MEMORANDUM

April 13, 2001

TO: MEMBERS, PORTCOMMISSION

Hon. KimberlyBrandon, President

Hon. BrianMcWilliams, Vice President

Hon. DeniseMcCarthy

Hon. MichaelHardeman

Hon. Pius Lee

FROM: Douglas F.Wong

Executive Director

SUBJECT:Informational Briefing on the Southern Waterfront Supplemental

EnvironmentalImpact Report

There are a numberof maritime and industrial leases and projects proposed in the Southern

Waterfront areabetween Pier 70 and India Basin, which have been analyzed in the Southern

WaterfrontSupplemental Environmental Impact Report (SEIR). The SEIR analysis

supplementsenvironmental impact information relevant to the Southern Waterfront in the

Final WaterfrontLand Use Plan EIR. On February 15, 2001, the SEIR was certified as

complete and inconformance with the California Environmental Quality Act and CEQA

Guidelines. Thismemorandum provides a summary of its conclusions, and attaches the

SEIR Summary forfurther details.

Prior to any PortCommission actions to approve leases or projects covered by the SEIR, the

Commission mustadopt CEQA findings acknowledging that all environmental impact

information hasbeen reviewed and considered.

The SEIR analyzedthe environmental impacts of the following activities:

· BodeGravel Company/Mission Valley Rock - proposed concrete ready-mix plant at Pier

92

· RMCLonestar – proposed concrete ready-mix plant at Pier 80

· BritishPacific Aggregates/Hanson Aggregates – aggregate bulk imports andconcrete

ready-mix plant

· ISGResources – proposed import, storage and transloading of fly ash in thePier 90

former grain silos

This Print CoversCalendar Item No. 9C

Page 2

· Coach USA– proposed tour bus maintenance and repair facility at Pier 96

· WasteManagement Inc. – proposed construction debris recycling facility at Pier70

· IllinoisRail and Truck Bridge – proposed as a connection between the Port’sNorth and

South MarineTerminals across Islais Creek

· DredgedMaterials Storage Operations – storage and transshipment of Bay mudremoved

during Port maintenancedredging of its terminal berths

· Increasedcargo shipping activity at the North and South Marine Terminals

·Cumulative impacts that could be generated from uses on Port property oradjacent and

nearby areas,including Pier 70 Development Opportunity Site, other industrial uses in

the remaining Pier70 area, and the Pier 90-94 Backlands, Mission Bay, Potrero Power

Plant site.

The SEIR analyzedland use, transportation, air quality, hydrology, hazards, biology, and

growth inducementimpacts of the above combination of uses. In addition, the SEIR

analyzed three usealternatives, the No Project, Reduced-Scale, and Residential Use Future

Scenario.

The SEIR concludedthat the majority of potentially adverse environmental impacts could be

minimized or avoidedby mitigation measures identified in the SEIR and the Waterfront Land

Use Plan FinalEIR. The SEIR concluded that the above-described combination of uses

would result insignificant, unmitigable traffic congestion at specified times at the following

intersections:Mariposa Stree/I-280 southbound on-ramp; Mariposa Street/I-280 northbound

off-ramp;Third/Mariposa Streets; and Evans Avenue/Cesar Chavez Street.

The combination ofuses also would result in total project emissions of criteria air pollutants

on a region-widebasis that would exceed Bay Area Air Quality Management District

thresholds, mainlybecause the thresholds were established to assess individual projects

rather than acombination of uses such as described above. The SEIR concluded that the

combination ofuses alone would not have significant adverse air quality effects. However,

these uses wouldcontribute to potentially significant cumulative air emissions from existing

and possiblefuture sources in the southeast area of the City. The cumulative concentrations

of PM-10 anddiesel particulate cannot be quantified because of the multitude of existing

sources in thearea. Therefore, to be conservative, these emissions are deemed cumulatively

significant,although the uses assumed on Port property would not have a significant effect

with regard tolocal concentrations of PM-10 or diesel particulates.

Submitted by:Diane Oshima

Manager, WaterfrontPlanning