§ 21.67.050. Storm water runoff restrictions and system plan review.

A.

The director shall develop, implement, and maintain the Storm Water Treatment Plan Review Guidance Manual, incorporated herein by reference, which shall be used to develop, review, and approve storm water runoff system plans for projects which discharge storm water into or onto land, surface water, or groundwater within the municipality.

B.

Any person who constructs, alters, installs, modifies, or operates a storm water treatment or disposal system shall comply with the Storm Water Treatment Plan Review Guidance Manual established by the director regarding storm water runoff system plan requirements and plan reviews, and if necessary, gather data to confirm storm water conditions.

C.

If construction, alteration, installation, modification or operation has not begun within one year after issuance of plan approval, the approval is void, and plans shall be resubmitted to the department for review and approval.

D.

The director may, in his discretion, require the submission of site-specific plans, including a schedule and description of all planned discharge activities, for approval. The director may, in his discretion, restrict that approval to certain proposed discharge activities. The applicant shall pay to the department the fee required under section 21.67.060 for each site-specific plan review. The applicant shall pay the fee prior to permit issuance.

E.

Any person who performs mechanized land clearing (chainsaws excluded) with no building permit on one or more contiguous undeveloped lots, totaling two acres or more shall obtain a land clearing permit issued by the director and shall comply with the Storm Water Treatment Plan Review Guidance Manual regarding storm water runoff requirements and plan reviews. A temporary native vegetation buffer shall be retained on the perimeter of any undeveloped lot of two acres or more during land clearing equal to or greater than the specified minimum yard setback for that site's zoning district. This buffer shall be at least 15 feet wide on the perimeter of lots in commercial and industrial zoning districts, except where these are adjacent to PLI and/or residential zoning districts, where the temporary buffer shall be a minimum of 30 feet wide. Those buffers of temporary native vegetation in commercial and industrial zoning districts not essential to the parcel's development shall be retained and protected from disturbance.

F.

Water body delineation.

1.

Official definitions and standards. In cases where water courses or water bodies are not mapped and recorded in official plans or other documents, delineation of such features shall be made according to project management and engineering division procedures, and shall be subject to formal verification by the project management and engineering division.

2.

Water course boundaries. Water course boundaries shall be delineated at the ordinary high-water mark or, if not readily discernible, the defined bank of the stream, as those terms are defined in Chapter 21.35.020. In those instances where the defined bank of the water course is not readily discernable, the project management and engineering division shall establish the effective ordinary high-water mark. The project management and engineering division shall maintain the official record of all water course boundaries.

G.

Snow disposal sites.

1.

The director of project management and engineering division shall develop, implement, and maintain the Siting, Design and Operational Controls Manual for Snow Disposal Sites, incorporated herein by reference, which shall be used to develop, review, and approve snow disposal sites which discharge storm water into or onto land, surface water, or groundwater within the municipality.

2.

Any person who constructs, alters, installs, modifies, or operates a snow disposal site shall comply with the Siting, Design and Operational Controls Manual for Snow Disposal Sites, established by the director regarding requirements and plan reviews, and if necessary, gather data to confirm storm water conditions.

3.

If construction, alteration, installation, modification or operation has not begun within one year after issuance of plan approval, the approval is void, and plans shall be resubmitted to the project management and engineering division for review and approval.

4.

All existing snow disposal sites within two years of the adoption of this ordinance will submit for a plan review of the site under the manual. Any site not in compliance with the manual shall have three years from the date of plan approval to modify the site and bring it into compliance or cease snow disposal operations.

H.

Snow melter operations.

1.

The director shall develop, implement, and maintain the Snow Melter Operations and Plan Review Guidance Manual, incorporated herein by reference, which shall be used to develop, review, and approve storm water runoff system plans for snow melters which discharge storm water into or onto land, surface water, or groundwater within the municipality.

2.

Any person who constructs, alters, installs, modifies, or operates a snow melter system shall comply with the Snow Melter Operations and Plan Review Guidance Manual established by the director regarding storm water runoff system plan requirements and plan reviews, and if necessary, gather data to confirm storm water conditions.

3.

The department has sole discretion to determine the number of effective discharge points represented by an application for a snow melter discharge permit and to determine the type of site management required. In assessing the number of effective discharge points serving a site or group of sites and the applicable site management strategy, the department may consider:

a.

The position of a discharge point on a headwater or other sensitive storm drain network;

b.

The presence of related discharge points on the same local branch of a storm drain network;

c.

The presence of a common receiving water for a related group of discharge points on the same storm drain network; and

d.

The history of any snow melter operations at those sites.

4.

If construction, alteration, installation, modification or operation has not begun within one year after issuance of plan approval, the approval is void, and plans shall be resubmitted to the project management and engineering division for review and approval.

5.

Permit application, amendment and renewal fees are non-reimbursable. Management and inspection fees may be reimbursed for each effective discharge point only under the following conditions:

a.

Application for reimbursement of management and inspection fees for a discharge point is received by the department prior to 5:00 p.m. on the first Monday in December; and

b.

The department has not received any notification of proposed operations, nor any actual performance of snow melter operations have taken place at any discharge location of an effective discharge point, at the time of request for reimbursement.

(AO No. 2002-117, § 9, 1-28-03; AO No. 2005-179, § 1, 2-28-06; AO No. 2010-81(S-1), §; 47, 12-7-10, eff. 1-1-11)