SUMMARY OF THE PROJECT - California State Parks v25.pdfSummary of the Project Site Characterization and Remediation Draft Program EIR Empire Mine State Historic Park California Department

Page 1

Summary of the Project

Site Characterization and Remediation Draft Program EIR Empire Mine State Historic Park California Department of Parks & Recreation August 2009

S-1

Summary v25

SUMMARY OF THE PROJECT PUBLIC NOTICE AND REVIEW California Department of Parks and Recreation (DPR) filed a Notice of Preparation (NOP) for the Site Characterization and Remediation Project (Project) with the Governor’s Office of Planning and Research/State Clearinghouse (OPR/SCH) for the Draft Program Environmental Impact Report (Draft PEIR) (SCH # 2008082066), on August 14, 2008 and distributed it to various local agencies and interested parties. Appendix A, Notice of Preparation Materials, contains a copy of the NOP, the NOP distribution list, and written comments received in response to the NOP. DPR filed this Draft PEIR and associated Notice of Completion (NOC) with the OPR/SCH, which distributed copies to interested state agencies. In compliance with CEQA Guidelines § 15087, DPR distributed a Notice of Availability (NOA) of the Draft PEIR to interested groups, organizations, the general public, and local newspapers and agencies to solicit comments and questions regarding the Project. Pursuant to CEQA Guidelines California Code of Regulations (CCR) §15105(a), the public review period extends for 45 days from the date the NOC is filed with the OPR/SCH. In addition, DPR posted the Draft PEIR and supporting documents on DPR’s website at: http://www.parks.ca.gov/?page_id=981. Hard copies will be available for review at the following locations:

Department of Parks and Recreation One Capitol Mall, Suite 410 Sacramento, CA 95814 Empire Mine State Historic Park Office 10556 East Empire Street Grass Valley CA 95945 Grass Valley Public Library 207 Mill Street Grass Valley, CA 95945

SITE LOCATION The Park is located in Nevada County, California within the foothills of the Sierra Nevada mountain range. It is approximately 50 miles northeast of Sacramento and is adjacent to and southeast of the City of Grass Valley.

Page 2

Summary of the Project

Site Characterization and Remediation Draft Program EIR Empire Mine State Historic Park California Department of Parks & Recreation August 2009

S-2 Summary v25

The Park, consisting of approximately 856 acres, is located at 10791 East Empire Street in Grass Valley, Nevada County, California. East Empire Street traverses the Park in an east-west direction. North of Empire Street, State Route 174 (SR 174) traverses the Park from northwest to southeast and then extends along the eastern boundary of the Park and the Union Hill area. Land uses surrounding the Park include limited commercial, industrial, open space and residential. PROJECT OVERVIEW In 2006, California Department of Toxic Substance Control (DTSC) and the Central Valley Regional Water Quality Control Board (RWQCB) entered into a Joint Cleanup and Abatement Order, Imminent and/or Substantial Endangerment Determination and Partial Consent Order (Joint Order) with the Department of Parks and Recreation (DPR) and Newmont USA Limited (Newmont) to oversee characterization, evaluation, and remediation at Empire Mine State Historic Park (Park). DPR is the present owner of the Park. Newmont is a successor in interest to a former owner and operator of some of the mines located at the Park, including the Empire Mine. New Verde Mines LLC, a subsidiary of Newmont, still retains certain mineral rights underlying the Park. Newmont and DPR (together, the Project Proponents) will be working together throughout the Site Characterization and Remediation Project (Project) term to address the remediation of potentially hazardous substances at the Park. This Draft Program Environmental Impact Report (Draft PEIR) has been prepared for the DPR to evaluate the potential environmental effects of the Project at the Park located in Nevada County, California. DPR is a state agency and will be the lead agency under the California Environmental Quality Act (CEQA), Public Resources Code (PRC) §21000 et seq., and CEQA Guidelines, California Code of Regulations (14 CCR) §15000 et seq. This document has been prepared in accordance with CEQA Guidelines to evaluate the Project’s potential environmental impacts. The Project Proponents and their respective contractors continue to conduct characterization and evaluation studies to determine the nature and extent of constituents of concern (COC) that exist at the Park, and to assess how potential exposure pathways could be reduced or eliminated. This approach facilitates the development of short-term interim actions and permanent remediation measures. A three tiered approach is used for each Remediation Area: (1) Characterization and Evaluation; (2) Interim Actions; and (3) Remediation. Characterization work determines the nature and extent of COC exceeding the Department of Toxic Substance Control (DTSC) and the Regional Water Quality Control Board (RWQCB) standards and/or guidelines. Evaluation work determines the extent to which the identified constituents need to be addressed through implementation of interim actions and/or by the suite of potential remediation measures.

Page 3

Summary of the Project

Site Characterization and Remediation Draft Program EIR Empire Mine State Historic Park California Department of Parks & Recreation August 2009

S-3 Summary v25

Interim actions eliminate or reduce the potential exposure of COC to humans and the environment while permanent remediation options are evaluated and then implemented. Examples of interim actions include, but are not limited to, exclusionary fencing, and implementation of Best Management Practices (BMPs) to ensure that the COC remain isolated from potential exposure pathways. The purpose of remediation is to permanently eliminate or reduce the risk of potential exposure pathways to humans or the environment from COC identified at the Park. To the extent applicable to a Remediation Area, proposed remedial actions would include appropriate signage and could include (but are not limited to) one or a combination of the following:

• In-situ covers, establishment and stabilization. This action would involve establishing a cover (either a vegetative cover or placement of rock or aggregate) in areas exceeding cleanup goals and/or water quality objectives. The remediation area would be graded or contoured to provide a stable landform, establish controlled drainage patterns, and to prepare the surface materials for establishment of a seed bed, as applicable. In addition to possible grading activities, surface materials could be ripped with track dozer equipment or disked and harrowed using conventional agricultural equipment. The surface materials would be assessed to determine any nutrient, substrate, or geochemical amendment requirements that could be necessary for establishing a stable vegetated landform that would protect against water and wind erosion. Amendment application and seeding activities would likely be conducted using conventional broadcast type equipment such as hydroseeders, herd or cyclone seeders, or using conventional drill type agricultural equipment. Vegetative communities would consist of interim sterile or native plant species, as appropriate. Stormwater BMPs would be implemented to protect the revegetated surface(s). In addition, this action could involve the use of retaining walls, cribbing, gabions and/or hill picker baskets to stabilize sloped or over-cut materials.

• Selective removal and/or replacement of surface materials. This action would involve removing some amount of surface material, including sediments from watercourses, in areas exceeding cleanup goals and/or water quality objectives. Depending on site-specific circumstances, soil could be replaced with either on-site material or with clean import material to an elevation consistent with surrounding topography and revegetated with interim and/or long-term native plant species, as appropriate. Depending on the site and proposed activities, grading or contouring of the soils or adjacent surface materials could be required to provide surface stability. Revegetation could include similar activities as described in the In-situ cover remediation option. Remediation actions could include placement of rock or aggregate on the surface instead of revegetation. Installation of retaining walls, cribbing, gabions and/or retaining walls could be included.

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Summary of the Project

Site Characterization and Remediation Draft Program EIR Empire Mine State Historic Park California Department of Parks & Recreation August 2009

S-4 Summary v25

• Complete removal and/or replacement of surface materials. This action would involve complete removal of all surface materials (mine and mill materials, and organic soils) exceeding cleanup goals and/or water quality objectives. The removed material would be managed on-site or at an appropriate off-site facility, depending on the material and its COC characteristics. Grading or contouring of the area could be required and revegetation could include similar activities as described in the In-situ cover remediation option (See above). Stormwater BMPs would be implemented to protect the Remediation Area. Remediation actions could include placement of rock or aggregate on the surface, instead of revegetation. In addition, this action could involve the use of cribbing, gabions, or retaining walls to stabilize sloped or over-cut materials.

• Placement of removed soils or materials within the Park. If characterization and evaluation determines that a material qualifies as either a Group B or Group C waste, and the RWQCB and the DTSC concur, DPR can manage the materials at the Park provided that the Project Proponents comply with the Materials Management Plan and the Site Health and Safety Plan. Management of materials at the Park will meet the specific applicable requirements of California Regional Water Quality Control Board (RWQCB) and Department of Toxics Substance Control (DTSC). Management of materials at the Park could include construction and/or closure of on-site Mining Units, as defined in Section 2.3.3.1, Department of Toxics Substance Control and Regional Water Quality Control Board, above.

• Placement of cover over selected areas. This action would involve covering selected areas consisting of mine and mill materials with the placement of rock or aggregate material, a clean fill cover, or an engineered low permeability cover containing an infiltration barrier. Installation activities could require grading or contouring of the area with either tracked or rubber-tired dozer equipment or tracked excavation equipment and rubber-tired hauling equipment. The clean fill cover could be stabilized by revegetating with interim and/or long-term native plant species, as appropriate. Stormwater BMPs would be implemented to protect the Remediation Area. In addition, this action could involve the use of cribbing, gabions, or retaining walls to stabilize sloped or over-cut materials.

