36C24718B0634-0002000.docx

5. PROJECT NUMBER (if applicable)

CODE

7. ADMINISTERED BY

2.

AMENDMENT/MODIFICATION NUMBER

CODE

6. ISSUED BY

8. NAME AND ADDRESS OF CONTRACTOR

4. REQUISITION/PURCHASE REQ. NUMBER

3. EFFECTIVE DATE

9A. AMENDMENT OF SOLICITATION NUMBER

9B. DATED

PAGE

OF PAGES

10A. MODIFICATION OF

CONTRACT/ORDER NUMBER

10B. DATED

BPA NO.

1. CONTRACT ID CODE

FACILITY CODE

CODE

Offers must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended, by one of the following methods:

The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offers

E. IMPORTANT:

is extended,

(a) By completing Items 8 and 15, and returning __________ copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted; or (c) By separate letter or electronic communication which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY is not extended.

12. ACCOUNTING AND APPROPRIATION DATA

(REV.

11/2016) is required to sign this document and return ___________ copies to the issuing office.

is not, A. THIS CHANGE ORDER IS ISSUED PURSUANT TO:

Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE CONTRACT ORDER NO. IN ITE M 10A.

15C. DATE SIGNED

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES

SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR

43.103(b).

RESULT IN REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by letter or electronic communication, provided each letter or electronic communication makes r eference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

C. THIS SUPPLEMENTAL AGREEMENT IS

ENTERED INTO

PURSUANT TO AUTHORITY OF:

D. OTHER

BY

Contractor

16C. DATE SIGNED

14.

DESCRIPTION OF AMENDMENT/MODIFICATION

16B. UNITED STATES OF AMERICA

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15A. NAME

AND TITLE OF SIGNER

16A. NAME AND TITLE OF CONTRACTING OFFICER

15B. CONTRACTOR/OFFEROR

STANDARD FORM 30

PREVIOUS EDITION NOT USABLE

Prescribed by GSA - FAR (48 CFR) 53.243 (Type or print) (Type or print) (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

(Number, street, county, State and ZIP Code) (If other than Item 6) (Specify type of modification and authority) (such as changes in paying office, appropriation date, etc.)

(If required)

(SEE ITEM 11)

(SEE ITEM 13)

(X)

CHECK

ONE

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS,

IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

11. THIS ITEM ONLY APPLIES TO AMENDMENTS

OF SOLICITATIONS

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

(Signature of person authorized to sign) (Signature of Contracting Officer) 08-17-2018 679-15-101 36C247 Department of Veterans Affairs Central Alabama Veterans Health Care 215 Perry Hill Road Montgomery AL 36109-3798

SEE ITEM 6

To all Offerors/Bidders

36C24718B0634 07-19-2018

X X X THIS AMENDMENT INCORPORATES THE SITE VISIT ATTENDANCE RECORD AND RFI QUESTIONS AND RESPONSES.

SEE PAGE TWO CONTINUATION

SHERRI D. MITCHELL

CONTRACTING OFFICER

RFI #001 SOLICITATION 36C24718B0634 LEGIONELLA RFI Questions

1. What is the temperature of the water in the hot water distribution system?

a. Circulating 140 F water.

2. The specifications state, “The continuous water monitoring system subcontractor shall have in-place facility within 50 miles with technical staff, spare parts inventory for the next five (5) years, and necessary test and diagnostic equipment to support the control systems.”

Spare parts can be shipped overnight in emergencies, and most problems can be detected before a total system shut down. Also, remote support can be provided through phone, and video conferencing on hand held phones, which can enable immediate investigation and possible resolution issues without the need to wait for service personnel to travel to the site. Therefore, we request that the 50 mile radius requirement be removed from the specifications.

a. Removing the 50 mile radius is acceptable.

3. The Chlorine sensor specified has a temperature limitation of 113°F, which is insufficient for the VHA Directive required 124°F for the hot water distribution piping. Also, the specified analyzer is Amperometric which uses an electrochemical technique to measure changes in current. Electrodes are used to measure small electrical voltage levels. These units are not actually measuring the oxidant levels in the water directly, but instead, provide a “calculated” chlorine or oxidant levels. Direct Chlorine measurement is not possible with this type of analyzer. In addition to not reading actual oxidant levels, the sensors can be interfered with when being used for continuous on-line process measurements. Some of the interferences include pH, temperature, flow rate, and pressure. Sensors can also become fouled which causes interference when attempting to calibrate. These sensors also require constant calibration (2-3 times per week).

We request that the specification be changed to a Chlorine Analyzer that uses an EPA-approved DPD colorimetric method (SM4500G) to measure the level of oxidant. It is not a “calculated value based on electrical currents.” Because the DPD colorimetric method is an EPA-approved method for reading oxidant levels, limitations like calibration, reagent stability and reaction product stability have all been addressed and this method has been the standard for measuring oxidant levels since 1973. Using an EPA-approved colormetric Chlorine Analyzer will provide you with the most accurate, dependable, and, most importantly, defensible data without constant recalibrations of the system.

a. Specified sensors are available in model ranges that can measure up to 70 C (158 F) degree water temperatures.

b. Alternate Solution: Provide Oxidation-Reduction Potential sensors for the chlorine.

4. Phigenics manufactures a Potable Water Analytics System that was specifically designed to meet the VHA Directive 1061 continuous monitoring requirements. This equipment can meet the performance specifications required by this project and includes a chlorine analyzer that uses the EPA-approved DPD colorimetric method to measure the level of oxidant. A brochure for this equipment is included for your review. Will you approve this system for the continuous water quality monitoring systems?

a. Products shall meet specifications. If the Phigenics Potable Water Analytic System meets the requirements of the specification it will be allowed. No product data has been provided to determine inf the product is acceptable. Specifications are performance based, not product based.

5. The requirements to connect the data logging to the internal BMS seem complicated and will require continued coordination and could be a huge expense. Several VA facilities currently use on-line data management to manage their continuous water monitoring equipment. This eliminates the requirement for computers, communications equipment, etc. Would you allow an on-line data management system to collect, store, and report the data collected by the continuous water monitoring equipment?

a. No. Water quality monitoring shall be connected to the existing BMS per the specifications and drawings.

ATTACHMENT:

See attached document: S04 679-15-101 Legionella B61 Pre-Bid Site Visit Sign-in Sheet.