|
Q �
<br /> r U
<br /> r
<br /> t
<br /> 3S1UW83d
<br /> ' � 3WNOb1AN�
<br /> Appendix C S N(1P
<br /> Former CURTISS PONTIAC-CADILLAC soot 9 f
<br /> 2450 Toste Road, Tracy, California /003b i
<br /> OZONE INJECTION BENCH'SCALE STUDY ` AA IpA
<br /> In preparation for ground water remediation utilizing ozone injection ythe CVRWQCB policy for
<br /> the investigation,of UST_sites•requires the site determine limits of the detrimental, secondary
<br /> consequences.geerated from in-situ ozone injection.
<br /> Based upon results from several air-sparging and ozone-injection projects with similar geologic
<br /> conditions, it has been AGE'S experience that iron fouling of sparge points has not been a concern
<br /> to the site remediation. However, an Ozone Injection Bench Scale Study is proposed to determine
<br /> whether general ozone injection into the subsurface has the potential to significantly increase the
<br /> concentrations of metals which may secondarily degrade water quality.The main goal of the Bench
<br /> Scale Study .is to assess productior n of hexavalent.chromium (Cr"),and to secondly measure
<br /> concentration increases of the secondary metals and generatparameters,as well as the degradation
<br /> of petroleum hydrocarbons.
<br /> Baseline Analysis 4.1
<br /> For.assessment of baseline conditions done soil=boringtOZ--1,will-be-collected-with-sampling 1.
<br /> MW-1 zintervals occurring--at-the 15 and73_5-f -interval <Gr er.-sam les-will=be=tak n f—o e
<br /> onsite-mo itorin well, hV .1 an W a ;th 3:to:2 and to-T5 oft=interval;,respectively
<br /> L� 5 S This will give a representa ive samp o e su surface soil ground water interface.Soil and ground
<br /> C W.-• water samples will be analyzed by.a California Department of Public Health (CDPH)-certified 1
<br /> laboratory for the.following constituents:
<br /> k
<br /> • Total petroleum hydrocarbons quantified as gasoline (TPH-g) in accordance with EPA
<br /> Method 8015 Modified;
<br /> • `Benzene,toluene,ethyl-benzene and total xylenes(BTEX);the fuel additives methyl tertiary
<br /> butyl ether(MTBE), tertiary butyl alcohol (TBA),di-isopropyl-ether(DIPE), ethyl tertiary '
<br /> butyl ether (ETBE), tertiary amyl methyl ether (TAME), ethylene dibromide (EDB) and
<br /> 1,2-dichloroethane (1,2-DCA) in accordance with EPA Method 8260 Modified; •
<br /> • I
<br /> • Metals including antimony, arsenic, barium, beryllium; cadmium, calcium, chromium,
<br /> cobalt,copper,iron,lead,mercury,magnesium,manganese,molybdenum,nickel,potassium,
<br /> selenium, silver, sodium, thallium, vanadium, and zinc by EPA Method 200.8, and
<br /> hexavalent chromium by EPA Method 218.6/DISTLC/3060A;
<br /> • Standard mineral including chloride, fluoride, nitrate as N, and sulfate by EPA Method i
<br /> 300.1; alkalinity by EPA Method 310.1; and total dissolved solids by EPA Method 160.1;
<br /> i
<br /> • General Minerals(metals;Al,Sb,As,Ba,Be,Ca,Cd,Cr,Co,Cu,Fe,Pb,Mg,Mn,Hg,Mo,
<br /> K, Ni, Ag, Na, Se, Tl, W, V, and Zn) by EPA Method 200.8 and Hexachrome by EPA
<br /> i
<br />
|