• Maintenance and enhancement of existing cover. This action would involve maintaining and enhancing existing vegetative cover and/or duff (organic matter in various stages of decomposition on the floor of the forest) in areas where characterization, evaluation or implementation of institutional and/or engineered control sufficiently limits exposure to COC and associated unacceptable health risk.

• Use of engineered controls to prevent access. This action would involve the installation of exclusionary fences and/or boardwalks to control unauthorized access to certain areas potentially containing COC. In conjunction with use of other engineered controls, appropriate viewing areas (including overlooks) would be installed, as necessary. This action could also be utilized as an interim action.

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Summary of the Project

Site Characterization and Remediation Draft Program EIR Empire Mine State Historic Park California Department of Parks & Recreation August 2009

S-5 Summary v25

• Use of Institutional controls. This action would include using non-physical administrative or legal controls to limit the human exposure to COC. Examples of this could include but are not limited to: Use Restrictions and Covenants and Superintendent Orders (an authoritative mandate, command, or direction issued by a senior administrator, or Superintendent, under the authority of California State Parks).

• Stormwater collection and diversion structures. This action would include the engineering and construction of stormwater collection and diversion structures to minimize or eliminate stormwater contact with source materials or to divert and collect stormwater that has contacted source materials. Engineered collection and diversion structures would be designed to manage specified duration and flow conditions and would generally be constructed of clean imported rip-rap (e.g., cobble or larger size rock) materials, geotextile materials, imported clean soil materials, cement grout, concrete, conventional culvert-type installations. Additional stormwater diversion facilities could include but not be limited to engineered creek and/or water diversions (e.g., use of pumping devices), or construction of structures (e.g., roofs) that prevent direct precipitation on Remediation Areas. Stormwater BMPs would be implemented to control erosion and sedimentation, as applicable.

• Implement active treatment measures. This action would include measures such as construction of an active water treatment facility that would use chemical reagents or mechanical treatment processes to convey, oxidize and precipitate targeted metals from water within the facility and then discharge the treated water downstream of the facility in compliance with cleanup goals and/or water quality objectives.

• Implement passive treatment measures. This action would include measures such as construction or enhancement of a natural or constructed wetland, swale, or other passive water treatment systems that utilize passive oxidation and reduction reactions, soils attenuation, and/or wetland vegetation to remove targeted constituents from water and then discharge the treated water downstream in compliance with cleanup goals and/or water quality objectives.

• Other water management measures. This action would include measures such as pumping water from the Empire Mine irrigation wells to reduce effluent water quantities requiring treatment or management and installation of zeolite cells to remove zinc from surface water runoff from the mine yard to reduce metals concentrations and/or moderate the discharge rate of the mine effluent that could be treated at the treatment facility.

• Remediation of structures. This action would involve the replacement or coating of metal roofing, and cleaning of structure interiors to ensure that applicable cleanup goals are achieved.

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Summary of the Project

Site Characterization and Remediation Draft Program EIR Empire Mine State Historic Park California Department of Parks & Recreation August 2009

S-6 Summary v25

NEEDS AND OBJECTIVES DPR’s mission is to provide for the health, inspiration, and education of the people of California by helping to preserve the state’s extraordinary biological diversity, protecting its most valued natural and cultural resources, and creating opportunities for high-quality recreation. The fundamental goal of a historic park, like Empire Mine, is the preservation of resources of historic and prehistoric value. The interpretation and presentation of these resources should help the visitor appreciate, understand, and enjoy learning about the aspect of California’s heritage for which the Park was established. The use and management of resources at the Park will emphasize the historic and natural values subordinating the recreational potential where historic integrity may be violated. The intent of the Project is to:

• Provide for the inspiration and education of the people of California by helping to preserve the state’s extraordinary biological diversity and creating opportunities for high-quality outdoor recreation;

• Protect and preserve valuable natural and cultural resources within the Park; • Protect public health and the environment through minimizing exposure of Park

users and DPR personnel to unacceptable health risks; and • Comply with the intent and terms of the DTSC and RWQCB Joint Order.

The DTSC seeks to provide the highest level of safety, and to protect public health and the environment from toxic harm. DTSC issued an Order to Post to DPR for portions of the Park on July 27, 1989, based on elevated concentrations of lead, arsenic, and mercury in soils or other materials sampled in the vicinity of the Cyanide Plant and the Sand Dam. The RWQCB regulates discharges to surface water at the Park including both stormwater and point source water releases. In the non-stormwater context, on June 23, 2006, the RWQCB issued DPR Waste Discharge Requirements (Order No. R5-2006-0058) and an NPDES (No. CA0085171) to regulate the discharge from the Magenta Drain. The Joint Order initially identified four (4) Priority Action Work Plans for characterization and investigation: Exclusions, Trails, Red Dirt Pile, and Residences as well as requiring a Magenta Drain Sampling and Monitoring Program. DTSC amended the Joint Order in July of 2007 to include additional Work Plans, Activities, and Monitoring Programs with anticipated schedules.

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Summary of the Project

Site Characterization and Remediation Draft Program EIR Empire Mine State Historic Park California Department of Parks & Recreation August 2009

S-7 Summary v25

Issues Evaluated The scope of issues evaluated in this Draft PEIR was determined through: an NOP, distributed to the OPH/SCH, responsible agencies, interested groups and individuals, and surrounding property owners. Issues raised for evaluation include the topics of aesthetics, air quality, biological resources, cultural resources, geology and soils, hazards and hazardous materials, hydrology and water quality, land use and planning, noise, public services, and transportation. EIR SUMMARY As required by CEQA, this Draft PEIR focuses on expected significant or potentially significant environmental effects (14 CCR § 15143). The NOP identified environmental resources that could be potentially affected. The Draft PEIR evaluates each potential impact to the environmental resources, identifies significance relative to established standards, and determines appropriate mitigation, as necessary, to avoid impacts or reduce them to less than significant levels. This document includes detailed evaluations for those environmental issues identified for study. Effects Found Not to be Significant The following resource categories were found to have no potential for adverse impact or the potential for environmental impact was less than significant with no Project Requirements:

• Land Use, Agriculture, and Minerals (Section 4.8); and

• Public Services and Recreation (Section 4.10). Effects Found to be Less Than Significant

Some of the impacts analyzed in this Draft PEIR are considered to be less than significant and require no mitigation. Other impacts, (i.e., those that are considered to be potentially significant) can be reduced to a less than significant level with the implementation of Project Requirements and proposed mitigation measures. All of the impacts analyzed in this Draft PEIR, including those considered to be less than significant, are summarized in Table S-1, Summary of Project Requirements, Mitigation Measures and Significance Determinations for Each Identified Impact Statement.

Page 8

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-3:

• Th

e P

roje

ct P

ropo

nent

s w

ill po

st

info

rmat

ion

sign

s ne

ar R

emed

iatio

n Ar

eas

with

rest

ricte

d ac

cess

or c

losu

res

resu

lting

from

Pro

gram

Act

ions

last

ing

long

er th

an 3

mon

ths.

The

sig

ns w

ill

incl

ude

the

follo

win

g in

form

atio

n:

• E

xpla

natio

n fo

r and

des

crip

tion

of th

e P

rogr

am A

ctio

n; a

nd

• Le

ngth

of P

rogr

am A

ctio

n or

an

ticip

ated

com

plet

ion

date

. A

ES-4

: •

Any

new

stru

ctur

es w

ill be

com

patib

le

with

the

mat

eria

ls, c

olor

and

des

ign

of

exis

ting

stru

ctur

es a

t the

Par

k.

AES

-5:

• To

redu

ce d

irect

and

refle

cted

ligh

t po

llutio

n, th

e P

roje

ct P

ropo

nent

s w

ill

equi

p an

y pe

rman

ent s

truct

ure

with

ou

tdoo

r lig

ht s

hiel

ds th

at c

once

ntra

te th

e illu

min

atio

n do

wnw

ard.

The

dire

ct

sour

ce o

f the

ligh

ting

(bul

b, le

ns,

filam

ent,

tube

, etc

) will

not b

e vi

sibl

e of

f si

te a

nd th

e lig

htin

g w

ill b

e in

stal

led

as

low

as

poss

ible

on

pole

s an

d/or

st

ruct

ures

to m

inim

ize

light

pol

lutio

n of

th

e ni

ght s

ky.

The

cand

le p

ower

of t

he

illum

inat

ion

at g

roun

d le

vel w

ill no

t ex

ceed

wha

t is

requ

ired

by a

ny s

afet

y or

se

curit

y re

gula

tions

of a

ny g

over

nmen

t

Page 11

Sum

mar

y of

the

Proj

ect

Site

Cha

ract

eriz

atio

n an

d R

emed

iatio

n D

raft

Pro

gram

EIR

Em

pire

Min

e S

tate

His

toric

Par

k C

alifo

rnia

Dep

artm

ent o

f Par

ks &

Rec

reat

ion

Aug

ust 2

009

S-1

1 S

umm

ary

v25

Impa

cts

Proj

ect R

equi

rem

ents

Leve

l of

Sign

ifica

nce

Bef

ore

Miti

gatio

n M

itiga

tion

Mea

sure

s

Leve

l of

Sign

ifica

nce

Afte

r M

itiga

tion

agen

cy w

ith re

gula

tory

ove

rsig

ht.

