1143376 Performance Work Statement.pdf

US Department of Agriculture (USDA)

Performance Work Statement Pre-Solicitation #1143376

South Fork Well Replacement Rio Grande National Forest (Colorado)

Project Name South Fork Well Replacement

General Information

1.0 Scope of Work

The Rio Grande National Forest is seeking a Contractor to drill and develop a new potable water well, perform all necessary water quality analysis for use as a Public Water System, install an existing submersible pump and installation of a new pump control panel and all wiring and appurtenances. The Government shall provide a trench, waterlines, and power to the new well once the well has been successfully developed. The Contractor shall connect the new waterlines to the existing water lines and the new wellhead. The purpose of the main contract items is to ensure the current private water system remains supplied with potable water and that the system can continue to adhere to the regulations and requirements of a Public Water System.

Optional items will include provisions for well construction and development beyond the depth estimated and a new submersible pump should the existing pump be inadequate for use in the newly constructed well.

2.0 Background

In the town of South Fork, Colorado the Rio Grande National Forest operates a private water system consisting of a bunkhouse and ancillary dwelling with an existing well that supplies the ancillary dwelling with water, which contains the current water supply pressure tank, and then supplies the bunkhouse with water. The current well is 120 feet deep and is located as specified on Form GWS-44. The well replacement permit stipulates a maximum pumping rate of 15 gallons per minute and has an annual yield of 3 acre-feet from an unconfined aquifer (Type II).

2.1 Period of Performance

The period of performance (PoP) for this project is 60 Days After the Notice to Proceed.

NOTE: Once the contract has been awarded, a post-award conference must be scheduled and held within ten days. After the conference is completed, a Notice to Proceed (NTP) will be issued which begins the 60 day period of performance.

Contractor Requirements

3.0 Technical Requirements / Tasks

BID ITEMS

1. BID ITEM 001 Well Construction and Development

1.1 The Contractor shall provide all materials, labor, equipment, tools, transportation, permits, licenses, supervision, expertise, and other incidentals necessary to successfully construct a new functioning potable water supply well in accordance with all the rules described in the Colorado Code of Regulations (CCR) - Colorado Division of Water Resources - Well Construction Rules 2 CCR-402-2 (NOTE: The Contractor shall adhere to all the rules described in these regulations whether mentioned specifically or not.)

1.2 The newly constructed well shall be constructed to according to 2 CCR-402-2 Rule 10 Minimum Construction Standards for Water Wells. The well shall conform to 2 CCR-402-2 Rule 10 Section

10.4.6 for Wells Constructed into a Type 2 Aquifer as stated on the Well Permit Application. It shall be of the pitless adapter Type, and the casing shall extend a minimum of 18 inches above ground level. The newly constructed wellhead and casing shall be protected by a hinged steel enclosure (i.e.

stick-up or monument) capable of being locked with a standard government padlock and allows for maintenance of the well and wellhead components.

1.3 The Contractor shall install and construct the well in accordance with the specifications, drawings, and applicable manufacturer’s recommendations.

1.4 The Contractor shall salvage the existing submersible pump from the existing well to be used in the newly constructed well. The Contractor shall furnish and install all necessary piping, check valves, and wiring for the existing submersible pump to function in the newly constructed well.

1.5 The newly constructed well shall have a yield of 15 gallons-per-minute and an annual yield of 3 acre-feet.

1.6 The Government has estimated the new well to be 150 feet in depth for bidding purposes. The Bid quantity shall be in linear feet and include all necessary casing material, grouting material and wiring required to reach well development depth. The Contractor shall provide pricing per linear foot. This pricing shall also be used for Option Item 1001 Additional Well Construction Depth, to ensure well development if additional construction beyond 15% of the specified depth is required. (FAR 52.211- 18 Variation in Estimated Quantity)

1.7 The Contractor shall develop the well and install the casing and all necessary grouting in a timely manner to avoid the possibility of a borehole collapse.

1.8 The Contractor shall install all materials and appurtenances in accordance with the manufacturer's specifications and recommendations. The Contractor shall submit specifications of the well casing, capping, vent, enclosure, and grouting materials prior to the construction and development of the well.

1.9 The Contractor shall perform disinfection procedures according to 2 CCR-402-2 Rule 15 Minimum Disinfection Standards.

1.10 The Contractor shall install the well at no more than 200 feet from the location specified in the well replacement permit: 37°38'15.4"N 106°39'36.7"W. The Contractor shall coordinate with COR on the specific placement of the well within the 200 foot radius.

1.11 The Contractor shall conduct testing according to 2 CCR-402-2 Rule 12 Well Testing and submit a Well Construction and Yield Estimate Report (GWS-31) to the Colorado Division of Water Resources to verify well construction.

1.12 The Contractor shall be responsible for the remediation of any failed wells that do not meet the requirements described in the specifications of this contract.

1.13 The Contractor shall utilize the Government supplied water lines and power conduit to complete the connections between the newly constructed well and the existing water supply pressure tank water lines. The Contractor shall furnish and install the necessary additional power conduit, water lines, and equipment to complete this task.

