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Pacific Southwest, Region 9: Superfund

Serving Arizona, California, Hawaii, Nevada, the Pacific Islands, and Tribal Nations

San Fernando Valley (All Areas)

Superfund Site

Technical Document

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Date Title / pdf File
02/01/99 1998 Groundwater Quality Monitoring Report

San Fernando Valley

1998 Groundwater Quality
Monitoring Report

Table of Contents
Title Page title.pdf(40 kb)
acronyms.pdf(10kb)
Section (Page)
1 Introduction (1-1)
1.1 Setting (1-1)
1.2 Background (1-1)
1.3 Report Organization (1-2)
section1.pdf(13 kb)
2 Second, Third and Fourth Quarter 1998 Sampling Events(2-1)
2.1 Description of Activities (2-1)
2.1.1 First Quarter (2-2)
2.1.1 Second Quarter (2-2)
2.1.2 Third Quarter (2-2)

2.2 Analytical Results (2-2)
First Quarter (2-2)
2.2.1 Second Quarter (2-2)
2.2.2 Third Quarter (2-4)
section2.pdf(22 kb)
3 Discussion of First, Seconds, and Third Quarter 1998
Results (3-1)
3.1 Comparison of Water Levels (3-1)
3.2 Comparison of Quarterly Analytical Results (3-1)
3.2.1 TCE Concentrations (3-2)
3.2.2 PCE Concentrations (3-3)
3.2.3 Nitrate (3-4)
3.2.4 Other VOCs (3-4)
3.3 Concentration Contour Maps (3-31)
3.3.1 Interval Selection (3-5)
3.3.2 Estimated Areal Extent (3-5)
3.3.3 Upper Interval (3-6)
3.3.4 Lower Interval (3-8)
section3.pdf(36 kb)
4 Summary of 1998 RI Sampling Program (4-1)
4.1 Quarterly Sampling Activities (4-1)
4.1.1 Description of Activities (4-1)
4.1.2 TCE Concentrations (4-1)
4.1.3 PCE Concentrations (4-2)
4.1.4 Other VOCs (4-2)
4.1.5 Nitrate (4-2)
4.1.6 Perchlorate (4-3)
4.1.7 Metals (4-3)
4.1.7 Other Analytical Parameters (4-3)
section4.pdf(17 kb)
5 Sampling Program Re-evaluation (5-1)
5.1 Criteria for Re-evaluation (5-1)
5.2 Recommendations (5-2)
section5.pdf(23 kb)
References (6-1) section6.pdf(10 kb)
(Appendixes are not available for downloading)
Appendix A: RI Monitoring Well Completion Data
Appendix B: Rationale for Selection of Representative
Monitoring Well Data
Appendix C: RI Monitoring Well Submersible Pump
Installation Data
Appendix D: First, Second, and Third Quarter
Chain-of-Custody Forms
Appendix E: 9;First, Second, and Third Quarter Summary of
Detected Compounds
Appendix F: 9;First, Second, and Third Quarter Quality
Assurance Sample Data
Appendix G: TCE Contamination in Shallow Zone in 1998
Appendix H: PCE Contamination in Shallow Zone in 1998
Tables (Page)

