BLD2010-0646BMPs for Description of Pollutant Sources: Landscapi��g can include grading, soil
Landscaping transfer, vegetation removal, pesticide and fertilizer applications, and
and Lawnl � waterinb. Stormwater contaminants .include topic orbanic compounds,
Vegetation heavy metals, oils, total suspended solids, coliform bacteria, fer�ilEzers, and
Management pesticides.
Lawn and vegetation management can include cont�-o1 of objectionable
weeds, insects, mold, bacteria and other pests with chemical pesticides and
is conducted commercially at comme�•cial, industrial, and residential sires.
Examples include weed control on golf course lawns, access roads, and
utility corridors and during landscaping; sap stain and insect control on
lumber and logs; rooftop moss removal; killing nuisance rodents;
fungicide application io patio decks, and residential lawn/plant cage.
Toxic pesticides such as pentachlorophenol, carbamates, and
organome�allics can be released to the environment by leaching and
dripping from treated parts, container leaks, product misuse, and outside
storage of pesticide contaminated materials and equipment. Poor
management of the vegetation and poor application of pesticides or
fertilizers can cause appreciable stormwater contamination.
Pollutan# Control Approach: Control of fertilizer and pesticide
applications, soil erosion, and site debris to prevent contamination of
stormwatier.
Develop and implement an �n�egrated Felt Manabement Phan (ZPM} and
use pesticides only as a last resort. If pesticides/herbicides are used they
must be carefully applied in accordance with label instructions on U.S.
. _ Environmental Protection Agency (EPA) registered materials. Maintain
appropriate vegetation, with proper fertilizer application where
practicable, to control erosion and the discharge of stormwater pollutants.
Where practicable grow plant species appropriate for the site, or adjust the
soil properties of the subject site to grow desired plant species.
Applicable Opera#tonal BMPs for Landscaping:
• Install engineered soilllandscape systems to improve the infiltration
and regulation of stormwafier in landscaped areas.
• Do not dispose of collected vegetation info waterways or storm
drainage systems.
Recommended Additional �perat�onal BMPs for Landscaping:
Conduct mu�ch�mowing whenever practicable
• Dispose of grass clippings, leaves, sticks, or other collected vegetation,
by composting, if feasible.
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February 2005 Volume 1 V -Source Control BMPs 2�23
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DAVIDO CONSULTING GROUP, INC.
CIVIL •STRUCTURAL •LAND USE
STRUCTURf1L CALCULATIONS
LATERAL DESIGN
WA FEDERAL - EDMONDS
EDMONDS, WA
Seattle Office � Whidbey Qf�ice
l 5029 Bothell Way NE. Suite 600, Lake Forest Park, WA 98155 PO Box 1132, Freeland, WA 9$249
Ph. 20b.523.Q024 Fax 206.523.1012 Ph. 3b0.331.4131 Fax 3b0.331.5131
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Earth Solu#ions NW B�R�NG NUMBER B-�
2881 152nd Avenue N.E. PAGE 2 4F 2
f � � Redmond, Vlfashing#on 98052
Telephone: 425-284-3300
Fax: 425-2$4-2855
CLIENT .Washing#on Federal PROJECT NAME 229 Main Street
PROJECT NUMBER 1817.02 PROJECT LOCATION Edmonds, Washi�gtvn
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Brown silty SAND, very dense, most
SS 100 2D+Sg-�0 MC = 13.60% SM
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21 � trace g ravel
Boring terminated at 21.5 feel beiow existing grade. No g�aundwaier
encountered during excavation. Boring backfilled with benton�te.
Bottom of hole at 29.5 feet.
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