BIO

-7:

• P

rior t

o im

plem

enta

tion

of P

rogr

am

Act

ions

, the

Pro

ject

Pro

pone

nts

will

de

term

ine

and

use

the

min

imum

are

a ne

cess

ary

for P

rogr

am A

ctio

ns, i

nclu

ding

st

agin

g an

d ac

cess

, and

pla

ce o

rang

e co

nstru

ctio

n fe

ncin

g or

flag

ging

aro

und

the

boun

darie

s of

the

prop

osed

wor

k ar

ea.

Exi

stin

g di

stur

bed

area

s w

ill b

e us

ed to

the

exte

nt p

ossi

ble.

Unl

ess

prio

r ap

prov

al is

obt

aine

d fro

m D

PR

, re

med

iatio

n ac

tions

will

rem

ain

with

in th

e de

sign

ated

wor

k ar

ea(s

).to

min

imiz

e ha

bita

t dis

turb

ance

.

Whi

le B

io-7

focu

ses

on re

vege

tatio

n im

plem

enta

tion

of th

is m

easu

re w

ould

re

duce

aes

thet

ic im

pact

s as

soci

ated

with

gr

ound

-dis

turb

ing

activ

ities

. N

OIS

E-1:

•

Pro

ject

Act

ions

will

be li

mite

d to

the

dayl

ight

hou

rs, M

onda

y th

roug

h Fr

iday

. H

owev

er, w

eeke

nd w

ork

coul

d be

im

plem

ente

d to

acc

eler

ate

cons

truct

ion

or a

ddre

ss e

mer

genc

y or

unf

ores

een

circ

umst

ance

s. I

f wee

kend

wor

k is

ne

cess

ary,

no

wor

k w

ill oc

cur o

n th

ose

days

bef

ore

8:00

a.m

. or a

fter 6

:00

p.m

. Th

e re

leva

nt p

art o

f thi

s P

roje

ct

Req

uire

men

t will

ensu

re n

o ni

ghtti

me

Page 12

Sum

mar

y of

the

Proj

ect

Site

Cha

ract

eriz

atio

n an

d R

emed

iatio

n D

raft

Pro

gram

EIR

Em

pire

Min

e S

tate

His

toric

Par

k C

alifo

rnia

Dep

artm

ent o

f Par

ks &

Rec

reat

ion

Aug

ust 2

009

S-1

2 S

umm

ary

v25

Impa

cts

Proj

ect R

equi

rem

ents

Leve

l of

Sign

ifica

nce

Bef

ore

Miti

gatio

n M

itiga

tion

Mea

sure

s

Leve

l of

Sign

ifica

nce

Afte

r M

itiga

tion

light

ing.

A

IR Q

UA

LITY

Im

pact

4.2

-1:

Prog

ram

A

ctio

ns C

ould

Gen

erat

e C

riter

ia P

ollu

tant

Em

issi

ons

at th

e Pa

rk

Pro

ject

Act

ion-

rela

ted

dust

em

issi

ons

wou

ld v

ary

from

day

to

day

, dep

endi

ng o

n th

e le

vel

and

type

of a

ctiv

ity, s

ilt c

onte

nt

of th

e so

il, a

nd th

e w

eath

er.

Emis

sion

s of

PM

10 c

ould

po

tent

ially

affe

ct lo

cal v

isib

ility

and

conc

entra

tions

in th

e ai

r co

uld

be a

dver

sely

affe

cted

; ho

wev

er, o

nly

on a

tem

pora

ry

and

inte

rmitt

ent b

asis

dur

ing

thes

e ac

tiviti

es.

Com

bust

ion

emis

sion

s fro

m

heav

y eq

uipm

ent a

nd

cons

truct

ion

wor

ker c

omm

ute

trips

wou

ld a

lso

vary

from

day

to

day

, and

cou

ld c

ontri

bute

in

crem

enta

lly to

regi

onal

ozo

ne

conc

entra

tions

dur

ing

the

impl

emen

tatio

n of

Pro

ject

A

ctio

ns.

Fugi

tive

dust

wou

ld o

ccur

bot

h du

ring

impl

emen

tatio

n of

P

roje

ct A

ctio

ns a

nd a

s a

resu

lt

AIR

-1:

• D

urin

g dr

y, d

usty

con

ditio

ns, a

ll ac

tive

cons

truct

ion

area

s w

ill be

ligh

tly s

pray

ed

with

dus

t sup

pres

sant

to re

duce

dus

t w

ithou

t cau

sing

runo

ff.

• A

ll tru

cks

or li

ght e

quip

men

t hau

ling

soil,

sa

nd, o

r oth

er lo

ose

mat

eria

ls o

n pu

blic

ro

ads

will

be c

over

ed o

r req

uire

d to

m

aint

ain

at le

ast t

wo

feet

of f

reeb

oard

. •

All

gaso

line-

pow

ered

equ

ipm

ent w

ill be

m

aint

aine

d ac

cord

ing

to m

anuf

actu

rer's

sp

ecifi

catio

ns, a

nd in

com

plia

nce

with

all

stat

e an

d fe

dera

l req

uire

men

ts.

• P

aved

stre

ets

adja

cent

to th

e P

ark

shal

l ei

ther

be

swep

t or w

ashe

d at

the

end

of

each

day

, or a

s re

quire

d, to

rem

ove

exce

ssiv

e ac

cum

ulat

ions

of s

ilt a

nd/o

r m

ud w

hich

cou

ld h

ave

resu

lted

from

re

med

iatio

n co

nstru

ctio

n ac

tiviti

es.

•

Exc

avat

ion

and

grad

ing

activ

ities

will

be

susp

ende

d w

hen

sust

aine

d w

inds

ex

ceed

15

mile

s pe

r hou

r (m

ph),

inst

anta

neou

s gu

sts

exce

ed 2

5 m

ph, o

r w

hen

dust

occ

urs

from

rem

edia

tion

rela

ted

activ

ities

whe

re v

isib

le e

mis

sion

s (d

ust)

cann

ot b

e co

ntro

lled

by w

ater

ing

or c

onve

ntio

nal d

ust a

bate

men

t con

trols

.

Less

Tha

n S

igni

fican

t N

one

Req

uire

d Le

ss T

han

Sig

nific

ant

Page 13

Sum

mar

y of

the

Proj

ect

Site

Cha

ract

eriz

atio

n an

d R

emed

iatio

n D

raft

Pro

gram

EIR

Em

pire

Min

e S

tate

His

toric

Par

k C

alifo

rnia

Dep

artm

ent o

f Par

ks &

Rec

reat

ion

Aug

ust 2

009

S-1

3 S

umm

ary

v25

Impa

cts

Proj

ect R

equi

rem

ents

Leve

l of

Sign

ifica

nce

Bef

ore

Miti

gatio

n M

itiga

tion

Mea

sure

s

Leve

l of

Sign

ifica

nce

Afte

r M

itiga

tion

of w

ind

eros

ion

over

exp

osed

ea

rth s

urfa

ces.

Cle

arin

g an

d ea

rthm

ovin

g ac

tiviti

es

gene

rally

com

pris

e th

e m

ajor

so

urce

of c

onst

ruct

ion

dust

em

issi

ons;

how

ever

, tra

ffic

and

gene

ral d

istu

rban

ce o

f the

soi

l al

so g

ener

ate

dust

em

issi

ons.

Im

pact

4.2

-2:

Pro

gram

A

ctio

ns W

ould

Gen

erat

e TA

C E

mis

sion

s an

d In

crea

se

Expo

sure

to T

AC

Em

issi

ons

at N

earb

y R

ecep

tors

TA

C e

mis

sion

sou

rces

are

D

iese

l Par

ticul

ate

Mat

ter

(DP

M) f

rom

mob

ile e

quip

men

t ex

haus

t and

Con

stitu

ents

of

Con

cern

(CO

C) m

etal

s pr

esen

t in

ons

ite s

oils

that

cou

ld

beco

me

airb

orne

fugi

tive

dust

an

d ex

pose

nea

rby

rece

ptor

s.

AIR

-1:

• D

urin

g dr

y, d

usty

con

ditio

ns, a

ll ac

tive

cons

truct

ion

area

s w

ill be

ligh

tly s

pray

ed

with

dus

t sup

pres

sant

to re

duce

dus

t w

ithou

t cau

sing

runo

ff.

• A

ll tru

cks

or li

ght e

quip

men

t hau

ling

soil,

sa

nd, o

r oth

er lo

ose

mat

eria

ls o

n pu

blic

ro

ads

will

be c

over

ed o

r req

uire

d to

m

aint

ain

at le

ast t

wo

feet

of f

reeb

oard

. •

All

gaso

line-

pow

ered

equ

ipm

ent w

ill be

m

aint

aine

d ac

cord

ing

to m

anuf

actu

rer's

sp

ecifi

catio

ns, a

nd in

com

plia

nce

with

all

stat

e an

d fe

dera

l req

uire

men

ts.

• P

aved

stre

ets

adja

cent

to th

e P

ark

shal

l ei

ther

be

swep

t or w

ashe

d at

the

end

of

each

day

, or a

s re

quire

d, to

rem

ove

exce

ssiv

e ac

cum

ulat

ions

of s

ilt a

nd/o

r m

ud w

hich

cou

ld h

ave

resu

lted

from

re

med

iatio

n co

nstru

ctio

n ac

tiviti

es.

