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MONITORING AND REPORTING PROGRAM ORDER NO. R5-2015-0012 5
<br /> HUMAN SERVICES AGENCY, 145 SOUTH SUTTER STREET, STOCKTON, CA 95202
<br /> IN-SITU REMEDIATION OF PETROLEUM HYDROCARBONS
<br /> SAN JOAQUIN COUNTY
<br /> Constituent Method' Maximum Practical Quantitation
<br /> Limit (pg/L2
<br /> Total Dissolved Solids EPA 160.1 or SM 2540C 10,000
<br /> H meter NA
<br /> Electrical Conductivity meter NA
<br /> Or an equivalent EPA Method that achieves the maximum Practical Quantitation Limit.
<br /> 2 All concentrations between the Method Detection Limit and the Practical Quantitation Limit shall be
<br /> reported as an estimated value.
<br /> 3 General minerals include alkalinity, bicarbonate, potassium, chloride, sulfate, total hardness, nitrate,
<br /> nitrite, and ammonia.
<br /> 4 Metals include arsenic, barium, cadmium, calcium, total chromium, copper, iron, lead, manganese,
<br /> magnesium, mercury, molybdenum, nickel, selenium, and silica.
<br /> ESTABLISHMENT OF BACKGROUND CONCENTRATION VALUES
<br /> The Discharger shall develop background values for concentrations of constituents such as
<br /> dissolved arsenic, dissolved manganese, dissolved iron, total chromium, hexavalent
<br /> chromium, total dissolved solids, electrical conductivity, and pH in groundwater following the
<br /> procedures found in CCR Section 20415(e)(10).
<br /> Baseline groundwater samples will be collected from background (MW-3a and MW-9),
<br /> treatment (MW-2 and MW-10), and compliance zone (MW-6 and MW-7) wells prior to
<br /> injection and analyzed for above constituents. In addition, wells MW-3A and MW-9 will also
<br /> be sampled three, six, and twelve months after injection. Background wells MW-3A and
<br /> MW-9 are located more than 100 feet away from the proposed injection location near MW-2
<br /> and therefore, are not expected to be impacted with injected treatment amendments.
<br /> REPORTING
<br /> When reporting the data, the Discharger shall arrange the information in tabular form so that
<br /> the date, the constituents, and the concentrations are readily discernible. The data shall be
<br /> summarized in such a manner as to clearly illustrate the compliance with this Order. The
<br /> results of any monitoring done more frequently than required at the locations specified in the
<br /> Monitoring and Reporting Program shall also be reported to the Central Valley Water Board.
<br /> As required by the California Business and Professions Code Sections 6735, 7835, and
<br /> 7835.1, all reports shall be prepared by a registered professional Civil Engineer or Geologist
<br /> or their subordinate and signed by the registered professional.
<br /> The Discharger shall submit quarterly electronic data reports, which conform to the
<br /> requirements of the California Code of Regulations, Title 23, Division 3, Chapter 30. The
<br /> quarterly reports shall be submitted electronically over the internet to the Geotracker
<br /> database system by the 1 st day of the second month following the end of each calendar
<br /> quarter by 1 August, 1 November, 1 February, and 1 May until such time as the Executive
<br /> Officer determines that the reports are no longer necessary.
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