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

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Closure NoticeSuspected Release10.052Imminent HazardIdentifiedTank Closure andSamplingSystem Test and/orSite CheckReport Results toMDNRHazard AbatementActivities Report IfApplicableConcentration < DTL?YesNoSubmit Closur eReportRelease Confirmed?YesNoStopNoHazardAbatementActivities **Completed?YesSubmit Closur eReportClean up to DTLs?YesBNO FURTHERACTIONDevelopment & Validation of Site Conceptual Model (Include GWConsideration)NoTier 1 EvaluationAFigure 2- 2. MRBCA Proc ess Flowchart (Page 1 of 3)MRBCA Guidance Document Final Draft February 24, 2004
ANoConcentrationsExceed Tier 1Levels?YesCleanup toTier 1 Levels Feasible& Cost-effective?YesNoYesData Available toCalculate Tier 2Levels?NoCollect Relevant DataDevelop Tier 2 LevelsNoConcentrationsExceed Tier 2Levels?YesCleanup toTier 2 Levels Feasibleand Cost-effective?YesDCNoBFigure 2-2. MRBCA Process Flowchart (Page 2 of 3)MRBCA Guidance Document Final Draft February 24, 2004
Page 1 and 2: Missouri Department of Natural Reso
Page 3 and 4: FOREWORDThis guidance document desc
Page 5 and 6: ABBREVIATIONSAPI American Petroleum
Page 7 and 8: TABLE OF CONTENTSCOVER PAGEACKNOWLE
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: Site CharacterizationRegulatory Pol
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
Page 69 and 70: Figure 4-6(a). Wall Sampling After
Page 71 and 72: 5.0SITE CHARACTERIZATION AND OTHER
Page 73 and 74: • Type of product released, and
Page 75 and 76: If data collected in the past does
Page 77 and 78: • Determine the types of material
Page 79 and 80: The land use map need not be drawn
Page 81 and 82:
In the event that circumstances at
Page 83 and 84:
Multiple samples from across the si
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predominant flow direction, estimat
Page 87 and 88:
esidential receptors. For the subsu
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Step 2: From the point of release i
Page 91 and 92:
All boreholes and probes greater th
Page 93 and 94:
• Adequate QA/QC procedures must
Page 95 and 96:
Type ofProductReleasedKnown?NoAYesG
Page 97 and 98:
NFigure 5-2. An Example ofa Land Us
Page 99 and 100:
Figure 5-3(b)ST #SOIL BORING LOGBOR
Page 101 and 102:
Figure 5-4(b)ST #MONITORING WELL IN
Page 103 and 104:
Table 5-1 (Page 2 of 3)Chemicals of
Page 105 and 106:
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
Page 113 and 114:
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
Page 119 and 120:
6.0GENERAL CONSIDERATIONS FOR RISK
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• Local Zoning Ordinance(s),• C
Page 123 and 124:
6.1.3 Human Exposure Pathways and R
Page 125 and 126:
6.1.3.4 Pathways for GroundwaterPot
Page 127 and 128:
Due to the limited number of COCs a
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6.3 EVALUATION OF GROUNDWATER USEWi
Page 131 and 132:
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
Page 141 and 142:
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
Page 180 and 181:
• Intent of report: To provide re
Page 182 and 183:
12.3.4 Soil Vapor Measurement Work
Page 184 and 185:
- A discussion of ecological exposu
Page 186 and 187:
12.4.3 Tier 3 Work PlanThe content
Page 188 and 189:
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
Page 196 and 197:
- 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
Page 202 and 203:
The procedure used to calculate Tie
Page 204 and 205:
For a Tier 2 risk assessment, a com
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Soil Vapor Concentration: The soil
Page 208 and 209:
INDOOR INHALATION OF VAPORS(CHILD A
Page 210 and 211:
INGESTION AND INHALATION OF GROUNDW
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DERMAL CONTACT WITH CHEMICALS IN SU
Page 214 and 215:
INHALATION OF VAPORS AND PARTICULAT
Page 216 and 217:
Where:RBTL ss = Risk-based target l
Page 218 and 219:
Where:RBTL ai-adj = Age-adjusted ri
Page 220 and 221:
Where:RBTL ao-adj = Age-adjusted ri
Page 222 and 223:
Where:RBTL w-adj = Age-adjusted ris
Page 224 and 225:
Where:RBTL dcw-adj = Age-adjusted r
Page 226 and 227:
Where:RBTL dcss-adj = Age-adjusted
Page 228 and 229:
Where:RBTL ingss-adj = Risk-based t
Page 230 and 231:
Where:RBTL ss-adj = Age-adjusted ri
Page 232 and 233:
SUBSURFACE SOIL VAPOR CONCENTRATION
Page 234 and 235:
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
Page 248 and 249:
STREAM PROTECTION: ALLOWABLE SOIL A
Page 250 and 251:
Table B-2Physical and Chemical Prop
Page 252 and 253:
Table B-3 (Page 2 of 2)Exposure Fac
Page 254 and 255:
Table B-4 (Page 2 of 2)Fate and Tra
Page 256 and 257:
The procedure used to quantitativel
Page 258 and 259:
• 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
Page 266 and 267:
epresentative value for the hydraul
Page 268 and 269:
15Hydraulic Conductivity, gpd/ft 21
Page 270 and 271:
APPENDIX EESTIMATION OF REPRESENTAT
Page 272 and 273:
To calculate the representative con
Page 274 and 275:
The MRBCA process requires the eval
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concentration of these samples may
Page 278 and 279:
APPENDIX FCONSIDERATION OF TOTAL PE
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• All soil and groundwater sample
Page 282 and 283:
with Tier 1 and Tier 2 target level
Page 284 and 285:
APPENDIX GMRBCA REPORT FORMSForm No
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CLOSURE NOTICE FOR PETROLEUM RELEAS
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UNDERGROUND STORAGE TANK CLOSURE NO
Page 290 and 291:
CHOOSE THE AREA BASED ON YOUR COUNT
Page 292 and 293:
Risk-Based CorrectiveAction For Pet
Page 294 and 295:
UNDERGROUND STORAGE TANK CLOSURE RE
Page 296 and 297:
RESULTS OF SOIL ANALYSISFORM CR-2SI
Page 298 and 299:
TIER 1 AND TIER 2 RISK ASSESSMENT R
Page 300 and 301:
MAINMRBCACOVER PAGETABLE OF CONTENT
Page 302 and 303:
TABLE OF CONTENTSSITE NO.: SUBMITTA
Page 304 and 305:
FACILITY INFORMATION Tier 1-1SITE N
Page 306 and 307:
RELEASE CHARACTERIZATION Tier 1-3SI
Page 308 and 309:
SITE HYDROGEOLOGY Tier 1-5SITE NO.:
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ANALYTICAL DATA SUMMARY FOR SURFICI
Page 312 and 313:
ANALYTICAL DATA SUMMARY FOR SUBSURF
Page 314 and 315:
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
Page 324 and 325:
EXPOSURE MODEL - OFF-SITE CONSTRUCT
Page 326 and 327:
COMPARISON OF REPRESENTATIVE CONCEN
Page 328 and 329:
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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