Stream and Drainage System Protection Bylaw Number 4403, 2013
Coquitlam, British Columbia
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File #: 09-3900-20/4403/1 Doc #: 2139883.v4
Consolidated July 2025
BYLAW NO. 4403, 2013
Consolidated with amendments in Bylaw: (1) 4606, 2015; (2) 5273, 2022; (3) 5391, 2024;
(4) 5454, 2025
NOTE: This is a consolidation for convenience purposes only and does not have the force of law.
A Bylaw to protect the stream and drainage systems in the City of Coquitlam
WHEREAS:
A. The Community Charter, S.B.C. 2003, c. 26 (the "Community Charter") authorizes Council to
regulate, prohibit and impose requirements in relation to the protection of the natural
environment;
B. The Community Charter authorizes Council to prohibit a person from fouling, obstructing or
impeding the flow of a stream, creek, waterway, waterworks, ditch, drain or sewer;
C. The Community Charter authorize Council to require works and services for drainage
collection and disposal; and
D. Council deems it in the best interests of the environmental well-being of the community that
streams, creeks, waterways, watercourses, ditches, drains and sewers are protected from
pollution, obstructions, sediment, and sediment laden water,
NOW THEREFORE, the Council of the City of Coquitlam, in open meeting lawfully assembled,
ENACTS AS FOLLOWS:
1
Name of Bylaw
This Bylaw may be cited for all purposes as the "Stream and Drainage System Protection Bylaw
No. 4403, 2013".
2
Interpretation
2.1
In this Bylaw, unless the context otherwise requires, the following words have the
following meanings:
CITY means the City of Coquitlam;
CONSTRUCTION means erecting buildings and structures, and installing or repairing
services, utilities and other engineering works, and includes but is not limited to,
clearing, grading, excavating, filling, soil deposition or removal, landscaping, and land
development, but does not include an activity that will not result in the disruption of any
soil;
DEVELOPMENT means a subdivision or any Construction for which a building permit,
conservation permit, development permit or tree cutting permit is required and shall also
include the demolition of a building or structure where a demolition permit is required;
DEVELOPER means an owner, as defined in the Local Government Act, R.S.B.C. 1996, c.
323, who subdivides land, or applies for a building permit, conservation permit,
development permit, tree cutting permit, demolition permit and includes a duly
authorized representative of the Owner;
DRAINAGE SYSTEM means any natural, designed, constructed or installed system or
network of streams, creeks, waterways, watercourses, waterworks, ditches, drains or
sewers located in the City on private or public property that conveys, or is capable of
conveying, drainage or runoff.
DELETERIOUS SUBSTANCE has the same meaning as defined in the Fisheries Act,
R.S.C. 1985, c. F-14, as amended.
EROSION AND SEDIMENT CONTROL (ESC) FACILITIES means all erosion and sediment
control works, measures, facilities and methods constructed, installed or employed to
reduce the likelihood of sediment and sediment laden water reaching the Drainage
System during all stages of Development.
EROSION AND SEDIMENT CONTROL (ESC) PLAN means the specifications, drawings, plans,
phased Development schedules and design calculations of a Professional Engineer or
Certified Professional in Erosion and Sediment Control in accordance with Schedule B of
this Bylaw.
EROSION AND SEDIMENT CONTROL (ESC) SUBMISSION FORM means the documentation
and related submission requirements in the format prescribed for that purpose by the
Manager.
EROSION AND SEDIMENT CONTROL (ESC) SUPERVISOR means a Qualified Professional who
meets the qualification requirements and has the responsibilities set out in Schedule "C"
- Responsibilities of the Erosion & Sediment Control (ESC) Supervisor;
MANAGER means the General Manager of Engineering and Public Works or his or her
designates;
PRE-DEVELOPMENT APPROVAL means City acceptance to proceed with Development
following an on site meeting involving City staff, the ESC Supervisor and the Developer;
QUALIFIED PROFESSIONAL means an individual, whether acting alone or together with
another Qualified Professional, who:
(a)
is registered, in good standing, and acting under the Code of Ethics, of one or
more of the following professional organizations: Association of Professional
Engineers and Geoscientists of BC; Association of BC Forest Professionals;
College of Applied Biology; Applied Science Technologists and Technicians of BC;
BC Institute of Agrologists; EnviroCert International (Certified Professional in
Erosion and Sediment Control); or BC Society of Landscape Architects,
(b)
is registered, in good standing, and acting under the Code of Ethics of the
Erosion and Sediment Control Association of British Columbia,
(c)
has an area of expertise that is recognized in the field of Erosion and Sediment
Control as one that is acceptable for the purpose of providing all or part of the
design, inspection and monitoring of ESC Facilities;
(d)
is acting within their area of expertise; and
(e)
is undertaking the activities described in this Bylaw in accordance with the Joint
Professional Practice Guidelines - Erosion and Sediment Control published by
Engineers and Geoscientists British Columbia, The College of Applied Biologists
and the BC Institute of Agrologists and as amended from time to time.
