(A) After completion of construction of the project and before final acceptance of the stormwater management plan (the issuance of a "verified" NOT), a professionally prepared and certified 'as-built' set of plans (record drawings) shall be submitted to the Boone County Drainage Board and/or Boone County Surveyor 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 is required in a format accepted by the Boone County Drainage Board and/or Boone County Surveyor that they can be electronically filed for any future reference. 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 Boone County Drainage Board. (See certificate in 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 Boone County Drainage Board and/or Boone County Surveyor, prior to acceptance, in an amount not to exceed 25% of the cost of the stormwater drainage system located outside the public road right-of-ways, and in a form satisfactory to the Boone County Drainage Board and/or Boone County Surveyor's attorney 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 final project acceptance (issuance of a "verified" NOT) by the Boone County Drainage Board and/or Boone County Surveyor.
(C) To verify that all regulated drain tiles are functioning properly, visual recordings (via closed circuit television) of such tile drains shall be required, once following the completion of installation (including the installation of all utility mains) and the second time before release of maintenance bonds. These visual recordings will be scheduled by the Boone County Drainage Board and/or Boone County Surveyor and paid for by the developer. Notices shall be provided to the Boone County Drainage Board and/or Boone County Surveyor 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 Boone County Drainage Board and/or Boone County Surveyor before the plat is recommended for recording and again before maintenance bond would be recommended to be released.
(Ord. 2015-01, passed 1-20-2015)
Figure 1: Permit Approval Process
(Ord. 2015-01, passed 1-20- 2015)