Amendment_2_Questions_and_Answers_0002.pdf

PDF 1 MB Posted May 17, 2023

Attached to: GRTE IMPROVE SIGNAL MTN WASTEWATER SYST. Federal contract opportunity
Solicitation number: 140P1423R0010
Issued by: Department of the Interior National Park Service Intermountain Region

About this file

Written by GovTribe AI · Dec 28, 2023

This document provides details for a federal solicitation seeking improvements to the Signal Mountain Wastewater System located in Grand Teton National Park, Wyoming. The solicitation is a total set-aside for Women-Owned Small Businesses and involves construction improvements including a new headworks building, mechanical aerators, fencing, electrical work, and force main replacement. The estimated value of the contract is between $1 million and $3 million and the period of performance is 365 days from the notice to proceed. Questions regarding the solicitation are due by a specified date prior to offers being submitted via email by the response deadline in accordance with instructions in the solicitation and in the System for Award Management. The National Park Service Intermountain Region is the contracting agency.

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Other files attached to GRTE IMPROVE SIGNAL MTN WASTEWATER SYST., newest first.
File	Type	Posted
Amendment_4_Questions_and_Answers_0004.pdf	PDF	May 18, 2023
Sol_140P1423R0010_Amd_0004.pdf	PDF	May 18, 2023
Sol_140P1423R0010_Amd_0003.pdf	PDF	May 17, 2023
Sol_140P1423R0010_Amd_0002.pdf	PDF	May 17, 2023
Sol_140P1423R0010_Amd_0001.pdf	PDF	May 15, 2023
Amendment_1_Questions_and_Answers_0001.docx	DOCX document	May 15, 2023
Site_Visit_Sign_In_0001.jpeg	JPEG file	May 15, 2023
B08_40610683_Attachment_6_General_References.pdf	PDF	Apr 19, 2023
A06_40610683_GRTE_174170_-_Signal_Mtn_WWTP_-_Final_Drawings_-_01_09_23.pdf	PDF	Apr 19, 2023
B03_40610683_Teton_County_Heavy_WY20230003_rev_01062023.pdf	PDF	Apr 19, 2023
Construction_Contract_Administration.docx	DOCX document	Apr 19, 2023
Sol_140P1423R0010.pdf	PDF	Apr 19, 2023
B08_40610683_Attachment_8_Past_Performance_Questionnaire.docx	DOCX document	Apr 19, 2023
B08_40610683_Attachment_7_Limitation_on_Subcontracting_Report.xlsx	XLSX spreadsheet	Apr 19, 2023
A06_40610683_GRTE_174170_-_Signal_Mtn_WWTP_-_Final_Specs_-_01_09_23.pdf	PDF	Apr 19, 2023
B08_40610683_Attachment_5_Project_Experience_Form.docx	DOCX document	Apr 19, 2023

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140P1423R0010 – GRTE Signal Mountain Water Wastewater System Rehab – Questions and Answers Amendment 2

1. On drawing C.2 (sheet 5) “ 5HP 230V & 45 degree,” (this is a directional aspirator) is in direct conflict with Spec Section 46-51-13 Mechanical Aerators P 474 references 5HP 460V vertical surface aerators. Please confirm which type of equipment, volts and float material are required. If you could please clarify in an addendum.

a. As noted in Spec Section 46 51 12, 1.3.D, the Mechanical Aerators will have 5 HP, 460 V, 3 phase motors. This matches Dwg E.3, Detail 3 Typical Mech Aerator Control Schematic. As noted in Spec Section 46 51 12, 2.2.D, the Flotation device includes a 14-gage 304 Stainless Steel Float Hull, Closed cell polyurethane foam floats and stainless steel mooring connections. Please see revised table on Sheet C.2.

2. Drawing C.7 Sheet 10 shows Aqua Jet surface aerators with SS float, aerator connection detail as 3pt mooring? The aerator location site plan shows span mooring. Please confirm mooring arrangement for the surface aerators. If span mooring is still the desired mooring (see attached page 4 is the shore span mooring arrangement).

a. Span mooring seems to be shown on the drawings, and should be installed per manufacturer's instruction, as described in Aqua Aerobic Systems Span Mooring Cable System Installation Instructions.

3. 1.2 A. Clarification – The Endura series motor with an Aqua-Jet surface aerator does not have to be greased for the first 3 years. We do not recommend supplying grease upon receiving new units as the grease would expire before it is time to utilize.

a. Please provide the grease as noted in Spec Section 46 51 13, 1.8.A.

4. 1.3.D.3 Max RPM for a 5HP surface aerator is 1800 RPM. For a surface aerator.

a. Change Spec Section 46 51 13, 1.3.D.3 from 1,200 rpm to 1,800 rpm.

5. 2.2 D 1 (stainless float) & 2.2 K1. & 2 (Fiberglass floats)-.There is a conflict on which float material you are requesting. Please update an addendum float material.

a. Delete Spec Sec 46 51 13, 2.2.K.1&2.

6. 2.3 E. 3.Please confirm which material of floats you are requiring. 304 SS or fiberglass (FSS). As for reserve buoyancy of a 5HP unit float. For SS it is 630lbs and for fiberglass it is 840lbs each.

a. Change Spec Sec 46 51 13, 2.3.E.3 from "2,245 lbs" to "630 lbs" (for Stainless Steel).

7. 2.3 G.2 The volute wall thickness for a (5HP) surface aerators is .135.”

a. Change Spec Sec 46 51 13, 2.3.G.2 from "3/16 inch" to "0.135 inch".

