Q and A 22 May 2020 Attach 1 - 2014-2019 DP-873.pdf

SUSANA MARTINEZ

Governor

JOHN A. SANCHEZ

Lieutenant Governor

March 31, 2014

NEW MEXICO

ENVIRONMENT DEPARTMENT

Ground Water Quality Bureau

Harold Runnels Building 1190 St. Francis Drive

P.O. Box 5469, Santa Fe, New Mexico 87502-5469 Phone (505) 827-2855 Fax (505) 827-2965 www.nmenv.state.nm.us

CERTIFIED MAIL - RETURN RECEIPT REQUESTED

Colonel Tony D. Bauernfeind, Commander, 27th Special Operations Wing Cannon Air Force Base 100 S Air Commando Way, Suite 100 Cannon AFB, NM 88103-5214

RYAN FLYNN

Secreta1y

BUTCH TONGA TE

Deputy Secretary

RE: Discharge Permit Renewal and Modification, DP-873, Cannon Air Force Base

Dear Col. Bauernfeind:

The New Mexico Envirorunent Department (NMED) issues the enclosed Discharge Permit Renewal and Modification, DP-873, to Cannon Air Force Base (permittee) pursuant to the New Mexico Water Quality Act (WQA), NMSA 1978 §§74-6-1 through 74-6-17, and the New Mexico Water Quality Control Commission (WQCC) Regulations, 20.6.2 NMAC.

The Discharge Permit contains terms and conditions that shall be complied with by the permittee and are enforceable by NMED pursuant to Section 20.6.2.3104 NMAC, WQA, NMSA 1978 §74-6-5 and §74-6-10. Please be aware that this Discharge Permit may contain conditions that require the permittee to implement operational, monitoring or closure actions by a specified deadline. Such conditions are listed at the beginning of the operational, monitoring and closure plans ofthis Discharge Permit.

Issuance of this Discharge Permit does not relieve the perrnittee of the responsibility to comply with the WQA, WQCC Regulations, and any other applicable federal, state and/or local laws and regulations, such as zoning requirements and nuisance ordinances.

Pursuant to Paragraph ( 4) of Subsection H of 20.6.2.3109 NMAC, the term of the Discharge Permit shall be five years from the effective date. The term of this Discharge Permit will end on March 31, 2019.

Col. Tony D. Bauernfeind, DP-873 March 31, 2014 Page2

NMED requests that the permittee submit an application for renewal (or renewal and modification) at least 180 days prior to the date the Discharge Permit tenn ends.

If you have any questions, please contact Naomi Davidson at (505) 827-2936. Thank you for your cooperation during this Discharge Permit review.

s~4- Jerry -~hoeppner, Chief Ground Water Quality Bureau

JS:ND

Encs: Discharge Permi·t Renewal and Modification, DP-873 Ground Water Discharge Permit Monitoring Well Construction and Abandonment

Conditions, Revision 1.1, March 2011 Land Application Data Sheet (LADS; also available at the following website:

http://www.nrnenv.state.nrn.us/gwb/forms/NewMexicoEnvironmentDepartment GroundWaterQualityBureau-Forms.htm)

Fertilizer Log cc: Bill Chavez, District Manager, NMED District I (permit - electronic copy) NMED Clovis Field Office (permit) John Romero, Office of the State Engineer (permit- electronic copy) John Rebman, Cannon Air Force Base, 506 N Air Commando Way, Cannon AFB, NM

88103 (permit/enclosures)

GROUND WATER DISCHARGE PERMIT RENEWAL AND MODIFICATION

Cannon Air Force Base, DP-873

I. INTRODUCTION

The New Mexico Environment Department (NMED) issues this Discharge Pennit Renewal and Modification (Discharge Permit), DP-873, to Cannon Air Force Base (permittee) pursuant to the New Mexico Water Quality Act (WQA), NMSA 1978 §§74-6-1 through 74-6-17, and the New Mexico Water Quality Control Commission (WQCC) Regulations, 20.6.2 NMAC.

NMED's purpose in issuing this Discharge Permit, and in imposing the requirements and conditions specified herein, is to control the discharge of water contaminants from the Cannon Air Force Base Wastewater Treatment Plant and septic tank/leachfield systems (facility) into ground and surface water, so as to protect ground and surface water for present and potential future use as domestic and agricultural water supply and other uses and protect public health. In issuing this Discharge Permit, NMED has determined that the requirements of Subsection C of

20.6.2.3109 NMAC have been or will be met. Pursuant to Section 20.6.2.3104 NMAC, it is the responsibility of the permittee to comply with the terms and conditions of this Discharge Permit;

failure may result in an enforcement action(s) by NMED (20.6.2.1220 NMAC).

The activities which produce the discharge, the location of the discharge, and the quantity, quality and flow characteristics of the discharge are briefly described as follows:

Up to 1,500,000 gallons per day (gpd) of domestic wastewater is received and treated using a mechanical wastewater treatment plant (WWTP). Wastewater may be stored in a four-acre synthetically lined impoundment adjacent to the WWTP prior to treatment. Treated wastewater (reclaimed wastewater) is stored in a second four-acre synthetically lined impoundment adjacent to the WWTP, a partially synthetically-lined golf course impoundment, and a playa lake. From the golf course impoundment, reclaimed wastewater and stormwater is land applied by sprinkler irrigation to 108 acres of golf course turf, 7.5 acres of golf driving range turf, 1.5 acres of softball fields, and a 0.17 acre dog park. Reclaimed wastewater is also used at the facility on a temporary basis for dust control and construction purposes. Discharge of treated wastewater to the playa lake (Outfall 001) and the golf course irnpoundment (Outfall 002) is also regulated under EPA NPDES Permit NM0030236.

