED ON DEFAULT TARGET LEVELS 3-44.0 UST CLOSURE GUIDANCE 4-14.1 INTRODUCTION 4-14.2 SUBMISSION OF UST CLOSURE NOTICE 4-1MRBCA Guidance Document viFebruary 24, 2004Final Draft
Page 1 and 2: Missouri Department of Natural Reso
Page 3 and 4: FOREWORDThis guidance document desc
Page 5: ABBREVIATIONSAPI American Petroleum
Page 9 and 10: 5.0 SITE CHARACTERIZATION AND OTHER
Page 11 and 12: 7.0 TIER 1 RISK ASSESSMENT 7-17.1 S
Page 13 and 14: 13.0 REFERENCES 13-1MRBCA Guidance
Page 15 and 16: Figure 4-3(b) Tank Excavation Sampl
Page 17 and 18: IMPORTANT CONTACT INFORMATIONAmeric
Page 19 and 20: MRBCA Guidance Document xviiiFebrua
Page 21 and 22: This document does not in any way r
Page 23 and 24: investigation resulting in confirma
Page 25 and 26: Details of Tier 1 risk assessment a
Page 27 and 28: Tier 1 RBTLs are generic target lev
Page 29 and 30: Site CharacterizationRegulatory Pol
Page 31 and 32: ANoConcentrationsExceed Tier 1Level
Page 33 and 34: Table 2-1Comparison of Risk Assessm
Page 35 and 36: 3.0SITE DISCOVERY AND INITIAL RESPO
Page 37 and 38: 3.4 INVESTIGATION OF CONFIRMED RELE
Page 39 and 40: Table 3-1Default Target LevelsChemi
Page 41 and 42: 4.3 CLOSURE OF TANKS BY EXCAVATION
Page 43 and 44: 4.4.2.2 Soil Sampling Requirements
Page 45 and 46: The samples must be collected from
Page 47 and 48: Sampling Background Conditions: If
Page 49 and 50: A groundwater investigation is requ
Page 51 and 52: 4.5.1 On-site Storage of Excavated
Page 53 and 54: 4.5.3 Disposal of Petroleum Contami
Page 55 and 56: Exhibit 4-8Toxicity Characteristic
Page 57 and 58:
To properly characterize deferred m
Page 59 and 60:
Figure 4-1(a). Tank Floor Sampling
Page 61 and 62:
Figure 4-2(a). Tank Excavation Samp
Page 63 and 64:
Figure 4-3(a). Tank Excavation Samp
Page 65 and 66:
Figure 4-4(a). Sampling for a Singl
Page 67 and 68:
Figure 4-5(a). In-Place Closure of
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Figure 4-6(a). Wall Sampling After
Page 71 and 72:
5.0SITE CHARACTERIZATION AND OTHER
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• Type of product released, and
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If data collected in the past does
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• Determine the types of material
Page 79 and 80:
The land use map need not be drawn
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In the event that circumstances at
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Multiple samples from across the si
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predominant flow direction, estimat
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esidential receptors. For the subsu
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Step 2: From the point of release i
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All boreholes and probes greater th
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• Adequate QA/QC procedures must
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Type ofProductReleasedKnown?NoAYesG
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NFigure 5-2. An Example ofa Land Us
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Figure 5-3(b)ST #SOIL BORING LOGBOR
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Figure 5-4(b)ST #MONITORING WELL IN
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Table 5-1 (Page 2 of 3)Chemicals of
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Table 5-2Weight Percents for COCs i
Page 107 and 108:
PAH’SCompound Method Water PQL So
Page 109 and 110:
MRBCA LABORATORY REQUIREMENTSI. REQ
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for calibration or quantitation. Th
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7. Retention time windows are defin
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ATTACHMENT AEcological Risk Assessm
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7.b.) Is there a hydrogeological co
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6.0GENERAL CONSIDERATIONS FOR RISK
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• Local Zoning Ordinance(s),• C
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6.1.3 Human Exposure Pathways and R
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6.1.3.4 Pathways for GroundwaterPot
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Due to the limited number of COCs a
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6.3 EVALUATION OF GROUNDWATER USEWi
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ased on consideration of the follow
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6.4.1 Protection of StreamsProtecti
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criteria based on these routes of e
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• Ecotox Thresholds (ETs) as pres
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must be used. The specific equation
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Pathway complete?NoYesTier 1 evalua
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MCL Exists?YesUse MCLNoChemicalVola
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Identify Stream Classification10 CS
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Table 6-2Calculation of Representat
Page 149:
•••••
Page 154 and 155:
Tables detailing the March 2005 soi
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Depth to Subsurface Soil Sources (d
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8.1.2 Groundwater ParametersDepth t
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Infiltration Rate (I) (Tier 1 defau
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Impacted AreayLeachatexzYW gaU gwZC
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• An explanation of data gaps tha
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Condition 4: Absence of ecological
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• Active remedial actions to redu
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10.4 NO FURTHER ACTION PROCEDUREWhe
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C. A Deed Notice is an informationa
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(5) a state regulation prohibiting
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12.2 SITE DISCOVERY12.2.1 Release/S
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12.2.4 System Test Report (narrativ
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• Intent of report: To provide re
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12.3.4 Soil Vapor Measurement Work
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- A discussion of ecological exposu
