Waterfront Substation

Transcription

1 Waterfront Substation July 8, 2015

2 Project Milestones I Pepco Holdinqs Inc 2

3 Waterfront Substation The Southeast and Southwest region of the District of Columbia is experiencing residential, commercial, and retail growth. As a result, Pepco predicts the existing Buzzard Point Substation will exceed its firm capacity by 8% in the summer of The Waterfront Substation is needed to support existing customers and planned development in the Capitol Riverfront and Southwest Waterfront areas and to replace aging infrastructure. QStSW Project Work Plan Description Phase 1: Substation site preparation and design Waterfront Substation Environmental assessment complete and remediation underway. Raze permit pending. Phase 2: Regulatory authorization and zoning BZA approval received in March 2015 and DC PSC approval in April Phase 3: Construction of the substation, transmission and distribution lines Preliminary conceptual engineering complete. Detail engineering starting soon or underway.,~--r,.,. ' " C. 1,., ', -0 C N Impacted / Streets n <" S St SW Buzzard Pt Substation ;-., c,... l I ~ I W; 3

4 Site for Waterfront Substation Overhead view of property 4

5 Waterfront Substation 1 st and Q Streets SW 5

6 Waterfront Substation 1 st and R Streets SW 6

7 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 I Pepco Holdinqs Inc 7

8 Permits Status I Pepco Holdinqs Inc 8

9 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 5 DDOE Received, Pending Action Erosion and Sediment Control DDOE Pending Pending Pending Permit 6 Storm Water Management Plan DDOE Pending Pending NA 7 Asbestos Abatement Permit DDOE Complete NA NA 8 Building Permit Supplemental Form Environ. Questionnaire DDOE Pending NA Pending 9 Lead Abatement Permit DDOE Complete NA NA NA NA 10 Raze & Certification DCRA Submitted NA NA 11 Building Permit DCRA NA Pending NA I Pepco Holdinqs Inc 9

10 Permit Matrix Permit/Notice Agency Demolition Substation Construction 12 Environmental Intake Form DCRA NA Pending 13 Environmental Impact Screening Form (EISF) 14 DC Green Building Act Permit Intake Form DCRA NA Pending DCRA NA Pending Transmission Construction NA Pending 15 Zoning Approval BZA NA Complete NA NA 16 Certificate of Occupancy DCRA NA Pending NA 17 DC Well Construction Permit DCRA/ DDOE Complete NA Complete 18 Public Space / ROW Permit DDOT Pending 19 Traffic Control Permit DDOT Pending Pending Pending Pending Pending 20 Occupancy Permit DDOT NA NA Pending 21 Steel Plate Permit DDOT NA NA Pending I Pepco Holdinqs Inc 10

11 Demolition and Mitigation Measures I Pepco Holdinqs Inc 11

12 Demolition Schedule Applied for Raze permits for the 3 existing buildings. Raze process should take 6 weeks to complete- likely start in July 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

13 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 2 nd St., SW. No permanent street/lane closures anticipated during construction. Crews will utilize DDOT approved traffic control plans. 13

14 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

15 Environmental Assessments Soil Sampling Locations C: STRE~T S.V,. ' ' - 0 "' ' ~ ze-, '?; vi 1- w ty I v, 0 z 0 V w (f/ r ', \j; i c: i :o,),:c::.f 1 i ' ~! I w (: u: "' i.: t::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::j~swf J ~r,,,_~~~~~- -. _--_ c J ~:-;.- "~.-::~:._: "'. ; V Substation Site 0 9 ;, 15

16 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 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 4 Detected Xylenes Gasoline Range Barium Lead (504 mg/kg)** Organics (814 mg/kg)** (100 mg/l)** (5 mg/l)** 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

17 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 Gasoline Range Xylenes 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

18 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

19 Appendix I Pepco Holdinqs Inc 19