50-80500-25-17148_Anton Chico 50-80500-25-17148 final 0325.pdf.PDF
PDF 18 MB Posted
- Attached to
- ANTON CHICO WATER AND WASTEWATER IMPROVEMENTS.
- Solicitation number
- 50-80500-25-17148
- Issued by
- Guadalupe County, New Mexico
About this file
This is an Invitation to Bid (ITB) document from the New Mexico State Purchasing Division (GSD) for the Anton Chico Water and Wastewater Improvements project, involving the New Mexico Department of Transportation (NMDOT) District 4. The project encompasses comprehensive water and wastewater system improvements for two rest areas located near Santa Rosa, New Mexico, with a bid due date of April 25, 2025, at 2:00 pm. The work includes installation of sewer lines, septic tanks, leach fields, water distribution lines, water storage tanks, booster pumps, chlorine disinfection equipment, nitrate treatment systems, well building expansions, and associated electrical and control systems. A non-mandatory pre-bid meeting is scheduled for April 16, 2025, at the Eastbound Anton Chico Rest Area.
The bid is structured as a unit price contract with multiple line items across different system components, totaling 71 separate bid items for both the eastbound and westbound rest areas. The project requires electronic submission through the eProNM system, with a 5% bid security requirement and potential New Mexico/Native American Resident Preferences available. Bidders must be registered with the New Mexico Department of Workforce Solutions for projects over $60,000, and must provide a subcontractor listing form. The project will require 100% performance and payment bonds, and contractors must comply with prevailing wage rates. Funding appears to be from state sources, with potential restrictions on applying multiple preferences and considerations for federal fund involvement.
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Text version
STATE PURCHASING DIVISION (GSD)
(505) 827-0472
BIDDER:
Name:
Address:
Phone:
Fax:
E-mail:
INVITATION TO BID
CONSTRUCTION CONTRACT
PROCUREMENT NUMBER: 50-80500-25-
171488
Sealed bid opening FORMAL
NM STATE PURCHASING DIVISION
PROJECT NAME:
Anton Chico Water and Wastewater Improvements
BID DUE DATE: April 25, 2025 TIME: 2:00pm Procurement Specialist: John DeSha Contact Number: 505.660.3671 Contact Email: johnny.desha@gsd.nm.gov
ARCHITECT/ENGINEER OF RECORD:
Daniel B. Stephens & Associates A Geo-Logic Company 6020 Academy NE Albuquerque, New Mexico 87109 www.dbstephens.com
IMPORTANT
Only Electronically submitted bids will be accepted. No hand-carried, mailed, carrier delivered, emailed, or faxed bids will be accepted.
AGENCY (OWNER)/POINT OF
CONTACT:
Angela Martinez, 505-570-7940 angelal.martinez2@dot.nm.gov
Bids must be submitted electronically, via eProNM only. Please see Bid Submission Instructions on page 2.
Bids are subject to the “Terms and Conditions,” shown on the attached pages of this document, and any additional bidding instructions or requirements. The Terms and Conditions shall not be modified or supplemented.
NOTE: if you decide not to bid, do not return this document.
A business eligible for a New Mexico/Native American Resident Preference (Preference) must obtain a Preference certificate from the NM Taxation & Revenue Department. In order for the appropriate Preference to be applied to this solicitation, the expenditure for this solicitation cannot involve federal funds, and Bidder must submit a copy of its Preference certificate along with its response to the solicitation. Applicable Preferences will be applied to monetary values only, in accordance with §13-1-21 NMSA 1978, not percentage discounts or other non-monetary values. Additionally, only one submitted Preference will be applied per solicitation, not multiple. Applications are available for download at:
http://www.tax.newmexico.gov/Businesses/in-state-veteran-preference-certification.aspx
Technical Online Bidding Questions:
(505) 795-1894 or (800) 233-1121 or you can contact the buyer listed on the ITB front page.
Bidder Instructions for Invitation to Bid (ITB) Viewing ITB:
1. Bidders can access active procurements at the following sites:
• https://www.generalservices.state.nm.us/statepurchasing/active-procurements.aspx
• https://bids.sciquest.com/apps/Router/PublicEvent?CustomerOrg=StateOfNewMexico
2. Complete bid documents as required by the ITB Specifications, and submit any required documentation, supporting materials, certificates, etc. in addition to the bid documents.
Submitting Bids:
Complete bid documents as required by the ITB Specifications, and submit any required documentation, supporting materials, certificates, etc. in addition to the bid documents.
• Electronic submissions through eProNM at the following site:
https://bids.sciquest.com/apps/Router/PublicEvent?CustomerOrg=StateOfNewMexico
• Bids will be time-stamped in the system when Bidder clicks “OK” after “Review and Submit.” Such electronic submissions will be considered sealed bids in accordance with statute.
• If an amendment is processed after bid is submitted, Bidders must resubmit their bid in order for it to be considered fully submitted. Note: It is the responsibility of the Bidder to ensure bids are correct and accurate before submission. By bidding electronically, you acknowledge any and all amendments and it is your responsibility to ensure your bid corresponds with any amendments.
It is the Bidder’s responsibility to ensure all documents are completely uploaded and submitted electronically via the eProNM system by the deadline set forth in this ITB. The eProNM system will automatically cease uploading data at the date and time of the deadline. Please ensure that you, as the Bidder, allow adequate time for large uploads and to fully complete your submittal by the deadline. A submission that is not both: (1) fully complete; and (2) received, via the eProNM system by the deadline, will be deemed late. Further, a submission that is not fully complete and received via the eProNM system by the deadline because the response was captured, blocked, filtered, quarantined or otherwise prevented from reaching the proper destination server by any anti-virus or other security software will be deemed late. In accordance with statute and rule, NO LATE BID CAN BE
ACCEPTED.
Bid Opening:
Sealed bids will be publicly opened online via Microsoft Teams. Bids are subject to the “Terms and Conditions,” shown on the subsequent pages of this document, and any additional bidding instructions or requirements. NOTE: if you decide not to bid, do not return this ITB document.
https://teams.microsoft.com/l/meetup-join/19%3ameeting_Y2IyZTlhMjEtYWZlYS00Nzc4LThjOWQtMGI3MWQxMWNlMzhk%40thread.v2/0?context =%7b%22Tid%22%3a%2204aa6bf4-d436-426f-bfa4-04b7a70e60ff%22%2c%22Oid%22%3a%2251de2250-9e0b- 4237-b5ee-d3e9e1e586fc%22%7d Meeting ID: 210 089 867 732
Passcode: 4W2kXN Download Teams | Join on the web Or call in (audio only) +1 505-312-4308,,45609571# United States, Albuquerque Phone Conference ID: 456 095 71#
THIS BID IS SUBJECT TO THE REQUIREMENTS OF THE BIDDING DOCUMENTS AS DEFINED IN THE
"INSTRUCTIONS TO BIDDERS.”
THE BID PROPOSAL FORM MUST BE ACCOMPANIED BY A SURETY BOND, SUBCONTRACTOR LISTING
FORM, AND DOCUMENTS SPECIFIED IN THE "INSTRUCTIONS TO BIDDERS."
