EcoElectrica, L.P.
EcoElectrica, L.P.
NPDES NO. PR0025984
United States Environmental Protection Agency
Region 2
Water Division
290 Broadway
New York, New York 10007
FACT SHEET
DRAFT NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
EcoElectrica, L.P.
PERMIT No. PR0025984
This Fact Sheet sets forth the principle facts and technical rationale that serve as the legal basis for the
requirements of the accompanying draft permit. The draft permit has been prepared in accordance with Clean
Water Act (CWA) section 402 and its implementing regulations at Title 40 of the Code of Federal Regulations
(CFR), Parts 122 through 124, and the final Water Quality Certificate (WQC) issued by the Puerto Rico
Department of Natural and Environmental Resources (DNER) pursuant to CWA section 401 requirements.
Pursuant to 40 CFR 124.53, the Commonwealth of Puerto Rico must either grant a certification pursuant to CWA
section 401 or waive this certification before the U.S. Environmental Protection Agency (EPA) may issue a final
permit. On December 12, 2022, DNER provided in the WQC that the allowed discharge will not cause violations
to the applicable water quality standards at the receiving water body if the limitations and monitoring requirements
in the WQC are met. In accordance with CWA section 401, EPA has incorporated the conditions of the final WQC
into the draft permit. The WQC conditions are discussed in this Fact Sheet and are no less stringent than allowed
by federal requirements. Additional requirements might apply to comply with other sections of the CWA. Review
and appeals of limitations and conditions attributable to the WQC were made through the applicable procedures
of the Commonwealth of Puerto Rico and not through EPA procedures.
DNER issued a draft WQC for the facility on September 30, 2020. In a letter dated November 6, 2020 from Carlos
A. Reyes, EcoElectrica President & General Manager, to Angel R. Melendez Aguillar, DNER Water Quality
Manager, EcoElectrica submitted comments regarding sludge special conditions, and the effluent limitations for
arsenic, residual chlorine, sulfide, and no net additions. DNER issued a final WQC on May 11, 2021. EcoElectrica
appealed the final WQC in a Request for Adjudicative Procedure according to Section 5.4 of the Uniform
Procedures Law, dated June 2, 2021, in which the facility objected to the effluent limitation for residual chlorine,
as provided in the final WQC. After reviewing the hearing request and additional technical reports submitted by
the facility, DNER issued a draft WQC for EcoElectrica on October 6, 2020, and a final WQC on December 12,
2022.
PART I. BACKGROUND
A. Permittee and Facility Description
EcoElectrica, L.P. (referred to throughout as the Permittee) has applied for renewal of its National Pollutant
Discharge Elimination System (NPDES) permit. The Permittee is discharging pursuant to NPDES Permit No.
PR0025984. The Permittee submitted Application Form 1 and Form 2C dated November 27, 2018 and applied
for an NPDES permit to discharge treated wastewater from EcoElectrica, Penuelas, called the facility. The facility
is classified as a major discharger by EPA in accordance with the EPA rating criteria.
The Permittee owns and operates a Liquefied Natural Gas (LNG) cogeneration power plant consisting of: a LNG
marine unloading and storage terminal; a cogeneration plant with two combustion turbines; and, two heat
recovery steam generators in line with a steam turbine, a desalination plant and an auxiliary diesel generator.
Attachment A of this Fact Sheet provides a map of the area around the facility and a flow schematic of the facility.
The treatment system consists of the following: evaporation from cooling tower to remove heat from the
wastewater, neutralization, oil/water separation, and addition of materials to produce potable water.
Certain solid wastes will be generated by the facility, including sewage from sewage holding tanks, waste oil from
the oil/water separators, and chemical wastes from the neutralization tank. Any solid wastes generated by the
NPDES Fact Sheet 1
-------
EcoElectrica, L.P. NPDES NO. PR0025984
EcoElectrica, L.P.
Permittee must be hauled off-site by a licensed contractor and properly disposed. Disposal of these wastes to
Outfall 001 is prohibited.
Summary of Permittee and Facility Information
Permittee
EcoElectrica
Facility contact, title, phone
Eng. Oscar Cedeno, PE
Environmental and Fuels Manager
787-836-2740 ext 292 or 787-487-6042
Permittee (mailing) address
641 Road 337 Firm Delivery
Penuelas, PR 00624
Facility (location) address
State Road 337, Km 3.7
Penuelas, PR 00624
Type of facility
Electric Service - SIC Code 4911
Marine Cargo Handling - SIC Code 4491
Natural Gas Storage - SIC Code 4922
Water Supply - SIC Code 4941
Pretreatment program
N/A
Facility monthly average flow
8.97 MGD
Facility design flow
21.4 MGD
Facility classification
Major
B. Discharge Points and Receiving Water Information
Wastewater is discharged from Outfall 001 to the Guayanilla Bay (extension of the Caribbean Sea), a water of the
United States, in the Southern Puerto Rico watershed.
The draft permit authorizes the discharge from the following discharge point(s):
Outfall
Effluent description
Outfall
latitude
Outfall
longitude
Receiving
water name
and
classification
001
Cooling tower blowdown including:
Condenser cooling water blowdown
Heat recovery steam generator blowdown
Desalination plant brine blowdown
Rotary filters backwash
Remineralization filter backwash
Demineralizer wastewater
Laboratory drains
Wastewater from sample analysis
Waste from sample analysis equipment cleaning
Water from glassware cleaning
Tank and chemical container wash and cleaning wastewater
Chemical dike drains
Demineralization backwash
Streams from oils/water separators (that include treated streams
from plant drains, equipment drain lines and remineralizer drains)
17.00°,
58.00',
13.00" N
-66.00°,
45.00',
59.00" W
Guayanilla
Bay,
Class SB
NPDES Fact Sheet 2
-------
EcoElectrica, L.P. NPDES NO. PR0025984
EcoElectrica, L.P.
As indicated in the Puerto Rico Water Quality Standards (PRWQS) Regulations, the designated uses for Class
SB receiving waters include:
Coastal waters and estuarine waters intended for use in primary and secondary contact recreation, and for
propagation and maintenance of desirable species, including threatened or endangered species.
CWA section 303(d) requires the Commonwealth of Puerto Rico to develop a list of impaired waters, establish
priority rankings for waters on the list, and develop TMDLs for those waters. The receiving water has been
determined to have water quality impairments for one or more of the designated uses as determined by section
303(d) of the CWA. The Guayanilla Bay (PRSC38) is impaired for:
Copper,
Enterococcus,
Oil and grease,
Temperature,
Mercury,
Thallium, and
Turbidity,
No total maximum daily loads (TMDLs) have been developed for the receiving water.
C. Mixing Zone/Dilution Allowance
A mixing zone or dilution allowance has not been authorized for the discharger.
D. Compliance Orders/Consent Decrees
The Permittee does not have any compliance orders or consent decrees that affect this permit action.
E. Summary of Basis for Effluent Limitations and Permit Conditions - General
The effluent limitations and permit conditions in the permit have been developed to ensure compliance with the
following, as applicable:
NPDES regulations (40 CFR Part 122)
Puerto Rico Water Quality Standards (PRWQS), April 2019
Steam Electric Power Generating Effluent Guidelines (40 CFR Part 423)
PART II. RATIONALE FOR EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
CWA section 301(b) and 40 CFR 122.44(d) require that permits include limitations more stringent than applicable
technology-based requirements where necessary to achieve applicable water quality standards. In addition,
40 CFR 122.44(d)(1)(i) requires that permits include effluent limitations for all pollutants that are or may be
discharged at levels that cause, have the reasonable potential to cause, or contribute to an exceedance of a
water quality criterion, including a narrative criterion. The process for determining reasonable potential and
calculating water quality-based effluent limits (WQBELs) is intended to protect the designated uses of the
receiving water, and achieve applicable water quality criteria. Where reasonable potential has been established
for a pollutant, but there is no numeric criterion for the pollutant, WQBELs must be established using (1) EPA
criteria guidance under CWA section 304(a), supplemented where necessary by other relevant information; (2) an
indicator parameter for the pollutant of concern; or (3) a calculated numeric water quality criterion, such as a
proposed state criterion or policy interpreting the state's narrative criterion, supplemented with other relevant
information, as provided in 40 CFR 122.44(d)(1)(vi).
The effluent limitations and permit conditions in the permit have been developed to ensure compliance with all
federal and state regulations, including PRWQS. The basis for each limitation or condition is discussed below.
A. Effluent Limitations
The permit establishes Technology-based Effluent Limitations (TBELS) and Water Quality-based Effluent
Limitations (WQBELs) for several pollutants and the basis for these limitations are discussed below.
NPDES Fact Sheet 3
-------
EcoElectrica, L.P. NPDES NO. PR0025984
EcoElectrica, L.P.
1. Arsenic: A monitoring and reporting requirement has been established in the permit pursuant to the
WQC. Based on an analysis of the data, the discharge does not have the reasonable potential to cause
or contribute to an excursion above the WQS. There is no effluent limitation for arsenic.
2. 5-day Biochemical Oxygen Demand (BOD5): A monthly average effluent limitation of 30.0 mg/L for
BOD5 has been established in the permit pursuant to the WQC and Rule 1303.1(F) of the PRWQS.
3. Free Available Chlorine: A daily maximum effluent limitation of 0.5 mg/L and a monthly average effluent
limitation of 0.2 mg/L have been established in the permit pursuant to 40 CFR Part 423.
Neither free available nor total residual chlorine may be discharged from any unit for more than two hours
in any one day and not more than one unit in any plant may discharge free available or total residual
chlorine at any one time unless the utility can demonstrate to the Regional Administrator that the units in
a particular location cannot operate at or below this level or chlorination.
4. Residual Chlorine: A daily maximum effluent limitation of 20 ug/L has been established in the permit
pursuant to the WQC and Rule 1303.1 (J)(1) of the PRWQS.
Based on EPA's analysis of the DMR data, the discharge has the reasonable potential to cause or
contribute to an excursion above the WQS. However, as noted in the interim WQC, dated October 6,
2022, the facility requested an alternate effluent limitation for residual chlorine. DNER reviewed the
request and supporting data and determined that a daily maximum effluent limitation of 20 ug/L is
sufficient to protect water quality.
Additionally, 40 CFR Part 423 requires that neither free available nor total residual chlorine may be
discharged from any unit for more than two hours in any one day and not more than one unit in any plant
may discharge free available or total residual chlorine at any one time unless the utility can demonstrate
to the Regional Administrator that the units in a particular location cannot operate at or below this level or
chlorination.
5. Chromium, total: A daily maximum effluent limitation 0.2 mg/L and a monthly average effluent limitation
of 0.2 mg/L has been established in the permit pursuant to 40 CFR Part 423. Based on an analysis of the
data, the discharge does not have the reasonable potential to cause or contribute to an excursion above
the WQS.
6. Color. A narrative effluent limitation for color has been established in the permit pursuant to the WQC
and Rule 1303.2 of the PRWQS.
7. Copper: A daily maximum effluent limitation of 3.73 ug/L has been established in the permit pursuant to
the WQC and Rule 1303.1 (J)(1) of the PRWQS. 40 CFR Part 423 also requires a daily maximum TBEL of
0.1 mg/L and a monthly average of 0.1 mg/L for copper. Based on an analysis of the data, the discharge
has the reasonable potential to cause or contribute to an excursion above the WQS and therefore, a limit
must be established in the permit. As the daily maximum TBEL is less stringent than the daily maximum
WQBEL so the daily maximum WQBEL has been established in the permit. The monthly average TBEL
has also been established in the permit.
8. Cyanide: A daily maximum effluent limitation of 1.0 ug/L has been established in the permit pursuant to
the WQC and Rule 1303.1 (J)(1) of the PRWQS. Based on an analysis of the data, the discharge has the
reasonable potential to cause or contribute to an excursion above the WQS and therefore, a limit must be
established in the permit.
The samples taken for the analysis of free cyanide shall be analyzed using the analytical method
approved by EPA with the lowest detection level, in accordance with Rule 1306.8 of the PRWQS.
9. Dissolved Oxygen: A monthly average effluent limitation of not less than 5.0 mg/L has been established
in the permit pursuant to the WQC and Rule 1303.2(B)(2)(a) of the PRWQS.
10. Flow: A daily maximum flow limitation of 81,007 m3/day (21.4 MGD) has been established in the permit
pursuant to the WQC.
The flow measuring device for Outfall 001 shall be periodically calibrated and properly maintained.
Calibration and maintenance records must be kept in compliance with Rule 1301 and Rule 1306 of the
PRWQS and with the Environmental Public Policy Act of September 22, 2004, Act No. 416.
11. Iron. A daily maximum effluent limitation of 1.0 mg/L and a monthly average effluent limitation of 1.0 mg/L
for iron has been established in the permit pursuant to 40 CFR Part 423.
NPDES Fact Sheet 4
-------
EcoElectrica, L.P. NPDES NO. PR0025984
EcoElectrica, L.P.
12. Mercury. A daily maximum effluent limit of 0.051 ug/L has been established in the permit pursuant to the
WQC and Rule 1303.1 (J)(1) of the PRWQS. Based on an analysis of the data, the discharge has the
reasonable potential to cause or contribute to an excursion above the WQS and therefore, a limit must be
established in the permit.
13. Oil and Grease. A daily maximum effluent limitation of 20.0 mg/L and a 30-day average effluent limitation
of 15.0 mg/L has been established in the permit pursuant to 40 CFR Part 423. Based on an analysis of
the data, the discharge does not have the reasonable potential to cause or contribute to an excursion
above the WQS.
14. pH: A effluent limit of between 7.3 and 8.5 SU has been established in the permit pursuant to the WQC
and Rule 1303.2(B)(2)(d) of the PRWQS. Based on an analysis of the data, the discharge has the
reasonable potential to cause or contribute to an excursion above the WQS and therefore, a limit must be
established in the permit.
15. Polychlorinated biphenyl compounds (PCBs): An effluent limitation prohibiting the discharge of PCBs
has been established in the permit pursuant to 40 CFR Part 423.
16. Suspended, Colloidal and Settleable Solids. A narrative effluent limitation for color has been
established in the permit pursuant to the WQC and Rule 1303.1 of the PRWQS.
17. Sulfides: Based on EPA R2's Reasonable Potential Tool analysis of the data, the discharge has the
reasonable potential to cause or contribute to an excursion above the WQS. However, a closer look at the
data shows that all results are non-detects or are below the method detection level. R2's RP Tool cannot
properly analyze non-detects and will provide a false positive RP result. No effluent limit is required in the
permit but monitoring is required.
18. Surfactants. Based on an analysis of the data, the discharge does not have the reasonable potential to
cause or contribute to an excursion above the WQS and therefore, no limit is established in the permit.
19. Temperature: Rule 1301.1 of the PRWQS states that, except by natural phenomena, no heat which
would cause the temperature of any site to exceed 86°F or 30°C, may be added to the waters of Puerto
Rico. Based on an analysis of the data, the discharge has the reasonable potential to cause or contribute
to an excursion above the WQS and therefore, a limit must be established in the permit.
In a letter to PR DNER dated January 30, 2020, the Permittee requested an alternate limit for
temperature for Outfall 001 based on a technical support document that included a Water Quality
Monitoring Program Temperature Data Assessment, Thermal Plume Study, and Biological Monitoring
Studies. As such, an effluent limit stating that the temperature shall not exceed 90°F (33.2°C) (or shall not
exceed the intake water by more than 1,8°F (1 °C)) has been established in the permit pursuant to the
WQC.
20. Temperature Difference between Intake Water and the Discharge: An effluent limitation for the
temperature difference between the intake water and the discharge has been established in the permit
pursuant to the WQC. The Permittee is required to comply with the temperature effluent limitation OR the
temperature difference effluent limitation.
21. Total Suspended Solids: A daily maximum effluent limitation of 100.0 mg/L and a 30-day average
effluent limitation of 30.0 mg/L has been established in the permit pursuant to 40 CFR Part 423. Based
on an analysis of the data, the discharge has the reasonable potential to cause or contribute to an
excursion above the WQS and therefore, a limit must be established in the permit.
22. Turbidity. A daily maximum effluent limitation of 10 NTU has been established in the permit pursuant to
the WQC and Rulel 303.2 of the PRWQS. Based on an analysis of the data, the discharge does not have
the reasonable potential to cause or contribute to an excursion above the WQS.
23. Whole Effluent Toxicity. CWA section 101(a) establishes a national policy of restoring and maintaining
the chemical, physical, and biological integrity of the nation's waters. Specifically, CWA section 101(a)(3)
and PRWQS Rule 1303(1) prohibit the discharge of toxic pollutants in toxic amounts. Federal regulations
at 40 CFR 122.44(d) also require that where the permitting authority determines, through the analysis of
site-specific WET data, that a discharge causes, shows a reasonable potential to cause, or contributes to
an excursion above a water quality standard, including a narrative water quality criterion, the permitting
authority must establish effluent limits for WET. To satisfy the requirements of the CWA, its implementing
regulations, and the PRWQS, a reasonable potential analysis for WET was conducted for this discharge.
NPDES Fact Sheet 5
-------
EcoElectrica, L.P. NPDES NO. PR0025984
EcoElectrica, L.P.
PRWQS do not provide a numeric criterion for toxicity. Therefore, consistent with the recommendations of
section 2.3.3 of EPA's Technical Support Document (TSD) for Water Quality-Based Toxics Control (EPA-
505-2-90-001), values of 0.3 acute toxic unit (TUa) and 1.0 chronic toxic unit (TUC) were used to interpret
the narrative water quality criteria for WET established in PRWQS Rule 1303(1). No numeric effluent
limitations for WET have been established in the permit. However, the facility may be required to conduct
semi-annual acute toxicity tests for a period of 1 year, after which tests shall be performed annually.
Based on the results, EPA or PR DNER can require additional toxicity tests, including chronic tests and
toxicity/treatability studies, and may impose toxicity limitations.
In addition, the permit establishes a requirement for the Permittee to conduct accelerated testing a
develop a Toxicity Reduction Evaluation (TRE) Workplan as Special Conditions. These requirements are
necessary to ensure that the Permittee has a process for addressing effluent toxicity if toxicity is
observed.
24. Zinc: A daily maximum effluent limitation of 81.0 ug/L has been established in the permit pursuant EPA's
Antibacksliding regulations. Pursuant to the WQC and Rule 1303.1 of the PRWQS, a daily maximum
effluent limitation of 85.62 ug/l is sufficient to meet water quality standards but the antibacksliding
regulations require that the existing, more-stringent effluent limit of 8.10 ug/l be maintained in the permit.
Based on an analysis of the data, the discharge does not have the reasonable potential to cause or
contribute to an excursion above the WQS.
25. 126 Priority Pollutants. An effluent limitation prohibiting detectable amounts of any of the 126 priority
pollutants has been established in the permit pursuant to 40 CFR Part 423.
B. Effluent Limitations Summary Table
1. Outfall Number 001
Parameter
Units
Effluent limitations
Averaging
period
Highest
Reported
Value *
Existing
limits
Interim
limits
Final
limits
Basis
Arsenic (As)
ug/L
Daily maximum
9.0
M/R
-
M/R
WQBEL
BOD5
mg/L
Monthly average
7.1
30.0
-
30.0
WQBEL
Free Available Chlorine
mg/L
Maximum
Average
-
-
-
LO CM
o o
TBEL
Residual Chlorine
ug/L
Maximum
90
200
-
20
WQBEL
Chromium, total
mg/L
Daily maximum
Monthly average
0.04
CM CM
o o
-
CM CM
o o
TBEL
Color
Pt-Co
Daily maximum
15
Shall not be
altered
except by
natural
causes
-
Shall not be
altered
except by
natural
causes
WQBEL
Copper
ug/L
mg/L
Daily maximum
Monthly average
3.1
3.73
-
3.73
1.0
WQBEL
TBEL
Cyanide
ug/L
Daily maximum
5.0
1.0
-
1.0
WQBEL
Dissolved Oxygen
mg/L
Monthly average
4.6 (minimum
reported
value)
Shall not be
less than 4.0
-
Shall not be
less than 5.0
WQBEL
Flow
m3/day
MGD
Daily maximum
19.62
81,007
21.4
-
81,007
21.4
WQBEL
NPDES Fact Sheet 6
-------
EcoElectrica, L.P. NPDES NO. PR0025984
EcoElectrica, L.P.
Parameter
Units
Effluent limitations
Averaging
period
Highest
Reported
Value *
Existing
limits
Interim
limits
Final
limits
Basis
Iron
mg/L
Daily maximum
Monthly average
-
-
1.0
1.0
TBEL
Mercury (Hg)
ug/L
Daily maximum
0.05
0.051
-
0.051
Oil and Grease
mg/L
Daily maximum
Monthly average
12.0
20.0
15.0
-
20.0
15.0
TBEL
pH
SU
Monthly average
9.17 (max)
8.22 (min)
Wthin the
range of 7.3
and 8.5
-
Wll lie
between 7.3
and 8.5,
except when
altered by
natural
phenomena
WQBEL
PCBs
mg/L
Daily maximum
0.0014
-
-
No discharge
TBEL
Sulfides
ug/L
Daily maximum
4.0
M/R
-
2.0
WQBEL
Surfactants (as MBAS)
ug/L
Daily maximum
42
M/R
-
-
WQBEL
Temperature
°F
°C
Instantaneous
33.1
90.0
32.2
-
90.0
32.2
WQBEL
Temperature Difference
between Intake Water and
the Discharge
°F
°C
Instantaneous
-
-
-
1.8
1
WQBEL
Total Suspended Solids
mg/L
Daily maximum
Monthly average
101.0
52.4
100.0
30.0
100.0
30.0
TBEL
Turbidity
NTU
Daily maximum
5.68
10.0
-
10.0
WQBEL
Whole Effluent Toxicity,
Acute
TUa
(minimum
%LC50)
Daily maximum
>100%LC50
(minimum
reported
value)
-
-
-
WQBEL
Zinc
ug/L
Daily maximum
44.0
81.0
-
81.0
WQBEL
126 Priority Pollutants
-
-
-
No detectable
amounts
-
No detectable
amounts
TBEL
Notes. Footnotes and Abbreviations
~ - Wastewater data from DMRs dated December 20, 2017 to December 20, 2022.
Dashes (--) indicate there are no effluent data, no limitations, or no monitoring requirements for this parameter.
M/R indicates that monitoring and reporting is required.
2. Outfall Number 001 Narrative Limitations
a. Color. The color receiving water shall not be altered except by natural causes, as specified by Rule
1303.2 of the PRWQS and the WQC. Based on an analysis of the data, the discharge does not have
the reasonable potential to cause or contribute to an excursion above the WQS
b. Color, Odor, Taste and Turbidity. The waters of Puerto Rico shall be free from color, odor, taste
and turbidity attributable to discharges in such a degree as to create a nuisance to the enjoyment of
the existing or designated uses of the water body, as specified in Rule 1303.1 of the PRWQS and the
WQC.
NPDES Fact Sheet
-------
EcoElectrica, L.P. NPDES NO. PR0025984
EcoElectrica, L.P.
c. Other Pathogenic Organisms. With the exception of coliforms and enterococci for which a water
quality standard has been established in Rule 1302.2 of the PRWQS, the waters of Puerto Rico shall
not contain other pathogenic organisms in concentrations which may cause disease, as specified in
Rule 1303.1 of the PRWQS.
d. Oil and Grease. The waters of Puerto Rico shall be substantially free from floating petroleum oils and
greases as well as petroleum derived oils and greases, as specified by Rule 1303.1 of the PRWQS.
e. Solids and Other Matter. The waters of Puerto Rico shall not contain floating debris, scum, or other
floating materials attributable to discharges in amounts sufficient to be unsightly or deleterious to the
existing or designated uses of the water body, as specified in Rule 1303.1 of the PRWQS and the
WQC.
f. Substances in Toxic Concentrations and Synergistic Toxic Effects.
i. The waters of Puerto Rico shall not contain any substance, attributable to the discharge at such
concentration which, either alone or as a result of synergistic effects with other substances, is
toxic or produces undesirable physiological responses in humans, fish, or other fauna or flora, as
specified in Rule 1303.1 of the PRWQS and the WQC.
ii. No toxic substances shall be discharged, in toxic concentrations, other than those allowed as
specified in the NPDES permit. Those toxic substances included in the permit renewal
application, but not regulated by the NPDES permit, shall not exceed the concentrations specified
in the applicable regulatory limitations, as specified in 40 CFR Part 423 and Rule 1301, 1303, and
1306 of the PRWQS.
g. Suspended, Colloidal or Settleable Solids. Solids from wastewater sources shall not cause
deposition in or be deleterious to the existing or designated uses of the waters, as specified in Rule
1303.1 of the PRWQS and the WQC.
h. Taste and Odor-Producing Substances. Tastes and odor-producing substances shall not be
present in amounts that will interfere with primary contact recreation, or will render any undesirable
taste or odor to edible aquatic life, as specified in Rule 1303.2 of the PRWQS and the WQC.
C. Monitoring Requirements
NPDES regulations at 40 CFR 122.48 require that all permits specify requirements for recording and reporting
monitoring results. The Part III of the Permit establishes monitoring and reporting requirements to implement
federal and state requirements. The following provides the rationale for the monitoring and reporting requirements
for this facility.
1. Influent Monitoring Requirements
Influent monitoring is required for temperature in order to determine the change in temperature between
the intake water and the discharge.
2. Effluent Monitoring Requirements
Effluent monitoring frequency and sample type have been established in accordance with the
requirements of 40 CFR 122.44(i) and recommendations in EPA's TSD. Consistent with 40 CFR Part 136
monitoring data for toxic metals must be expressed as total recoverable metal. Effluent monitoring and
analyses shall be conducted in accordance with EPA test procedures approved under 40 CFR Part 136,
Guidelines for Establishing Test Procedures for the Analysis of Pollutants Under the Clean Water Act, as
amended. For situation where there may be interference, refer to Solutions to Analytical Chemistry
Problems with Clean Water Act Methods (EPA 821-R-07-002). A licensed chemist authorized to practice
the profession in Puerto Rico shall certify all chemical analyses. All bacteriological tests shall be certified
by a microbiologist or licensed medical technologist authorized to practice the profession in Puerto Rico.
D. Compliance with Federal Anti-Backsliding Requirements and Puerto Rico's Anti-Degradation Policy
Federal regulations at 40 CFR 131.12 require that state water quality standards include an anti-degradation policy
consistent with the federal policy. The discharge is consistent with the anti-degradation provision of 40 CFR
NPDES Fact Sheet 8
-------
EcoElectrica, L.P. NPDES NO. PR0025984
EcoElectrica, L.P.
131.12, 72 Federal Register 238 (December 12, 2007, pages 70517-70526) and EQB's Anti-Degradation Policy
Implementation Procedure in Attachment A of PRWQS. In addition, CWA sections 402(o)(2) and 303(d)(4) and
federal regulations at 40 CFR 122.44(1) prohibit backsliding in NPDES permits. Further, the Region 2
Antibacksliding Policy provides guidance regarding relaxation of effluent limitations based on water quality for
Puerto Rico NPDES permits. These anti-backsliding provisions require effluent limitations in a reissued permit to
be as stringent as those in the previous permit with some exceptions where limitations may be relaxed. All effluent
limitations in the permit are at least as stringent as the effluent limitations in the existing permit.
PART III. RATIONALE FOR STANDARD AND SPECIAL CONDITIONS
A. Standard Conditions
In accordance with 40 CFR 122.41, standard conditions that apply to all NPDES permits have been incorporated
by reference in Part IV.A.1 of the permit and expressly in Attachment B of the permit. The Permittee must comply
with all standard conditions and with those additional conditions that are applicable to specified categories of
permits under 40 CFR 122.42 and specified in Part IV.A.2 of the Permit.
B. Special Conditions
In accordance with 40 CFR 122.42 and other regulations cited below, special conditions have been incorporated
into the permit. This section addresses the justification for special studies, additional monitoring requirements,
Best Management Practices, Compliance Schedules, and/or special provisions for POTWs as needed. The
special conditions for this facility are as follows:
1. Special Conditions from the Water Quality Certificate
a. No changes in the design or capacity of the treatment system will be permitted without the
previous authorization of the DNER.
b. Prior to the construction of any additional treatment system or the modification of the existing one,
the permittee shall obtain the approval from the DNER of the engineering report, plans and
specifications.
c. The permittee shall install, maintain and operate all water pollution control equipment in such
manner as to be in compliance with the Applicable Rules and Regulations.
d. The sampling point for discharge 001 shall be labeled with an 18 inches per 12 inches (minimum
dimensions) sign that reads as follows: "Punto de Muestreo para la Descarqa 001"
e. All water and wastewater treatment facilities, whether publicly or privately owned, must be
operated by a person licensed by the Examination Board of Water and Wastewater Treatment
Plants Operators of Puerto Rico.
f. No later than one hundred eighty (180) days after the Effective Date of this Special Condition
(EDSC), the permittee shall conduct semiannually acute toxicity tests for a period of one (1) year,
after which the tests shall be performed annually, of its wastewater discharge through outfall
serial number 001 in accordance with the following:
i. The test species should be silverside (Menidia beryllina) and mysid (Mysidopsis bahia).
The tests should be static renewal type.
ii. The toxicity tests shall be conducted in accordance with the EPA publication, EPA 821-R-
02-012 Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to
Freshwater and Marine Organisms (Fifth Edition), October 2002, or the most recent
edition of this publication if such edition is available.
iii. The tests shall provide a measure of the acute toxicity as determined by the wastewater
concentration, which cause 50 percent mortality of the test organisms over a 48-hour
NPDES Fact Sheet
-------
EcoElectrica, L.P. NPDES NO. PR0025984
EcoElectrica, L.P.
period. The test results shall be expressed in terms of Lethal Concentration (LC) and
reported as 48-hour LC50.
iv. A procedure report shall be submitted within ninety (90) days after the EDSC. The
following information shall be included in the procedure report:
1. An identification of the organization responsible for conducting the tests and the
species to be tested.
2. A detailed description of the methodology to be utilized in the conduct of the
tests, including equipment, sample collection, dilution water and source of test
organisms.
3. A schematic diagram, which depicts the effluent sampling location in relation to
the wastewater treatment facility and the discharge monitoring point.
g. The results of the tests conducted shall be submitted to the Clean Water Regulatory Branch,
Water Division of EPA's Region 2 and the DNER's Water Quality Area, within sixty (60) days of
completion of each test. Based on the review of the test results, the Regional Administrator of
EPA or the DNER can require additional toxicity tests, including chronic and toxicity/treatability
studies, and may impose toxicity limitation.
2. Whole Effluent Toxicity (from the WQC)
EPA Note: This is the Special Condition as included by the Puerto Rico DNER in the WQC. These
requirements for Whole Effluent Toxicity monitoring are included in Section IV(B)(2) of the permit.
This special condition shall not become effective until the DNER has determined the applicability to the
respective facility and has notified the Permittee and EPA, in writing, of the necessity to comply with this
condition.
No later than one hundred eighty (180) days after the Effective Date of this Special Condition (EDSC), the
Permittee shall conduct semiannually acute toxicity tests for a period of one (1) year, after which tests
shall be performed annually, of its wastewater discharge through Outfall 001 in accordance with the
following:
a. The test species should be silverside (Menidia bervllina) and mysid (Mvsidopsis bahia). The tests
should be static renewal type.
b. The toxicity tests shall be conducted in accordance with the EPA publication, EPA 821-R-02-012
Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and
Marine Organisms (Fifth Edition), October 2002, or the most recent edition of this publication, if such
edition is available.
c. The tests shall provide a measure of the acute toxicity as determined by the wastewater
concentration, which cause 50 percent mortality of the test organisms over a 48-hour period. The test
results shall be expressed in terms of Lethal Concentration (LC) and reported as 48-hour LCso.
d. A procedure report shall be submitted within ninety (90) days after the EDSC. The following
information shall be included in the procedure report:
i. An identification of the organizations responsible for conducting the tests and the species
tested.
ii. A detailed description of the methodology to be utilized in the conduct of the tests,
including equipment, sample collection, dilution water and source test organisms.
iii. A schematic diagram, which depicts the effluent sampling location in relation to the
wastewater treatment facility and the discharge monitoring point.
e. The results of the tests conducted shall be submitted to the Multimedia Permits and Compliance
Branch of EPA's Region 2 Caribbean Environmental Protection Division and the DNER's Water
Quality Area, within sixty (60) days of completion of each test. Based on the review of the test results,
NPDES Fact Sheet 10
-------
EcoElectrica, L.P. NPDES NO. PR0025984
EcoElectrica, L.P.
the Regional Administrator of EPA of the DNER can require additional toxicity tests, including chronic
tests and toxicity/treatability studies, and may impose toxicity limitations.
3. Best Management Practices (BMP) Plan
In accordance with 40 CFR 122.2 and 122.44(k), BMPs are schedules of activities, prohibitions of
practices, maintenance procedures, and other management practices to prevent or reduce the pollution to
waters of the United States. The Permittee is required to develop a BMP Plan in Part IV.B.3.a of the
permit to control or abate the discharge of pollutants.
4. Compliance Schedules
A compliance schedule has not been authorized for any pollutant or parameter in the permit on the basis
of 40 CFR 122.47.
5. Solid Waste Requirements (from the WQC)
a. Disposed in compliance with the applicable requirements established in the 40 CFR Part 257. A
report must be submitted to DNER and EPA notifying the method or methods used to dispose the
solid wastes generated in the facility in a term no later than thirty (30) days after such solids are
generated. Also, a copy of the approval or permit applicable to the disposal method used must be
submitted, if any.
b. Transported adequately in such way that access is not gained to any water body or soil. In the event
of a spill of solid wastes on land or into a water body, the permittee must notify the Point Sources
Permits Division of DNER's Water Quality Area in writing within a term no longer than twenty-four (24)
hours after the spill to the following electronic address: bypass@drna.pr.gov. This notification shall
include the following information: spilled material, spilled volume, and measures taken to prevent the
spilled material to gain access to any water body. This special condition does not relieve the
Permittee from its responsibility to obtain the corresponding permits from DNER's Land Pollution
Control Area and other state and federal agencies, if any.
c. A log book must be kept for the material removed from the treatment system, such as sludge,
screenings and grit, detailing the following items:
(i) description of removed material, date of removal, and source of material;
(ii) approximate volume and weight of material;
(iii) method by which material was removed and transported;
(iv) final disposal and location of material;
(v) name, title and affiliation of person that performs the service;
A copy of the Non-Hazardous Solid Wastes Collection and Transportation Service Permit issued by
the authorized official from DNER must be attached to the log book. The material removal log book
must remain on-site and be available to DNER and EPA at all times.
6. Clean Water Act Section 316(b)
It is EPA's Best Professional Judgement (BPJ) that the Permittee has demonstrated that entrainment and
impingement impacts at the facility are minimal. The existing location, design, construction, and cooling
water intake structure reflect the best available technology for minimizing adverse impacts, and as such are
in compliance with CWA Section 316(b).
The Cooling Water Intake Structure includes a passive filtration system consisting of 2 mm (0.079") slot
opening screens, with 53% open area. There is an air backwash system for remote cleaning of the screens.
The design intake velocity of the cooling water intake structure is 0.5 feet per second. The facility also
utilizes a closed cycle cooling system, which keeps the intake flow below the permit limit of 21.4 MGD.
EPA Region 2 has made a final determination that the best technology available for minimizing adverse
environmental impact due to impingement or entrainment at the cooling water intake structure is the
continued operation of the existing screen technology, closed cycle cooling system, and design intake flow
described above. These technologies comply with the EPA 2014 Final Rulemaking for Cooling Water Intake
Structures at Existing Electric Generating Plants and Factories.
NPDES Fact Sheet 11
-------
EcoElectrica, L.P. NPDES NO. PR0025984
EcoElectrica, L.P.
PART IV. COMPLIANCE WITH APPLICABLE PROVISIONS OF OTHER FEDERAL LAWS OR
EXECUTIVE ORDERS
A. Coastal Zone Management Act
Under 40 CFR 122.49(d), and in accordance with the Coastal Zone Management Act of 1972, as amended,
16 United States Code (U.S.C.) 1451 etseq. section 307(c) of the act and its implementing regulations (15 CFR
Part 930), EPA may not issue an NPDES permit that affects land or water use in the coastal zone until the
Permittee certifies that the proposed activity complies with the Coastal Zone Management Program in Puerto
Rico, and that the discharge is certified by the Commonwealth of Puerto Rico to be consistent with the
Commonwealth's Coastal Zone Management Program. The Puerto Rico Planning Board issued a determination,
dated December 16, 1996, that the discharge is consistent with the Puerto Rico Coastal Management Program.
As this activity has been permitted in the a past, a reopener clause has been established that allows the permit to
be modified or revoked based on the consistency determination requested by the Permittee as part of this
renewal process. The permittee submitted the request for consistency determination in a letter to the Puerto Rico
Planning Board dated June 5, 2023.
B. Endangered Species Act
Under 40 CFR 122.49(c), EPA is required pursuant to section 7 of the Endangered Species Act (ESA), 16 U.S.C.
1531 etseq. and its implementing regulations (50 CFR Part 402) to ensure, in consultation with the National
Marine Fisheries Service (NMFS) and U.S. Fish and Wildlife Service (USFWS) that the discharge authorized by
the permit is not likely to jeopardize the continued existence of any endangered or threatened species or
adversely affect its critical habitat.
The ESA requires the Regional Administrator to ensure, in consultation with the Secretary of the Interior or
Commerce, that any action authorized by EPA is not likely to jeopardize the continued existence of any
endangered or threatened species or adversely affect its critical habitat.
EPA initiated consultation regarding this permit action on June 1, 2023.
In a May 2000 memo to the Regions, EPA Headquarters provided guidance to the Regions in making a
determination as to whether a final permit may be issued while waiting for consultation to be concluded. As part of
this permit action, if consultation has not been completed by final permit issuance and EPA has concluded that
permit issuance is consistent with section 7 prior to the conclusion of consultation, EPA will re-issue the final
permit before consultation is concluded and will document this decision in the Administrative Record. At the time
consultation is completed, EPA may decide that changes to the permit are warranted after permit issuance based
on the results of the consultation. Therefore, a reopener provision to this effect has been included in the Permit
Part IV.A.1 .b.
C. Environmental Justice
Environmental Justice (EJ) is the right to a safe, healthy, productive, and sustainable environment for all, where
"environment" is considered in its totality to include the ecological, physical, social, political, aesthetic and
economic environments. The NPDES permitting process provides opportunities to address EJ concerns through
appropriate avenues for public participation, seeking out and facilitating involvement of those potentially affected,
and, when relevant, including public notices in more than one language where appropriate. EPA has extended
the public participation timeframe from the traditional 30 days to 60 days, and has created a one-page plain
language summary of this permitting action, which includes clear instructions on how the public may participate in
the permitting process.
D. Climate Change
EPA has considered climate change when developing the conditions of the permit. This draft permit requires new
conditions related to the Permittee's Preventative Maintenance Plan. Specifically, the Permittee shall implement
structural improvements, enhanced/resilient pollution prevention measures, and/or other mitigation measures to
minimize impacts from discharges as a result of major storm events, such as hurricanes, storm surge,
extreme/heavy precipitation, and flood events.
E. National Historic Preservation Act
Under 40 CFR 122.49(b), EPA is required to assess the impact of the discharge authorized by the permit on any
properties listed or eligible for listing in the National Register of Historic Places (NRHP) and mitigate any adverse
effects when necessary in accordance with the National Historic Preservation Act, 16 U.S.C. 470 et seq. EPA's
NPDES Fact Sheet 12
-------
EcoElectrica, L.P. NPDES NO. PR0025984
EcoElectrica, L.P.
analysis indicates that no soil disturbing or construction-related activities are being authorized by approval of this
permit; accordingly, adverse effects to resources on or eligible for inclusion in the NHRP are not anticipated as
part of this permitted action.
F. Magnuson-Stevens Fishery Conservation and Management Act
Under 40 CFR 122.49, EPA is required to ensure that the discharge authorized by the permit will not adversely
affect Essential Fish Habitat (EFH) as specified in section 305(b)(2) of the Magnuson-Stevens Fishery
Conservation and Management Act (MSFCMA), 16 U.S.C. 1801 et seq. EPA initiated consultation with the
National Marine Fisheries Service regarding this permit action on June 1, 2023. A reopener provision has been
included in the draft permit which allows EPA to modify or revoke the permit based on new information.
G. Clean Water Act, Section 403 Ocean Discharge Criteria
CWA Section 403 requires EPA to consider guidelines for determining potential degradation of the marine
environment when issuing NPDES permits. These Ocean Discharge Criteria (40 CFR 125, Subpart M) are
intended to "prevent unreasonable degradation of the marine environment and to authorize imposition of effluent
limitations, including a prohibition on discharge, if necessary, to ensure this goal". Based on the available
information, EPA has determined that the discharge will not cause unreasonable degradation of the marine
environment. A reopener provision has been included in the permit Part IV.B.5 that provides EPA the right to
modify or revoke the permit based on any new data.
H. Clean Water Act, Section 316(b) Cooling Water Intake Structures
CWA Section 316(b) requires EPA to issue regulations on the design and operation of intake structures, in order
to minimize adverse impacts. It is EPA's Best Professional Judgement (BPJ) that the Permittee has demonstrated
that entrainment and impingement impacts at the facility are minimal. The existing location, design, construction
and cooling water intake structure reflect the best available technology for minimizing adverse impact, and as
such are in compliance with CWA Section 316(b).
Best Technology Available for this facility will be the continued operation of the closed-cycle cooling towers,
continued operation of the wedgewire screen at the cooling water intake structure, and continued minimization of
intake velocity.
PARTV. PUBLIC PARTICIPATION
The procedures for reaching a final decision on the draft permit are set forth in 40 CFR Part 124 and are
described in the public notice for the draft permit, which is published on EPA's website at
https://www.epa.gov/npdes-permits/puerto-rico-npdes-permits. Included in the public notice are requirements for
the submission of comments by a specified date, procedures for requesting a hearing and the nature of the
hearing, and other procedures for participation in the final agency decision. EPA will consider and respond in
writing to all significant comments received during the public comment period in reaching a final decision on the
draft permit. Requests for information or questions regarding the draft permit should be directed to
Ms. Sieglinde Pylypchuk
EPA Region 2, Water Division
212-637-4133
pylypchuk.sieglinde@epa.gov
NPDES Fact Sheet 13
-------
EcoElectrica, LP.
EcoElectrica, L P.
NPDES NO. PR0025984
ATTACHMENT A FACILITY FLOW SCHEMATIC
The flow schematic is attached as provided by the discharger in the application.
£
>
r
3
-c
t-
o
O ,
III
a>
a)
!§
X LU
Q- X
is
E to
I i
C 5
c
O
8
CO
© _
as
n; O
CTI
c
ur
j :
< N
E
_J 5
o g
CO
O to
o §
I- T-
&
zooajasMi-
mo|J too lieflno
| ~ 5"
a
INdOOOW |
o
o
O
s
ij
CO
. <75
CTI
u CD
© oo
- o >s
eo
ro
S o
3 o
O £
lOOldOM/VU
}U3U13|3 M0|J |GUJO}U|
EH
)u»|iuudui|
INdO ooe
I
It-
's E
CO
O co
a> A
a. t>
a> (2
x a
E
a>
e»JE
J; _i
- £<
6 o O
Is"
n> JS
u> <0
0
li
if.
-%
I s
UMOpiViOIQ JSAWX SuilOOO
M
Nd9 0St'9n
UM0pM0J|8 JBJEM
6uj|ooo 03uepuoo "E
I]
,Li ,
2 £
c 5
K o
. o
a> h-
j
'!
ll
ID O
51
? £
o $
I
! £ U
8
o
c
c
a
CO
rr
x
1U31IU-U5J J| WdO 009 I
UMOpVOtg JDliy /JB?0y IGUjUUOi. P
£
a.
o
3A|BA
M»MO
« O
I §
II
CO rt
Ol §
e?
ra
lOOldVAM/U
3uqlusi3 Aioy |eiua)U|
fl>
;us;|auaju|
KldOOSC
«i o
10 is
5 -
o 5
o E
8 |
E= C
* t
5 cr
Q. LL!
S a> s
oil
ca Q
I o<
I (SO,
h a§
E M r--
"1
i r
¦i
o5 o <
I ' to ro O
!ja
Wd9 08E E
UAsopMO|q auug sjmn uoijeiJi|BsaQ 3
A
-i o
1 8
ja3uEi)3*;i
WdO DOf 'f
»«U
Ajejoy
loaaxas/vu
J8JJILUSUBJ1
ajniEJSduiai
' « =
«nun
~ li0l}BU!|8SQa
01
si
a3 £
I E
? Q.
c P"
¦i 115
¦o 5>
^ £
o ^ 8
s 2 £
CO
8
fl
E |
i I
O r/)
tt> O
O to
I
III
S8
«- O)
m E 5
2 Ss i5
s to w
^ 2 >.
£ £ «
O- C
« E «
.
-------
ATTACHMENT B FACILITY LOCATION AERIAL MAP
The aerial location map is attached as provided by the discharger in the application.
Sea water intake
Outfall 001
18°58'13"N, 66°45'59"W
PLANT NOW JW
OMJW011
NlTlAL ISSUE
REVISIONS AND MLCORD CF tS5U£
NPDES Fact Sheet
-------
ATTACHMENT C FACILITY LOCATION TOPOGRAPHIC MAPS
The topographic location maps are attached as provided by the discharger in the application.
NPDES Fact Sheet
-------
[rmoel£ctrici
ffalomai
Sea water intake
Outfall 001
18°58'13"N, 66°.
Cayo
Marfa Lang*
PlAKT NOWTM. TRUE NORTH
Topographic map showing EcoEttcfcrka property, uj wan*' intake art! oulfad 001
REVISIONS AND RfCOWD OF ISSUE
SCALE
1 20DOO
NPDES Fact Sheet
-------
ATTACHMENT D EPA R2 REASONABLE POTENTIAL TOOL ANALYSIS
The following pages show the procedure and results of the reasonable potential analysis for the parameters listed
below:
Arsenic
Chlorine, Total Residual
Chromium
Color
Copper
Cyanide
Mercury
Oil & Grease
pH
Total Suspended Solids
Sulfide
Surfactants
Temperature
Turbidity
Zinc
How to read EPA R2 Reasonable Potential Tool Analysis results:
Terms and Acronyms:
Number of samples: number of samples used to conduct the analysis
Min: value of the lowest sampling result
Max: value of the largest sampling result
WQS - SB: Water Quality Standard for SB waters
WQS - SD: Water Quality Standard for SD waters
RWC: projected Receiving Water Concentration
Evaluating Reasonable Potential:
If the projected RWC is greater than the WQS for the appropriate water body classification, the
analysis indicates that the discharge will cause, have the reasonable potential to cause, or
contribute to an exceedance of WQS.
NPDES Fact Sheet
-------
R2 Reasonable Potential Tool Parameter Report
Compiled on 20 December, 2022
PR0025984 - 001 : Arsenic, total [as As]
Evaluated from 12/20/2017 to 12/20/2022
FACILITY INFORMATION:
ECOELECTRICA, L.P.
COGENERATION PROJECT
PENUELAS, PR
WQS Import File: PR2022Standards-RPTool.xlsx
SUMMARY STATISTICS:
Number of Samples: 4
Min: 0.006 ug/L
Mean: 3.5 ug/L
Max: 9 ug/L
WQS - SB: 36 ug/L
WQS - SD: 10 ug/L
RWC: 23.27 ug/L
1
-------
TIME SERIES
Date
Max: 9 ug/L ...WQS - SB: 36 ug/L
- - WQS - SD: 10 ug/L RWC: 23.27 ug/L
2
-------
RECEIVING WATER CONCENTRATION CALCULATIONS
assuming a 95% confidence level and a 95% probability basis
calculations from 1991 Technical Support Document pgs 51-55
Number of samples = n
Maximum effluent concentration = max
Dilution Ratio = DR
Coefficient of Variation (CV) = Sn//i or 0.6 when n < 10
Z-statistic = Zx
,, t, ,,,, , exP(Zg5 ln(l + CV2)0-5 0.5 ln(l + CV2))
Reasonable Potential Multiplier (RPM) = r-rj
F V ' exp(Zx ln(l + CV2)0-5 0.51n(l + CV2))
Receiving Water Concentration = max * RPM/Dilution Ratio
n
= 4
max
= 9
DR
= 1
CV
= 0.6
^95
= 1.645
Zx
= -0.068
_ exp(1.6451n(l + 0.62)0'5 - 0.51n(l + 0.62))
~ exp(0.068ln(l + 0.62)0-5 - 0.51n(l + 0.62))
= 2.59
RWC = 9 * 2.59/1
= 23.27
3
-------
DATA TABLE
NPDES ID
Outfall
Parameter
Monitoring Period
Value
Unit
PR0025984
001
Arsenic, total
[as
As]
2019-10-31
2.000
ug/L
PR0025984
001
Arsenic, total
[as
As]
2020-10-31
9.000
ug/L
PR0025984
001
Arsenic, total
[as
As]
2021-10-31
3.000
ug/L
PR0025984
001
Arsenic, total
[as
As]
2022-10-31
0.006
ug/L
4
-------
R2 Reasonable Potential Tool Parameter Report
Compiled on 20 December, 2022
PR0025984 - 001 : Chlorine, total residual
Evaluated from 12/20/2017 to 12/20/2022
FACILITY INFORMATION:
ECOELECTRICA, L.P.
COGENERATION PROJECT
PENUELAS, PR
WQS Import File: PR2022Standards-RPTool.xlsx
SUMMARY STATISTICS:
Number of Samples: 59
Min: 0.01 mg/L
Mean: 0.02 mg/L
Max: 0.09 mg/L
WQS - SB: 7.5 mg/L
WQS - SD: 11 mg/L
RWC: 0.12 mg/L
1
-------
TIME SERIES
O) 9
E
ro
3
;o
'(/) 6
CD
ro
-i<
o
CD
C 3
O
sz
O
0
2018 2019 2020 2021 2022 2023
Date
Max: 0.09 mg/L ...WQS - SB: 7.5 mg/L
- WQS - SD: 11 mg/L RWC: 0.12 mg/L
2
-------
RECEIVING WATER CONCENTRATION CALCULATIONS
assuming a 95% confidence level and a 95% probability basis
calculations from 1991 Technical Support Document pgs 51-55
Number of samples = n
Maximum effluent concentration = max
Dilution Ratio = DR
Coefficient of Variation (CV) = Sn//i or 0.6 when n < 10
Z-statistic = Zx
,, t, ,,,, , exP(Zg5 ln(l + CV2)0-5 0.51n(l + CV2))
Reasonable Potential Multiplier (RPM) = ^-7-= 7-
F V ' exp(Zx ln(l + CV2)0-5 0.51n(l + CV2))
Receiving Water Concentration = max * i?PM/Dilution Ratio
n = 59
max = 0.09
DR = 1
CV = 0.64
Z95 = 1.645
ZT = 1.084
_ exp(1.6451n(l + 0.642)0'5 - 0.51n(l + 0.642))
~ exp( 1.084ln(l + 0.642)0-5 - 0.51n(l + 0.642))
= 1.39
RWC = 0.09 * 1.39/1
= 0.12
3
-------
DATA TABLE
NPDES ID
Outfall
Parameter
Monitoring Period
Value
Unit
PR0025984
001
Chlorine,
total
residual
2017-12-31
0.03
mg/L
PR0025984
001
Chlorine,
total
residual
2018-01-31
0.02
mg/L
PR0025984
001
Chlorine,
total
residual
2018-02-28
0.04
mg/L
PR0025984
001
Chlorine,
total
residual
2018-03-31
0.02
mg/L
PR0025984
001
Chlorine,
total
residual
2018-04-30
0.04
mg/L
PR0025984
001
Chlorine,
total
residual
2018-05-31
0.03
mg/L
PR0025984
001
Chlorine,
total
residual
2018-06-30
0.06
mg/L
PR0025984
001
Chlorine,
total
residual
2018-07-31
0.03
mg/L
PR0025984
001
Chlorine,
total
residual
2018-08-31
0.01
mg/L
PR0025984
001
Chlorine,
total
residual
2018-09-30
0.09
mg/L
PR0025984
001
Chlorine,
total
residual
2018-10-31
0.02
mg/L
PR0025984
001
Chlorine,
total
residual
2018-11-30
0.02
mg/L
PR0025984
001
Chlorine,
total
residual
2018-12-31
0.02
mg/L
PR0025984
001
Chlorine,
total
residual
2019-01-31
0.02
mg/L
PR0025984
001
Chlorine,
total
residual
2019-02-28
0.02
mg/L
PR0025984
001
Chlorine,
total
residual
2019-03-31
0.01
mg/L
PR0025984
001
Chlorine,
total
residual
2019-04-30
0.02
mg/L
PR0025984
001
Chlorine,
total
residual
2019-05-31
0.01
mg/L
PR0025984
001
Chlorine,
total
residual
2019-06-30
0.02
mg/L
PR0025984
001
Chlorine,
total
residual
2019-07-31
0.01
mg/L
PR0025984
001
Chlorine,
total
residual
2019-08-31
0.03
mg/L
PR0025984
001
Chlorine,
total
residual
2019-09-30
0.03
mg/L
PR0025984
001
Chlorine,
total
residual
2019-10-31
0.02
mg/L
PR0025984
001
Chlorine,
total
residual
2019-11-30
0.02
mg/L
PR0025984
001
Chlorine,
total
residual
2019-12-31
0.02
mg/L
PR0025984
001
Chlorine,
total
residual
2020-01-31
0.03
mg/L
PR0025984
001
Chlorine,
total
residual
2020-02-29
0.03
mg/L
PR0025984
001
Chlorine,
total
residual
2020-03-31
0.02
mg/L
PR0025984
001
Chlorine,
total
residual
2020-04-30
0.02
mg/L
PR0025984
001
Chlorine,
total
residual
2020-05-31
0.02
mg/L
PR0025984
001
Chlorine,
total
residual
2020-06-30
0.04
mg/L
PR0025984
001
Chlorine,
total
residual
2020-07-31
0.03
mg/L
PR0025984
001
Chlorine,
total
residual
2020-08-31
0.03
mg/L
PR0025984
001
Chlorine,
total
residual
2020-09-30
0.02
mg/L
PR0025984
001
Chlorine,
total
residual
2020-10-31
0.02
mg/L
PR0025984
001
Chlorine,
total
residual
2020-11-30
0.03
mg/L
PR0025984
001
Chlorine,
total
residual
2020-12-31
0.02
mg/L
PR0025984
001
Chlorine,
total
residual
2021-01-31
0.02
mg/L
PR0025984
001
Chlorine,
total
residual
2021-02-28
0.02
mg/L
PR0025984
001
Chlorine,
total
residual
2021-03-31
0.01
mg/L
PR0025984
001
Chlorine,
total
residual
2021-04-30
0.01
mg/L
PR0025984
001
Chlorine,
total
residual
2021-05-31
0.01
mg/L
PR0025984
001
Chlorine,
total
residual
2021-06-30
0.01
mg/L
PR0025984
001
Chlorine,
total
residual
2021-07-31
0.01
mg/L
PR0025984
001
Chlorine,
total
residual
2021-08-31
0.01
mg/L
PR0025984
001
Chlorine,
total
residual
2021-09-30
0.02
mg/L
PR0025984
001
Chlorine,
total
residual
2021-10-31
0.02
mg/L
PR0025984
001
Chlorine,
total
residual
2021-11-30
0.01
mg/L
PR0025984
001
Chlorine,
total
residual
2021-12-31
0.02
mg/L
PR0025984
001
Chlorine,
total
residual
2022-01-31
0.01
mg/L
4
-------
NPDES ID
Outfall
Parameter
Monitoring Period
Value
Unit
PR0025984
001
Chlorine, total residual
2022-02-28
0.01
mg/L
PR0025984
001
Chlorine, total residual
2022-03-31
0.01
mg/L
PR0025984
001
Chlorine, total residual
2022-04-30
0.01
mg/L
PR0025984
001
Chlorine, total residual
2022-05-31
0.01
mg/L
PR0025984
001
Chlorine, total residual
2022-06-30
0.01
mg/L
PR0025984
001
Chlorine, total residual
2022-07-31
0.01
mg/L
PR0025984
001
Chlorine, total residual
2022-08-31
0.01
mg/L
PR0025984
001
Chlorine, total residual
2022-09-30
0.01
mg/L
PR0025984
001
Chlorine, total residual
2022-10-31
0.04
mg/L
5
-------
R2 Reasonable Potential Tool Parameter Report
Compiled on 20 December, 2022
PR0025984 - 001 : Chromium, total [as Cr]
Evaluated from 12/20/2017 to 12/20/2022
FACILITY INFORMATION:
ECOELECTRICA, L.P.
COGENERATION PROJECT
PENUELAS, PR
WQS Import File: PR2022Standards-RPTool.xlsx
SUMMARY STATISTICS:
Number of Samples: 59
Min: 0.01 mg/L
Mean: 0.02 mg/L
Max: 0.04 mg/L
WQS - SB: NA mg/L
WQS - SD: NA mg/L
RWC: 0.05 mg/L
1
-------
TIME SERIES
0.05
O)
E
i'
O
C/)
CO
ro
-i»
o
-i»
E
'E
o
L.
_c
o
0.04
0.02
0.00
1
A
/
A
2018
2019
2020 2021
Date
2022
2023
Max: 0.04 mg/L
- WQS - SD: NA mg/L
...WQS - SB: NA mg/L
RWC: 0.05 mg/L
2
-------
RECEIVING WATER CONCENTRATION CALCULATIONS
assuming a 95% confidence level and a 95% probability basis
calculations from 1991 Technical Support Document pgs 51-55
Number of samples = n
Maximum effluent concentration = max
Dilution Ratio = DR
Coefficient of Variation (CV) = Sn//i or 0.6 when n < 10
Z-statistic = Zx
,, t, ,,,, , exP(Zg5 ln(l + CV2)0-5 0.51n(l + CV2))
Reasonable Potential Multiplier (RPM) = ^-7-= 7-
F V ' exp(Zx ln(l + CV2)0-5 0.51n(l + CV2))
Receiving Water Concentration = max * i?PM/Dilution Ratio
n = 59
max = 0.04
DR = 1
CV = 0.61
Z95 = 1.645
ZT = 1.084
_ exp(1.6451n(l + 0.612)0'5 - 0.51n(l + 0.612))
~ exp( 1.084ln(l + 0.612)0-5 - 0.51n(l + 0.612))
= 1.37
RWC = 0.04* 1.37/1
= 0.05
3
-------
DATA TABLE
NPDES ID
Outfall
Parameter
Monitoring Period
Value
Unit
PR0025984
001
Chromium,
total
[as
Cr]
2017-12-31
0.010
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2018-01-31
0.010
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2018-02-28
0.010
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2018-03-31
0.010
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2018-04-30
0.010
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2018-05-31
0.010
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2018-06-30
0.010
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2018-07-31
0.010
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2018-08-31
0.010
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2018-09-30
0.010
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2018-10-31
0.015
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2018-11-30
0.015
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2018-12-31
0.015
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2019-01-31
0.015
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2019-02-28
0.015
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2019-03-31
0.015
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2019-04-30
0.015
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2019-05-31
0.015
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2019-06-30
0.015
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2019-07-31
0.015
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2019-08-31
0.015
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2019-09-30
0.015
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2019-10-31
0.026
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2019-11-30
0.015
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2019-12-31
0.015
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2020-01-31
0.015
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2020-02-29
0.015
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2020-03-31
0.015
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2020-04-30
0.015
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2020-05-31
0.015
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2020-06-30
0.040
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2020-07-31
0.040
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2020-08-31
0.040
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2020-09-30
0.040
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2020-10-31
0.040
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2020-11-30
0.040
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2020-12-31
0.040
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2021-01-31
0.040
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2021-02-28
0.040
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2021-03-31
0.040
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2021-04-30
0.040
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2021-05-31
0.040
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2021-06-30
0.040
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2021-07-31
0.040
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2021-08-31
0.040
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2021-09-30
0.040
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2021-10-31
0.040
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2021-11-30
0.010
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2021-12-31
0.040
mg/L
PR0025984
001
Chromium,
total
[as
Cr]
2022-01-31
0.010
mg/L
4
-------
NPDES ID Outfall Parameter
Monitoring Period Value Unit
PR0025984
001
Chromium, total
[as
Cr]
2022-02-28
0.012
mg/L
PR0025984
001
Chromium, total
[as
Cr]
2022-03-31
0.010
mg/L
PR0025984
001
Chromium, total
[as
Cr]
2022-04-30
0.010
mg/L
PR0025984
001
Chromium, total
[as
Cr]
2022-05-31
0.010
mg/L
PR0025984
001
Chromium, total
[as
Cr]
2022-06-30
0.010
mg/L
PR0025984
001
Chromium, total
[as
Cr]
2022-07-31
0.010
mg/L
PR0025984
001
Chromium, total
[as
Cr]
2022-08-31
0.010
mg/L
PR0025984
001
Chromium, total
[as
Cr]
2022-09-30
0.010
mg/L
PR0025984
001
Chromium, total
[as
Cr]
2022-10-31
0.010
mg/L
5
-------
R2 Reasonable Potential Tool Parameter Report
Compiled on 20 December, 2022
PR0025984 - 001 : Color [PT-CO units]
Evaluated from 12/20/2017 to 12/20/2022
FACILITY INFORMATION:
ECOELECTRICA, L.P.
COGENERATION PROJECT
PENUELAS, PR
WQS Import File: PR2022Standards-RPTool.xlsx
SUMMARY STATISTICS:
Number of Samples: 59
Min: 5 col unit (pc)
Mean: 5.34 col unit (pc)
Max: 15 col unit (pc)
WQS - SB: 5 col unit (pc)
WQS - SD: 10 col unit (pc)
RWC: 17.63 col unit (pc)
1
-------
TIME SERIES
2018
2019
2020 2021
Date
2022
2023
Max: 15 col unit (pc)
...WQS - SB: 5 col unit (pc)
- WQS - SD: 10 col unit (pc)
RWC: 17.63 col unit (pc)
2
-------
RECEIVING WATER CONCENTRATION CALCULATIONS
assuming a 95% confidence level and a 95% probability basis
calculations from 1991 Technical Support Document pgs 51-55
Number of samples = n
Maximum effluent concentration = max
Dilution Ratio = DR
Coefficient of Variation (CV) = Sn//i or 0.6 when n < 10
Z-statistic = Zx
,, t, ,,,, , exP(Zg5 ln(l + CV2)0-5 0.51n(l + CV2))
Reasonable Potential Multiplier (RPM) = ^-7-= 7-
F V ' exp(Zx ln(l + CV2)0-5 0.51n(l + CV2))
Receiving Water Concentration = max * i?PM/Dilution Ratio
n = 59
max = 15
DR = 1
CV = 0.29
Z95 = 1.645
ZT = 1.084
_ exp(1.6451n(l + 0.292)0'5 - 0.51n(l + 0.292))
~ exp( 1.084ln(l + 0.292)0-5 - 0.51n(l + 0.292))
= 1.18
RWC = 15* 1.18/1
= 17.63
3
-------
DATA TABLE
NPDES ID
Outfall
Parameter
Monitoring Period
Value
Unit
PR0025984
001
Color
[PT-CO
units]
2017-12-31
5
col
unit
(Pc)
PR0025984
001
Color
[PT-CO
units]
2018-01-31
5
col
unit
(Pc)
PR0025984
001
Color
[PT-CO
units]
2018-02-28
5
col
unit
(pc)
PR0025984
001
Color
[PT-CO
units]
2018-03-31
5
col
unit
(pc)
PR0025984
001
Color
[PT-CO
units]
2018-04-30
5
col
unit
(pc)
PR0025984
001
Color
[PT-CO
units]
2018-05-31
5
col
unit
(pc)
PR0025984
001
Color
[PT-CO
units]
2018-06-30
5
col
unit
(pc)
PR0025984
001
Color
[PT-CO
units]
2018-07-31
5
col
unit
(pc)
PR0025984
001
Color
[PT-CO
units]
2018-08-31
5
col
unit
(pc)
PR0025984
001
Color
[PT-CO
units]
2018-09-30
15
col
unit
(pc)
PR0025984
001
Color
[PT-CO
units]
2018-10-31
5
col
unit
(pc)
PR0025984
001
Color
[PT-CO
units]
2018-11-30
5
col
unit
(pc)
PR0025984
001
Color
[PT-CO
units]
2018-12-31
5
col
unit
(pc)
PR0025984
001
Color
[PT-CO
units]
2019-01-31
5
col
unit
(pc)
PR0025984
001
Color
[PT-CO
units]
2019-02-28
5
col
unit
(pc)
PR0025984
001
Color
[PT-CO
units]
2019-03-31
5
col
unit
(pc)
PR0025984
001
Color
[PT-CO
units]
2019-04-30
5
col
unit
(pc)
PR0025984
001
Color
[PT-CO
units]
2019-05-31
5
col
unit
(pc)
PR0025984
001
Color
[PT-CO
units]
2019-06-30
5
col
unit
(pc)
PR0025984
001
Color
[PT-CO
units]
2019-07-31
5
col
unit
(pc)
PR0025984
001
Color
[PT-CO
units]
2019-08-31
5
col
unit
(pc)
PR0025984
001
Color
[PT-CO
units]
2019-09-30
5
col
unit
(pc)
PR0025984
001
Color
[PT-CO
units]
2019-10-31
5
col
unit
(pc)
PR0025984
001
Color
[PT-CO
units]
2019-11-30
5
col
unit
(pc)
PR0025984
001
Color
[PT-CO
units]
2019-12-31
5
col
unit
(pc)
PR0025984
001
Color
[PT-CO
units]
2020-01-31
5
col
unit
(pc)
PR0025984
001
Color
[PT-CO
units]
2020-02-29
5
col
unit
(pc)
PR0025984
001
Color
[PT-CO
units]
2020-03-31
5
col
unit
(pc)
PR0025984
001
Color
[PT-CO
units]
2020-04-30
5
col
unit
(pc)
PR0025984
001
Color
[PT-CO
units]
2020-05-31
5
col
unit
(pc)
PR0025984
001
Color
[PT-CO
units]
2020-06-30
5
col
unit
(pc)
PR0025984
001
Color
[PT-CO
units]
2020-07-31
5
col
unit
(pc)
PR0025984
001
Color
[PT-CO
units]
2020-08-31
5
col
unit
(pc)
PR0025984
001
Color
[PT-CO
units]
2020-09-30
5
col
unit
(pc)
PR0025984
001
Color
[PT-CO
units]
2020-10-31
5
col
unit
(pc)
PR0025984
001
Color
[PT-CO
units]
2020-11-30
5
col
unit
(pc)
PR0025984
001
Color
[PT-CO
units]
2020-12-31
5
col
unit
(pc)
PR0025984
001
Color
[PT-CO
units]
2021-01-31
5
col
unit
(pc)
PR0025984
001
Color
[PT-CO
units]
2021-02-28
5
col
unit
(pc)
PR0025984
001
Color
[PT-CO
units]
2021-03-31
5
col
unit
(pc)
PR0025984
001
Color
[PT-CO
units]
2021-04-30
5
col
unit
(pc)
PR0025984
001
Color
[PT-CO
units]
2021-05-31
5
col
unit
(pc)
PR0025984
001
Color
[PT-CO
units]
2021-06-30
5
col
unit
(pc)
PR0025984
001
Color
[PT-CO
units]
2021-07-31
5
col
unit
(pc)
PR0025984
001
Color
[PT-CO
units]
2021-08-31
5
col
unit
(pc)
PR0025984
001
Color
[PT-CO
units]
2021-09-30
5
col
unit
(pc)
PR0025984
001
Color
[PT-CO
units]
2021-10-31
5
col
unit
(pc)
PR0025984
001
Color
[PT-CO
units]
2021-11-30
5
col
unit
(pc)
PR0025984
001
Color
[PT-CO
units]
2021-12-31
5
col
unit
(pc)
PR0025984
001
Color
[PT-CO
units]
2022-01-31
5
col
unit
(pc)
4
-------
NPDES ID Outfall Parameter
Monitoring Period Value Unit
PR0025984
001
Color
[PT-CO units]
2022-02-28
5
col unit
(PC)
PR0025984
001
Color
[PT-CO units]
2022-03-31
5
col unit
(pc)
PR0025984
001
Color
[PT-CO units]
2022-04-30
5
col unit
(pc)
PR0025984
001
Color
[PT-CO units]
2022-05-31
5
col unit
(pc)
PR0025984
001
Color
[PT-CO units]
2022-06-30
5
col unit
(pc)
PR0025984
001
Color
[PT-CO units]
2022-07-31
5
col unit
(pc)
PR0025984
001
Color
[PT-CO units]
2022-08-31
5
col unit
(pc)
PR0025984
001
Color
[PT-CO units]
2022-09-30
10
col unit
(pc)
PR0025984
001
Color
[PT-CO units]
2022-10-31
10
col unit
(pc)
5
-------
R2 Reasonable Potential Tool Parameter Report
Compiled on 20 December, 2022
PR0025984 - 001 : Copper, total [as Cu]
Evaluated from 12/20/2017 to 12/20/2022
FACILITY INFORMATION:
ECOELECTRICA, L.P.
COGENERATION PROJECT
PENUELAS, PR
WQS Import File: PR2022Standards-RPTool.xlsx
SUMMARY STATISTICS:
Number of Samples: 18
Min: 1 ug/L
Mean: 2.09 ug/L
Max: 3.1 ug/L
WQS - SB: 3.73 ug/L
WQS - SD: NA ug/L
RWC: 3.78 ug/L
1
-------
TIME SERIES
Date
Max: 3.1 ug/L ...WQS - SB: 3.73 ug/L
- - WQS - SD: NA ug/L RWC: 3.78 ug/L
2
-------
RECEIVING WATER CONCENTRATION CALCULATIONS
assuming a 95% confidence level and a 95% probability basis
calculations from 1991 Technical Support Document pgs 51-55
Number of samples = n
Maximum effluent concentration = max
Dilution Ratio = DR
Coefficient of Variation (CV) = Sn//i or 0.6 when n < 10
Z-statistic = Zx
,, t, ,,,, , exP(Zg5 ln(l + CV2)0-5 0.51n(l + CV2))
Reasonable Potential Multiplier (RPM) = ^-7-= 7-
F V ' exp(Zx ln(l + CV2)0-5 0.51n(l + CV2))
Receiving Water Concentration = max * i?PM/Dilution Ratio
n = 18
max = 3.1
DR = 1
CV = 0.32
Z95 = 1.645
ZT = 1.022
_ exp(1.6451n(l + 0.322)0'5 - 0.51n(l + 0.322))
~ exp(1.0221n(l + 0.322)0-5 - 0.51n(l + 0.322))
= 1.22
RWC = 3.1 *1.22/1
= 3.78
3
-------
DATA TABLE
NPDES ID
Outfall
Parameter
Monitoring Period
Value
Unit
PR0025984
001
Copper,
total
[as
Cu]
2018-02-28
1.0
ug/L
PR0025984
001
Copper,
total
[as
Cu]
2018-05-31
1.0
ug/L
PR0025984
001
Copper,
total
[as
Cu]
2018-08-31
1.0
ug/L
PR0025984
001
Copper,
total
[as
Cu]
2018-11-30
2.0
ug/L
PR0025984
001
Copper,
total
[as
Cu]
2019-02-28
2.5
ug/L
PR0025984
001
Copper,
total
[as
Cu]
2019-05-31
2.5
ug/L
PR0025984
001
Copper,
total
[as
Cu]
2019-08-31
2.5
ug/L
PR0025984
001
Copper,
total
[as
Cu]
2019-11-30
3.0
ug/L
PR0025984
001
Copper,
total
[as
Cu]
2020-02-29
2.5
ug/L
PR0025984
001
Copper,
total
[as
Cu]
2020-05-31
2.5
ug/L
PR0025984
001
Copper,
total
[as
Cu]
2020-11-30
1.5
ug/L
PR0025984
001
Copper,
total
[as
Cu]
2021-02-28
3.0
ug/L
PR0025984
001
Copper,
total
[as
Cu]
2021-05-31
1.5
ug/L
PR0025984
001
Copper,
total
[as
Cu]
2021-08-31
3.1
ug/L
PR0025984
001
Copper,
total
[as
Cu]
2021-11-30
2.0
ug/L
PR0025984
001
Copper,
total
[as
Cu]
2022-02-28
2.0
ug/L
PR0025984
001
Copper,
total
[as
Cu]
2022-05-31
2.0
ug/L
PR0025984
001
Copper,
total
[as
Cu]
2022-08-31
2.0
ug/L
4
-------
R2 Reasonable Potential Tool Parameter Report
Compiled on 20 December, 2022
PR0025984 - 001 : Cyanide, free available
Evaluated from 12/20/2017 to 12/20/2022
FACILITY INFORMATION:
ECOELECTRICA, L.P.
COGENERATION PROJECT
PENUELAS, PR
WQS Import File: PR2022Standards-RPTool.xlsx
SUMMARY STATISTICS:
Number of Samples: 59
Min: 0.7 ug/L
Mean: 1.08 ug/L
Max: 5 ug/L
WQS - SB: 0.001 ug/L
WQS - SD: NA ug/L
RWC: 6.56 ug/L
1
-------
TIME SERIES
-
A
I
2018
2019
2020 2021
2022
202
Date
Max: 5 ug/L
- WQS - SD: NA ug/L
...WQS - SB: 0.001 ug/L
RWC: 6.56 ug/L
2
-------
RECEIVING WATER CONCENTRATION CALCULATIONS
assuming a 95% confidence level and a 95% probability basis
calculations from 1991 Technical Support Document pgs 51-55
Number of samples = n
Maximum effluent concentration = max
Dilution Ratio = DR
Coefficient of Variation (CV) = Sn//i or 0.6 when n < 10
Z-statistic = Zx
,, t, ,,,, , exP(Zg5 ln(l + CV2)0-5 0.51n(l + CV2))
Reasonable Potential Multiplier (RPM) = ^-7-= 7-
F V ' exp(Zx ln(l + CV2)0-5 0.51n(l + CV2))
Receiving Water Concentration = max * i?PM/Dilution Ratio
n = 59
max = 5
DR = 1
CV = 0.51
Z95 = 1.645
ZT = 1.084
_ exp(1.6451n(l + 0.512)0'5 - 0.51n(l + 0.512))
~ exp( 1.084ln(l + 0.512)0-5 - 0.51n(l + 0.512))
= 1.31
RWC = 5* 1.31/1
= 6.56
3
-------
DATA TABLE
NPDES ID
Outfall
Parameter
Monitoring Period
Value
Unit
PR0025984
001
Cyanide,
free
available
2017-12-31
1.0
ug/L
PR0025984
001
Cyanide,
free
available
2018-01-31
1.0
ug/L
PR0025984
001
Cyanide,
free
available
2018-02-28
1.0
ug/L
PR0025984
001
Cyanide,
free
available
2018-03-31
1.0
ug/L
PR0025984
001
Cyanide,
free
available
2018-04-30
1.0
ug/L
PR0025984
001
Cyanide,
free
available
2018-05-31
1.0
ug/L
PR0025984
001
Cyanide,
free
available
2018-06-30
1.0
ug/L
PR0025984
001
Cyanide,
free
available
2018-07-31
1.0
ug/L
PR0025984
001
Cyanide,
free
available
2018-08-31
1.0
ug/L
PR0025984
001
Cyanide,
free
available
2018-09-30
1.0
ug/L
PR0025984
001
Cyanide,
free
available
2018-10-31
1.0
ug/L
PR0025984
001
Cyanide,
free
available
2018-11-30
1.0
ug/L
PR0025984
001
Cyanide,
free
available
2018-12-31
1.0
ug/L
PR0025984
001
Cyanide,
free
available
2019-01-31
1.0
ug/L
PR0025984
001
Cyanide,
free
available
2019-02-28
1.0
ug/L
PR0025984
001
Cyanide,
free
available
2019-03-31
1.0
ug/L
PR0025984
001
Cyanide,
free
available
2019-04-30
1.0
ug/L
PR0025984
001
Cyanide,
free
available
2019-05-31
2.0
ug/L
PR0025984
001
Cyanide,
free
available
2019-06-30
1.0
ug/L
PR0025984
001
Cyanide,
free
available
2019-07-31
1.0
ug/L
PR0025984
001
Cyanide,
free
available
2019-08-31
1.0
ug/L
PR0025984
001
Cyanide,
free
available
2019-09-30
1.0
ug/L
PR0025984
001
Cyanide,
free
available
2019-10-31
1.0
ug/L
PR0025984
001
Cyanide,
free
available
2019-11-30
1.0
ug/L
PR0025984
001
Cyanide,
free
available
2019-12-31
1.0
ug/L
PR0025984
001
Cyanide,
free
available
2020-01-31
1.0
ug/L
PR0025984
001
Cyanide,
free
available
2020-02-29
1.0
ug/L
PR0025984
001
Cyanide,
free
available
2020-03-31
1.0
ug/L
PR0025984
001
Cyanide,
free
available
2020-04-30
1.0
ug/L
PR0025984
001
Cyanide,
free
available
2020-05-31
5.0
ug/L
PR0025984
001
Cyanide,
free
available
2020-06-30
1.0
ug/L
PR0025984
001
Cyanide,
free
available
2020-07-31
1.0
ug/L
PR0025984
001
Cyanide,
free
available
2020-08-31
1.0
ug/L
PR0025984
001
Cyanide,
free
available
2020-09-30
1.0
ug/L
PR0025984
001
Cyanide,
free
available
2020-10-31
1.0
ug/L
PR0025984
001
Cyanide,
free
available
2020-11-30
1.0
ug/L
PR0025984
001
Cyanide,
free
available
2020-12-31
1.0
ug/L
PR0025984
001
Cyanide,
free
available
2021-01-31
1.0
ug/L
PR0025984
001
Cyanide,
free
available
2021-02-28
1.0
ug/L
PR0025984
001
Cyanide,
free
available
2021-03-31
1.0
ug/L
PR0025984
001
Cyanide,
free
available
2021-04-30
1.0
ug/L
PR0025984
001
Cyanide,
free
available
2021-05-31
1.0
ug/L
PR0025984
001
Cyanide,
free
available
2021-06-30
1.0
ug/L
PR0025984
001
Cyanide,
free
available
2021-07-31
1.0
ug/L
PR0025984
001
Cyanide,
free
available
2021-08-31
1.0
ug/L
PR0025984
001
Cyanide,
free
available
2021-09-30
1.0
ug/L
PR0025984
001
Cyanide,
free
available
2021-10-31
1.0
ug/L
PR0025984
001
Cyanide,
free
available
2021-11-30
1.0
ug/L
PR0025984
001
Cyanide,
free
available
2021-12-31
2.0
ug/L
PR0025984
001
Cyanide,
free
available
2022-01-31
1.0
ug/L
4
-------
NPDES ID
Outfall
Parameter
Monitoring Period
Value
Unit
PR0025984
001
Cyanide, free available
2022-02-28
1.0
ug/L
PR0025984
001
Cyanide, free available
2022-03-31
1.0
ug/L
PR0025984
001
Cyanide, free available
2022-04-30
1.0
ug/L
PR0025984
001
Cyanide, free available
2022-05-31
1.0
ug/L
PR0025984
001
Cyanide, free available
2022-06-30
1.0
ug/L
PR0025984
001
Cyanide, free available
2022-07-31
0.7
ug/L
PR0025984
001
Cyanide, free available
2022-08-31
0.7
ug/L
PR0025984
001
Cyanide, free available
2022-09-30
0.7
ug/L
PR0025984
001
Cyanide, free available
2022-10-31
0.8
ug/L
5
-------
R2 Reasonable Potential Tool Parameter Report
Compiled on 20 December, 2022
PR0025984 - 001 : Mercury, total [as Hg]
Evaluated from 12/20/2017 to 12/20/2022
FACILITY INFORMATION:
ECOELECTRICA, L.P.
COGENERATION PROJECT
PENUELAS, PR
WQS Import File: PR2022Standards-RPTool.xlsx
SUMMARY STATISTICS:
Number of Samples: 18
Min: 0.01 ug/L
Mean: 0.02 ug/L
Max: 0.05 ug/L
WQS - SB: 0.051 ug/L
WQS - SD: 0.05 ug/L
RWC: 0.07 ug/L
1
-------
TIME SERIES
Date
Max: 0.05 ug/L ...WQS - SB: 0.051 ug/L
- - WQS - SD: 0.05 ug/L RWC: 0.07 ug/L
-------
RECEIVING WATER CONCENTRATION CALCULATIONS
assuming a 95% confidence level and a 95% probability basis
calculations from 1991 Technical Support Document pgs 51-55
Number of samples = n
Maximum effluent concentration = max
Dilution Ratio = DR
Coefficient of Variation (CV) = Sn//i or 0.6 when n < 10
Z-statistic = Zx
t, ,,,, , exP(Zg5 ln(l + CV2)0-5 0.51n(l + CV2))
Reasonable Potential Multiplier (RPM) = ^-7-=
F V ' exp(Zx ln(l + CV2)0-5 0.51n(l + CV2))
Receiving Water Concentration = max * RPM/Dilution Ratio
n =
18
max =
0.05
DR =
1
CV =
0.5
^95 =
1.645
Zx =
1.022
_ exp(1.6451n(l + 0.52)0'5 - 0.51n(l + 0.52))
~ exp(1.0221n(l + 0.52)0-5 - 0.51n(l + 0.52))
= 1.34
RWC = 0.05 * 1.34/1
= 0.07
3
-------
DATA TABLE
NPDES ID
Outfall
Parameter
Monitoring Period
Value
Unit
PR0025984
001
Mercury,
total
[as
Hg]
2018-02-28
0.010
ug/L
PR0025984
001
Mercury,
total
[as
Hg]
2018-05-31
0.010
ug/L
PR0025984
001
Mercury,
total
[as
Hg]
2018-08-31
0.030
ug/L
PR0025984
001
Mercury,
total
[as
Hg]
2018-11-30
0.030
ug/L
PR0025984
001
Mercury,
total
[as
Hg]
2019-02-28
0.040
ug/L
PR0025984
001
Mercury,
total
[as
Hg]
2019-05-31
0.030
ug/L
PR0025984
001
Mercury,
total
[as
Hg]
2019-08-31
0.030
ug/L
PR0025984
001
Mercury,
total
[as
Hg]
2019-11-30
0.030
ug/L
PR0025984
001
Mercury,
total
[as
Hg]
2020-02-29
0.030
ug/L
PR0025984
001
Mercury,
total
[as
Hg]
2020-05-31
0.050
ug/L
PR0025984
001
Mercury,
total
[as
Hg]
2020-11-30
0.010
ug/L
PR0025984
001
Mercury,
total
[as
Hg]
2021-02-28
0.043
ug/L
PR0025984
001
Mercury,
total
[as
Hg]
2021-05-31
0.010
ug/L
PR0025984
001
Mercury,
total
[as
Hg]
2021-08-31
0.010
ug/L
PR0025984
001
Mercury,
total
[as
Hg]
2021-11-30
0.020
ug/L
PR0025984
001
Mercury,
total
[as
Hg]
2022-02-28
0.020
ug/L
PR0025984
001
Mercury,
total
[as
Hg]
2022-05-31
0.020
ug/L
PR0025984
001
Mercury,
total
[as
Hg]
2022-08-31
0.020
ug/L
4
-------
R2 Reasonable Potential Tool Parameter Report
Compiled on 20 December, 2022
PR0025984 - 001 : Oil & Grease
Evaluated from 12/20/2017 to 12/20/2022
FACILITY INFORMATION:
ECOELECTRICA, L.P.
COGENERATION PROJECT
PENUELAS, PR
WQS Import File: PR2022Standards-RPTool.xlsx
SUMMARY STATISTICS:
Number of Samples: 59
Min: 1.2 mg/L
Mean: 4.1 mg/L
Max: 12 mg/L
WQS - SB: 5 mg/L
WQS - SD: 5 mg/L
RWC: 16.88 mg/L
1
-------
TIME SERIES
Date
Max: 12 mg/L ...WQS - SB: 5 mg/L
- - WQS - SD: 5 mg/L RWC: 16.88 mg/L
2
-------
RECEIVING WATER CONCENTRATION CALCULATIONS
assuming a 95% confidence level and a 95% probability basis
calculations from 1991 Technical Support Document pgs 51-55
Number of samples = n
Maximum effluent concentration = max
Dilution Ratio = DR
Coefficient of Variation (CV) = Sn//i or 0.6 when n < 10
Z-statistic = Zx
,, t, ,,,, , exP(Zg5 ln(l + CV2)0-5 0.51n(l + CV2))
Reasonable Potential Multiplier (RPM) = ^-7-= 7-
F V ' exp(Zx ln(l + CV2)0-5 0.51n(l + CV2))
Receiving Water Concentration = max * i?PM/Dilution Ratio
n = 59
max = 12
DR = 1
CV = 0.67
Z95 = 1.645
ZT = 1.084
_ exp(1.6451n(l + 0.672)0'5 - 0.51n(l + 0.672))
~ exp( 1.084ln(l + 0.672)0-5 - 0.51n(l + 0.672))
= 1.41
RWC = 12* 1.41/1
= 16.88
3
-------
DATA TABLE
NPDES ID
Outfall
Parameter
Monitoring Period
Value
Unit
PR0025984
001
Oi
&
Grease
2017-12-31
1.20
mg/L
PR0025984
001
Oi
&
Grease
2018-01-31
3.44
mg/L
PR0025984
001
Oi
&
Grease
2018-02-28
1.75
mg/L
PR0025984
001
Oi
&
Grease
2018-03-31
6.22
mg/L
PR0025984
001
Oi
&
Grease
2018-04-30
1.20
mg/L
PR0025984
001
Oi
&
Grease
2018-05-31
9.20
mg/L
PR0025984
001
Oi
&
Grease
2018-06-30
4.47
mg/L
PR0025984
001
Oi
&
Grease
2018-07-31
7.98
mg/L
PR0025984
001
Oi
&
Grease
2018-08-31
9.66
mg/L
PR0025984
001
Oi
&
Grease
2018-09-30
4.20
mg/L
PR0025984
001
Oi
&
Grease
2018-10-31
3.72
mg/L
PR0025984
001
Oi
&
Grease
2018-11-30
1.20
mg/L
PR0025984
001
Oi
&
Grease
2018-12-31
1.20
mg/L
PR0025984
001
Oi
&
Grease
2019-01-31
1.24
mg/L
PR0025984
001
Oi
&
Grease
2019-02-28
12.00
mg/L
PR0025984
001
Oi
&
Grease
2019-03-31
1.20
mg/L
PR0025984
001
Oi
&
Grease
2019-04-30
2.06
mg/L
PR0025984
001
Oi
&
Grease
2019-05-31
1.20
mg/L
PR0025984
001
Oi
&
Grease
2019-06-30
8.21
mg/L
PR0025984
001
Oi
&
Grease
2019-07-31
1.20
mg/L
PR0025984
001
Oi
&
Grease
2019-08-31
3.78
mg/L
PR0025984
001
Oi
&
Grease
2019-09-30
3.16
mg/L
PR0025984
001
Oi
&
Grease
2019-10-31
2.70
mg/L
PR0025984
001
Oi
&
Grease
2019-11-30
1.55
mg/L
PR0025984
001
Oi
&
Grease
2019-12-31
3.80
mg/L
PR0025984
001
Oi
&
Grease
2020-01-31
1.33
mg/L
PR0025984
001
Oi
&
Grease
2020-02-29
2.77
mg/L
PR0025984
001
Oi
&
Grease
2020-03-31
1.24
mg/L
PR0025984
001
Oi
&
Grease
2020-04-30
1.20
mg/L
PR0025984
001
Oi
&
Grease
2020-05-31
4.85
mg/L
PR0025984
001
Oi
&
Grease
2020-06-30
1.71
mg/L
PR0025984
001
Oi
&
Grease
2020-07-31
7.80
mg/L
PR0025984
001
Oi
&
Grease
2020-08-31
10.80
mg/L
PR0025984
001
Oi
&
Grease
2020-09-30
6.81
mg/L
PR0025984
001
Oi
&
Grease
2020-10-31
6.84
mg/L
PR0025984
001
Oi
&
Grease
2020-11-30
9.68
mg/L
PR0025984
001
Oi
&
Grease
2020-12-31
4.74
mg/L
PR0025984
001
Oi
&
Grease
2021-01-31
3.16
mg/L
PR0025984
001
Oi
&
Grease
2021-02-28
4.18
mg/L
PR0025984
001
Oi
&
Grease
2021-03-31
1.35
mg/L
PR0025984
001
Oi
&
Grease
2021-04-30
6.49
mg/L
PR0025984
001
Oi
&
Grease
2021-05-31
2.89
mg/L
PR0025984
001
Oi
&
Grease
2021-06-30
3.30
mg/L
PR0025984
001
Oi
&
Grease
2021-07-31
5.62
mg/L
PR0025984
001
Oi
&
Grease
2021-08-31
3.40
mg/L
PR0025984
001
Oi
&
Grease
2021-09-30
4.10
mg/L
PR0025984
001
Oi
&
Grease
2021-10-31
2.33
mg/L
PR0025984
001
Oi
&
Grease
2021-11-30
1.79
mg/L
PR0025984
001
Oi
&
Grease
2021-12-31
3.23
mg/L
PR0025984
001
Oi
&
Grease
2022-01-31
3.75
mg/L
4
-------
NPDES ID
Outfall
Parameter
Monitoring Period
Value
Unit
PR0025984
001
Oil & Grease
2022-02-28
2.84
mg/L
PR0025984
001
Oil & Grease
2022-03-31
6.32
mg/L
PR0025984
001
Oil & Grease
2022-04-30
3.44
mg/L
PR0025984
001
Oil & Grease
2022-05-31
2.37
mg/L
PR0025984
001
Oil & Grease
2022-06-30
4.76
mg/L
PR0025984
001
Oil & Grease
2022-07-31
2.18
mg/L
PR0025984
001
Oil & Grease
2022-08-31
3.50
mg/L
PR0025984
001
Oil & Grease
2022-09-30
6.90
mg/L
PR0025984
001
Oil & Grease
2022-10-31
6.63
mg/L
5
-------
R2 Reasonable Potential Tool Parameter Report
Compiled on 20 December, 2022
PR0025984 - 001 : pH
Evaluated from 12/20/2017 to 12/20/2022
FACILITY INFORMATION:
ECOELECTRICA, L.P.
COGENERATION PROJECT
PENUELAS, PR
WQS Import File: PR2022Standards-RPTool.xlsx
SUMMARY STATISTICS:
Number of Samples: 59
Min: 8.22 SU
Mean: 8.34 SU
Max: 9.17 SU
WQS - SB: 8.5 SU
WQS - SD: 9 SU
RWC: 9.25 SU
1
-------
TIME SERIES
7.5
OT 5.0
X
Q.
2.5
0.0
2018
2019
2020 2021
Date
2022
2023
Max: 9.17 SU
.WQS - SB: 8.5 SU
- WQS - SD: 9 SU
RWC: 9.25 SU
2
-------
RECEIVING WATER CONCENTRATION CALCULATIONS
assuming a 95% confidence level and a 95% probability basis
calculations from 1991 Technical Support Document pgs 51-55
Number of samples = n
Maximum effluent concentration = max
Dilution Ratio = DR
Coefficient of Variation (CV) = Sn//i or 0.6 when n < 10
Z-statistic = Zx
,, t, ,,,, , exP(Zg5 ln(l + CV2)0-5 0.51n(l + CV2))
Reasonable Potential Multiplier (RPM) = ^-7-= 7-
F V ' exp(Zx ln(l + CV2)0-5 0.51n(l + CV2))
Receiving Water Concentration = max * i?PM/Dilution Ratio
n = 59
max = 9.17
DR = 1
CV = 0.02
Z95 = 1.645
ZT = 1.084
_ exp(1.6451n(l + 0.022)0'5 - 0.51n(l + 0.022))
~ exp( 1.084ln(l + 0.022)0-5 - 0.51n(l + 0.022))
= 1.01
RWC = 9.17* 1.01/1
= 9.25
3
-------
DATA TABLE
NPDES ID
Outfall
Parameter
Monitoring Period
Value
Unit
PR0025984
001
pH
2017-12-31
8.30
SU
PR0025984
001
pH
2018-01-31
8.34
SU
PR0025984
001
pH
2018-02-28
8.25
SU
PR0025984
001
pH
2018-03-31
8.24
SU
PR0025984
001
pH
2018-04-30
8.28
SU
PR0025984
001
pH
2018-05-31
8.26
SU
PR0025984
001
pH
2018-06-30
8.26
SU
PR0025984
001
pH
2018-07-31
8.23
SU
PR0025984
001
pH
2018-08-31
8.29
SU
PR0025984
001
pH
2018-09-30
8.28
SU
PR0025984
001
pH
2018-10-31
8.26
SU
PR0025984
001
pH
2018-11-30
8.31
SU
PR0025984
001
pH
2018-12-31
8.31
SU
PR0025984
001
pH
2019-01-31
8.23
SU
PR0025984
001
pH
2019-02-28
8.27
SU
PR0025984
001
pH
2019-03-31
8.27
SU
PR0025984
001
pH
2019-04-30
8.28
SU
PR0025984
001
pH
2019-05-31
8.29
SU
PR0025984
001
pH
2019-06-30
8.29
SU
PR0025984
001
pH
2019-07-31
8.28
SU
PR0025984
001
pH
2019-08-31
8.32
SU
PR0025984
001
pH
2019-09-30
8.31
SU
PR0025984
001
pH
2019-10-31
8.31
SU
PR0025984
001
pH
2019-11-30
8.55
SU
PR0025984
001
pH
2019-12-31
8.31
SU
PR0025984
001
pH
2020-01-31
8.37
SU
PR0025984
001
pH
2020-02-29
8.35
SU
PR0025984
001
pH
2020-03-31
8.38
SU
PR0025984
001
pH
2020-04-30
8.29
SU
PR0025984
001
pH
2020-05-31
8.25
SU
PR0025984
001
pH
2020-06-30
8.27
SU
PR0025984
001
pH
2020-07-31
8.30
SU
PR0025984
001
pH
2020-08-31
8.29
SU
PR0025984
001
pH
2020-09-30
8.42
SU
PR0025984
001
pH
2020-10-31
8.42
SU
PR0025984
001
pH
2020-11-30
8.32
SU
PR0025984
001
pH
2020-12-31
8.32
SU
PR0025984
001
pH
2021-01-31
8.33
SU
PR0025984
001
pH
2021-02-28
8.22
SU
PR0025984
001
pH
2021-03-31
8.33
SU
PR0025984
001
pH
2021-04-30
8.31
SU
PR0025984
001
pH
2021-05-31
8.35
SU
PR0025984
001
pH
2021-06-30
8.44
SU
PR0025984
001
pH
2021-07-31
8.29
SU
PR0025984
001
pH
2021-08-31
8.28
SU
PR0025984
001
pH
2021-09-30
8.32
SU
PR0025984
001
pH
2021-10-31
8.35
SU
PR0025984
001
pH
2021-11-30
9.17
SU
PR0025984
001
pH
2021-12-31
8.33
SU
PR0025984
001
pH
2022-01-31
8.51
SU
4
-------
NPDES ID Outfall Parameter Monitoring Period Value Unit
PR0025984
001
pH
2022-02-28
8.48
SU
PR0025984
001
pH
2022-03-31
8.37
SU
PR0025984
001
pH
2022-04-30
8.40
SU
PR0025984
001
pH
2022-05-31
8.47
SU
PR0025984
001
pH
2022-06-30
8.35
SU
PR0025984
001
pH
2022-07-31
8.31
SU
PR0025984
001
pH
2022-08-31
8.30
SU
PR0025984
001
pH
2022-09-30
8.40
SU
PR0025984
001
pH
2022-10-31
8.40
SU
5
-------
R2 Reasonable Potential Tool Parameter Report
Compiled on 20 December, 2022
PR0025984 - 001 : Solids, total suspended
Evaluated from 12/20/2017 to 12/20/2022
FACILITY INFORMATION:
ECOELECTRICA, L.P.
COGENERATION PROJECT
PENUELAS, PR
WQS Import File: PR2022Standards-RPTool.xlsx
SUMMARY STATISTICS:
Number of Samples: 59
Min: 4 mg/L
Mean: 14.11 mg/L
Max: 101 mg/L
WQS - SB: NA mg/L
WQS - SD: NA mg/L
RWC: 172.32 mg/L
1
-------
TIME SERIES
Date
Max: 101 mg/L ...WQS - SB: NA mg/L
- - WQS - SD: NA mg/L RWC: 172.32 mg/L
2
-------
RECEIVING WATER CONCENTRATION CALCULATIONS
assuming a 95% confidence level and a 95% probability basis
calculations from 1991 Technical Support Document pgs 51-55
Number of samples = n
Maximum effluent concentration = max
Dilution Ratio = DR
Coefficient of Variation (CV) = Sn//i or 0.6 when n < 10
Z-statistic = Zx
,, t, ,,,, , exP(Zg5 ln(l + CV2)0-5 0.51n(l + CV2))
Reasonable Potential Multiplier (RPM) = ^-7-= 7-
F V ' exp(Zx ln(l + CV2)0-5 0.51n(l + CV2))
Receiving Water Concentration = max * i?PM/Dilution Ratio
n = 59
max = 101
DR = 1
CV = 1.22
Z95 = 1.645
ZT = 1.084
_ exp(1.6451n(l + 1.222)0'5 - 0.51n(l + 1.222))
~ exp( 1.084ln(l + 1.222)0-5 - 0.51n(l + 1.222))
= 1.71
RWC = 101 * 1.71/1
= 172.32
3
-------
DATA TABLE
NPDES ID
Outfall
Parameter
Monitoring Period
Value
Unit
PR0025984
001
Solids,
total
suspended
2017-12-31
8.80
mg/L
PR0025984
001
Solids,
total
suspended
2018-01-31
9.20
mg/L
PR0025984
001
Solids,
total
suspended
2018-02-28
54.40
mg/L
PR0025984
001
Solids,
total
suspended
2018-03-31
4.00
mg/L
PR0025984
001
Solids,
total
suspended
2018-04-30
4.00
mg/L
PR0025984
001
Solids,
total
suspended
2018-05-31
4.00
mg/L
PR0025984
001
Solids,
total
suspended
2018-06-30
4.00
mg/L
PR0025984
001
Solids,
total
suspended
2018-07-31
6.40
mg/L
PR0025984
001
Solids,
total
suspended
2018-08-31
4.00
mg/L
PR0025984
001
Solids,
total
suspended
2018-09-30
4.00
mg/L
PR0025984
001
Solids,
total
suspended
2018-10-31
4.00
mg/L
PR0025984
001
Solids,
total
suspended
2018-11-30
6.00
mg/L
PR0025984
001
Solids,
total
suspended
2018-12-31
13.60
mg/L
PR0025984
001
Solids,
total
suspended
2019-01-31
7.60
mg/L
PR0025984
001
Solids,
total
suspended
2019-02-28
4.00
mg/L
PR0025984
001
Solids,
total
suspended
2019-03-31
4.00
mg/L
PR0025984
001
Solids,
total
suspended
2019-04-30
12.00
mg/L
PR0025984
001
Solids,
total
suspended
2019-05-31
4.00
mg/L
PR0025984
001
Solids,
total
suspended
2019-06-30
4.00
mg/L
PR0025984
001
Solids,
total
suspended
2019-07-31
10.80
mg/L
PR0025984
001
Solids,
total
suspended
2019-08-31
4.80
mg/L
PR0025984
001
Solids,
total
suspended
2019-09-30
6.00
mg/L
PR0025984
001
Solids,
total
suspended
2019-10-31
6.00
mg/L
PR0025984
001
Solids,
total
suspended
2019-11-30
4.00
mg/L
PR0025984
001
Solids,
total
suspended
2019-12-31
8.00
mg/L
PR0025984
001
Solids,
total
suspended
2020-01-31
8.80
mg/L
PR0025984
001
Solids,
total
suspended
2020-02-29
6.00
mg/L
PR0025984
001
Solids,
total
suspended
2020-03-31
14.80
mg/L
PR0025984
001
Solids,
total
suspended
2020-04-30
10.80
mg/L
PR0025984
001
Solids,
total
suspended
2020-05-31
13.20
mg/L
PR0025984
001
Solids,
total
suspended
2020-06-30
17.60
mg/L
PR0025984
001
Solids,
total
suspended
2020-07-31
20.70
mg/L
PR0025984
001
Solids,
total
suspended
2020-08-31
14.40
mg/L
PR0025984
001
Solids,
total
suspended
2020-09-30
20.40
mg/L
PR0025984
001
Solids,
total
suspended
2020-10-31
4.40
mg/L
PR0025984
001
Solids,
total
suspended
2020-11-30
16.80
mg/L
PR0025984
001
Solids,
total
suspended
2020-12-31
9.60
mg/L
PR0025984
001
Solids,
total
suspended
2021-01-31
17.60
mg/L
PR0025984
001
Solids,
total
suspended
2021-02-28
9.20
mg/L
PR0025984
001
Solids,
total
suspended
2021-03-31
23.60
mg/L
PR0025984
001
Solids,
total
suspended
2021-04-30
16.40
mg/L
PR0025984
001
Solids,
total
suspended
2021-05-31
20.80
mg/L
PR0025984
001
Solids,
total
suspended
2021-06-30
18.40
mg/L
PR0025984
001
Solids,
total
suspended
2021-07-31
42.40
mg/L
PR0025984
001
Solids,
total
suspended
2021-08-31
22.40
mg/L
PR0025984
001
Solids,
total
suspended
2021-09-30
12.00
mg/L
PR0025984
001
Solids,
total
suspended
2021-10-31
65.60
mg/L
PR0025984
001
Solids,
total
suspended
2021-11-30
101.00
mg/L
PR0025984
001
Solids,
total
suspended
2021-12-31
4.00
mg/L
PR0025984
001
Solids,
total
suspended
2022-01-31
4.80
mg/L
4
-------
NPDES ID
Outfall
Parameter
Monitoring Period
Value
Unit
PR0025984
001
Solids, total suspended
2022-02-28
8.48
mg/L
PR0025984
001
Solids, total suspended
2022-03-31
11.60
mg/L
PR0025984
001
Solids, total suspended
2022-04-30
21.20
mg/L
PR0025984
001
Solids, total suspended
2022-05-31
4.00
mg/L
PR0025984
001
Solids, total suspended
2022-06-30
4.00
mg/L
PR0025984
001
Solids, total suspended
2022-07-31
51.60
mg/L
PR0025984
001
Solids, total suspended
2022-08-31
5.60
mg/L
PR0025984
001
Solids, total suspended
2022-09-30
4.00
mg/L
PR0025984
001
Solids, total suspended
2022-10-31
4.80
mg/L
5
-------
R2 Reasonable Potential Tool Parameter Report
Compiled on 20 December, 2022
PR0025984 - 001 : Sulfide-hydrogen sulfide [undissociated]
Evaluated from 12/20/2017 to 12/20/2022
FACILITY INFORMATION:
ECOELECTRICA, L.P.
COGENERATION PROJECT
PENUELAS, PR
WQS Import File: PR2022Standards-RPTool.xlsx
SUMMARY STATISTICS:
Number of Samples: 4
Min: 0.004 ug/L
Mean: 2.5 ug/L
Max: 4 ug/L
WQS - SB: 2 ug/L
WQS - SD: 2 ug/L
RWC: 10.34 ug/L
1
-------
TIME SERIES
10.0
7.5
5.0
2.5
0.0
3
Cf.)
2019
2020
2021
2022
Date
Max: 4 ug/L
.WQS - SB: 2 ug/L
- WQS - SD: 2 ug/L
RWC: 10.34 ug/L
2
-------
RECEIVING WATER CONCENTRATION CALCULATIONS
assuming a 95% confidence level and a 95% probability basis
calculations from 1991 Technical Support Document pgs 51-55
Number of samples = n
Maximum effluent concentration = max
Dilution Ratio = DR
Coefficient of Variation (CV) = Sn//i or 0.6 when n < 10
Z-statistic = Zx
,, t, ,,,, , exP(Zg5 ln(l + CV2)0-5 0.5 ln(l + CV2))
Reasonable Potential Multiplier (RPM) = r-rj
F V ' exp(Zx ln(l + CV2)0-5 0.51n(l + CV2))
Receiving Water Concentration = max * RPM/Dilution Ratio
n
= 4
max
= 4
DR
= 1
CV
= 0.6
^95
= 1.645
Zx
= -0.068
_ exp(1.6451n(l + 0.62)0'5 - 0.51n(l + 0.62))
~ exp(0.068ln(l + 0.62)0-5 - 0.51n(l + 0.62))
= 2.59
RWC = 4 * 2.59/1
= 10.34
3
-------
DATA TABLE
NPDES ID
Outfall
Parameter
Monitoring Period
Value
Unit
PR0025984
001
Sulfide-hydrogen sulfide [undissociated]
2018-11-30
3.000
ug/L
PR0025984
001
Sulfide-hydrogen sulfide [undissociated]
2019-11-30
3.000
ug/L
PR0025984
001
Sulfide-hydrogen sulfide [undissociated]
2020-11-30
4.000
ug/L
PR0025984
001
Sulfide-hydrogen sulfide [undissociated]
2021-11-30
0.004
ug/L
4
-------
R2 Reasonable Potential Tool Parameter Report
Compiled on 15 May, 2023
PR0025984 - 001 : Surfactants [MBAS]
Evaluated from 05/15/2018 to 05/15/2023
FACILITY INFORMATION:
ECOELECTRICA, L.P.
COGENERATION PROJECT
PENUELAS, PR
WQS Import File: PR2022Standards-RPTool.xlsx
SUMMARY STATISTICS:
Number of Samples: 5
Min: 0.03 ug/L
Mean: 18.21 ug/L
Max: 42 ug/L
WQS - SB: 500 ug/L
WQS - SD: 100 ug/L
RWC: 97.63 ug/L
1
-------
TIME SERIES
500
O)
3
400
^ 300
CO
200
c/)
-i<
c
CO
-I<
o
£
3 100
Cf.)
0
2019
2020
2021
Date
2022
2023
Max: 42 ug/L
...WQS - SB: 500 ug/L
- WQS - SD: 100 ug/L
RWC: 97.63 ug/L
2
-------
RECEIVING WATER CONCENTRATION CALCULATIONS
assuming a 95% confidence level and a 95% probability basis
calculations from 1991 Technical Support Document pgs 51-55
Number of samples = n
Maximum effluent concentration = max
Dilution Ratio = DR
Coefficient of Variation (CV) = Sn//i or 0.6 when n < 10
Z-statistic = Zx
,, t, ,,,, , exP(Zg5 ln(l + CV2)0-5 0.51n(l + CV2))
Reasonable Potential Multiplier (RPM) = ^-7-=
F V ' exp(Zx ln(l + CV2)0-5 0.51n(l + CV2))
Receiving Water Concentration = max * RPM/Dilution Ratio
n = 5
max = 42
DR = 1
CV = 0.6
Z95 = 1.645
ZT = 0.124
_ exp(1.6451n(l + 0.62)0'5 - 0.51n(l + 0.62))
~ exp(0.1241n(l + O.62)0-5 - 0.51n(l + 0.62))
= 2.32
RWC = 42 * 2.32/1
= 97.63
3
-------
DATA TABLE
NPDES ID
Outfall
Parameter
Monitoring Period
Value
Unit
PR0025984
001
Surfactants
[MBAS]
2018-11-30
29.00
ug/L
PR0025984
001
Surfactants
[MBAS]
2019-11-30
10.00
ug/L
PR0025984
001
Surfactants
[MBAS]
2020-11-30
10.00
ug/L
PR0025984
001
Surfactants
[MBAS]
2021-11-30
0.03
ug/L
PR0025984
001
Surfactants
[MBAS]
2022-11-30
42.00
ug/L
4
-------
R2 Reasonable Potential Tool Parameter Report
Compiled on 20 December, 2022
PR0025984 - 001 : Temperature, water deg. centigrade
Evaluated from 12/20/2017 to 12/20/2022
FACILITY INFORMATION:
ECOELECTRICA, L.P.
COGENERATION PROJECT
PENUELAS, PR
WQS Import File: PR2022Standards-RPTool.xlsx
SUMMARY STATISTICS:
Number of Samples: 59
Min: 27 deg C
Mean: 29.75 deg C
Max: 33.1 deg C
WQS - SB: 30 deg C
WQS - SD: 30 deg C
RWC: 33.8 deg C
1
-------
TIME SERIES
Date
Max: 33.1 deg C ...WQS - SB: 30 deg C
- WQS - SD: 30 deg C RWC: 33.8 deg C
2
-------
RECEIVING WATER CONCENTRATION CALCULATIONS
assuming a 95% confidence level and a 95% probability basis
calculations from 1991 Technical Support Document pgs 51-55
Number of samples = n
Maximum effluent concentration = max
Dilution Ratio = DR
Coefficient of Variation (CV) = Sn//i or 0.6 when n < 10
Z-statistic = Zx
,, t, ,,,, , exP(Zg5 ln(l + CV2)0-5 0.51n(l + CV2))
Reasonable Potential Multiplier (RPM) = ^-7-= 7-
F V ' exp(Zx ln(l + CV2)0-5 0.51n(l + CV2))
Receiving Water Concentration = max * i?PM/Dilution Ratio
n = 59
max = 33.1
DR = 1
CV = 0.04
Z95 = 1.645
ZT = 1.084
_ exp(1.6451n(l + 0.042)0'5 - 0.51n(l + 0.042))
~ exp( 1.084ln(l + 0.042)0-5 - 0.51n(l + 0.042))
= 1.02
RWC = 33.1 * 1.02/1
= 33.8
3
-------
DATA TABLE
NPDES ID
Outfall
Parameter
Monitoring Period
Value
Unit
PR0025984
001
Temperature,
water
deg.
centigrade
2017-12-31
30.6
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2018-01-31
30.6
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2018-02-28
28.3
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2018-03-31
28.9
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2018-04-30
29.4
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2018-05-31
28.9
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2018-06-30
30.2
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2018-07-31
30.1
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2018-08-31
29.5
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2018-09-30
30.4
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2018-10-31
29.5
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2018-11-30
30.0
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2018-12-31
29.2
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2019-01-31
27.0
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2019-02-28
27.2
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2019-03-31
27.9
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2019-04-30
28.2
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2019-05-31
30.0
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2019-06-30
29.4
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2019-07-31
30.2
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2019-08-31
30.8
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2019-09-30
30.3
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2019-10-31
31.3
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2019-11-30
29.3
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2019-12-31
30.2
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2020-01-31
29.6
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2020-02-29
29.7
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2020-03-31
28.6
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2020-04-30
29.9
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2020-05-31
30.2
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2020-06-30
30.1
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2020-07-31
30.3
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2020-08-31
31.1
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2020-09-30
30.8
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2020-10-31
30.1
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2020-11-30
29.4
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2020-12-31
28.9
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2021-01-31
28.3
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2021-02-28
28.3
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2021-03-31
28.4
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2021-04-30
29.5
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2021-05-31
30.2
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2021-06-30
30.8
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2021-07-31
33.1
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2021-08-31
31.1
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2021-09-30
31.9
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2021-10-31
31.1
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2021-11-30
29.7
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2021-12-31
30.2
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2022-01-31
28.3
deg C
4
-------
NPDES ID Outfall Parameter
Monitoring Period Value Unit
PR0025984
001
Temperature,
water
deg.
centigrade
2022-02-28
29.4
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2022-03-31
29.7
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2022-04-30
29.4
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2022-05-31
29.8
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2022-06-30
30.6
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2022-07-31
29.2
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2022-08-31
29.2
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2022-09-30
29.4
deg C
PR0025984
001
Temperature,
water
deg.
centigrade
2022-10-31
31.8
deg C
5
-------
R2 Reasonable Potential Tool Parameter Report
Compiled on 20 December, 2022
PR0025984 - 001 : Turbidity
Evaluated from 12/20/2017 to 12/20/2022
FACILITY INFORMATION:
ECOELECTRICA, L.P.
COGENERATION PROJECT
PENUELAS, PR
WQS Import File: PR2022Standards-RPTool.xlsx
SUMMARY STATISTICS:
Number of Samples: 59
Min: 0.55 NTU
Mean: 2.74 NTU
Max: 5.68 NTU
WQS - SB: 10 NTU
WQS - SD: 50 NTU
RWC: 6.85 NTU
1
-------
TIME SERIES
50 -
40
30
5 20
10
0
2018
2019
2020 2021
Date
2022
2023
Max: 5.68 NTU
...WQS - SB: 10 NTU
- WQS - SD: 50 NTU
RWC: 6.85 NTU
2
-------
RECEIVING WATER CONCENTRATION CALCULATIONS
assuming a 95% confidence level and a 95% probability basis
calculations from 1991 Technical Support Document pgs 51-55
Number of samples = n
Maximum effluent concentration = max
Dilution Ratio = DR
Coefficient of Variation (CV) = Sn//i or 0.6 when n < 10
Z-statistic = Zx
,, t, ,,,, , exP(Zg5 ln(l + CV2)0-5 0.51n(l + CV2))
Reasonable Potential Multiplier (RPM) = ^-7-= 7-
F V ' exp(Zx ln(l + CV2)0-5 0.51n(l + CV2))
Receiving Water Concentration = max * i?PM/Dilution Ratio
n = 59
max = 5.68
DR = 1
CV = 0.34
Z95 = 1.645
ZT = 1.084
_ exp(1.6451n(l + 0.342)0'5 - 0.51n(l + 0.342))
~ exp( 1.084ln(l + 0.342)0-5 - 0.51n(l + 0.342))
= 1.21
RWC = 5.68* 1.21/1
= 6.85
3
-------
DATA TABLE
NPDES ID
Outfall
Parameter
Monitoring Period
Value
Unit
PR0025984
001
Turbidity
2017-12-31
2.39
NTU
PR0025984
001
Turbidity
2018-01-31
2.12
NTU
PR0025984
001
Turbidity
2018-02-28
2.13
NTU
PR0025984
001
Turbidity
2018-03-31
3.64
NTU
PR0025984
001
Turbidity
2018-04-30
1.18
NTU
PR0025984
001
Turbidity
2018-05-31
3.08
NTU
PR0025984
001
Turbidity
2018-06-30
3.32
NTU
PR0025984
001
Turbidity
2018-07-31
1.97
NTU
PR0025984
001
Turbidity
2018-08-31
1.99
NTU
PR0025984
001
Turbidity
2018-09-30
2.41
NTU
PR0025984
001
Turbidity
2018-10-31
2.38
NTU
PR0025984
001
Turbidity
2018-11-30
3.14
NTU
PR0025984
001
Turbidity
2018-12-31
3.26
NTU
PR0025984
001
Turbidity
2019-01-31
2.33
NTU
PR0025984
001
Turbidity
2019-02-28
3.22
NTU
PR0025984
001
Turbidity
2019-03-31
3.97
NTU
PR0025984
001
Turbidity
2019-04-30
2.51
NTU
PR0025984
001
Turbidity
2019-05-31
3.00
NTU
PR0025984
001
Turbidity
2019-06-30
2.62
NTU
PR0025984
001
Turbidity
2019-07-31
2.62
NTU
PR0025984
001
Turbidity
2019-08-31
3.66
NTU
PR0025984
001
Turbidity
2019-09-30
2.93
NTU
PR0025984
001
Turbidity
2019-10-31
3.92
NTU
PR0025984
001
Turbidity
2019-11-30
3.10
NTU
PR0025984
001
Turbidity
2019-12-31
2.32
NTU
PR0025984
001
Turbidity
2020-01-31
2.36
NTU
PR0025984
001
Turbidity
2020-02-29
1.87
NTU
PR0025984
001
Turbidity
2020-03-31
2.10
NTU
PR0025984
001
Turbidity
2020-04-30
1.43
NTU
PR0025984
001
Turbidity
2020-05-31
3.79
NTU
PR0025984
001
Turbidity
2020-06-30
3.03
NTU
PR0025984
001
Turbidity
2020-07-31
3.34
NTU
PR0025984
001
Turbidity
2020-08-31
3.66
NTU
PR0025984
001
Turbidity
2020-09-30
4.22
NTU
PR0025984
001
Turbidity
2020-10-31
2.52
NTU
PR0025984
001
Turbidity
2020-11-30
3.22
NTU
PR0025984
001
Turbidity
2020-12-31
3.64
NTU
PR0025984
001
Turbidity
2021-01-31
4.17
NTU
PR0025984
001
Turbidity
2021-02-28
3.18
NTU
PR0025984
001
Turbidity
2021-03-31
1.58
NTU
PR0025984
001
Turbidity
2021-04-30
1.78
NTU
PR0025984
001
Turbidity
2021-05-31
2.56
NTU
PR0025984
001
Turbidity
2021-06-30
4.04
NTU
PR0025984
001
Turbidity
2021-07-31
5.68
NTU
PR0025984
001
Turbidity
2021-08-31
1.96
NTU
PR0025984
001
Turbidity
2021-09-30
1.67
NTU
PR0025984
001
Turbidity
2021-10-31
3.97
NTU
PR0025984
001
Turbidity
2021-11-30
1.39
NTU
PR0025984
001
Turbidity
2021-12-31
1.50
NTU
PR0025984
001
Turbidity
2022-01-31
2.20
NTU
4
-------
NPDES ID Outfall Parameter Monitoring Period Value Unit
PR0025984
001
Turbidity
2022-02-28
0.55
NTU
PR0025984
001
Turbidity
2022-03-31
2.13
NTU
PR0025984
001
Turbidity
2022-04-30
3.70
NTU
PR0025984
001
Turbidity
2022-05-31
2.60
NTU
PR0025984
001
Turbidity
2022-06-30
4.00
NTU
PR0025984
001
Turbidity
2022-07-31
1.90
NTU
PR0025984
001
Turbidity
2022-08-31
2.20
NTU
PR0025984
001
Turbidity
2022-09-30
1.90
NTU
PR0025984
001
Turbidity
2022-10-31
2.50
NTU
5
-------
R2 Reasonable Potential Tool Parameter Report
Compiled on 20 December, 2022
PR0025984 - 001 : Zinc, total [as Zn]
Evaluated from 12/20/2017 to 12/20/2022
FACILITY INFORMATION:
ECOELECTRICA, L.P.
COGENERATION PROJECT
PENUELAS, PR
WQS Import File: PR2022Standards-RPTool.xlsx
SUMMARY STATISTICS:
Number of Samples: 18
Min: 3 ug/L
Mean: 11.39 ug/L
Max: 44 ug/L
WQS - SB: 85.62 ug/L
WQS - SD: NA ug/L
RWC: 67.75 ug/L
1
-------
TIME SERIES
Date
Max: 44 ug/L ...WQS - SB: 85.62 ug/L
- - WQS - SD: NA ug/L RWC: 67.75 ug/L
2
-------
RECEIVING WATER CONCENTRATION CALCULATIONS
assuming a 95% confidence level and a 95% probability basis
calculations from 1991 Technical Support Document pgs 51-55
Number of samples = n
Maximum effluent concentration = max
Dilution Ratio = DR
Coefficient of Variation (CV) = Sn//i or 0.6 when n < 10
Z-statistic = Zx
,, t, ,,,, , exP(Zg5 ln(l + CV2)0-5 0.51n(l + CV2))
Reasonable Potential Multiplier (RPM) = ^-7-= 7-
F V ' exp(Zx ln(l + CV2)0-5 0.51n(l + CV2))
Receiving Water Concentration = max * i?PM/Dilution Ratio
n = 18
max = 44
DR = 1
CV = 0.79
Z95 = 1.645
ZT = 1.022
_ exp(1.6451n(l + 0.792)0'5 - 0.51n(l + 0.792))
~ exp(1.0221n(l + 0.792)0-5 - 0.51n(l + 0.792))
= 1.54
RWC = 44 * 1.54/1
= 67.75
3
-------
DATA TABLE
NPDES ID
Outfall
Parameter
Monitoring Period
Value
Unit
PR0025984
001
Zinc,
total
[as
Zn]
2018-02-28
8
ug/L
PR0025984
001
Zinc,
total
[as
Zn]
2018-05-31
4
ug/L
PR0025984
001
Zinc,
total
[as
Zn]
2018-08-31
6
ug/L
PR0025984
001
Zinc,
total
[as
Zn]
2018-11-30
44
ug/L
PR0025984
001
Zinc,
total
[as
Zn]
2019-02-28
3
ug/L
PR0025984
001
Zinc,
total
[as
Zn]
2019-05-31
9
ug/L
PR0025984
001
Zinc,
total
[as
Zn]
2019-08-31
18
ug/L
PR0025984
001
Zinc,
total
[as
Zn]
2019-11-30
12
ug/L
PR0025984
001
Zinc,
total
[as
Zn]
2020-02-29
3
ug/L
PR0025984
001
Zinc,
total
[as
Zn]
2020-05-31
10
ug/L
PR0025984
001
Zinc,
total
[as
Zn]
2020-11-30
12
ug/L
PR0025984
001
Zinc,
total
[as
Zn]
2021-02-28
12
ug/L
PR0025984
001
Zinc,
total
[as
Zn]
2021-05-31
12
ug/L
PR0025984
001
Zinc,
total
[as
Zn]
2021-08-31
12
ug/L
PR0025984
001
Zinc,
total
[as
Zn]
2021-11-30
10
ug/L
PR0025984
001
Zinc,
total
[as
Zn]
2022-02-28
10
ug/L
PR0025984
001
Zinc,
total
[as
Zn]
2022-05-31
10
ug/L
PR0025984
001
Zinc,
total
[as
Zn]
2022-08-31
10
ug/L
4
------- |