•

Exc

avat

ion

and

grad

ing

activ

ities

will

be

susp

ende

d w

hen

sust

aine

d w

inds

ex

ceed

15

mile

s pe

r hou

r (m

ph),

inst

anta

neou

s gu

sts

exce

ed 2

5 m

ph, o

r

Pot

entia

lly

Sig

nific

ant

Miti

gatio

n M

easu

re 4

.2-1

(a)

(Add

ition

al D

ust

Supp

ress

ion

Mea

sure

s):

Fo

r Pro

ject

Act

ions

with

in

Rem

edia

tion

Are

as c

lass

ified

as

Lev

el 2

(max

imum

ars

enic

co

ncen

tratio

ns le

ss th

an o

r eq

ual t

o 3,

500

mg/

kg, b

ut

grea

ter t

han

363

mg/

kg) t

he

Pro

ject

Pro

pone

nts

will

im

plem

ent t

he fo

llow

ing:

• A

ll ac

tive

cons

truct

ion

area

s w

ill be

wat

ered

whe

neve

r m

ater

ial b

eing

dis

turb

ed is

no

t moi

st.

This

incl

udes

ar

eas

subj

ect t

o ve

hicl

e tra

vel;

mat

eria

l to

be

exca

vate

d, d

ozed

, scr

aped

, et

c.; a

nd m

ater

ial b

eing

ha

uled

if it

is n

ot o

ther

wis

e co

vere

d.

Less

Tha

n S

igni

fican

t

Page 14

Sum

mar

y of

the

Proj

ect

Site

Cha

ract

eriz

atio

n an

d R

emed

iatio

n D

raft

Pro

gram

EIR

Em

pire

Min

e S

tate

His

toric

Par

k C

alifo

rnia

Dep

artm

ent o

f Par

ks &

Rec

reat

ion

Aug

ust 2

009

S-1

4 S

umm

ary

v25

Impa

cts

Proj

ect R

equi

rem

ents

Leve

l of

Sign

ifica

nce

Bef

ore

Miti

gatio

n M

itiga

tion

Mea

sure

s

Leve

l of

Sign

ifica

nce

Afte

r M

itiga

tion

whe

n du

st o

ccur

s fro

m re

med

iatio

n re

late

d ac

tiviti

es w

here

vis

ible

em

issi

ons

(dus

t) ca

nnot

be

cont

rolle

d by

wat

erin

g or

con

vent

iona

l dus

t aba

tem

ent c

ontro

ls.

• E

nclo

se, c

over

, wat

er to

m

aint

ain

moi

st c

ondi

tions

, or

appl

y (n

on-to

xic)

soi

l bin

ders

to

exp

osed

sto

ckpi

les

cont

aini

ng m

ater

ials

with

ar

seni

c co

ncen

tratio

ns w

ithin

th

e Le

vel 2

cla

ssifi

catio

n ra

nge.

• H

ydro

seed

or a

pply

(non

-to

xic)

soi

l sta

biliz

ers

to

inac

tive

cons

truct

ion

area

s (p

revi

ousl

y gr

aded

are

as

inac

tive

for 5

day

s or

mor

e).

• Li

mit

the

area

sub

ject

to

exca

vatio

n, g

radi

ng a

nd

othe

r con

stru

ctio

n ac

tivity

at

any

one

time

to a

s sm

all a

s pr

actic

ally

pos

sibl

e, b

ut n

ot

to e

xcee

d 2.

5 ac

res

per d

ay

Miti

gatio

n M

easu

re 4

.2-1

(b)

(Rem

edia

tion

and

Miti

gatio

n Pl

an):

If

area

-spe

cific

ch

arac

teriz

atio

n in

dica

tes

that

a

Rem

edia

tion

Are

a is

cl

assi

fied

as L

evel

3

(max

imum

ars

enic

co

ncen

tratio

ns g

reat

er th

an

3,50

0 m

g/kg

), th

e P

roje

ct

Page 15

Sum

mar

y of

the

Proj

ect

Site

Cha

ract

eriz

atio

n an

d R

emed

iatio

n D

raft

Pro

gram

EIR

Em

pire

Min

e S

tate

His

toric

Par

k C

alifo

rnia

Dep

artm

ent o

f Par

ks &

Rec

reat

ion

Aug

ust 2

009

S-1

5 S

umm

ary

v25

Impa

cts

Proj

ect R

equi

rem

ents

Leve

l of

Sign

ifica

nce

Bef

ore

Miti

gatio

n M

itiga

tion

Mea

sure

s

Leve

l of

Sign

ifica

nce

Afte

r M

itiga

tion

Pro

pone

nts

will

dev

elop

a

Rem

edia

tion

and

Miti

gatio

n P

lan

that

dem

onst

rate

s th

at

acut

e ar

seni

c he

alth

impa

cts

have

an

Haz

ard

Inde

x le

ss

than

1.0

, and

are

ther

efor

e le

ss th

an s

igni

fican

t. T

his

Pla

n w

ill li

kely

requ

ire

sele

ctio

n of

a re

med

iatio

n op

tion

that

redu

ces

pote

ntia

l ex

posu

re to

una

ccep

tabl

e he

alth

risk

s as

soci

ated

with

ar

seni

c (e

.g.,

Pla

cem

ent o

f co

ver o

ver s

elec

ted

area

s).

Im

pact

4.2

-3:

Prog

ram

A

ctio

ns W

ould

Gen

erat

e Lo

caliz

ed C

O E

mis

sion

s at

In

ters

ectio

ns a

nd R

oadw

ays

in th

e Pr

ojec

t Vic

inity

Due

to

Offs

ite W

orke

r and

Hau

l Tr

uck

Emis

sion

s In

crea

sed

traffi

c le

vels

ge

nera

ted

by th

e P

roje

ct h

ave

the

pote

ntia

l to

affe

ct c

arbo

n m

onox

ide

conc

entra

tions

alo

ng

surfa

ce s

treet

s in

the

Pro

ject

ar

ea d

ue to

com

mut

ing

by

Pro

ject

wor

kers

, and

hau

l tru

cks

brin

ging

equ

ipm

ent a

nd

mat

eria

l to

and

from

the

Par

k.

TRA

FFIC

-3: T

raffi

c Im

pact

Stu

dy

• P

rior

to t

he s

tart

of a

ny P

roje

ct A

ctio

n th

at w

ould

res

ult

in 5

0 or

mor

e ve

hicl

e tri

ps d

urin

g pe

ak h

ours

(7:

00 a

.m.

to

9:00

a.m

. or

4:00

p.m

. to

6:00

p.m

.) fo

r a

perio

d ex

ceed

ing

6 m

onth

s in

du

ratio

n,

the

Pro

ject

P

ropo

nent

s w

ill pr

epar

e a

Traf

fic Im

pact

Stu

dy (

TIS

) fo

r su

bmitt

al

and

appr

oval

by

N

evad

a C

ount

y D

epar

tmen

t of

Tr

ansp

orta

tion

and

San

itatio

n (D

OTS

) an

d/or

City

of

Gra

ss V

alle

y P

ublic

Wor

ks.

The

TIS

w

ill in

clud

e, b

ut w

ill no

t be

limite

d to

: –

Des

crip

tion

of

traffi

c in

duci

ng

Proj

ect A

ctio

ns;

– Ty

pes

of v

ehic

les

antic

ipat

ed;

– A

ppro

xim

ate

traffi

c vo

lum

es

on/

offs

ite a

nd ro

adw

ays

to b

e us

ed;

Less

Tha

n S

igni

fican

t N

one

Req

uire

d Le

ss T

han

Sig

nific

ant

Page 16

Sum

mar

y of

the

Proj

ect

Site

Cha

ract

eriz

atio

n an

d R

emed

iatio

n D

raft

Pro

gram

EIR

Em

pire

Min

e S

tate

His

toric

Par

k C

alifo

rnia

Dep

artm

ent o

f Par

ks &

Rec

reat

ion

Aug

ust 2

009

S-1

6 S

umm

ary

v25

Impa

cts

Proj

ect R

equi

rem

ents

Leve

l of

Sign

ifica

nce

Bef

ore

Miti

gatio

n M

itiga

tion

Mea

sure

s

Leve

l of

Sign

ifica

nce

Afte

r M

itiga

tion

– E

xist

ing

Con

ditio

ns T

raffi

c C

ount

s;

– A

naly

sis

of

Pro

ject

A

ctio

n tra

ffic

volu

me

impa

cts

on

inte

rsec

tions

an

d tra

ffic

inde

x; a

nd

Any

oth

er T

IS re

quire

men

ts a

s ou

tline

d in

the

appr

opria

te ju

risdi

ctio

n’s

guid

ance

on

TIS

pre

para

tion.