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12.4.3 Tier 3 Work PlanThe content
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o A description of the risk managem
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• Intent of work plan: The AUL Wo
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(investigative, remedial, or monito
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- A discussion of the composition o
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- Form No. Tier 1-7: Analytical Dat
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Total Petroleum Hydrocarbon Criteri
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APPENDIX AThis appendix has been in
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The procedure used to calculate Tie
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For a Tier 2 risk assessment, a com
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Soil Vapor Concentration: The soil
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INDOOR INHALATION OF VAPORS(CHILD A
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INGESTION AND INHALATION OF GROUNDW
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DERMAL CONTACT WITH CHEMICALS IN SU
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INHALATION OF VAPORS AND PARTICULAT
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Where:RBTL ss = Risk-based target l
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Where:RBTL ai-adj = Age-adjusted ri
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Where:RBTL ao-adj = Age-adjusted ri
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Where:RBTL w-adj = Age-adjusted ris
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Where:RBTL dcw-adj = Age-adjusted r
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Where:RBTL dcss-adj = Age-adjusted
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Where:RBTL ingss-adj = Risk-based t
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Where:RBTL ss-adj = Age-adjusted ri
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SUBSURFACE SOIL VAPOR CONCENTRATION
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GROUNDWATER CONCENTRATIONS PROTECTI
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VOLATILIZATION FACTORS(PARTICULAR E
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VOLATILIZATION FACTORS(SUBSURFACE S
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EFFECTIVE DIFFUSION COEFFICIENTSeff
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LEACHING FACTOR FROM SUBSURFACE SOI
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SOIL VAPOR CONCENTRATION AT WHICH V
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ALLOWABLE SOIL AND GROUNDWATER CONC
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STREAM PROTECTION: ALLOWABLE SOIL A
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Table B-2Physical and Chemical Prop
Page 252 and 253:
Table B-3 (Page 2 of 2)Exposure Fac
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Table B-4 (Page 2 of 2)Fate and Tra
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The procedure used to quantitativel
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• Tier 2, Alternative 2: The soil
Page 260 and 261:
The entity performing the work shal
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Pathway complete?NoYesTier 1 evalua
Page 264 and 265:
APPENDIX DA METHOD FOR DETERMINING
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epresentative value for the hydraul
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15Hydraulic Conductivity, gpd/ft 21
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APPENDIX EESTIMATION OF REPRESENTAT
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To calculate the representative con
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The MRBCA process requires the eval
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concentration of these samples may
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APPENDIX FCONSIDERATION OF TOTAL PE
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• All soil and groundwater sample
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with Tier 1 and Tier 2 target level
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APPENDIX GMRBCA REPORT FORMSForm No
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CLOSURE NOTICE FOR PETROLEUM RELEAS
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UNDERGROUND STORAGE TANK CLOSURE NO
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CHOOSE THE AREA BASED ON YOUR COUNT
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Risk-Based CorrectiveAction For Pet
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UNDERGROUND STORAGE TANK CLOSURE RE
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RESULTS OF SOIL ANALYSISFORM CR-2SI
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TIER 1 AND TIER 2 RISK ASSESSMENT R
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MAINMRBCACOVER PAGETABLE OF CONTENT
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TABLE OF CONTENTSSITE NO.: SUBMITTA
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FACILITY INFORMATION Tier 1-1SITE N
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RELEASE CHARACTERIZATION Tier 1-3SI
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SITE HYDROGEOLOGY Tier 1-5SITE NO.:
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ANALYTICAL DATA SUMMARY FOR SURFICI
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ANALYTICAL DATA SUMMARY FOR SUBSURF
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ANALYTICAL DATA SUMMARY FOR GROUNDW
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ANALYTICAL DATA SUMMARY FOR GROUNDW
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SOIL GEOTECHNICAL PARAMETERS* Tier
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EXPOSURE MODEL - OFF-SITE RESIDENT
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EXPOSURE MODEL - OFF-SITE NON-RESID
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EXPOSURE MODEL - OFF-SITE CONSTRUCT
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COMPARISON OF REPRESENTATIVE CONCEN
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Page 330 and 331:
Page 332 and 333:
Page 334 and 335:
Page 336 and 337:
Page 338 and 339:
Page 340 and 341:
Risk-Based CorrectiveAction For Pet
Page 342 and 343:
TIER 2 FATE AND TRANSPORT PARAMETER
Page 344 and 345:
Page 346 and 347:
Page 348 and 349:
Page 350 and 351:
Page 352 and 353:
Page 354 and 355:
Page 356 and 357:
TIER 2 APPLICABLE TARGET LEVELS FOR
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