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SU0005971 SSCRPT
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SU0005971 SSCRPT
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Last modified
5/7/2020 11:31:57 AM
Creation date
9/6/2019 9:58:03 AM
Metadata
Fields
Template:
EHD - Public
ProgramCode
2600 - Land Use Program
FileName_PostFix
SSCRPT
RECORD_ID
SU0005971
PE
2622
FACILITY_NAME
PA-0600132
STREET_NUMBER
29888
Direction
N
STREET_NAME
MACKVILLE
STREET_TYPE
RD
City
CLEMENTS
APN
00917004 & 05
ENTERED_DATE
3/21/2006 12:00:00 AM
SITE_LOCATION
29888 N MACKVILLE RD
RECEIVED_DATE
3/21/2006 12:00:00 AM
P_LOCATION
99
P_DISTRICT
004
QC Status
Approved
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FilePath
\MIGRATIONS\M\MACKVILLE\29888\PA-0600132\SU0005971\SSC RPT.PDF
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EHD - Public
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I%W .J <br /> Previous Exposure Assessments made on typical San Joaquin Valley soils suggest an extremely low <br /> probability of adverse health effects from soil DDT/DDD and DDE concentrations(if the <br /> concentrations even exist). <br /> Since the subject property is located outside of what would be considered agricultural farmland <br /> during the time that DDT was used, it is unlikely it exists in the property soils. Nevertheless, the <br /> environmental fate data are presented below for DDT, and its degradates DDD and DDE. <br /> DDT. Common name:Agritan,Anofex,Azotox,et al. <br /> Half-lives in the environment <br /> Air: 17.7-177 h. <br /> Surface water: 73.9 h for a pond 1 in deep.Degradation half-life of about 10 yr-average from loss rates <br /> determined in Lake Michigan. <br /> Groundwater: 16 d to 31.3 yr. <br /> Sediment. 3 to 5 yr <br /> Soil: 2-15.6 yrs based on observed rates of biodegradation in aerobic soils under field conditions. Avg. <br /> half life of-12 yrs in 3 different soils for -50 ppm in soil.(conversion of p,p'-DDT to p,p'-DDE). <br /> Environmental Fate Rate Constants or Half-Lives: <br /> Volatilization: Half-life of 3.7 d for water depth of 1 in,from soil w/h-1 of 578 h <br /> Oxidation:Photooxidation half-life of 168-8400 h in water, 17.7-177 h in air <br /> Hydrolysis: Estimated first-order half life of 22 yr <br /> Biodegradation:Aqueous aerobic half-life of 2-15.6 yrs <br /> DDE. Common name: DDE(p,p'-DDE;o,p'-DDE),product of DDT degradation. <br /> Half-lives in the environment: <br /> Air:Atmos.transformation lifetime est.to be< 1 d. <br /> Surface water:Hydrolytic half-life of >120 yr,est.half-life>300 d in lakes. <br /> Groundwater:N/A <br /> Sediment:N/A <br /> Soil:Field half life of 1000 d <br /> Biota: Elimination half-life of 340 d(rainbow trout),300 d for birds. <br /> Environmental Fate Rate Constants or Half-Lives: <br /> Volatilization:N/A <br /> Oxidation:N/A <br /> Hydrolysis:>120 yr <br /> Biodegradation:N/A <br /> DDD. Common name:DDD,TDE(tetrachlorodiphenylethane),product of DDT deg. <br /> Half-lives in the environment: <br /> Air: 17.7-177 h <br /> Surface water:2-15.6 yr. Groundwater: 1680-270,000 h based on anaerobic soil study data <br /> Sediment:N/A <br /> Soil: Field half life of 2-15.6 yrs based on observed rates of biodeg. of DDT <br /> Biota: 119 hr in mussels. <br /> Environmental Fate Rate Constants or Half-Lives: <br /> Volatilization:Aquatic approx. 1 mo. <br /> Oxidation:Aquatic half-life approx. 22 yr <br /> Hydrolysis: half-life of 570 d @ pH 9 and 190 yr @ pH 5 <br /> Biodegradation:Aqueous aerobic half-life of 2-15.6 yr <br /> Page -6- <br /> Chesney Consulting <br />
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