2. BID ITEM 002 Water Quality Analysis and Testing

1.1 The Contractor shall perform National Primary and Secondary Contaminants and laboratory analysis of water quality per EPA, Safe Drinking Water Act, and the Colorado Code of Regulations – 5 CCR 1002-11 Colorado Primary Drinking Water Regulations.

1.2 The Contractor shall perform all the necessary tests and documentation to bring the newly constructed well into compliance consistent with a Public Water System (PWS) (but shall remain classified as a private water system) as outlined in the Colorado Code of Regulations.

1.3 The Contractor shall submit the results of the water quality analysis tests to the Government and all applicable Colorado State Water Authorities in a timely manner once results are received.

3. BID ITEM 003 Submersible Pump Controller Unit and Wiring

1.1 The Contractor shall provide all materials and expertise to install a new submersible pump control panel in the ancillary bunkhouse building containing the current water pressure supply tank and all necessary wiring, conduit, switches, grounding, and trenching to function properly.

1.2 The Contractor shall submit the pump control panel model, manufacturer’s specifications, documentation, and manuals prior to the installation of the pump control panel.

1.3 The Contractor shall ensure compatibility with the existing submersible pump and a new submersible pump model of equivalent specifications.

OPTIONAL BID ITEMS

The Government shall not guarantee the award of these optional bid items.

1. OPTION ITEM 1001 Additional Well Construction Depth

1.1 If the Contractor cannot develop or construct a well with a viable water source at or near the specified 150 feet in depth, The Contractor shall bid per-foot depth beyond the 150 feet until a viable water source suitable for development is reached, not to exceed 200 feet total well depth.

1.2 The Contractor shall be responsible for the remediation of the well if a viable water source cannot be located for development up to the 200 feet.

2. OPTION ITEM 1002 New Submersible Pump

2.1 The Contractor shall furnish and install a submersible pump and all associated pump wiring, fittings, conduit, and control panel to transmit water from the new well source to the water supply pressure tank.

2.2 Pump appurtenances, wiring, conduit, and their quantities shall be considered incidental to this bid item.

2.3 The Contractor shall field verify quantities of wiring, conduit, and quantities of materials prior to installation of the pump and related appurtenances.

2.4 The submersible pump shall be capable of producing the maximum flow rate of 15 gallons per minute.

2.5 The Contractor shall submit the proposed pump model, manufacturer’s specifications, documentation, and manuals prior to the installation of the pump.

4.0 Government Furnished

1. The Government shall supply a trench containing water distribution lines and power lines and conduit from the newly constructed well to the tie-in-point for the existing water supply pressure tank lines.

The Contractor shall complete the connection of the water lines and power lines.

2. The Government shall complete the abandonment of the existing well according to Colorado Division of Water Resources 2 CCR 402-2 Rule 16 – Standards for Plugging, Sealing, and Abandoning Wells and Boreholes and complete the Well Abandonment Report and submit to the Colorado Division of Water Resources.

5.0 Deliverables / Schedule

Key Deliverables Item No.

Deliverable / Item Title

Description Delivery Format

Due By

0001 Project Schedule/Timeline

Timeline describing the approximate timeline of each task (mobilization, well construction, well development, water testing, e.g.)

Via email to

COR

10 days Before start of project and mobilization.

0002 Well Construction – Well Construction Material List

Manufacturer’s model numbers, specifications, and/or manuals for the proposed materials to construct a pitless adapted well including but not limited to:

• Casing Material

• Grouting Material

• Cap Component Types

• Cap Vent Component Types

• Pitless Adapter Components

• Conduit Type

• Wiring Type

• Check Valve Types

• Protective enclosure

Via email to

COR

Due 15 days before Project Start and Mobilization

0003 Submersible Pump Controller Unit Documentation (includes wiring and conduit)

Manufacturer’s Warranty

Model number, specifications, and manual for the submersible pump controller unit and all related wiring and conduit.

Manufacturer’s standard warranty.

Via Email to

COR

Due 10 days before Project Start and Mobilization

0004 Well Construction Yield Estimate Report

GWS-44 Yield Estimate Report Copied to the COR Via email (or hardcopy)

Due within 5 days of being sent to the Colorado Division of Water Resources

0005 Water Quality Analysis Report

Report detailing the results of the water quality testing as required by the Colorado Code of Regulations and Safe Drinking Water Act

Via Email to the COR

Due within 5 days of being sent to the Colorado Department of Public Health

1002 New Submersible Pump Documentation and Material List

Manufacturer’s model number, specifications, and manual for the proposed submersible pump. The pump shall provide the necessary 15 gallons-per-minute yield.

Via Email to the COR

Due 15 days before project start and mobilization and after option item award

6.0 Travel

The project location is located within the town of South Fork, Colorado.

7.0 Contractor’s Key Personnel

• Foreman(s) – Contractor shall provide a foreman or foremen with all the necessary expertise to oversee and complete the project.

8.0 Attachments for Reference

The following are included as attachments to this PDF

• Form GWS - 44 - Rio Grande National Forest - Copy of New Water Well Permit Application

• Form GWS - 44 - Rio Grande National Forest - Copy of Original Water Well Permit Application

• Colorado Code of Regulations – Well Construction Rules 2 CCR-402-2

• Colorado Code of Regulations – 5 CCR 1002-11 Colorado Primary Drinking Water Regulations

• Site Map – Showing Location of Well Permit Location

• Site Map #2 - Showing approximate location of water distribution lines

DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT

Water Quality Control Commission

REGULATION NO. 11 - COLORADO PRIMARY DRINKING WATER REGULATIONS

5 CCR 1002-11

[Editor's Notes follow the text of the rules at the end of this CCR Document.]

