Waterfront Substation - Pepco...Substation will exceed its firm capacity by 8% in the summer of 2017. • The Waterfront Substation is needed to support existing customers and planned

Waterfront Substation

July 8, 2015

I Pepco Holdinqs Inc

Project Milestones

2

I Pepco Holdings Inc

Waterfront

Substation

Impacted

/ Streets

,~--r___,.,.

' " C . ' 1,., , -0 C N

n


Site for Waterfront Substation

Overhead view of property

4


Waterfront Substation 1st and Q Streets SW

5


Waterfront Substation 1st and R Streets SW

6


Waterfront Substation Project Schedule

Obtain Permits for Waterfront Site Preparation* April – August 2015

Prepare Waterfront Site for Construction June – October 2015

Award EPC Contract; Perform Detail Engineering July 2015 – July 2016

Obtain Building Permit January 2016

Construct Substation Building January 2016 – April 2017

Install Electrical Equipment August 2016 – April 2017

Initial Transfer of Electrical Load May – June 2017

* Multiple permits are needed and duration may extend beyond date shown

7


Permits Status

8


5

Permit Matrix Permit/Notice Agency Demolition Substation

Construction

Transmission

Construction

1 Notice of Construction DC PSC NA Received Received

3 Underground Storage Tank

Activity Notification

DDOE Complete NA NA

4 Leaking Underground Storage

Tank Directive Letter

DDOE Received,

Pending Action

NA NA

Erosion and Sediment Control DDOE Pending Pending Pending

Permit Application Application Application

6 Storm Water Management Plan DDOE Pending Pending NA

Application Application

7 Asbestos Abatement Permit DDOE Complete NA NA

8 Building Permit Supplemental Form – Environ. Questionnaire

DDOE Pending

Application

Pending

Application

NA

9 Lead Abatement Permit DDOE Complete NA NA

10 Raze Application & Certification DCRA Application

Submitted

NA NA

11 Building Permit Application DCRA NA Pending

Application

NA

9


Permit Matrix Permit/Notice Agency Demolition Substation

Construction

Transmission

Construction

12 Environmental Intake Form DCRA NA Pending

Application

NA

13 Environmental Impact

Screening Form (EISF)

DCRA NA Pending

Application

Pending

Application

14 DC Green Building Act

Permit Application Intake Form

DCRA NA Pending

Application

NA

15 Zoning Approval BZA NA Complete NA

16 Certificate of Occupancy DCRA NA Pending

Application

NA

17 DC Well Construction Permit DCRA/

DDOE

Complete NA Complete

18 Public Space / ROW Permit DDOT Pending

Application

Pending

Application

Pending

Application

19 Traffic Control Permit DDOT Pending

Application

Pending

Application

Pending

Application

20 Occupancy Permit DDOT NA NA Pending

Application

21 Steel Plate Permit DDOT NA NA Pending

Application

10


Demolition and Mitigation Measures

11


Demolition Schedule

Applied for Raze permits for the 3

existing buildings.

Raze process should take 6 weeks

to complete- likely start in July 2015.

Raze the buildings, place four inches

of topsoil and seed the entire site.

AECOM is environmental lead for

HazMat Assessment and Abatement.

McCormick & Taylor is the third-party

environmental monitor for Demo and

Construction.

Contractor will monitor the

surrounding roadways for tracked

soil and will utilize street sweepers

when needed.

Site Controls: silt fencing, hay bales,

gravel construction entrance,

stormwater inlet protection and

mister for dust control.

12


Construction & Mitigation Measures

Limit noise-sensitive

construction activities during

daytime as per DC Noise

ordinance.

Notify community in advance of

any excessive noise activities

Shut down idling construction

equipment.

Stabilized construction entrance

on 2nd St., SW.

No permanent street/lane

closures anticipated during

construction.

Crews will utilize DDOT

approved traffic control plans.

13

http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http://classicstaruae.com/our-products/construction-equipment/&ei=CSCVVfCzEoav-AHi6oyQBg&bvm=bv.96952980,d.cWw&psig=AFQjCNGlicuCpKhwmm3ck2v1mXfIXj3Xig&ust=1435922651177236

Asbestos and Lead Removal

Asbestos and lead abatement

completed in June 2015 in

accordance with DC Regulations.

Abatement conducted under

negative pressure conditions with

sealed doors utilizing proper worker

protection (HEPA filters).

Monitored the air to ensure no

workers were exposed and no

particles become airborne off site.

Submitted air monitoring report to

DDOE to ensure compliance.

Lead paint collected and disposed

to an off site to licensed facility.

Temporary EPA ID # was acquired

to dispose of hazardous material.