Up to 7 ,500 gpd of domestic wastewater is also discharged from separate buildings at Cannon . Air Force Base to sixteen existing septic tank leachfield systems (ST/LF systems) and to ST/LF systems and holding tank systems to be designed and constructed in the future. A combined total discharge in excess of7,500 gpd to the ST/LF and holding tank systems is not authorized.

The modification consists of an increase in the maximum daily discharge volume to the WWTP from 1,300,000 gpd to 1,500,000 gpd, an increase in the maximum daily discharge volume to the ST/LF systems from 5,000 gpd to 7,500 gpd, and an increase in the number of ST/LF systems from eight to sixteen.

Cannon AFB, DP-873

Page2 of28

The discharge contains water contaminants which may be elevated above the standards of Section 20.6.2.3103 NMAC and/or the presence of toxic pollutants as defined in Subsection WW of 20.6.2.7 NMAC.

All discharge locations are within the boundaries of Cannon Air Force Base on the south side of Highway 60/84. The facility is located approximately seven miles west of Clovis along Highway 60/84 in Sections 18, 19, 20, and 24, T02N, R35E, and in Sections 12, 13, 24, 25, and 30, T02N, R34E, Curry County. Ground water most likely to be affected is at a depth of approximately 297 feet and has a total dissolved solids concentration of approximately 535 milligrams per liter.

The original Discharge Permit was issued on December 8, 1994, and subsequently renewed and/or modified on December 22, 2000, and January 30, 2009. The application (i.e., discharge plan) consists of the materials submitted by the permittee dated July 5, 2013, and materials contained in the administrative record prior to issuance of this Discharge Permit. The discharge shall be managed in accordance with all conditions and requirements of this Discharge Permit.

Pursuant to Section 20.6.2.3109 NMAC, NMED reserves the right to require a Discharge Permit Modification in the event NMED determines that the requirements of20.6.2 NMAC are being or may be violated or the standards of Section 20.6.2.3103 NMAC are being or may be violated.

This may include a determination that structural controls and/or management practices approved under this Discharge Permit are not protective of ground water quality, and that more stringent requirements to protect ground water quality may be required by NMED. The permittee may be required to implement abatement of water pollution and remediate ground water quality.

Issuance of this Discharge Permit does not relieve the permittee of the responsibility to comply with the WQA, WQCC Regulations, and any other applicable federal, state and/or local laws and regulations, such as zoning requirements and nuisance ordinances.

The following acronyms and abbreviations may be used in this Discharge Permit:

Abbreviation Explanation Abbreviation Explanation BODs biochemical oxygen demand NTU nephelometric turbidity units

---------··-- ._{?_:§~yL _________________________

CFR --~o~~-~f f~9e!..~:L8:~~_!~tion!?. _____ _Q_~g _________ ~~g_~i_sm~-----------·-------·---·- Cl chloride TDS total dissolved solids ---------· ·---·-----·---·--------·-----.. --·---··---·-· --------------·· ------·-----·-·------ EPA United States Environmental TKN total Kjeldahl nitrogen

--------- Protection Agency ______ - -gpd gallons per day total =TKN +N03-N

·---·----·----------------- nitr~en __ --- LADS _!__m.id.~lication data sheet(~}__ TRC Total Residual Chlorine ·-·--·---------· 1-------- --------·-----· ~g[~----· ~illj~am~~ lite£_ __________ TSS _J:otaj su~12end~ soli_ds --------mL milliliters UPC _"QnifC2_~_ Plum~i_ng_Cod~----·------- -- -----·---------- ------ NMAC New Mexico Administrative WQA New Mexico Water Quality

Code Act ·-------------- - -------------------- - --·- ---··· ---- -- NMED New Mexico Environment WQCC Water Quality Control

Page 3 of28

Abbreviation Explanation

>---·------·-- _Q~J2.~-1.:!_me~---------------- NMSA New Mexico Statutes

Annotated N03-N nitrate-nitrogen

II. FINDINGS

In issuing this Discharge Permit, NMED finds:

Abbreviation Explanation Commission

•-·---·M--~OMM---~ •-·-----·----.. ·--MMM~MO•M<-~M--M-----·

WWTF Wastewater Treatment

·-·····--·--------·····--- F ~~!E!L _ _____ ·--··-·-·--·----·---·-·---·-··

1. The permittee is discharging effluent or leachate from the facility so that such effluent or leachate may move directly or indirectly into ground water within the meaning of Section

20.6.2.3104 NMAC.

2. The permittee is discharging effluent or leachate from the facility so that such effluent or leachate may move into ground water of the State of New Mexico which has an existing concentration of 10,000 mg/L or l~ss of TDS within the meaning of Subsection A of

20.6.2.3101 NMAC.

3. The discharge from the facility is not subject to any of the exemptions of Section

20.6.2.3105 NMAC.

III. AUTHORIZATION TO DISCHARGE

Pursuant to 20.6.2.3104 NMAC, it is the responsibility of the permittee to ensure that discharges authorized by this Discharge Permit are consistent with the terms and conditions herein.

The _permittee is authorized to receive and treat up to 1,500,000 gpd of domestic wastewater using a mechanical WWTP. Wastewater may be stored in a four-acre synthetically lined impoundment adjacent to the WWTP prior to treatment. Treated wastewater (reclaimed wastewater) is stored in a second four-acre synthetically lined impoundment adjacent to the WWTP, a partially synthetically-lined golf course impoundment, and a playa lake. From the golf course impoundment, reclaimed wastewater and stormwater is land applied by sprinkler irrigation to 108 acres of golf course turf, 7.5 acres of golf driving range turf, and 1.5 acres of softball fields, and a 0.17 acre dog park. Reclaimed wastewater is authorized to be used at the facility on a temporary basis for dust control and construction purposes. Discharge of treated wastewater to the playa lake (Outfall 001) and the golf course impoundment (Outfall 002) is also regulated under EPA NPDES Permit NM0030236.