Im

plem

enta

tion

of S

peci

fic P

roje

ct

Req

uire

men

t Tra

ffic-

3 w

ould

ens

ure

that

th

ere

wou

ld b

e no

sig

nific

ant c

arbo

n m

onox

ide

impa

cts

at o

ff-si

te

inte

rsec

tions

. Im

pact

4.2

-4:

Prog

ram

A

ctio

ns C

ould

Lea

d to

In

crea

ses

in O

dor E

mis

sion

s Th

e pr

opos

ed w

ork

wou

ld n

ot

resu

lt in

the

long

-term

ge

nera

tion

of o

dors

; how

ever

, P

rogr

am A

ctio

ns-re

late

d em

issi

ons

coul

d re

sult

in a

sh

ort-t

erm

gen

erat

ion

of o

dors

, in

clud

ing

dies

el e

xhau

st a

nd

fuel

or s

olve

nt v

apor

s. S

ome

rece

ptor

s co

uld

cons

ider

thes

e od

ors

obje

ctio

nabl

e. H

owev

er,

Pro

gram

Act

ions

wou

ld b

e sh

ort-t

erm

and

odo

rous

em

issi

ons

wou

ld b

e lim

ited

and

diss

ipat

e ra

pidl

y in

the

air w

ith

incr

ease

d di

stan

ce fr

om th

e so

urce

.

N/A

Le

ss T

han

Sig

nific

ant

Non

e R

equi

red

Less

Tha

n S

igni

fican

t

Page 17

Sum

mar

y of

the

Proj

ect

Site

Cha

ract

eriz

atio

n an

d R

emed

iatio

n D

raft

Pro

gram

EIR

Em

pire

Min

e S

tate

His

toric

Par

k C

alifo

rnia

Dep

artm

ent o

f Par

ks &

Rec

reat

ion

Aug

ust 2

009

S-1

7 S

umm

ary

v25

Impa

cts

Proj

ect R

equi

rem

ents

Leve

l of

Sign

ifica

nce

Bef

ore

Miti

gatio

n M

itiga

tion

Mea

sure

s

Leve

l of

Sign

ifica

nce

Afte

r M

itiga

tion

Impa

ct 4

.2-5

: Pr

ogra

m

Act

ions

Cou

ld C

onfli

ct w

ith

Impl

emen

tatio

n of

Sta

te

Goa

ls fo

r Red

ucin

g G

reen

hous

e G

as (G

HG

) Em

issi

ons

and

ther

eby

have

an

Adv

erse

Effe

ct o

n G

loba

l C

limat

e C

hang

e Th

e P

roje

ct d

oes

not p

ose

any

appa

rent

con

flict

with

the

mos

t re

cent

list

of t

he C

alifo

rnia

Air

Res

ourc

es B

oard

(AR

B) e

arly

ac

tion

stra

tegi

es.

In a

dditi

on,

the

Pro

ject

is p

redi

cted

to

gene

rate

app

roxi

mat

ely

5.52

m

etric

tons

of C

O2 p

er d

ay a

nd

an e

stim

ated

yea

rly a

mou

nt o

f 69

0 m

etric

tons

of C

O2 w

hich

is

con

side

rabl

y le

ss th

an th

e in

terim

thre

shol

d of

7,0

00

met

ric to

ns o

f CO

2 per

yea

r as

esta

blis

hed

by A

RB

.

N/A

Le

ss T

han

Sig

nific

ant

Non

e R

equi

red

Less

Tha

n S

igni

fican

t

Page 18

Sum

mar

y of

the

Proj

ect

Site

Cha

ract

eriz

atio

n an

d R

emed

iatio

n D

raft

Pro

gram

EIR

Em

pire

Min

e S

tate

His

toric

Par

k C

alifo

rnia

Dep

artm

ent o

f Par

ks &

Rec

reat

ion

Aug

ust 2

009

S-1

8 S

umm

ary

v25

Impa

cts

Proj

ect R

equi

rem

ents

Leve

l of

Sign

ifica

nce

Bef

ore

Miti

gatio

n M

itiga

tion

Mea

sure

s

Leve

l of

Sign

ifica

nce

Afte

r M

itiga

tion

BIO

LOG

Y Im

pact

4.3

-1:

Prog

ram

A

ctio

ns a

t the

Par

k C

ould

H

ave

a Su

bsta

ntia

l Adv

erse

Ef

fect

, Eith

er D

irect

ly o

r Th

roug

h H

abita

t M

odifi

catio

n, o

n Sp

ecie

s Id

entif

ied

as S

ensi

tive,

C

andi

date

, or S

peci

al-S

tatu

s Sp

ecie

s in

Loc

al o

r Reg

iona

l Pl

ans,

Pol

icie

s, o

r R

egul

atio

ns, o

r by

the

CD

FG

or th

e U

SFW

S

See

sub

-impa

ct s

tate

men

ts

Impa

ct 4

.3-1

(A) –

Pr

ogra

m A

ctio

ns a

t the

Pa

rk C

ould

Hav

e a

Subs

tant

ial A

dver

se

Effe

ct, E

ither

Dire

ctly

or

Thro

ugh

Hab

itat

Mod

ifica

tion,

on

Cal

iforn

ia R

ed-L

egge

d Fr

og (C

RLF

) C

RLF

wer

e no

t obs

erve

d in

the

Par

k du

ring

prot

ocol

-le

vel s

urve

ys, a

nd th

e pr

obab

ility

that

this

spe

cies

oc

curs

at t

he P

ark

is lo

w.

H

owev

er, i

f CR

LF a

re

pres

ent i

n th

e ar

ea a

t the

tim

e of

con

stru

ctio

n, th

en

Pro

ject

Act

ions

cou

ld

resu

lt in

the

crus

hing

of

BIO

-3:

• P

rior t

o re

med

iatio

n, a

bio

logi

st th

at is

ap

prov

ed b

y th

e U

SFW

S (U

SFW

S-ap

prov

ed b

iolo

gist

) to

wor

k w

ith

Cal

iforn

ia R

ed-L

egge

d Fr

ogs

(CR

LF) w

ill co

nduc

t a tr

aini

ng s

essi

on to

fam

iliariz

e al

l rem

edia

tion

pers

onne

l with

id

entif

icat

ion

of C

RLF

and

oth

er s

ensi

tive

spec

ies

,suc

h as

Cal

iforn

ia h

orne

d liz

ard

and

north

wes

tern

pon

d tu

rtle,

thei

r ha

bita

t, ge

nera

l pro

visi

ons

and

prot

ectio

ns a

fford

ed b

y th

e E

ndan

gere

d S

peci

es A

ct, m

easu

res

impl

emen

ted

to

prot

ect t

hese

spe

cies

, the

lim

its o

f pr

ojec

t wor

k w

ill al

so b

e di

scus

sed.

D

urin

g th

is tr

aini

ng, a

ll re

med

iatio

n pe

rson

nel w

ill be

pro

vide

d w

ith s

peci

es

iden

tific

atio

n ca

rds

that

incl

ude

spec

ies

phot

os.

All

rem

edia

tion

pers

onne

l and

su

bcon

tract

ors

will

com

plet

e th

e tra

inin

g

Less

Tha

n S

igni

fican

t N

one

Req

uire

d Le

ss T

han

Sig

nific

ant

Page 19

Sum

mar

y of

the

Proj

ect

Site

Cha

ract

eriz

atio

n an

d R

emed

iatio

n D

raft

Pro

gram

EIR

Em

pire

Min

e S

tate

His

toric

Par

k C

alifo

rnia

Dep

artm

ent o

f Par

ks &

Rec

reat

ion

Aug

ust 2

009

S-1

9 S

umm

ary

v25

Impa

cts

Proj

ect R

equi

rem

ents

Leve

l of

Sign

ifica

nce

Bef

ore

Miti

gatio

n M

itiga

tion

Mea

sure

s

Leve

l of

Sign

ifica

nce

Afte

r M

itiga

tion

indi

vidu

als;

dis

rupt

ion

of

norm

al b

reed

ing,

feed

ing,

an

d sh

elte

ring

beha

vior

; or

mod

ifica

tion

of h

abita

t. In

ad

ditio

n, re

mov

al o

r m

odifi

catio

n of

veg

etat

ion

with

in s

uita

ble

habi

tat

coul

d re

sult

in lo

ss o

f pr

otec

tive

cove

r and

sh

adin

g fo

r thi

s sp

ecie

s.

befo

re th

ey a

re a

utho

rized

to w

ork

on th

e R

emed

iatio

n A

rea.

•

The

Pro

ject

Pro

pone

nts

will

desi

gnat

e an

of

ficia

l poi

nt o

f con

tact

(PO

C) t

o be

at t

he

Par

k du

ring

Pro

gram

Act

ions

in c

ase

a C

RLF

is fo

und.

If a

CR

LF is

foun

d at

the

Par

k, a

ll w

ork

in th

at lo

catio

n w

ill be

te

mpo

raril

y ha

lted

and

dive

rted

to

anot

her l

ocat

ion

until

DP

R’s

Sta

te

Rep

rese

ntat

ive

is c

onta

cted

and

the

US

FWS-

appr

oved

bio

logi

st a

nd th

e U

SFW

S a

re c

onsu

lted

for f

urth

er

dire

ctio

n.

