Pollutant Minimization Plan for Polychlorinated Biphenyls (PCBs) in ...
Pollutant Minimization Plan for Polychlorinated Biphenyls (PCBs) in the Delaware River Estuary Robert Hindt Delaware County Regional Water Quality Control Authority 100 East Fifth St Chester, PA 19016 & John Botts Aquatic Sciences Consulting 2130 Glencourse Ln Reston, VA 20191
Delaware Estuary Science & Environmental Summit The Grand Hotel Hotel, Cape May May, NJ January 13, 2009
Delaware River Basin Fish tissue concentrations of polychlorinated biphenyls (PCBs) often exceed human h lth criteria health it i [i.e., [i federal f d l 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 TMDLs Delaware Estuary y
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 sewer systems. Residual PCBs are contributed from unknown and diffuse sources (e.g., (e g atmosphere atmosphere, recycling); however however, treatment to criteria levels is impractical DRBC chose a pollution prevention approach: Section 4 4.30.9 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 y years
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 Examples: l non-leaking l ki electrical l t i l equipment i t such h as transformers, current and former waste sites, commercial and household materials Unknown Sources - to be identified through “trackdown”
Pollution Prevention Efforts for Known and Potential Sources Education Programs g Presentations at public meetings (EAC, LEPC) Handout PCB Brochure to interested groups Education of DELCORA personnel
Industrial User Awareness Requested data on PCBs removed and stored at permitted Industrial Users; Documented survey results in data base Inspections now include review of site for potential PCB containing equipment and issues
Assess Waste and Abandoned Sites Visited several sites within our sewer system Reviewing DelTriP reports and coordinating site visits with agencies
PCB Reduction Since 1990s (Documented by Internal Review and Industrial User Survey) Project
PCB Fluids Removed
DELCORA - Transformers and Capacitors
2960 K Kg
Other Facility Projects
2025 lbs / 920 Kg
Other Industrial Users
80,000+ Kg 80,000
Total
Over 83,000 Kg
Pollution Prevention Efforts for Known and Potential Sources (continued)
Upgrade CSO and Stormwater Infrastructure Rebuilt 24 storm inlets in 2006 and 30 in 2007 Rebuilt 3 CSO Regulator Chambers Installed remote monitoring systems at all CSOs
Clean and Rehabilitate Sewers Cleaned sediment from over 225,000 ft of sewer in 2006 and 380 000 ft in 2007 380,000 Cleaned 300 ft of on-site storm sewer Replaced 160 ft of collapsed brick sewer and 3700 ft of pipe
Ph Phase 1T Trackdown: kd Total T t l PCBs PCB by b Sampling S li Location L ti Central Delaware County Authority ND 69
Central Delaware PS
WRTP Service Area ND 2
95
Industry B ND
Chester PS
33 EPS-1 PS 255 ND 27 Naamans Creek PS
NM Industry A
ND 19
23** WRTP Influent 7
Marcus Hook PS
Legend g Pump Station
1 2
Water (ng/L) PISCES (ng/L)*
I d ti lU Industrial User/WRTP /WRTP IInfluent fl t
23 7
Water (ng/L) PISCES (ng/L)*
ND – not detected by HRGC/LRMS NM = not measurable due to matrix interferences * PISCES – passive in-situ continuous extraction sampler ** 2006 sample
Phase 2 Trackdown – EPS-1 Sewershed Sampling Locations 95
Legend Stony Creek Interceptor
95
Booth St Interceptor West End Interceptor Delaware Ave Interceptor Trainer Sewer Line
DE
Sampling Location
95 291
Highway
BN SI BE
WEN WEW
WES
291
T
BSW
WE DE
291 DEM
EPS
C WRTP
INF
322 DES
Phase 2 Trackdown – EPS-1 Sewershed Results
CDE
16 Actual location (further east)
291
WE BSW T
18
10
17
Legend DE
DEM
37
18
Stony Creek Interceptor Booth St Interceptor
EPS
West End Interceptor
67
Delaware Ave Interceptor
C INF
WRTP
23
Delaware Estuary Science & Environmental Summit The Grand Hotel Hotel, Cape May May, NJ January 13, 2009
Delaware River Basin Fish tissue concentrations of polychlorinated biphenyls (PCBs) often exceed human h lth criteria health it i [i.e., [i federal f d l 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 TMDLs Delaware Estuary y
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 sewer systems. Residual PCBs are contributed from unknown and diffuse sources (e.g., (e g atmosphere atmosphere, recycling); however however, treatment to criteria levels is impractical DRBC chose a pollution prevention approach: Section 4 4.30.9 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 y years
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 Examples: l non-leaking l ki electrical l t i l equipment i t such h as transformers, current and former waste sites, commercial and household materials Unknown Sources - to be identified through “trackdown”
Pollution Prevention Efforts for Known and Potential Sources Education Programs g Presentations at public meetings (EAC, LEPC) Handout PCB Brochure to interested groups Education of DELCORA personnel
Industrial User Awareness Requested data on PCBs removed and stored at permitted Industrial Users; Documented survey results in data base Inspections now include review of site for potential PCB containing equipment and issues
Assess Waste and Abandoned Sites Visited several sites within our sewer system Reviewing DelTriP reports and coordinating site visits with agencies
PCB Reduction Since 1990s (Documented by Internal Review and Industrial User Survey) Project
PCB Fluids Removed
DELCORA - Transformers and Capacitors
2960 K Kg
Other Facility Projects
2025 lbs / 920 Kg
Other Industrial Users
80,000+ Kg 80,000
Total
Over 83,000 Kg
Pollution Prevention Efforts for Known and Potential Sources (continued)
Upgrade CSO and Stormwater Infrastructure Rebuilt 24 storm inlets in 2006 and 30 in 2007 Rebuilt 3 CSO Regulator Chambers Installed remote monitoring systems at all CSOs
Clean and Rehabilitate Sewers Cleaned sediment from over 225,000 ft of sewer in 2006 and 380 000 ft in 2007 380,000 Cleaned 300 ft of on-site storm sewer Replaced 160 ft of collapsed brick sewer and 3700 ft of pipe
Ph Phase 1T Trackdown: kd Total T t l PCBs PCB by b Sampling S li Location L ti Central Delaware County Authority ND 69
Central Delaware PS
WRTP Service Area ND 2
95
Industry B ND
Chester PS
33 EPS-1 PS 255 ND 27 Naamans Creek PS
NM Industry A
ND 19
23** WRTP Influent 7
Marcus Hook PS
Legend g Pump Station
1 2
Water (ng/L) PISCES (ng/L)*
I d ti lU Industrial User/WRTP /WRTP IInfluent fl t
23 7
Water (ng/L) PISCES (ng/L)*
ND – not detected by HRGC/LRMS NM = not measurable due to matrix interferences * PISCES – passive in-situ continuous extraction sampler ** 2006 sample
Phase 2 Trackdown – EPS-1 Sewershed Sampling Locations 95
Legend Stony Creek Interceptor
95
Booth St Interceptor West End Interceptor Delaware Ave Interceptor Trainer Sewer Line
DE
Sampling Location
95 291
Highway
BN SI BE
WEN WEW
WES
291
T
BSW
WE DE
291 DEM
EPS
C WRTP
INF
322 DES
Phase 2 Trackdown – EPS-1 Sewershed Results
CDE
16 Actual location (further east)
291
WE BSW T
18
10
17
Legend DE
DEM
37
18
Stony Creek Interceptor Booth St Interceptor
EPS
West End Interceptor
67
Delaware Ave Interceptor
C INF
WRTP
23