REAL-TIME MONITORING FACILITIES means the facilities described in Schedule "D".
SIGNIFICANT RAINFALL EVENT means any precipitation event, which meets or exceeds the
intensity of 25 mm per 24 hour period;
TURBIDITY means the measurement of the suspended particulate matter in water, which
affects the clarity or degree of transparency of the water by interfering with the passage
of a beam of light through the water. Turbidity values are generally reported in
Nephelometric Turbidity Units (NTU);
WASTE has the same meaning as defined in the Environmental Management Act, S.B.C
2003, c. 53, as amended.
3
Prohibition of Discharge
3.1
No person shall obstruct or impede the flow of the Drainage System.
3.2
No person shall place, store, transport or dispose of any Waste or Deleterious Substance in
such manner, so as to permit the likely escape of the materials into the Drainage System,
or any part of it.
3.3
No person shall cause or permit to be released, directly or indirectly into the Drainage
System any Waste or Deleterious Substance.
3.4
Without limiting the generality of s.3.3, no person shall cause or permit to be released,
directly or indirectly into the Drainage System any sediment, earth, Construction or
excavation wastes, cement, concrete, or other substances, which when mixed with water,
will result in:
3.4.1
a pH value outside the range of 6.5 to 8.0; or
3.4.2
a discharge exceeding a Turbidity level of 25 NTU, except during and for 24 hours
following a Significant Rainfall Event a discharge exceeding 100 NTU.
3.5
If during any Construction work, any Waste, Deleterious Substance, or water that exceeds
the limits outlined in s.3.4, is being released directly or indirectly into the Drainage System,
or otherwise impedes the Drainage System as described in s.3.1, the Developer performing
the work must immediately notify the City, as well as the appropriate Federal and
Provincial agencies.
4
Erosion and Sediment Control (ESC) Requirements
4.1
Every person who proposes to carry out Development under a building permit for small-
scale residential building containing two or fewer principal dwelling units shall first
before carrying out any Development on the land:
4.1.1
submit a completed and signed ESC Submission Form in the format prescribed for
that purpose by the Manager;
4.1.2
submit a non-refundable Infrastructure Inspection Fee as specified in the City of
Coquitlam Fees and Charges Bylaw, No. 4338, 2012 as amended; and
4.1.3
install the minimum ESC Facilities identified in Schedule A, and ensure these are
maintained in good working order during all phases of Development.
4.2
Every person who proposes to carry out Development other than Section 4.1 shall first
before carrying out any Development on the land:
4.2.1
submit to the City a completed and signed ESC Submission Form in the format
prescribed for that purpose by the Manager, accompanied by:
4.2.1.1
an ESC Plan in accordance with Schedule "B" and, if applicable, Schedule
"D" of this Bylaw, and to the acceptance of the Manager;
4.2.1.2
a certified cost estimate for the ESC Facilities design, installation,
monitoring, and maintenance;
4.2.1.3
a non-refundable Administration and Inspection Fee as specified in the
City of Coquitlam Subdivision and Development Servicing Bylaw, No. 3558,
2003 as amended; and
4.2.1.4
security deposit in accordance with Section 7;
4.2.2
post on the land, advisory signage, in the format prescribed for that purpose by
the Manager; and
4.2.3
obtain Pre-Development Approval from the Manager.
4.2.4
install the ESC Facilities identified in an approved ESC Plan including, but not
limited to, the minimum ESC Facilities identified in Schedule A, and ensure these
are maintained in good working order during all phases of Development.
