9th TRC - Statement of Work 3.1.2023 - Modeling.pdf

STATEMENT OF WORK

NINTH TECHNICAL COMMITTEE REVIEW OF

DIVERSION FLOW MEASUREMENTS

AND

ACCOUNTING PROCEDURES:

MODELING EXPERT

1. BACKGROUND: LAKE MICHIGAN DIVERSION

The diversion of water from the Lake Michigan watershed (see figure on next page) is of a major importance to the Great Lake states and to the Canadian province of Ontario. The states and province that border the lakes have concerns with both diversions during periods of low lake levels as well as the long-term impacts of diversion. The United States Army Corps of Engineering, Great Lakes and River Division, Chicago District, has been given the responsibility for the accounting of flow that is diverted from the Lake Michigan watershed and provide assurance to these concerned interested parties.

The completion of the Illinois and Michigan Canal in 1848 created a watercourse connection point between the Great Lakes and the Mississippi River system. The canal diverted water from Lake Michigan at Chicago into the Mississippi River Basin. At that time, the diversion averaged about 500 cubic feet per second (cfs).

With the development of the Chicago metropolitan area, drainage and drainage improvements led to severe sanitation problems in the mid to late 1800's. The newly constructed sewers moved water and wastes into the Chicago River, which until 1900 principally drained to Lake Michigan. The water quality of Lake Michigan deteriorated and as such contaminated the city's primary water supply.

A second problem that occurred during this time period was an increase in the overbank flooding within the city. As more roads were built and buildings constructed the sewer system was correspondingly expanded. This increased the rate and volume of runoff and resulted in increased flooding.

As a solution to the sanitation and flooding problems construction of the Chicago Sanitary and Ship Canal (CSSC) and the Chicago River Controlling Works (CRCW) was undertaken. This construction allowed the flow direction of the Chicago River to be reversed.

The Metropolitan Water Reclamation District of Greater Chicago (MWRDGC) completed construction of the Chicago Sanitary and Ship Canal in 1900. The CRCW was constructed at the mouth of the Chicago River. The CRCW is composed of a lock and dam with sluice gates that regulates the amount of Lake Michigan water allowed to pass into the river and restricts river flooding from entering Lake Michigan.

Between 1907 and 1910 the MWRDGC constructed a second sanitary canal called the North Shore Channel. It extended from Lake Michigan at Wilmette in a southerly direction 6.14 miles to the North Branch of the Chicago River. The Wilmette Controlling Works regulate the amount of Lake Michigan flow allowed down the channel. There is no lock at the Wilmette Controlling Works.

Construction of a third canal, the Calumet Sag Channel, was completed in 1922. The canal connects Lake Michigan through the Calumet River and Grand Calumet River, to the Sanitary and Ship Canal. This canal was constructed to carry sewage from South Chicago, Illinois and East Chicago, Indiana. The O'Brien Lock and Dam located on the Calumet River regulates the flow of Lake Michigan waters down the canal.

In 1908 and again in 1913, the United States brought actions to enjoin MWRDGC from diverting more than the 4,167 cfs previously authorized in 1901. The two actions were consolidated, and the Supreme Court entered a decree on 5 January 1925 allowing the Secretary of War to issue diversion permits. In March 1925, a permit was issued to divert 8,500 cfs, which was about the average then being used.

In 1922, 1925, and 1926, several Great Lakes States filed similar original actions in the U.S. Supreme Court seeking to restrict diversion at Chicago. A Special Master, appointed by the Court to hear the combined three suits, found the 1925 permit to be valid and recommended dismissal of the action. The Supreme Court, however, reversed his finding. Subsequently, the Court instructed the Special Master to determine the steps necessary for Illinois and MWRDGC to reduce diversion. Consequently, a 1930 decree reduced the allowable diversion (in addition to domestic pumpage) in three steps: 6,500 cfs after 1 July 1930; 5,000 cfs after 30 December 1935;

and 1,500 cfs after 31 December 1938.

In 1967, the Supreme Court issued another decree limiting the diversion, including domestic pumpage, of Lake Michigan water into the Illinois Waterway by the State of Illinois and its municipalities, to an average of 3,200 cfs over a five-year period effective 1 March 1970. The 1967 Supreme Court decree gave full responsibility to the State of Illinois for diversion measurements and computations. The decree specified the Corps of Engineers role as one of "general supervision and direction."