Up to 7 ,500 gpd of domestic wastewater is also discharged from separate buildings at Cannon Air Force Base to sixteen existing septic tank leachfield systems (ST/LF systems) and to ST/LF systems and holding tank systems to be designed and constructed in the future. A combined total discharge in excess of 7,500 gpd to the ST/LF and holding tank systems is not authorized.

[20.6.2.3104 NMAC, Subsection C of20.6.2.3106 NMAC, Subsection C of20.6.2.3109 NMAC]

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IV. CONDITIONS

NMED issues this Discharge Permit for the discharge of water contaminants subject to the following conditions:

A. OPERATIONAL PLAN

# Terms and Conditions

1. The permittee shall implement the following operational plan to ensure compliance with Title 20, Chapter 6, Parts 1 and 2 NMAC.

[Subsection C of20.6.2.3109 NMAC]

2. The permittee shall operate in a manner such that standards and requirements of Sections

20.6.2.3101 and 20.6.2.3103 NMAC are not violated.

[20.6.2.3101 NMAC, 20.6.2.3103 NMAC, Subsection C of 20.6.2.3109 NMAC]

Operational Actions with Implementation Deadlines

# Terms and Conditions

3. The permittee shall submit record drawings that bear the seal and signature of a licensed New Mexico professional engineer (pursuant to the New Mexico Engineering and Surveying Practice Act and the rules promulgated under that authority) for the constructed upgrades to the WWTP to NMED within 30 days of completion.

[Subsections A and C of 20.6.2.1202 NMAC, Subsection C of 20.6.2.3109 NMAC, NMSA 1978, §§ 61 -23-1through61-23-32]

4. A minimum of 90 days prior to construction of any new ST/LF system, the permittee shall submit a construction proposal for the ST/LF system.

For individual septic tank leachfield systems with a design flow less than or equal to 2,000 gpd, should the permittee propose to size and construct the new ST/LF system consistent with the current Liquid Waste Disposal and Treatment Regulations (20.7.3 NMAC), the construction proposal shall include the design flow of the system, supporting calculations, schematic diagrams, and details of construction, materials, and components to be used.

For individual ST/LF systems with a design flow greater than 2,000 gpd (or for individual ST/LF systems with a design flow less than or equal to 2,000 gpd if the permittee chooses to have the system designed by a licensed New Mexico professional engineer), the permittee shall submit final construction plans and specifications for the proposed new ST/LF system. The construction plans and specifications shall bear the

Carmon AFB, DP-873

Page 5 of28

# Terms and Conditions seal and signature of a licensed New Mexico professional engineer (pursuant to New Mexico Engineering and Surveying Practice Act and the rules promulgated under that authority) and supporting design calculations, and shall be submitted for review by NMED. The submitted documentation shall include the following elements:

a) Design flow calculations and details of all wastewater system components (e.g., septic tanks, dosing chambers, distribution boxes, lift stations, valves, transfer lines, and subsurface low pressure dose disposal field or leachfield); whether new for the new system, retrofitted for the new system, or proposed for abandonment.

b) Specifications for all equipment, materials and installation procedures to be used in the construction of the wastewater system.

Prior to constructing the new ST/LF system and its associated components, the permittee shall obtain written verification from NMED that the information or plans and specifications submitted meet the requirements of this Discharge Permit.

[Subsections A and C of 20.6.2.1202 NMAC, Subsection C of 20.6.2.3106 NMAC,

20.7.3 NMAC, NMSA 1978, §§ 61-23-1 through 61-23-32]

5. Prior to discharging to any new ST/LF system, the permittee shall complete construction in accordance with the current Liquid Waste Disposal and Treatment R egulations (20.7.3 NMAC) or the final construction plans and specifications as required for proposal by this Discharge Permit. The permittee shall notify NMED at least five working days prior to commencement of construction to allow NMED personnel to be onsite for inspection.

For construction in accordance with the current Liquid Waste Disposal and Treatment Regulations (20.7.3 NMAC), the permittee shall submit updated schematic diagrams and any changes to the details of construction, materials, and components of the constructed ST/LF system, or a statement that the system was constructed in accordance with the original calculations, schematic diagrams, and details of construction, to NMED within 30 days of completion.

For construction in accordance with final construction plans and specifications, the permittee shall submit record drawings that bear the seal and signature of a licensed New Mexico professional engineer (pursuant to the New Mexico Engineering and Surveying Practice Act and the rules promulgated under that authority) for the constructed ST/LF system to NMED within 30 days of completion.

[Subsections A and C of 20.6.2.1202 NMAC, Subsection C of 20.6.2.3106 NMAC, Subsection C of 20.6.2.3109 NMAC, 20.7.3 NMAC, NMSA 1978, §§ 61-23-1 through 61-23-32]

March 31 , 2014 Page 6 of28

Operating Conditions

# Terms and Conditions

6. Reclaimed wastewater discharged following the chlorine contact chamber shall not exceed the following limitation:

Total Nitrogen: 10 mglL

[Subsection C of20.6.2.3109 NMAC]

7. In the event that the EPA NPDES permit coverage for Outfall 002 no longer includes effective and enforceable effluent limitations in a NPDES permit for the constituents of BOD5, TSS, and e. coli bacteria or fecal coliform bacteria, the following shall apply:

Reclaimed wastewater discharged from the final treatment process of the mechanical treatment plant system shall not exceed the following limitations:

Test 30-day 30-day average maximum geometric mean

E. coli bacteria: 126 Org/100 NIA 235 Orgl lOO mL mL

OR

Fecal coliform 100 OrgllOO NIA 200 Org/100 bacteria: mL mL BODs: NIA 30 mg/L 45 mg/L TSS: NIA 30 mg/L 45 mg/L TRC: NIA Monitor Only Monitor Onlv

[Subsections Band C of20.6.2.3109 NMAC, NMSA 1978, § 74-6-5.D]

8. The permittee shall apply reclaimed wastewater to the re-use area such that the amount of total nitrogen applied does not exceed 200 pounds per acre in any 12-month period.

