HomeMy WebLinkAboutPermit File BLD-2019-0293 3938 Rock Ridge Parkway (7)93 F� P�oC P:Z� a,
Waypoint.,
ANALYTICAL.
Anaheim Office
Lab No: 20-169-0009
June 29, 2020
Skagit Soils, Inc.
13260 Ball Road
It. Vernon, WA 98273
Att: Craig
PRO]ECT: GENERAL SOIL MIX
Attached are the results of the analysis performed on a soil sample that was received by our laboratory
on 06/17/2020. This sample was analyzed for nutrient levels, general chemistry, and physical
characteristics in preparation for its use as a general landscape import topsoil.
Analytical Results
The reaction of the soil is slightly acidic at 6.9 on the pH scale, which is in the preferred range for most
plants and no pH adjustment is recommended. Qualitative lime is favorably absent.
Salinity (ECe) is elevated indicated by the 4.4 dS/m reading but is due primarily to an abundance of the
soluble nutrients nitrogen, calcium, magnesium, sulfate, and potassium which are not as injurious as
other salts, such as sodium. The sodium adsorption ratio (SAR) is favorably low, indicating that the
sodium present in this sample is properly balanced by calcium and magnesium. Boron is safely low, yet
sufficient for plant nutrition.
In terms of fertility, nitrogen and potassium levels are abundant. Phosphorus and magnesium are
optimum. Calcium is moderately low. For the minor elements, copper is low and iron is moderately low.
Zinc and manganese are optimum.
The texture of the soil is a `sandy loam', according to USDA classification standards. The combined silt
and clay content was measured at 28.6% by dry weight, indicating that this material will be a good
textural match for a broad range of native soils. The estimated water infiltration rate is 0.27 inch per
hour. Organic content is ample at 8.08% by total dry weight of the sample.
Comments and Recommendations
With regard to the slightly elevated salinity level, applying thorough initial irrigations after planting to
accomplish a modest leaching fraction would reduce the salinity to a safely low level in the root zone for
salt sensitive species, as long as drainage is sufficient to allow water to move through the soil. For
general landscape applications, this amended material should not be placed to a depth greater than 12
inches due to the relatively high amount organic matter present.
Due to the already favorable nutrient and organic matter status, no additional fertilizers or amendments
are required prior to planting.
4741 East Hunter Ave., Ste. A Anaheim CA 92807
(714) 282-8777 � (714) 282-8575 fax
www.waypointanalytical.com
Page 1 of 3
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Waypointu
ANALYTICAL
Page 2
Skagit Soils, Inc.
June 29, 2020
Tree and Shrub Planting Guidelines
1. Excavate planting pits at least twice the diameter of the rootball.
2. The top of the rootball should be at or slightly above final grade.
3. Organic material is not required in the backfill.
4. Do not cover the original rootball with other soil. Ideally, a temporary soil berm is often constructed
around the outer edge of the rootball to help channel water into the rootball and then into
surrounding soil until roots are established in the backfill and the rootball is no longer the sole source
of water for the plant.
5. Ideally, a weed and turf free zone, preferably 2-3 ft. in diameter, should be maintained just beyond
the diameter of the planting hole. A 2-4 inch deep layer of coarse mulch can be placed around the
tree or shrub; mulch should be kept a minimum 4-6 inches from the trunk.
Maintenance Fertilization
The plants being installed directly into this soil can be maintained with a nitrogen only fertilizer for the
first year of establishment. For groundcover and mass planting areas, uniformly broadcast sulfur coated
urea at the rate of 5 lbs. per 1000 sq. ft. The first application should occur approximately 90-120 days
after planting, with repeat applications every 60-90 days or as growth and color dictate. Tree and shrub
plantings can be maintained with the above fertilizers; however, the frequency between applications
should be every 120 days, with the first application 120 days after planting or as growth and color
dictate. Follow each fertilization with a thorough irrigation. When plants have become well established,
fertilizer applications can be less
frequent.
As noted above, iron is below optimum. When micronutrients are low, deficiencies can sometimes show
in the plants. If deficiencies show once plants have become established, they may be addressed upon the
first sign of deficiency. Iron deficiency symptoms are often characterized by yellow, almost white,
interveinal chlorosis on the youngest growth. If these symptoms are apparent once plants are
established, then application of iron chelate at the manufacturer's label rate may improve appearance.
Chelates are generally more effective on alkaline soils than some of the other forms of trace elements.
If we can be of any further assistance, please feel free to contact us.
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Joe Kiefer, CCA
4741 East Hunter Ave., Ste. A Anaheim CA 92807
(714) 282-8777 �' (714) 282-8575 fax
www.waypointanalytical.com
Page 2 of 3
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13260 Ball Road
Mt. Vernon, WA 98273
(360) 424-0199
7/17/2020
From: Craig Culmback
Skagit Soils Inc
Skagit Soils Inc certifies that our General Soil Mix is a three way soil mix
consisting of topsoil, sand and compost. Fully mixed and screened.
The compost complies with the processes, testing and standards specified in WAC 173-
350. As a member of the US Composting Councils Seal of Testing Assurance program
our compost meets the highest standards in the industry.
The sand is bank sand from several local pits that we screen through a 1/4 screen before
mixing.
The topsoil is locally excavated sandy loam that we haul in from carefully inspected sites.
We have been producing this mix since 1998 with great success.
Craig Cuhnback
Secretary /Treasurer
Skagit Soils Inc