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WATERSHED PERMITTING IN NORTH CAROLINA
NPDES PERMIT NCC000001 BECAME EFFECTIVE JAN 1, 2003
NEUSE RIVER COMPLIANCE ASSOCIATION
MORRIS V. BROOKHART, P.E.
DURHAM
RALEIGH
AREA: 6,192 SQ. MILES
3,497 FRESHWATER STREAM MILES
POPULATION: 1,354,000
BACKGROUND
TAR PAMILICO NUTRIENT TRADING BASINWIDE WATER QUALITY PLANS FORMATION OF THE LNBA 1995 FISH KILLS IN NEUSE ESTUARY
30% REDUCTION IN TOTAL NITROGEN TO ESTUARY - ADMINISTRATIVE RULE
POINT SOURCE TN 24% OF TOTAL INCLUDED POINT-SOURCE GROUP
COMPLIANCE OPTION POINT SOURCES CAN PURCHASE TN
ALLOCATION FROM WETLANDS RESTORATION - $11 PER LB x 200% x 30 YRS ~ $7 PER GAL. OF TREATMENT CAPACITY
EXPANDING PLANTS < 3.5 Mg/l TN
1997 NUTRIENT MANAGEMENTSTRATEGY
PHASE I TMDL – 1999: 30 % REDUCTION FROM 1995 NOT BASED ON CALIBRATED NUTRIENT RESPONSE MODEL. DID DIRECT FOCUS TO ESTUARY. BASIS OF CURRENT WASTELOAD ALLOCATIONS
PHASE II TMDL – 2001: 30% REDUCTION FROM 1995 BASED ON SEVERAL MODELS AND STUDIES GREATER TRANSPORT IN MAIN STEM INCREASED POINT SOURCE % TEMPORARY ALLOCATION – FINAL PENDING SPARROW MODEL RESULTS.
ADAPTIVE MANAGEMENT PROPOSED
TMDLS – ESTUARY TN
KEY ELEMENTS BEFORE BASINWIDE TN PERMIT
CONCEPT OF GROUP COMPLIANCE TAR-PAMILICO AGREEMENT – 1989
THE LOWER NEUSE BASIN ASSOC. GROUP WATER QUALITY MONITORING $2 MILLION STATE GRANT INTERNAL TN MONITORING SUCCESS AT REDUCING NITROGEN AT
MEMBER PLANTS
LOWER NEUSE BASIN ASSOCIATION MEMBERSANNUAL TOTAL NITROGEN DISCHARGE 1995 - 2001
0
500,000
1,000,000
1,500,000
2,000,000
2,500,000
3,000,000
3,500,000
1995 1996 1997 1998 1999 2000 2001
AN
NU
AL
PO
UN
DS
TO
TA
L N
ITR
OG
EN
LNBA TOTAL NITROGEN ALLOCATION
INDIVIDUAL NPDES PERMITS
PHOSPHORUS – 2 Mg/l QUARTERLY AVG AMMONIA – 2 Mg/l SUMMER; 4 Mg/l WINTER TOTAL NITROGEN – ANNUAL MASS
ALLOCATION LOWER LIMITS DUE TO LOCAL
CONDITIONS SAMPLING, MONITORING AND REPORTING
TOTAL NITROGEN
ESTUARY WASTELOAD ALLOCATION70% OF 1995 TN LOAD = 1.64 MILLION LBS
BASIS OF INDIVIDUAL ALLOCATIONS:SUM OF MUNICIPALS: 3.7 Mg/L @ PERMIT FLOW
+ SUM OF INDUSTRIALS: 3.15 Mg/l @ PERMIT FLOW+ SUM OF PLANTS < 0.5 MGD: 1995 + GROWTH
1.64 MILLION LBS
EQUITY /COST-EFFECTIVENESS
PERMIT FLOW vs 1995 ACTUAL FLOW TRANSPORT LOSS IN RIVER
UPPER BASIN DISCHARGER: 10 LBS TO RIVER; 1 POUND TRANSPORTED TO ESTUARY
MID BASIN: 10 LBS TO RIVER; 5 LBS TRANSPORTED TO ESTUARY
DISCHARGER AT ESTUARY: 10 LBS TO ESTUARY
SOME ADJUSTMENTS WERE MADE
INDIVIDUAL NPDES PERMITS
a. ANNUAL TN LOAD IS < ALLOCATION or b. PERMITTEE IS CO-PERMITTEE MEMBER
OF GROUP COMPLIANCE ASSOCIATION
IN COMPLIANCE WITH TN LIMIT IF:
GROUP COMPLIANCE PERMIT
CO-PERMITTEE MEMBERS, INDIVIDUALALLOCATION AND TRANSPORT FACTORSARE LISTED IN APPENDIX A
APPENDIX B LISTS ALL POINT SOURCEDISCHARGERS WITH TN ALLOCATION
SUM OF CO-PERMITTEES ESTUARY TN LOAD IS LESS THAN
ASSOCIATION ESTUARY TN ALLOCATION
CO-PERMITTEES, TRANSPORT FACTORS, AND TN ALLOCATIONS - NEUSE RIVER COMPLIANCE ASSOCIATION
Permit Permittee Facility Q95 TF Discharge TN Allocation Estuary TN Allocation
1 NC0064050 Town of Apex Middle Creek WWTP 3.6 50% 40,547 40,547 20,274 20,274
2 NC0020389 Town of Benson Benson WWTP 3 50% 33,790 33,790 16,895 16,895