Nitrogen content shall not be adjusted to account for volatilization or mineralization processes. Wastewater shall be distributed evenly throughout the entire re-use area.

Excessive ponding shall be prevented.

[Subsection C of20.6.2.3109 NMAC]

9. The permittee shall meet the following general requirements for above-ground use of reclaimed domestic wastewater:

a) The permittee shall maintain signs in English and Spanish at all re-use areas such that they are visible and legible for the term of this Discharge Permit. The signs shall be posted at the entrance to re-use areas and at other locations where public exposure to

Page 7 of28

# Terms and Conditions reclaimed wastewater may occur. The signs shall state: NOTICE: THIS AREA IS

IRRIGATED WITH RECLAIMED WASTEWATER - DO NOT DRINK.

AVISO: ESTA AREA EST.A REGADA CON AGUAS NEGRAS

RECOBRADAS - NO TOMAR. Alternate wording and/or graphics may be submitted to NMED for approval.

b) The reclaimed wastewater systems shall have no direct or indirect cross connections with public water systems or irrigation wells pursuant to the latest revision of the New Mexico Plumbing Code (14.8.2 NMAC) and New Mexico Mechanical Code

(14.9.2 NAMC).

c) Above-grolind use of reclaimed wastewater shall not result in excessive ponding of wastewater, and shall not exceed the water consumptive needs of the crop. Re-use shall not be conducted at times when the re-use area is saturated or frozen.

d) The discharge of reclaimed wastewater shall be confined to the re-use area.

e) The discharge of reclaimed domestic wastewater to crops for human consumption is prohibited.

f) Water supply wells within 200 feet of a re-use area shall have adequate wellhead construction pursuant to 19.27.4 NMAC. Re-use shall be managed to ensure protection of ground water quality.

g) Existing and accessible portions of the reclaimed wastewater distribution system (with the exception of applicatlon equipment such as sprinklers or pivots) shall be colored purple or clearly labeled as being part of a reclaimed wastewater distribution system. Piping, valves and outlets that are installed during the term of this Discharge Permit shall be colored purple pursuant to the latest revision of the New Mexico Plumbing Code (14.8.2 NMAC) and New Mexico Mechanical Code (14.9.2 NAMC) to differentiate piping or fixtures used to convey reclaimed wastewater from those intended for potable or other uses. Valves, outlets, and sprinkler heads used in reclaimed wastewater systems shall be accessible only to authorized personnel.

[Subsections Band C of20.6.2.3109 NMAC, NMSA 1978, § 74-6-5.D]

10. The permittee shall meet the following setbacks, access restrictions and equipment requirements for spray irrigation using Class 1 B reclaimed domestic wastewater:

a) A minimum 100-foot setback shall be maintained between any dwellings or occupied establishments and the edge of the re-use area.

b) Irrigation using reclaimed wastewater shall be postponed at times when windy conditions may result in drift of reclaimed wastewater outside the re-use area.

c) Reclaimed wastewater shall be applied at times and in a manner that minimizes public contact.

d) The spray irrigation system shall be limited to low trajectory spray nozzles.

[Subsections Band C of20.6.2.3109 NMAC, NMSA 1978, § 74-6-5.D]

11. The permittee shall meet the following specific requirements for temporary above ground use of reclaimed domestic wastewater:

Page 8 of28

# Terms and Conditions

a) Access to the reclaimed wastewater distribution system (stand-pipe) shall be restricted. Public access to the reclaimed wastewater system is prohibited.

b) Reclaimed wastewater shall only be transferred to the users by the permittee or its designate.

c) All recipients of reclaimed wastewater for temporary uses shall be notified in writing of the following:

• Transport vehicles and storage tanks containing reclaimed wastewater provided by the permittee shall contain signs in English and Spanish identifying the contents as non-potable water and advising against consumption.

• Above ground use of reclaimed wastewater shall not result in excessive ponding of wastewater. Application shall not be conducted at times when the receiving area is saturated or frozen. Spraying and misting of the reclaimed wastewater shall be minimized.

[20.6.2.3109 NMAC]

12. In the event that a cross-connection with fresh water exists, the permittee shall institute a backflow prevention method to protect wells and public water supply systems from contamination by reclaimed wastewater prior to discharging to the re-use area.

Backflow prevention shall be achieved by a total disconnect (physical air gap separation between the discharge pipe and the liquid surface at least twice the diameter of the discharge pipe), or by a reduced pressure principal backflow prevention assembly (RP) installed on the line between the fresh water supply wells or public water supply and the reclaimed wastewater delivery system. Backflow prevention shall be maintained at all times.

RP devices shall be inspected and tested by a certified backtlow prevention assembly tester at the time of installation, repair or relocation and at least on an annual basis thereafter. The backflow prevention assembly tester shall have successfully completed a 40-hour backflow prevention course based on the University of Southern California's Backflow Prevention Standards and Test Procedures, and obtained certification demonstrating completion. A malfunctioning RP device shall be repaired or replaced within 30 days of discovery, and use of all supply lines associated with the RP device shall cease until repair or replacement has been completed. Copies of the inspection and maintenance records and test results for each RP device associated with the backflow prevention program shall be maintained at a location available for inspection by NMED.

[Subsection C of20.6.2.3109 NMAC]

13. The permittee shall maintain fences around the WWTF to control access by the general public and animals. The fences shall consist of a minimum of six-foot chain link or field fencing and locking gates. Fences shall be maintained throughout the term of this Discharge Permit.

