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Dissolved Metals:
* No dredged material was placed in Area C
MWDMWC*MWBMWA
MWC: All concentrations were below detection limits exceDt for arsenic,was 0.001 mg/L. -
MWB: All concentrations were below detection limits exce~~ =or arsenic,was 0.010 mg/L; for nickel, which was 0.023 mg/Li aid for z:....~c,whie::
was 0.018 mg/L.
MWD: All concentrations were below detection limits except for arsenic,was 0.001 mg/L.
MWA: All concentrations were below detection··limits except for arsenic,was 0.002 mg/L.
Tem'Cerature (degrees Celcius) 16.116.616.115.4pH
-(pH units) 6.76.55.96.5
Electrical Conductivity(umhos/cm)150025901000690
Total Dissolved Solids829:1390soa376
Chlorides396276259157
Bromides1.302.28:1.000.51
Constituent
COMPLIANCE POINTS {Monitoring Wells: MWA, MWB, MWC, MWD}Background Data (in mg/L except as noted)Sampling Date: 12/20/94
A-20
~PLIANCE POINTS (Monitoring Wells: MWA, MWD, MI~C, MWD)nitoring (in mg/L expept as noted)
,nerals and General Water Parameters Monitoring Period MWA MWI3 MWC* MWD.--------------------------------------------------------------------------------------------------------~------------------
~mperature (degrees Celeius) 12/29/94 - 9/21/9515.0 - 10.114.2 - 21.215.5 - 17.515.5 - 17.2{ (pH units)
12/29/94 - 9/21/956.2 - 6.75.0 - ".15.0 - 6.66.0 - 6.0Leetrical Conductivity (umbos/em)
12/29/94 - 9/21/951,200 - 1,4701,156 - 2,530720 - 900620 ,-934~tal Dissolved Solids
12/29/94 - 8/24/95742 - 825679 - 1,500414 - 484348 - 636hlorides
12/29/94 - 8/24/95337 - 378111 - 268170 - 215129 - 208romides
12/29/94 - 9/21/950.90 - 1.350.97 - 2.300.52 - 0.800.21 - 0.78
--------r-------------·---------------------------------'---------------------------------------------------------------------
No dredged material was placed in Area C
---------------.------------------------------------------------------------.-------------------------------------------------
'rsenic' 12/29/94 -'8/24/95:admium 12/29/94 - 8/24/95:hromium 12/29/94 - 8/24/95:opper 12/29/94 - 9/24/95Lead 12/29/94 - 8/24/95Mercury 12/29/94 - 8/24/95Nickel 12/29/94 - 8/24/95Selenium 12/29/94 - 8/24/95Silver 12/29/94 - 8/24/95Thallium 12/29/94 - 8/24/95Zinc 12/29/94 -'8/24/95
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* No dredged material was placed in Area C
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A-21
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. Electrical Conductivity Measurements in Receiving Water and Monitoring Wells
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A-23
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APPENDIX L
Benefit Assessment of Alternative Long-Term Management Strategiesfor the Disposal of Dredged Materials from San Francisco Bay
Benefit Assessment of Alternative Long-TermManagement Strategies for the Disposal
of Dredged Materials fromSan Francisco Bay
Prepared for:
u.s. Environmental Protection AgencyRegion.9
San Francisco, California
Prepared by:
Jones & Stokes Associates, Inc.Sacramento, California
September 30, 1995
Benefit AS5essment of AJternative Long-TermManagement Strategies for the Disposal
of Dredged Materials fromSan Francisco Bay
Prepared for:
u.s. Environmental Protection AgencyRegion 9
Sediment Management75 Hawthorne Street
San Francisco, CA 94105Contact: Rebecca Tuden
415/744-1987
Prepared by:
Jones & Stokes Associates, Inc.2600 V Street, Suite 100
Sacramento, CA 95818-1914Contact: Thomas Wegge
9161737-3000
September 30, 1995
This document should be cited as:
Jones & Stokes Associates, Inc. 1995. Benefit assessment of alternative long-tenn managementstrategies for the disposal of dredged materials from San Francisco Bay. September 30, 1995.
(JSA 94-316.) Sacramento, CA Prepared for u.S. Environmental Protection Agency, Region9,San Francisco, CA.
Table of Contents
Page
INTRODUCTION 1
~ITATFUESTO~TION 2
Wetland Functions and Outputs 3Wetlands as Factors of Production for Other Goods and Services 3Wetlands as Direct Producers of Consumer or Producer Welfare 5
LTMS Habitat Restoration 5Economic Benefits of Wetlands Restoration 6
Valuation Techniques 6Estimated Value of Restoring Wetlands under the LTMS Program 7
PROMOTING FUEUSE OPPORTUNITIES 9
Levee Rehabilitation 9Landfill Cover and Construction Fill 9Beach Nourishment 10
ESTABLISHING FUEGULATORY CERTAINTY 11
PROTECTING ECOSYSTEM HEALTH 11
COMPARATIVE BENEFIT ASSESSMENT OF LTMS DISPOSAL OPTIONS 13Benefits Common to Both Scenarios 14Low Scenario 14Medium Scenario 15
Summary 15
CITATIONS 16Printed References 16Personal Communications 18