INVITATION TO BID page 2 https://www.generalservices.state.nm.us/statepurchasing/active-procurements.aspx https://bids.sciquest.com/apps/Router/PublicEvent?CustomerOrg=StateOfNewMexico https://teams.microsoft.com/l/meetup-join/19%3ameeting_Y2IyZTlhMjEtYWZlYS00Nzc4LThjOWQtMGI3MWQxMWNlMzhk%40thread.v2/0?context=%7b%22Tid%22%3a%2204aa6bf4-d436-426f-bfa4-04b7a70e60ff%22%2c%22Oid%22%3a%2251de2250-9e0b-4237-b5ee-d3e9e1e586fc%22%7d https://teams.microsoft.com/l/meetup-join/19%3ameeting_Y2IyZTlhMjEtYWZlYS00Nzc4LThjOWQtMGI3MWQxMWNlMzhk%40thread.v2/0?context=%7b%22Tid%22%3a%2204aa6bf4-d436-426f-bfa4-04b7a70e60ff%22%2c%22Oid%22%3a%2251de2250-9e0b-4237-b5ee-d3e9e1e586fc%22%7d https://teams.microsoft.com/l/meetup-join/19%3ameeting_Y2IyZTlhMjEtYWZlYS00Nzc4LThjOWQtMGI3MWQxMWNlMzhk%40thread.v2/0?context=%7b%22Tid%22%3a%2204aa6bf4-d436-426f-bfa4-04b7a70e60ff%22%2c%22Oid%22%3a%2251de2250-9e0b-4237-b5ee-d3e9e1e586fc%22%7d https://teams.microsoft.com/l/meetup-join/19%3ameeting_Y2IyZTlhMjEtYWZlYS00Nzc4LThjOWQtMGI3MWQxMWNlMzhk%40thread.v2/0?context=%7b%22Tid%22%3a%2204aa6bf4-d436-426f-bfa4-04b7a70e60ff%22%2c%22Oid%22%3a%2251de2250-9e0b-4237-b5ee-d3e9e1e586fc%22%7d https://www.microsoft.com/en-us/microsoft-teams/download-app https://www.microsoft.com/microsoft-teams/join-a-meeting tel:+15053124308,,45609571
Bidding Documents may be obtained / reviewed at the following locations:
ARCHITECT/ENGINEER OF RECORD
Daniel B. Stephens & Associates A Geo-Logic Company 6020 Academy NE www.dbstephens.com
The Bidding Documents contain a time for completion of the work and further impose liquidated damages for failure to complete the work within that time period.
Bids shall be presented in the form of a total Base Bid proposal under a Lump Sum Contract plus any additive or deductive alternates that are selected by the Owner. A bid must be submitted on all bid items and alternates;
segregated bids will not be accepted.
NOTE: Base Bid price shall not include state gross receipts or local options taxes. Taxes will be included in the Contracted Amount at prevailing rates as a separate item to be paid by Owner.
In submitting this bid, each Bidder must satisfy all terms and conditions of the Bidding Documents. No Bidder may withdraw his bid for 120 DAYS after the actual date of the opening thereof.
Wage Rates & Workforce Solutions Registration: Pursuant to the Public Works Minimum Wage Act, Section 13-4-10 to 13-4-17 NMSA 1978, all work covered by this Invitation to Bid shall be in accordance with applicable state laws and, if the bid amount is sixty thousand dollars ($60,000) or more, is subject to the minimum wage rate determination issued by the New Mexico Department of Workforce Solutions, Labor Relations Division, Public Works Unit. Section 13-4-13.1 requires Contractors when their bid is over $60,000 and subcontractors of all tiers when their portion of the work is over $60,000, to be registered with the Labor Relations Division of the Department of Workforce Solutions. This registration is available under the “Contractor Registration” section at the following website:
INVITATION TO BID page 3 http://www.dws.state.nm.us/LaborRelations/LaborInformation/PublicWorks
There may be some administrative delay in processing your registration. Pursuant to Section 13-4-13.1 NMSA 1978, the State Purchasing Division cannot accept your bid if you are not registered at the time of bid opening.
Please direct all questions concerning registration to DWS at (505) 841-4400.
A completed Subcontractor Listing Form must accompany each bid.
Bonds: Bid Security in the form of a surety bond executed by a surety company authorized to do business in the state of New Mexico in the amount of five percent (5%) of the total bid, or the equivalent in cash by means of a cashier's check or in a form satisfactory to the Owner, must accompany each bid in accordance with the Instructions to Bidders.
A 100% Performance Bond and a 100% Payment and Materials Bond for the total contract amount, including appropriate New Mexico Gross Receipts Tax, executed by a surety company authorized to do business in the state of New Mexico shall be required from the successful Bidder prior to award of contract.
A subcontractor shall provide performance and payment bonds if the subcontractor’s contract (to the Contractor) for work to be performed is $125,000 or more. Failure of a subcontractor to provide the required bonds shall not subject owner to any increase in cost due to approved substitution of subcontractor.
Preferences: Applicants for in‐state / veteran preferences for all resident businesses, veterans, Native American, Native American veteran and contractors will have to obtain preference numbers from the New Mexico Department of Taxation & Revenue. Vendor must submit a copy of their preference certificate with each solicitation in order to receive the preference. Applications are available for download at the following website:
Attention of the Bidder who normally qualifies for a preference is particularly directed to the provisions of Sections 13-4-1 through 13-4-4 NMSA 1978 as they shall not apply to federal aid construction projects or when the expenditure of federal funds designated for a specific contract is involved. All contracts executed in violation of this act shall be void and of no effect.
