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Former Unocal #6981 5 13 April 2017
<br /> Stockton, San Joaquin County
<br /> Monitoring Specifications
<br /> 1. Monitor and sample all wells installed in conjunction with the Site investigation which have not
<br /> been properly abandoned. As shown in Figure 1, which is attached and made part of this
<br /> Order by reference, two groundwater monitoring wells and eleven remediation wells have not
<br /> been abandoned. Groundwater samples shall be collected and analyzed quarterly using
<br /> standard Environmental Protection Agency (EPA) protocol and methods shown in Table 1,
<br /> below.
<br /> TABLE 1
<br /> Monitoring and Reporting Program No. R5-2017-0813
<br /> FORMER UNOCAL#6981, 4707 PACIFIC AVENUE
<br /> STOCKTON, SAN JOAQUIN COUNTY
<br /> Constituents TPHg TPHd and BTEX Fuel TBALead Halogenated Metals PAHs
<br /> TPHmo Oxygenates Scavengers Solvents
<br /> 8015M or 8020
<br /> EPA Method 82608 8015M or 82608 82608 82608 82608 6010 8270 SIM
<br /> 82608
<br /> Maximum Practical 50 50 0.5 0.5 5 0.5 0.5 Varies Varies
<br /> Quantitation Limit'(Ng/L)
<br /> Sampling Well
<br /> Frequencyz
<br /> All
<br /> Monitoring x x x x x x x x x
<br /> Quarterly Wells
<br /> All
<br /> Remediation x x x x x x x x x
<br /> Wells
<br /> If the maximum practical quantitation limit is exceeded for a non-detectable result,the Responsible Party shall provide an explanation in the report text.
<br /> All concentrations between the Method Detection Limit and the Practical Quantitation Limit shall be reported as trace.
<br /> Z All wells shall be monitored quarterly for free phase petroleum product thickness and water levels,which shall be reported in feet and feet mean sea
<br /> level,respectively,to the nearest 0.01 foot.
<br /> TPHg—total petroleum hydrocarbons as TBA—tertiary butyl alcohol pg/L—micrograms per liter
<br /> gasoline
<br /> TPHd—total petroleum hydrocarbons as Lead Scavengers— Metals—cadmium,chromium(VI and total),lead,nickel,zinc.
<br /> diesel ethylene dichloride,ethylene dibromide
<br /> TPHmo—total petroleum hydrocarbons as Halogenated Solvents— BTEX—benzene,toluene,ethylbenzene,and total xylenes
<br /> motor oil trichloroethylene,tetrachloroethylene
<br /> Fuel Oxygenates—methanol,ethanol, PAHs(polycyclic aromatic hydrocarbons) —naphthalene,acenaphthene,acenaphthylene,anthracene,
<br /> methyl tertiary butyl ether, phenanthrene,fluorene,chrysene,fluoranthene,pyrene,benzo(b)fluoranthene,benzo(a)pyrene,
<br /> tertiary amyl methyl ether,diisopropyl ether, benzo(k)fluoranthene,benzo(a)anthracene,indeno(1,2,3-c,d)pyrene,dibenz(a,h)anthracene,
<br /> ethyl tertiary butyl ether benzo ,h,i er lene.
<br /> Reporting Specifications
<br /> 2. When reporting data, the Responsible Party shall arrange the information in tabular form so
<br /> that the date, constituents, and concentrations are readily discernible and shall summarize
<br /> the data in such a manner as to illustrate clearly the compliance with this Order.
<br /> 3. Quarterly reports are due by the first day of the second month following the close of
<br /> each calendar quarter (i.e. 1 May, 1 August, 1 November, and 1 February). The first
<br /> monitoring report is due 1 August 2017. Quarterly reports are to conform to the requirements
<br /> of the California Code of Regulations, Title 23, Division 3, Chapter 30, and shall be submitted
<br /> electronically over the internet to the State Water Resources Control Board Geotracker
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