[Subsections Band C of 20.6.2.3109 NMAC, NMSA 1978, § 74-6-5.D]

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# Terms and Conditions

14. The permittee shall maintain signs indicating that the wastewater at the WWTF is not potable. Signs shall be posted at the facility entrance and other areas where there is potential for public contact with wastewater. All signs shall be printed in English and Spanish and remain visible and legible for the term of this Discharge Permit.

[Subsections Band C of20.6.2.3109 NMAC, NMSA 1978, § 74-6-5.D]

15. The permittee shall maintain the impoundment(s) and impoundment liner(s) in such a manner as to avoid conditions which could affect the structural integrity of the impoundment(s) and/or impoundrnent liner(s). Such conditions include or may be characterized by the following:

• erosion damage;

• animal burrows or other damage;

• the presence of vegetation including aquatic plants, weeds, woody shrubs or trees growing within five feet of the top inside edge of a sub-grade impoundment, within five feet of the toe of the outside berm of an above-grade impoundment, or within the impoundment itself; ·

• the presence of large debris or large quantities of debris in the impoundment;

• evidence of seepage; and

• evidence of berm subsidence.

Vegetation growing around the impoundment shall be routinely controlled by mechanical removal in a manner that is protective of the impoundment liner.

The permittee shall visually inspect the impoundrnent(s) and surrounding berms on a monthly basis to ensure proper maintenance. In the event that inspection reveals any evidence of damage that threatens the structural integrity of an impoundment berm or liner, or that may result in an unauthorized discharge, the permittee shall enact the contingency plan set forth in this Discharge Permit.

[Subsection A of 20.6.2.3107 NMAC, Subsection C of 20.6.2.3109 NMAC]

16. The permittee shall preserve a minimum of two feet of freeboard between the liquid level in the impoundment(s) and the elevation of the top of the impoundment liner or the top of the impoundment berm. In the event that the permittee determines that two feet of freeboard cannot be preserved in the impoundment, the perrnittee shall enact the contingency plan set forth in this Discharge Permit.

[Subsection A of 20.6.2.3107 NMAC, Subsection C of 20.6.2.3109 NMAC]

17. The permittee shall properly manage all solids generated by the treatment system to maintain effective operation by removing solids as necessary in accordance with accepted process control methods. Solids removed from the treatment process shall be contained, transported, and disposed of in accordance with all local, state, and federal

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# Terms and Conditions regulations. The permittee shall maintain records of solids disposal.

[Subsection A of 20.6.2.3107 NMAC, Subsection C of 20.6.2.3109 NMAC)

18. The permittee shall inspect the septic tank(s) semi-annually for the accumulation of scum and solids. In the event that the scum layer exceeds three inches or the settled solids occupy 50% or more of the tank volume, the contents of the tank(s) shall be pumped by a licensed hauler. The permittee shall maintain a record of solids removal and disposal, including date, volume of solids removed, and method of disposal.

[Subsection A of20.6.2.3107 NMAC, Subsection C of20.6.2.3109 NMAC)

19. The permittee shall visually inspect the area above the leachfield($) (disposal system) semi-annually to ensure proper maintenance. Any conditions that indicate damage to the disposal system shall be corrected. Such conditions include, but are not limited to erosion damage, animal activity/damage, woody shrubs, or evidence of seepage. The permittee shall keep a log of the inspection findings and repairs. The log shall be made available to NMED upon request.

In the event of a failure of the disposal system, the permittee shall enact the contingency plan set forth in this Discharge Permit.

[Subsections A and D of20.6.2.3107 NMAC, Subsection C of20.6.2.3109 NMAC)

20. The permittee shall utilize operators, certified by the State of New Mexico at the appropriate level, to operate the wastewater collection, treatment and disposal systems.

The operations and maintenance of all or any part of the wastewater system shall be performed by, or under the direct supervision of, a certified operator.

[Subsection C of20.6.2.3109 NMAC, 20.7.4 NMAC)

B. MONITORING AND REPORTING

# Terms and Conditions

21. The permittee shall conduct the following monitoring, reporting, and other requirements listed below in accordance with the monitoring requirements of this Discharge Permit.

[Subsection A of 20.6.2.3107 NMAC, Subsection C of 20.6.2.3109 NMAC)

22. METHODOLOGY - Unless otherwise approved in writing by NMED, the permittee shall conduct sampling and analysis in accordance with the most recent edition of the following documents:

a) American Public Health Association, Standard Methods for the Examination of

Water and Wastewater (181 h, 19th or current)

# Terms and Conditions

b) U.S. Environmental Protection Agency, Methods for Chemical Analysis of Water and Waste

c) U.S. Geological Survey, Techniques for Water Resources Investigations of the U.S.

Geological Survey

d) American Society for Testing and Materials, Annual Book of ASTM Standards, Part

31. Water

e) U.S. Geological Survey, et al., National Handbook of Recommended Methods for Water Data Acquisition

f) Federal Register, latest methods published for monitoring pursuant to Resource Conservation and Recovery Act regulations

g) Methods of Soil Analysis: Part 1. Physical and Mineralogical Methods; Part 2.

Microbiological and Biochemical Properties; Part 3. Chemical Methods, American Society of Agronomy

[Subsection B of20.6.2.3 107 NMAC]

23. The permittee shall submit annual monitori'ng reports to NMED by January 31st.

[Subsection A of 20.6.2.3107 NMAC]

Monitoring Actions with Implementation Deadlines

# Terms and Conditions

24. Prior to discharging from any new ST/LF system, the permittee shall install a flow meter on the facility's water supply associated with the ST/LF system to estimate the volume of wastewater discharged to the ST/LF system.

Confirmation of meter installation, type, calibration and locations shall be submitted to NMED prior to discharging to the ST/LF system.

