All inspections under this Division II must be:
conducted by an authorized representative of the Department; or
certified by a professional engineer licensed in this State.
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Ord. 10-277
The applicant must notify the Department:
at least 48 hours before starting any work in conjunction with site development;
at least 48 hours before starting any work in conjunction with the stormwater management plan; and
on completion of the project.
Ord. 02-367
Ord. 10-277
At a minimum, regular inspections must be made and documented, at the stages of construction specified in this section, for each environmental site design planning technique and practice and each structural and nonstructural stormwater management practice.
For ponds:On completion of excavation to sub-foundation and, when required, installation of structural supports or reinforcement for structures, including:core trenches for structural embankments;
inlet and outlet structures, anti-seep collars or diaphragms, and watertight connectors on pipes; and
trenches for enclosed storm drainage facilities;
during placement of structural fill or concrete and installation of piping and catch basins;
during backfill of foundations and trenches;
during embankment construction; and
on completion of final grading and establishment of permanent stabilization.
For wetlands:at the stages specified in subsection (b) of this section for pond construction;
during and after wetland reservoir area planting; and
during the second growing season to verify a vegetation survival rate of at least 50%.
For infiltration trenches:during excavation to subgrade;
during placement and backfill of underdrain systems and observation wells;
during placement of geotextiles and all filter media;
during construction of appurtenant conveyance systems, such as diversion structures, pre-filters and filters, inlets, outlets, and flow distribution structures; and
on completion of final grading and establishment of permanent stabilization.
For infiltration basins:at the stages specified in subsection (b) of this section for pond construction; and
during placement and backfill of underdrain systems.
For filtering systems:during excavation to subgrade;
during placement and backfill of underdrain systems;
during placement of geotextiles and all filter media;
during construction of appurtenant conveyance systems, such as flow diversion structures, pre-filters and filters, inlets, outlets, orifices, and flow distribution structures; and
on completion of final grading and establishment of permanent stabilization.
For open channel systems:during excavation to subgrade;
during placement and backfill of underdrain systems for dry swales;
during installation of diaphragms, check dams, or weirs; and
on completion of final grading and establishment of permanent stabilization.
For environmental site design and nonstructural practices:on completion of final grading;
on establishment of permanent stabilization; and
before issuance of an occupancy permit under the <cite data-path="|building-codes|II">Building Code</cite> and a use permit under the Zoning Code.
Ord. 02-367
Ord. 10-277
Written reports must be made of all inspections conducted during construction.
Each inspection report must specify:the date and location of the inspection;
whether the construction complies with the approved stormwater management plan;
any variations from the approved construction specifications;
any violations found; and
any other information that the Department requires.
The Department must provide the applicant with the results of each inspection report as soon as possible after the inspection.
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Ord. 10-277
At the completion of each construction stage for which an inspection is required, no further work may be done until the Department inspects and approves the work completed to date.
Ord. 02-367
A final inspection must be conducted after construction is completed.
Ord. 02-367
Once construction is complete, the applicant must submit to the Department an as-built plan certification by a professional engineer or professional land surveyor licensed in the State.
The certification must certify that the completed stormwater management practices and conveyance systems comply with the specifications contained in the approved plan.
The certification must include:a set of drawings that compare the approved stormwater management plan with what has been constructed; and
any other information that the Department requires.
Ord. 02-367
Ord. 10-277
For each stormwater management practice completed, the Department must submit a notice of construction to the State Water Management Administration.
The notice must be submitted:within 45 days of construction completion; and
on the form that the Administration supplies.
The notice must report, on a site-by-site basis, the type, number, total drainage area, and total impervious area treated by all environmental site design techniques and practices and structural stormwater management practices.
Ord. 02-367
Ord. 10-277