HomeMy WebLinkAboutCOM 0176.085 2006-2008 Pete KofJmann wtr of y Phone No. Hilo: (808) 961-8027
Council Chafr Phone No. Waimea: (808) 887-?043
District 9 -North and South k"ohala Fax No.: (808) 887-207?
E-Mail: phoffmann(a),co.hawaii.hi.us
~1f Oi •NI:~1'
HAWAII COUNTY COUNCIL
County of Hawaii
Hawa:'f (?~unN 6ui/ding Holomua Center
25Aupuni S/reel 6a-1067 M1lamalahoa HiKhwap. Suite C-~
Hilo. Haxai'i 96720 Wnfinea. Nawa~'i 967!3
May 25, 2007 `
TO: Council Members
Hawaii County Council
FROM: ~ Pete Hoffmann
Council Chairperson
SUB.IECT: Transmitting a proposed amendment to Bill 51, Draft 3
An Ordinance Amending Chapter 27, Flood Control, Hawaii County Code'1983
(2005 Edition), as amended, Relating to Stormwater Management
Attached for your consideration is a proposed amendment to Bill 51, Draft 3, relating to Flood
Control, which amends Chapter 27, article 4, section 27-18(c)(6). This subsection imposes new
regulations in areas where the natural grade of the ground surface exceeds ten percent, in order to
adequately mitigate potential flood hazards resulting from man-made alteration of the terrain in
such areas. Because of the length of the bill, I am not attaching the entire bill, but only an excerpt
from the affected section.
"the proposed amendment addresses concerns raised during public testimony at the May 15, 2007
Public Works and Intergovernmental Relations Committee meeting. The proposed new language
clarifies that landscaping, agriculture, and other activities which do not result in the creation of
impermeable surfaces on the site are permitted, with the certification of a professional civil
engineer. The proposed amendment allows adequate land area of smaller lots to be developed
with impermeable surfaces, by increasing the percentage from twenty percent to forty percent of
the total land area. The proposed amendment permits up to forty percent of the site to be
developed with impermeable surfaces, with the certification of a professional civil engineer.
Chapter 27, article 4, section 27-18, Hawaii County Code 1983 (2005 edition), is amended by
adding a new subsection (c)(6) to read as follows:
"(6) Within areas where the grade of the natural elevation of the around surface prior
to construction exceeds ten percent, fi11inQ, erading, and other development
which may increase flooding or erosion hazards shall be prohibited unless a
professional civil engineer licensed in the State of Hawaii certifies that the
Comm. No.
Ref. To: Pruw~!+ µNGI
Serving the Interests of the People of Our Is/and Ref. Date,_„
rrl,~ 1 2pp7
Huwai'i County Is An Equal Opportunity Provider And Employer
development will contain its own runoff and not increase floodine or erosion in
other areas. Creation of impermeable surfaces on such slopin¢ areas will be
limited to no more than fortv percent of the total land area of any lot or
proposed new subdivision. Any measures to be implemented in order to prevent
or decrease run-off or erosion shall be clearly shown or described on the Grading
or infrastructure construction plan."
The following is ared-lined version of the proposed amendment, which shows the proposed
changes to Bill 51, Draft 3. New language is underscored, and the proposed deletions are
enclosed in brackets in strikethrough font.
"(6) Within areas where the grade of the natural elevation of the ground surface
prior to construction exceeds ten percent, filling, grading, and other
development which may increase flooding or erosion hazards shall be
prohibited unless a professional civil engineer licensed in the State of Hawaii
certifies that the development will [n^o~e contain its own runoff [^o~i~b
x......11.. o :~ti^,. ,.;~o F r,,.o.. /t.^^.. ..vl.e. .,o..ef ter:.... ..1....0.. ot.. ~
,
m~e~ and not increase flooding or erosion in other areas.
...^a° ^ ~ Creation of impermeable surfaces on such sloping
areas will be limited to no more than [tiveaty] fortv percent of the total land area
of~any lot or proposed new subdivision. Any measures to be implemented in
order to prevent or decrease rumoff or erosion shall be clearly shown or
described on the grading or infrastructure construction plan."
PH/lc
2