[Subsection A of 20.6.2.3107 NMAC, Subsection C of 20.6.2.3109 NMAC]

Ground Water Monitoring Conditions

# Terms and Conditions

25. The permittee shall perform ground water sampling once during the first year of the permit term in the following monitoring wells and analyze the samples for all constituents listed in Section 20.6.2.3103 NMAC:

a) MW-Na, intended to be located hydrologically upgradient of the playa lake and located approximately 100 feet northeast of the playa lake.

b) MW-Oa, intended to be located hydrologically downgradient of the playa lake and

Page 12of28

# Terms and Conditions located approximately 250 feet south of the playa lake.

c) MW-Pa, intended to be located hydrologically downgradient of the playa lake and located approximately 120 feet west of the playa lake.

Ground water sample collection, preservation, transport and analysis shall be performed according to the following procedure:

a) Measure the depth-to-most-shallow ground water from the top of the well casing to the nearest hundredth of a foot.

b) Submerge pump approximately 2 - 3 feet below the ground water table surface.

c) Pump at a slow rate of approximately 300 milliliters per minute and measure pH, dissolved oxygen (DO), and specific conductance every 30 minutes.

d) When the pH, DO, and specific conductance measurement vary by less than I 0% of the previous two measurements, obtain samples from the well to be analyzed.

e) Properly prepare, preserve and transport samples.

f) Analyze samples in accordance with the methods authorized in this Discharge

Permit.

Depth-to-most-shallow ground water measurements, analytical results, including the laboratory QA/QC summary report, and a facility layout map showing the location and number of each well shall be submitted to NMED in the monitoring report due by January 31, 2015.

[Subsection A of20.6.2.3107 NMAC]

Facility Monitoring Conditions

# Terms and Conditions

26. The permittee shall measure the totalized, average daily, and peak daily volume of wastewater discharged to the WWTP each month using a primary measuring device (equipped with head sensing, totalizing and chart recording/data logging mechanisms) located at the WWTP headworks. The totalized, average daily, and peak daily discharge volumes for each month shall be submitted to NMED in the annual monitoring reports.

[Subsection A of20.6.2.3107 NMAC, Subsections C and H of20.6.2.3109 NMAC]

27. The permittee shall measure the monthly volume discharged to the playa lake, to the golf course impoundment, to the driving range, and to the softball fields and dog park using four existing totalizing flow meters.

The permittee shall maintain a log that records the date that discharges occur to each location, monthly totalizing meter readings, and units of measurement. The log shall be used to calculate the total monthly volume of reclaimed wastewater discharged to each

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# Terms and Conditions location. The monthly volume discharged to each location shall be used on the LADS to calculate nitrogen loading. A copy of the log shall be submitted to NMED in the annual monitoring reports.

[Subsection A of 20.6.2.3107 NMAC, Subsections C and H of 20.6.2.3109 NMAC]

28. The pennittee shall measure and record the volume of reclaimed domestic wastewater conveyed from the synthetically lined storage impoundment or the stand-pipe for temporary use. The volume shall be measured on a monthly basis using a totalizing flow meter located on the transfer line at the point of transfer. The pennittee shall submit a summary of the monthly discharge volumes to NMED in the annual monitoring reports.

The flow meter shall be calibrated to within+/- 10% of actual flow and kept operational at all times.

[Subsection A of20.6.2.3107 NMAC, Subsections C and H of20.6.2.3109 NMAC]

29. The pennittee shall estimate the quarterly volume of wastewater discharged to the ST/LF systems by recording meter readings associated with each system's water supply on a quarterly basis and calculating the quarterly and average daily usage volumes. The estimated quarterly discharge volume* (based upon meter readings) shall be used to calculate the average daily discharge volume by the formula below.

estimated quarterly discharge volume + number of days between readings = average daily discharge volume

Each quarter, the pennittee shall make note of any significant uses of the water (e.g., irrigation, evaporative cooling or leaks) that do not contribute to the volume of wastewater discharged. , The quarterly meter readings, estimated quarterly and average daily discharge volumes, and notes and estimated volume of significant uses shall be submitted to NMED in the annual monitoring reports.

*should more than one flow meter exist for the facility's water supply, the permittee shall calculate the estimated quarterly discharge volume for the facility by adding the estimated quarterly discharge volume for each meter. This summation should be completed prior to calculating the average daily discharge volume for the facility.

[Subsection A of20.6.2.3107 NMAC, Subsections C and H of20.6.2.3109 NMAC]

30. All flow meters (except supply meters) shall be capable of having their accuracy ascertained under actual working (field) conditions. A field calibration method shall be developed for each flow meter and that method shall be used to check the accuracy of each respective meter. Field calibrations shall be performed upon repair or replacement of a flow measurement device and, at a minimum, on an annual basis.

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# Terms and Conditions

Flow meters shall be calibrated to within plus or minus 10 percent of actual flow, as measured under field conditions. Field calibrations shall be performed by an individual knowledgeable in flow measurement and in the installation/operation of the particular device in use. A flow meter calibration report shall be prepared for each flow measurement device at the frequency calibration is required. The flow meter calibration report shall include the following information:

a) The location and meter identification.

b) The method of flow meter field calibration employed.

c) The measured accuracy of each flow meter prior to adjustment indicating the positive or negative offset as a percentage of actual flow as determined by an in-field calibration check.

d) The measured accuracy of each flow meter following adjustment, if necessary, indicating the positive or negative offset as a percentage of actual flow of the meter.

e) Any flow meter repairs made during the previous year or during field calibration.

The permittee shall maintain records of flow meter calibration(s) at a location accessible for review by NMED during facility inspections.

