r
<br /> MONITORING AND REPORTINOROGRAM NO. R5-2015-0810CaE
<br /> y_ .
<br /> FORMER OCCIDENTAL CHEMICAL CORPORATION FACILITY, LATHRO1lvEi
<br /> SAN JOAQUIN COUNTY
<br /> Table 1 JUL d 24 2015
<br /> Sampling locations,Analytes,and Sampling Frequency'2,1
<br /> 1wA11150MIAh
<br /> - -4 v I e . ! IS t ML
<br /> volume F-`= IV-;^'7DR'7T.SCgiT
<br /> Injected,
<br /> Rate
<br /> Injected, Total Nitrate,
<br /> OC&OP Injection BHC Dissolved Chloride,
<br /> Sampling Location I EDB. I DBCP Sulfoiane I Pesticides Pressure Isomers Herbicides Solids Sulfate
<br /> All wells shall be monitored semi-annually for water levels.
<br /> 2 Wells that are sampled semi-annually shall be sampled during the first and third quarters. ,
<br /> 3 Wells that are sampled annually shall be sampled during the third quarter,
<br /> In the event the Discharger begins injecting into the INJ-14,EW-04 shall be sampled quarledy. If sulfolane,EDB,and DBCP concentrations show stable to
<br /> decreasing trends,the sampling frequency for these analytical suites may be reduced to annual sampling with Central,Valley Water Board staff concurrence.
<br /> s If sulfolane,EDB,and/or DBCP are not detected in the monitoring wells above the reporting limit for four consecutive routine quarterly sampling
<br /> events,or the concentrations show stable to decreasing trends,the sampling frequency for these analytical suites may be reduced to semi-annual
<br /> sampling for that well with Central.Valley Water Board staff concurrence.
<br /> e If BHC isomers,OC and OP pesticides,and herbicides are not detected in the monitoring wells above their respective reporting limits for
<br /> four consecutive routine quarterly sampling events,these analytical suites may be removed from the schedule for the well(s)with
<br /> Central Valley Board staff concurrence.However,the City of Lathrop or any other municipal well(s)shall be sampled semi-annually.
<br /> 7 After four consecutive routine quarterly sampling events,if concentrations of these constituents show stable trends,then these analytical suites
<br /> may be reduced to annual sampling with Central Valley Water Board staff concurrence.
<br /> BAfter four consecutive routine quarterly sampling events,if nitrate,chloride,sulfate,or total dissolved solids(TDS)concentrations show stable to decreasing trend:
<br /> then these analytical suites may be reduced to annual sampling with Central Valiey Water Board staff concurrence.
<br /> 9 The treatment system effluent sampling results may be used to satisfy this requirement as all treated water is discharged through injection wells.
<br /> All current and future injection wells may be removed from this Site-wide MRP and added to's revised WDR MRP for the Site's.groundwater remediation_system
<br /> upon concurrence from staff at the Central Valley Water Board.
<br /> New injection wells screened below the corcoran clay will be used to continuously monitor total volume,injection rate,and injection pressure.New injection
<br /> wells screened above the corcoran clay will be used to continuously monitor total volume and injection rate,and injection pressure.
<br /> pH,Temperature and Conductivity shall be measured whenever a sample is submitted for laboratory analysis
<br /> EDB=Ethylene Dibromide
<br /> DBCP=1,2-Dibromo-3-chloropropane
<br /> OC Pesticides=Organochlorine Pesticides
<br /> OP Pesticides=Organophosphorus Pesticides
<br /> Organochlorine Pesticides=Aldrin,Chlordane,DDD,DDE,DDT,Dieldrin,Heptachlor,Toxaphene
<br /> Organophosphorus Pesticides=DEF,Delnav,Dimethoate,Ethyl Parathion,Methly Parathion,Disyston
<br /> BHC Isomers=Benzene Hexachloride(alpha,beta,delta,and gamma isomers)
<br /> Herbicides=2,4-D(Dichlorophenoxyacetic acid)and 2,4,5-T(Trichlorophenoxyacetic acid)
<br /> --=Not Required or Not applicable
<br /> M=monthly sampling frequency
<br /> Q=quarterly sampling frequency
<br /> S=semi-annual sampling frequency
<br /> A=annual sampling frequency
<br /> Page 4 of 4
<br />
|