Sol_140R2020Q0114_Amd_0004.pdf

(x)

140R2020Q0114 x x

1 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 ACKNOWLEDGEMENT TO BE

RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY 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 reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

x

Sacramento CA 95825-1898 2800 Cottage Way, Room E-1815

R20

Division of Acquisition Services Regional Office Mid-Pacific Region Bureau of Reclamation

11/19/20200004

13. THIS ITEM ONLY APPLIES TO MODIFICATION OF CONTRACTS/ORDERS. IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

12. ACCOUNTING AND APPROPRIATION DATA (If required) is not extended.is extended, Items 8 and 15, and returning

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: (a) By completing

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

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

FACILITY CODE CODE

10B. DATED (SEE ITEM 13)

10A. MODIFICATION OF CONTRACT/ORDER NO.

9B. DATED (SEE ITEM 11)

9A. AMENDMENT OF SOLICITATION NO.

CODE

8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, State and ZIP Code)

7. ADMINISTERED BY (If other than Item 6)CODE 6. ISSUED BY

PAGE OF PAGES

4. REQUISITION/PURCHASE REQ. NO.3. EFFECTIVE DATE2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO. (If applicable)

1. CONTRACT ID CODE

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

11/16/2020

CHECK ONE A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE CONTRACT

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority) appropriation data, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(b).

E. IMPORTANT: Contractor is not is required to sign this document and return __________________ copies to the issuing office.

ORDER NO. IN ITEM 10A.

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

A. The purpose of this amendment is to incorporate the questions received below regarding this solicitation:

1) Assume 5 new well installations per year.

To what depths should we assume well installation? Within Appendix H of the SMP, typical existing well depths range from 25th and 75th quartile are 3.4 and 9.7 ft bgs. Yet the hydraulic testing subtask assumes 20 foot boreholes. Well depths up to eight feet can typically be installed via hand augering; deeper depths may require a drill rig which greatly increases the costs, consequently an assumed well depth would be helpful to estimate costs.

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16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)15A. NAME AND TITLE OF SIGNER (Type or print)

15C. DATE SIGNED 16B. UNITED STATES OF AMERICA 15B. CONTRACTOR/OFFEROR 16C. DATE SIGNED

(Signature of person authorized to sign) (Signature of Contracting Officer)

Dean Seggay

STANDARD FORM 30 (REV. 11/2016)

Prescribed by GSA FAR (48 CFR) 53.243

Previous edition unusable

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

ITEM NO. SUPPLIES/SERVICES QUANTITY UNIT UNIT PRICE AMOUNT

NAME OF OFFEROR OR CONTRACTOR

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140R2020Q0114/0004

-Appendix H refers to shallow groundwater monitoring well thresholds and not well depth.

Please refer to Appendix E for more information on the monitoring network, which describes that wells can range anywhere from 15 to 80 feet. The mean and mode monitoring well depth for the network installed by Reclamation is 30 feet.

It is understood that the 5 new wells will be installed with pressure, elevation, temperature and EC sensors connected to a telemetered datalogger. What existing telemetered data systems are in use in the 8 real-time monitored wells? The introduction of different sensor types and data acquisition systems may result in additional downloading/data processing time and telemetry/cellular charges, consequently it is important to know what sensor types Reclamation uses in order to assess trade-offs between time and instrument costs.

-Reclamation currently has deployed a variety of loggers throughout the monitoring network but future monitoring should not be limited to current practices. Examples of loggers currently installed include: In-Situ LevelTroll 500, Solinst Levelogger F30, YSI 600LS; the real-time monitored wells use YSI brand equipment.

2) Assume 5 hand auger monitoring locations and/or temporary wellpoints installed per year.

Are these temporary well points different than the new wells and to what depths should they be drilled? Are dataloggers to be installed in these wells? Will these wells require abandonment in addition to the other 5 wells specified for abandonment?

-Yes, these are different than the wells to be installed as part of the shallow groundwater monitoring network. They are typically hand auguered to depths of approximately 7-9 feet.

They may be outfitted with a datalogger or will require manual measurements. These temporary well points should not require the same level of abandonment as the monitoring wells constructed for shallow groundwater monitoring but will need to be properly remediated after use.

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NSN 7540-01-152-8067 OPTIONAL FORM 336 (4-86)

Sponsored by GSA

FAR (48 CFR) 53.110

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140R2020Q0114/0004

3) Quarterly staff gage readings at 20 locations in Reaches 1 through 5 and the bypasses. Once a year, these readings will incorporate a flow measurement.

During what time of year, or below what stage should we assume these flow measurements to be taken? Based on our review, many of the surface water flow transects can be gauged at low water using wading methods; at higher stages (i.e.

between Dec-Mar) a boat will be required.

Understanding what stage Reclamation requires measurement will help us budget this task.

-Expect that flow measurements would be likely to occur during higher flows in the spring.

4) Purchase and installation of 30 additional hourly capable dataloggers in Year 1; Purchase and installation of 15 additional hourly capable dataloggers in Years 2 and 3.

Are the parameters to be measured with these dataloggers include EC (similar to the requirement for the new wells), and what are the current datalogger type that Reclamation is using? The price difference between a sensor that only monitors pressure and temperature and a transducer that also measures EC is typically a

$1000. In addition, the introduction of different sensor types and data acquisition systems may result in increased data download and processing time.

-Please refer to further description of dataloggers provided above. Any new dataloggers should have similar capabilities.

5) The total number of wells within the program is unclear. The solicitation refers to 80 primary and 120 secondary wells; the Well Atlas figures indicate 257 wells, other groundwater monitoring data available on the SJRRP website indicates over 300 wells.

Are the 120 monthly manually monitored wells a subset of the 200 wells monitored quarterly, or are there 320 wells (200 quarterly and 120 monthly) to be monitored? Do the 200 wells all have dataloggers?

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140R2020Q0114/0004

-Yes, the 120 monthly manually monitored wells are a subset of the 200 wells monitored quarterly. No, not all 200 wells have dataloggers.

6) Ground surveys of all measurement sites to identify topography of the surrounding lands and cross section profile

We understand from Amendment 3 that this is in reference only to new well sites. What are the expected measurement lengths of the cross-section

(i.e. if to the SJR, how far should we assume from the river). We assume that Reclamation collects LIDAR data on the SJR on a regular basis, as an alternative, can we assume that the well elevation data can placed on existing topography data to develop transect profiles?

-Cross-section information is generally needed from the river to the wells. The distance of the wells from the rivers varies. The average monitoring location distance from the centerline of the river is 1,750 feet for Reclamation installed equipment. Reclamation does not collect

LiDAR data on a regular interval, but there is

LiDAR data available. Reclamation does however conduct regular subsidence monitoring in the

Restoration Area. Well elevation data and existing topography data can be utilized with various software for any necessary interpolation and analysis.

B. All other terms and conditions of the solicitation remain the same.

C. Contractors shall follow the instructions in block 11 of this form.

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