In 1980, the Court modified the1967 decree by increasing the period for determining compliance with the 3,200 cfs limit from a five-year running average to a forty-year running average. Additionally, the beginning of the diversion accounting year was changed from 1 March to 1 October. A limit was placed on the average diversion in any accounting year (3,680 cfs) except for an average diversion of 3,840 cfs to be allowed in any two accounting years within a forty-year period. A limit was placed on the cumulative algebraic sum of the average annual diversion credits and deficits (amount above or below 3200 cfs for a given year) during the first 39 years. This limit is 2,000 cfs-years. These changes reduce the State of Illinois' dependency on the vagaries of nature when establishing domestic pumpage rates.

The 1 December 1980 modification also directed the Chief of Engineers to appoint a three-member committee and to reconvene such a committee at least once every five years, in order to evaluate the method used for measuring and computing the amount of diverted flow. In accordance with the decree all measurements and computations used in determining the diversion shall be made using the best current engineering practice and scientific knowledge. The three-member committee is responsible for reporting on the method of accounting and operation of the accounting procedures.

The modified decree stated that: "The members shall be selected on the basis of recognized experience and technical expertise in flow measurements or hydrology. None of the committee members shall be employees of the Corps of Engineers or employees or paid consult-ants of any of the parties to these proceedings other than the United States." The fifth, sixth, seventh and eighth technical committees convened in January 2003, January 2008, May 2013, and June 2018, respectively. Although not explicitly stated in the decree, it is the intent of the parties that the Corps bears all costs associated with this three-member committee.

Finally, the modified decree directed the Corps to prepare an annual report summarizing activities relating to the diversion program and certifying diversion flows.

The Water Resources Development Act of 1986 gave the Corps of Engineers the responsibility for performing diversion accounting. The Chicago District new mission became effective on 1 October 1987. During its execution of the mission the Corps of Engineers has completed a number of major actions, including:

a. Adopting a computerized diversion accounting model used by the State of Illinois. The Corps of Engineers updated the model to work in a PC environment more fully, and to correct errors (noted by the second technical committee) in the input parameters.

b. On behalf of the Corps of Engineers, the United States Geological Survey (USGS) installed a new Acoustic Velocity Meter (AVM) at Lemont, upstream of Lockport, Illinois (the measurement point for diversion accounting). The Corps of Engineers provided additional back-up measures for this instrument.

c. The Corps of Engineers had the State of Illinois Water Survey (ISWS) install a new network of rain gages for the watersheds involved in the accounting of the Lake Michigan diversion. The ISWS installed the digital data loggers and cellular data modem at each of the 25 rain gage sites to enhance the reliability of network operation.

This network was discontinued in 2019.

d. For the Corps of Engineers, USGS installed a stream gage on the Grand Calumet River near the IL/IN state boundary, and later relocated to Columbia Avenue to get better discharge rating.

e. The MWRDGC installed a flow meter in an interceptor at the Upper Des Plaines

Pumping Station that collects data useful to validate simulated runoff of the Upper Des Plaines River watershed.

f. The Corps of Engineers completed the diversion accounting reports and certified the diversion flows for WY 1986 through WY 2019.

g. The Corps of Engineers had the USGS, and the University of Illinois at Urbana- Champaign develop a 3-D hydraulic model for the canal near Lemont gaging station to explore possible flow distributions that may affect the index velocity rating at Lemont.

h. The USGS compared the index velocity measurements made with a horizontal acoustic doppler velocity meter (H-ADVM) versus a 3-path AVM on the CSSC near Lemont.

i. The Corps of Engineers developed hydrologic and hydraulic models for the Lower Des Plaines River for evaluating the bypass surface runoff from the Des Plaines River to the CSSC during extremely large rain events.

j. The Corps of Engineers had the USGS install a network of rain gages, coming fully online in October 2020, replacing the network originally installed by ISWS.

k. The Corps of Engineers had the USGS develop a program to replace the legacy SCALP model, allowing it to be run on current Corps computer systems.

2. MEASUREMENT POINTS AND COMPONENTS

The measurement point and diversion components are discussed in the following:

2.1. LOCKPORT DIVERSION ACCOUNTING

The measurement location, as specified in the Supreme Court decree of 1967 as modified in 1980, is at Lockport, Illinois. Flow at this point contains both diversion and non-diversion flows. The primary goal of the Corps of Engineers is to determine the various components of this flow to obtain the total diversion flow. An ADVM has been installed at Lemont for direct measurement of Lockport flows. The area of the Lake Michigan diverted watershed is 673 square miles.