http://www.dws.state.nm.us/LaborRelations/LaborInformation/PublicWorks
INVITATION TO BID page 4
A Non-Mandatory Pre-Bid Meeting will be held as follows:
DATE: April 16, 2025
TIME: 10:00am
LOCATION: Eastbound Anton Chico Rest Area I-40 MP 251.00
POINT OF CONTACT: Casey Encinias 505-617-5700
END OF INVITATION TO BID
Bid Form
NMDOT District 4 Anton Chico Rest Areas Water and Wastewater Improvements Bid Form
Item No. Description QTY Unit Unit Price
Extended Price
Base Bid Miscellaneous and Site Work
1 Mobilization and demobilization (not to exceed 8% of total construction cost)
1 LS
2 Construction staking 1 LS 3 Clear and grub, include tree removal 1 LS 4 Trench drain collection system for runoff at the Eastbound rest area, per DWG C-
8, CIP
1 LS
5 Seeding 0.5 AC Eastbound Water System
6 4-inch PVC C900 DR25 waterline, including appurtenances, trenching and backfill, CIP
930 LF
7 4-inch gate valve and valve box, including appurtenances, excavation, backfill, and compaction, CIP
3 EA
8 Connection to existing restroom facility piping, including appurtenances, saw cutting, trenching, and backfill, and site restoration, CIP
1 EA
9 Steel welded 5,000-gallon water storage tank, including foundation, piping, valves, and appurtenances, CIP
1 LS
10 Packaged booster pump station, skid mounted, CIP
1 LS
11 Packaged water treatment system for Nitrate removal, skid mounted, including water softener, CIP
1 LS
12 Well building improvements and expansion, CIP
1 LS
13 Remove and replace existing asphalt within trench limits
270 SY
14 Difinfection equipment, including dosing pump, storage container, spill containment, and appurtenances, CIP
1 LS
15 Exposed piping in well building, 2-inch PVC, including meters, valves, fittings, and all appurtenances, CIP
1 LS
16 Electrical improvements including controls, alarm, recircuiting, panelboard and feeder, grounding,materials, and labor, CIP
1 LS
17 Evaporation pond for treatment backwash water, including HPDE lined 60-mil, CIP
1 LS
18 Security fencing installed around the well buildings and tank, 6 feet tall, CIP
235 LF
Bid Form
Item No. Description QTY Unit Unit Price
Extended Price
19 Perimeter fencing installed around evaporation pond, 4 feet tall, CIP
275 LF
20 Pedestrian gate with barbed wire, 4 feet wide, CIP
1 EA
21 Pedestrian gate, 4 feet wide, CIP 1 EA 22 Double swing gate with barbed wire, 16 feet wide, CIP
1 EA
23 Double swing gate, 16 feet wide, CIP 1 EA Eastbound Sewer System
24 4-inch PVC SCH 40 gravity sewer line, including appurtenances, trenching, and backfill, CIP
170 LF
25 Connection to existing restroom facility piping, including appurtenances, saw cutting, trenching, and backfill, and site restoration, CIP
1 EA
26 Ultrasonic flow meter, installed in new fiberglass vault, CIP
1 EA
27 Furnish and install two concrete septic tanks, one 3,500-gallon and one 4,000-gallon including piping connections and excavation, CIP
1 LS
28 2-inch PVC SCH 40 Force Main, including trenching and backfill, CIP
400 LF
29 1¼-inch PVC SCH 40 low pressure perforated pipe for leach field lines, including trenching and backfill, CIP
1,200 LF
30 Gravel for leach field trenches, CIP 89 CY 31 Geotextile fabric for leach field, CIP 1,800 SF 32 Leach field completion, including monitoring tubes and cleanouts, CIP
1 LS
33 Remove and replace existing asphalt within trench limits
90 SY
34 Perimeter fencing for leach field, 4 feet high, CIP
LF
35 Double swing gate, 16 feet wide, CIP 1 EA 36 Pedestrian gate, 4 feet wide, CIP 1 EA 37 Remove and dispose of existing leach mound
1,869 CY
38 Electrical improvements including flow meter feeder, materials, and labor, CIP
1 LS
39 Remove and dispose of existing septic tanks and leach field
1 LS
Westbound Water System 40 4-inch PVC C900 DR25 waterline, including appurtenances, trenching and backfill, CIP
1,200 LF
Bid Form
Item No. Description QTY Unit Unit Price
Extended Price
41 4-inch gate valve and valve box, including appurtenances, excavation, backfill, and compaction, CIP
3 EA
42 Connection to existing restroom facility piping, including appurtenances, saw cutting, trenching, and backfill, and site restoration, CIP
1 EA
43 Steel welded water storage tank, 5,000-gallon, including foundation, piping, valves, and appurtenances, CIP
1 LS
44 Packaged booster pump station, skid mounted, CIP
1 LS
45 Packaged water treatment system for Nitrate removal, skid mounted, including water softener, CIP
1 LS
46 Well building improvements and expansion, CIP
1 LS
47 Remove and replace existing asphalt within trench limits
220 SY
48 Disinfection equipment, including dosing pump, storage container, spill containment, and appurtenances, CIP
1 LS
49 Exposed piping in well building, 2-inch PVC, including meters, valves, fittings, and all appurtenances, CIP
1 LS
50 Electrical improvements including controls, alarm, recircuiting, panelboard and feeder, grounding, materials, and labor, CIP
1 LS
51 Evaporation pond for reject RO water, including HDPE lined 60-mil, CIP
1 LS
52 Security fencing installed around the well buildings and tank, 6 feet tall, CIP
230 LF
53 Perimeter fencing installed around evaporation pond, 4 feet tall, CIP
320 LF
54 Pedestrian gate with barbed wire, 4 feet wide, CIP
1 EA
55 Pedestrian gate, 4 feet wide, CIP 1 EA 56 Double swing gate with barbed wire, 16 feet wide, CIP
1 EA
57 Double swing gate, 16 feet wide, CIP 1 EA Westbound Sewer System
58 4-inch PVC SCH 40 sewer line, including appurtenances, trenching, and backfill, CIP
850 LF
Bid Form
Item No. Description QTY Unit Unit Price
Extended Price
59 Connection to existing restroom facility piping, including appurtenances, saw cutting, trenching, and backfill, and site restoration, CIP
1 EA
60 Furnish and install two concrete septic tanks, one 3,500-gallon and one 4,000-gallon including piping connections and excavation, CIP
1 LS
61 4-inch PVC SDR 35 perforated pipe for leach field lines, including trenching and backfill, CIP
880 LF
62 Packaged metering manhole, including fiberglass manhole, ultrasonic flow meter, Parshall Flume, CIP
1 LS
63 Gravel for leach field trenches, CIP 196 CY 64 Geotextile fabric for leach field, CIP 2,640 SF 65 Leach field completion, including monitoring tubes and cleanouts, CIP
1 LS
66 Remove and replace existing asphalt within trench limits
90 SY
67 Perimeter fencing for leach field, 4 feet high, CIP
550 LF
68 Double swing gate, 16 feet wide, CIP 1 EA 69 Pedestrian gate, 4 feet wide, CIP 1 EA 70 Electrical improvements including flow meter feeder, electrical rack, materials, and labor, CIP
1 LS
71 Remove and dispose of existing septic tanks and leach field
1 LS
Total Base Bid Bid Alternate A.1.1 Well inspection and test pumping, including pulling pumps, video survey, cleaning, and resetting the pumps, CIP
2 LS
Total Bid Alternate 1
Technical Specifications NMDOT Anton Chico Rest Areas Water and Wastewater Improvements
Prepared for New Mexico Department of Transportation District 4
Prepared by
6020 Academy NE, Suite 100 www.dbstephens.com
DB23.1049
March 11, 2024
Attachment 1
Pre-Bid Meeting Materials
Not provided in this copy
Attachment 2
Drinking Water Watch Summary Reports
New Mexico Environment Department UOCP Operator Lookup Drinking Water Program County Map of NM Water System Search Help
Water System Detail Information Water System No.: NM3590710 Federal Type: NC Water System Name: ANTON CHICO REST AREA EAST BOUND Federal Source: GW Principal County Served: GUADALUPE System Status: A Principal City Served: SANTA ROSA Activity Date: 06-01-1977
Water System Facility Facility ID No. 90710002 Type: WL - Well
Facility Name WELL #2 Status/Reason A
Water Type GW Water Type Date
Sample Points Sample Point ID Location Description Type
SP907100021 WELL #2 SR
Water System Facility Contacts Type Contact Communication
Facility Annual Operating Period(s) Effective Begin Date Effective End Date Start Month/Day End Month/Day
Latitude/Longitude Data Longitude Latitude Link
-105.088767 34.980584 Click here to view location on Terraserver
NMDWB, Drinking Water Watch https://dww.water.net.env.nm.gov/NMDWW/JSP/WaterSystemFacility.jsp?tinwsys_is_numbe...
1 of 2 4/11/2023, 11:41 AM
Well Detail Information Measure Code Value
(DDWD) Draw Down Water Depth 20 FT
(DPCP) Depth at Completion 260 FT
(GRDP) Grout Depth 140 FT
(STWL) Static Water Level 159 FT
(WLDM) Well Diameter 4 IN
WSF Flow Rates Type Quantity UOM
PUMP - Pump Capacity 5 GPM
WSF Measures Type Quantity UOM
DDWD - Draw Down Water Depth 20 FT
DPCP - Depth at Completion 260 FT
GRDP - Grout Depth 140 FT
STWL - Static Water Level 159 FT
WLDM - Well Diameter 4 IN
WSF Indicators Type Value Date
EMER - Emergency Power NO
NMDWB, Drinking Water Watch https://dww.water.net.env.nm.gov/NMDWW/JSP/WaterSystemFacility.jsp?tinwsys_is_numbe...
2 of 2 4/11/2023, 11:41 AM
New Mexico Environment Department UOCP Operator Lookup Drinking Water Program County Map of NM Water System Search Help
Water System Detail Information Water System No.: NM3590210 Federal Type: NC Water System Name: ANTON CHICO REST AREA WEST BOUND Federal Source: GW Principal County Served: GUADALUPE System Status: A Principal City Served: SANTA ROSA Activity Date: 03-15-2012
Water System Facility Facility ID No. 90210002 Type: WL - Well
Facility Name WELL #2 Status/Reason A
Water Type GW Water Type Date
Sample Points Sample Point ID Location Description Type
SP902100021 WELL #2 SR
Water System Facility Contacts Type Contact Communication
Facility Annual Operating Period(s) Effective Begin Date Effective End Date Start Month/Day End Month/Day
Latitude/Longitude Data Longitude Latitude Link
-105.084377 34.982616 Click here to view location on Terraserver
NMDWB, Drinking Water Watch https://dww.water.net.env.nm.gov/NMDWW/JSP/WaterSystemFacility.jsp?tinwsys_is_numbe...
1 of 2 4/11/2023, 11:42 AM
Well Detail Information Measure Code Value
(DDWD) Draw Down Water Depth 43 FT
(DPCP) Depth at Completion 260 FT
(GRDP) Grout Depth 123 FT
(STWL) Static Water Level 170 FT
(WLDM) Well Diameter 4 IN
WSF Flow Rates Type Quantity UOM
PUMP - Pump Capacity 5 GPM
WSF Measures Type Quantity UOM
DDWD - Draw Down Water Depth 43 FT
DPCP - Depth at Completion 260 FT
GRDP - Grout Depth 123 FT
STWL - Static Water Level 170 FT
WLDM - Well Diameter 4 IN
WSF Indicators Type Value Date
EMER - Emergency Power NO
NMDWB, Drinking Water Watch https://dww.water.net.env.nm.gov/NMDWW/JSP/WaterSystemFacility.jsp?tinwsys_is_numbe...
2 of 2 4/11/2023, 11:42 AM
Attachment 3
Photographs
2. Eastbound Rest Area well
ANTON CHICO REST AREAS
WATER/WASTEWATER IMPROVEMENTS
Photographs
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8/19/2024 DB23.1049
1. Eastbound Rest Area well building
3. Westbound Rest Area well building
ANTON CHICO REST AREAS
WATER/WASTEWATER IMPROVEMENTS
Photographs
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8/19/2024 DB23.1049
4. Westbound Rest Area well
Attachment 4
Westbound Rest Area Disposal Field Drawing
Attachment 5
NMED LWB Eastbound Rest Area Permit
6020 Academy Road NE, Suite 100 (505) 822-9400 Albuquerque, New Mexico 87109 www.dbstephens.com
August 4, 2023
Steve Pedro Environmental Scientist/Bureau Liquid Waste Specialist NMED Environmental Health Bureau 2538 Ridge Runner Road Las Vegas, New Mexico 87701 steven.pedro@env.nm.gov
Re: Liquid Waste Permit Application for Septic System/Leach Fields NMDOT Anton Chico Eastbound Rest Area on Interstate 40
Dear Steve:
Daniel B. Stephens & Associates, Inc. (DBS&A) is pleased to submit this permit application and attachments for the Anton Chico Eastbound Rest Area. The rest area is located at Interstate 40 (I-40) mile marker 251, approximately 25 miles west of Santa Rosa, New Mexico.
Background
The site is currently served by a conventional septic system and disposal mound. There is an existing effluent pump station for dosing to the disposal field that will continue to be used for low-pressure dosing. Using low-pressure dosing reduced the size of the minimum required absorption area to 3,900 square feet. The capacity of the existing system is adequate, but the existing disposal mound is not properly constructed or engineered and needs to be replaced.
The attachments to this letter are as follow:
Permit Application
Application Checklist
Site Plan Checklist
Attachment 1: Calculations
Attachment 2: Right-of-Way Maps
Attachment 3: 90% Engineering Drawings
Attachment 4: Specifications
Attachment 5: Documentation of Flows
Attachment 6: Dosing Pump Curve
Mr. Steve Pedro August 4, 2023
DB23.1049 | Cvt Ltr_Anton Chico EB_804.docx
Closing
Please do not hesitate to call Nate if you have any further questions or require any additional information. He can be reached at 505-321-7403 or narnold@geo-logic.com.
Sincerely, DANIEL B. STEPHENS & ASSOCIATES, INC.
Nate Arnold, E.I. Jennifer Hill, P.E.
Project Engineer Senior Engineer
JH/NA/rpf Attachments cc: Adam Romero, NMDOT
Permit Application
New Mexico Environment Department Environmental Health Bureau Liquid Waste Program
Application for Liquid Waste Permit or Registration
Form LW 401E 210126
Conventional Modify Treatment Unit Modify Disposal Field ATS/ADS Variance Commercial Register ATS/ADS Transfer Amendment
Section 1 General Information (Incomplete applications will be returned without action)
N M
ED
U
SE
O N
LY
Liquid Waste Processing Number:
Name (Property Legal owner, Inc., LLC, partnership, DBA, full legal name): Field Office ID: Application Date:
E-mail address(es): Phone: Facility Commercial or Institutional Name:
System Location: Physical Address, - (if needed, attach directions) Mailing Address (Invoices, permits, official correspondence):
City: County: Zip Code: City: State: Zip Code:
Uniform Property Code: Date of Record: Lot Size (0.01 acres): Total No. LW Systems on Property: Total Design Flow on Property:
Subdivision: Subdivision Plat Date: Unit/Phase: Block Lot/Tract Township Range Section
Water Supply Source: No. Connections: OSE Well Permit No.(505)827-6120, Info Private Water Well Location (long., lat. or physical address, city, state):
Onsite
Offsite
Storage
Private
Public
Shared
Public Water System Name: Irrigation well, flood irrigation area on lot?