11.1 AUTHORITY AND PURPOSE

11.1(1) Authority

The Water Quality Control Commission has promulgated the Colorado Primary Drinking Water Regulations pursuant to sections 24-4-104, 24-4-105, 25-1.5-101, 25-1.5 Part 2, 25-1-109, 25-1-114, 25- 1-114.1, and 25-8-202, Colorado Revised Statutes.

11.1(2) Purpose

The purpose of the Colorado Primary Drinking Water Regulations is to assure the safety of public drinking water supplies and to enable the state of Colorado to assume responsibility for enforcing the standards established by the federal Safe Drinking Water Act (i.e., Public Law 93-523), as amended.

11.1(3) RESERVED

11.1(4) Severability Clause

The provisions of these regulations are severable. If any regulation, rule, section, paragraph, or other portion of the Colorado Primary Drinking Water Regulations is, for any reason, held inoperative, unconstitutional, void or invalid, the validity of the remaining portions shall not be affected.

11.1(5) Applicability

(a) The Colorado Primary Drinking Water Regulations apply to each public water system, unless the public water system meets all of the following conditions:

(i) Consists only of distribution facilities and/or storage facilities.

(ii) Does not have any collection facilities.

(iii) Does not have any treatment facilities.

(iv) Obtains all of its water from a public water system to which these regulations apply.

(v) Is not owned or operated by a public water system to which these regulations apply.

(vi) Does not sell water to any person.

(vii) Is not a carrier which conveys passengers in interstate commerce.

Code of Colorado Regulations Secretary of State State of Colorado

CODE OF COLORADO REGULATIONS 5 CCR 1002-11

(b) The Department, regardless of any other provisions of the Colorado Primary Drinking Water Regulations, must enforce the Colorado Primary Drinking Water Regulations against federal facilities, on federally owned lands within the State, excluding Native American Lands.

11.1(6) General Authorities

(a) Testing and Monitoring Requirements

(i) To demonstrate compliance with the Colorado Primary Drinking Water Regulations or terms and conditions of enforcement orders, the Department may require the supplier to conduct tests and monitoring as the Department determines is necessary to protect public health.

(A) These tests must be conducted using methods approved by the Department.

(ii) The Department may require the supplier to install, maintain, and use instrumentation to monitor and record data.

(A) The supplier must submit periodic reports on a continuing basis to demonstrate compliance with applicable regulations.

(b) Entry and Inspection of Public Water Systems

(i) Upon presentation of proper credentials, authorized representatives of the Department may enter and inspect, at any reasonable time and in a reasonable manner, any establishment, facility, or any other property, premises, or place owned, operated or under the control of a public water system or other person for the purpose of investigating any actual, suspected, or potential violations of any minimum general sanitary standards required by section 25-1.5-202, Colorado Revised Statutes.

(ii) During entry, authorized representatives may collect drinking water samples.

(A) Any sample collected may be used as evidence in an enforcement action.

(B) A split or duplicate sample shall be offered to the supplier.

(C) The supplier shall be promptly provided a copy of the sample results.

(iii) If entry or inspection is denied or not consented to by the supplier, the Department has the authority to obtain a warrant to enter and inspect said property, premises, or place and shall obtain the warrant from the district or county court for the judicial district or county in which the property, premises, or place is located.

(A) The district and county courts of the state have the authority to issue a warrant if the Department shows the need for the entry and inspection.

(B) A copy of the inspection report(s) must be provided to the court within a reasonable time after the inspection.

(c) Enforcement Authority

(i) If the supplier violates any provision of the Colorado Primary Drinking Water Regulations, the Department may issue an enforcement order requiring the supplier to take actions necessary to correct the violation(s). The Department may issue an enforcement order:

(A) Upon finding significant deviation from plans and specifications or significant inaccuracies in data submitted to the Department which the Department used as the basis for approval of proposed construction or modifications to a public water system;

(B) Due to the incidence of disease, the source of which is reasonably identified by the Department as originating from the consumption of drinking water from a public water system;

(C) Upon determining that contaminants are present in a public water supply and that the presence of these contaminants presents an unreasonable risk to public health; or

(D) Upon determining that a physical condition or an operation or maintenance practice poses an unreasonable risk to public health.

(ii) An enforcement order may require the supplier to:

(A) Design, redesign, install, modify, construct or reconstruct facilities, which may include sources and treatment;

(B) Use treatment techniques;

(C) Acquire an alternative source;

(D) Take other corrective action(s); or

(E) Demonstrate the adequacy of control measures and use operational techniques and practices that will eliminate any violations.

(iii) A supplier that violates the Colorado Primary Drinking Water Regulations or an enforcement order(s) may be subject to civil or criminal actions pursuant to the provisions of sections 25-1-114 and 25-1-114.1, Colorado Revised Statutes.

(iv) The supplier may request a hearing to contest an enforcement order.