The primary components of the Lake Michigan diversion are as follows:

a. Water supply pumped directly from Lake Michigan and discharged into the river and canal system in the greater Chicago area as treated sewage.

b. Storm runoff discharged from the diverted watershed area of Lake Michigan, draining to the river and canal system in the greater Chicago area.

c. Water entering directly from Lake Michigan into the river and canal system in the Greater Chicago area.

Water supply that is pumped from the lake enters intake cribs off the Chicago Shoreline.

Water from these cribs is pumped through tunnels to provide water to Chicago and many suburbs.

Most of this water enters sewer systems and eventually travels to one of three water reclamation plants in the Chicagoland area. These are O’Brien Water Reclamation Plant, Stickney Water Reclamation Plant, and Calumet Water Reclamation Plant. A small portion of the water supply effluent discharges to various wastewater treatment plants in the Chicago suburban area.

The runoff from the original Lake Michigan basin enters the combined sewer systems and watercourses. The combined sewers mix sanitary flows with runoff. This water normally goes to the treatment plants or, during major flood events, is overflowed into the watercourses. In some areas runoff is discharged directly to the watercourses via overland flow or storm sewers.

Direct diversion locations are at CRCW, O'Brien Lock and Dam, and Wilmette Pumping Station. The flows at CRCW and O'Brien include the following categories: (a) lockages, (b) leakages, (c) discretionary flows, and (d) navigation makeup. The breakdown is the same at Wilmette, with the exception that there is no lockages or navigation makeup.

The non-diversion flows that discharge past Lemont are termed deductibles and are subtracted from the total Lockport flows to obtain diversion flows. Deductible flows consist of the following categories:

a. Groundwater pumpage from the Lake Michigan watershed. The magnitude of this deduction is obtained directly from pumping records.

b. Groundwater pumpage from the Des Plaines Watershed. The magnitude of this deduction is also obtained directly from pumping records.

c. Water supply pumpage from Indiana that enters the canal system. The magnitude of this deduction is computed from stream gage records and a calculation that determines the portion of the water supply draining west to the Calumet-Sag Channel.

d. Runoff from the Des Plaines Watershed (the Upper Des Plaines area, Summit Conduit drainage area and the Lower Des Plaines area) that is discharged to the canal system either directly or via combined and sanitary sewers.

e. Water supply pumpage by federal facilities whose effluent is discharged to the canal.

Stormwater runoff and infiltration from an area of 217 square miles of the original Des Plaines River Watershed is discharged into the Sanitary and Ship Canal. Because these flows are either not gaged or not gaged effectively they are computed through a simulation model (see below). The runoff and infiltration components are as follows:

a. Infiltration - flow from a 140 square mile area of the Upper Des Plaines Watershed north of the canal that reaches the canal system by infiltration and inflow to the sewer system.

b. Summit Conduit - surface runoff from a 5.4 square mile area in the Des Plaines River Watershed that passes through the Summit Conduit beneath the Des Plaines River directly into the Sanitary and Ship Canal.

c. Des Plaines River Watershed south of the Main Channel - runoff from a 67.0 square mile area of the Des Plaines River Watershed that is south of the Sanitary and Ship Canal and is cutoff from the Des Plaines River by the canal.

d. Sewer System 13A - intercepts and provides storage for a 4 square mile area of the Des Plaines watershed north of the canal.

The State of Illinois developed a computerized diversion accounting system. The system has been used for the 1983, 1984 and 1985 diversion accounting year analyses. The new accounting system uses state-of-the-art technology along with computerized hydrologic simulation techniques for those components of diversion that cannot be directly measured. The modeling techniques and parameters used are continually updated and revised to reflect any modifications in the diversion accounting system. The State's agent in the development of the system was the Chicago Metropolitan Agency for Planning (CMAP), previously known as the Northeastern Illinois Planning Commission (NIPC). The system accounts for diversion flows by utilizing a series of water budgets to account for the different categories of flow. The actual accounting process is done on an annual basis.

Additional flow that is added back into the total diverted amount consist of the pumpages, and sewer overflows. These flows are measured, except for the overflows that are simulated using the computer model. Specifically, these flows consist of:

a. Lake Michigan domestic pumpage that enters the Des Plaines River (sewage effluent by-passing Lemont), and

b. Combined sewer overflows in the areas serviced by the plants that discharge to the canal.

