HomeMy WebLinkAboutBLD2018-00781 - BLD Small parcel storm water management - 7/18/2018 Name tT/� Parcel# "1 20 )ZQ BLD#
Mason County
Department of Community Development
Small Parcel Stormwater Management Application/Worksheet (page 1 of 2)
Per Mason County Code,Title 14,Chapter 14.48 a stormwater site plan is required whenever a building application is
made for residential development,or redevelopment',with more than 2,000 square feet of impervious surface 2.
'Redevelopment means,on an already developed site,the creation or addition of impervious surfaces,structural development
including construction,installation or expansion of a building or other structure,and/or replacement of impervious surface that is not
part of a routine maintenance activity,and land disturbing activities associated with structural or impervious redevelopment.
2Common impervious surfaces include,but are not limited to,rooftops,walkways,patios,driveways,parking lots or storage areas,
concrete or asphalt paving,gravel roads,packed earthen materials,and oiled,macadam or other surfaces which similarly impede the
natural infiltration of stormwater.Open,uncovered retention/detention facilities shall not be considered as impervious surfaces.
To Calculate Impervious Surfaces Please Complete:This Table
Surface Type Length X Width = Area *All dimensions in feet
Buildings :3C X �
X = Measurements for buildings are taken at the
perimeter of the farthest projections(example:
X = eaves/gutters)
X =
Driveways X =
X = Length of drive begins at the right of way
X =
Parking Areas X =
X = Any paved, gravel or packed area per definition
above table
X =
Patios/Walks X =
X = Any paved, gravel or packed area per definition
above table
X =
Others X =
X = If the total impervious area of the proposed site
X = development is greater than 2000 square feet a
Small Parcel Stormwater Site Plan is Required
Total Impervious Surface Area(sum of all areas)
If the Total Impervious Surface Area is LESS THAN 2000 Square Feet, please read,acknowledge and sign below.
Based Upon the information you have provided a Stormwater Site Plan IS NOT required for this development activity.
Owner/Builder/Agent Acknowledges that submission of inaccurate information may result in a stop work order or permit revocation.
Acknowledgement of such is by signature below. I declare that I am the owner,owner's legal representative,or the contractor.I
further acknowledge that the information provided is accurate and employees of Mason County are granted access to the above-
described property for review and inspection as may be required.
X `Owner)Agent/Contractor(circle one)Date:
If the Total Impervious Surface Area is GREATER THAN 2000 Square Feet, please read,acknowledge and sign
the information provided on page 2 of 2.
Page 1 of 2
Name Parcel# BLD#
Mason County
Department of Community Development
Small Parcel Stormwater Management Application/Worksheet (page 2 of 2)
Based Upon the information you have provided a Stormwater Site Plan IS Required for this development activity.
Title 14, Chapter 14.48 of the Mason County Code(MCC)regulates compliance requirements for Stormwater
Management in this jurisdiction.A complete copy of the ordinance can be found on the Mason County website:
h=Hwww.co.mason.wa—us/code/commissioners/index.htm
Please follow the links to "Title 14, Chapter 14.48 Stormwater Management".
Regulated activities shall be conducted only after Mason County Public Works approves a stormwater site plan
(Mason County Code Title 14 Chapter 14.48 section 14.48.70).You will receive a copy of the Public Works document
entitled "Managing Storm Drainage on Small Lots,The Small Parcel Stormwater Site Plan".This document will assist
you in preparing the necessary information and plans for Public Works to review and approve. Per Department of
Public Works this document will constitute an approved plan if all of the relevant details* are to be installed in
their entirety AND no part of the stormwater system adversely affects any septic system (see Environmental Health
information below). If an alternative system is to be used a plan will need to be submitted to Public Works for approval.
A design by a registered professional may be required for more complex sites.
*These details are found in the document Managing Storm Drainage on Small Lots, The Small Parcel Stormwater Site Plan
on the pages that begin with"Handout"
PLEASE INITIAL BELOW TO INDICATE THE STORMWATER MANAGEMENT PLAN FOR THIS SITE
A) The relevant details from Managing Storm Drainage on Small Lots, The Small Parcel Stormwater Site Plan will be installed
in their entirety AND the system will be located as not to adversely affect any septic systems on this,or any other,parcel.
B) An alternative plan and/or professional design will be submitted to the Department of Public Works for approval AND the
system will be located as not to adversely affect any septic systems on this,or any other,parcel.
If you have further questions pertaining to parcel drainage and Stormwater management Mason County's Public Works
Department can provide additional instructions,guidance and examples. (Section 14.48.130)contact Public works at:
Phone: 360-427-9670 ext 450
100 W. Public Works Dr
Shelton.WA 98584
If this development has,or will have,a septic/drainfield system you may need to contact Mason County Division of
Environmental Health to ensure that the stormwater system will not adversely affect the septic system of this,or
any other, parcel. You may also wish to consult with the septic design professional involved with the project. Mason
County Division of Environmental Health can be reached at:
Phone: 360-427-9670 ext 400
415 N. 6th St— Bldg#8 lower level
Shelton.WA 98584
A condition will be added to the building permit that states, in part,that all conditions the stormwater site plan will be met
prior to a request for final inspection of the building permit.
Owner/Builder/Agent Acknowledges that submission of inaccurate information may result in a stop work order or permit revocation.
Acknowledgement of such is by signature below. I declare that I am the owner,owner's legal representative,or the contractor.I
further acknowledge that the information provided is accurate and employees of Mason County are granted access to the above-
described property for review and inspection as may be required.
X Owner/Agent/Contractor(circle one)Date:
Page 2 of 2