3 NC0048879 Town of Cary North WWTP 12 50% 135,158 67,579 3 Town of Morrisville, formerly NC0050041 Morrisville WWTP 0.2 50% 4,044 2,022 3 Town of Morrisville, formerly NC0050938 Morrisville WTP 0.2 50% 4,044 2,022
3 Total 143,246 71,623 4 NC0065102 Town of Cary South WWTP 16 50% 180,211 180,211 90,105 90,105
5 NC0030716 Johnston County Central Johnston County WWTP 4.99 50% 56,203 28,102 5 NC0060330 Johnston County White Oak Plantation WWTP 0.5 50% 5,632 2,816 5 NC0064556 River Dell Utilities, Inc. Buffalo Creek WWTP 0.5 50% 5,632 2,816
5 Total 67,467 33,734
6 NC0025453 Town of Clayton Little Creek WWTP 1.9 50% 21,400 21,400 10,700 10,700 7 NC0032077 Contentnea Metropolitan Sewerage Dist. Contentnea Sewerage District WWTP 2.85 70% 32,100 32,100 22,470 22,470
8 NC0026824 NC DHHS Butner WWTP 3.5 10% 58,599 58,599 5,860 5,860
9 NC0029572 Town of Farmville Farmville WWTP 3.5 50% 39,421 19,711 9 Town of Walstonburg, formerly NC0020362 Walstonburg WWTP 0.138 50% 2,790 1,395
9 Total 42,211 21,106
10 NC0023949 City of Goldsboro Goldsboro WWTP 16.8 70% 189,221 132,455 10 Wayne County, formerly NC0030392 Genoa Industrial Park WWTP 0.4 70% 8,088 5,662 10 NC0048062 Town of Eureka Eureka Town- WWTP 0.04 50% 809 404
10 Total 198,118 138,521
11 NC0064891 Town of Kenly Kenly Regional WWTP 0.63 50% 7,096 7,096 3,548 3,548
12 NC0020541 City of Kinston Peachtree WWTP 6.75 70% 76,026 76,026 53,218 53,218
13 NC0024236 City of Kinston Northside WWTP 4.5 70% 50,684 50,684 35,479 35,479
14 NC0021644 Town of La Grange La Grange WWTP 0.75 70% 8,447 8,447 5,913 5,913
15 NC0025348 City of New Bern New Bern WWTP 4.7 100% 52,937 52,937 52,937 52,937
16 NC0029033 City of Raleigh Neuse River WWTP 60 50% 675,790 337,895 16 Bobby L. Murray Plantation Inn WWTP, formerly NC0027570 0.025 50% 506 253 16 Crosby Water and Sewer, Inc. Falls Village WWTP, formerly NC0046230 0.006 50% 121 61
16 Total 676,417 338,209
17 NC0030759 Town of Wake Forest Wake Forest WWTP 6 50% 67,579 67,579 33,790 33,790
GROUP COMPLIANCE PERMIT
CO-PERMITTEE IS IN COMPLIANCE WITHPERMIT IF:
A. THE ASSOCIATION IS WITHIN ITS ESTUARY ALLOCATION or
B. THE CO-PERMITTEE IS WITHIN ITS ESTUARY ALLOCATION
GROUP COMPLIANCE PERMIT
OFFSET PAYMENTS AND ENFORCEMENT:
A. IF THE ASSOCIATION EXCEEDS ITS ESTUARY ALLOCATION, OFFSET PAYMENT IS MADE TO WETLANDS RESTORATION FUND - $11 PER LB.
B. ADDITIONAL APPROPRIATE ENFORCEMENT ACTION CAN BE TAKEN FOR NON-COMPLIANCE
GROUP COMPLIANCE PERMIT
REPORTING REQUIREMENTS:• CO-PERMITTEE MONTHLY DMRs• GROUP COMPLIANCE MID-YEAR REPORT
• PAST YEAR - FOR INFORMATION ONLY• EACH CO-PERMITTEE ESTUARY LOAD• ASSOCIATION ESTUARY LOAD• CHANGES IN MEMBERSHIP OR TN FOR
NEXT CALENDAR YEAR• GROUP COMPLIANCE YEAR-END REPORT
GROUP COMPLIANCE PERMIT
REPORTING REQUIREMENTS:GROUP COMPLIANCE YEAR-END REPORT
• FOR CALENDAR YEAR• EACH CO-PERMITTEE ESTUARY LOAD• ASSOCIATION ESTUARY LOAD• CHANGES IN MEMBERSHIP• TRANSACTIONS AFFECTING ALLOCATIONS• ASSOCIATION TN CONTROL STRATEGY• PROGRESS AND PLANNED ACTIVITIES
OPERATION OF COMPLIANCE ASSOCIATION
A WORK IN PROGRESS BY-LAWS JUNE 2002 INITIAL POLICIES AND PROCEDURES –
JUNE 2003 INTERNAL INCENTIVES FUTURE TRADING
COSTS OF TN REDUCTION UNCERTAINTIES