Template1 for Investigation Work Plan for [drainage name] Aggregate Area
[Proposed format for IWPs covering fewer SWMUs or technical areas]
Los Alamos National Laboratory, operated by Los Alamos National Security, LLC, for the U.S. Department of Energy under Contract No. DE-AC52-06NA25396, has prepared this document pursuant to the Compliance Order on Consent, signed March 1, 2005. The Compliance Order on Consent contains requirements for the investigation and cleanup, including corrective action, of contamination at Los Alamos National Laboratory. The U.S. government has rights to use, reproduce, and distribute this document. The public may copy and use this document without charge, provided that this notice and any statement of authorship are reproduced on all copies.
Prepared by the Environmental Programs Directorate
^ Investigation Work Plan
for [drainage name] Aggregate Area
Responsible project leader:
Responsible LANS representative:
Responsible DOE representative:
[This template was created to help bring consistency to the preparation and development of IWPs. Text labeled as “example text” or text in brackets generally indicates text to be completed or customized for the specific work plan. Paragraphs not so labeled are generally “boilerplate” or standard text that does not (usually) need to be modified. Text in red provides rules or policies for development of the information in the text.]
[An alternative outline to that shown in this document may be appropriate for IWPs covering many SWMUs or TAs -- see template 2. This template 1 contains the background discussion of general site conditions and operational history in one major section near the beginning. The alternative template 2 contains general site conditions and operational history within each major subsection that addresses an individual TA.]
[First example text:] The [drainage name] Canyon Aggregate Area is located within and south of the Los Alamos townsite in Technical Areas (TAs) xx, -xx, -xx, and -xx of Los Alamos National Laboratory (the Laboratory) and includes a total of xxx solid waste management units (SWMUs) and areas of concern (AOCs). Details of previous investigations and analytical results for all xxx sites are provided in the historical investigation report for [drainage name] Canyon Aggregate Area. Of these sites, xx have been previously investigated and/or remediated and have been approved for no further action; they are not discussed in this work plan. For the remaining xx sites, this work plan describes the operational history, evaluates existing analytical data, and proposes characterization and/or remediation activities.
Of the xx SWMUs and AOCs in the [drainage name] Canyon Aggregate Area that require some additional characterization and/or remediation activities, x fall within TA xx, xx fall within TA 0x, x fall within TA 0x, x fall within TA xx, and 1 falls within TA xx. These sites include
[Optional:] This aggregate area also includes two sites associated with former TA-xx but which lie within the boundary of TA-xx. TA-xx contains xx SWMUs and AOCs: xx sites have been approved for no further action (NFA), and xx sites will be investigated as part of this work plan. TA-xx contains xx sites: x have been approved for NFA and x is pending New Mexico Environment Department review.
This investigation work plan identifies and describes the activities needed to evaluate the historical data and, based on that evaluation, to propose additional sampling as necessary to define the nature and extent of contamination associated with the SWMUs, AOCs, and consolidated units within the [drainage name] Aggregate Area. Details of previous investigations and analytical results for the xx sites included in this work plan are provided in the historical investigation report for [drainage name] Aggregate Area.
[Example text for some sites:] All field activities proposed in this work plan will be conducted using a phased approach. The sites in this work plan are related to some of the earliest activities at the Laboratory and have been subjected to various investigation, remediation, demolition, and construction activities, particularly within TA xx and TA xx. These activities have resulted in significant changes to the SWMUs and AOCs relative to their operational conditions and complicate the selection of valid sampling locations. The proposed sampling locations presented in this work plan are preliminary. A variety of methods, singly or in combination, may be used to identify the final sampling locations. These methods include research of engineering or other drawings, nonintrusive geophysical surveys, and trenching. Field screening will also be conducted during all field activities, primarily for health and safety purposes, but also to assist with selection of sample locations.
[Second example text:] The objective of this work plan is to evaluate the historical data and, based on that evaluation, to propose additional sampling as necessary to define the nature and extent of contamination associated with the SWMUs, AOCs, and consolidated units within the [drainage name] Aggregate Area.
