At a minimum, regular inspections shall be made and documented
at the following specific stages of construction:
A. Ponds:
(1) Upon completion of excavation to subfoundation and, when required,
installation of structural supports or reinforcement for structures,
including but not limited to:
(a)
Core trenches for structural embankments;
(b)
Inlet and outlet structures, antiseep collars or diaphragms,
and watertight connectors; and
(c)
Trenches for enclosed storm drainage facilities.
(2) During placement of structural fill, concrete, and installation of
piping and catch basins;
(3) During backfill of foundations and trenches;
(4) During embankment construction; and
(5) Upon completion of final grading, establishment of permanent stabilization.
B. Wetlands: at all stages specified for pond construction, during and
after wetlands reservoir planting, and during the second growing season
to verify a vegetation survival rate of at least 50%.
C. Infiltration trenches:
(1) During excavation to subgrade;
(2) During placement and backfill of underdrain systems and observation
wells;
(3) During placement of geotextiles and all filter media;
(4) During construction of appurtenant conveyance systems, such as diversion
structures, prefilters and filters, inlets, outlets, and flow distribution
structures; and
(5) Upon completion of final grading and establishment of permanent stabilization.
D. Infiltration basins: at all stages specified for pond construction,
during placement of and backfill of underdrainage system.
E. Filtering systems:
(1) During excavation to subgrade;
(2) During placement and backfill of underdrain systems;
(3) During placement of geotextiles and all filter media;
(4) During construction of appurtenant conveyance systems, such as diversion
structures, prefilters, and filters, inlets, outlets, and flow distribution
structures; and
(5) Upon completion of final grading and establishment of permanent stabilization.
F. Open channel systems:
(1) During excavation to subgrade;
(2) During placement and backfill of underdrain systems for dry swales;
(3) During installation of diaphragms, check dams, or weirs; and
(4) Upon completion of final grading and establishment of permanent stabilization.
G. ESD practices: at the stage of construction specified in the Design
Manual for each ESD planning technique and practice and, at a minimum,
upon completion of final grading, the establishment of permanent stabilization
and before issuance of use and occupancy approval.
Once construction is complete, as-built plan certification shall
be submitted by a professional engineer or professional land surveyor
licensed in the State of Maryland to ensure that ESD techniques, treatment
practices and structural stormwater management practices and conveyance
systems comply with the specifications contained in the approved plan.
At a minimum, as-built certification shall include a set of drawings
comparing the approved plan with what was constructed. Other information
shall be submitted as required by the Town.
Within 45 days of construction, the Town shall submit a notice
of construction completion to the Maryland Department of the Environment
on a form supplied by the Maryland Department of the Environment for
each structural stormwater management practice. The type, number,
total drainage area, and total impervious area treated by all ESD
techniques and practices shall be reported to the Maryland Department
of the Environment. A notice of construction completion shall be sent
to the Kent Soil and Water Conservation District when BMPs requiring
District approval are constructed.