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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
08/01/96 1995 Groundwater Quality Monitoring Report

San Fernando Valley

1995 Groundwater Quality
Monitoring Report

Table of Contents
Title Page title.pdf(6 kb)
Section (Page)
1 Introduction (1-1)
1.1 Setting (1-1)
1.2 Background (1-2)
1.3 Report Organization (1-2)
section1.pdf (11 kb)
2 Third and Fourth Quarter 1995 Sampling Events(2-1)
2.1 Description of Activities (2-1)
2.1.1 Third Quarter (2-2)
2.1.2 Fourth Quarter (2-2)

2.2 Analytical Results (2-3)
2.2.1 Third Quarter (2-3)
2.2.2 Fourth Quarter (2-4)
section2.pdf(17 kb)
3 Discussion of Third and Fourth Quarter 1995
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 (3-4)
3.2.3 Nitrate (3-4)
3.2.4 Other VOCs (3-5)
3.3 Concentration Contour Maps (3-5)
3.3.1 Interval Selection (3-6)
3.3.2 Estimated Areal Extent (3-6)
3.3.3 Upper Interval (3-7)
3.3.4 Lower Interval (3-9)
section3.pdf(32 kb)
4 Summary of 1995 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 (4-2)
4.1.3 PCE Concentrations (4-3)
4.1.4 Other VOCs (4-3)
4.1.5 Nitrate (4-4)
4.1.6 Other Analytical Parameters (4-4)
4.2 Additional Special Sampling Activities (4-5)
4.2.1 Hexavalent Chromium Sampling (4-5)
4.2.2 Landfill-Areas Special Sampling Activities (4-7)
section4.pdf (35 kb)
5 Sampling Program Re-evaluation (5-1)
5.1 Criteria for Re-evaluation (5-1)
5.2 Recommendations (5-3)
section5.pdf (14 kb)
References (R-1) refernce.pdf(7 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: Third, and Fourth Quarter
Chain-of-Custody Forms
Appendix E: Third and Fourth Quarter Summary of
Detected Compounds
Appendix F: Third, and Fourth Quarter Quality
Assurance Sample Data
Appendix G: TCE Contamination in Shallow Zone in Fall1995
Appendix H: PCE Contamination in Shallow Zone in Fall1995
Tables (Page)

1-1 Wells Sampled- Third and Fourth Quarters-1995
(1-4)
table1-1.pdf (6 kb)
2-1 Groundwater Elevations- Third, and Fourth
Quarters-1995 (2-5)
table2-1.pdf(15 kb)
2-2 Final Field Measurements- Third and Fourth
Quarters-1995 Sampling Events (2-10)
table2-2.pdf(15 kb)
2-3 Standards for Selected Organic Compounds, Metals, and
Inorganic Compounds (2-13)
table2-3.pdf (14 kb)
2-4 Analytical Methods and Detection Limits for Groundwater
Sample Parameters (2-16)
table2-4.pdf(7 kb)
2-5 Summary of TCE, PCE, and Nitrate- Third Quarter -1995
(2-17)
table2-5.pdf(7 kb)
2-6 Summary of TCE, PCE and Nitrate- Third Quarter-1995
(2-18)
table2-6.pdf(11 kb)
2-7 General Water Chemistry-Fourth Quarter-1995 Sampling
Event (2-20)
table2-7.pdf(10 kb)
2-8 Summary of Metals Exceeding MCLs-Fourth
Quarter-1995 (2-22)
table2-8.pdf (5 kb)
3-1 Maximum and Minimum Detected TCE Values-
Third Quarter-1995 (3-11)
table3-1.pdf(12 kb)
3-2 Maximum and Minimum Detected TCE Values-
Fourth Quarter-1995 (3-13)
table3-2.pdf(13 kb)
3-3 Maximum and Minimum Detected PCE Values-
Third Quarter-1995 (3-15)
table3-3.pdf(12 kb)
3-4 Maximum and Minimum Detected PCE Values-
Fourth Quarter-1995 (3-17)
table3-4.pdf(12 kb)
3-5 Maximum and Minimum Detected NO3
Values- Third Quarter-1995 (3-19)
table3-5.pdf (12 kb)
3-6 Maximum and Minimum Detected NO3
Values- Fourth Quarter-1995 (3-21)
table3-6.pdf (13 kb)
3-7 Summary of VOCs Exceeding MCLs- Third
Quarter-1995 (3-23)
table3-7.pdf(6 kb)
3-8 Summary of VOCs Exceeding MCLs-Fourth
Quarter-1995 (3-24)
table3-8.pdf(6 kb)
4-1 Wells Sampled - 1995 (4-13) table4-1.pdf(15 kb)
4-2 Groundwater Elevations 1995 Sampling Events
(4-14)
table4-2.pdf(25 kb)
4-3 Final Field Measurments 1995 Sampling Events
(4-21)
table4-3.pdf(48 kb)
4-4 Summary of TCE Values - Firrst through Fourth
Quarters - 1995 (4-27)
table4-4.pdf(28 kb)
4-5 Summary of PCE Values - First through Fourth
Quarters - 1995 (4-30)
table4-5.pdf(29 kb)
4-6 Summary of FOCs Exceeding MCLs - First through
Fourth Quarters, 1995 (4-33)
table4-6.pdf(7 kb)
4-7 Sumary of Nitrate Values - First through Fourth
Quarters, 1995 (4-34)
table4-7.pdf(30 kb)
5-1 Assignment of RI Monitoring Wells1995 Sampling
Program (5-2)
table5-1.pdf(7 kb)
Figures (Page)

