TABLE OF CONTENTS
NEW MEXICO UNDERGROUND STORAGE TANK BUREAU
GUIDELINES FOR CORRECTIVE ACTION
Date Last
RevisedPage
TABLE OF CONTENTS i
INTRODUCTION vii
LIST OF ACRONYMS ix
CHAPTER
1.0SOIL AND GROUNDWATER, SAMPLING1-1
AND DISPOSAL
1.1Overview1-1
1.2Soil sampling locations at tank removals1-1
1.3Confirming a release1-2
1.4Soil sampling and analysis1-2
1.4.1Gasoline contaminated soils1-3
1.4.1.1Heated headspace method1-3
1.4.1.2Sampling equipment for laboratory1-4
analysis
1.4.1.3Sample collection for methanol extraction1-4
1.4.1.4Sampling locations for soil borings1-5
1.4.1.5Analytical methods1-6
1.4.2Diesel, jet fuel, kerosene, waste oil, and other 1-6
heavy petroleum products in soil
1.4.2.1 Sampling equipment for laboratory1-6
analysis
1.4.2.2 Sampling locations for soil borings1-7
1.4.2.3 Analytical methods1-8
1.4.2.4 Waste oil in soil1-8
1.4.3Soil geotechnical properties1-9
1.5Groundwater sampling and analysis1-11
1.5.1Monitoring well development1-11
1.5.2Non-aqueous phase liquids1-11
1.5.3Purging procedures1-11
1.5.4Glassware1-12
1.5.5Preservation1-12
1.5.6Quality assurance/quality control 1-13
1.5.7Groundwater sampling procedure1-13
1.5.8Analytical methods1-14
1.6Petroleum contaminated soil: handling, remediation,1-14
and disposal
1.6.1General1-14
1.6.2Permits1-14
1.6.3Remediation requirements for contaminant1-15
saturated soils and unsaturated soils
1.6.4Handling and temporary storage1-15
1.6.5On-site thin spreading/landfarming1-16
1.6.6Incineration1-16
1.6.7Asphalt plants1-16
1.6.8Off-site disposal at landfills/landfarms1-17
1.6.9Other off-site remediation/disposal1-17
1.6.10In-situ remediation1-17
1.6.11Reporting1-17
1.7Groundwater handling and disposal1-17
1.7.1Permits1-18
1.7.2Small volumes of water1-18
1.7.3Large volumes of water1-18
1.8Disposal of recovered petroleum product1-19
TABLES
Table 1-1Maximum allowable detection limits1-20
2.0PROCEDURES FOR CONSTRUCTING WELLS2-1
FIGURES
Figure 2-1Monitoring well construction diagram2-3
3.0DECOMMISSIONING AND ABANDONING WELLS3-1
3.1General 3-1
3.2Abandoning boreholes3-1
3.3Abandoning monitoring wells3-1
4.0 RISK BASED EVALUATION OF PETROLEUM4-1
RELEASES
4.1Overview of the NMRBDM process4-1
4.2Contaminants of concern4-4
4.3Development of site-conceptual exposure scenario4-5
4.3.1Land use4-5
4.3.1.1Current land use4-7
4.3.1.2Most likely future land use4-7
4.3.2Receptors (on-site and off-site)4-7
4.3.3Pathways and routes of exposure4-8
4.3.3.1Pathways for inhalation4-9
4.3.3.2Pathways for surficial soils (0-1 ft)4-9
4.3.3.3Pathways for subsurface soils4-10
(1 ft bgs to water table)
4.3.3.4Pathways for groundwater4-10
4.3.3.5 Other pathways4-11
4.4Calculation of target levels4-11
4.4.1Target risk level4-11
4.4.2Chemical-specific physical and chemical properties4-12
4.4.3Quantitative toxicity factors4-12
4.4.4Exposure factors4-13
4.4.5Fate and transport parameters4-13
4.4.6Mathematical models4-15
4.5Protection of groundwater4-15
4.5.1Calculation of soil concentrations protective of 4-16
groundwater
4.5.1.1Implementation of SESOIL, Summers, and4-16
Domenico models
4.5.1.2Estimation of DAFs4-17
4.5.1.3 Soil concentrations protective of 4-17
groundwater
4.6Protection of surface water4-18
4.7Demonstration of equivalent protection 4-18
4.7.1Procedure to establish equivalent groundwater4-18 protection standards/alternative abatement
standards
4.8Estimation of representative concentrations for soil4-21
and groundwater
4.8.1Representative groundwater concentrations4-21
4.8.2Representative soil concentrations 4-22
(for surface releases)
4.8.3Representative soil concentrations 4-22
(for subsurface releases)
4.8.4Representative soil concentrations 4-23
(for surface releases, indoor inhalation pathway)
4.9Ecological exposure4-23
4.10Documentation of the NMRBDM evaluation4.24
4.11Tier 1 evaluation4-24
4.11.1Step 1: Development of a site conceptual4-24
exposure scenario
4.11.2Step 2: Selection of relevant Tier 1 risk based4-24
screening levels (RBSLs)
4.11.3Step 3: Comparison of RBSLs selected in Step 24-25
with representative site-specific concentrations
4.11.4Step 4: Selection of the next course of action4-25