Diversion flow comprises the major portion of the flow at Lemont. Normally, diversion flow makes up 88-92% of the flow at Lemont, with the percentage slightly higher during the summer months (greater seasonal demand). It is also estimated that 10% of water supply is lost to consumptive use (not returned to canal as sewage effluent).

The measuring point at Lockport has long been of concern in the computation of Lake Michigan Diversion. Originally, flow at Lockport was determined from rating curves for various components of the Lockport Powerhouse and Controlling Works. However, because of errors in the rating curves an AVM was used to replace the Lockport rating curves as a primary means of measuring flow in the Sanitary and Ship Canal. The installation of the first AVM was completed in March 1984. The meter was located on the Sanitary and Ship Canal upstream from Lockport at the Romeoville Road Bridge. Due to problems in the operation and maintenance of the first AVM, the Chicago District, in cooperation with the USGS, contracted with Accusonic Division, Ferranti O.R.E., Inc. for installation of a new AVM for measurement of flow at Lockport. The new AVM system was installed in November/December 1989, at the site of the original AVM. The AVM gage at Romeoville was relocated to Lemont due to a concern of operational interference from the electric fish barrier installed on the canal immediately upstream from the Romeoville Road bridge.

To reduce the probability of data loss due to equipment failure, a co-located H-ADVM was installed to collect concurrent data. The data from the Lemont gaging station have been used for diversion accounting since WY 2006.

Finally, The Corps of Engineers has prepared a comprehensive manual on the procedures for performing diversion accounting. As additional inputs to the process have been introduced or processes associated with elements of the procedure have changed, the manual is updated accordingly.

3. GENERAL SERVICES

The services to be rendered by the committee members under this contract shall include reviews of the previous committee's reports and a comprehensive review of the current diversion accounting procedures. More specifically, the work shall include, but not be limited to, the review of the automated accounting system as well as the review of current diversion related measurement techniques at the ADVM site, the Lockport control structures, the precipitation gages and other pertinent locations. The determinations of the adequacy of the accounting procedures should be made in accordance with the stipulations of the 1967 Supreme Court decree with the 1980 modifications. The work will include: (1) analysis of current diversion-related measurement techniques and accounting procedures, (2) evaluation of these techniques and procedures as to whether they are using the best current engineering practice and scientific knowledge, (3) recommendation of appropriate revisions within the legal constraints of the decree,

(4) review of the user’s manual for completeness and clarity, and (5) preparation of draft and final reports. The Government will schedule and monitor appropriate activities to provide the committee members with available information.

4. COMMITTEE STRUCTURES

The committee shall consist of three members. All committee members will be responsible for analyzing and evaluating the pertinent information. One member shall be designated as the chair and will have responsibility to provide administrative leadership and coordination regarding the activities of all three members. A second member will have the technical responsibility for reviewing the hydrologic, hydraulic and computer modeling of the diverted watershed. The third member will have the technical responsibility for reviewing the flow measurements, including the statistical analyses. Each member will exercise independent judgment and any differences in opinion between the members of the committee shall be documented in the final report.

The duties of the modeling expert include:

a. Providing their findings to the chair for consolidation into a draft report.

b. Responding to The Corps of Engineers' comments associated with the draft report in preparing the final report.

c. Presenting the committee's Final Report.

d. Responding to the comments on the report obtained from all parties of the litigation as well as from the Corps of Engineers, the United States Geological Survey, and the Metropolitan Water Reclamation District of Greater Chicago.

e. Presenting the committee's response to the comments.

f. Reviewing in detail the technical basis and application of the computerized diversion accounting models.

g. Review the input data used and the results from the models in determining the flows for each diversion category.

h. Make recommendations on upgrading the models or altering the application of the models to correspond to physical changes to the diverted watershed.

i. Prepare the modeling portions of the committee report.

5. INFORMATION AND SERVICES TO BE FURNISHED BY THE GOVERNMENT

The Contracting Officer or his/her representative will be responsible for providing available information and material to the modeling expert. The Government will furnish the modeling expert with a briefing packet. The briefing packet will include pertinent materials relating to work responsibilities of the committee. It will contain a summary of information relating to the computation of Lake Michigan Diversion at Chicago in addition to relevant drawings and reports. Attachment 1 to include Volume 1 thru 5. The Government, in addition, will arrange several workshops to provide the opportunity for an exchange of information between the committee members and the Government. Additionally, the workshops will ensure that progress on the scheduled activities is being maintained.

