Attachment_A_-_Technical_Specifications.pdf

285‐19‐RFQ‐0005 Tuscarora Water Well Testing & Disinfecting

ATTACHMENT A: Technical Specifications

STATEMENT OF WORK

NS14-D41 Individual Well Follow-Up Testing

To provide well testing and resulting disinfection of well systems on the Tuscarora Nation Reservation. The Tuscarora Nation is located 10 miles northeast of Niagara Falls. The Nation's wells have historically faced contamination issues, including contamination from inadequate waste disposal systems. Several Nation residents have expressed interest in getting their individual well systems tested for contaminants.

Based on the background, the statement of work is to provide sampling of wells. The wells will then be disinfected. A final bacteriological sampling of each disinfected well will conclude the work. Location of each well site is to be determined by IHS. Wells will be sampled for all parameters listed in the specifications.

SPECIFICATION - INDIVIDUAL WELL TESTING AND DISINFECTION

PART 1- GENERAL

1.01 SUMMARY

A. General and Performance Requirements B. Well disinfection and water analysis

1.02 REFERENCES

A. AWWA AlOO - Standards for Water Wells.

B. AWWA B301- Standards for Liquid Chlorine.

C. NY State Department of Health, Part 5, Subpart 5-1: Public Water Systems

1.03 SUBMITIALS

A. Method of Disinfection B. Certified Water Testing Laboratory

1.04 STATE WELL CODES

A. Testing for water wells shall be in compliance with NYS DOH Drinking Water Regulations, Part 5, Appendix 5-C "Acceptable Methods for the Analysis of Contaminants in Drinking Water".

1.05 ACCEPTANCE

A. Work covered by this section will not be accepted until the well testing and disinfection has been completed and reported to IHS and the Homeowner.

PART 2 - PRODUCTS

2.01 CHLORINE DISINFECTANT

A. Chlorine solution shall be NSF approved for the purpose of disinfecting residential water systems.

PART 3- EXECUTION

3.01 WELL SAMPLING

A. Samples shall be drawn and tested per State regulations.

B. Parameters to be analyzed:

1. Total Hardness

2. Fluoride

3. Sodium

4. pH

5. Nitrates

6. Nitrites

7. Alkalinity

8. Iron

9. Manganese

10. Total Dissolved Solids

11. Chlorides

12. Sulfates

13. Aluminum

14. Lead

15. Barium

16. Strontium

17. VOCs

C. Submit chemical analysis results to Project Engineer immediately upon receipt of results.

3.02 DISINFECTION

A. Upon completion of testing, thoroughly clean the well of all foreign material (i.e.

cement, oil, grease, joint dope, scum, etc.)

B. Disinfect well, pumping equipment and building plumbing with a chlorine solution

1. Prepare solution prior to injection into well.

2. Mix volume and strength such that a minimum concentration of 100 ppm of free residual chlorine is obtained in all parts of the well for a minimum of 2 hours after injection.

3. Flush casing above static water level with solution.

4. Discharge chlorinated water away from well and not into home plumbing.

3.03 BACTERIOLOGICAL ANALYSIS

A. Take bacteriological samples after disinfection and flushing of well.

B. Submit samples to State Department of Health or Indian Health Service approved lab.

1. Provide copy of results within 1 day of receipt of the report.

2. If a sample tests positive, notify Project Engineer immediately.

3. Conform to sampling and preservation requirements of laboratory.

4. Parameters to be analyzed:

1. TOTALCOLIFORMS

2. E-COLI (if positive for coliforms)

3.04 MEASUREMENT AND PAYMENT

A. Water Testing

1. Measurement: Unit Basis, per each well tested.

2. Basis of Payment: Per well tested at the Contract Unit Price for sampling of well and water system based on delivered and approved results of testing.

Testing shall be performed per above specification, or as directed by Project Engineer. Compensation shall include all equipment, materials, and all other necessary items for complete, delivered and approved test results. No additional compensation shall be made for repeat testing due to positive bacteriological results.

B. Well Disinfection

1. Measurement: Unit Basis, per each well disinfected.

2. Basis of Payment: Per well disinfected at the Contract Price for disinfection of well and water system. Includes all labor, materials, tools, and equipment necessary to complete this work including chlorination equipment and materials, and any other equipment and work necessary to perform task.

END OF SECTION