Time filter

Source Type

Göteborg, Sweden

Fanning M.,WSP Environmental
Health estate | Year: 2011

The Department of Health (DH), Defra, and the Department for Transport, have recently announced the publication of the second edition of the Safe management of healthcare waste manual (known as Health Technical Memorandum 07-01). Here, one of the key authors, Mick Fanning, associate consultant at environmental, energy, and sustainability consultancy, WSP Environment and Energy, gives an idea of the scope of the new guidance, with input from Lorraine Holme, programme manager, Sustainable Development Department, at the Department of Health's Health Estates & Facilities Division. Source

Perhans K.,Swedish University of Agricultural Sciences | Glode D.,Mellanskog | Gilbertsson J.,WSP Environmental | Persson A.,Swedish Forest Agency | Gustafsson L.,Swedish University of Agricultural Sciences
Ecological Economics | Year: 2011

Retaining forest patches at final harvest is a key conservation measure in boreal forests, but guidelines for how to increase its cost-effectiveness are lacking. In a study in boreal Sweden, we compared the cost-effectiveness of three different approaches a forest owner may use to select patches: selection based on the conservation value of patches alone, economic cost alone or both of them combined. We also compared the cost-effectiveness of six different common types of patches. Conservation value was measured as species richness of bryophytes and lichens and as structural characteristics of patches. Compared to the selection approach in which both conservation value and cost were used, cost-effectiveness was 5-14% lower when only conservation value was used, depending on how conservation value was measured. On the contrary, using only the economic cost decreased the cost-effectiveness by only 1-2%. Among the patch types, swamp forest areas and deciduous tree groups were cost-effective types to retain. However, the patch types were complementary in their species composition and all hosted unique species. We argue that, ideally, assessments of both conservation values and economic costs of retaining patches should be made prior to harvest to enable planners to make well-informed and cost-effective decisions. © 2010 Elsevier B.V. Source

Ohrstrom E.,Gothenburg University | Gidlof-Gunnarsson A.,Gothenburg University | Ogren M.,Swedish Road and Transport Research Institute | Jerson T.,WSP Environmental
39th International Congress on Noise Control Engineering 2010, INTER-NOISE 2010 | Year: 2010

To provide additional knowledge on the long term effects of railway and road traffic noise socio-acoustic surveys were performed in two residential areas exposed to road traffic noise (highway and major roads) and two areas exposed to railway noise (124 trains per day). Results were obtained for 974 individuals exposed to comparative sound levels ranging from L Aeq,24h 45 to 65 dB. Road traffic caused significantly more noise annoyance than railway traffic, however, the difference decreased somewhat at higher sound levels above L Aeq,24h 60 dB. For L den the difference in annoyance between the two noise sources was larger and the difference increased at higher sound levels. At all sound levels, road traffic noise caused more disturbances of rest/relaxation (L Aeq,24h) and sleep quality (L night) but less disturbance of conversation than railway noise. It was concluded that noise from railway traffic overall causes less adverse health effects than road traffic noise, in cases with a relatively moderate number of trains per day. Source

Van Praagh M.,SWECO Environment | Van Praagh M.,Lund University | Modin H.,SWECO Environment | Trygg J.,WSP Environmental
Waste Management | Year: 2015

This study aims to verify the effect of physically removing the outer surface of contaminated concrete on total contents and on potential mobility of pollutants by means of leaching tests. Reclaimed concrete from 3 industrial sites in Sweden were included: A tar impregnated military storage, a military tar track-depot, as well as concrete constructions used for disposing of pesticide production surplus and residues. Solid materials and leachates from batch and column leaching tests were analysed for metals, Cl, F, SO4, DOC and contents of suspected organic compounds (polycyclic aromatic hydrocarbons, PAH, and pesticides/substances for pesticide production such as phenoxy acids, chlorophenols and chlorocresols, respectively). In case of PAH contaminated concrete, results indicate that removing 1 or 5mm of the surface lead to total concentrations below the Swedish guidelines for recycling of aggregates and soil in groundwork constructions. 3 out of 4 concrete samples contaminated with pesticides fulfilled Swedish guidelines for contaminated soil. Results from batch and column leaching tests indicated, however, that concentrations above environmental quality standards for certain PAH and phenoxy acids, respectively, might occur at site when the crushed concrete is recycled in groundwork constructions. As leaching tests engaged in the study deviated from leaching test standards with a limited number of samples, the potential impact of the leaching tests' equipment on measured PAH and pesticide leachate concentrations has to be evaluated in future work. © 2015 Published by Elsevier Ltd. Source

Sun X.,Swedish Museum of Natural History | Andersson P.,Swedish Museum of Natural History | Land M.,WSP Environmental | Humborg C.,University of Stockholm | Morth C.-M.,University of Stockholm
Journal of Analytical Atomic Spectrometry | Year: 2010

We demonstrate in this study that a single focusing multiple collector inductively coupled plasma mass spectrometer (MC-ICP-MS) equipped with a hexapole gas-collision cell (GV-instrument®Isoprobe) can precisely determine the δ29Si (2S.D., 0.2‰) using a total Si consumption of less than 14 nmole (390 ng Si). Testing and evaluation of background, rinse time, and major matrix effects have been performed in a systematic way to establish a procedure to measure δ29Si in small quantities. Chemical purification prior to analysis is required to remove potential interferences. For data collected during a four-year period, the average δ29Si value of IRMM-018 relative to NBS-28 was found to be -0.95‰ (n = 23, 2S.D. 0.16‰) with a 95% confidence interval (-0.95 ± 0.028‰). The mean δ29Si value of the Big-Batch standard was found to be -5.50‰ (n = 6, 2S.D. 0.26‰). Although determination of the δ30Si measurements is not possible, with our current instrument we demonstrate that this system provides a fast and long-term reliable method for the analysis of δ29Si in purified samples with low Si concentration (18 M Si). © 2010 The Royal Society of Chemistry. Source

Discover hidden collaborations