The Government will conduct all field trip arrangements and provide for local transportation needs during the field trips. Transportation will be limited to ground-based means.

The Government will provide technical assistance to the committee. Technical assistance shall include assistance in locating available reports, publications and photographs relating to Lake Michigan Diversion at Chicago. In addition, the Contracting Officer or his/her representative will assist by providing appropriate explanations on various topics pertaining to Lake Michigan Diversion. These explanations will ensure that the modeling expert has an accurate perspective for his/her analysis of diversion components. All possible avenues of communication will be made available to the modeling expert for the procurement of information related to their study. The Corps of Engineers will fully support the modeling expert by both answering questions and by providing any additional materials they may require.

All contractor and all associated sub-contractors’ employees shall comply with applicable installation, facility and area commander installation/facility access and local security policies and procedures (provided by government representative). The contractor shall also provide all information required for background checks to meet installation/facility access requirements to be accomplished by installation Provost Marshal Office, Director of Emergency Services or Security Office. Contractor workforce must comply with all personal identity verification requirements (FAR clause 52.204-9, Personal Identity Verification of Contractor Personnel) as directed by DOD, HQDA and/or local policy. In addition to the changes otherwise authorized by the changes clause of this contract, should the Force Protection Condition (FPCON) at any installation or facility change, the Government may require changes in contractor security matters or processes.

6. SPECIFIC DUTIES OF THE COMMITTEE

The following is a general description of the activities to be participated in and the duties to be performed by the modeling expert:

a. Engineering Data Review:

Prior to the field inspections, the modeling expert shall, with Government personnel, review available engineering data relating to the computation of Lake Michigan Diversion at Chicago. This review will include perusal of pertinent reports, drawings and specifications which are involved in the regulation and accounting of the diversion.

b. Field Inspections:

The modeling expert shall perform field inspections during field trips for information purposes. Government personnel may accompany them to provide direction and guidance.

The field inspections shall include the ADVM site, Lockport Powerhouse, and Lockport Controlling Works. Visits may also be made to MWRDGC works (water reclamation plants, pump stations, and deep tunnel facilities), USGS precipitation gage sites, and other pertinent surface and groundwater flow source sites. All sites are within the local commuting area.

c. Technical Workshop:

A post award orientation will be held via teleconference during the first week of committee work. The Government will furnish the modeling expert a briefing package at that time.

The modeling expert shall attend planned workshops during the time that the committee convenes. Workshop I and II shall be in person; Workshop III may be either in person or teleconference. These workshops provide opportunities for the exchange of information between the committee and Government. Portions of each workshop will be open to the parties to the Supreme Court decree. The agenda for workshops will be determined by the Government and will be on a relatively fixed schedule. The purpose of this initial workshop will be to acquaint the committee members with the area in which they will be working. This will be accomplished through field trips to areas and entities associated with the measuring of diversion. The Government will coordinate these trips. Workshops II and III will each be of a three-day duration. The agendas for these workshops will be fixed and determined by mutual agreement of the committee with approval from the Government, at least one week prior to the scheduled start of the corresponding meeting. In addition, the committee members will be required to attend a two-day Findings Meeting to present the final report. In coordination with the committee members, the Government will determine the exact dates for Workshops and the Finding Meetings as approximated in the Schedule of Activities.

d. Engineering Analysis:

The modeling expert shall review information provided by the Government and obtained through other sources. The current method of computing the diversion will be examined.

The evaluation of the existing procedure may include the loading and running of the models and associated programs (all models and data will be provided by the Government, upon request). Pertinent factors that have an effect on diversion computations shall be evaluated. Alternative methods of computing diversion using state-of-the-art hydrologic and hydraulic methods will be considered as well as improvements to the existing procedures. Evaluations will also be made of the measurement techniques used in obtaining all pertinent diversion accounting data. Based on this information, the committee will include in the final report a summary of the existing and proposed accounting procedures for the Lake Michigan Diversion at Chicago. The committee shall estimate to what degree the accuracy of the diversion computation will be improved under the recommended method and the approximate costs of implementing the recommended plan.

Under the decree, the Government shall then determine the best current engineering practice and scientific knowledge for computing diversion, based upon the recommendation of the committee members.

e. Preparation of Report:

The modeling expert shall complete their respective section of the draft and final report and provide it to the chairperson to ensure timely submittal of the documents to the Corps of Engineers. The Government will provide pertinent photographs and the correct format for plates and covers. All Government furnished materials and originals shall be returned.

