hort.net Seasonal photo, (c) 2006 Christopher P. Lindsey, All Rights Reserved: do not copy
articles | gallery of plants | blog | tech blog | plant profiles | patents | mailing lists | top stories | links | shorturl service | tom clothier's archive0
 Navigation
Articles
Gallery of Plants
Blog
Tech Blog
Plant Profiles
Patents
Mailing Lists
    FAQ
    Netiquette
    Search ALL lists
    Search help
    Subscription info
Top Stories
Links
sHORTurl service
Tom Clothier's Archive
 Top Stories
Disease could hit Britain's trees hard

Ten of the best snowdrop cultivars

Plant protein database helps identify plant gene functions

Dendroclimatologists record history through trees

Potato beetle could be thwarted through gene manipulation

Hawaii expands coffee farm quarantine

Study explains flower petal loss

Unauthorized use of a plant doesn't invalidate it's patent

RSS story archive

RE: soils testing on urban lots

  • Subject: RE: [cg] soils testing on urban lots
  • From: "Corrie Zoll" czoll@greeninstitute.org
  • Date: Thu, 3 Oct 2002 09:09:46 -0500
  • Content-class: urn:content-classes:message
  • Thread-index: AcJqVI2t09cLq5gBQeiN0va8LWTGwgAkCXng
  • Thread-topic: [cg] soils testing on urban lots

In Minneapolis, the city has a Children's Environmental Health Division 
http://www.ci.minneapolis.mn.us/environmental-health/index.asp#TopOfPage

that provides free soil lead testing kits.  Through the county extension
service (and the University of Minnesota), residents can get a much more
thorough soil test at a pretty reasonable cost, starting at $15, I
think. 
http://soiltest.coafes.umn.edu/

In Minnesota, the threshold for contaminated soil is 100 parts per
million (ppm).  But soil is not considered hazardous until it is above
400 ppm.  Soil lead levels in Minneapolis average about 300 ppm, which
is common for an urban area.  Last fall, we screened 15 gardens in one
neighborhood for lead.  Most tests came back at about 100 ppm.  One
garden tested above 300 ppm.

We were surprised this year to find that one of the gardens showed
elevated levels of arsenic.  The highest level found was 38 ppm, and
this was from a sample taken 6-12" below ground level.  We're waiting
for results from some follow-up testing to get a batter idea of the
extent, risks, and source of the contamination.

Corrie Zoll
Minneapolis


-----Original Message-----
From: Bill Maynard [mailto:bMaynard@WoodRodgers.com] 
Sent: Wednesday, October 02, 2002 3:39 PM
To: 'community_garden@mallorn.com'
Subject: [cg] soils testing on urban lots

What you don't know ...might hurt you....

As our 30 year old Mandella com garden site in sacramento has recently
found
out:

"some areas with higher than acceptable levels of Lead, DDT, and
PAH'S(polyaromatic Hydrocarbons left from the incomplete burning of gas,
coal, etc) were found."
The levels of lead that sacramento county deems acceptable is under 200
parts per million (some professionals say 80 is the highest lead should
be)... this site had 500 to 1300 parts per million....plus other toxins

the site had older homes from the 1860's on it before it was torn down
back
in the 1960's  the garden started in the 1970's....apparently no testing
was
done....

As I understand it...the complete palette of soil tests (lead, heavy
metals,
PCB's, PAH's, etc, etc) costs $700 per sample (many sites would require
12
or more samples....

Question 1:
are there any places that will do all these tests for free or low cost
for
us community gardeners? 

Question 2:
How many urban gardens have had their soil tested for lead and other
toxins?
and what levels did they find?

this will be a big issue in the sacramento area and will be the first
HIGH
hurdle for each new com garden in the area. (we have approx 6 CG's
proposed
in various stages in the long approval process)

In the mean time....

Each garden should ask itself: was the lot built on before?

Answer: Your local USDA office will have old aerial photos of your area
back
to the 1930's and other photos taken every 10 years or so to the
present...

Article was in oct 2 issue of the sacramento bee

http://www.sacbee.com/content/news/story/4631378p-5649671c.html

---------------------------------------------This email and any files
transmitted with it are confidential and are intended solely for the use
of
the individual or entity to whom they are addressed.  This communication
represents the originator's personal views and opinions, which do not
necessarily reflect those of Wood-Rodgers, Inc..  If you are not the
original recipient or the person responsible for delivering the email to
the
intended recipient, be advised that you have received this email in
error,
and that any use, dissemination, forwarding, printing, or copying of
this
email is strictly prohibited.  If you received this email in error,
please
immediately notify mrodriguez@woodrodgers.com. 

______________________________________________________
The American Community Gardening Association listserve is only one of
ACGA's services to community gardeners. To learn more about the ACGA and
to find out how to join, please go to http://www.communitygarden.org


To post an e-mail to the list:  community_garden@mallorn.com

To subscribe, unsubscribe or change your subscription:
https://secure.mallorn.com/mailman/listinfo/community_garden

______________________________________________________
The American Community Gardening Association listserve is only one of ACGA's services to community gardeners. To learn more about the ACGA and to find out how to join, please go to http://www.communitygarden.org


To post an e-mail to the list:  community_garden@mallorn.com

To subscribe, unsubscribe or change your subscription:  https://secure.mallorn.com/mailman/listinfo/community_garden





 © 1995-2015 Mallorn Computing, Inc.All Rights Reserved.
Our Privacy Statement
Other Mailing lists | Author Index | Date Index | Subject Index | Thread Index