(A) Requests for a hearing must:

(I) Be filed in writing with the Department no later than 30 days after service of the enforcement order;

(II) State the grounds on which the enforcement order is contested; and

(III) State the amount of time the supplier estimates will be required for the hearing.

(B) The hearing regarding the enforcement order shall be held in accordance with applicable provisions of Article 4 of Title 24, Colorado Revised Statutes.

11.2 GENERAL REQUIREMENTS

11.2(1) Tampering

(a) “TAMPER” means to introduce a contaminant into a public water system or into drinking water or to otherwise interfere with drinking water or the operation of a public water system with the intention of harming people or public water systems. It does not include the standard accepted treatment procedures performed by the supplier in preparing water for human consumption.

(b) The supplier must notify the Department as soon as possible but no later than 10 a.m. of the next calendar day after any tampering, suspected tampering, or receipt of a tampering threat.

(c) The supplier must submit written notification to the Department no later than five calendar days after any tampering, suspected tampering, or receipt of a tampering threat explaining the circumstances of the occurrence and identifying the action(s) taken to ensure the ability of the supplier to provide a safe and reliable supply of drinking water and to prevent any reoccurrence.

11.2(2) Identification of Construction Materials

(a) For community water systems, the supplier must identify whether any of the following construction materials are present in the distribution system and report to the Department the existence of:

(i) Lead from piping, solder, caulking, interior lining of distribution mains, alloys, and home plumbing.

(ii) Copper from piping, alloys, service lines, and home plumbing.

(iii) Galvanized piping, service lines, and home plumbing.

(iv) Ferrous piping materials such as cast iron and steel.

(v) Asbestos cement pipe.

(b) For community water systems, the Department may require the supplier to identify and report the presence of other construction materials in the distribution system that may contribute contaminants to the drinking water (e.g., vinyl-lined asbestos cement pipe or coal tar-lined pipes and tanks).

11.2(3) Prohibition on the Use of Lead Pipes, Solder, and Flux

Any pipe, solder, or flux, which is used after June 19, 1986 in the installation or repair of any public water system, or any plumbing in residential or non-residential buildings providing water for human consumption that is connected to a public water system, must be lead free.

(a) This prohibition does not apply to leaded joints necessary for the repair of cast iron pipes.

11.2(4) Violations and Response for Monitoring and Sampling

(a) If the supplier fails to comply with any monitoring or sampling requirement of the Colorado Primary Drinking Water Regulations a monitoring violation occurs.

(b) In the event of a monitoring or sampling violation, the supplier must:

(i) Report the violation to the Department no later than 48 hours after the violation occurs.

(ii) Distribute Tier 3 public notice as specified in 11.33, unless otherwise specified.

11.2(5) Guidance Documents and Policy Documents

(a) The Department has developed guidance documents designed to assist suppliers with understanding the regulations and to explain the specific requirements the supplier must meet to maintain compliance.

(b) The Department has developed a number of internal policy documents designed to address special primacy requirements, which are defined in 40 CFR 142, in order to maintain primary enforcement responsibility in the state of Colorado, and therefore are not included in these regulations.

(c) While not regulatory in nature, these policies and guidance are public record and copies of the available guidance and policy documents may be obtained by requesting them from the Department at:

Colorado Department of Public Health and Environment Water Quality Control Division 4300 Cherry Creek Drive South Denver, Colorado 80246-1530

(303) 692-3500

These documents may also be available on the Department's Internet website at the following address: www.colorado.gov/cdphe.

11.2(6) Materials Incorporated by Reference

(a) Date of Incorporation

(i) Throughout these regulations, requirements promulgated by the U.S. Environmental Protection Agency have been adopted and incorporated by reference. The federal references cited herein include only those versions that were in effect as of April 9, 2018, and not later amendments to the incorporated material.

(ii) All other materials incorporated by reference in the Colorado Primary Drinking Water Regulations include only those versions cited and not later amendments to incorporated material.

(b) Location of Materials Incorporated by Reference

(i) The requirements promulgated by the U.S. Environmental Protection Agency incorporated by reference are available at no cost in the online edition of the Code of Federal Regulations (CFR) hosted by the United States Government Printing Office, online at www.govinfo.gov.

(ii) All other materials incorporated by reference may be examined at any state publications depository library, the Laboratory Services Division of the Department, or the Department at:

Colorado Department of Public Health and Environment Water Quality Control Division 4300 Cherry Creek Drive South Denver, Colorado 80246-1530

(303) 692-3500

(c) If the material incorporated by reference refers to other sections of the referenced document that conflict with current language of the Colorado Primary Drinking Water Regulations, the current language of the Colorado Primary Drinking Water Regulations takes precedence.

11.3 DEFINITIONS, ACRONYMS AND ABBREVIATIONS

Definitions of general applicability to the Colorado Primary Drinking Water Regulations are as specified here and shall be liberally construed to protect public health and the quality of drinking water supplied to the public. Additional definitions are specified throughout the Colorado Primary Drinking Water Regulations and are applicable to the rule in which they are defined. As used in the Colorado Primary Drinking Water Regulations:

(1) “4-LOG TREATMENT OF VIRUSES” means 99.99 percent inactivation and/or removal of viruses.

