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INTY '--IF EDMONDS
City of Edmonds
Site Classification Worksheet
Page 1 of 2
0� ED4
RESU184.,.'
MAR 2 12014
.BUILDING DEPW�JTWMENT Ile'
The project's Site Classification will dictate the specific stormwater management
requirements applicable to your site. Completing this worksheet will help determine the amount of
regulated impervious surface and whether your project falls into the classification of a Small Site
(Category I or Category 2), or a Minor Site. Please reference the Glossary (pp. 10- 11), Figures Q and
E, (121?. 8-9), and Examples (pp. I I - 12), to assist with completion of this worksheet.
1) Is Permeable Pavement' Proposed For Use on this Site? El Yes >T
Refer to Stormwater Supplement Chapter 5.1 No]
If YES, the subject area is to be considered impervious for initial site classification purposes. Include total
permeable pavement area in the calculation of Non -Regulated. Replaced and/or New impervious surface
areas in the table below.
2) Determine the Amount and Type of Existing & Proposed Impervious Surface for the Site
Refer to Stormwater Supplement Chapter 2 and Fig. C
Line 1: Identify the Non -Regulated Impervious Surface Area.
Line 2: Identify the Replaced Impervious Surface Area, dividing the total between Exempt and Relzulated; either or both
may be zero. Note: For project classification purposes, Replaced Impervious may only be considered exempt
under certain conditions. Refer to the Glossary and Figure D.
Line 3: Identify the New Impervious Surface Area for your project. All impervious areas created post -July 7, 1977 or
after the date of annexation into the City are regulated & should be included in this total unless they can be
categorized separately as a Replaced -Regulated area.
Line 4: Enter the sum of the total Replaced -Regulated plus the total New impervious areas.
Line 5: Identify the total area currently mitigated by an existing city -approved stormwater management system.
Line 6: Enter the sum of the value in Line 4 less the value in Line 5 to identify the total Regulated area in which
stormwater controls have not yet been applied.
Line 7: Identify the total area proposed to be mitigated through the use of Low Impact Development Techniques.
Line 8: Identify the total area proposed to be mitigated through conventional Stormwater Management Techniques.
** Provide a copy of the following table on the drainage plan sheet for the proposed project
Line
Type
Area (square feet)
1.
Non -Regulated
Exempt
Regulated
2.
Replaced
3.
4.
New (Post 1977) 44 4 444 444
----------- ----------
Total Regulated Impervious Area
Mitigation required if in excess of 2000sf
+
5.
6.
Total Area Mitigated by Existing Stormwater Management System(s)
Regulated Area Not Yet Mitigated
/L///�
7.
Area Proposed to be Mitigated by Low Impact Development Techniques
/t//19
8.
Area Proposed to be Mitigated through Conventional SWM Techniques
A/
I (e.g. porous asphalt, porous concrete, paver blocks, concrete open celled paving grids, or plastic lattices filled with turf or stone)
Revised on 310512012
E72-SWM—Erosion—Control-03.05.12.doc
Page 5 of 12
City of Edmonds
Site -Classification Worksheet
Page 2 of 2
3) Determine the Total Area of Land Disturbing Activity L4 -Z-2 sf
. Refer to Stormwater Supplement Chapter 8
4) Determine the Quantity of Grading, Fill and/or Excavation 7-0—cy
5) Will the project convert 3/4 Acre or More of Native Vegetation to Lawn or El Yes 7[�o
Landscaped Area?
6) Identify the Watershed the Existing Site Runoff Discharges to
Refer to Stormwater Supplement Chapter 2.3
Based on Site Location and Watershed Map — Fi ure-C. Check all that apply.
A. F-1 Direct Discharge B. El Creek or Lake Basin
o Edmonds Way Basin
Ei Puget Sound Basin
o Puget Sound Piped Basin
DETERMINE PROJECT CLASSIFICATION USING THE INFORMATION ABOVE
AND THE PROJECT CLASSIFICATION CHART (Figure B, pg 4)
El Small Site - Category 1 El Small Site - Category 2 El Minor Site'
Stormwater Supplement Stormwater Supplement Stormwater Supplement
Chapter 5 Chapter 5 Chapter 6
Revised on 310512012
E72-SWM—Erosion—Control-03.05.12.doc
Page 6 of 12