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File #: 17-120    Version: 1 Name:
Type: Study Session Item Status: Agenda Ready
File created: 4/5/2017 In control: Town Council
On agenda: 4/13/2017 Final action: 4/13/2017
Title: Storm Drainage Design Manual Revisions Summary and Update
Code sections: 15-2 - Sanitary Sewers, Design, Construction, Inspection and Usage, 5-10 - Development
Attachments: 1. Storm Drainage Design Manual 4/5/2017, 2. Storm Drainage Design Manual Comment Resolution Final 4.7.17, 3. Presentation - Storm Drainage Design Manual
Related files: 17-029, 17-095, 18-083, 17-121, 18-225, 18-265, 18-264, 17-212
TO: Mayor Collins and Town Council Members

FROM: Kevin Burke, Town Manager
Brent Skoglund, Public Works Director
Jeremy Knapp, Engineering Services Analyst

DATE: April 13th, 2017

DEPARTMENT: Public Works and Engineering Department

Staff Contact Jeremy Knapp, Engineering Services Analyst
480-348-3622
End

AGENDA TITLE:
Title
Storm Drainage Design Manual Revisions Summary and Update
Body

Council Goals
Storm Water - Identify the scope, scale and possible solution to recurring storm water management issues.

SUMMARY STATEMENT:
At the February 9th Town Council Meeting staff presented the proposed Storm Drainage Design Manual, highlighting some of the updates and changes. The discussion led to several Town Council questions which needed further input as well as Council request for public comment.

After the February 9th meeting, the Engineering Department began publicizing the draft document, advertising a public meeting, and soliciting public comment the week of February 20th. Staff utilized the town's website, e-mailed the notify me builders list, placed flyers at the Building and Engineering Departments counters, published a noticed in the March 8th Paradise Valley Independent, and placed ads on the TV screens at Town Hall. On March 21st, staff held a public meeting in the Community Room to present the draft and receive public input. A summary of the input was presented at the March 23rd Council Meeting.

At the March 23rd meeting staff addressed Council's questions regarding what new regulations were included in the document and the cost implications associated with complying. A recommended option was to adopt the manual as written which included four policy decisions they are:

1. Calculation for flatland retention for disturbed area
2. Hillside retention requirements on a tiered scale
3. First flush requirement for the first 1/2" of rainfall
4. Retention basin easement requirement

There are two policy decisions that required clarific...

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