YES NO
Enter all LW permit numbers for this lot: Will a petition for variance be submitted with this application?
YES NO
Section 2 Installer Information (NMED verifies all licensing information with CID and company registration with the Secretary of State’s Office)
Qualifying Party Name: Phone: Licensed Company Name: (as on file with CID) Corp., Inc.
LLC
Sole Prop.
LP, LLP
Owner
Mailing Address (street / PO Box, City, State, Zip): E-mail address:
CID License Classification: CID Company License No.:
MM-1 MM-98 MS-1 MS-3 Homeowner
I am the qualifying party for a licensed company by the State of New Mexico Regulation Licensing Department, Construction Industries Division (CID). I will either personally install the work myself or authorize company employee(s), ______________________________________________________________________________________________________________
(named here) to provide the services and labor for this permit application under my direct supervision.
Section 3 Authentication / Verification
By signing below, I attest that the information in this application is correct and true to the best of my knowledge. I understand the issuing of this permit does not relieve me from the responsibility of complying with all applicable provisions of the New Mexico Plumbing Code and the New Mexico Liquid Waste Disposal and Treatment Regulations. Obtaining this permit does not relieve me from the responsibility of obtaining any permit required by state, city or county regulation or ordinance or other requirements of state or federal law.
Page 2 must be attached for each proposed system on lot
Qualifying Party Authorized Rep.
Homeowner
Printed Name: Signature: Date Signed:
NM
ED
U
SE
O
NL
Y
ME
D
US
E
ON
NM
ED
US
E
ON
LY
NMED PERMIT TO CONSTRUCT
N/A Granted Granted with conditions Denied Cancelled
Conditions or Reasons for Denial:
NMED Inspector Name Printed: NMED Inspector Signature: Date: Permit to Construct No.
NMED LIQUID WASTE FEES (permits to construct and operate are valid only upon all fees are being paid), (Amendments no fee required) Conventional-1000gpd $225 1001-2000gpd $325 2001-5000gpd $500 Holding Tank Annual Renewal ($30) Variance small system $100
ATS/ADS -1000gpd $450 1001-2000gpd $550 2001-5000gpd $750 ATS /ADS Annual Renewal ($50) Variance large system $250
Total Fee Paid Date Paid Payment Received By
FINAL INSPECTION OF LW SYSTEM (902I, an approved final inspection report is valid for 180 days as a property transfer evaluation) Final Inspection
Conducted by NMED Final Inspection Date: NMED Inspector Name Printed: Installation Approved
Installation Approved with Conditions (see inspection form for conditions)
Installation Not Approved Contractor photo inspection authorized:
Photo inspection date: Date photos and Completed Form Received by NMED:
NMED PERMIT TO OPERATE (permits to operate holding tanks and ATS / ADS are only valid for one-year, annual renewals applications required)
NM
ED
U
SE
O
NL
Y
A permit for operation of the Liquid Waste system described herein is hereby: N/A Granted Granted with conditions Denied Cancelled Conditions or Reasons for Denial:
NMED Inspector Name Printed: NMED Inspector Signature: Date: Permit to Operate No.:
New Mexico Department of Transportation, District 4 Las Vegas adam.romero@dot.nm.gov (505) 718-2073 Anton Chico Rest Area - Eastbound
Anton Chico Rest Area - Eastbound PO Box 10
Santa Rosa Guadalupe 88435 Las Vegas NM 87701
13.30 1 3000
✔ 1 N/A 34.980578, -105.088761
Anton Chico Rest Area East Bound TU990042
Project to be bid
Jennifer Hill, P.E., Daniel B. Stephens & Assoc. Jennifer Hill Digitally signed by Jennifer Hill
Date: 2023.08.04 10:16:22
-06'00' 8/4/23
Liquid Waste Program
Application for Liquid Waste Permit or Registration
Form LW 401E 210126
If your lot has more than one LW system, you must fill out a separate application for each system. The site plan drawing must show all liquid waste systems located on your lot. Existing permitted systems must be identified with their LW Permit #. New, modified or unpermitted systems must be clearly labelled on the site plan. NMED agents are not authorized to amend or complete any portion of this application.
Liquid Waste Processing Number: Amendment
Treatment & Disposal System Design Section 1 Design Flow, Hydrology, and Soil Description
A. Wastewater Sources & Design Flow Calculations B. Hydrology Data (depth to limiting layers) C. Soil Description:
Facility Units (enter number) (Q) Flow, gpd Depth from ground surface to: Feet Type AR=
1.
RE
SI
DE
NT
IA
L
Single Family Residence A Bedrooms: Flow:
Seasonal high-water table Type Ia: Coarse Sand (or up to 30% gravel) 1.25
Single Family Residence B Bedrooms: Flow: Bedrock Type Ib: Medium Sand, 2.0
Multiple Family Units (4 or less units, apartments)
Bedrooms Bedrooms Bedrooms Bedrooms Flow:
Caliche Loamy Sand
Cluster System: (description) Flow:
Clay soils, tight clay Type II: Sandy Loam, Fine Sand, Loam 2.0
2.
CO
MM
ER
CI
AL
Multiple Family Units (5 or more units, apartments)
Method of Design Flow Calculation:
Table 201.1 PE (Calc. Sheet) Attached Water Meter Data Attached Calc. Sheet Attached
Flow: Gravel, cobbles, highly permeable soil, greater than 30% gravel Type III: Silt, Silt Loam, Clay Loam, Silty Clay Loam, Sandy Clay Loam
2.0Commercial / Institution: Test Hole / Soil Borings Used: YES NO Other Flow: Soil Classification Methodology used:
Web Soil Survey Jar Test Hand Sampling
(type): Total Flow for this LW System: Q= Total Flow: Laboratory:
Other Methodology:
Sieve Type IV: Sandy Clay, Silty Clay, Clay 5.0
Section 2. Treatment Unit and Pump Design: (Note: 202D, E & F, tank modification or registration requires pumping, and be within one tank size)
A.
C
ON
V. Primary Treatment Unit
Septic Tank(s)
No. Septic Tank(s)
Manufacturer: Series / Model / Certification No.: Capacity (gallons) Cover Depth:
Tank Bedded in:
(circle one) Undisturbed Soil Compact Soil Pea
Gravel Sand Tank Back Fill:
(circle one) Native soil with no rocks Pea Gravel Sand (Tanks are approved for max 3’ cover unless otherwise approved / marked)
B.
PU
MP
Pump Tank Pump Basin
Manufacturer: Series / Model: Capacity (gallons) Cover Depth:
Pump Dual Pump
Manufacturer: Series / Model: Pump Curve Attch’d:
YES NO
Effluent Pump:
YES NO
C.