1.0 INTRODUCTION 1
1.1 Work Plan Overview 1
1.2 Work Plan Objectives 2
1.3 Phased Approach of Field Activities 2
2.0 Background 2
2.1 General Site Information 3
2.2 Operational History 3
2.3 Conceptual Site Model 4
2.3.1 Potential Contaminant Sources 4
2.3.2 Potential Contaminant Transport Mechanisms 4
2.3.3 Potential Receptors 5
2.3.4 Cleanup Standards 5
2.4 Data Overview 5
3.1 Surface Conditions 6
3.1.1 Soil 6
3.1.2 Surface Water 6
3.1.3 Land Use 8
3.2 Subsurface Conditions 8
3.2.1 Anticipated Stratigraphic Units 8
3.2.2 Hydrogeology 11
4.1 Consolidated Unit xx-003(a)-00 14
4.1.1 SWMU xx-003(a), Outfall 14
4.2 Consolidated Unit xx-003(a)-00 16
5.0 proposed investigation activiTIes at TA-xx 17
5.1 SWMU 46-002, Surface Impoundment 17
5.1.1 Summary of Previous Investigations for SWMU xx-xxx 17
5.1.2 Scope of Activities for SWMU xx-xxx 17
5.2 SWMU xx-xxx(a), Septic System 18
5.2.1 Summary of Previous Investigations for SWMU xx-003(a) 18
5.2.2 Scope of Activities for SWMU xx-003(a) 18
7.0 investigation methods 19
7.1 Establish Sampling Locations 19
7.2 Geophysical Surveys 20
7.3 Geodetic Surveys 21
7.4 Surface Sampling 21
7.4.1 Spade and Scoop Method 21
7.4.3 Sediment Samples 21
7.5 Subsurface Sampling 22
7.5.1 Hollow-stem Auger 22
7.5.2 Hand Auger 22
7.5.3 Split-Spoon Sampling 22
7.5.4 Borehole Abandonment 22
7.5.5 Excavation 22
7.6 Chain of custody for samples 23
7.7 Field Screening Methods 23
7.7.1 Radiological Screening 23
7.7.2 Organic Vapor Field Screening 23
7.7.3 Quality Assurance /Quality Control Samples 24
7.8 Laboratory Analytical Methods 24
7.9 Health and Safety 24
7.10 Equipment Decontamination 24
7.11 Investigation-Derived Waste 24
7.12 Removal Activities 24
7.12.1 Septic Tanks 24
7.13 Waste Management and Disposal 25
8.1 Groundwater 25
8.2 Sediment and Surface Water 26
10.0 References and Map Data Sources 27
10.1 Document References 27
10.2Map Data Sources 33
A-1.0 ACRONYMS and abbreviations 1
A-2.0 GLOSsary 3
A-3.0 Metric Conversion TABLE 13
A-4.0 Data Qualifier Definitions 13
B-1.0 Introduction 2
[The list of figures, plates, and tables here and the examples in the back of this document are examples only of the types that may need to be included. Figures and tables must be selected, created, and renumbered as appropriate for the area being investigated. See Consent Order Section XI.B.12 (below) for a list of all required figures.]
[Consent Order Section XI.B.12 Figures:
The following figures shall be included with each investigation work plan for each site, including presentation of data where previous investigations have been conducted. All figures must include an accurate bar scale and a north arrow. An explanation shall be included on each figure for all abbreviations, symbols, acronyms, and qualifiers. All maps shall contain a date of preparation.
2. A site plan that presents pertinent site features and structures, underground utilities, well locations, and remediation system locations and details. Off-site well locations and other relevant features shall be included on the site plan, if appropriate. Additional site plans may be required to present the locations of relevant off-site well locations, structures, and features.
3. Figures showing historical and proposed soil boring or excavation locations and sampling locations.
4. Figures presenting historical soil sample field screening and laboratory analytical data.
5. Figures presenting the locations of all existing and proposed borings and vapor monitoring well locations.
6. Figures showing all existing and proposed wells and piezometers, presenting historical groundwater elevation data, and indicating groundwater flow directions.
7. Figures presenting historical groundwater laboratory analytical data, if applicable. The chemical analytical data corresponding to each sampling location can be presented in tabular form on the figure or as an isoconcentration map.
8. Figures presenting historical and proposed surface water sample locations and field measurement data, if applicable.
9. Figures presenting historical surface water laboratory analytical data, if applicable.
10. Figures showing historical and proposed air or vapor sampling locations and presenting historical air quality data.
11. Figures presenting historical pilot and other testing locations and data, where applicable, including site plans and graphic data presentation.
12. Figures presenting geologic cross-sections, based on outcrop and borehole data acquired during previous investigations.]
[The number and content of tables or figures will need to be modified on a case-by-case basis to accommodate large areas or complex sites. For example, one map may be needed to show location with respect to adjacent drainages or canyon reaches and a second map to show the location of sites and utilities within the site. Complex utility layouts may require figures at differing scales.]
[For showing sampling locations in drainages, NMED wants to see canyon reaches on the same map with the sample locations.]
[For some sites, historical information was presented in an HIR and does not need to be repeated in figures and tables in the IWP.]