(2) “ACT” means the federal Public Health Service Act, as amended by the Safe Drinking Water Act, Public Law 93-523.

(3) “AVERAGE RESIDENCE TIME” means a point in the distribution system where treated water has been in the system for approximately half of its longest or maximum time in the system, as measured by water transport time. Sample locations between 25 and 75 percent of the maximum are considered to be representative of average residence time, provided that in total, the average of the selected locations approximate 50 percent of the maximum residence time and take into account population densities and their locations.

(4) “BACKFLOW CONTAMINATION EVENT” means backflow into a public water system from an uncontrolled cross connection such that the water quality no longer meets the Colorado Primary Drinking Water Regulations or presents an immediate health and/or safety risk to the public.

(5) “BAG FILTERS” means pressure–driven separation devices that remove particulate matter larger than 1 micrometer using an engineered porous filtration media. They are typically constructed of a non-rigid, fabric filtration media housed in a pressure vessel in which the direction of flow is from the inside of the bag to the outside.

(6) “BEST AVAILABLE TECHNOLOGY” or “BAT” means the best technology, treatment techniques, or other means that the EPA Administrator finds available, considering cost and after examination for efficacy under field conditions and not solely under laboratory conditions.

(7) “CARTRIDGE FILTERS” means pressure-driven separation devices that remove particulate matter larger than 1 micrometer using an engineered porous filtration media. They are typically constructed as rigid or semi-rigid, self-supporting filter elements housed in pressure vessels in which flow is from the outside of the cartridge to the inside.

(8) “CERTIFIED LABORATORY” means a laboratory certified by the State of Colorado for analysis of drinking water.

(9) “COAGULATION” means a process using coagulant chemicals and mixing by which colloidal and suspended materials are destabilized and agglomerated into flocs.

(10) “COMBINED DISTRIBUTION SYSTEM” means an interconnected distribution system consisting of the distribution systems of wholesale systems and of the consecutive systems that receive finished water.

(11) “COMMUNITY WATER SYSTEM” means a public water system that supplies at least 15 service connections used by year-round residents or that regularly supplies at least 25 year-round residents.

(12) “COMPLIANCE CYCLE” means the nine-year calendar year cycle during which the supplier must monitor. Each compliance cycle consists of three three-year compliance periods.

(13) “COMPLIANCE PERIOD” means a three-year calendar year period within a compliance cycle.

(14) “CONSECUTIVE SYSTEM” means a public water system that receives some or all of its finished water from one or more wholesale systems. Delivery may be through a direct connection or through the distribution system of one or more consecutive systems.

(15) “CONSTRUCTION” means the erection, building, modification, reconstruction, improvement or expansion of waterworks.

(16) “CONTAMINANT” means any physical, chemical, biological, or radiological substance or matter in water.

(17) “CONSUMER” means any person that has the opportunity to consume finished water from a public water system.

(18) “CONVENTIONAL FILTRATION TREATMENT” means a series of processes including coagulation, flocculation, sedimentation (or equivalent form of clarification), and granular media filtration resulting in substantial particulate removal.

(19) “CROSS CONNECTION” means any connection that could allow any water, fluid, or gas such that the water quality could present an unacceptable health and/or safety risk to the public, to flow from any pipe, plumbing fixture, or a customer’s water system into a public water system’s distribution system or any other part of the public water system through backflow.

(20) “CT” or “CTcalc” means the product of residual disinfectant concentration (C) in mg/L determined before or at the first customer, and the corresponding disinfectant contact time (T) in minutes (i.e., C x T).

(21) “CUSTOMER” means billing units or service connections that receive finished water.

(22) “DEPARTMENT” means the Colorado Department of Public Health and Environment as created by section 25-1-102(1), Colorado Revised Statutes.

(23) “DIATOMACEOUS EARTH FILTRATION” means a process resulting in substantial particulate removal in which (1) a precoat cake of diatomaceous earth filter media is deposited on a support membrane (septum), and (2) while the water is filtered by passing through the cake on the septum, additional filter media known as body feed is continuously added to the feed water to maintain the permeability of the filter cake.

(24) “DIRECT FILTRATION” means a series of processes including coagulation and filtration but excluding sedimentation resulting in substantial particulate removal.

(25) “DISINFECTANT” means any oxidant, including but not limited to chlorine, chlorine dioxide, chloramines, ozone, and ultraviolet light, added to water in any part of the treatment or distribution process that is intended to kill or inactivate pathogenic microorganisms.

(26) “DISINFECTANT CONTACT TIME” means the time in minutes that it takes for water to move from the point of disinfectant application, or the previous point of disinfectant residual measurement, to a point before or at the point where residual disinfectant concentration (C) is measured.

(27) “DISINFECTION” means a process that inactivates pathogenic microorganisms in water by chemical oxidants, ultraviolet light, or equivalent agents.

(28) “EMERGENCY SOURCE/CONNECTION” means a water facility that is only used as the result of extreme circumstances, and is otherwise kept offline. These facilities may be either connected or disconnected from a treatment plant/distribution system.

(29) “ENFORCEMENT ORDER” means an order issued for the purpose of notifying the supplier of a public water system that it is in violation of the Colorado Primary Drinking Water Regulations or for the purpose of requiring the supplier of a public water system to cease such violations.

