8/25/2023 0 Comments Ekman dredge smallThe preliminary report was originally prepared under contract by Beak Consultants and Ocean Chem Group. Mention of trade names and commercial products in this handbook does not constitute endorsement. The current revision incorporates the new sediment evaluation procedures from the ministry document entitled, “Guidelines for Identifying, Assessing and Managing Contaminated Sediments in Ontario: An Integrated Approach” ( OMOE, 2008) which replaces the Provincial Sediment Quality Guidelines (Persaud et al. This document is intended to be a reference handbook of dredging-disposal activities, the details of which may not be required on a routine basis. This handbook (Dredging and Dredged Material Disposal - Part III) has been prepared to assist dredging project proponents, OMOE staff and staff of other regulatory agencies in the selection of safe and appropriate management methods based on dredged material characteristics and current OMOE legislation. However, no changes were made to direction or guidance provided in this document. update references to legislation, policies, agencies, etc.). In 2011, minor modifications were made to this handbook to update sections with current information ( e.g. Part III continues to be available separately. In 1995, Parts I, II, IV and V were revised again to reflect more recent approaches to sediment and erosion control and were consolidated into one document entitled "Guidelines for Evaluation Construction Activities Impacting on Water Resources" (1995). Part V: Guidelines for small-scale waterfront projects (April 1986).Part IV: Guidelines for marine construction projects (April 1986).Sediment Sampling and Laboratory Analysis November 1990, Revised January 1994, Updated January 2011).Legislation, Policies, Sediment Classification & Disposal.Part III: Handbook for dredging and dredged material disposal in Ontario A, B, C.Part II: Guidelines for construction of highways and bridges (March 1984).Part I: Guidelines for construction of hydrocarbon transmission and distribution pipelines crossing water courses (March 1984).The revised guidelines were divided into five parts, as follows: The document was subsequently updated in 19. Careful release will distribute the sample approximately as it appeared on the bottom, making sediment profile description possible.įor questions on availability, Contact us or see our FAQ section.In l976, the Ontario Ministry of Environment ( OMOE) published the guideline "Evaluating Construction Activities Impacting on Water Resources" as an aid in the assessment of the environmental impact of construction activities. After closure, the dredge is pulled up to retrieve the sample. One of the jaws is fitted with an under lip to displace stones or gravel during closure. The impact of the dredge on the bottom surface triggers the spring-loaded release mechanism to close the sampler. A two-way mechanism prevents accidental closure while the dredge is dropping. ![]() The top of the sampling chambers are screened to allow water to flow through during deployment which will reduce displacement and shock wave effects that may cause sample loss. Sampler arms are made of powder-coated carbon steel. Sampler body and jaws are made of 300 series stainless steel. Nominal bucket dimensions are 9in wide X 4.5in height X 6in deep (circular shaped). bottom dredge will sink faster and push deeper into sediments. Bottom Dredges are primarily used to sample sand and silt but can be used to sample most types of non-cohesive material, except hard-packed clay.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |