Fl0024805 Part I Of Iii

UNITED S T A T E S ENVIRONMENTAL PROTECTION A G E N C Y REGION 4 ATLANTAFEDERALCENTER 61 FORSYTH STREET ATLANTA, GEORGIA 30303-8960

I

AMENDMENT TO THE FACT SHEET AT THE TIME OF FINAL PEFNIT REISSUANCE APPLICATION NO: FL0024805 NAME OF APPLICANT: Metropolitan Dade County Central Wastewater Treatment Plant at Virginia Key Miami, Florida

-

1.

Chan-oes to Permit from Draft Permit to Final Permit Sta-oe: None.

-,'

I

2.

,

Public Comrnect: None.

3.

State Certification: Not applicable.

lntamet Address (URL)

.

hHp://www.epa.gov

RecycledlRecyclabla .Printed w l h Vegetable Oil Based Inks on Recycled Paper (Minimum 254'. Posfconsumer)

~

~

.~~ ~-~

~

----

~

~

.~

-

-

~

Major Rlunicipal Facility

UNITED STATES ENVIRONMENTAL PROTECTION AGENCY REGION N AUTHORIZATION TO DISCHARGE UNDER THE NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM In compliance with the provisions of the Clean Water Act, as amended (33 U.S.C. 1251 et seq.; the "Act"), Miami-Dade Water and Sewer Department 4200 Salzedo Street Coral Gables, Florida 33146

-

-

is authorized to discharge from a facility located at

Central District Wastewater Treatment Plant a t Virginia Key Miami, Florida to receiving waters named Outfall 001: The Atlantic Ocean in accordance with effluent limitations, monitoring requirements and other conditions set forth herein. The permit consists of this cover sheet, Part I &pages, Part I1 1 6pages, Part I11 5 pages, and Part IV 1_ page.

This permit shall become effective on July Y, 1999. This permit and the authorization to discharge shall expire at midnight, June 30,2004.

APR 1 6 199'9 Date Issued

7

Water Management Division

r

--

Y

Page I- 1 Permit No. FLU024805

(?,

(--

PART 1 A. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - Final 1.

These limitations are to be achieved by the effective date of the permit, ancl sh;d remain in effect until perniit espir;ttion for outfall Serial Number 001, sanitary wastewater. Such discharges shall be limited and monitored by the permittee as specified below:

PARAMETERS

Annual Averwe Flow, MGD

MONITORING REOUIREMENTS

DISCHARGE LIMITATIONS Other Units (Specify)

Report

Monthly Avere~e

Weekly Averaee

Report

Report

Continuous

Measurement Sample Frequency

a

See Item LA. I I

Sampling Point Effluent

Carbonaceous Biochemical Oxygen Den~and(5-Day)

---

25.0 ing/l Report

40.0 mg/l Report

7 clayslweek 24-hr 7 dayslweek Coniposite

Effluent Influent

Total Suspended Solids

---

30.0 mgll Report

45.0 mg/l Report

7 dayslweek 24-hr. 7 dayslweek Composite

Effluent Influent

See Item 3 on Page 1-2

7 dayslweek Grab

Effluent

See Item 4 on Page 1-2

Continuous

Recorder

Effluent

7 dayslweek

Grab

Effluent

-.

l/year

Grab

Effluent

--

l/nionLh

24-hr. Composite

Eftluent

--

1f~nonth

24-111. Coniposile

Effluent

,

Fecal Coliforrn Bacteria (#/I 00 1111) PI-1

,

I

Total Residual Chlorine (report daily maximum - mdl) Acute Whole Effluent Toxicity

-.

See Part IV

Total Nitrogen, as N [lllgJI)

. .

Report

Total Phosphorus, as P (111d1)

--

Report

.

Page 1-2 Permit No. FL003J.805 PART I (CONTINUATION) EFFLUENT LIMITATIONS AND MONITORING REQ~IREMENTS 2.

In addition to the specified limits, the monthly average CBOD, and TSS concentrations shall not exceed 15% of the respective influent values (i.e., 85% removal). For the term of this permit, the permittee shall exclude kom the monthly F/o removal calculations any day($ for which a major rainfall event, tropical storm, or hurricane has occurred and with an effluent average daily flow (ADF) greater than or equal to 171 million gallons per day (MGD). For such "excluded" day(s), the monthly average % removal shall be equal to or greater than the value calculated as: O/C removal = 100 x [l - (45 x 8.34 x (Q,

+ Q2 + ...~ , j ) t ( nx L,,)]

where Q = average daily flow, MGD; n = # of days for which a major rainfall event. tropical storm, or hurricane has occurred & where the ADF is 2 17 1 MGD; L, = typical loading for the five year period preceding issuance of this and provision (for CBOD,, 116,000 #/day; for TSS, 119,000 #/day) The % removal for "excluded" and "non-excluded days" and the calculated 5% removal for "excluded" days based on the above formula shall be reported on a Discharge Monitoring Report ( D m ) Form (EPA #3320-1). For each month where an "excluded" 5% removal is applicable, the permittee shall also report the number of inches of rainfall for each excluded day. As part of the next permit reneual application. the permittee shall reassess and include an evaluation of the L, values for CBOD? and TSS based on the loadings for the five year period preceding that application.

