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The following documents relate to the completed U.S. Environmental Protection Agency (USEPA) Investigations of Operable Units OU1 (Front Street site) and OU3 (old city dump)—2003

 

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11-20-03 -The following are the USEPA Record of Decision Documents (ROD) for addressing the contamination at Operable units OU1 (Front Street Site) and OU3 (old city dump).
ROD for OU1 (9-30-03) (493 KB) Link to the complete document in PDF format.
ROD for OU3 (9-30-03) (290 KB) Link to the complete document in PDF format.
 
7-24-03 -The following are the USEPA proposed plans for addressing the contamination at Operable units OU1 (Front Street Site) and OU3 (old city dump).
Proposed Plan OU1 (7-24-03) (169 kb) Proposed Plan for Operable Unit OU1 (Front Street Site). [This proposed plan, which is released for public comment, discusses how the USEPA proposes to address contamination at OU1. A summary of the site contamination and remedial alternatives is presented and the USEPA's rationale for selecting the proposed preferred alternative].
Proposed Plan OU3 (7-24-03)  (509 kb) Proposed Plan for Operable Unit OU3 (Old City Dump).  [This proposed plan, which is released for public comment, discusses how the USEPA proposes to address contamination at OU3. A summary of the site contamination and remedial alternatives is presented and the USEPA's rationale for selecting the proposed preferred alternative].
 
The following are excerpts from the Focused Remedial Investigation Report for Operable Units OU1(Front Street site) and OU3 (old city dump).
Complete Remedial Investigation Report
(216 mb)
The complete Remedial Investigation Report (3 volumes) for operable OU1 (Front Street Site) and OU3 (old city dump) are available on CDROM upon request from the USEPA project manager, Jeff Field, Field.Jeff@epamail.epa.gov.
RI_exec_OU1-OU3.pdf (137 kb) Executive summary from the Focused Remedial Investigation of Operable Units OU1 and OU3 (2003). [General summary of the extent and magnitude of contamination, ecologic and human-health risks]
RI_OU1_ra-sum.pdf (269 kb) OU1 RI risk assessments and summary and conclusions -- Sections 4.6-4.7 from the Focused Remedial Investigation  of OU1 and OU3 (2003). [These sections summarize results of the human-health and ecological risk assessments and present the general summary and conclusions from the RI for OU1]
RI_section4-OU1.pdf (2.43 mb) OU1 RI -- Section 4 of the Focused Remedial Investigation of OU1 and OU3 (2003) [This is the complete text and low resolution illustrations from section 4 of the RI that discusses OU1]
RI_section5-OU3.pdf (885 kb) OU3 RI -- Section 5 of the Focused Remedial Investigation of OU1 and OU3 (2003) [This is the complete text and low resolution illustrations from section 5 of the RI that discusses OU3]
 
Excerpts from the Feasibility Study Report for Operable Units OU1 (Front Street site ) and OU3 (old city dump).
FS-exec_OU1.pdf(116 kb) Executive summary from the Feasibility Study Report for OU1 done by Black and Veatch Special Projects Corp (2003). [General summary of the engineering analysis of possible remedial alternatives for OU1]
table FS-es1_OU1.pdf(95 kb) Remedial action objectives and general response actions for OU1
table FS-es2_OU1.pdf(126 kb) Comparative analysis of alternatives for OU1. [This is a summary table summarizing and comparing nine possible remedial alternatives for OU1]
FS-exec_OU3.pdf(93 kb) Executive summary from the Feasibility Study Report for OU3 done by Black and Veatch Special Projects Corp (2003). [General summary of the engineering analysis of possible remedial alternatives for OU3]
table FS-es1_OU3.pdf (81 kb) Remedial action objectives and general response actions for OU3
table FS-es2_OU3.pdf (102 kb) Comparative analysis of alternatives for OU3. [This is a summary table summarizing and comparing nine possible remedial alternatives for OU3]
The following is information from the Ecological Risk Assessment for the entire Riverfront Superfund site (all operable units).
Ecological Risk Assessment.pdf(1.09 mb) Ecological Risk Assessment --Complete document less figures. Figures are removed from this version to limit file size. See following for figures
Ecological Risk Assessment figures (46 mb) Figure and photos from the Ecological Risk Assessment
Baseline Human-Health Risk Assessments for Operable Units OU1 (Front Street site ) and OU3 (old city dump).
OU1-Base_risk.pdf (1.4 mb) Baseline Risk Assessment for OU1, prepared by the Missouri Department of Health and Senior Services (2003). Complete document excluding appendices
OU3-Base_risk.pdf (467 kb) Baseline Risk Assessment for OU3, prepared by the Missouri Department of Health and Senior Services (2003). Complete document excluding appendices.
 


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