(A) This subchapter shall apply to all projects whether the stormwater management system or portions thereof will be dedicated to the town or retained privately. After completion of construction of the project and before the release of required performance assurances referenced in § 55.083 above, a professionally prepared and certified 'as-built' set of plans (record drawings) shall be submitted to the town for review. These as-built plans/record drawings must be prepared and certified by the Engineer of Record, i.e., the company/engineer who originally prepared the construction plans. Additionally, a digital copy of the ‘as-built’ plans (record drawings) as well as finalized digital versions of all analyses, models, manuals, and reports that are consistent with the as-built conditions are required in a format acceptable to the town. These plans shall include all pertinent data relevant to the completed storm drainage system and stormwater management facilities, and shall include:
(1) Pipe size and pipe material;
(2) Invert elevations;
(3) Top rim elevations;
(4) Elevation of the emergency overflow (spillway) for ponds;
(5) Grades along the emergency flood routing path(s);
(6) Pipe structure lengths;
(7) BMP types, dimensions, and boundaries/easements;
(8) “As-planted” plans for BMPs, as applicable;
(9) Data and calculations showing detention basin storage volume;
(10) Data and calculations showing BMP treatment capacity; and
(11) Certified statement on plans stating the completed storm drainage system and stormwater management facilities substantially comply with construction plans and the stormwater management permit as approved by the town. See certificate in the Stormwater Technical Standards Manual.
(B) The property owner, developer, or contractor shall be required to file a three-year maintenance bond or other acceptable guarantee with the town in an amount not to exceed 25% of the cost of the stormwater management system, and in a form satisfactory to the town in order to assure that such stormwater system installation was done according to standards of good workmanship, that the materials used in the construction and installation were of good quality and construction, and that such project was done in accordance with the accepted plans, and this chapter. The bond or other acceptable guarantee shall be in effect for a period of three years after the date of the release of required performance assurances referenced in § 55.083. The beneficiary of all maintenance bonds shall be the Town Council of the Town of Sellersburg.
(C) To verify that all stormwater infrastructure is functioning properly, visual recordings (via closed circuit television) of such infrastructure, including all subsurface drains, shall be required twice: once following the completion of installation of the stormwater management system and submittal of as-builts, and the second time before release of maintenance bonds. These visual recordings will be scheduled by the town and paid for by the developer. Notices shall be provided to the town within 72 hours following the completion of installation and again at least 60 days prior to the expiration date of the maintenance bond so that the noted recordings may be scheduled. Reports summarizing the results of the noted visual recordings shall be reviewed and accepted by the town before the plat is recommended for recording and again before the maintenance bond shall be recommended to be released.
(Ord. 2021-OR-003, passed 1-11-21)
