HomeMy WebLinkAboutCity/County Planning Board Minutes 03.07.2013 MINUTES
LAUREL CITY - COUNTY PLANNING BOARD
March 7, 2013 6:00 pm
COUNCIL CHAMBERS
MEMBERS PRESENT: Kathy Siegrist, Chairman
Dick Fritzler, County Rep.
Dan Koch, City Rep.
Lee Richardson, Co. Rep.
Greg Nelson, Member at Large
Don Brown, City Rep.
Judy Goldsby, County Rep.
Dennis Eaton, City Rep.
Hazel Klein, City Rep. (arrived at 6:07 pm)
OTHERS PRESENT: Monica Plecker, City Planner
Cheryll Lund, City Secretary
Kurt Markegard, Laurel Public Works Director
CALL TO ORDER: Chairman Kathy Siegrist called the meeting to order at 6:00 pm.
ROLL CALL: A roll call was taken. Members present were Koch, Fritzler, Goldsby, Richardson, Brown,
Nelson and Siegrist. (Klein was not present for the roll call)
PUBLIC INPUT:
Citizens may address the Board regarding any item of City business not on the agenda. The duration for
an individual speaking under Public Input is limited to three minutes. While all comments are welcome,
the Board will not take action on any item not on the agenda.
There was no public present.
APPROVAL OF MINUTES FROM PREVIOUS MEETING: A motion was made by Dan Koch and seconded
by Judy Goldsby to approve the minutes of the February 7, 2013, meeting. The motion carried by a vote
of 7 -0. (Klein was not present for the vote)
NEW BUSINESS: None.
OLD BUSINESS: Lot Coverage presentation by Public Works Director Kurt Markegard.
Monica stated that last month the board talked about lot coverage and the relationship it has to storm
water and then requested more specific information relating to this issue. Kurt was asked to present
information to the group that would provide insight on that relationship.
Kurt handed out information to the board. He stated his presentation is a simplistic understanding of
how the Public Works Department looks at lot coverage as it is compared to how much water runs down
our city streets and into the storm drains, and that there is a direct relationship between many non -
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porous surfaces are located in the city which includes homes, garages, sidewalks, curb and gutter and
streets.
Kurt handed out a map that he did his Storm Water Calculations on (see attached)
The area surrounded by the yellow line has 12,167,000 square feet of surface area.
Kurt explained in the event of a ten year rain event, this area would have about 18,250,500 gallons of
rain water hit the ground. (A ten year rain event is calculated as 2.4 inches within a 24 hour period.)
It is assumed that 80% of the water will leave the area, as per DEQ standards for subdivisions,
14,600,400 gallons will need to go somewhere in the ten year rain event.
The red square highlights one city block and if you minus street right -of -ways as well as alley right -of-
ways, 126,000 gallons of rain water will fall on the private Tots.
If all of the lots have 30% maximum lot coverage, the amount of water that would need to be dealt with
is 37,800 gallons for one city block.
Increasing the lot coverage by 5% would mean an additional 6,300 gallons of rain water would be added
bringing the total to 44,100 gallons for one city block.
If lot coverage were to increase by 5% for more than 200 city blocks, an additional 1,260,000 gallons of
rain water will be discharged to the surrounding yards and streets. This figure does not include the
public right -of -ways.
The scenario as described does not take into account variables such as slope or topography, soil types
and landscaping features.
Allowing additional lot coverage can increase the need for additional storm water features like
detention ponds and storm water collection systems. Furthermore, it could also lead to higher ground
water elevations and Laurel already has higher ground water elevations part of which is due to the
irrigation canals within the area and the town being built so close to the River.
In the early 30's prior to the railroad underpass being built the city downtown area flooded with every
rain event. In 1936 the underpass was installed along with an 8 to 10 inch pipe that would send the
water to the river. That became the only city storm water drain in town and it flooded quite a bit even
up through the 1970's. In 1996 they abandoned the underpass drain and put in new grates in the
bottom and a new pump station with the wet well that pumps the water to a storm drain on E. Railroad
which goes down and crosses over the interstate and comes out on Bernhardt property behind the
Refinery and directly into the river.
Kurt stated that at this time the Existing Storm water Facilities include:
Irrigation Ditches Running Through Portions of the Community
• Big Ditch
• High Ditch
• Cove Ditch
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3 District Storm Sewer Systems
• 8th Avenue Storm Sewer
• West Storm Sewer
• East Storm Sewer
2 Major Drain Ditches
• Laurel Drain
• Nutting Drain
The south side of Laurel and the South Laurel Business District (SE 4 Street) has no storm water
facilities.
Kurt reported at this time the storm drains are running at maximum capacity with the Public Works
Department and Maintenance crews working on a constant basis to keep the town from flooding during
major rain events.
Kurt referred the Board to information he handed out that is from the February 2007 Engineering
Report done by Great West Engineering, Inc. on the Storm water System for the City of Laurel.
(Attached) He invited the Board to come talk with him during working hours if they feel they need more
information or explanation.
Monica asked the Board if they wanted her to draw up a draft regarding upping the maximum lot
coverage by 5 %. The Board members felt that at this time it would not be within the city's best interest
to up the maximum lot coverage by 5 %.
MISCELLANEOUS:
Monica told the board that a training session for the board has been set up for Monday, April 8, 2013
from 5:30 to 7:30 pm.
There is a public hearing for a zone change request for Tender Nest set for the meeting on April 4, 2013
at 6:00 pm.
The meeting was adjourned at 7:00 pm.
Respectfully submitted,
Odtit
Cheryl) und, Secretary
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