TOWN OF GRANBY ZONING REGULATIONS TABLE OF CONTENTS

SECTION 4
SITE PLANS
B. Pretreatment Facilities
Pretreatment of runoff is required prior to discharging to the site’s primary
stormwater treatment facility or to any infiltration facility. The purpose of
pretreatment is to remove large particles and debris from runoff in order to
prevent clogging and minimize maintenance of any downstream treatment
facility. Appropriate pretreatment facilities include deep sump catch basins,
sediment traps, grass swales, vegetative buffers, gravel/riprap flow spreaders,
underground detention systems, oil water separators and proprietary settling
devices. Further downstream treatment utilizing primary treatment facilities is
required after pretreatment.
C. Primary Treatment Facilities
Primary treatment of stormwater runoff is required at all points where
stormwater discharges from the site into an existing stormwater conveyance
system, watercourse, water body or wetland. Primary treatment facilities
should be capable of capturing and treating the design water quality volume
(WQV) or the design water quality flow (WQF) in accordance with the design
procedures contained in the Connecticut Stormwater Quality Manual.
Examples of primary treatment facilities include infiltration trenches, infiltration
basins, rain gardens, bio-filtration swales, surface or underground filtration
systems, bio-retention systems and proprietary filtration devices.
4.2.5 LandscapeTreatment
A. The following shall apply to all developments where a Site Plan approval is
required:
Where any commercial, industrial or multi-family use abuts a residential zone,
a twenty-five (25) feet wide landscaped buffer strip shall be provided, on the
lot used for such commercial, industrial or multifamily-use, extending the
length of the property boundary, seeded and properly planted with trees and
shrubs to insure a proper break between the two uses. The Commission may
waive this requirement where the abutting residential zone does not contain a
residential use;
B. The site shall contain a minimum landscaped area in the aggregate 20% of
the total Site.
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