HomeMy WebLinkAboutInstructions for hardcover calculation worksheet _ • -
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� Post Office Box 66•CrystaI Bay,Minnesota 5a323•Municipal Offices
1
�' � _ � �, On the North Shore of Lake Minnetonka
INSTitIICTIONS FOR COMPL$TING HARDCOVER CA,LCIILATION WORRSHSLT
1. Circle which setback zone (0-75' , 75-250', etc. ) the calculation is
for.
2. For each item of hardcover within that zone, enter the length and
width, and multiply to get square footage (s.f.).
3 . Add up all the square footages to get total square footage of
hardcover.
4 . Divide by the total area of property within the zone and multiply by
100 to get percentage of hardcover in the zone.
5 . If changes in hardcover are proposed, you should do a "before"
worksheet and and "after" worksheet. If either results in percentages
greater than those allowed, contact City staff before proceeding with
your project planning!
HARDCOVER ORDINANCE - In 1975, the Orono City Council adopted an
ordinance Iimiting the percentage of lot area that can be covered with
impervious surfaces ("hardcover") such as roofs, driveways, sidewalks,
etc. on properties located within 1,000 feet of a lake. Studies have
shown that sediments, oils, and debris carried into the lake from
highly urbanized areas have a detrimental impact on the quality of
water in the lake. The intent of Orono's ordinance is to ensure that
rainfall run-off will be cleansed by filtering through grassed or
vegetated yard areas before entering the lake.
Hardcflver Zones - Allowed Percentages:
0-75 ' 0$
75-250 ' 25$
250-500 ' 30$
500-1000 ' 35$
Hardcover includes:
- Roofs
- Sidewalks
- Paved or gravel driveways
- Patios & decks (includes slatted decks )
- Tops of retaining walls & rock walls
- Decorative Iandscape areas underlain by plastic sheeting or fabric
- Any other surface that does not allow direct absorption of rainfal 1
into the ground
BUILDING�ZONING—473-7357 • ADMINISTRAT'[0(Y&FINANCE—473-7358 • PUBLIC WORKS—473-7359
ASSESSING
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SHJ2E4NE
LEF/N2� SAMPLE HARDCOVER CALCULP,TIONS' � -
�r scsv. 9z4.y'
\ ' \ (Note: Use a survey for a base m3p )
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Area of 0-75 ' zone:
1���
75 ' x lI0 ' = 8 ,250 s .f .
� � Area of 75-250 ' 2one :
'� � �° (lI2 ' + 152 ' ) x 100 '
, 2
�_---�Z- -
- 13 , 200 s .f.
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�aeocmrert cucuunnx si�� w1YUC0`1ER CAICULATIO'1 HORKSIE
SETMC[20Ntt (ci�ctc owc) 0-TS' 75-?SO' 250-500' SOU-lOM' s[tuca zowE� (c��c�owa) 0-75' TS-150• 250-500� 50a-100f1•
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ILNGiN MIGTN iEMGiM MIDM /�/� '
x S.f. i--`�--x`�1�S.f.O
x s.t. x s.s.
x T.7. . = S.F.
x S.f. X Y.f. .
e. G.��ce x s.f. �. �ANAGE 2� x Z� .��s.F. O
C. �IIIVE1uT % S.f. C. DIIIVFMAY,��Y�_.�f.f. �
; S.f. �;���f.f.�
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r.la�osc�rt _�Rv�a a�SL_`_L_S-.L=�.F. I' �.Lu�osc�tr[ � : s.s.
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ior�►P�ori�rr Me� i�Zow - � �5�s.r. II Tor�P�on�n Nu i�.1ow - ��.r.S`�`-!i.r. Q
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HARDCOVFR CALCU(JaTION WORKSHEET
SETBACK ZONE: �CIRCLE ONE) 0-75' �5-?50' 25�-5��' S00-1000'
EXISTING HARDCOVER IN ZONE
--------------------------
A� HOUSE X = S�F�
� LENGTH WIDTH
X = , S�F�
X = S�F,
X = S�F�
X = S�F�
_ B� GARAGE X = S�F.
C. DRIVEWAY X = S.F,
X = S� F�
D. . $IDEWALK X = S.F,
X = S�F,
X = S.F�
E. ATIO/
ECK
� X = S.F.
F. LANDSGAPE X = S.F�
AREAS
UNDERLAIN
BY X = S.F�
PLASTIC�
SHEETING
X = S�F�
X = S.F�
G� OTHER X = S�F�
; . ------------- '
TOTAL NARDCOVER IN ZONE - S� F, �A
TOTAL PROPERTY AREA IN ZONE - S�F� �
A : B x 100 = �
is
HARDCOVER CALCUI�iTIO�I WORKSHEFT � •
ScTBACX ZONE: �CIRCLE ONE) 0-75� �5-�5�` Z�l�-5��� 51�0-����� � ,
EXISTING HARDCOVE� IN ZONE
--------------------------
A. HOUSc X = S�F�
� LENGTH WIDTH
X = " S�F�
X = S�F,
' X = S.F,
x = S�F�
B� GARAGc X = S�F�
C. DRIVEWAY X = S�F�
X = S.F�
D� . SIDE'v1ALK X = S.F.
X = S�F.
X = S.F.
E. �ATIO/
EC�{
. x = S�F.
F� LANDSCAPE X = S�F�
AREAS
UNDERLAIN
BY X = S.F�
PLASTIC�
SHEtTING
X = S�F.
X = S�F�
G� OTHER X = S�F�
TOTAL HARDCOVER IN ZONE - S�F. �
TOTAL PROPERTY AREA IN ZONE - S�F� �B
/
q ; B x 100 = �
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