4.2.5
for Developments identified in Section 1 Application of Schedule "D", install the
Real-Time Monitoring Facilities and ensure these are maintained in good working
order during all phases of Development.
4.3
Notwithstanding the provisions of Sections 4.1 and 4.2, in the case of Development under
a building permit for a small-scale residential building containing two or fewer principal
dwelling units, the Manager may require a Developer to comply with one or more of the
requirements of Section 4.2 where the Manager considers this necessary for the
protection of the Drainage System.
5
Exemptions From Erosion and Sediment Control (ESC) Submission Requirements
5.1
The Manager may waive one or more of the requirements of section 4.2 where in the
opinion of the Manager the proposed Development is in response to an emergency, or can
be shown to the Manager's satisfaction to have no negative impact on the Drainage
System.
6
Erosion and Sediment Control (ESC) Implementation, Monitoring and Maintenance
Requirements
6.1
Every person who proposes to carry out Development is responsible to ensure the site is in
compliance with the Bylaw for the duration of Development, which includes ensuring that
all ESC Facilities and Real-Time Monitoring Facilities are constructed, installed,
implemented, and maintained for the duration of Development.
6.2
Where the requirements of section 4.2 apply, the Developer must:
6.2.1
appoint an ESC Supervisor who is a Qualified Professional trained in implementing
ESC Plans;
6.2.2
ensure the ESC Supervisor implements an ESC Plan that has been prepared in
accordance with Schedule B of this Bylaw;
6.2.3
ensure the ESC Supervisor conducts the inspection, monitoring and maintenance of
the ESC Facilities in accordance with Schedule C of this Bylaw;
6.2.4
immediately notify the City and cease Development, if for any reason the ESC
Supervisor's services are terminated or withdrawn, until a replacement ESC
Supervisor is appointed;
6.2.5
where Real-Time Monitoring Facilities are required pursuant to this Bylaw, ensure
the ESC Supervisor conducts the inspection and monitoring of the Real-Time
Monitoring Facilities in accordance with Schedule "D" of this Bylaw; and
6.2.6
where Real-Time Monitoring Facilities are required pursuant to this Bylaw, ensure
the Real-Time Monitoring Facilities provider conducts the inspection, maintenance
and monitoring of the Real-Time Monitoring Facilities in accordance with Schedule
"D" of this Bylaw.
6.3
Notwithstanding the provisions of Section 4.2.5 the Manager may require the installation
of Real-Time Monitoring Facilities at any Development where one or more of the following
conditions are met and the Manager considers this necessary for the protection of the
Drainage System:
6.3.1
on 2 or more occasions, water with a turbidity level greater than 25 NTUs has been
discharged into the Drainage System when a Significant Rainfall Event has not
occurred during the preceding 24 hours;
6.3.2
on 2 or more occasions, water with a turbidity level greater than 100 NTUs has
been discharged into the Drainage System; or,
6.3.3
on 2 or more occasions, water with a pH outside the range of 6.5 to 8.0 has been
discharged into the Drainage System.
7
Erosion and Sediment Control (ESC) Security Requirements
7.1
The Manager may require a security deposit in an amount of 110% of the certified ESC
Facilities design, installation, monitoring and maintenance cost or $5,000, whichever is
greater, to secure the full and proper compliance with the provisions of this Bylaw.
7.2
If the amount of the security deposit is insufficient for the City to complete the remedial
work, the Developer, will pay any deficiency to the City on demand.
7.3
When the Developer complies with the provisions of this Bylaw the City will return the
security deposit at such a time as the ESC Supervisor provides the City with written notice
that all Development at the site is complete, the site is stable and under control, and no
longer poses a threat to the Drainage System, and the ESC Facilities have been removed to
the acceptance of the Manager.
8
Remedial Action
8.1
If any person is carrying on any Construction work or any activity in contravention of this
Bylaw, and which in the opinion of the Manager is causing or is likely to result in
contravention of this Bylaw, then the Manager may order the immediate suspension of all
or any portion of such Construction work or other activity by posting a notice to that effect
at the place where the construction work or other activity is ongoing.
8.2
In addition to the authority of the Manager under section 8.1, the Manager may direct
that steps be taken to prevent further contravention of this Bylaw. The Manager shall
send a copy of the written notice to the owner of the land where the Construction or
activity is occurring at the owner's address as it appears on the records of the Land Title
Office, or other last known address.
