Lot Grading Plan Approval

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A Lot Grading Plan (Surface Drainage Plan) has been a part of the approval process for commercial and multi-family properties since 1993. The plan is required for new developments and approved by the City of Edmonton, Development Services on behalf of City Council.

This plan specifies design elevations, surface gradients, swale locations, and other drainage information required for lot grading. The approval of this plan provides an effective basis for lot grading control which will establish the drainage relationship between abutting properties.

The example drawings of Lot Grading Plans for multi-family, typical commercial, and shopping centre provide general information of what should be shown on the plan (for reference only).

Application

Upon application for a development permit for any land zoned Commercial, Industrial, Multi-family, Apartment, Row Housing, and Urban Services, the developer has to submit a proposed Lot Grading Plan and a Site Mechanical Plan to EPCOR Water Services Inc. Infill Water and Sewer Servicing.

This plan must be reviewed and approved by EPCOR Water Services Inc. and the City of Edmonton Development Services Lot Grading within 60 days of the application of the development permit.

It is the owner’s/developer’s responsibility to make a request to EPCOR for the installation of new water and/or sewer services, or modification of existing services at the owner’s expense. EPCOR is responsible for the construction of the services from the EPCOR mains to the property line only.

The owner/developer is responsible for all works on private property. Only EPCOR crews are allowed to perform work within utility right-of-ways and construct services from the mains to the property line.

Plan Requirements

A scale drawing of the property in metric units, designed and certified by a Professional acceptable to the City Manager (for example, Professional Engineer, Registered Architect, Professional Technologist)
Existing surface elevations, contours, and surface grades of the property based on geodetic datum
Proposed geodetic surface elevations at the property corners and at intervals around the perimeter of the property
Proposed geodetic surface elevations adjacent to the foundation walls or concrete slab-on-grade for proposed buildings
Proposed directions of surface drainage flow, indicated by arrows
Proposed locations and gradients of swales
Cross-section details of proposed swales
Proposed surface conditions such as sod, asphalt, concrete, or gravel
Provisions for accommodating overland flows from adjacent undeveloped lands
Site Contained, private storm drainage system demonstrating compliance with the Drainage Bylaw and EPCOR Drainage Services and Wastewater Treatment Bylaw
Facilities and means demonstrating compliance stormwater management controls and storage requirements (Maximum 5% of hard surface area permitted to spill directly to City right-of-way)
Information referring to Geotechnical Reports produced by a Geotechnical Engineer when unusual or special requirements are needed
Property information: Legal description, subdivision or neighbourhood, property address or road names, and north arrow
Project information: Project name, applicant information, development boundary, revision box, legend, and notes
Space near the bottom right corner of the plan for the approval stamp

Approval Procedure

EPCOR Water Services Inc., Infill Water and Sewer Servicing reviews Lot Grading Plan on behalf of the City of Edmonton along with Site Mechanical Plans for Commercial and Multi-Family Service Connections. City of Edmonton, Development Services will send a letter to the applicant after EPCOR'S review of the proposed Lot Grading Plan, notifying the applicant whether the plan is approved or needs revision. If revisions are required, the applicant is responsible for revising and resubmitting the Lot Grading Plan for further review within 60 days.

Once the proposed Lot Grading Plan is approved, it will be stamped and signed and returned to the applicant. This approved plan then becomes the Lot Grading Plan for the site.

If changes to the approved Lot Grading Plan are required, a revised drawing (redline revision) must be sent to EPCOR Water Services Inc. Infill Water and Sewer Servicing and the City of Edmonton Development Services Lot Grading for review and approval. Once approved, this revised Lot Grading Plan will supersede the previously approved Lot Grading Plan.

For more information contact EPCOR Water Services Inc., Infill Water and Sewer Servicing at 780-496-5444 or wass.drainage@epcor.com