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If your property lies within a regulated area, WHAT IS ? there are by-laws and legislation that may affect you directly. Ontario Regulation 166/06 Erosion is the process of soil movement primarily restricts and may prohibit the placement of fill by water or wind. Water erosion is the result within a regulated area, the construction and of water coming into contact with soil and renovation of structures within a moving it to a different location. The main (an area vulnerable to flooding) and the types of water based erosion are raindrop, alteration of a . If your property , and shore. Wind erosion is in a regulated area, you must apply for a can occur in any area where the soil is not Development, Interference with Wetlands compacted or is finely grained such as silt. and Alterations to a Shorelines and The three main ways that wind can move soil permit from TRCA to do any of the following: are , creep and suspension.

• Construction, reconstruction or erection of a building or structure

POOL Leaking or Splashing • Any change to a building or structure that saturates and weakens soil SOIL has the effect of changing its use, size or TILL Slide block rotates increases number of dwelling units downwards Surface ow erodes • Temporary or permanent placing, dumping or SAND blu face Seepage erosion (piping) removal of any material undercuts blu face CLAY Waves undercut blu face Sand beach derived from WHAT YOU NEED TO KNOW ABOUT blu matierial TREE REMOVALS TORONTO AND REGION CONSERVATION Circumstances in which a landowner may wish AUTHORITY (TRCA) POLICIES AND to remove a tree from their property: REGULATIONS TO ASSIST • Aesthetic reasons For more information on erosion and TRCA’s PROPERTY OWNERS • Construction or expansion of a building Erosion Risk Management Program visit: WHAT YOU or structure which requires the removal https://trca.ca/conservation/ero- The Ontario Regulation 166/06, which is of a tree sion-risk-management/ administered by TRCA, was established under • The tree is dead, diseased or leaning and is contact: [email protected] SHOULD KNOW the Conservation Authorities Act to prevent now a safety concern development that could be damaged by or 416-661-6600 ext. 5535 or erosion, and to protect the public. Your land Consult your local municipality prior to any tree AS A RAVINE OR BLUFF may be regulated if it meets any of removals to ensure the appropriate removal the following criteria: practices are taken, and necessary permits are PROPERTY OWNER acquired. In order to pro- • There is a flowing through or adjacent tect and preserve to your property urban forests, many municipalities have • Your property backs onto a implemented By-Laws or ravine which provide guidance • Your property backs onto a river valley, regarding tree removals. ravine, wetland or floodplain. Inside left Middle panel Middle panel Inside right

Encourage Vegetation Growth and Divert Water Runoff HOW YOU CAN HELP Leave Stumps in Place

PREVENT BLUFF OR • The root systems from vegetation helps to hold • Excessive groundwater and runoff soils together. A native vegetative buffer along are leading causes of ravine and bluff erosion the top of the bluff or valley slope is encouraged RAVINE EROSION • Automatic lawn sprinklers can aggravate over • Disturbance of soils such as modifications to the saturation of the ground, which can contribute bluff or ravine for access can lead to land sliding to erosion. Turn on sprinklers only when the and accelerated erosion soil is dry Before • It is best to avoid removal of tree stumps near • A leaking pool can create damage to the a shoreline bluff or ravine slope as their root underlying soil, so repair leaks as soon systems help to bind and stabilize the soil. as possible If a tree dies or requires removal, cut the trunk of the tree above the base, leaving the roots intact

Properly Drain Runoff from Roofs and Pools

Keep Yard Waste off Bluffs • Runoff from roofs that drain over the edge and Ravine Slopes of a ravine or bluff can create . INTERCEPTION Downspouts are recommended to are directed After Forest canopy and away from the property’s foundation onto a ground cover reduce splash pad to prevent erosion • Yard waste and garbage smothers underlying surface water and protects against vegetation and adds weight to the upper wind erosion • Runoff from swimming pools should be drained Stabilizing Your Slope portion of a slope, which can cause slope through a hose leading to the street. failure and damage to established vegetation below : • When draining to the bottom of the slope, • It is recommended that a geotechnical Organic materials the outflow should be directed to a layer of engineer be hired to design any form of • Alternatives to dumping include on the forest oor large stones so that the force of the flow does slope stabilization or terracing composting yard waste, leaving lawn reduced water runo allowing it to enter not wash away the soil clippings on the lawn or putting yard porous soil • Improper installation can result in waste to the curb for garbage pick-up • Green Infrastructure alternatives such as rain overloading of the slope crest and barrels and rain gardens can help minimize increases the risk of slope instability • Not only is dumping fill material on the runoff at its source, catching it where it falls bluffs or ravines damaging, doing so STABILIZATION Strong deep roots reinforce • Remember to obtain the required permits without an Authority permit is also against the soil against erosion from TRCA prior to undertaking any work the law. Fines and prosecution under the in these regulated areas Conservation Authorities Act can occur Disclaimer: This Guide contains general information and is not meant to be specific to any as a result particular house, property or area. TRCA will not be responsible or liable for any loss incurred as a result of any individual relying on information contained in this document. Property owners are advised to retain the services of a qualified professional to determine any action that may be required on their properties.