AL
TE
RN
AT
IV
E
AT
S
Secondary Standard Conditional
Experimental
Required Voluntary
Manufacturer: Series / Model: Capacity (gallons) Cover Depth:
Tertiary
Disinfection 604
UV
Ozone Chlorine
Required Voluntary
Manufacturer: Series / Model: All Tank Burial Instructions Attached. Applicant has read and understands proper burial instructions & will adhere:
YES NO Initial Here:
Section 3 Disposal System Design, Components and Calculations: (Note: 202D&E, disposal field modification requires tank pumping, addition of filter and risers, I/O baffle or T’s checked)
A. Minimum Required absorption area, calculated (Multiply Design Flow (Q) times Application Rate (AR):
Q X AR = Min. Sq. Ft. Required: Existing Sq. Ft. utilized: + Proposed Sq. Ft.: = Total Disposal Area Sq.Ft.
B. Design Components: Distribution Box Tee Drop Box Alternating Drainfield Valve Elevated System Other:
DI
SP
OS
AL
Di sc ha rg ing
Pipe & Gravel 701 Elevated System
Trench Width: Depth Gravel Below Pipe: Total Linear Feet: No. of Trenches: Max Trench Depth: Length, each trench: Trench Spacing (ft): Proposed Sq. Ft.:
Chamber 701 Synthetic Aggr. 701.
Mfr. Model No & Sizing Credit (sf/lf, or unit): Total Linear Feet: No. of Units: Max Trench Depth: Length, each trench: Trench Spacing (ft): Proposed Sq. Ft.:
C.
C
ON
VE
NT
IO
NA
L 1. Seepage Pit 702
Absorption Bed 701B
Dimensions (L x W): Pit Depth below invert: Pit Excavation Depth: Bed Aggregate Depth: Bed Lateral Spacing (6ft max):
Aggregate Cubic Yards: Proposed Sq. Ft.:
2.
No n-dis ch ar gin g Holding Tank 808
No. of Tank(s) Manufacturer: NM Certification No.: (optional for concrete) Capacity: Cover Depth: High Water Alarm at 80%?
YES NO Set at:__________”
Vault 801 Privy 801 (outhouse)
(design plans attached): YES NO Split Flow 811: (complete holding tank section & septic tank & conventional disposal section):
Other (description):
Section 4 Alternative Disposal System (ADS) Design, Components and Calculations For all ADS’s – calculation sheets & site plan drawings (plan view with cross section views) must be submitted with this permit application.
AL
TE
RN
AT
IV
E
DI
SP
OS
AL
1.
Di sc ha rg in g Wisconsin Mound Unlined ET Bed Effluent Irrigation Re-use (804 reduced setbacks allowed) Sand-Lined Trench Sand ASTM Specs Attached?
YES NO
Bottomless Sand Filters Sand ASTM Specs Attached?
YES NO LPD 807 LPP 807 Wetland Graywater Drip Irrigation
ET Bed (unlined, gravity fed) (fine to med Sand ASTM Specs Attached?)
YES NO Other (description):
2.
No n-di sc ha rg in g Lined ET Bed 805 (fine to med Sand ASTM Specs Attached?)
YES NO
Liner Material & Thickness (mils): Dimensions (L x W) & sq. ft.:
Lined Lagoon
(DP Transfers / Registrations Only)
Liner Material & Thickness (mils): Dimensions (L x W) & sq. ft.:
Other (description system above, liner specs attached):
Section 5 Setbacks, Site Plan & Attachments (check those that apply)
YES NO 1. Does proposed system meet all setbacks required per Table 302.1?
YES NO 2. Site plan attached which shows all structures, LW systems, and wells / waters within 200’, with all setbacks clearly shown?
N/A YES NO 3. If ATS or ADS, all requirements under section 403 are submitted, including calculations and drawings?
Supporting Documents Included: Survey or Plat Floorplan Warranty Deed or Tax Bill Other:
0 0 159
0 0 >4
0 0 0 0 0 2-4
Rest Area
3,000
3,000 Perc Test
To be determined 7500
Zoeller Basin 12.24
Turbine STEP System, 55 gpm dual pumps 5034-0019 1.5HP, 230V/1Ph, 13.1 Amp ✔ ✔
3,000 Off 0 00 3900 3900
Low Pressure Dosing
1.5 1 1200 8 2 150 2 3900
Reset / Clear Form LasVegas.ehb@state.nm.us
Application Checklist
Revised 8/1/10
NMED Use Only Permit Processing No.__________________________ Applicant Name_______________________________
You must submit this form with your application. The applicant shall check the box next to Yes or No or N/A (Not Applicable) for each box to verify that the necessary information has been submitted. Print and sign your name at the bottom.
New Mexico Environment Department Application Checklist - LIQUID WASTE SYSTEM
For All Liquid Waste Permit Applications Applicant Verification
Application is filled out completely with minimal cross-outs and no whiteout, no blanks Yes No
Detailed site plan is attached and includes all requirements and meets all setbacks (and Liquid Waste Site Plan Submittal Checklist is attached)
Yes No
Warranty deed, tax bill or other form of ownership verification is attached (requires county clerk stamp)
Yes No
Copy of plat or recorded survey is attached (requires county clerk stamp) (if these documents are not available other documents showing property size and easements must be provided)
Yes No
Floor plan for all dwellings or structures is attached (All rooms are clearly labeled, identifying bedrooms and rooms that might reasonably be used as bedrooms)
Yes No
For Liquid Waste Permit Applications Proposing Advanced Treatment Applicant Verification
A fully-labeled treatment and disposal system diagram is attached. The location and diagram of the sampling port is clearly shown. Disinfection unit is shown(If applicable)
Yes No
The system being proposed is on the “Advanced Wastewater Treatment Systems Approved by NMED” list
Yes No
A detailed design statement is attached which includes all of the following: Explains why an ATU is required on this site, discussion of site conditions & operational details
Yes No
A maintenance contract for the duration of the permit with a factory certified MSP (signed by both homeowner and MSP) is attached
Yes No
If Voluntary System, Disclosure Statement is included (disclosure statement- indicates ATS is not required, maintenance contract for duration of the permit, signed by homeowner)
Yes No N/A
A sampling contract for the duration of the permit with an approved sampling provider (signed by both the homeowner and sampling provider) is attached
Yes No N/A
For Liquid Waste Permit Applications Proposing Alternative Disposal Applicant Verification
A detailed design statement is attached: Explains why an ADS is required on this site, it meets a proven design criteria, statement of site conditions & operational details
Yes No
A diagram & design specifications of the disposal system including manufacturer’s specifications (or proven design specs) are attached
Yes No
Detailed site drawings showing plan, profile and cross-section views are attached Yes No
Detailed design calculation sheets or worksheets are attached Yes No N/A
Pump specifications and sizing information are attached Yes No N/A
Applicant Name Printed Applicant Signature Date
NMED Staff Name Printed NMED Staff Signature Date
Nate Arnold 7/27/2023
Site Plan Checklist
NMED Use Only Permit Processing No.______________________________
Revised 8/1/10
Applicant_____________________________________
This checklist must be submitted with your application. The applicant shall check the box next to Yes, No or N/A (not applicable) for each requirement to verify that your site plan includes all the necessary information. Print and sign your name at the bottom.
