Project Description

Robinson Land Development (RLD) were retained to provide a servicing, grading and stormwater management (SWM) design for the redevelopment of the existing 2.3 Ha Ed Huck Marine site in Rockport, Ontario. The site is intended to be redeveloped with five new seasonal residential condo buildings, refurbishment of the existing marina site buildings, provision of new and revisions to parking areas, and adjustments to the main site access road.

In general, the on-site servicing design included new drilled wells for water supply, new sanitary and storm sewer servicing infrastructure, and a private sewage treatment plant to collect and treat sewage flows that discharges directly into the St. Lawrence River.

The Cataraqui Region Conservation Authority (CRCA) required Enhanced Level quality control of stormwater runoff but no quantity or erosion control mitigating measures were required. To meet the Enhanced Level quality control, the stormwater runoff will be conveyed to multiple on-site oil/grit separators before discharging to the St. Lawrence River. The use of low impact development (LID) infiltrative measures were also requested in order keep the site more vegetated and to lessen the impact on the hydrologic cycle.

Ministry of the Environment, Conservation, and Parks (MECP) approval was obtained for the proposed stormwater management measures as well as the private wastewater treatment facility.
Due to the proposed mixed use and the sensitive location of the existing marina site, there are a number of unique challenges that were addressed by the proposed servicing, grading and stormwater management design. Specifically, the following are the main hurdles that have been identified and addressed by the proposed design:

Wave Uprush

The requirement of a Wave Uprush analysis to identify a more stringent development limit hampered the placement of buildings and servicing infrastructure for the site

Private On-Site Wastewater Treatment

Due to the density of the development the near surface bedrock and water table, septic beds were not feasible and consequently a private on-site wastewater treatment facility was proposed with an outlet directly to the St. Lawrence River. This necessitated further studies and MECP and Fisheries and Oceans Canada (DFO) approval.

Archaeology

Due to the site location (next to the St. Lawrence River) an archaeological study was required even though it was already actively used as a marina for the past 150 years. The study identified a number of archaeologically significant areas. These findings necessitated further studies and field excavation to expose and catalogue any artifacts. The areas excavated and the findings of the studies also impacted the placement of buildings and servicing infrastructure.

Dry Hydrant

As a condition of development, a dry hydrant was provided on-site for use by the local area fire department for the benefit of the community and not just the site itself. This necessitated a special design to allow water to be taken from the St. Lawrence at all times of the year, as well as being placed in an ideal location on the site for ease of access by the local fire department.

Provincially Significant Wetland

The proximity to a provincially significant wetland (directly adjacent to the redevelopment site) has also impacted building and servicing infrastructure placement.

Floodplain

A number of existing buildings and parking areas slated for revision are currently located in the existing floodplain. In addition, new buildings were required to be situated in not as an ideal location on site in order to respect the floodplain limits. The Conservation Authority would not allow a balanced cut/fill for the site and as such the impacts to buildings, servicing infrastructure types and locations were substantial.

Project Description

Robinson Land Development (RLD) were retained to provide a servicing, grading, and stormwater management (SWM) design for a proposed three building campus located at 383/ 385 Terry Fox Drive in the City of Ottawa, Ontario. The industrial zoned site included one existing building and two new 5-storey buildings with associated parking.

The project also included road modifications (RMA) for the extension of the existing Hines Road to provide an additional access to the campus.

The portion of the site to be developed was 7.44 hectares in area and was bounded by existing developments on all four sides. Due to the high imperviousness of the site, four on-site SWM facilities were constructed to meet the quantity and quality storage requirements. The facilities were designed to provide level two protection by the use of river stone, granular, and sand layers to filter the runoff. Inlet control devices (ICD) were utilized in the outlets of each facility to control the rate of the stormwater outflow from the site.

The site grading involved the detailed grading design of over 35,000 square metres of asphalt area which was accomplished via minimal underground infrastructure. Specifically, the majority of the site was designed to sheet flow to the on-site SWM facilities.

The proposed buildings were serviced with water and sanitary via connections to the existing infrastructure within Hines Road. The buildings were also provided with storm services via a connection to the existing storm sewer located on the adjacent 5050 Innovation site.

RLD was also engaged to seek approvals for Environmental Compliance Applications (ECA) which required extensive facilitation with the MOECC, City and neighbouring property (which contained an existing SWM facility previously designed to control and treat drainage from a portion of the site). Due to the complexity of the project, four ECA applications were required to be submitted to the MOECC for the site.

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.