13.35.010 Applicability and performance standards.
(a) Except as provided in TMC 13.35.020(e), unless an exception is granted pursuant to TMC 13.30.080(d), the following activities shall be designed and constructed in conformance with this chapter and with the performance standard(s) applicable to the project as established in this section:
(1) Adherence to the stormwater quality performance standard shall be required for all requests for approval of subdivision plats and site plans pertaining to land development activities that will:
(i) Disturb an area greater than or equal to one acre of land, including projects that will disturb less than one acre that are part of a larger common plan of development or sale; or
(ii) Disturb less than one acre of land but will discharge stormwater runoff to an impacted water body.
(2) Adherence to the stormwater quantity performance standard shall be required for all requests for approval of subdivision plats and site plans pertaining to land development activities that will result in a total of 10,000 square feet or more of impervious surface on the property, inclusive of any impervious surfaces currently located, and to remain, on the property.
(b) Requests for approval of subdivision plats and site plans that do not meet TMC 13.35.020(a) and (b), but will result in concentrated flows, or will include buffer areas required by Chapter 17.10 TMC, or propose to change stormwater drainage patterns or discharge points from their pre-project conditions shall comply with TMC 13.35.050 and 13.35.070 and may be subject to additional stormwater requirements as deemed necessary by the Director to prevent pollution, erosion, and flooding.
(c) Subdivision plats or site plans approved prior to January 1, 2021, shall be subject to orders, regulations, ordinances, rules, expiration dates, or other properly adopted requirements in effect at the time the original plat or plan was approved. (Ord. 20262 § 3, 10-6-20.)