14

'?; vi 1-w w ty Iv, 0 z 0 V w (f/

C: STRE~T S .V, .

' ' -·0 "'·' --·--·---+·-------- ---·~ ze-, . ----- ---------- --

r ',, \j; i c: ___ __i :o,),:c::.F· 1

i ' ···~ !

t::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::J~SWf ____ J ~r,,,_ ~~~~~-·-.·

0

·_--_·c--·.--.-·-·-·-·-J· ~:-;.-·"~.-::~:._:·"'. ;---·-··---- ·-··--··---·-··------·-··-·--···-·-··-·-----··-·------- V

9 ;,


I w w (: 1-01

1-u:

"' i.:

Environmental Assessments Soil Sampling Locations

Substation Site

15


Waterfront Environmental Impact: Soil Sampling Results

38 Substances Tested at 12 Locations (4 Foot Depth)

34 Not Detected

Benzene

Ethylbenzene

Toluene

Diesel Range Organics

PCBs - Non-aqueous

Mercury

Arsenic

Cadmium

Chromium

4 Detected

Selenium

Silver

1,4-Dichlorobenzene

2,4-Dinitrotoluene

Hexachlorobenzene

Hexachlorobutadiene

Hexachloroethane

2-Methylphenol

3- & 4- Methylphenol

Nitrobenzene

Pentachlorophenol

Pyridine

2,4,5-Trichlorophenol

2,4,6-Trichlorophenol

Benzene

Carbon Tetrachloride

Chlorobenzene

Chloroform

1,2-Dichloroethane

1,1-Dichloroethene

Methyl Ethyl Ketone

Tetrachloroethene

Trichloroethene

Vinyl Chloride

Organic Halides

Xylenes Gasoline Range Barium Lead

(504 mg/kg)** Organics (814 mg/kg)** (100 mg/l)** (5 mg/l)**

0.018 mg/kg (1

location) 2.40 mg/kg average 0.91 mg/l average 0.21 mg/l average

(DC Action Level Standards in parenthesis)**

16


Waterfront Environmental Impact: Soil Sampling Results

38 Substances Tested at 12 Locations (8 Foot Depth)

36 Not Detected

Benzene Selenium 3- & 4- Methylphenol Chlorobenzene

Ethylbenzene Silver Nitrobenzene Chloroform

Toluene 1,4-Dichlorobenzene Pentachlorophenol 1,2-Dichloroethane

Diesel Range Organics 2,4-Dinitrotoluene Pyridine 1,1-Dichloroethene

PCBs - Non-aqueous Hexachlorobenzene 2,4,5-Trichlorophenol Methyl Ethyl Ketone

Mercury Hexachlorobutadiene 2,4,6-Trichlorophenol Tetrachloroethene

Arsenic Hexachloroethane Benzene Trichloroethene

Cadmium 2-Methylphenol Carbon Tetrachloride Vinyl Chloride

Chromium Xylenes

Gasoline Range

Organics Organic Halides

2 Detected

Barium Lead

(100 mg/l)** (5 mg/l)**

1.22 mg/kg average 0.24 mg/l (1 location)

(DC Action Level Standards in parenthesis)**

17


DDOE Directive Letter – Leaking Underground Storage Tank (LUST)

Underground Storage Tanks were

removed without going through

proper Underground Storage Tank

Closure process with DDOE.

To remove the soil, requested

Erosion and Sediment Control

permits from DDOE.

LUST case was opened by

DDOE.

Soil with petroleum residue is

being removed and disposed of at

an authorized facility by AECOM.

18


Appendix

19

undefined: undefined_2: undefined_3: j 1 1 l: undefined_4: LOT 809 USQ H: r: Benzene: Selenium: Chlorobenzene: Ethylbenzene: Silver: Nitrobenzene: Chloroform: Toluene: Pyridine: Mercury: Arsenic: Benzene_2: Trichloroethene: Cadmium: Vinyl Chloride: 2MethylphenolChromium: Carbon TetrachlorideChromium: Organic Halides: Benzene_3: Selenium_2: Chlorobenzene_2: Ethylbenzene_2: Silver_2: Nitrobenzene_2: Chloroform_2: Toluene_2: Pyridine_2: Mercury_2: Arsenic_2: Benzene_4: Trichloroethene_2: Cadmium_2: 2Methylphenol: Vinyl Chloride_2: Chromium: Xylenes: Gasoline Range Organics: Organic Halides_2:

Documents

Waterfront Substation - Pepco...Substation will exceed its firm capacity by 8% in the summer of 2017. • The Waterfront Substation is needed to support existing customers and planned