Agenda Date: 2/12/18
Subject:
Title
A Resolution for a Floodplain Use by Special Exception for Modification of the Drainageway D floodplain at Watson Lane, located at the southwest corner of West Bowles Avenue and Watson Lane
Body
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Presented By: |
Carolyn Roan, Water Resource Manager and Anastasia Urban, Development Services Manager |
PROPOSED PROJECT:
The project proposes to fill the floodplain at the site located at 3200 and 3410 West Bowles Avenue and 5901 South Watson Lane, in addition to completing construction of the Drainageway D channel.
STAFF ANALYSIS:
Staff has determined that the project application meets the requirements of Chapter 10-6 of the Littleton Municipal Code (floodplain code). The floodplain will be revised with a future Letter of Map Revision, removing much of the property from the floodplain. The proposed channel will convey Drainageway D flows to the culvert under Watson Lane. The proposed fill will elevate the ground to reduce flood risk to future buildings and the engineer applicant has certified the site will be reasonably safe from flooding.
Please reference the following attachments regarding this application:
1. Staff Report
2. Code and Criteria Reference Links
3. Draft PC Resolution 02-2018
4. Outside Referral Agency Matrix and Public Comment
5. Application
6. Site Plan
7. Hydraulic Memos (1-4)
8. FEMA Technical Bulletin 10-01
OPTIONS/ALTERNATIVES:
The planning commission may take the following actions on the application: approve; approve with conditions; continue to a date certain; and deny. A sample motion is provided for each option.
STAFF RECOMMENDATION:
Staff finds that, in compliance with Section 10-6 of the Littleton City Code, the proposed Floodplain Use by Special Exception for Watson Lane meets the criteria for approval, with five conditions included in the proposed motion. Staff, therefore, recommends approval of PC Resolution 02-2018, with the stated conditions.
PROPOSED MOTION:
Proposed Motion
Motion to Approve and/if necessary, With Conditions
I move to approve PC Resolution 02-2018 approving the Floodplain Use for Special Exception concerning Drainageway D at Watson Lane, with the following condition(s):
1. Prior to construction of the floodplain improvements, the applicant shall obtain a grading permit which includes a final grading plan and erosion and sediment control plan.
2. The Final Plat of Subdivision shall include the following notes: 1) The proposed floodplain as shown is subject to approval by City of Littleton Floodplain Use by Special Exception, and by Federal Emergency Management Agency (FEMA) via a Letter of Map Revision (LOMR). 2) Site grading and construction of any buildings with basements on parcels removed from the floodplain by LOMR, are subject to the conditions of the City’s Floodplain Use by Special Exception. Such properties shall be certified by a professional engineer as "reasonably safe from flooding" pursuant to requirements of FEMA Technical Bulletin 10-01. 3) Parcels requiring that the LOMR be effective prior to issuing building permits are indicated by an asterisk (*).
3. Prior to the issuance of the first building permit, the applicant shall prepare and record the final plat, with demonstrates compliance with the approved Use by Special Exception and the floodplain contained in a tract.
4. Prior to application of the first building permit, the applicant shall complete as-built survey of the grading, and a report with a Certificate of Compliance. Should the applicant opt to construct buildings with basements on land removed from the floodplain by LOMR, the Certificate of Compliance will include a Professional Engineer certification that the fill material has been placed pursuant to requirements of FEMA Technical Bulletin 10-01.
5. Applicant shall submit a Letter of Map Revision application to FEMA and obtain approval. This LOMR must be effective prior to issuance of building permits for structures on any lot encumbered by existing floodplain.
6. Any buildings with basements on such parcels will also be subject to construction requirements of FEMA Technical Bulletin 10-01, as part of Building Permit(s) requirements. As-built drawings with Professional Engineer certification that such buildings are “reasonably safe from flooding pursuant to FEMA Technical Bulletin 10-01” shall be required prior to Certificate of Occupancy.
7.
Motion to Continue to a Date Certain
I move to continue the public hearing on PC Resolution 02-2018 concerning Watson Lane, to __________ (insert date) in order to_____________________.
Motion to Deny
I move to deny PC Resolution 02-2018 concerning Watson Lane. The foregoing denial is based on the findings that the proposed work:
Note: Identify criterion or criteria not met and adjust motion accordingly:
1.
2.