Enforcement orders may prescribe corrective measures necessary to achieve compliance with the Colorado Primary Drinking Water Regulations.

(30) “ENTRY POINT” means a location before or at the first customer which is representative of finished water. The entry point may represent finished water from multiple treatment plants and/or multiple sources.

(31) “FILTRATION” means a process for removing particulate matter from water by passage through porous media.

(32) “FINISHED WATER” means water that is supplied to the distribution system of a public water system and intended for distribution and human consumption without further treatment, including disinfection contact time, except treatment as necessary to maintain water quality in the distribution system (e.g., booster disinfection, addition of corrosion control chemicals).

(33) “FIRST CUSTOMER” means the first potable water service connection that serves finished water.

Typically, the first customer is the water treatment plant’s domestic water system.

(34) “FLOCCULATION” means a process to enhance agglomeration or collection of smaller floc particles into larger, more easily settled particles through gentle stirring by hydraulic or mechanical means.

(35) “GROUNDWATER” means any water under the surface of the ground that is not surface water or groundwater under the direct influence of surface water.

(36) “GROUNDWATER SYSTEM” means a public water system that uses groundwater not under the direct influence of surface water as its sole source of water and does not include public water systems that combine all of their groundwater with surface water or groundwater under the direct influence of surface water before to treatment.

(37) “GROUNDWATER UNDER THE DIRECT INFLUENCE OF SURFACE WATER” or “GWUDI” means any water beneath the surface of the ground with:

(a) Significant occurrence of insects or other macro-organisms, algae, or large-diameter pathogens such as Giardia lamblia or Cryptosporidium; or

(b) Significant and relatively rapid shifts in water characteristics such as turbidity, temperature, conductivity, or pH, which closely correlate to climatological or surface water conditions.

(38) “INACTIVATION” means the use of a disinfectant (e.g., chorine, chloramines, ozone) to interrupt the ability of a pathogen to replicate therefore leaving it unable to infect.

(39) “LEAD FREE” means:

(a) Less than or equal to (≤) 0.2 percent lead when used with respect to solders and flux.

(b) A weighted average of less than or equal to (≤) 0.25 percent lead when used with respect to the wetted surfaces of pipes, pipe fittings, plumbing fittings, and fixtures.

(40) “LEVEL 1 ASSESSMENT” means an evaluation conducted by the supplier to identify sanitary defects, inadequate or inappropriate distribution system coliform sampling practices, and (when possible) the cause(s) that triggered the assessment. Minimum elements must include review and identification of atypical events that could affect distributed water quality or indicate that distributed water quality was impaired, changes in distribution system maintenance and operation, including water storage, that could affect distributed water quality, source and treatment considerations that affect distributed water quality, existing water quality monitoring data, and inadequacies in sample sites, sampling protocol, and sample processing. The supplier must conduct the assessment consistent with any Department-specified directives based on the size and type of the system and the size, type, and characteristics of the distribution system.

(41) “LEVEL 2 ASSESSMENT” means an evaluation conducted by the Department or Department-approved party to identify sanitary defects, inadequate or inappropriate distribution system coliform sampling practices, and (when possible) the cause(s) that triggered the assessment. A Level 2 assessment is a more detailed examination of the system than a Level 1 assessment. A Level 2 assessment involves a comprehensive investigation and review of available information, additional internal and external resources, and other relevant practices. A Level 2 assessment must be completed by the Department or a Department-approved party. Minimum elements must include review and identification of atypical events that could affect distributed water quality or indicate that distributed water quality was impaired, changes in distribution system maintenance and operation, including water storage, that could affect distributed water quality, source and treatment considerations that affect distributed water quality, existing water quality monitoring data, and inadequacies in sample sites, sampling protocol, and sample processing. If required by the Department, the supplier must comply with any expedited schedules or additional actions in the case of an E.coli violation.

(42) “LOCATIONAL RUNNING ANNUAL AVERAGE” or “LRAA” means the average of sample results for samples collected at a particular monitoring location during the most recent four calendar quarters. If the supplier fails to complete four consecutive quarters of sampling, the LRAA is based on the available sample results from the most recent four calendar quarters.

(43) “MAXIMUM CONTAMINANT LEVEL” or “MCL” means the maximum level of a contaminant allowed in drinking water, which is delivered to any consumer.

(44) “MAXIMUM CONTAMINANT LEVEL GOAL” or “MCLG” means the maximum level of a contaminant in drinking water at which no known or anticipated adverse effects on human health would occur, and which allows an adequate margin of safety. Maximum contaminant level goals are non-enforceable health goals.

(45) “MAXIMUM RESIDENCE TIME” means a point in the distribution system where the treated water has been in the system for the longest or maximum time, as measured by water transport time.

Sample locations between 90 and 100 percent of the maximum are considered to be representative of maximum residence time.

(46) “MAXIMUM RESIDUAL DISINFECTANT LEVEL” or “MRDL” means the level of a disinfectant added for water treatment that may not be exceeded at the consumer's tap without an unacceptable possibility of adverse effects on human health.