• A

US

FWS

-app

rove

d bi

olog

ist w

ill be

pr

esen

t at a

ll tim

es d

urin

g in

stal

latio

n an

d re

mov

al o

f a te

mpo

rary

stre

am

cros

sing

at L

ittle

Wol

f Cre

ek, i

f and

whe

n ne

eded

. Im

pact

4.3

-1(B

) –

Prog

ram

Act

ions

at t

he

Park

Cou

ld H

ave

a Su

bsta

ntia

l Adv

erse

Ef

fect

, Eith

er D

irect

ly o

r Th

roug

h H

abita

t M

odifi

catio

n, o

n W

illow

Fl

ycat

cher

B

ased

on

a re

view

of

appl

icab

le d

atab

ases

, the

w

illow

flyc

atch

er c

ould

po

tent

ially

occ

ur a

t the

P

ark.

Willo

w fl

ycat

cher

BIO

-4:

• A

ll P

roje

ct A

ctio

ns w

ith th

e po

tent

ial t

o af

fect

nes

ting

bird

s (a

s de

term

ined

by

a D

PR

-qua

lifie

d bi

olog

ist)

will

not o

ccur

du

ring

the

bree

ding

sea

son

(Mar

ch 1

–

Aug

ust 3

1).

•

If P

roje

ct A

ctio

ns a

re re

quire

d du

ring

the

Cal

iforn

ia S

potte

d O

wl b

reed

ing

seas

on (M

arch

1 -

Aug

ust 3

1), p

roto

col-

leve

l sur

veys

to d

eter

min

e ne

stin

g st

atus

will

be

requ

ired.

If t

he o

wl p

air i

s de

term

ined

to b

e no

n-br

eedi

ng,

Pro

gram

Act

ions

will

be p

erm

itted

. If

the

owl p

air i

s de

term

ined

to b

e

Less

Tha

n S

igni

fican

t N

one

Req

uire

d Le

ss T

han

Sig

nific

ant

Page 20

Sum

mar

y of

the

Proj

ect

Site

Cha

ract

eriz

atio

n an

d R

emed

iatio

n D

raft

Pro

gram

EIR

Em

pire

Min

e S

tate

His

toric

Par

k C

alifo

rnia

Dep

artm

ent o

f Par

ks &

Rec

reat

ion

Aug

ust 2

009

S-2

0 S

umm

ary

v25

Impa

cts

Proj

ect R

equi

rem

ents

Leve

l of

Sign

ifica

nce

Bef

ore

Miti

gatio

n M

itiga

tion

Mea

sure

s

Leve

l of

Sign

ifica

nce

Afte

r M

itiga

tion

was

not

obs

erve

d du

ring

prot

ocol

-leve

l sur

veys

and

it

was

det

erm

ined

that

this

sp

ecie

s cu

rrent

ly h

as a

low

po

tent

ial f

or o

ccur

renc

e at

th

e P

ark.

How

ever

, willo

w

flyca

tche

r cou

ld p

oten

tially

oc

cupy

ripa

rian

habi

tat i

n th

e P

ark

in th

e fu

ture

, in

whi

ch c

ase

Prog

ram

A

ctio

ns w

ithin

ripa

rian

habi

tat c

ould

pot

entia

lly

dist

urb

or d

estro

y ne

sts

and

adve

rsel

y im

pact

ha

bita

t; th

eref

ore,

resu

lting

in

take

.

bree

ding

, no

Pro

ject

Act

ions

with

the

pote

ntia

l to

crea

te n

oise

dis

turb

ance

will

be a

llow

ed w

ithin

1,0

00 fe

et o

f the

ac

tive

nest

unt

il af

ter t

he y

oung

hav

e fle

dged

and

hav

e th

e ab

ility

to fl

y ou

t of

the

area

of d

istu

rban

ce, a

s de

term

ined

by

a D

PR

-qua

lifie

d bi

olog

ist.

If s

ite

cond

ition

s do

not

allo

w fo

r a b

uffe

r of

1,00

0 fe

et, t

he P

roje

ct P

ropo

nent

s w

ill

cons

ult w

ith th

e U

SFW

S a

nd C

DFG

, as

appr

opria

te.

•

If P

roje

ct A

ctio

ns th

at c

ould

pot

entia

lly

caus

e ta

ke o

f oth

er n

estin

g bi

rd s

peci

es

(as

dete

rmin

ed b

y a

DP

R-q

ualif

ied

biol

ogis

t) ar

e ne

cess

ary

durin

g th

e br

eedi

ng s

easo

n (M

arch

1 -

Aug

ust 3

1),

pre-

cons

truct

ion

surv

eys

will

be

requ

ired.

If n

estin

g bi

rds

are

dete

rmin

ed to

be

non-

bree

ding

, P

rogr

am A

ctio

ns w

ill be

per

mitt

ed. I

f ne

stin

g se

nsiti

ve b

irds,

rapt

ors,

and

/or

mig

rato

ry b

irds

are

foun

d at

the

Par

k, a

bu

ffer a

rea

of 1

,000

feet

, 250

feet

or

100

feet

, res

pect

ivel

y, w

ill b

e es

tabl

ishe

d ar

ound

the

nest

(s);

no

Pro

ject

Act

ions

that

cou

ld p

oten

tially

ca

use

nest

failu

re

will

be p

erm

itted

unt

il th

e ne

st is

va

cate

d an

d th

e ju

veni

les

have

fled

ged,

as

det

erm

ined

by

a D

PR

-qua

lifie

d bi

olog

ist.

B

IO-5

: •

The

Pro

ject

Pro

pone

nts

will

not r

emov

e

Page 21

Sum

mar

y of

the

Proj

ect

Site

Cha

ract

eriz

atio

n an

d R

emed

iatio

n D

raft

Pro

gram

EIR

Em

pire

Min

e S

tate

His

toric

Par

k C

alifo

rnia

Dep

artm

ent o

f Par

ks &

Rec

reat

ion

Aug

ust 2

009

S-2

1 S

umm

ary

v25

Impa

cts

Proj

ect R

equi

rem

ents

Leve

l of

Sign

ifica

nce

Bef

ore

Miti

gatio

n M

itiga

tion

Mea

sure

s

Leve

l of

Sign

ifica

nce

Afte

r M

itiga

tion

any

trees

equ

al to

or g

reat

er th

an 1

5-in

ches

dia

met

er a

t bre

ast h

eigh

t (4.

5 fe

et) u

nles

s fir

st in

spec

ted

by a

DP

R-

qual

ified

bio

logi

st a

nd d

eter

min

ed to

be

unsu

itabl

e as

nes

ting

habi

tat f

or

Cal

iforn

ia S

potte

d O

wls

and

oth

er

sens

itive

bird

s.

Impa

ct 4

.3-1

(C) –

Pro

gram

A

ctio

ns a

t the

Par

k C

ould

H

ave

a Su

bsta

ntia

l Adv

erse

Ef

fect

, Eith

er D

irect

ly o

r Th

roug

h H

abita

t M

odifi

catio

n, o

n N

ativ

e Ve

geta

tion

Pote

ntia

lly

Supp

ortin

g U

nlis

ted

Spec

ial-

Stat

us S

peci

es:

Two

spec

ial-s

tatu

s w

ildlif

e sp

ecie

s, C

oope

r’s h

awk

and

Cal

iforn

ia s

potte

d ow

l, ha

ve

been

obs

erve

d w

ithin

fore

sted

ha

bita

t in

the

Par

k.

Add

ition

ally

, the

re a

re 2

4 no

n-lis

ted

spec

ial-s

tatu

s w

ildlif

e sp

ecie

s th

at w

ere

not o

bser

ved

in th

e P

ark

durin

g th

e 20

08

surv

eys,

but

hav

e a

mod

erat

e po

tent

ial f

or o

ccur

renc

e w

ithin

va

rious

veg

etat

ion

com

mun

ities

.

BIO

-7:

• P

rior t

o im

plem

enta

tion

of P

rogr

am

Act

ions

, the

Pro

ject

Pro

pone

nts

will

de

term

ine

and

use

the

min

imum

are

a ne

cess

ary

for P

rogr

am A

ctio

ns, i

nclu

ding

st

agin

g an

d ac

cess

, and

pla

ce o

rang

e co

nstru

ctio

n fe

ncin

g or

flag

ging

aro

und

the

boun

darie

s of

the

prop

osed

wor

k ar

ea.

Exi

stin

g di

stur

bed

area

s w

ill b

e us

ed to

the

exte

nt p

ossi

ble.