1-1 Wells Sampled-First, Second, and Third Quarters-1998
(1-3)
table1-1.pdf(9 kb)
2-1 Groundwater Elevations-First, Second, and Third
Quarters-1998 (2-5)
2-2 Final Field Measurements-First, Second, and Third
Quarters-1998 Sampling Events (2-12)
table2-2.pdf(23 kb)
2-3 Standards for Selected Organic Compounds, Metals, and
Inorganic Compounds (2-19)
table2-3.pdf(29 kb)
2-4 Analytical Methods and Detection Limits for Groundwater
Sample Parameters (2-21)
table2-4.pdf(7 kb)
2-5 Summary of TCE, PCE, and Nitrate-First Quarter-1998
(2-22)
table2-5.pdf(12 kb)
2-6 Summary of TCE, PCE and Nitrate-Second Quarter-1998
(2-24)
table2-6.pdf(12 kb)
2-7 Summary of TCE, PCE, and Nitrate-Third Quarter-1998
(2-26)
table2-7.pdf(12 kb)
2-8 General Water Chemistry-Second Quarter-1998 Sampling
Event (2-28)
table2-8.pdf(15 kb)
2-9 Summary of Metals Exceeding MCLs-Second
Quarter-1998 (2-30)
table2-9.pdf(10 kb)
3-1 Maximum and Minimum Detected TCE Values-First
Quarter-1998 (3-9)
table3-1.pdf(18 kb)
3-2 Maximum and Minimum Detected TCE
Values-Second Quarter-1998 (3-12)
table3-2.pdf(18 kb)
3-3 Maximum and Minimum Detected TCE Values-Third
Quarter-1998 (3-15)
table3-3.pdf(18 kb)
3-4 Maximum and Minimum Detected PCE Values-First
Quarter-1998 (3-18)
table3-4.pdf(18 kb)
3-5 Maximum and Minimum Detected PCE
Values-Second Quarter-1998 (3-21)
table3-5.pdf(18 kb)
3-6 Maximum and Minimum Detected PCE
Values-Third Quarter-1998 (3-24)
table3-6.pdf(18 kb)
3-7 Maximum and Minimum Detected Nitrate (as NO3)
Values- First Quarter-1998 (3-27)
table3-7.pdf(20 kb)
3-8 Maximum and Minimum Detected Nitrate (as NO3)
Values- Second Quarter-1998 (3-30)
table3-8.pdf(20 kb)
3-9 Maximum and Minimum Detected Nitrate (as NO3)
Values- Third Quarter-1998 (3-33)
table3-9.pdf(20 kb)
3-10 Summary of VOCs Exceeding MCLs-First
Quarter-1998 (3-36)
table3-10.pdf(11 kb)
3-11 Summary of VOCs Exceeding MCLs-Second
Quarter-1998 (3-38)
table3-11.pdf(10 kb)
3-12 Summary of VOCs Exceeding MCLs-Third
Quarter-1998 (3-40)
table3-12.pdf(10 kb)
4-1 Summary of TCE Values-First, Second, and Third
Quarters-1998 (4-4)
table4-1.pdf(15 kb)
4-2 Summary of PCE Values-First, Second, and Third
Quarters-1998 (4-7)
table4-2.pdf(14 kb)
4-4 Summary of Nitrate Values-First, Second, and Third
Quarters-1998 (4-10)
table4-3.pdf(15 kb)
5-1 Assignment of RI Monitoring Wells1998 Sampling
Program (5-2)
table5-1.pdf(9 kb)
5-2 Recommendations for Number of RI Wells 1998
Sampling Frequency (5-3)
table5-2.pdf(9 kb)
Figures (Page)

1-1 Site Location Map (1-4)
1-2 Location Map of RI Wells (1-5)
3-1 Hydrographs of RI Monitoring Wells (3-42)
fig3-1.pdf(895 kb)
3-2 Historical Chemical Concentration of TCE for RI
Monitoring Wells (3-51)
fig3-2.pdf(962 kb)
3-3 Historical Chemical Concentration of PCE for RI
Monitoring Wells (3-60)
fig3-3.pdf(960 kb)
3-4 Historical Chemical Concentration of Nitrate for RI
Monitoring Wells (3-69)
fig3-4.pdf(1029 kb)
3-5 Location of Wells used for Preparing Plume Maps
(3-78)
fig3-5.pdf (288 kb)
3-6 TCE Contamination in Shallow Zone in 1998 (3-79) fig3-6.pdf(434 kb)
3-7 PCE Contamination in Shallow Zone in 1998 (3-80) fig3-7.pdf(432 kb)
3-8 NO3 Contamination in Shallow Zone in 1998 (3-81) fig3-8.pdf(401 kb)
3-9 TCE Contamination in Deeper Zone in 1998 (3-82) fig3-9.pdf(413 kb)
3-10 PCE Contamination in Shallow Zone in 1998
(3-83)
fig3-10.pdf(412 kb)
3-11 N03 Contamination in Deeper Zone in 1998 (3-84)
fig3-11.pdf(395 kb)


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