Main Report - Newhall Remediation Project

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Table of ContentsSummary......................................................................................................................... 1 Purpose............................................................................................................................ 4 Background..................................................................................................................... 4 Public Health Actions Taken............................................................................... 6 Demographics...................................................................................................... 8 Discussion........................................................................................................................ 9 Environmental Data............................................................................................ 9 Exposure Pathways............................................................................................. 15 Public Health Implications for Adults and Children............................................ 16Health Outcome Data............................................................................................ 21 Evaluation of Community Health Concerns..................................................................... 22 Conclusions....................................................................................................................... 25 Recommendations............................................................................................................. 26Public Health Action Plan................................................................................................ 27 References........................................................................................................................ 29 Attachment A: Figure 1Attachment B: Fact Sheets—Ways to Reduce Your Exposure to Soil, Safe Gardening, Summaryof Public Health AssessmentAttachment C: Community Health Concerns Interview FormAttachment D: Letter from CT DPH to EPAAttachment E: CT DPH Cancer EvaluationAttachment F: General Toxicological and Epidemiological Information for Lead,Arsenic, and PAHsAttachment G: Risk CalculationsAttachment H: ATSDR Conclusion CategoriesAttachment I: ATSDR Glossary of Environmental Health TermsAttachment J: Response to Comments
The conclusions and recommendations in this Public Health Assessment are based on the dataand information made available to the Connecticut Department of Public Health and the Agencyfor Toxic Substances and Disease Registry. The Connecticut Department of Public Health andthe Agency for Toxic Substances and Disease Registry will review additional information whenreceived. The review of additional data could change the conclusions and recommendationslisted in this document.SummaryThe Newhall Street neighborhood that is the focus of this Public Health Assessment is located inthe southern portion of the town of Hamden, Connecticut. It is an approximately 11-block areathat includes residences, nearby Hamden Middle School, and two town parks (Rochford Fieldand Mill Rock Park). The area was used for disposal of domestic and industrial waste during the1930s, 1940s, and 1950s. Many of the homes in the Newhall Street neighborhood were built ontop of landfill waste.The purpose of this Public Health Assessment (PHA) is to evaluate environmental sampling datafrom residential yards in the Newhall Street neighborhood, in Hamden, Connecticut, todetermine whether landfill waste materials present a public health hazard. This PHA builds uponresults of several health consultations and a PHA previously prepared by the ConnecticutDepartment of Public Health (CT DPH) (under a cooperative agreement with the Agency forToxic Substances and Disease Registry [ATSDR]). These previously prepared documentsaddress the public health significance of landfill waste materials at the Hamden Middle School,two town parks, and the Newhall Street School, all located in the Newhall Street neighborhood.This PHA builds upon information contained in the previous evaluations, but data analyzed inthis document have not been evaluated previously.Environmental investigations in the Newhall Street neighborhood have focused on surface andsubsurface soils from residential yards. Investigations have found elevated levels of lead,polycyclic aromatic hydrocarbons (PAHs), and arsenic in both surface and subsurface soils.These results are consistent with sampling data from other areas in the neighborhood wherelandfill waste was disposed (for example, Hamden Middle School, Rochford Field, and MillRock Park). In 2001 and 2002, the U.S. Environmental Protection Agency (EPA) removedcontaminated soils at 13 residential properties because surface soil contamination was so highthat immediate action was needed to reduce exposure.To evaluate public health implications from contaminants in soil in the Newhall Streetneighborhood, CT DPH first considered the available environmental data and how people mightbecome exposed to contaminants. If there is no exposure, there is no threat to public health. Incases where exposure is possible, CT DPH compared maximum concentrations of contaminantswith health-protective comparison values. This screening step rules out exposures that have littlelikelihood of causing adverse health effects. When contaminant concentration exceededcomparison values, CT DPH further evaluated the exposures to determine the likelihood thatsuch exposures would result in adverse health effects.1
Page 1 and 2: NEWHALL STREET NEIGHBORHOOD(ALIASES
Page 3: Newhall Street Neighborhood(Aliases
Page 7 and 8: • QVHD should offer free blood le
Page 9 and 10: In January 2001, CT DEP began inves
Page 11 and 12: QVHD Lead Exposure Follow-Up Activi
Page 13 and 14: DiscussionThis section presents res
Page 15 and 16: contamination. It involved sampling
Page 17 and 18: Table 3. Summary of Surface Soil Sa
Page 19 and 20: Exposure PathwaysTo evaluate potent
Page 21 and 22: Public Health Implications of Lead
Page 23 and 24: soil removal actions by EPA in 2001
Page 25 and 26: well below the EPA reference dose (
Page 27 and 28: were consistent with natural backgr
Page 29 and 30: not tell you the source of the lead
Page 31 and 32: survey. CT DPH also recommends that
Page 33 and 34: Actions Planned1. CT DPH will conti
Page 35: Paneth NS. 1995. The problem of low

Main Report - Newhall Remediation Project

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