annotated rio grande campus drinking water test results for lead
TRANSCRIPT
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8/8/2019 Annotated Rio Grande Campus Drinking Water Test Results for Lead
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Baer Engineering and Environmental Consulting, Inc.
7756 Northcross Drive, Suite 211 Austin, Texas 78757Telephone: 512/453.3733 Fax: 512/453-3316 Toll Free: 800/926-9242
www.BaerEng.com
October 20, 2010
EHS and InsuranceAustin Community College
9101 Tuscany WayAustin, TX 78754
Sent via U.S. Mail and via e-mail to [email protected].
Attention: Mr. David Watkins
Reference: DRINKING WATER SAMPLING FOR LEAD - October 2010Austin Community College, Rio Grande Campus1212 Rio Grande Street, Austin, Texas 78701Baer Engineering Document No. 091062-8i.190
Dear Mr. Watkins:
Baer Engineering and Environmental Consulting, Inc. (Baer Engineering) is pleased to submitthis report regarding the drinking water sampling for lead, performed on October 3, 2010.Sampling was conducted in the Main Building at the Austin Community College (ACC) RioGrande Campus.
FIELD SERVICESMr. Zach Rayburn mobilized to the site on October 3, 2010, and met with you at 5:00 pm tocollect drinking water samples for laboratory analysis of lead. Samples were collected from 12water fountains and several locations in the cafeteria. Samples collected from the cafeteriaincluded cold tap water from three sinks and one soda machine. Ice was collected from the icedispenser and one hot water sample was collected from the hot water tap of the coffeemachine. Our sampling protocol included the following steps:
Unpurged, first-draw water samples were collected in laboratory-provided, clean, 250milliliter plastic containers.
The pH of each sample, except for the ice sample, was measured using a CorningPS-15 pH meter.
Samples were delivered to the laboratory within 24-hours of sample collection.
Samples were collected from the cafeteria. Each sample was collected by turning on the coldwater tap for each sink and the soda machine. The same procedure was used for the hot water
tap of the coffee dispenser. The ice sample was collected directly from the ice bin.
Samples were collected from the water fountains by removing each fountains front cover andopening the water valve. At the time of sampling, the water valve to the water fountains hadbeen turned off and water coolers were provided at each water fountain location. Removing thefront cover of each water fountain revealed a single water source for paired water fountains.Given this information, only one sample was collected from paired water fountains rather than
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Austin Community College: 091062-8i.190 October 20, 2010Drinking Water Re-Sampling for Lead, Rio Grande Campus, Austin, Texas Page 2
Baer Engineering and Environmental Consulting, Inc.
collecting samples from each paired fountain as was done in previous sampling events.Unpurged first-draw samples were collected once the water valve was opened.
The samples were delivered to the Lower Colorado River Authority - Environmental LaboratoryServices (ELS) of Austin, Texas, for analysis of lead by EPA Method 6020/200.8. ELS is astate-certified drinking water laboratory. A three-day turnaround time was requested for the
analyses.
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8/8/2019 Annotated Rio Grande Campus Drinking Water Test Results for Lead
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AustinCommunityCollege:
091062-8i.190
October20,
2010
DrinkingWaterRe-SamplingforLead,
RioGrandeCampus,Austin,
Texas
Page3
BaerEngineeringandEnvironmentalConsulting
,Inc.
DATASUMMARY
Thefieldmeasurementsandthelaboratoryreportare
summarizedinthetablebelow
.Acopyoftheanalyticalrepo
rtisattachedto
thisletter.Thetablebelowishighlightedtoshowthefollowing:
LocationsinBLUEarefountains;
LeadresultsinGREENcontainnomeasurable
lead,abovethelaboratorysPracticalQuantitationLimit(PQL)
;
LocationsnotsampledduringasamplingeventareindicatedasDidNotSamp
le(DNS).
Location
October
Sample
No.
Location
May
pH
May
Lead
mg/L
Aug
pH
August
Lead
mg/L
Sept
pH
S
eptember
Lead
mg/L
Oct
pH
October
Lead
mg/L
NOTES
MAINBUILDING
Basement
Fountain,s
outhend1(N)
9.1