8.3
If in the opinion of the Manager immediate steps should be taken to prevent the likely or
ongoing contravention of this Bylaw, or if the Manager is not satisfied that the owner, or
other responsible person, has taken appropriate steps to mitigate the damages, then the
City may enter onto the property to take such steps as are necessary in the circumstances.
The Manager must provide written notice of the actions taken or proposed.
9
Offence
9.1
Every person who violates any provision of this Bylaw, or who causes, permits or allows
any act or thing to be done in violation of this Bylaw, or who neglects to or refrains from
doing anything required to be done by any provision of this Bylaw, is guilty of an offence
against this Bylaw and each day that a violation continues is deemed to be a separate
offence against this Bylaw.
9.2
Every person who violates a provision of this Bylaw, or who causes, permits, or allows an
act or thing to be done in violation of a provision of this Bylaw, or who neglects or refrains
from doing anything required by a provision of this Bylaw, is guilty of an offence and is
liable, upon summary conviction, to a fine not exceeding the maximum set out in the
Offence Act, R.S.B.C. 1996, c. 338, as amended.
10 Severance
10.1
The provisions of this Bylaw are intended to be severable and, should any part of this
Bylaw be found to be invalid by a court of competent jurisdiction, the finding of invalidity
will not affect the validity of the remainder of this Bylaw.
11 Repeal and Transition
11.1
The City of Coquitlam Sediment Control Bylaw No. 2929, 1995 is repealed in its entirety.
11.2
The City of Coquitlam Stream and Drainage System Protection Bylaw No. 3447, 2001 is
repealed in its entirety.
11.3
Notwithstanding section 11.2 of this Bylaw, the City of Coquitlam Stream and Drainage
System Protection Bylaw No. 3447, 2001 will continue to apply to Development work for
which a permit, permission or approval of the City was required, and for which an
application was received by the City, prior to the date of final adoption of this Bylaw.
READ A FIRST TIME this 29th day of July, 2013.
READ A SECOND TIME this 29th day of July, 2013.
READ A THIRD TIME this 29th day of July, 2013.
GIVEN FOURTH AND FINAL READING and the Seal of the Corporation affixed this 9th day of
September, 2013.
MAYOR
CLERK
Schedule "A" - Erosion & Sediment Control (ESC) Submission Requirements
1. Development Requirements
1.1.
The ESC provisions of the Stream and Drainage System Protection Bylaw No. 4403,
2013 (the Bylaw) focus on preventing or minimizing the erosion of sediment, earth or
soil from Development sites and the resulting discharge to the Drainage System. The
ESC Submission Requirements apply to the following two categories of Development:
1.1.1
A small-scale residential building containing two or fewer principal dwelling
units;
1.1.2
All other.
1.2.
The submission requirements for these two types of Development are detailed in the
table below:
Table A-1. ESC Submissions Checklist
Submission Requirement
Residential with two or
fewer principal
dwelling units,
Demolition
All Other
ESC Submission Form
ESC Plan
ESC Facilities cost estimate
ESC Pre- Development Approval Form
(Completed at Site with City Staff)
ESC security deposit in accordance
with the Bylaw
ESC Assurance Statement in a form
acceptable to the City
2. Mandatory ESC Facilities
The following ESC Facilities from the City publication Erosion & Sediment Control Best
Management Practices must be implemented and maintained in good working order for all
Development sites:
2.1.
Clean water management;
2.2.
Access/egress controls;
2.3.
Perimeter control measures;
2.4.
Temporary drainage swale and sump;
2.5.
Storm inlet protection (where storm inlets exist);
2.6.
Disturbed surfaces protection;
2.7.
Paved surfaces sweeping/maintenance; and,
2.8.
Any and all other ESC Facilities that are necessary to ensure compliance with the
Bylaw.
Schedule "B" - Erosion & Sediment Control (ESC) Plan Requirements
1. ESC Plan Design & Review
An ESC Plan submitted to the City must:
1.1.
be designed, signed and sealed by a Qualified Professional;
1.2.
be reviewed and signed by the ESC Supervisor; and,
1.3.
conform to the City's design submission requirements outlined in Schedule A, Part I of
Subdivision and Development Servicing Bylaw No. 3558, 2003, as amended.