Unl

ess

prio

r ap

prov

al is

obt

aine

d fro

m D

PR

, re

med

iatio

n ac

tions

will

rem

ain

with

in th

e de

sign

ated

wor

k ar

ea(s

) to

min

imiz

e ha

bita

t dis

turb

ance

. H

YD

RO

-1:

• P

rior t

o th

e st

art o

f Pro

gram

Act

ions

in

volv

ing

grou

nd d

istu

rbin

g ac

tiviti

es, t

he

Pro

ject

Pro

pone

nts

will

pre

pare

and

su

bmit

a S

torm

Wat

er P

ollu

tion

Pre

vent

ion

Pla

n (S

WP

PP

) tha

t ide

ntifi

es

the

tem

pora

ry (e

.g.,

tarp

ing

any

stoc

kpile

d m

ater

ials

or s

oil;

cons

truct

ing

silt

fenc

es, i

nsta

llatio

n of

stra

w b

ale

barri

ers,

fibe

r rol

ls, e

tc.)

and

perm

anen

t (e

.g.,

utiliz

ing

stru

ctur

al c

onta

inm

ent a

nd

Pot

entia

lly

Sig

nific

ant

Miti

gatio

n M

easu

re 4

.3-1

: R

esto

ratio

n Fo

llow

ing

tem

pora

ry

dist

urba

nce

of h

abita

t tha

t oc

curs

as

a re

sult

of P

rogr

am

Act

ions

, the

Pro

ject

Pro

pone

nts

will

reve

geta

te d

istu

rbed

are

as

with

loca

lly-c

olle

cted

nat

ive

plan

t spe

cies

app

ropr

iate

to th

e R

emed

iatio

n A

rea

and

plan

ted

to re

sult

in s

peci

es c

ompo

sitio

n th

at is

sim

ilar t

o th

e pr

e-co

nstru

ctio

n co

nditi

on a

t the

P

ark.

Res

tora

tion

effo

rts w

ill be

in

com

plia

nce

with

DP

R’s

cu

rrent

pol

icie

s. A

dditi

onal

ly,

aqua

tic a

nd h

ydro

logi

c fe

atur

es

will

be re

stor

ed to

pre

-pro

ject

co

nditi

ons.

Less

Tha

n S

igni

fican

t

Page 22

Sum

mar

y of

the

Proj

ect

Site

Cha

ract

eriz

atio

n an

d R

emed

iatio

n D

raft

Pro

gram

EIR

Em

pire

Min

e S

tate

His

toric

Par

k C

alifo

rnia

Dep

artm

ent o

f Par

ks &

Rec

reat

ion

Aug

ust 2

009

S-2

2 S

umm

ary

v25

Impa

cts

Proj

ect R

equi

rem

ents

Leve

l of

Sign

ifica

nce

Bef

ore

Miti

gatio

n M

itiga

tion

Mea

sure

s

Leve

l of

Sign

ifica

nce

Afte

r M

itiga

tion

plan

ting

vege

tatio

n) B

MP

s to

be

used

in

all R

emed

iatio

n A

reas

, to

redu

ce o

r el

imin

ate

the

disc

harg

e of

soi

l, su

rface

w

ater

runo

ff, a

nd p

ollu

tant

s du

ring

exca

vatio

n, g

radi

ng, a

ggre

gate

cov

er

inst

alla

tion,

and

any

oth

er g

roun

d di

stur

bing

act

iviti

es.

The

SW

PP

P w

ill al

so in

clud

e BM

Ps fo

r haz

ardo

us w

aste

an

d co

ntam

inat

ed s

oil m

anag

emen

t, an

d a

Spi

ll P

reve

ntio

n an

d C

ontro

l Pla

n (S

PC

P).

Im

pact

4.3

-1(D

) –

Prog

ram

Act

ions

at t

he

Park

Cou

ld H

ave

a Su

bsta

ntia

l Adv

erse

Ef

fect

, Eith

er D

irect

ly o

r Th

roug

h H

abita

t M

odifi

catio

n, o

n B

ats

Alth

ough

focu

sed

surv

eys

for s

peci

al-s

tatu

s ba

t sp

ecie

s ha

ve n

ot b

een

cond

ucte

d, it

was

de

term

ined

that

up

to

seve

n sp

ecia

l-sta

tus

bat

spec

ies

coul

d po

tent

ially

oc

cur i

n th

e Pa

rk.

Bat

s co

uld

be ro

ostin

g in

sna

gs

and

som

e of

the

larg

er

trees

with

in fo

rest

ed

porti

ons

of th

e P

ark,

in th

e bu

ildin

gs, a

nd in

min

e sh

afts

. R

emov

al o

f sna

gs

BIO

-6:

• P

roje

ct A

ctio

ns w

ill oc

cur o

utsi

de th

e m

ater

nity

sea

son

for b

ats

(Mar

ch 1

–

Aug

ust 3

1).

Prio

r to

the

star

t of P

roje

ct

Act

ions

, a D

PR

-qua

lifie

d bi

olog

ist w

ill

cond

uct a

pre

senc

e/ab

senc

e ba

t sur

vey

if sn

ag a

nd/o

r tre

e re

mov

al, o

r roo

f m

odifi

catio

n ar

e sc

hedu

led

to o

ccur

du

ring

mat

erni

ty s

easo

n. If

bat

s ar

e no

t de

tect

ed, P

rogr

am A

ctio

ns w

ill be

pe

rmitt

ed. I

f bat

s ar

e de

tect

ed, a

DP

R-

qual

ified

bio

logi

st w

ill es

tabl

ish

a 50

-foot

bu

ffer e

xclu

sion

zon

e ar

ound

eac

h oc

cupi

ed lo

catio

n un

til th

e ro

ostin

g ac

tiviti

es h

ave

ceas

ed, a

s de

term

ined

by

a D

PR

-qua

lifie

d bi

olog

ist.

Pot

entia

lly

Sig

nific

ant

No

feas

ible

miti

gatio

n m

easu

res

iden

tifie

d P

oten

tially

S

igni

fican

t and

U

navo

idab

le

Page 23

Sum

mar

y of

the

Proj

ect

Site

Cha

ract

eriz

atio

n an

d R

emed

iatio

n D

raft

Pro

gram

EIR

Em

pire

Min

e S

tate

His

toric

Par

k C

alifo

rnia

Dep

artm

ent o

f Par

ks &

Rec

reat

ion

Aug

ust 2

009

S-2

3 S

umm

ary

v25

Impa

cts

Proj

ect R

equi

rem

ents

Leve

l of

Sign

ifica

nce

Bef

ore

Miti

gatio

n M

itiga

tion

Mea

sure

s

Leve

l of

Sign

ifica

nce

Afte

r M

itiga

tion

or la

rge

trees

, or

mod

ifica

tion

of b

uild

ings

co

uld

resu

lt in

dis

turb

ance

to

, and

/or m

orta

lity

of,

bree

ding

bat

s.

Im

pact

4.3

-1(E

) – P

rogr

am

Act

ions

at t

he P

ark

Cou

ld

Hav

e a

Subs

tant

ial A

dver

se

Effe

ct, E

ither

Dire

ctly

or

Thro

ugh

Hab

itat

Mod

ifica

tion,

on

Nes

ting

Rap

tors

and

Mig

rato

ry B

irds

Nes

ting

rapt

ors

know

n to

occ

ur

in th

e P

ark

incl

ude

Coo

per’s

ha

wk

and

Cal

iforn

ia s

potte

d ow

l. O

ther

nes

ting

rapt

ors

coul

d po

tent

ially

nes

t in

the

Par

k, in

clud

ing

but n

ot li

mite

d to

, var

ious

haw

k an

d ow

l sp

ecie

s. A

dditi

onal

ly,

mig

rato

ry b

ird s

peci

es c

ould

ne

st in

any

of t

he v

eget

atio

n in

th

e P

ark,

and

mig

rato

ry

swal

low

s co

uld

nest

in e

aves

of

bui

ldin

gs a

nd n

ear

entra

nces

to m

ine

shaf

ts.

Dis

turb

ance

of v

eget

atio

n an

d/or

stru

ctur

es c

ould

resu

lt in

the

take

of n

estin

g ra

ptor

s an

d m

igra

tory

bird

s. T

wel

ve o

f

BIO

-4:

• A

ll P

roje

ct A

ctio

ns w

ith th

e po

tent

ial t

o af

fect

nes

ting

bird

s (a

s de

term

ined

by

a D

PR

-qua

lifie

d bi

olog

ist)

will

not o

ccur

du

ring

the

bree

ding

sea

son

(Mar

ch 1

–

Aug

ust 3

1).

•

If P

roje

ct A

ctio

ns a

re re

quire

d du

ring

the

Cal

iforn

ia S

potte

d O

wl b

reed

ing

seas

on

(Mar

ch 1

- A

ugus

t 31)

, pro

toco

l-lev

el

surv

eys

to d

eter

min

e ne

stin

g st

atus

will

be

requ

ired.

If t

he o

wl p

air i

s de

term

ined

to

be

non-

bree

ding

, Pro

gram

Act

ions

will

be p

erm

itted

. If

the

owl p

air i

s de

term

ined

to b

e br

eedi

ng, n

o P

roje

ct

Act

ions

with

the

pote

ntia

l to

crea

te n

oise

di

stur

banc

e w

ill b

e al

low

ed w

ithin

1,0

00

feet

of t

he a

ctiv

e ne

st u

ntil

afte

r the

yo

ung

have

fled

ged

and

have

the

abili

ty

to fl

y ou

t of t

he a

rea

of d

istu

rban

ce, a

s de

term

ined

by

a D

PR

-qua

lifie

d bi

olog

ist.

If

site

con

ditio

ns d

o no

t allo

w fo

r a b

uffe

r of

1,0

00 fe

et, t

he P

roje

ct P

ropo

nent

s w

ill co

nsul

t with

the

US

FWS

and

CD

FG, a

s ap

prop

riate

.