-_

,_ I,Li

3.

The permittee shall monitor the effluent for fecal coliform bacteria via grab sample, 7 dayslweek, and shall report the geometric mean of the samples collected in a given month as well as the daily maximumvalue in a given month (#I100 ml).

4.

The pH shall be monitored continuously via a recorder. The pH values shall not deviate outside the range of 6.0 standard units to 9.0 standard units more than 1% of the time in any calendar month and no individual excursion shall exceed 60 minutes. An "excursion" is an unintentional and temporary incident in which the pH value of discharged wastewater exceeds the range set forth in t k s permit.

5.

There shall be no discharge of floating solids or visible foam in other than trace amounts.

6.

The effluent shall not cause a visible sheen on the receiving water

Page 1-3 Permit No. KO024805 PART I (CONTINUATION) EFFJJJENT LIMITATIONS AND MONITORING REQUIREMENTS

7.

Any bypass of the treatment facility which is not included in the effluent monitored above, is to be monitored for flow and all other parameters (except acute whole effluent toxicity). For parameters other than flow. at least one grab sample per day shall be monitored. Daily flow shall be monitored or estimated, as appropriate, to obtain reportable data. All results shall be reported on a DMR Form.

8.

Testing for total residual chlorine shall be conducted according to either the low-level amperometric titration method.or the DPD colorimetric method as specified in Section 4500-C1 E. or 4500-C1 G., respectively, Standard Methods for - the Examination of Water and Wastewater, 19th Edition (or the most current edition). -

9.

The permittee shall identfy all wastewater discharges. at locations not authorized as permitted outfalls, that occur prior to the headworks of the wastewater treatment plant covered by this permit. The permittee shall submit, with the scheduled DMR, the following information for each discharge event at each source that occurs during the reporting period covered by the DMR: a.) the cause of the discharge; b.) duration and volume (estimate if unknown); c.) description of the source, e.g., manhole cover, pump station; d.) type of collection system that overflowed, ie., combined or separate; e.) location by street address, or any other appropriate method: f.) date of event: g.) the ultimate destination of the flow, e.g.. surface waterbody, land use location, via municipal separate storm sewer system to a surface waterbody, (show location on a USGS map or copy thereof); and h.) corrective actions or plans to eliminate future dischaqes. The permittee shall refer to Part I1 of this permit, paragraph D.X. Twenty-Four Hour Reporting, to report any unpermitted discharge events which may endanger health or the environment. Submittal or reporting of any of this information does not provide relief from any subsequent enforcement actions for unpermitted discharges to waters of the U.S.

Page 1-4 Permit No. FL0024805 PART I (CONTINUATION) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS

10.

If the results for a given sample analysis are such that any parameter (other than fecal coliform) is not detected at or above the minimum level for the test method used, a value of zero will be used for that sample in calculatino an arithmetic mean value for the parameter. If the resulting calculated arithmetic mean value for that reporting period is zero, the permittee shall rzoort "NODI=Bfl on the DMR. For fecal coliform, a value of 1.0 shall be used in calculatino the geometric mean. If the resulting fecal coliform mean "NODI=BUon the DMR. For each quantitative value is 1.0, the permittee shallsample value that is not detectable, the test method used and the minimum level for that method for that parameter shall be attached to and submitted-with the DIWI. The permittee shall then be considered in compliance with the appropriate effluent limitation and/or reporting requirement.

1I.

From the permit effective date until the installation of an operational ultrasonic meter in the 120-inch outfall, effluent flows shall be estimated by and reported as the sum of all influent flows. The permittee shall n o t e the permitting authority in writing within two weeks of the ultrasonic meter becoming operational. From that date until permit expiration, effluent flows shall be measured and reported based on readings from the C is not operational by April 1, 2000, the permittee ultrasonic meter. If the U ~ ~ I ~ S O Nmeter shall submit monthly progress reports regarding its installation and efforts to make it operational.

Page 1-5 Permit No. FL.0024805

B. SLUDGE MANAGEMENT PRACTICES 1.

Annually, the permittee shall sample and analyze the sludge and report to EPA the quantitative data for the 125 priority pollutants listed in 40 CFR Part 122, Appendix D, Tables I1 and 111. Quantitative data for molybdenum shall also be submitted. Qualitative data for 2.3.7.8-tetrachlorodibenzo-p-dioxin(TCDD) shall also be submitted if the permittee knows or has reason to believe that TCDD is or may be present in the sludge. a.

(C:

iCj

The permittee shall submit the above data within 1 year of the effective date of this perrpit, and report annually thereafter.

2.

The permittee shall submit within 30 days of the effective date efthis permit the sludge production volume (specify if daily or annual; if actual volume is not known, estimate the quantity of sludge being handled and so indicate) and the sludge disposal practice.

3.

The permittee shall provide sludge inventory data to the State and EPA, as part of EPA's inventory updates as requested. The data should include. but not be limited to, sludge quantity and characteristics.

4.

Reopener. If an applicable %cceptable management practice" or numerical limitation for pollutants in sewage sludge promulgated under Section 405(d)(2) of the Clean Water Act, as amended by the Water Quality Act of 1987, is more stringent than the sludge pollutant limit or acceptable management practice in this permit or controls a pollutant not limited in this permit. this permit shall be promptly modified or revoked and reissued to conform to the requirements promulgated under Section 405(d)(2). The permittee shall comply with the limitations by no later than the compliance deadline specified in the applicable regulations as required by Section 405(d)(2)(D) of the Clean Water Act.

5.

Notice of chance in sludee disposal practice. The permitteeshall give prior notice to the Regional Administrator of any change planned in the permittee's sludge disposal practice.

6.

Cause for modification. 40 CFR $ 122.62(a)(1) provides that the following is a cause for modification but not revocation and reissuance of permits except when the permittee requests or agrees. (a) Alterations. There are material and substantial changes or additions to the permitted facility or activity which occurred after permit issuance which justify the application of permit conditions that are different or absent in the existing permit.

7.

Upon review of information provided by the permittee as required by the above items, or results k o m an on-site inspection, the permit shall be subject to modification to incorporate appropriate requirements.

Page 1-6 Permit No. KO024805

8.

Should the permittee dispose of the sewage sludge in a landfill. the permittee shall perform a TCLP test in accordance with 40 CFR $261, as published on March 29, 1990, Volume 55, Number 61, Federal Re~ister,11798. In addition, the test shall be performed if the permittee knows or has reason to believe that its sewage sludge may fail the TCLP test as a result of changes in its sewage sludge characteristics from prior tests. The test results shall be reported on the anniversary of the effective date of this permit. The permittee shall submit a separate report attached to the DMR which shows the date of the test and the test results. Should a sewage sludge fail the TCLP test, the permittee shall immediately halt all sludge use or disposal activities. In addition, the permittee shall submit written notification to EPA within ten (10) calendar days of test failure. The permittee may resume its sludge use or disposal activities only after passing a subsequent TCLP test. Test results from any additional tests that are performed shall also be reported. -

9.

Should the permittee's sewage sludge be disposed of in a solid-waste land£ill, the permittee shall demonstrate the absence of free liquids in its sewage sludge through the utilization of Test Method 9095 (Paint Filter Liquids Test) as described in "Test Methods for Evaluating Solid Wastes, PhysicQChemical Methods" (EPA Publication No. SW-846). These tests shall be conducted on representative samples of all sewage sludge prior to each disposal at solid-waste landfills. A successful demonstration shall be performed before the permittee's sewage sludge is allowed to be disposed of at a solid-waste landfiu. The permittee shall: 1) report on the DMR only the number of tests that failed during the quarter and 2) in any quarter where one or more tests failed, submit a separate report attached to the DMR which shows the date of each failed and subsequent passing test along with their respective results. Prior notice shall be given to the EPA of any changes in disposal practice resulting from test failures.

10.

The permittee shall ensure that the sludge generated by its facility will be applied to lands and/or composted in accordance with the requirements of 40 CFR $503.

11.

Based on Table 1 of 40 CFR $503.16, the frequency of monitorinpfor all requirements of 40 CFR $503.16(a) shall be once per sivty days (six times per year).

12.

The permittee shall meet all applicable notification requirements of 41) CFR $$503.17(a)(l) and (2).

.

-

Page 1-7 Permit No. I30014805

11.

The following sludge requirement shall apply when sewage sludge goes to a municipal solid waste landfill: In accordance with 40 CFR $503.4, the permittee shall ensure that the ownrr/operator of the municipal solid waste landfills meets the requirements of 40 CFR Part 258.

12.

This permit does not allow the land application of domestic septage.

Page 1-8 Permit No. FLO073X05

C. SCHEDULE OF COMPLIANCE

1.

The permittee shall achieve compliance with the effluent limitations specified for discharges in accordance with the following schedule: Operational level attained . . . . .Effective Date of Permit

2.

No later than 14 calendar days following a date identified in the above schedule of compliance, the permittee shall submit either a report of progress or, in the case of specific actions being required by identified dates, a written notice of compliance or noncompliance. In the latter case, the notice shall include the cause of noncompliance, any remedial actions taken, and the probability of meeting the next scheduled requirement.