4.12Tier 2 evaluation4-26
4.12.1Step 1: Development of a site conceptual4-27
exposure scenario
4.12.2Step 2: Input parameters4-27
4.12.3Step 3: Calculation of Tier 2 site-specific target levels 4-28
(SSTLs)
4.12.4Step 4: Calculation of representative site-4-28
specific concentrations
4.12.5Step 5: Comparison of SSTLs calculated in Step 3 with4-28
representative site-specific concentrations
4.12.6Step 6: Selection of the next course of action4-28
4.13Tier 3 evaluation4-29
FIGURES
Figure 4-1Generalized NMRBDM process4F-1
Figure 4-2Graphical display of a site conceptual exposure scenario4F-2
Figure 4-3Schematic description of Domenico model4F-3
Figure 4-4Schematic of the source, compliance well, and4F-4
exposure well
Figure 4-5Schematic of soil column4F-5
TABLES
Table 4-1Contaminants of concern for different product releases4T-1
Table 4-2 Example of tabular format for site conceptual4T-3
exposure scenario
Table 4-3Physical and chemical properties of contaminants4T-4
of concern
Table 4-4Toxicity parameters of contaminants of concern4T-6
Table 4-5Tier 1 and 2 default exposure parameters4T-8
Table 4-6Fate and transport parameters4T-10
Table 4-7Selected New Mexico groundwater standards and RBSLs4T-11
Table 4-8Equilibrium conversion factors4T-13
Table 4-9Default data for the SESOIL Model4T-14
Table 4-10Default data for the Summers Model4T-17
Table 4-11Default data for the Domenico Model4T-18
Table 4-12Tier 1 unsaturated zone configurations4T-19
Table 4-13Dilution attenuation factors for unsaturated zone4T-21
Table 4-14Dilution attenuation factors for saturated zone4T-24
Table 4-15RBSLs for soil concentrations protective of groundwater4T-25
Table 4-16RBSLs for soil concentrations protective of groundwater, 4T-28
no transport zone
Table 4-17RBSLs for residential scenario4T-29
Table 4-18RBSLs for commercial worker4T-30
Table 4-19RBSLs for construction worker4T-31
EQUATIONS
Equation 4-1Indoor inhalation of vapor emissions4E-1
Equation 4-2Outdoor inhalation of vapor emissions4E-1
Equation 4-3Direct ingestion of groundwater, for chemicals without 4E-2
NM groundwater standards
Equation 4-4Subsurface soil concentrations protective of indoor 4E-2
vapor inhalation
Equation 4-5Groundwater concentrations protective of indoor vapor 4E-3
inhalation
Equation 4-6Inhalation of vapors and particulates, dermal contact and 4E-4
ingestion of chemicals in surficial soil
Equation 4-7Subsurface soil concentrations protective of groundwater4E-5
Equation 4-8Volatilization factor from subsurface soil to indoor air4E-6
Equation 4-9Volatilization factor from groundwater to indoor air4E-7
Equation 4-10Delivery of particulate chemicals from soil to air4E-7
Equation 4-11Volatilization factor from surficial soil4E-8
Equation 4-12Effective diffusion coefficient in soil based on vapor-4E-9
phase concentration
Equation 4-13Domenico model: dilution attenuation factor in the 4E-10
saturated zone
Equation 4-14Leaching factor from subsurface soil to groundwater4E-11
Equation 4-15Soil concentration at which dissolve pore water and 4E-11
vapor phases become saturated
Equation 4-16Risk based soil and groundwater concentration for 4E-12
groundwater resource protection
Equation 4-17Soil concentration protective of groundwater4E-13
Equation 4-18Equilibrium conversion factor4E-13
5.0MONITORED NATURAL ATTENUATION5-1
5.1Overview5-1
5.2References5-1
6.0PETITION FOR WQCC ALTERNATIVE ABATEMENT6-1
STANDARDS
6.1Overview6-1
6.2Content of the petition6-1
ATTACHMENT 1CORRECTIVE ACTION REPORT FORMATS
User’s guide
14 day report forms
Investigation report forms
Tier 1 report forms
Tier 2 report forms
ATTACHMENT 2CORRECTIVE ACTION FUND, APPLICATION FOR PAYMENT FORMS AND INSTRUCTIONS
State Lead Invoice
Attachment Checklist
General Instructions
Instructions for Claim Form
Cost Details Forms
Instructions for Invoicing Formats
Contractor Fee Schedule
Disclosure Form – Tank Owners/Operators
Disclosure Fore – Consultants
Certified Scientist Statement
Financial Means Test
Ground Water Protection Act
Request for Compliance Determination
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Table of Contents03/13/00