2. ESC Plan Phasing
2.1.
An ESC Plan submitted to the City must consist of a multi-stage plan that shows the
measures for erosion and sediment control during the following phases (where
applicable):
2.1.1
land clearing, grubbing and grading;
2.1.2
the installation of services or infrastructure;
2.1.3
the building construction; and,
2.1.4
the maintenance period.
3. ESC Plan Contents
An ESC Plan submitted to the City must include all mandatory minimum ESC Facilities
described in Schedule "A", as well as the following information:
3.1.
Facility Locations:
ESC Plans must show details of existing and proposed features including but not limited to:
3.1.1
locations of property line(s) and other legal designations of the subject
property or properties;
3.1.2
location(s) of existing drainage infrastructure and the proposed measures to
protect it;
3.1.3
location(s) of existing and proposed watercourses, ditches, swales or other
bodies of water within 50m of the site boundaries, along with the proposed
protection measures;
3.1.4
location(s) of existing underground services, as well as any proposed
connections to existing services from the site;
3.1.5
location(s) of existing and proposed buildings, including residential buildings
or ancillary buildings or structures;
3.1.6
location(s) of limits of disturbance for each phase of Development;
3.1.7
existing and proposed contours and relevant spot elevations;
3.1.8
location of all proposed ESC Facilities to be implemented on site, including site
access locations, sediment ponds and any necessary wheel wash facilities;
3.1.9
location(s) of water quality monitoring site(s);
3.1.10 specify the appropriate rain gauge to be monitored for SREs;
3.2.
Design Basis and Calculations:
ESC Plans must include details of the basis for the design of the ESC Facilities and the
calculations used to complete the ESC Plan including but not limited to:
3.2.1
anticipated soil type in all areas to be disturbed and at all depths to be
excavated;
3.2.2
the design calculations, installation specifications and maintenance
requirements for each ESC Facility;
3.2.3
the return period and duration of the selected storm event using
current/updated rainfall information and the time of year the Construction will
take place; and,
3.2.4
the anticipated groundwater volumes to be managed on site and describe the
measures in place to ensure that the groundwater meets the quality criteria
set out in Section 3.4 and any other applicable local, provincial and federal
legislation before being discharged to a receiving environment.
3.3.
ESC Plan Monitoring Information:
ESC Plans must provide the following information regarding performance monitoring:
3.3.1
the name, address and telephone number of the ESC Supervisor;
3.3.2
the proposed monitoring and inspection schedule.
3.4.
Design Details
ESC Plans must describe design details including but not limited to:
3.4.1
proposed measures to ensure that any existing ground cover is maintained as
long as practicably possible, that work is staged to prevent erosion whenever
possible, and that exposed soils are placed under non-erosive cover as soon as
possible;
3.4.2
proposed measures to address the erosion and sediment control requirements
for clearing limits, cover measures, perimeter protection, traffic area
stabilization (including detailed design of any necessary wheel washes),
sediment retention, surface water control and dust control, with source
controls being the primary method of erosion and sediment control;
3.4.3
for ESC Plans utilizing treatment chemicals, technical specifications including
ecological toxicity data from the treatment chemical manufacturer and
specifications for the location of treatment and general deployment;
3.4.4
the proposed methods to restore disturbed areas following the completion of
Development (where applicable, application rates and specifications for mulch
must be clearly defined);
3.4.5
a description of the redundancies, contingencies and mitigation measures in
place to ensure that in the event that the design storm event/return period is
exceeded there are no adverse impacts to ecosystem values, private property
or public safety downstream of the property. These measures must consider all
water flows to be managed including stormwater, recirculation volumes
triggered by the Real-Time Monitoring Facilities and groundwater; and,
3.4.6
all other details pertaining to the proposed Development, describing how the
ESC Facilities will meet the criteria set out in Section 3 of the Stream and
Drainage System Protection Bylaw No. 4403, 2013.