New Mexico Environment Department
SITE PLAN DRAWING- LIQUID WASTE SYSTEM
Submittal Checklist
Site Plan Requirements Applicant
Verification North Arrow shown Yes No
Proposed system components shown and labeled Yes No
Scale of drawing is clear and readable Yes No
Access Roadways, driveways and LW Utility Easements shown Yes No N/A
Direction of slope and drainage toward LW system shown Yes No N/A
Existing LW systems shown (w/permit # or labeled “Unpermitted”) Yes No N/A
Property Lines Property line boundaries with distances shown And setback distances to tank and drainfield are met and labeled --------
Yes No N/A Yes No N/A
Wells and Water Supply Lines All Private on-site & neighbor’s wells(within 100’ of LW system) shown And setback distances to tank and drainfield are met and labeled ------
Yes No N/A Yes No N/A
All Public on-site & neighbor’s wells(within 200’ of LW system) shown And setback distances to tank and drainfield are met and labeled -----
Yes No N/A Yes No N/A
All irrigation wells within 100 feet of LW Disposal System are shown And setback distances to tank and drainfield are met and labeled --------
Yes No N/A Yes No N/A
All Drinking water lines are shown And setback distances to tank and drainfield are met and labeled --------
Yes No N/A Yes No N/A
Waters of the State means all interstate and intrastate waters including natural ponds and lakes, playa lakes, reservoirs, perennial streams and their tributaries, intermittent streams, sloughs, prairie potholes and wetlands All Waters of the State (within 100’ of LW Disposal System) shown And setback distances to tank and drainfield are met and labeled --------
Yes No N/A Yes No N/A
Canals (See definition 20.7.3.7 (C.1)) Acequias, Unlined canals and Drainage ditches are shown And setback distances to tank and drainfield are met and labeled -------------
Yes No N/A Yes No N/A
Lined canals are shown And setback distances to tank and drainfield are met and labeled --------
Yes No N/A Yes No N/A
Arroyos (see definition 20.7.3.7 (A.7)) All Arroyos are shown And setback distances to tank and drainfield are met and labeled --------
Yes No N/A Yes No N/A
Buildings and Structures All Buildings and Structures shown and labeled (Use of structure identified) And setback distances to tank and drainfield are met and labeled --------
Yes No N/A Yes No N/A
All Retaining Walls (existing and proposed) shown and labeled And setback distances to tank and drainfield are met and labeled -------
Yes No N/A Yes No N/A
Retention/Detention Areas (areas on parcels that are specifically designed to hold and capture water from precipitation) All Retention/Detention Areas shown and labeled And setback distances to tank and drainfield are met and labeled -------
Yes No N/A Yes No N/A
NMED Comments:
Installer Name Printed Installer Signature Date
NMED Staff Name Printed NMED Staff Signature Date
Daniel B. Stephens & Associates
Nate Arnold 07/27/2023
Attachment 1
Calculations
Calculation Cover Sheet
April 21, 2023 DB23.1049 | 1_PerfPipe_LeachField.docx
Project Name NMDOT Anton Chico Rest Area Project Number DB23.1049
Calculation Number 1 Discipline Engineering No. of Sheets 3
PROJECT:
Alternatives Evaluation for on-site wastewater disposal at Anton Chico Rest Areas
SITE:
Westbound and Eastbound rest areas
SUBJECT:
Perforated pipe and gravel leach field calcs, sized for a design flow of 3,000 gpd.
SOURCES OF DATA:
1. NMDOT provided water use data for both rest areas for a period of 3 years, which is the basis of the design flow
2. Test holes were excavated and percolation tests conducted for both rest areas in March of 2023. The soil type was determined to be Sandy Loam (type II)
SOURCES OF FORMULAE & REFERENCES:
1. NMAC 20.7.3 Liquid Waste Disposal and Treatment
2. US EPA Design Manual Onsite Wastewater Treatment and Disposal Systems, 1980, Table 7-2, pg 214.
3. LW 703J Drainfield Size Credits for Trench Pipe and Gravel Dimensions 190509 mb
4. NMAC 20.7.3 Liquid Waste Disposal and Treatment
Preliminary Calculation Final Calculation Supersedes Calculation No.
Rev. No. Revision Calculation By Date Checked By Date Approved By Date
0 Preliminary Calc NA 3/27/2023 JH 3/27/2023 JH 3/27/2023
1 Final Calc NA 4/21/2023 JH 4/24/2023 JH 4/24/2023
Calculation Sheet
Project No. DB23.1049 Date 4/21/2023
Subject Calculate required size of leach field Sheet 1 of 3
By Nate Arnold Checked By Jennifer Hill Calculation No. 1
DB23.1049 | 1_PerfPipe_LeachField.docx 1
1. Purpose
Size the leach field for disposal by perforated pipe and gravel.
2. Given
Eastbound Rest Area (Low Pressure Pipe):
Design flow = 3,000 gpd Trench width = 1.5’ Gravel depth = 1’ Min pipe cover = 1’ Total trench depth = 2’ 2’ spacing between trenches NMED Application rate = 2.0 SF/gpd, based on Type II soil Length dependent on available area Absorption credit = 5 SF/LF
Westbound Rest Area (Gravity Pipe):
Design flow = 3,000 gpd Trench width = 3’ Gravel depth = 2’ Min pipe cover = 2’ Total trench depth = 4’ 6’ spacing between trenches NMED Application rate = 2.0 SF/gpd, based on Type II soil Length dependent on available area Absorption credit = 7 SF/LF
Trench sizing and spacing is based on NMAC standards for low pressure pipe and gravity pipe dosing systems.
3. Method
Two methods were compared.
Calculation Sheet
Project No. DB23.1049 Date 4/21/2023
Subject Calculate required size of leach field Sheet 2 of 3
By Nate Arnold Checked By Jennifer Hill Calculation No. 1
DB23.1049 | 1_PerfPipe_LeachField.docx 2
Method 1: From NMAC 20.7.3.703, the application rate is determined based on Soil Type. The total area required was determined based on 6’ between trenches for the westbound rest area and 2’ between trenches for the eastbound rest area.
Method 2: The measured percolation rate is used to determine an application rate.
Method 1 produces a more conservative results, and therefore the results below are based on Method 1.
4. Solution
Eastbound Rest Area:
6,000 SF absorption area required 1,200 LF of pipe minimum (based on 5 SF/LF absorption credit, per NMED standards) 8 trench lines 150’ length 1200 LF of pipe 2 feet between trenches Dimensions = 150’ x 26’ (total area 3,900 SF)
Westbound Rest Area:
6,000 SF absorption area required 860 LF of pipe minimum (based on 7 SF/LF absorption credit) 8 trench lines 110’ length 880 LF of pipe, rounded up based on trench length Dimensions = 110’ x 66’ (total area 7,260 SF)
Existing Conditions:
Q = 3,000 gpd Maximum daily flow
Assumed dimensions of proposed disposal field trench lines a,b
1.5 feet wide
150 feet long
1 feet gravel depth
1 feet min pipe cover
2 feet total depth
5 Absorption credit (SF/LF) d
375 ft absorption area per trench
Method: Two methods will be compared, one from the NMED and the other from EPA.
