Project Description

The Chenier-Jeaurond Municipal Drain is a new drain, petitioned by local property owners Under Section 4 of the Ontario Drainage Act, R.S.O., 1990. Property owners were concerned that the existing watercourse comprised of an Award Drain (constructed in the late 1800s under a predecessor to the Drainage Act), private ditches, and natural wet areas did not provide sufficient outlet to protect crops during the growing season. Improvement and incorporation as a municipal drain was required to accommodate modern agricultural practices and allow for sufficient outlet and future maintenance.

The Township of North Glengarry appointed Robinson Consultants Inc. under Section 8 of the Ontario Drainage Act, R.S.O. 1990, as the Drainage Engineer to prepare a report for the future construction of the Chenier-Jeaurond Municipal Drain.

Design included the deepening and widening of the existing watercourse, incorporation as a municipal drain and establishing permanent sediment and erosion control features. Provisions were made for private farm crossings that accommodated modern farming equipment and sufficient outlet for surface and subsurface (tile) drainage. Special consideration was given to address the concerns of environmental agencies including the Department of Fisheries and Oceans, Raisin Region Conservation Authority, and the Ministry of Natural Resources.

Project Description

Robinson Consultants Inc. was retained by the City of Ottawa to undertake the preliminary and detailed design for the slope stabilization and erosion control at four locations on Cardinal Creek. The toe of slope at three of these locations was showing signs of erosion caused by the creek. Two of the sites showed evidence of active sloughing on the bank of the creek channel which had created steep slopes without any vegetation. A fourth site was not carried forward to design after a detailed field review and analysis concluded it to be of low risk. Slope stabilization and erosion control measures included reinforced soil system to stabilize slopes, erosion and scour protection at the toe of slope, and a planting plan with suitable native species to enhance slope stability. Site access and construction staging was a challenging issue due to the steep slopes and remote location of the sites. One of the sites was located entirely on private property.

Several activities were completed to assess the suitability of the proposed slope stabilization measures including: assessment of water levels and velocities within the creek, topographic survey in remote area with challenging conditions, constructability review, natural environment study, geotechnical investigation, slope stability analysis, Stage 1 archeological assessment, tree inventory and consultation with environmental regulatory agencies. Following the detailed assessments, Robinson Consultants Inc. completed the preliminary and detailed design including site access plans, temporary flow control, landscaping plans, and guiderail design. Robinson Consultants Inc. also prepared tender documents in accordance with the City of Ottawa standards, attended meetings with private property owners, and obtained the necessary environmental approvals.

Project Description

Robinson Land Development (RLD) were retained to provide detailed servicing, grading, and stormwater management design for a proposed residential subdivision located at 6279 Fernbank Road in the City of Ottawa, Ontario. The proposed infill subdivision includes a variety of townhome blocks, semi-detached dwellings and single-family homes for a total of 148 residential units. Included in the development design is a park space, stormwater management (SWM) facility and an oil grit separator to provide quality treatment.

Due to the scrutiny associated with the project the design was constrained by decisions resulting from the Ontario Municipal Board (OMB) process in addition to City of Ottawa special requests (such as reducing the storm outflow from the site). The subdivision is also adjacent to an Urban Natural Feature (UNF) along the eastern boundary and bounded by existing residential homes around the remaining site perimeter which provided a challenge with respect to the grading drainage and SWM design.

Due to the complexity of the stormwater management, RLD worked in conjunction with J.F. Sabourin and Associates Inc. in modelling of the stormwater flows and access the interaction of the proposed development with the adjacent UNF.

Project Description

The original Monahan Creek Municipal Drain was constructed in 1968. At that time, the drain served a largely rural/agricultural area. Subsequent years saw significant urban development in the upper reaches of the drain which included abandonment, improvements, sections incorporated as storm sewers, and the development of an urban constructed wetland stormwater management facility. However, during this period the downstream end of the drain and outlet capacity remained unchanged.

The City of Ottawa appointed Robinson Consultants Inc. under Section 78 of the Ontario Drainage Act, R.S.O. 1990, as the Drainage Engineer for modification and improvement of the Monahan Creek Municipal Drain.

Initial review indicated that the original 1968 design could no longer provide sufficient outlet for the growing urban infrastructure.

Design included the deepening and widening of the drain and establishing permanent sediment and erosion control features as well as special design for the replacement of six low-level crossings. The design incorporated provisions to address the concerns of environmental agencies including the Department of Fisheries and Oceans, Rideau Valley Conservation Authority, and the Ministry of Natural Resources. Best management practices were developed and successfully implemented to allow for authorization, permitting, and the protection of endangered species.