1-1 Site Location Map (1-5)
fig1-1.jpg (78 kb)
1-2 Location Map of RI Wells (1-6) fig1-2.jpg(167 kb)
3-1 Hydrographs of RI Monitoring Wells (3-25) fig3-1.pdf(643 kb)
3-2 Historical Chemical Concentration of TCE for RI
Monitoring Wells (3-34)
fig3-2.pdf(486 kb)
3-3 Historical Chemical Concentration of PCE for RI
Monitoring Wells (3-43)
fig3-3.pdf(468 kb)
3-4 Historical Chemical Concentrations of Nitrate for RI
Monitoring Wells (3-52)
fig3-4.pdf(493 kb)
3-5 Location of Wells used for Preparing Plume Maps
(3-61)
fig3-5.jpg(163 kb)
3-6 TCE Concentration vs. Difference Between Water
Level and Screened Interval (3-62)
fig3-6.jpg(120 kb)
3-7 PCE Concentrations vs. Difference Between
Water Levels and Top of Screened Interval for RI
Monitoring Wells, Facility Wells, and Production
Wells (3-63)
fig3-7.jpg(116 kb)
3-8 NO3 Concentrations vs. Top of Screened Interval,
RI Monitoring Wells, Facility Wells, and Production
Wells-1995 (3-64)
fig3-8.jpg(140 kb)
3-9 San Fernando Valley Basin, TCE Contamination in
Shallow Zone, Fall 1995 (3-65)
fig3-9.jpg(283 kb)
3-10 San Fernando Valley Basin, PCE Contamination
in Shallow Zone, Fall 1995 (3-66)
fig3-10.jpg(280 kb)
3-11 San Fernando Valley Basin, N03 Contamination
in Shallow Zone, Fall 1995 (3-67)
fig3-11.jpg(262 kb)
3-12 San Fernando Valley Basin, TCE Contamination
in Deeper Zone, Fall 1995 (3-68)
fig3-12.jpg(265 kb)
3-13 San Fernando Valley Basin, PCE Contamination
in Deeper Zone, Fall 1995 (3-69)
fig3-13.jpg(264 kb)
3-14 San Fernando Valley Basin, N03 Contamination
in Deeper Zone, Fall 1995 (3-70)
fig3-14.jpg(243 kb)
4-1 Study Area and Subareas for Hexavelent
Chromium Investigation in SVB (4-37)
fig4-1.jpg(161 kb)
4-2 Location of RI and Facility Wells in Hexavelent
Investigation in SVB (4-38)
fig4-2.jpg(171 kb)
4-3 Location of Landfills and Wells in North Hollywood
Area (4-39)
fig4-3.jpg(138 kb)


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