Schedule "C" - Erosion and Sediment Control (ESC) Facility Monitoring
1. ESC Supervisor Responsibilities
The ESC Supervisor is responsible for ensuring that the ESC Facilities are installed, operated and
maintained in accordance with the ESC Plan and that the ESC Facilities are ensuring
compliance with the Bylaw. These duties include but are not limited to:
1.1.
assisting the Qualified Professional in preparing the ESC Plan;
1.2.
reviewing and signing the ESC Plan;
1.3.
attending the pre- Development meeting held with the City;
1.4.
completing the inspection, monitoring and reporting of the ESC Facilities in accordance
with this Schedule "C" to ensure ESC Facilities are implemented according to the ESC
Plan, through all phases of Development;
1.5.
advising the Qualified Professional and Developer of any deficiencies in the ESC Plan or
corrective actions required to adapt to changing site conditions or unforeseen
problems that arise regarding compliance with this Bylaw;
1.6.
requiring the suspension of Development based on pending or existing weather
conditions or based on unusual, unacceptable or inappropriate Development practices
to ensure compliance with the Bylaw;
1.7.
coordinating the removal of ESC Facilities with site decommissioning;
1.8.
maintaining a logbook of all inspections, and making the logbook available to the City
upon request;
1.9.
for any sites with a water treatment system, completing a post-installation water
treatment system inspection with the water treatment system provider and,
completing, signing and submitting the Water System Verification Form;
1.10.
delivering written notice to the City's assigned Engineering Inspector and
Environmental Services Division staff when all Development at the site is completed,
the site is stable and under control and no longer poses a threat to the Drainage
System and the ESC Facilities may be safely removed;
1.11.
the ESC Supervisor may delegate site inspections other than the post-installation water
treatment inspection to a suitably qualified subordinate. In such a case the ESC
Supervisor remains responsible for directing the work and must review and sign any
data, reports and correspondence submitted to the City.
2. ESC Supervisor Qualifications
The Erosion and Sediment Control (ESC) Supervisor must be a Qualified Professional who is
experienced in implementing ESC Plans. The ESC Supervisor must be experienced in the design,
monitoring and adaptation of ESC best management practices and all ESC Facilities in use at
the Development.
3. ESC Facility Inspection, Monitoring and Reporting
3.1.
Purpose
3.1.1
Regular and ongoing inspections of ESC Facilities and adhering to the ESC Plan
are crucial to compliance with the Bylaw. To ensure that the prescribed ESC
Facilities remain effective, regular inspections and maintenance must be
conducted though all phases of Development.
3.2.
Daily Site Inspections
3.2.1
Daily site inspections must include daily visual checks that target critical areas
on and off the site as per the Daily Site Inspection Checklist available from the
City's website.
3.2.2
Under the guidance of the ESC Supervisor, daily inspections may be conducted
by suitably qualified on-site personnel (such as the site superintendent or
designate).
3.2.3
The ESC Supervisor must ensure that copies of the checklists are kept on site
and made available for inspection by City staff.
3.3.
Scheduled ESC Facility Monitoring
3.3.1
In addition to the daily site inspections, water quality monitoring by the ESC
Supervisor, or suitably qualified designate, of the site discharge, as well as
assessments of the condition and performance of ESC Facilities must be
conducted and reported to the City' Environmental Services Division at the
minimum regular intervals noted in Table C-1, below.
3.3.2
Summary reports must include a review of ESC Facilities implemented and any
deficiencies observed, maintenance undertaken, or recommendations of
adaptive measures to ensure compliance with the approved ESC Plan. A
summary table of in-situ monitoring results and/or laboratory analysis results
must be also be included in the submitted report (see ESC Site Monitoring
Report Template available from the City's website).
3.3.3
The ESC Supervisor is required to conduct visual inspections to ensure that all
ESC Facilities are installed in accordance with the approved ESC Plan. The
inspections should identify any installation deficiencies that could impair the
ESC Facilities performance and notify the Developer or designate to remedy the
deficiency. Time and date-stamped photos must be taken for inclusion in the
monitoring report.
3.3.4
It is the responsibility of the ESC Supervisor to identify any maintenance issues
that need addressing whereby the effectiveness of the ESC Facilities is likely to
be compromised. Likewise it is up to the discretion of the ESC Supervisor to
evaluate whether or not the installed ESC Facilities are capable of meeting the
ESC requirements of the ESC Plan and ensure that measures are undertaken to
mitigate any potential deficiencies in the ESC Facilities.
3.4.
