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ARCHIVED REPORTS XR0003295
Environmental Health - Public
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EHD Program Facility Records by Street Name
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DIAMOND
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1050
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2900 - Site Mitigation Program
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PR0001781
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ARCHIVED REPORTS XR0003295
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Last modified
7/3/2019 12:23:11 PM
Creation date
7/3/2019 10:46:03 AM
Metadata
Fields
Template:
EHD - Public
ProgramCode
2900 - Site Mitigation Program
File Section
ARCHIVED REPORTS
FileName_PostFix
XR0003295
RECORD_ID
PR0001781
PE
2960
FACILITY_ID
FA0004090
FACILITY_NAME
DIAMOND WALNUT GROWERS INC
STREET_NUMBER
1050
STREET_NAME
DIAMOND
STREET_TYPE
ST
City
STOCKTON
Zip
95205
APN
155 320 19 5
CURRENT_STATUS
01
SITE_LOCATION
1050 DIAMOND ST
P_LOCATION
01
QC Status
Approved
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f <br /> ' Groundwater Sampling Protocol <br /> ' Prior to arriving at the sampling site, all sampling equip- <br /> ment will be washed with laboratory grade detergent, and <br /> rinsed twice with tap water, once with acetone, and once with <br /> ' deionized water. The sample washing procedure will be car- <br /> ried out on-site before sampling of other monitoring wells, <br /> in such cases where more than one monitoring well is to be <br /> ' sampled, with the sampling device. <br /> Immediately prior to sampling, the depth to water (DTW) level <br /> in the well will be recorded. The apparent thickness of <br /> ' product on top of the groundwater, if present, will be <br /> measured using an interface probe or clear graduated acrlyic <br /> bailer. The procedure for conducting these monitorings are <br /> ' presented in the Groundwater Monitoring Protocol attachment. <br /> If free product is detected, analysis of groundwater for <br /> ' dissolved product will not be conducted. The product will be <br /> sampled for content, if collection of a sample is possible. <br /> Before collecting at least two groundwater samples from each <br /> well, the well will be purged until indicator parameters <br /> (temperature, conductivity and pH) stabilize. This will <br /> entail the removal of at least three or more well casing <br /> volumes by bailing or pumping. The criteria for determining <br /> well casing volumes and storage of purged waste is discussed <br /> in the Well Development Protocol section. The indicator <br /> parameter measurements will be taken both before and after <br /> purging of each well casing volume. once the well is purged <br /> ' and well water chemistry has stabilized, a sample will be <br /> collected after the water level approaches 80 percent of its <br /> initial elevation. Where water level recovery is slow, the <br /> ' sample will be collected after stabilization is achieved and <br /> enough water is present to fill sample containers. <br /> ' Cross contamination from transferring pumps from well to well <br /> will be avoided by utilizing dedicated equipment. Where this <br /> is not feasible , thorough cleaning of equipment will be <br /> performed between sampling rounds. Sampling will proceed <br /> from the least contaminated to the most contaminated well, if <br /> information is available before sample collection, or if it <br /> is indicated by field evidence. Where several types of <br /> ' analysis will be performed for a given well individual sam- <br /> ples will be collected in the following order: <br /> 1. Volatile organics <br /> 2 . Purgeable organic carbon <br /> 3 . Purgeable organic halogens <br /> 4 . Total organic carbon <br /> 5. Total organic halogens <br /> 1 <br />
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