[Subsection A of 20.6.2.3107 NMAC, Subsections C and H of 20.6.2.3109 NMAC]

31. The permittee shall visually inspect flow meters on a monthly basis for evidence of malfunction. If a visual inspection indicates a flow meter is not functioning as required by this Discharge Permit, the permittee shall repair or replace the meter within 30 days of discovery. For repaired meters, the permittee shall submit a report to NMED with the next monitoring report following the repair that includes a description of the malfunction; a statement verifying the repair; and a flow meter field calibration report completed in accordance with the requirements of this Discharge Permit. For replacement meters, the permittee shall submit a report to NMED with the next monitoring report following the replacement that includes a design schematic for the device and a flow meter field calibration report completed in accordance with the requirements of this Discharge Permit.

[Subsection A of20.6.2.3107 NMAC, Subsection C of20.6.2.3109 NMAC]

32. The permittee shall collect samples of reclaimed wastewater following the chlorine contact chamber on a quarterly basis and analyze the samples for TKN, N03-N, TDS and Cl. Samples shall be properly prepared, preserved, transported and analyzed in accordance with the methods authorized in this Discharge Permit. Analytical results shall be submitted to NMED in the annual monitoring reports.

[Subsection A of 20.6.2.3107 NMAC, Subsections C and H of 20.6.2.3109 NMAC]

33. In the event that the EPA NPDES permit coverage for Outfall 002 no longer includes effective and enforceable effluent limitations in a NPDES permit for the constituents of

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# Terms and Conditions

BOD5, TSS, and e. coli bacteria or fecal coliform bacteria, the following shall apply:

During any week that the discharge of reclaimed wastewater occurs, the permittee shall perfonn the following analyses on reclaimed wastewater samples collected following the chlorine contact chamber using the following sampling method and frequency:

• E. coli bacteria OR Fecal coliform bacteria: grab sample at peak daily flow once per week.

• BOD5: six-hour composite sample once per two weeks.

• TSS: six-hour composite sample once per two weeks.

• TRC concentrations: record whenever e. coli or fecal coliform samples are collected.

Samples shall be properly prepared, preserved, transported and analyzed in accordance with the methods authorized in this Discharge Permit. Analytical results and a copy of the log of TRC concentrations shall be submitted to NMED in the annual monitoring reports.

[Subsection A of 20.6.2.3107 NMAC, Subsections B, C and H of 20.6.2.3109 NMAC, NMSA 1978, § 74-6-5.D]

34. On an annual basis, the permittee shall collect a 24-hour flow weighted composite sample (except where noted) of reclaimed wastewater following the chlorine contact chamber and analyze the sample for the following inorganic constituents:

• aluminum • manganese

• arsemc • molybdenum

• barium • mercury

• boron • pH (instantaneous)

• cadmium • nickel

• chromium • radioactivity: combined radium-226 & radium-

• cobalt 228

• copper • selenium

• cyanide • silver

• fluoride • sulfate

• iron • uranium

• lead • zmc

Samples shall be properly prepared, preserved, transported and analyzed in accordance with the methods authorized in this Discharge Permit. Analytical results shall be submitted to NMED in the annual monitoring reports.

[Subsection A of 20.6.2.3107 NMAC, Subsections C and H of 20.6.2.3109 NMAC]

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35. On an annual basis, the permittee shall collect a grab sample of reclaimed wastewater following the chlorine contact chamber and analyze the sample for the following organic constituents:

• benzene

• benzo-a-pyrene

• carbon tetrachloride

• chloroform

• 1, 1-dichloroethane

• 1,2-dichloroethane (EDC)

• 1, 1-dichloroethylene (1, 1-

DCE)

• ethylbenzene

• ethylene dibromide (EBD)

• methylene chloride

• P AHs: total naphthalene plus monomethylnaphthalenes

• Phenols

• Polychlorinated biphenyls

(PCBs)

• toluene

• 1, 1,2,2-tetrachloroethane

• 1, 1,2,2-te~rachloroethylene

(PCB)

• 1, 1, I-trichloroethane

• 1, 1 ,2-trichloroethane

• 1, 1,2-trichloroethylene (TCE)

• vinyl chloride

• xylenes (total)

Samples shall be properly prepared, preserved, transported and analyzed in accordance with the methods authorized in this Discharge Permit. Analytical results shall be submitted to NMED in the annual monitoring reports.

[Subsection A of 20.6.2.3107 NMAC, Subsections C and H of 20.6.2.3109 NMAC]

36. The permittee shall complete LADS (copy enclosed) on a monthly basis that document the amount of nitrogen applied to each location within the re-use area during the most recent 12 months. The LADS shall reflect the total nitrogen concentration from the most recent wastewater analysis and the measured discharge volumes to each location for each month. The LADS shall be completed with information above or shall include a statement that application of wastewater did not occur. The LADS shall be submitted to NMED in the annual monitoring reports.

[Subsection A of 20.6.2.3107 NMAC, Subsection C of 20.6.2.3109 NMAC]

37. The permittee shall keep a log (copy enclosed) of all additional nitrogenous fertilizer applied to each location within the re-use area. The log shall contain the date of fertilizer application, the type (organic or inorganic) and form (granular or liquid), nitrogen concentration (in percent), the amount of fertilizer applied (in pounds per acre), and the amount of nitrogen applied (in pounds per acre) for each location. The log, or a statement that application of fertilizer did not occur, shall be submitted to NMED in the annual monitoring reports.

[Subsection A of20.6.2.3107 NMAC]

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38. Records of solids disposal, including a copy of all Discharge Monitoring Reports (i.e., DMRs) required to be submitted to the EPA pursuant to 40 CFR 503 for the previous calendar year, shall be submitted to NMED in the annual monitoring reports.

[Subsection A of 20.6.2.3107 NMAC]

39. The permittee shall sample wastewater on an annual basis for TKN. Four individual wastewater samples shall be collected from four final septic tanks each year, rotating among the sixteen septic tank/leachfield systems. Samples shall be properly prepared, preserved, transported and analyzed in accordance with the methods authorized in this Discharge Permit. Analytical results shall be submitted to NMED in the annual monitoring report.

