HomeMy WebLinkAbout2687 Stormwater Management Requirements - Drainage Plans and Temporary Erosion Control MeasuresOrdinance No. 2687
AN ORDINANCE OF THE CITY OF PORT TOWNSEND AMENDING SECTION 13.32.020,
DRAINAGE PLAN SUBMISSION, CHAPTER 13.32, STORMWATER MANAGEMENT
REQUIREMENTS OF THE PORT TOWNSEND MUNICIPAL CODE, TO REQUIRE
DRAINAGE PLANS AND TEMPORARY EROSION CONTROL MEASURES FOR
IDENTIFIED ACTIVITIES
WHEREAS, lYrMC Chapter 13.32.020 requires that drainage plans be prepared when
triggered by listed permits; and
WHEREAS, under existing code provisions the City can require a drainage plan in
conjunction with another permit, but the code does not specifically require a drainage plan for
activities that create impervious area at a level which causes stormwater concerns (such as a large
parking lot), unless there is another triggering application; and
and
WItEREAS, the City Council desires to fix this potential "gap' in the Stormwater code;
WHEREAS, the City Council also desires to ensure that erosion and sediment control
measures can be required before, during and after construction in order to preserve the health,
safety and welfare of all citizens of the City,
NOW, THEREFORE, the City Council of the City of Port Townsend does ordain as
follows:
SECTION 1. Chapter 13.32, Stormwater Management Requirements, Section 13.32.020,
Drainage plan - Submission, subsection A, is hereby amended to read as follows:
13.32.020 Drainage plan - Submi~ion.
A. All developers applying for any of the following permits and/or approvals may be
required to submit for approval a drainage plan with their application and/or request: 1. Grading permit;
2. Street development permit;
3. Substantial development permit required under Chapter 90.58 RCW (Shoreline
Management Act);
4. Subdivision approval;
5. Short subdivision approval;
6. Commercial, industrial or multifamily site plan approval;
7. Rezones;
8. Conditional use permits;
9. Planned unit developments;
10. Building permits, where the permit either (a) authorizes or is for new construction
totaling 40 percent or more of imperrio~ developmental coverage within the subject property;
or (b) authorizes or is for new construction which, together with pre-existing developmental
coverage, would result in 40 percent or more impervio~ developmental coverage within the
property or (c) is for development in an environmentally sensitive area or which has the potential
to impact an environmentally sensitive area;
11. Building permits, where the new development does not involve a change in impervious
coverage of a site but where one of the following conditions exist:~
a. The stormwater from the existing development is connected to the sanitary sewer
system.
b. The drainage system serving the existing development is inadequate to prevent impacts
to neighboring properties.
c. Water quality issues are a concern either from the existing development or from the
proposed development.
B. In addition, a drainage plan may be required for creation of impervioUs area, not
covered by a permit, which exceeds either: (1) 5,000 square feet; or (2) 40 percent developmental
coverage within the subject property.
CB. Construction work done under any of the above permits or applications shall not begin
until such time as final approval of the drainage plan is obtained in accordance with PTMC
13.32.050.
D{~. The same plan submitted during one permit/approval process may be subsequently
submitted with further required applications. The plan shall be supplemented with such additional
information that is requested by the public works department or required by the provisions of the
engineering design standards manual and/or DOE Stormwater Management Manual for the Puget
Sound Basin.
E. Tem~r~rary. erosion and sediment control measures may be required under Chapter
5 of the engineering design standards at the discretion of the director for (1) site preparation
and/or construction of any development; or (2) creation of impervious area which exceeds either:
(a) 5,000 square feet or (b) 40 percent of the su~ect property,
(Ord. 2687 § 1, 1999; Ord. 2579 § 1, 1997; Ord. 2126 § 1, 1988; Ord. 1957 § 3, 1983).
2 Ord. 2687
SECTION 2. Severability. If any provision of this ordinance or its application to any
person or circumstance is held invalid, the remainder of the ordinance, or the application of the
provision to other persons or circumstances is not affected.
This ordinance shall take effect and be in force 30 days after the date of its publication in
the manner provided by law.
Read for the first, second, and third times and adopted by the City Council of the City of
Port Townsend, Washington, at a regular meeting thereof, held this 1st day of February, 1999.
Juli~lcCulloch, Mayor
Attest:
Pam Kolacy, City Clerk~~
02/02/99 Ord{ 1332020.doc}
Approved as to Form:
City Attorney
3 Ord. 2687