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(A) The developer shall notify the inspecting professional engineer or professional land surveyor listed on the plans at least 48 hours before commencing any work in conjunction with site development, the SWM plan, and upon completion of the project.
(B) Regular inspections shall be made and documented for each ESD planning technique and practice at the stages of construction specified in the Design Manual. At a minimum, all ESD and other nonstructural practices shall be inspected upon completion of final grading, the establishment of permanent stabilization, and before issuance of a grading completion certificate.
(C) All inspections shall be the responsibility of the professional engineer or the professional land surveyor listed on the plan. With the county’s prior written permission, an equally qualified professional engineer or land surveyor may be substituted. Written inspection reports shall be prepared and the inspection checklist completed to ensure compliance with the approved plans. Inspection reports shall include:
(1) The date and location of the inspection;
(2) Whether construction was in compliance with the approved SWM plan;
(3) Any variations from the approved construction specifications; and
(4) Any existing violations.
(D) The owner or developer and onsite personnel shall be notified in writing when violations are observed. Written notification shall describe the nature of the violation and the required corrective action.
(E) No work shall proceed until the professional engineer or land surveyor inspects, approves the work, and signs the inspection certification chart on the plan.
(2004 Code, § 191-21) (Ord. 01-12, passed 9-27-2001; Ord. 04-07, passed 4-1-2004; Ord. 2010-05, passed 4-29-2010)
(A) At a minimum, regular inspections shall be made and documented at the following stages of construction:
(1) Ponds.
(a) Upon completion of excavation to subfoundation and, when required, installation of structural supports or reinforcement for structures, including but not limited to:
1. Core trenches for structural embankments;
2. Inlet and outlet structures, anti-seep collars or diaphragms, and watertight connectors on pipes; and
3. Trenches for enclosed storm drainage facilities.
(b) During placement of structural fill, concrete, and installation of piping and catch basins;
(c) During backfill of foundations and trenches;
(d) During embankment construction; and
(e) Upon completion of final grading and establishment of permanent stabilization.
(2) Wetlands.
(a) At the stages specified for pond construction in division (A)(1) above;
(b) During and after wetland reservoir area planting; and
(c) Twelve months after reservoir area planting to verify a vegetation survival rate of at least 75%.
(3) Infiltration trenches.
(a) During excavation to subgrade;
(b) During placement and backfill of underdrain systems and observation wells;
(c) During placement of geotextiles and all filter media;
(d) During construction of appurtenant conveyance systems such as diversion structures, prefilters and filters, inlets, outlets, and flow distribution structures; and
(e) Upon completion of final grading and establishment of permanent stabilization.
(4) Infiltration basins.
(a) At the stages specified for pond construction in division (A)(1) above; and
(b) During placement and backfill of underdrain systems.
(5) Filtering systems.
(a) During excavation to subgrade;
(b) During placement and backfill of underdrain systems;
(c) During placement of geotextiles and all filter media;
(d) During construction of appurtenant conveyance systems such as flow diversion structures, prefilters and filters, inlets, outlets, orifices, and flow distribution structures; and
(e) Upon completion of final grading and establishment of permanent stabilization.
(6) Open channel systems.
(a) During excavation to subgrade;
(b) During placement and backfill of underdrain systems for dry swales;
(c) During installation of diaphragms, check dams, or weirs; and
(d) Upon completion of final grading and establishment of permanent stabilization.
(7) Non-structural practices.
(a) Upon completion of final grading; and
(b) The establishment of permanent stabilization.
(B) Once construction is complete, an as-built plan certification shall be submitted by a professional engineer or professional land surveyor as appropriate to ensure that ESD planning techniques, nonstructural and structural SWM practices and conveyance systems comply with the specifications contained in the approved plans. The as-built plan shall be submitted within 60 days of completion of construction. At a minimum, as-built plan certification shall include a set of drawings comparing the approved SWM plan with the completed construction. Both the as-built block and inspection chart shall be completed, signed, and certified on the as-built. The county may require additional information.
(C) The county shall submit notice of construction completion to the Administration on a form supplied by the Administration for each structural SWM practice. The type, number, total drainage area, and total impervious area treated by all ESD techniques and practices shall be reported to the Administration on a site-by-site basis. If BMPs requiring SCD approval are constructed, notice of construction completion shall also be submitted to the appropriate SCD.
(2004 Code, § 191-22) (Ord. 01-12, passed 9-27-2001; Ord. 04-07, passed 4-1-2004; Ord. 2010-05, passed 4-29-2010)
MAINTENANCE
(A) The county shall ensure that preventative maintenance is performed by inspecting all ESD, non-structural treatment systems and structural stormwater treatment measures. Inspection shall occur during the first year of operation and at least once every three years thereafter. In addition, a Stormwater Management Deed of Easement and Maintenance Agreement between the owner and the county shall be executed for ESD, non-structural treatment systems and structural stormwater treatment measures as required by this chapter.
(B) Inspection reports shall be maintained by the county for ESD, non-structural treatment systems and structural stormwater treatment measures.
(C) Inspection reports for ESD, non-structural treatment systems and structural stormwater treatment measures shall include the following:
(1) The date of inspection;
(2) Name of the inspector;
(3) An assessment of the quality of the SWM system related to ESD treatment practice efficiency and the control of runoff to the MEP;
(4) The condition of:
(a) Vegetation or filter media;
(b) Fences or other safety devices;
(c) Spillways, valves, or other control structures;
(d) Embankments, slopes, and safety benches;
(e) Reservoir or treatment areas;
(f) Inlet and outlet channels or structures;
(g) Underground drainage;
(h) Sediment and debris accumulation in storage and forebay areas;
(i) Any non-structural practices to the extent practicable; and
(j) Any other item that could affect the proper function of the SWM system.
(5) Description of needed maintenance.
(D) After notification of any deficiencies discovered from an inspection of a structural SWM facility, the owner shall have 30 days or other time frame as determined by the county to correct the deficiencies. The county shall conduct a subsequent inspection to ensure completion of the repairs.
(E) If repairs are not properly completed, the county may initiate enforcement proceedings.
(F) If, after an inspection by the county, the condition of a structural SWM facility presents an immediate danger to the public health or safety, the county may take action as may be necessary to protect the public and make the facility safe. Any cost incurred by the county shall be assessed against the owner pursuant to this chapter.
(2004 Code, § 191-23) (Ord. 01-12, passed 9-27-2001; Ord. 04-07, passed 4-1-2004; Ord. 2010-05, passed 4-29-2010; Ord. 2018-11, passed 11-29-2018)
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