|
TABLE 7 � ,,
<br /> COMPARISON OF REMEDIAL ALTERNATIVES
<br /> FORMER CONTIGROUP GRAIN ELEVATOR � rJ
<br /> 1805 Harbor Street .• � '
<br /> ' STOCKTON, CAa
<br /> A5�IESIEN D ENC NDUM DATEDAS PRESENTED IN CAP pATED OCTOBER,2004 BY GEOMATRIX' RC ,2005 Hy F& UFF, INC
<br /> Alternative/ lternative ! c
<br /> Option Alternative 1 Alternative 2 Alternative 3 Alternative 4 Alternative 5 Alternative 6 Alternative 7 A I A2 A3
<br /> Natural Excavation Tank Excavation Excavation Excavation
<br /> Description of Excavation Excavation Removal of
<br /> ' Attenuation Enhanced in-situ Area to 1'Below Complete With Exc n 5'
<br /> 14'-17'tnto
<br /> Free Product Bioremediation Air Watertable and Excavation On-Site Low- i Into Watertable
<br /> Remedial AlternativeFree
<br /> and Sparging and Enhanced Tank AreauarLimited With Off- Temperature Complete With Off- TPH to 500' Laterally to Watertable
<br /> '
<br /> Quarterly Bioventing Bioremediaion& Site Disposal Thermal Site Disposal mg/kg 14 17 MW-3 Laterally out to
<br /> Monitoring Product Removal Desorption Into Watertable MW-3
<br /> Volume of Impacted
<br /> Soil To Be Removed NIA NIA 117 yd 780 yd 5,300 yd3 8,400 yd3 8,400 yd 850 yd 627 yd 961 yd3
<br /> For Disposal
<br /> 1
<br /> ' Volume of t
<br /> Overburden To Be N/A NIA 390 yd3 390 yd3 2,650 yd3 4,200 yd3 4,200 yd3 506 yd3 672 yd3 672 yd3
<br /> Removed
<br /> ' Poor 40%Mass
<br /> Site Specific Good Already
<br /> Moderate to Poor Poor 15% Mass Poor 75% Mass Good Removes Good Removes All Good Removes Good Removes Good Removes
<br /> Removal,Clean r
<br /> Clay Rich Soils Will Removal,Clean Fill Removal,Off-Site All Residual Majoriy of Majority of Majority of
<br /> Effectiveness Occurring at Site Inhibit to Become Impacted Fill to Become Residual Impacts Impacts Residual Impacts
<br /> Impacted Impacted Sal Impacted Soil Impacted Sod
<br /> '
<br /> 6 Months to 6 Months to 6 Months to 1 Year(pending 1 Year(pending 6 Months to 6 Months to 6 Months to
<br /> Implement, approval of access approval of access Implement Implement,Time To Achieve 1 Yr to Implement Implement, Implement, Years Implement,Years
<br /> Relatively Long Relatively Long agreements and agreements and Years to
<br /> WQO's 1 D Years Operation Relatively Long To Relatively Long To to Decades to to Decades to
<br /> Achieve WQO's To Achieve Achieve WQO's permits from permits from Decadgs to Achieve WQO's Achieve WQO's
<br /> WQO's , multiple agencies) multiple agencies) Achieve} QO's
<br /> ' Easily Difficult due to RR Difficult due to RR implementable, Implementable,
<br /> Implementability Implementable Implementable Implementable Implementable Implementable Constraints Constraints Shoringiis Not Implementable Shoring is Not
<br /> Cost Effective Cost Effective
<br /> Cost $140,100 $2,351,500 $246,700 $613,240 $1,837,400 $5,156,300 $3,123,700 $2'4,5x0 to $151,000 to $276,300 to
<br /> $298,600 $183,000 $322,500
<br /> ' Pounds TPH(9.d)To2 18,000 lbs , 33,750 lbs 11,342 lbs 10,188 lbs 11,640 lbs
<br /> Be Removed NIA NIA 2 6,750 lbs TPH�9+d) 45,000 lbs TPHi9+d) 45,flfl0 lbs TPH�y,d)TPH(s+d) TPH(9+d) TPH(11+C1) TPH(g+d) TPH(9+d)
<br /> Cost per Pound of2 2 $34 07/lb $54 441lb $69 42/lb $22 44 Ib to $14 82/lb to $23 7311b to
<br /> TPHIG+oi Removed NIA NIA $36 5511b TPHig+d) TPHS9+d) TPHlg+d1 $114 58/lb TPH(y+d) TPH19+d) $26 32/lb $17 9611b $27 70/Ib
<br /> TPH(�d) TPH(a+d) TPH(g+d)
<br /> Information provided from the original CAP concerning Alternatives 1-7 is derived from the GEOMATRIX document dated October,2004
<br /> 2 An estimate of TPH(9+d)removed was not provided by GEOMATRIX in the October 2004 CAP Therefore,costAb TPH(g+d)could not be presented
<br /> � i I
<br /> I , E
<br /> i 21
<br />
|