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MONITORI VG AND REPORTING PROGRAM ORDER NO. R5-2008-0149-XXX 4
<br /> STALLWORTH AUTO SALES
<br /> SAN JOAQJIN COUNTY
<br /> 3 Constituent suite components listed in Table 2 below
<br /> ° Well used to monitor compliance and for the presence of breakdown/byproducts of the treatment migrating beyond the expected treatment
<br /> area
<br /> s Wells used to evaluate in-situ bioremediation progress inside the treatment zone,to gauge effectiveness of ISCO injection in reducing the
<br /> dissolved petroleum hydrocarbon concentrations, and to monitor potential changes in groundwater geochemistry that could be attributed
<br /> to the injection of oxidizing agents
<br /> e Well used to evaluate migration of pollutants within the treatment zone.The transition well may or may not be within the zone of influence.
<br /> Well used to monitor the background natural changes in groundwater geochemistry in areas unaffected by oxidant injection.
<br /> 8 To be sampled prior to startup(baseline)and bi-weekly during pilot testing.
<br /> 9 All samplinc conducted following a 3-well volume purge.
<br /> Table 113; Sampling5,5 Frequency (During Periods of No Remediation/Post-
<br /> Remediation)
<br /> Well IDS Frequency Constituent Suites) Monitoring Objective
<br /> MW-1A, \AW-2, MW-
<br /> 6, MW-7 MW-8 and Other 24 Suites A and B NA
<br /> MW-10
<br /> Well IN shown on attached Figure 4
<br /> 2 i.e.,week)
<br /> 3 y, monthly,quarterly, annually, other bi-weeklyi
<br /> Constituent suite components listed in Table 2
<br /> Wells to be monitored for depth to water, presence of free product, and purge sampled weekly for a period of one month following the final
<br /> ISCO injection event to determine if breakdown/byproducts of treatment developed. If results do not indicate any development of
<br /> breakdown/byproducts from treatment, no additional samples will be collected.
<br /> s All sampling conducted following a 3-well volume purge.
<br /> s Should adverse water quality conditions occur due to the injection of oxidants, then those wells showing impacts will be monitored and
<br /> reported bi_.veekly for the injection permit constituents of concern in Suite B as identified during the pilot study until baseline is reached, per
<br /> Finding 3, page 2,paragraph 2 above
<br /> Table 2: Analytical Methods
<br /> Constitue it Method' Maximum Practical z Frequency
<br /> Quantitation Limit (Ng/L)
<br /> Suite A
<br /> TPH-g GC/MS 50
<br /> BTEX, MTBE, TAME, As indicated in
<br /> DIPE, ETBE, TBA, 1,2- EPA 8260B 0.5 -10 Table 1
<br /> DCA, EIB
<br /> Suite B
<br /> Metals, dissolved EPA 200.7/200.8 0.025-500
<br /> Hexaval int Chromium EPA 218.6 0.2 As indicated in
<br /> Anion S4 EPA 300.1 5-1000 Table 1
<br /> Ammonia as N EPA E350.1 100
<br /> TDS EPA SM250C 10
<br /> Or an equivalent EPA Method that achieves the maximum Practical Quantitation Limit.
<br /> Z All concentrations between the Method Detection Limit and the Practical Quantitation Limit shall be reported as an estimated value(J flag).
<br /> 3 Dissolved metal analyses include Al, As, Ba, Be, Ca, Cd, Cr, Co, Cu, Fe, Hg, Mg, Mn, Mo, Ni, Na, Pb. Sb, TI, V, W, and Zn and are
<br /> collected in aboratory-supplied non-preserved container, relinquished to the lab for filtering and preservation prior to analyses.
<br /> 4 Anions incluje bromide. bromate,chloride, nitrate, nitrate as N, nitrite as N,and sulfate
<br />
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