• If

Pro

ject

Act

ions

that

cou

ld p

oten

tially

Pot

entia

lly

Sig

nific

ant

Miti

gatio

n M

easu

re

4.3-

2:

Hab

itat R

epla

cem

ent

Upo

n co

mpl

etio

n of

Pro

gram

A

ctio

ns in

the

Rem

edia

tion

Are

a, th

e P

roje

ct P

ropo

nent

s w

ill re

plac

e an

y re

mov

ed tr

ee

with

a d

bh g

reat

er th

an 1

5 in

ches

and

that

a D

PR

-qua

lifie

d bi

olog

ist d

eter

min

ed to

be

suita

ble

Cal

iforn

ia S

potte

d O

wl

nest

ing

habi

tat a

t a 3

:1 ra

tio

with

in th

e P

ark

and

cons

istin

g of

see

dlin

gs fr

om n

ativ

e tre

e sp

ecie

s pr

opag

ated

from

see

d co

llect

ed w

ithin

the

Par

k. A

D

PR

-qua

lifie

d bi

olog

ist w

ill ap

prov

e th

e lo

catio

n of

new

tre

es.

.

Pot

entia

lly

Sig

nific

ant a

nd

Una

void

able

Page 24

Sum

mar

y of

the

Proj

ect

Site

Cha

ract

eriz

atio

n an

d R

emed

iatio

n D

raft

Pro

gram

EIR

Em

pire

Min

e S

tate

His

toric

Par

k C

alifo

rnia

Dep

artm

ent o

f Par

ks &

Rec

reat

ion

Aug

ust 2

009

S-2

4 S

umm

ary

v25

Impa

cts

Proj

ect R

equi

rem

ents

Leve

l of

Sign

ifica

nce

Bef

ore

Miti

gatio

n M

itiga

tion

Mea

sure

s

Leve

l of

Sign

ifica

nce

Afte

r M

itiga

tion

the

thirt

een

rem

edia

tion

optio

ns c

ould

resu

lt in

ve

geta

tion

rem

oval

and

/or

mod

ifica

tion

of s

truct

ures

. R

emov

al o

f veg

etat

ion

incl

udin

g tre

es c

ould

resu

lt in

al

tera

tion

of h

abita

t for

nes

ting

rapt

ors

or m

igra

tory

bird

s.

caus

e ta

ke o

f oth

er n

estin

g bi

rd s

peci

es

(as

dete

rmin

ed b

y a

DP

R-q

ualif

ied

biol

ogis

t) ar

e ne

cess

ary

durin

g th

e br

eedi

ng s

easo

n (M

arch

1 -

Aug

ust 3

1),

pre-

cons

truct

ion

surv

eys

will

be re

quire

d.

If ne

stin

g bi

rds

are

dete

rmin

ed to

be

non-

bree

ding

, Pro

gram

Act

ions

will

be

perm

itted

. If n

estin

g se

nsiti

ve b

irds,

ra

ptor

s, a

nd/o

r mig

rato

ry b

irds

are

foun

d at

the

Par

k, a

buf

fer a

rea

of 1

,000

feet

, 25

0 fe

et o

r 100

feet

, res

pect

ivel

y, w

ill be

es

tabl

ishe

d ar

ound

the

nest

(s);

no

Pro

ject

Act

ions

that

cou

ld p

oten

tially

ca

use

nest

failu

re

will

be p

erm

itted

unt

il th

e ne

st is

vac

ated

an

d th

e ju

veni

les

have

fled

ged,

as

dete

rmin

ed b

y a

DP

R-q

ualif

ied

biol

ogis

t.

BIO

-5:

• Th

e P

roje

ct P

ropo

nent

s w

ill no

t rem

ove

any

trees

equ

al to

or g

reat

er th

an 1

5-in

ches

dbh

unl

ess

first

insp

ecte

d by

a

DP

R-q

ualif

ied

biol

ogis

t and

det

erm

ined

to

be

unsu

itabl

e as

nes

ting

habi

tat f

or

Cal

iforn

ia S

potte

d O

wls

and

oth

er

sens

itive

bird

s.

Page 25

Sum

mar

y of

the

Proj

ect

Site

Cha

ract

eriz

atio

n an

d R

emed

iatio

n D

raft

Pro

gram

EIR

Em

pire

Min

e S

tate

His

toric

Par

k C

alifo

rnia

Dep

artm

ent o

f Par

ks &

Rec

reat

ion

Aug

ust 2

009

S-2

5 S

umm

ary

v25

Impa

cts

Proj

ect R

equi

rem

ents

Leve

l of

Sign

ifica

nce

Bef

ore

Miti

gatio

n M

itiga

tion

Mea

sure

s

Leve

l of

Sign

ifica

nce

Afte

r M

itiga

tion

Impa

ct 4

.3-2

: Pr

ogra

m

Act

ions

at t

he P

ark

Cou

ld

Req

uire

Act

iviti

es th

at

Wou

ld H

ave

a Su

bsta

ntia

l A

dver

se E

ffect

on

Rip

aria

n H

abita

t or O

ther

Sen

sitiv

e N

atur

al C

omm

unity

Id

entif

ied

in L

ocal

or

Reg

iona

l Pla

ns, P

olic

ies,

or

Reg

ulat

ions

, or b

y th

e C

DFG

or

the

USF

WS

Twel

ve o

f the

thirt

een

rem

edia

tion

optio

ns c

ould

re

sult

in lo

ss o

f rip

aria

n ha

bita

t or

oth

er s

ensi

tive

natu

ral

com

mun

ity, w

hich

are

id

entif

ied

in lo

cal o

r reg

iona

l pl

ans,

pol

icie

s, o

r reg

ulat

ions

, or

by

the

CD

FG o

r the

U

SFW

S.

BIO

-7:

• P

rior t

o im

plem

enta

tion

of P

rogr

am

Act

ions

, the

Pro

ject

Pro

pone

nts

will

de

term

ine

and

use

the

min

imum

are

a ne

cess

ary

for P

rogr

am A

ctio

ns, i

nclu

ding

st

agin

g an

d ac

cess

, and

pla

ce o

rang

e co

nstru

ctio

n fe

ncin

g or

flag

ging

aro

und

the

boun

darie

s of

the

prop

osed

wor

k ar

ea.

Exi

stin

g di

stur

bed

area

s w

ill b

e us

ed to

the

exte

nt p

ossi

ble.

Unl

ess

prio

r ap

prov

al is

obt

aine

d fro

m D

PR

, re

med

iatio

n ac

tions

will

rem

ain

with

in th

e de

sign

ated

wor

k ar

ea(s

).to

min

imiz

e ha

bita

t dis

turb

ance

. H

YDR

O-1

: •

Prio

r to

the

star

t of P

rogr

am A

ctio

ns

invo

lvin

g gr

ound

dis

turb

ing

activ

ities

, the

P

roje

ct P

ropo

nent

s w

ill p

repa

re a

nd

subm

it a

Sto

rm W

ater

Pol

lutio

n P

reve

ntio

n P

lan

(SW

PP

P) t

hat i

dent

ifies

th

e te

mpo

rary

(e.g

., ta

rpin

g an

y st

ockp

iled

mat

eria

ls o

r soi

l; co

nstru

ctin

g si

lt fe

nces

, ins

talla

tion

of s

traw

bal

e ba

rrier

s, fi

ber r

olls

, etc

.) an

d pe

rman

ent

(e.g

., ut

ilizin

g st

ruct

ural

con

tain

men

t and

pl

antin

g ve

geta

tion)

BM

Ps

to b

e us

ed in

al

l Rem

edia

tion

Are

as, t

o re

duce

or

elim

inat

e th

e di

scha

rge

of s

oil,

surfa

ce

wat

er ru

noff,

and

pol

luta

nts

durin

g ex

cava

tion,

gra

ding

, agg

rega

te c

over

in

stal

latio

n, a

nd a

ny o

ther

gro

und

dist

urbi

ng a

ctiv

ities

. Th

e S

WP

PP

will

also

incl

ude

BMPs

for h

azar

dous

was

te

Pot

entia

lly

Sig

nific

ant

Miti

gatio

n M

easu

re 4

.3-3

: R

ipar

ian

Hab

itat

To th

e ex

tent

pra

ctic

able

, the

P

roje

ct P

ropo

nent

s w

ill a

void

pe

rman

ent r

emov

al o

f ide

ntifi

ed

ripar

ian

vege

tatio

n. I

f the

im

pact

ed ri

paria

n ve

geta

tion

cann

ot b

e re

stor

ed fo

llow

ing

impa

cts

(e.g

., if

soil

or

topo

grap

hic

cond

ition

s ar

e m

odifi

ed to

the

exte

nt th

at

ripar

ian

vege

tatio

n ca

nnot

be

supp

orte

d at

the

impa

cted

lo

catio

n), t

he P

roje

ct

Pro

pone

nts

will

impl

emen

t rip

aria

n re

stor

atio

n,

enha

ncem

ent o

r oth

er fe

asib

le

met

hods

at a

n al

tern

ativ

e lo

catio

n to

ach

ieve

no

net l

oss

of ri

paria

n fu

nctio

ns a

nd v

alue

s

Pot

entia

lly

Sig

nific

ant a

nd

Una

void

able