NMED Method
From NMED reference the Absorption Area(AA) is calculated with this equation based on the soil type:
AA = Q x AR (equation 1) where AR = application rate in ft /gal/day given in table below, Q is daily flow in gpd given above
Soil Type Application Rate
Ia 1.25
Ib 2
II 2
III 2
Find the absorption area based on Application Rate from NMAC 20.7.3.703 Table 703.1:
Application Total Required Total # of Total Footprint of leachfield
Rate Absorption Area Trench Lines
(ft /gal/day) ft ft
Acres Min. Length of Pipe (ft)
2.00 6,000 8.0 3,900 0.09 1200 150 x 26
EPA Method
The absorption area is found with this method by dividing the average daily flow rate by the application rate.
Based on Application Rate from EPA Table 7-2 a :
Total Required Total # of Total Footprint of leachfield
Absorption Area Trench Lines
(gpd/ft ) ft ft
Acres Min. Length of Pipe (ft)
1.2 2,500 7 3,375 0.1 500.0 150 x 23
Source: USEPA Design Manual Onsite Wastewater Treatment and Disposal Systems, 1980, Table 7-2, pg 214.
b Source: New Mexico Environment Department (NMED) Liquid Waste Disposal Regulations (NMAC 20.7.3, 9/1/13) c Source: LW 703J Drainfield Size Credits for Trench Pipe and Gravel Dimensions 190509 mb
D Source: NMAC 20.7.3.807 Low Pressure Disposal Systems
Dimensions (ft)
This is a calculation to determine the area and materials needed to construct a subsurface disposal system for the liquid waste disposal field at Anton Chico Eastbound Rest Area.
Calculation: Daily flow in gallons per day of liquid waste, find the area and materials quantities for a subsurface soil disposal field.
(2' between trenches)
Dimensions (ft)
From the EPA reference, the AA is calculated using the measured percolation rate to find an application rate from Table 7-2, page 214. For the measured percolation rate of 4.7 minutes/inch, an aplication rate of 1.2 gpd/ft was used.
(6' between trenches)
Coarse Sand or up to 30% gravel
Medium Sand, Loamy Sandy
Sandy Loam, Fine Sand, Loam
Silt, Silt Loam, Clay Loam, Silty Clay
Loam, Sandy Caly Loam
Soil Texture
\\ss6abq\DataS\Projects\DB23.1049_NMDOT_Anton_Chico_Water-WW\Engineering\Calculations\Leach Field\1_Anton Chico_Leach field calcs (perforated pipe) DRAFT
Existing Conditions:
Q = 3,000 gpd Maximum daily flow
Assumed dimensions of proposed disposal field trench lines a,b
3 feet wide
110 feet long
2 feet gravel depth
2 feet min pipe cover
4 feet total depth
7 Absorption credit (SF/LF) c
660 ft absorption area per trench
Method: Two methods will be compared, one from the NMED and the other from EPA.
NMED Method
From NMED reference the Absorption Area(AA) is calculated with this equation based on the soil type:
AA = Q x AR (equation 1) where AR = application rate in ft /gal/day given in table below, Q is daily flow in gpd given above
Soil Type Application Rate
Ia 1.25
Ib 2
II 2
III 2
Find the absorption area based on Application Rate from NMAC 20.7.3.703 Table 703.1:
Application Total Required Total # of
Rate Absorption Area Trench Lines
(ft /gal/day) ft ft
Acres Min. Length of Pipe (ft) Actual Length of Pipe (ft)
2.00 6,000 8.0 7,260 0.17 860 880 110 x 66
EPA Method
The absorption area is found with this method by dividing the average daily flow rate by the application rate.
Based on Application Rate from EPA Table 7-2 a :
Total Required Total # of Total Footprint of leachfield
Absorption Area Trench Lines
(gpd/ft ) ft ft
Acres
1.2 2,500 4 3,300 0.1 110 x 30 a Source: USEPA Design Manual Onsite Wastewater Treatment and Disposal Systems, 1980, Table 7-2, pg 214.
b Source: New Mexico Environment Department (NMED) Liquid Waste Disposal Regulations (NMAC 20.7.3, 9/1/13) c Source: LW 703J Drainfield Size Credits for Trench Pipe and Gravel Dimensions 190509 mb
Dimensions (ft)
This is a calculation to determine the area and materials needed to construct a subsurface disposal system for the liquid waste disposal field at Anton Chico Westbound Rest Area.
Calculation: Daily flow in gallons per day of liquid waste, find the area and materials quantities for a subsurface soil disposal field.
Soil Texture
Coarse Sand or up to 30% gravel
Medium Sand, Loamy Sandy
Sandy Loam, Fine Sand, Loam
Silt, Silt Loam, Clay Loam, Silty Clay
Loam, Sandy Caly Loam
Dimensions (ft)
From the EPA reference, the AA is calculated using the measured percolation rate to find an application rate from Table 7-2, page 214. For the measured percolation rate of 3.9 minutes/inch, an aplication rate of 1.2 gpd/ft was used.
(6' between trenches)
Total Footprint of leachfield
(6' between trenches)
\\ss6abq\DataS\Projects\DB23.1049_NMDOT_Anton_Chico_Water-WW\Engineering\Calculations\Leach Field\1_Anton Chico_Leach field calcs (perforated pipe) DRAFT
LW 703J Drainfield Size Credits for Trench Pipe and Gravel Dimensions 190509 mb
1’
0.5’
2’ 3’
2 sf/lf 3 sf/lf 4 sf/lf
1’
1’
2’ 3’
3 sf/lf 4 sf/lf 5 sf/lf
3’ 1’
1.5’
2’
4 sf/lf 5 sf/lf 6 sf/lf
Depth of Gravel below pipe
Depth of Gravel below pipe
Depth of Gravel below pipe
Credit for Sizing, square feet per linear foot (sf/lf) for trench with pipe and gravel
Maximum credit allowed of 7sf /lf
TRENCH WIDTH
Maximum 3’
20.7.3.703 DESIGN; AREA OF DISPOSAL FIELD AND SEEPAGE PITS:
J. Disposal trenches:
(1) The total absorption area shall be calculated utilizing the total trench bottom and sidewall area below the distribution pipe.
(2) The total absorption area shall not exceed seven square feet per linear foot of trench.
(3) A minimum of 300 square feet of absorption area shall be provided for each system exclusive of any hard pan, caliche, rock, clay or other impervious formations.
Minimum depth of gravel below pipe 6”
5’ MINIMUM
4’ MINIMUM
4’ MINIMUM
5’ MINIMUM
4’ MINIMUM
4’ MINIMUM
TRENCH WIDTH
Minimum 1’
LW 703J Drainfield…
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