(47) “MAXIMUM RESIDUAL DISINFECTANT LEVEL GOAL” or “MRDLG” means the maximum level of a disinfectant added for water treatment at which no known or anticipated adverse effect on the human health would occur, and which allows an adequate margin of safety. MRDLGs are non-enforceable health goals and do not reflect the benefit of the addition of the chemical for control of waterborne microbial contaminants.

(48) “MEMBRANE FILTRATION” means a pressure or vacuum driven separation process in which particulate matter larger than 1 micrometer is rejected by an engineered barrier, primarily through a size-exclusion mechanism, and which has a measurable removal efficiency of a target organism that can be verified through the application of a direct integrity test. This definition includes the common membrane technologies of microfiltration, ultrafiltration, nanofiltration, and reverse osmosis.

(49) “NEW SOURCE” means a source not previously used by the public water system or a source not previously approved by the Department.

(50) “NON-COMMUNITY WATER SYSTEM” means a public water system that is not a community water system. A non-community water system is either a “transient, non-community water system” or a “non-transient, non-community water system.”

(51) “NON-TRANSIENT, NON-COMMUNITY WATER SYSTEM” means a public water system that regularly serves a population of at least 25 of the same people for at least six months per year and is not a community water system.

(52) “NON-TRANSIENT POPULATION” means the average number of people served per day during the year or normal operating period(s), who do not reside at the place supplied by the system, but have a regular opportunity to consume water produced by the system. Regular opportunity is defined as four or more hours per day, for four or more days per week, for six or more months per year.

(53) “NOTIFY” means to inform by written, verbal, or other means, unless otherwise stated.

(54) “PERSON” means an individual, corporation, company, association, partnership, municipality, or State, Federal, or tribal agency.

(55) “PLANS AND SPECIFICATIONS” means the technical design drawings and specifications for waterworks. For new waterworks, this also includes technical, financial, and managerial plans.

(56) “PLANT INTAKE” or “INTAKE” means the works or structures at the head of a conduit through which water is diverted from a source (e.g., river or lake) into the treatment plant.

(57) “POINT-OF-ENTRY TREATMENT DEVICE” or “POE” means a treatment device applied to the drinking water entering a house or building for the purpose of reducing contaminants in the drinking water distributed throughout the house or building.

(58) “POPULATION SUPPLIED” means the average daily population that occurs during the busiest month of the year or normal operating period(s). Population supplied is further defined as the sum of resident, non-transient, and transient populations.

(59) “PRESEDIMENTATION” means a preliminary treatment process used to remove gravel, sand and other particulate material from the source water through settling before the water enters the primary clarification and filtration processes in a treatment plant.

(60) “PUBLIC WATER SYSTEM” or “PWS” means a system for the provision to the public of water for human consumption through pipes or other constructed conveyances, if such system has at least fifteen service connections or regularly serves an average of at least 25 individuals daily at least 60 days per year. A public water system is either a community water system or a non-community water system. Such term does not include any special irrigation district. Such term includes:

(a) Any collection, treatment, storage, and distribution facilities under control of the supplier of such system and used primarily in connection with such system.

(b) Any collection or pretreatment storage facilities not under such control, which are used primarily in connection with such system.

(61) “PUBLIC WATER SYSTEM THAT HAULS WATER” means a public water system that delivers, by vehicle, finished water through a non-piped conveyance such as a vehicle mounted tank or container.

(62) “RECYCLE” means the act of returning recycle flows to a plant’s primary treatment process.

(63) “RECYCLE FLOWS” means any water, solid or semi-solid, generated by a plant’s treatment processes, operational processes, and residual treatment processes, that is returned to the plant’s primary treatment process.

(64) “RESIDENT POPULATION” means the average number of people whose primary residence is supplied by the system. The resident does not have to live at the residence for 365 days per year for it to be considered his/her primary residence.

(65) “RESIDUAL DISINFECTANT CONCENTRATION” means the concentration of disinfectant measured in mg/L in a representative sample of water.

(66) “RUNNING ANNUAL AVERAGE or “RAA” means the average of sample results for samples collected during the most recent four calendar quarters. If the supplier fails to complete four consecutive quarters of sampling, the RAA is based on the available sample results from the most recent four calendar quarters.

(67) “SANITARY DEFECT” means a defect:

(i) That could provide a pathway of entry for microbial contamination into the distribution system; or

(ii) That is indicative of a failure or imminent failure in a barrier that is already in place.

(68) “SEASONAL SYSTEM” means a non-community water system that is not operated as a public water system on a year-round basis, regardless of whether the system is pressurized or de-pressurized during the off-season. All seasonal systems must complete Department-approved start-up procedures before supplying water to the public each season.

(69) “SECONDARY MAXIMUM CONTAMINANT LEVELS or “SMCLs” means the maximum level of a contaminant allowed in water which is delivered to the consumer of a public water system. The SMCLs apply to public water systems and which, in the judgment of the EPA Administrator, are requisite to protect the public health. Contaminants added to the water under circumstances controlled by the consumer, except those resulting from corrosion of piping and plumbing caused by water quality, are excluded from this definition. The SMCLs are not enforceable, but are intended as guidelines. The SMCLs are defined in 40 CFR 143.3.

(70) “SEDIMENTATION” means a process for removal of solids before filtration by gravity or separation.

