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PubMed · 11337952

Designing a library: everyone on the same page?

L Ludwig·J Shedlock·L Watson·K Dahlen·C Jenkins
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Abstract

Excerpts are presented from an interview by the Bulletin of the Medical Library Association buildings projects editor with four academic health sciences library directors: one who had recently completed a major library building project and three who were involved in various stages of new building projects. They share their experiences planning for and implementing library-building programs. The interview explores driving forces leading to new library buildings, identifies who should be involved, recalls the most difficult and exciting moments of the building projects, relates what they wished they had known before starting the project, assesses the impact of new library facilities on clients and services, reviews what they would change, and describes forces impacting libraries today and attributes of the twenty-first century library.

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ArchitectureFacility Design and ConstructionLibraries, MedicalPolicy MakingTechnology Assessment, BiomedicalUnited StatesWorkforceInterview

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L Ludwig, J Shedlock, L Watson, K Dahlen, C Jenkins. 2001. Designing a library: everyone on the same page?. https://pubmed.ncbi.nlm.nih.gov/11337952/

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PubMed2006

A mass balance approach for evaluating leachable arsenic and chromium from an in-service CCA-treated wood structure.

Many existing residential wood structures, such as playsets and decks, have been treated with chromated copper arsenate (CCA). This preservative chemical can be released from these structures incrementally over time through contact with rainfall. The objective of this study was to evaluate the levels of arsenic and chromium leached from an in-service CCA-treated deck exposed to rainfall, as well as their possible impacts on soils and shallow groundwater. Two monitoring stations, one containing a CCA-treated deck and the other containing an untreated deck as a control, were constructed outside for this study. Rainfall, runoff water from the decks, soils below the decks, and infiltrated water through 0.7-m depth of soil were monitored for arsenic and chromium over a period of 3 years. The concentration of the CCA-treated deck runoff for arsenic (0.114-4.66 mg/L) and chromium (0.008-0.470 mg/L) were significantly (p<0.001) higher than the untreated deck runoff (< or =0.002 mg/L for both). During the 3-year monitoring period, 13% of the arsenic and 1.4% of the chromium were leached from the amount initially present in the CCA-treated wood. Arsenic levels (<0.1-46 mg/kg) in soils under the CCA-treated deck were significantly (p<0.001) higher than under the untreated deck (<0.1-2.7 mg/kg), while chromium levels were statistically the same below the two decks (2.4-9.6 mg/kg). Approximately 94% of the arsenic from the runoff was absorbed in the soils below the CCA-treated deck; the upper 2.5 cm of the soils captured 42% of the total. The infiltrated water concentrations for arsenic (<0.001-0.085 mg/L) and chromium (<0.001-0.010 mg/L) below the CCA-treated deck were both significantly (p<0.001) higher than below the untreated deck (< or =0.006 mg/L). The amounts of arsenic found in the infiltrated water below the CCA-treated deck represented 6% of total arsenic leached and less than 0.7% of the initial mass in the wood. The study demonstrated that exposure of a CCA-treated deck to rainfall resulted in elevated arsenic concentrations in both runoff and soil. Although only a relatively small fraction of the initial arsenic from the wood was found to infiltrate through the soil, these impacts were significant and caused the infiltrated water to exceed drinking water standards. The study suggests that potential exposures to arsenic exist indirectly through an environment that is contaminated with arsenic leached from in-service CCA-treated wood.

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