Pollutant Minimization Plan for Polychlorinated Biphenyls (PCBs)

in the Delaware River Estuary

Robert HindtDelaware County Regional Water Quality Control Authority

100 East Fifth StChester, PA 19016

&John Botts

Aquatic Sciences Consulting2130 Glencourse Ln

Reston, VA 20191

Delaware Estuary Science & Environmental SummitThe Grand Hotel Cape May NJThe Grand Hotel, Cape May, NJ

January 13, 2009

Delaware River Basin

Fish tissue concentrations of polychlorinated biphenyls (PCBs) often exceed human h lth it i [i f d lhealth criteria [i.e., federal criteria of 0.17 ng/L and Delaware River Basin Commission (DRBC) criteria ( )of 0.0079 – 0.064 ng/L as total PCBs (later revised to 0.016 ng/L for all zones)]

DRBC set total maximum daily loads (TMDLs) for PCBs for zones 1 – 6

TMDLs allocated to point and non-point discharges

Existing Loadings Versus Stage 1 TMDLsDelaware Estuaryy

Taken from DRBC’s TMDL Report – September 2003

Pollutant Minimization Plan

PCBs have been banned since the late 1970s and municipal pretreatment ordinances prohibit PCB discharge to sewerpretreatment ordinances prohibit PCB discharge to sewer systems.

Residual PCBs are contributed from unknown and diffuse sources (e g atmosphere recycling); however treatment tosources (e.g., atmosphere, recycling); however, treatment to criteria levels is impractical

DRBC chose a pollution prevention approach:Section 4 30 9 of the 2005 Water Quality RegulationSection 4.30.9 of the 2005 Water Quality Regulation Amendments require dischargers to prepare and implement Pollutant Minimization Plans (PMP) to identify and control PCB sources in their service areas/facilities

Goal is to achieve a 50 percent reduction of the aggregate point and nonpoint loads of total PCBs within the next five years y

PCB Sources

Known Sources (i.e., contribute PCB levels in excess of the (water quality criteria and have defined pathway of release);Examples: atmospheric deposition, CSO tide gate infiltration, intake water, water supply

Potential Sources (i.e., PCBs present, but no pathway of release);E l l ki l t i l i t hExamples: non-leaking electrical equipment such as transformers, current and former waste sites, commercial and household materials

Unknown Sources - to be identified through “trackdown”

Pollution Prevention Effortsfor Known and Potential Sourcesfor Known and Potential Sources

Education ProgramsgPresentations at public meetings (EAC, LEPC)Handout PCB Brochure to interested groupsEducation of DELCORA personnel

Industrial User AwarenessRequested data on PCBs removed and stored at permitted Industrial Users; Documented survey results in data baseIndustrial Users; Documented survey results in data baseInspections now include review of site for potential PCB containing equipment and issues

Assess Waste and Abandoned SitesAssess Waste and Abandoned SitesVisited several sites within our sewer systemReviewing DelTriP reports and coordinating site visits with agencies

PCB Reduction Since 1990s(Documented by Internal Review and(Documented by Internal Review and

Industrial User Survey)

Project PCB Fluids Removed

DELCORA - Transformers 2960 KDELCORA Transformers and Capacitors 2960 Kg

Other Facility Projects 2025 lbs / 920 KgOther Facility Projects 2025 lbs / 920 Kg

Other Industrial Users 80,000+ KgOther Industrial Users 80,000 Kg

Total Over 83,000 Kg

Pollution Prevention Effortsfor Known and Potential Sourcesfor Known and Potential Sources

(continued)

Upgrade CSO and Stormwater InfrastructureRebuilt 24 storm inlets in 2006 and 30 in 2007Rebuilt 3 CSO Regulator ChambersInstalled remote monitoring systems at all CSOs

Clean and Rehabilitate SewersCleaned sediment from over 225,000 ft of sewer in 2006 and 380 000 ft in 2007380,000 ft in 2007Cleaned 300 ft of on-site storm sewerReplaced 160 ft of collapsed brick sewer and 3700 ft of pipe

Ph 1 T kd T t l PCB b S li L ti

Central Delaware County Authority

Phase 1 Trackdown: Total PCBs by Sampling Location

Authority

Central Delaware PS

ND69

ND2

ND

WRTP ServiceArea

Industry B95

Legend

33255

Chester PS

EPS-1 PS

g

12

Pump Station

Water (ng/L)

PISCES (ng/L)*

I d t i l U /WRTP I fl t

NM

23**7

255

ND19

ND27

WRTP Influent

Marcus Hook PSNaamans Creek PS

237

Industrial User/WRTP InfluentWater (ng/L)

PISCES (ng/L)*

ND – not detected by HRGC/LRMSNM = not measurable due to matrix interferencesNM Marcus Hook PS

Industry Ainterferences* PISCES – passive in-situ continuous extraction sampler** 2006 sample

Phase 2 Trackdown – EPS-1 Sewershed Sampling Locations95

95

Legend

Stony Creek Interceptor

Booth St Interceptor

West End Interceptor

Delaware Ave Interceptor

Trainer Sewer Line

DE

BNBE

Sampling Location

29195 Highway

291WE

BESI

WES

WENWEW

322

291TDEM

BSW WE

DESEPS

DE

CWRTP INF

Phase 2 Trackdown – EPS-1 Sewershed Results

CDE

291BSW10

WE18

Actual location (further east)

CDE16

T17

10

DEM18

DE37

Legend

Stony Creek Interceptor

Booth St Interceptor

West End InterceptorEPS

WRTP

C<1

INF23

West End Interceptor

Delaware Ave Interceptor

Trainer Sewer Line

CDE16

Sampling Locationand Total PCB Result (ng/L)

EPS67

WRTP 23

Question & Answer