Significant Rainfall Events
3.4.1
If a Significant Rainfall Event is forecast (via Environment Canada or other) or
anticipated, the ESC Supervisor must, 48 hours prior to the event, conduct an
onsite ESC Facilities review meeting with the Developer and site superintendent
and document this meeting using the Significant Rainfall Event Planning
Checklist available from the City's website.
3.4.2
Spot checks should be conducted during Significant Rainfall Events to evaluate
ESC Facility performance under storm flow conditions when the likelihood of
deficiencies is more prevalent.
3.4.3
Inspections must be carried out within 24 hours of a Significant Rainfall Event.
Table C-1. Monitoring and Reporting Frequencies.
Season
Minimum Monitoring
Frequency
Minimum Reporting
Frequency
Wet season (October 15 to
May 15)
Weekly
Bi-weekly
Dry season (May 16 to
October 14)
Bi-weekly
Monthly
Significant Rainfall Events
- 48 hours prior to event,
- during the event; and,
- within 24 hours of event
Within 7 days of event
4. Water Quality Monitoring
4.1.
General
4.1.1
The ESC Supervisor will monitor the water quality parameters described in
Section 4.2 Monitoring Parameters at the frequency described in Table C-1.
Monitoring and Reporting Frequencies.
4.1.2
The ESC Supervisor will report the results of the water quality parameter
monitoring at the frequency described in Table C-1. Monitoring and Reporting
Frequencies.
4.1.3
All sample collection and testing must be in accordance with water quality
sampling and testing standard practice.
4.2.
Monitoring Parameters
4.2.1
The ESC Supervisor will, at a minimum, monitor the site discharge for the
following parameters:
4.2.1.1.
Turbidity measured in NTUs
4.2.1.2.
pH
4.3.
Water Quality Sampling Locations
4.3.1
Monitoring locations shall be based on the designated monitoring locations in
the approved ESC Plan.
4.3.2
Water quality monitoring locations should appropriately reflect site discharge
at the downstream boundary of the Development site and be independent of
drainage ditches that convey off site water flows. If the primary point of
discharge is piped flow or if there is a potential for water flows conveyed off-
site as piped flow, then water quality sampling must be conducted on flows as
they leave the site.
"Schedule D" - Real-Time Monitoring Facilities
1. Application
1.1.
The requirements in this Schedule "D" apply to Developments within all watersheds in
the City.
1.2.
Notwithstanding the provisions of section 1.1 the requirements of Schedule "D" do
not apply to the following Developments:
1.2.1. Developments that only require a demolition permit as defined in The City of
Coquitlam Building Bylaw No. 3598, 2003, as amended or replaced from time
to time; and,
1.2.2. Small-scale residential developments as defined in the City of Coquitlam Zoning
Bylaw No. 3000, 1996, as amended or replaced from time to time.
1. Real-Time Monitoring Facilities for Construction Site Discharge Water Quality
2.1.
Minor variations or alternates to these requirements are permitted at the discretion of
the Manager.
2.2.
ESC Plans
Where this Schedule "D" applies, the ESC Plan must include all Real-Time Monitoring
Facilities required by this Schedule "D" including but not limited to the following:
2.2.1. The location of all Real-Time Monitoring Facilities on site;
2.2.2. Drawings and schematics detailing all Real-Time Monitoring Facilities;
2.2.3. Any Notification Limits or Shut Off Limits required in addition to the minimum
requirements listed in Section 2.5 Notification and Shut Off Limits;
2.2.4. The design calculations, installation specifications and maintenance
requirements for the Real-Time Monitoring Facilities; and,
2.2.5. Timing for installation and removal of the Real-Time Monitoring Facilities.
2.3.
Real-Time Monitoring Facility Design, Operation and Maintenance
2.3.1. Real-Time Monitoring Facilities must be designed by a Qualified Professional.
2.3.2. Real-Time Monitoring Facilities must be installed, operated, calibrated and
maintained in accordance with the designer's and manufacturer's
recommendations as described in documented Standard Operating Procedures
supplied by the Real-Time Monitoring Facilities provider. The City may require
that a copy of these procedures is provided to the City, a copy must be
available for inspection on site.
2.3.3. Date and time-stamped administrative activity logs including maintenance,
parts replacement, calibrations and other servicing must be kept available for
inspection on site or made available to the City and ESC Supervisor through the
dashboard.