8. The industry standard for dynamic balancing vibration standard maximum is no greater than 2.0 mils displacement; no greater than 0.200 in/second velocity. I wanted to ask is there a reason the 5HP unit would be dynamically balanced within .12 inches per second velocity measurement? These are pretty small units.

a. Revise Spec Section 46 51 13, 3.2.A.1 as follows: “1. Entire rotating assembly including the motor rotor, shaft, shaft accessories, and impeller: dynamic balancing vibration shall be no greater than 2.0 mils displacement; no greater than 0.200 in/second velocity measured at the upper and lower motor bearing.”

N=1539588.32 E=2483821.84

N=1539565.35 E=2483859.00

N=1539512.27 E=2483776.62

N=1539694.64 E=2483701.80

N=1539704.65 E=2483751.61

N=1539636.52 E=2483808.91

N=1539601.79 E=2483821.35

N=1539531.23 E=2483827.04

SITE IMPROVEMENTS OVERVIEW

DELETE TABLE

RELOAD X-REF W/MECH AERATOR

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SITE IMPROVEMENTS

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OVERVIEW

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SCALE OF FEET

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FINAL CONSTRUCTION DRAWINGS

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NELSON ENGINEERING

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DATE:

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DESIGNED:

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TECH. REVIEW:

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SUB SHEET NO.

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PMIS/PKG NO.

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DRAWING NO.

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SHEET

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TITLE OF SHEET

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AutoCAD SHX Text 176702

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AK/BJG

AutoCAD SHX Text 10/04/2022

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GRAND TETON NATIONAL PARK, WYOMING

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SIGNAL MOUNTAIN WASTEWATER SYSTEM

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REVISION

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SITE LEGEND

AutoCAD SHX Text INDEX CONTOUR MINOR CONTOUR WATER SERVICE SEWER LINE FENCE BURIED POWER LIMITS OF DISTURBANCE STAGING AREA MONITORING WELL POWER TRANSFORMER

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SIGNAL MOUNTAIN WWTP IMPROVEMENTS DESIGN CRITERIA

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EQUIPMENT

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QTY

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DETAILS

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SEPTAGE RECEIVING

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AutoCAD SHX Text DIMENSIONS 18' x 6' x 3', 8"-12" GROUT CHANNELS

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TOTAL VOLUME 2,400 GAL

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SEPTAGE TRUCK QUICK-CAM CONNECTION, 6 INCH

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MECHANICAL BARSCREEN

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CAPACITY: 1 MGD

AutoCAD SHX Text MANUFACTURER & MODEL: HUBER Ro 1

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MOTORS: CLASS 1 DIV 2

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HEADWORKS BUILDING

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AutoCAD SHX Text DIMENSION: 26' x 12'

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STEEL FRAMED WITH METAL ROOFING & SIDING

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DECANT POND MANHOLE

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SIZE: 6-FT

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DEPTH: 6 FT

AutoCAD SHX Text SMOOTH WEIR: 15" WIDE x ±30'

AutoCAD SHX Text SAWTOOTH WEIR: 9" WIDE x ±26'

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MECHANICAL AERATORS

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HP, EACH: 5

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MANUFACTURER & MODEL: FLUENCE TORNADO

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PONTOON FLOATS: 2/AERATOR

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MOTOR: 5 HP, 3 PHASE, 230 V, 60 HZ

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OPERATING ANGLE RANGE: 45 DEG TO 60 DEG

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UTILITY SERVICE BARGE

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MANUFACTURER & MODEL: AQUA CYCLE 8X12

AutoCAD SHX Text PLATFORM SIZE: 8' x 12'

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FLOATATION: 2 - 23" AL PONTOONS

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HEAVY-DUTY OUTBOARD MOTOR MOUNT

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DAVIT CRANE

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AERATION CELL 1

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AERATION CELL 2

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POLISHING CELL 3

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EXISTING 6" CIP FORCE MAIN

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WELL SM-5

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36'X16' CONCRETE SEPTAGE DUMP PAD, SEE SHEET C.5

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FORCE MAIN REALIGNMENT, SEE SHEET C.3

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EXISTING ACCESS ROAD

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INSTALL NEW HEADWORKS BUILDING, SEE SHEET C.6

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CONCRETE DRYING BED

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WINTER DRAINFIELD

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DRYING BED (OLD SLUDGE POND)

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CONNECT TO EXISTING WATER SERVICE, SEE SHEET C.4

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INSTALL CONCRETE SEPTAGE DUMP RECEIVING VAULT, SEE SHEET C.5

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ELECTRICAL BUILDING

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EXISTING DISCHARGE MANHOLE TO REMAIN

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INSTALL NEW GATE, SEE SHEET C.4

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INSTALL NEW FENCE, SEE SHEET C.4

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INSTALL 12" DIP ABOVE GRADE DISCHARGE PIPE, SEE SHEET C.4

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APPROXIMATE LOCATION OF ABANDONED BLOWER LINE AND VALVES

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INSTALL NEW TRANSFORMER, COORDINATE WITH LVE, SEE SHEET E.1

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INSTALL FORCE MAIN BYPASS, SEE SHEET C.3

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FLOOR DRAIN AND TRENCH DRAIN LINE, SEE SHEET C.6

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LIMITS OF DISTURBANCE

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EXISTING 3-PHASE POWER TO THE TRANSFORMER

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TREES TO REMAIN

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INSTALL DECANT MANHOLE, SEE SHEET C.7

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REPLACED AERATOR, TYP. 9 LOCATIONS, SEE SHEET C.7

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SEE SHEET E.1 FOR BURIED POWER REQUIREMENTS TO AERATORS

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UTILITY BARGE

Sherri Line

Sherri Callout

AQUA AEROBICS SURFACE MECHANICAL AERATORS

MOTOR: 5 HP, 3 PHASE, 460 V, 60 HZ

Sherri Oval

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AMENDMENT 2

File details come from the government source that posted it. Updated May 17, 2023.