[Subsection A of20.6.2.3107 NMAC, Subsection C and H of20.6.2.3109 NMAC]

40. The permittee shall submit all records of solids removal and disposal to NMED in the annual monitoring reports.

[Subsection A of 20.6.2.3107 NMAC]

C. CONTINGENCY PLAN

# Terms and Conditions

41. In the event that ground water monitoring indicates that a ground water quality standard identified in Section 20.6.2.3103 NMAC is exceeded; the total nitrogen concentration in ground water is greater than 10 mg!L; or a toxic pollutant (defined in Subsection WW of

20.6.2.7 NMAC) is present in a ground water sample and in any subsequent ground water sample collected from a monitoring well required by this Discharge Permit, the permittee shall enact the following contingency plan:

Within 60 days of the subsequent sample analysis date, the permittee shall propose measures to ensure that the exceedance of the standard or the presence of a toxic pollutant will be mitigated by submitting a corrective action plan to NMED for approval.

The corrective action plan shall include a description of the proposed actions to control the source and an associated completion schedule. The plan shall be enacted as approved by NMED.

Once invoked (whether during the term of this Discharge Permit; or after the term of this Discharge Permit and prior to the completion of the Discharge Permit closure plan requirements), this condition shall apply until the permittee has fulfilled the requirements of this condition and ground water monitoring confirms for a minimum of two years of consecutive ground water sampling events that the standards of Section 20.6.2.3103 NMAC are not exceeded and toxic pollutants are not present in ground water.

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# Terms and Conditions

The permittee may be required to abate water pollution pursuant to Sections 20.6.2.4000 through 20.6.2.4115 NMAC, should the corrective action plan not result in compliance with the standards and requirements set forth in Section 20.6.2.4103 NMAC within 180 days of confirmed ground water contamination.

[Subsection A of20.6.2.3107 NMAC, Subsection E of20.6.2.3109 NMAC]

42. In the event that analytical results of a quarterly treated wastewater sample indicate an exceedance of the total nitrogen limitation set in this Discharge Permit, the permittee shall collect and analyze a second sample within 30 days of the first sample analysis date. In the event the second sample results indicate that the limitation is continuing to be exceeded, the following contingency plan shall be enacted:

a) Within 15 days of the second sample analysis date indicating that the limitation is continuing to be exceeded, the permittee shall

i) notify NMED that the contingency plan is being enacted; and

ii) submit a copy of the first and second analytical results indicating an exceedance toNMED.

b) The permittee shall increase the frequency of total nitrogen wastewater sampling and analysis of treated wastewater to once per month.

c) The pennittee shall examine the operation and maintenance log, required by the

Record Keeping conditions of this Discharge Permit, for improper operational procedures.

d) The permittee shall conduct a physical inspection of the treatment system to detect abnormalities. Any abnormalities discovered shall be corrected. A report detailing the corrections made shall be submitted to NMED within 30 days of correction.

e) In the event that any analytical results from monthly wastewater sampling indicate an exceedance of the total nitrogen limitation, the permittee shall propose to modify operational procedures and/or upgrade the treatment process to achieve the total nitrogen limit by submitting a corrective action plan to NMED for approval. The plan shall include a schedule for completion of corrective actions and shall be submitted within 90 days of the second sample analysis date indicating that the limitation is continuing to be exceeded. The permittee shall initiate implementation of the plan following approval by NMED.

When analytical results from three consecutive months of wastewater sampling do not exceed the limitation, the permittee is authorized to return to a quar:terly monitoring frequency.

[Subsection A of 20.6.2.3107 NMAC, Subsection C of 20.6.2.3109 NMAC]

43 . In the event that the EPA NPDES permit coverage for Outfall 002 no longer includes effective and enforceable effluent limitations in a NPDES permit for the constituents of BOD5, TSS, and e. coli bacteria or fecal coliform bacteria, the following shall apply:

In the event that analytical results of a reclaimed domestic wastewater sample indicates

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# Terms and Conditions an exceedance of any of the maximum limitations for BOD5, TSS, e. coli bacteria, or fecal coliform bacteria set by this Discharge Pennit, the permittee shall collect and analyze a second sample within 24 hours after becoming aware of the exceedance. In the event the second sample results indicate that any maximum limitation is continuing to be exceeded (i.e., confirmed exceedance), the contingency plan below shall be enacted.

AND/OR

In the event that analytical results of a reclaimed domestic wastewater sample indicates an exceedance of any of the 30-day average limitations for BOD5, TSS, e. coli bacteria or fecal coliform bacteria set by this Discharge Permit (i.e., confirmed exceedance), the contingency plan below shall be enacted.

Contingency Plan

a) Within 24 hours of becoming aware of a confirmed exceedance (as identified above), the permittee shall:

i) notify NMED that the contingency plan is being enacted; and

ii) submit copies of the recent analytical results indicating an exceedance to NMED.

b) The permittee shall immediately cease discharging reclaimed domestic wastewater to the re-use area.

c) The permittee shall examine the operation and maintenance log, required by the Record Keeping conditions of this Discharge Permit, for improper operational procedures.

d) The permittee shall conduct a physical inspection of the treatment system to detect abnormalities. Any abnormalities discovered shall be corrected. A report detailing the corrections made shall be submitted to NMED within 30 days following correction.

When the analytical results from samples of reclaimed domestic wastewater, sampled as required by this Discharge Permit, no longer indicate an exceedance of any of the maximum limitations, the permittee may resume discharging reclaimed wastewater to the re-use area.

If a facility is required to enact the contingency plan more than two times in a 12-month period, the permittee shall propose to modify operational procedures and/or upgrade the treatment process to achieve consistent compliance with the maximum and 30-day average limitations by submitting a corrective action plan for NMED approval.