[Don’t include non-detects on maps. Ensure maps extend to include immediately adjacent canyon reaches. Ensure content of figures and tables agree. ]
[Photos are suggested to clearly show the complexity and logistical problems of certain sites.]
[Follow map guidelines in “Document Map Guidelines”, Dec 2006, EP-2006-0924.]
Figure n.n-n [drainage name] Aggregate Area [Example of preferred figure style and “look”.] 1
Figure n.n-n Generalized stratigraphy of bedrock geologic units of the Pajarito Plateau 2
Figure 5.12-1[from Canada del Buey IWP] Site features for SWMUs [drainage name] Aggregate Area [Example of preferred figure style and “look”.] 4
Figure n.n-n Site features for SWMU xx-xxx(a) and AOC xx-xxx 77
Figure n.n-n Inorganic chemicals detected above BVs at SWMU xx-xxx(a) and AOC xx-xxx 78
Figure n.n-n Organic chemicals detected at SWMU xx-xxx(a) and AOC xx-xxx 79
Figure n.n-n Radionuclides detected or detected above BVs/FVs at SWMU xx-xxx and
AOC xx-xxx 80
Figure n.n-n Proposed sampling locations for SWMU xx-xxx(a) and AOC xx-xxx 81
Figure n.n-n Site features for SWMUs xx-xxx, xx-xxx, [list]. 82
Figure n.n-n Proposed sampling locations for SWMUs xx-xxx, xx-xxx, [list]. 83
[Repeat sequence of figures as needed for each SWMO or AOC.]
[The list of figures, plates, and tables here and the examples in the back of this document are examples only of the types that may need to be included. Figures and tables must be selected, created, and renumbered as appropriate for the area being investigated. See Consent Order Section XI.B.11 (below) for a list of all required tables.]
[Consent Order Section XI.B.11 Tables:
The following summary tables may be included in the investigation work plans, if previous investigations have been conducted at the site. Data presented in the tables shall include information on dates of data collection, analytical methods, detection limits, and significant data quality exceptions. The analytical data tables shall include only detected analytes and data quality exceptions that could potentially mask detections.
1. Summaries of regulatory criteria, background, and applicable cleanup levels (may be included in the analytical data tables instead of as separate tables).
2. Summaries of historical field survey location data.
3. Summaries of historical field screening and field parameter measurements of soil, rock, sediments, groundwater, surface water, and air quality data.
4. Summaries of historical soil, rock, or sediment laboratory analytical data shall include the analytical methods, detection limits, and significant data quality exceptions that could influence interpretation of the data.
5. Summaries of historical groundwater elevation and depth to groundwater data. The table shall include the monitoring well depths, the screened intervals in each well, and the dates and times measurements were taken.
6. Summaries of historical groundwater laboratory analytical data. The analytical data tables shall include the analytical methods, detection limits, and significant data quality exceptions that could influence interpretation of the data.
7. Summary of historical surface water laboratory analytical data. The analytical data tables shall include the analytical methods, detection limits, and significant data quality exceptions that could influence interpretation of the data.
8. Summary of historical air sample screening and chemical analytical data. The data tables shall include the screening instruments used, laboratory analytical methods, detection limits, and significant data quality exceptions that could influence interpretation of the data.
Table n.n-n SWMUs and AOCs within the [drainage name] Aggregate Area 99
Table n.n-n Summary of Human Health Screening Levels for Chemicals and Radionuclides 103
Table n.n-n Analytical Methods for Surface and Subsurface Characterization 134
Table n.n-n Summary of Analytical Suites for Samples Previously Collected in TA-00 134
[Example table provided for samples previously collected may need to be separated into two tables, one for previous samples providing screening data and one for previous samples providing decision data.]
Table n.n-n Summary of Inorganic Chemicals above BVs at SWMU 00-000 134
Table n.n-n Summary of Organic Chemicals Detected at SWMU 00-000 134
Table n.n-n Summary of Radionuclides Detected or Detected above BVs/FVs at SWMU 04-00x 134
Table n.n-n Summary of Proposed Sampling at SWMU 00-000 134
[Repeat sequence of tables as needed for each SWMO or AOC.]
[Consent Order Section XI.B.13, Appendices: A description of IDW management shall be included as an appendix to the investigation work plan. The results of historical investigations required in this Consent Order shall be submitted with the investigation work plan as a separate document. Additional appendixes may be necessary to present additional data or documentation not listed above.]
Appendix A Acronyms and Abbreviations, Metric Conversion Table, and Data Qualifier Definitions
Appendix B Management Plan for Investigation-Derived Waste [Obtain correct Appendix B from ENV-RCRA waste management personnel listed on first page of Appendix B template in back.]
Plate 1 [drainage name] Aggregate Area