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Because there is now one fax machine for the entire floor
(and not just the water supply group), please make sure you include the name of
the person to whom you’re sending the fax!
Otherwise, it can slow down delivery.
For those systems that are conducting asbestos sampling, the
requirement is to collect the sample at a tap after the longest length of AC pipe. Except in rare instances, the pipe is
typically found in the distribution system.
Do not collect the sample from a hydrant; it should be collected from an
inside drinking water faucet.
The lab
will provide sampling instructions, but in general it’s the cold water tap,
aerator removed, run water for a few minutes until the temperature changes, then
collect sample. The analytical procedure
involves the use of an electron microscope and opening/flushing the hydrant can
stir up enough small particulate to interfere with the test.
The operation permit will indicate if
asbestos testing is required for the community and non-transient non-community
systems; it is not required at any transient non-community systems.
The Water Supply Rules package will be presented
to the Environmental Protection Commission at their December 19th
meeting, with the request to proceed with rulemaking. The package includes the Groundwater Rule,
the Lead and Copper Rule Short-term Revisions, the Revised Total Coliform Rule,
many analytical methods, and changes to existing rules. The entire package, including the Notice of
Intended Action and the rule changes, will be available at this website in the
near future. Watch the listserv for further information.
From Circle of Blue
WaterNews, 11/15/2017
This is an interesting article that summarizes much of the
current knowledge and management of Legionella,
which are bacteria that are ubiquitous in the environment and can thrive in
water systems. It does particularly well in warm water plumbing and is an
inhalation risk to people rather than the more typical ingestion risk. It causes a type of pneumonia and is a
particular risk to immune-compromised people and older people. Read the full article.
From ASDWA Weekly Update, November 10, 2017
“The U.S. General
Accountability Office (GAO) has published a report on the findings of its study
entitled, “Climate Change: Information on Potential Economic Effects Could Help
Guide Federal Efforts to Reduce Fiscal Exposure.” The GAO report
examines: methods used to estimate the potential economic effects of
climate change in the US; what is known about these effects; and the extent to
which information about these effects could inform efforts to manage climate
risks across the federal government.
The GAO study
included reviews of other studies, interviews with experts, and a comparison of
federal efforts to manage climate risks with leading practices for risk
management and economic analysis. EPA’s “Climate Change Impacts and Risks
Analysis” project that looks at six sectors: health, infrastructure
(including water infrastructure), electricity, water resources (and
supply), agriculture and forestry, and ecosystems, was one of two national
studies used for the report.
Based on the study
findings, GAO recommends that the appropriate entities within the Executive
Office of the President (EOP), including the Office of Science and Technology
Policy, use information on potential economic effects to help identify
significant climate risks and craft appropriate federal responses. To view
the report, visit the GAO website.”
From Water Research Foundation,
11/16/2017
The Water Research Foundation, WRF, is holding a series of three webinars over the next three months presenting
the results of a project (#4326) entitled “Advanced Condition Assessment and
Failure Prediction Technologies for Optimal Management of Critical Water Supply
Pipes.” The 1.5 hour webinars are free
and open to the public, and registration is required.
First
webinar: Thursday, November 30th, 2:00 p.m. CST
Registration:
Register
Online
Topic:
“This webcast will re-examine potential influencing factors by using data
obtained from some 30 pipes exhumed in the Sydney (Australia) and Newcastle
region and a model for the development of the corrosion penetration as a
function of time developed. … The second
part of the webcast will focus on the failure mechanisms of pipe barrel of
large diameter cast iron pipes subject to traffic loads and water pressures.”
Second
webinar: Tuesday, December 5th, 2:00 p.m. CST
Registration: Register
Online
Topic:
“This webcast will convey the research work carried out on the suitability of a
selection of direct Condition Assessment (CA) techniques in failure prediction
of critical cast iron (CI) mains. … The second part of the webcast will focus
on the quantitative assessment of failure of corroded cast iron pipes.”
Third
webinar: Thursday, January 11, 2018, 2:00 p.m. CST
Registration:
Register
Online
Topic:
“Sydney Water has continuously implemented research outcomes from this project
to defer capital expenditure by $10 million and better target their renewal
program, which has reduced their yearly critical water main renewal costs from
$50 million to $30 million. This webcast will show how Sydney Water has already
implemented and will continue to implement the outcomes to achieve improved
customer satisfaction and targeted renewal. This includes an operationalization
project to validate and implement the outcomes.”
From the National Weather Service in Des Moines' Fall Weather
Whisper
“Temperatures
during the summer to early fall where warmer than normal for much of the
time. June into much of July was mostly
above normal with a few periods of hot weather.
In particular, temperatures around the 20th of July saw
readings reach 100 degrees in a few locations including Ottumwa and Des
Moines. However, the heat broke by late
July with readings much below normal throughout the state during the month
August. The cool readings in August were
enough to cancel out the heat of June and July producing a near normal
temperature for the summer season (June-August). September saw a return to above normal
readings statewide with these warmer readings continuing into October.
It
was feast or famine with rainfall across the state this past summer with some
locations receiving adequate precipitation while other saw record low
values. Locations primarily across
northern Iowa saw periodic rainfall with a few heavy rainfall events in
June. However, farther south, rainfall
became much more spotty and light with large swaths of central and southern
Iowa having rainfall deficits of 6 to 10 inches by late August. This produced severe to extreme drought
conditions in south central to southeast Iowa by mid to late summer and ruined
crops in some instances. There was some
relief by later September into October as rainfall returned across much of the
state, although much too late to help crop that had already matured.”
See
the article on page 9 for the state maps and statistics from 145 years of
records.
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