- 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 and 30: Site CharacterizationRegulatory Pol
- Page 31 and 32: ANoConcentrationsExceed Tier 1Level
- Page 33: Table 2-1Comparison of Risk Assessm
- 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
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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
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PAH’SCompound Method Water PQL So
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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
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•••••
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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
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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
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The entity performing the work shal
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Pathway complete?NoYesTier 1 evalua
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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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COMPARISON OF REPRESENTATIVE CONCEN
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COMPARISON OF REPRESENTATIVE CONCEN
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COMPARISON OF REPRESENTATIVE CONCEN
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COMPARISON OF REPRESENTATIVE CONCEN
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COMPARISON OF REPRESENTATIVE CONCEN
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COMPARISON OF REPRESENTATIVE CONCEN
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Risk-Based CorrectiveAction For Pet
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TIER 2 FATE AND TRANSPORT PARAMETER
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COMPARISON OF REPRESENTATIVE CONCEN
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COMPARISON OF REPRESENTATIVE CONCEN
- Page 348 and 349:
COMPARISON OF REPRESENTATIVE CONCEN
- Page 350 and 351:
COMPARISON OF REPRESENTATIVE CONCEN
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COMPARISON OF REPRESENTATIVE CONCEN
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COMPARISON OF REPRESENTATIVE CONCEN
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TIER 2 APPLICABLE TARGET LEVELS FOR