Site_Classification_Worksheet.pdfCit Y of Edmonds
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Site Classification Worksheet
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'rtie project's Site Classification will dict'ate the specffic storinwater managotm,11.1t
reqUirCITICNItS applicable to your site. (",",oi npleti, wig, this workshect will help determine the amount Of
regulated imperviotts surface and whether -your proJect falls into the classificatiot'i of a Small Site
�< I I I aSary fL)11, - mrqs� a Id
(Categmy J or Category 2), q'�Q%4inor Please reference he G o
If YES, the subject area is to be considered impervious for initial site classification piirposes. Include total
permeable pavement area in the calculation of Non - R g
Q glated, &L&gc_qd arid/or New impervious surface
areas in the table below.
2) Determine the Amount and Type of Existing & Proposed linpervious Surface for the Site
Refer to Stonnivater Stivolernent Chaoter 2 and Fiz C
Line 1: Identify the Non -Regulated Impervious Surface Area.
Line 2: Identify the Replaced Impervious Surface Area, dividing the total between hExera
and lie gjllated; either or both
nlay be zero. Note: For project classification purposes, Replaced Impervious may only be considered exempt
under certain conditions. Refer to the Glossary and Figure D.
Une 3: Identify the New Impervious Surface Area for your project. All inrlpefVious areas created post- July'7, 1977 or-
after
rafter [fie 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 sura of the total ReDlaced-Reaulated plus the total New. impervious areas.
Line 5: Identify the total area currently mitigated by an existing city -approved sLorrnwater management system,
Line 6: Enter the sura 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.
LIDO: 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 Storrawater Management Techniques.
Provide a copy of the following table on the drainage plan sheet for the proposed project
Line
Type
Area (square feet)
L
Non -Regulated
=777-7-77;
Exempt
Regulated
2,
Replaced
3.
New (Post 1977) +
Total Regulated Impervious Area
4.
Alin g�vion required Pf in excess [7}'. . s
—L
5.1
rater Management Syst (s)
Tot, Area Mitigated by Existing Stara mw
6.
Regulated Area Not Yet Miti at e i
7
7.]
Area Plroposed to be Mitigated by Low Impact Development Tecliniq es
(jx0
3.
�a
Area Proposed to be Mitigated through Conventional SWM Techniques 1
. . .. ..... ...........
(e.g, porous asphalt, pomi.vs concrete, paves blocks, conci-Ete open celleo paving or ph6tic lattices fitled W a#'l 11"'t 'Jrl
Revised on,31050012 E72.-SWilf Paqe .5 of 12
�'Vt
C"I'Aty of Edmonds
Classification Worksheel
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3) Determine the Total Area of Land Disturbing Activity
Refer to Stormwater Supplement Chapter 8
h sf
l.-
) Determine the Quantity of Grading, Fill and/or Excavation
s) Will the project convert 3/ Acre or More of Native Vegetation to Lawn or ❑ Yes No
Landscaped Area?
6) Identify the Watershed the Existing Site Runoff Discharges to
Refer to Stormwater Suvvlement Chapter 2.3
Based on Site Location and Watershed Map — Figure -C. Check all that apply.
A. ❑ Direct Discharge B. F-1 Creek or Lake Basin
El Edmonds Way Basin
Ei Puget Sound Basin
p Puget Sound Piped Basin
DETERMINE PROJECT CLASSIFICATION USING THE INFORMATION ABOVE
AND THE PROJECT CLASSIFICATION CHART (Figure B, pg 4)
❑ Small Site - Category 1 ❑ Small Site - Category 2 VminorSite
Stormwater Supplement Stormwater Supplement Stormwater Supplement
Chapter 5 Chapter 5 Chapter 6
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