2.3.4. The ESC Supervisor must carry out the responsibilities described in Schedule "C"
and must also:
2.3.4.1 complete routine inspections of the Real-Time Monitoring Facilities in
accordance with the Standard Operating Procedures;
2.3.4.2 compare data collected during monitoring under Schedule "C" to data
provided by the Real-Time Monitoring Facilities, investigate any
discrepancies outside the limits of accuracy for any analysis, and take
any remedial action required to ensure accuracy of the data collected
by routine monitoring and by the Real-Time Monitoring Facilities.
2.3.5. The City will establish and maintain a list of pre-qualified Real-Time Monitoring
Facilities providers. Real-Time Monitoring Facilities must be provided by one of
these pre-qualified providers.
2.3.6. The Real-Time Monitoring Facilities provider must not be affiliated in any way
with any contractors or sub-contractors engaged to provide water treatment
services, ESC Supervision or to act as the Qualified Professional for the
Construction.
2.4.
Water Quality Parameters
2.4.1. Real-Time Monitoring Facilities must provide monitoring of at least the
following water quality parameters:
2.4.1.1
pH;
2.4.1.2
turbidity measured in NTU or FNU;
2.4.1.3
temperature measured in degrees Celsius;
2.4.1.4
discharge flow rate measured in gallons per minute, cubic metres
per second or litres per second;
2.4.1.5
cumulative discharge volume measured in gallons per minute,
cubic metres or litres; and,
2.4.1.6
recirculation flow rate measured in cubic metres per second or
litres per second.
2.4.2. The Real-Time Monitoring Facilities must obtain and report on local rainfall
data from an accredited source which will provide data to the system allowing
for shut off in the event that turbidity exceeds limits linked to Significant
Rainfall Events.
2.4.3. The water quality parameters listed in Section 2.4.1 will be sampled no less
frequently than once every 45 seconds.
2.5.
Notification and Shut Off Limits
2.5.1. The Real-Time Monitoring Facilities will provide automated SMS and email
notifications to the City, the ESC Supervisor and appropriate site staff whenever
the following notification limits are reached and at any additional limits
specified by the ESC Plan:
Parameter
Notification Limit
pH
When pH is less than 6.5; and,
When pH is above 8.0
Turbidity
No Significant Rainfall Event and turbidity is greater
than 25 NTU for 60 seconds; and
Turbidity is greater than 100 NTU for 60 seconds
Valve State
The discharge valve is closed for 60 minutes
Data
Transmission
No data transmission for one or more sensors for 15
minutes
2.5.2. The Notification Limits for a particular Development may be changed at the
discretion of the Manager;
2.5.3. The Real-Time Monitoring Facilities will automatically shut off discharge and
recirculate the storm water for further treatment whenever the following shut
of limits are reached and at any additional limits specified by the ESC Plan:
Parameter
Shut Off Limit
pH
When pH is below 6.5 for 5 min; and
When pH is above 8.0 for 5 min
Turbidity
No Significant Rainfall Event and turbidity is greater
than 25 NTU for 5 mins; and
Turbidity is greater than 100 NTU for 5 mins
Power Failure
In the event of a power failure to the Real-Time
Monitoring Facilities or the ESC Facilities, the discharge
shut off valve must close automatically and remain
closed until full functioning is restored
2.5.4. The Manager may require that the Shut Off Limits be changed in the event
that these limits do not ensure that the ESC Facilities are able to treat the
storm water to the extent that it complies with the requirements of this Bylaw
and any other applicable legislation.
2.6.
Data Sharing Capabilities
2.6.1. The Real-Time Monitoring Facilities will include a cloud-based data sharing
dashboard that provides the following information and capabilities to the City
and the ESC Supervisor:
2.6.1.1
Real-time and historical data for all monitored water quality
parameters and rainfall data;
2.6.1.2
historical data must be available from the start of the Development
to such time as the Manager or their designate grants permission
for the removal of the Real-Time Monitoring Facilities;
2.6.1.3
the dashboard must also allow for the download of all data related
to the Development to pdf or excel format;
2.6.1.4
the dashboard must show the notification limits and shut off limits
in use at all times; and,
2.6.1.5
the dashboard must show the maintenance record and any other
periods during which the Real-Time Monitoring Facilities are not
operational.