The Applications of Chemical Analyses of Sediments and Soils in ...

(total N and P, and Loss on Ignition) in connection with eutophication studies and weedharvesting in recreational lakes throughout the Province.HAMILTON HARBOUR RE-STRATIFICATIONThe laboratory is co-operating in a program to improve water quality in HamiltonHarbour by restratification through the injection of air.INDUSTRIAL SOLID WASTE DISPOSALIndustrial solid wastes must be acceptable for transport by a carrier and fordisposal at a landfill site. The laboratory is frequently asked to determine if variouswastes could release toxic leachate. Shake and column leach tests have been devisedusing various leaching solutions under aerobic or anaerobic conditions, followed byanalysis of leachate for parameters such as pH, condutivity and potentially toxic heavymetals (Darcel, 1975). Evaluations are also conducted on proprietary "fixed" solidwastes to test the effectiveness of immobilization of toxic constituents.INTERNATIONAL JOINT COMMISSIONLarge numbers of samples have been received for PLUARG and the Upper GreatLakes surveys as joint programs with state and federal agencies. The Ministry isprincipally involved in near-shore surveys. Major problems are to attempt tostandardize analytical methods used by various state, provincial and federallaboratories with different equipment and capacity capabilities and, where this is not43