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Property Details for 308 Iowa Street


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Government
257291
308 Iowa Street SIOUX CITY, IA 51101
1.04
894728477003, 894728477004, and 894728477001
42.493464002616 / -96.394265972261
4
Foley, Charlie
foley.charlie@epa.gov
9135517710


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Property Location



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Property Progress


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CAs Associated with this Property

CA NameCA #StateTypeAnnouncement Year
Sioux City, City ofBF97787201IAAssessment2021


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Assessment Activities at this Property

ActivityEPA FundingStart DateCompletion DateCAAccomplishment Counted?Counted When?
Phase I Environmental Assessment$5,100.0008/17/202309/11/2023Sioux City, City ofYFY24
Phase II Environmental Assessment$6,200.0002/07/202404/15/2024Sioux City, City of


Is Cleanup Necessary? Yes
EPA Assessment Funding: $11,300.00
Leveraged Funding:
Total Funding: $11,300.00


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Climate Adaption and Mitigation - Planning or Assessment

Selected Strategy(ies)Explanatory Text
N/AThis property does not incorporate planning or assessment activities to address impacts from extreme weather events and natural disasters. If no activities were incorporated, select this option.


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Contaminants and Media


Asbestos
Lead
VOCs
NOT Cleaned up
NOT Cleaned up
NOT Cleaned up
Building Materials
Air
NOT Cleaned up
NOT Cleaned up


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Cleanup Activities

There are no current cleanup activities.


Cleanup/Treatment Implemented:
Cleanup/Treatement Categories:
Addl Cleanup/Treatment info:
Address of Data Source:
Total ACRES Cleaned Up: 1.04
Number of Cleanup Jobs Leveraged:
EPA Cleanup Funding:
Leveraged Funding:
Cost Share Funding:
Total Funding:


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Climate Adaption and Mitigation - Demolition or Cleanup

There is no data for Climate Adaption and Mitigation - Demolition or Cleanup.


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Institutional and Engineering Controls

U
U


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Redevelopment and Other Leveraged Accomplishments

Start DateLeveraged FundingCACompletion Date
09/11/2023$1,000,000.00Sioux City, City of09/12/2023


Number of Redevelopment Jobs Leveraged:
Actual Acreage of Greenspace Created:
Leveraged Funding:


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Climate Adaption and Mitigation - Redevelopment

There is no data for Climate Adaption and Mitigation – Redevelopment


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Additional Property Attributes

Available historical documents indicate the property contained commercial and residential development from approximately 1884-1902. Uses included a confectionary, grocery store, and a hotel with various "stores." It contained commercial and light industrial development from approximately 1920-1949. Uses included a warehouse, meat market, and hotel. It has contained light industrial development and a surface parking lot from approximately 1959-present. Uses included wholesale electrical supplies/household appliances company and an office supplies company. The City acquired the property for future redevelopment into the Innovation Center which will serve as an entrepreneurial center for the community.

A Phase II ESA conducted on the property included asbestos containing material (ACM) and lead-based paint (LBP) surveys that identified the presence of each throughout the structure. It also included collecting indoor air samples. Twenty-nine (29) volatile organic compounds (VOCs) were detected above laboratory report limits or as non-detect values above an applicable regional screening level (RSL) in sub-slab samples. Of these compounds, five (5) VOCs were detected above the residential indoor air RSL and nine (9) compounds were not detected at sample locations but it was reported as a non-detect value above an indoor air RSL. No sub-slab sample detections or non-detect values were reported above an industrial indoor air RSL. The reported concentrations and non-detect values for the fourteen VOCs were below the corresponding VISL values with the exception of one non-detect value that was in excess of the EPA VISL Residential value (1,2-dibromoethane). The same non-detect value was observed in indoor air samples and this compound was not detected in collected samples. Twenty-six (26) VOCs were detected above laboratory report limits or as non-detect values above an applicable RSL in indoor samples. Of these compounds, two (2) VOCs were detected above the residential and industrial indoor air RSLs, three (3) VOCs were detected above the residential indoor air RSL, and ten (10) compounds were not detected at any sample location but it was reported as a non-detect value above an air RSL.

Ethylbenzene and m-xylene & p-xylene were detected above their respective indoor air residential RSL and industrial RSL at IA2. This sample was collected from the existing utility room of the structure that is planned to be renovated. This area included or was located near a boiler, stained compressor, work bench with maintenance material, and where a previous report identified a UST. The reported concentrations were included in the risk calculations where possible.

The vapor results included in this study identified concentrations above EPA RSL values. The resulting risk calculations using these results were acceptable cancer and non-cancer risks for residential and non-residential site users based on the indoor air sample results.

Although the risk calculation for the site is acceptable, there were elevated indoor air concentrations that exceeded EPA RSLs including benzene, ethylbenzene, xylene, carbon tetrachloride, and tetrachloroethene. Benzene was detected at both indoor air locations, one sub-slab locations (SS1), and in the ambient sample above the residential RSL and below the industrial RSL. The two indoor air sample concentrations and the ambient concentration appear to be similar in concentration which could reflect a source both inside and outside of the structure. The one sub-slab result appeared higher and was observed in the area that is planned to be demolished and the concentration was observed below the VISL thresholds. The other sub-slab sample had an observed benzene concentration below both RSLs.

Ethylbenzene was reported in both indoor and sub-slab samples at concentrations above the residential RSL with the observed concentration at indoor air location IA2 above the residential and
Industry (1.04)


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Release 3.0.2