(71) “SERVICE CONNECTION” means a connection to a system that delivers water by constructed conveyance. The definition does not include connections that deliver water by a constructed conveyance other than a pipe if:

(i) The water is used exclusively for purposes other than residential uses (consisting of drinking, bathing, and cooking, or other similar uses);

(ii) The Department determines that an alternative water source to achieve the equivalent level of public health protection provided by the applicable Colorado Primary Drinking Water Regulations is provided for residential or similar uses for drinking and cooking; or

(iii) The Department determines that the water provided for residential or similar uses for drinking, cooking, and bathing is centrally treated or treated at the point of entry by the provider, a pass-through entity, or the user to achieve the equivalent level of protection provided by the applicable Colorado Primary Drinking Water Regulations.

(72) “SIGNIFICANT DEFICIENCY” means any situation, practice, or condition in a public water system with respect to design, operation, maintenance, or administration, that the state determines may result in or have the potential to result in production of finished drinking water that poses an unacceptable risk to health and welfare of the public served by the water system.

Significant deficiencies include, but are not limited to, defects in design, operation, or maintenance, or a failure or malfunction of the sources, treatment, storage, or distribution system that the Department determines to be causing, or have potential for causing, the introduction of contamination into the water delivered to consumers.

(73) “SMALL SYSTEM COMPLIANCE TECHNOLOGY” or “SSCT” means a treatment technology that is affordable (according to the affordability criteria set forth by the EPA) by small systems and allows systems to achieve compliance with the MCL or treatment technique.

(74) “SLOW SAND FILTRATION” means a process involving passage of raw water through a bed of sand at low velocity (generally less than 0.4 meters per hour (m/h)) resulting in substantial particulate removal by physical and biological mechanisms.

(75) “SOURCE” means the point at which a public water system diverts water from its natural or man-made origin.

(76) “SOURCE WATER SAMPLE” means a sample collected before any treatment that represents influent raw source water quality.

(77) “SPECIAL IRRIGATION DISTRICT” means an irrigation district in existence before May 18, 1994 that provides primarily agricultural service through a piped water system with only incidental residential or similar use where the system or the residential or similar users of the system comply with the exclusion provisions outlined in the definition of service connections.

(78) “SPECIAL PURPOSE SAMPLE” means a total coliform sample that is not collected in accordance with 11.16. Special purpose samples include samples that are taken to determine whether disinfection practices are sufficient following pipe placement, replacement, or repair.

Repeat samples collected pursuant to 11.16 are not considered special purpose samples and must be used to determine if the coliform treatment technique trigger has been exceeded. Special purpose samples will not be used to determine compliance with sampling requirements, the E.

coli MCL, or in determining if a treatment technique is triggered.

(79) “SPENT FILTER BACKWASH WATER” means a stream containing particles that are dislodged from filter media when water is forced back through a filter (backwashed) to clean the filter. Spent filter backwash water contains particles including coagulants, metals, and microbes such as Cryptosporidium.

(80) “STATE” means the State of Colorado.

(81) “SUPPLIER OF WATER” or “SUPPLIER” means any person who owns or operates a public water system.

(82) “SURFACE WATER” means any water source that is open to the atmosphere and subject to surface runoff. Groundwater found to be under the direct influence of surface water is classified as surface water.

(83) “SURFACE WATER SYSTEM” means a public water system that uses, in whole or in part, surface water or groundwater under the direct influence of surface water as a source of water.

(84) “TRANSIENT, NON-COMMUNITY WATER SYSTEM” means a non-community water system that serves a population of at least 25 people per day for at least 60 days per year and is not a non-transient, non-community water system or a community water system.

(85) “TRANSIENT POPULATION” means the average number of individuals served per day during the year or annual operating period(s), who have an opportunity to consume water from the system, but who do not meet the definition of either resident population or non-transient population.

(86) “TREATMENT TECHNIQUE REQUIREMENT” means a requirement that specifies a treatment technique(s) for a contaminant which leads to a sufficient reduction in the level of the contaminant to comply with the requirements of the Colorado Primary Drinking Water Regulations. A treatment technique may also be a requirement that is intended to prevent situations that have the potential to have serious adverse effects on human health.

(87) “VIOLATION” means failure to comply with any requirement of the Colorado Primary Drinking Water Regulations.

(88) “VIRUS” means a virus of fecal origin, which is infectious to humans by waterborne transmission.

(89) “WATERBORNE DISEASE OUTBREAK” means the significant occurrence of acute infectious illness, epidemiologically associated with the ingestion of water from a public water system which is deficient in treatment, as determined by the appropriate local or State agency.

(90) “WATERWORKS” means the facilities that are directly involved in the production, treatment, or distribution of water for public water systems.

(91) “WATER QUALITY CONTROL COMMISSION” means the commission that has been created within the Colorado Department of Public Health and Environment pursuant to section 25-8-201, Colorado Revised Statutes.

(92) “WATER VENDING AND DISPENSING MACHINES” means any device which, upon payment dispenses water into a container.

(93) “WHOLESALER” means any person who owns or operates and is legally responsible for a wholesale system.

(94) “WHOLESALE SYSTEM” means a public water system that treats source water as necessary to produce finished water and then delivers some or all of that finished water to another public water system.