7. PERIOD OF PERFORMANCE

The length of the contract shall be 12 months. The tasks associated with this Statement of Work and corresponding schedules are listed in Attachment 2.

8. VETERANS EMPLOYMENT EMPHASIS FOR U.S. ARMY CORPS OF ENGINEERS

CONTRACTS

In addition to complying with the requirements outlined in FAR Part 22.13, FAR Provision 52.222-38, FAR Clause 52.222-35, FAR Clause 52.222-37, DFARS 222.13 and Department of Labor regulations, U.S. Army Corps of Engineers (USACE) contractors and subcontractors at all tiers are encouraged to promote the training and employment of U.S.

veterans while performing under a USACE contract. While no set-aside, evaluation preference, or incentive applies to the solicitation or performance under the resultant contract, USACE contractors are encouraged to seek out highly qualified veterans to perform services under this contract. The following resources are available to assist USACE contractors in their outreach efforts:

- U.S. Department of Labor Veterans’ Employment and Training Service (VETS): https://www.dol.gov/vets/

- Federal Veteran Employment Information: https://www.fedshirevets.gov/

- Veterans Opportunity to Work (VOW) Program: https://www.benefits.va.gov/vow/

- U.S. Army Warrior Transition Command (Employment Index): https://www.usar.army.mil/WTP/

- Hiring Our Heroes: https://www.uschamberfoundation.org/hiring-our-heroes http://www.dol.gov/vets/ http://www.fedshirevets.gov/ http://www.uschamberfoundation.org/hiring-our-heroes

ATTACHMENT 1

NINTH TECHNICAL COMMITTEE FOR REVIEW OF

DIVERSION FLOW MEASUREMENTS AND

VOLUME 1

General Background Information

Section Number Title

A Water Resources Development Act of 1986

B Report of Albert B. Maris, Special Master dated 11 August 1980

C "SUPREME COURT OF THE UNITED STATES, OCTOBER Term, 1966.

WISCONSIN ET AL. v. ILLINOIS ET AL.; MICHIGAN v. ILLINOIS ET AL.; AND ILLINOIS v. MICHIGAN ET AL. ON JOINT MOTION FOR ENTRY OF DECREE.

Nos. 1, 2, 3, and 11 Originals. JUNE 13 1967"

D “Wisconsin v. Illinois, 388 U.S. 426 (1967); 449 U.S. 48 (1980).

E The Great Lakes Mediation Memorandum of Understanding dated July 29, 1996

VOLUME 2

Reports of Previous Technical Committees

Section Number Title

A Final Report and Recommendations of First Committee

B Addendum to Final Report of First Committee

C Final Report and Recommendations of Second Committee

D Final Report and Recommendations of Third Committee

E Final Report and Recommendations of Fourth Committee

F Final Report and Recommendations of Fifth Committee

G Final Report and Recommendations of Sixth Committee

H Final Report and Recommendations of Seventh Committee

I Final Report and Recommendations of Eighth Committee

VOLUME 3

State of Illinois Water Allocation Program

Section Number Title

A Lake Michigan Water Allocation Review and Modification (dated 11 April 2022)

B Illinois Compliance Plan

VOLUME 4

Measurement Locations for Diversion Accounting

Section Number Title

A Acoustic Velocity Meter at Lemont

B Upper Des Plaines Pumping Station

C Little Calumet River at South Holland

D Little Calumet River at Munster

E Grand Calumet River at Columbia Avenue in Hammond

F North Branch Chicago River at Niles

G Precipitation Gages

VOLUME 5

Accounting Procedure Manuals

Section Number Title

A Lake Michigan Diversion Accounting User’s Manual of Procedures

Attachment 1

ATTACHMENT 2

NINTH TECHNICAL COMMITTEE FOR REVIEW OF

DIVERSION FLOW MEASUREMENTS AND

SCHEDULE OF ACTIVITIES

Task Completion Time After No. Contract Award in Weeks

1. Workshop No. 1 (3 work days) 4*

2. Workshop No. 2 (3 work days) 8

3. Workshop No. 3 (3 work days) 12

4. Committee members submit their findings to chairperson for consolidation into Draft Report. 20

5. Committee members review Draft Report 22

6. Chairperson submits Draft Report to the Corps of Engineers and committee members for review. 24

7. Received comments on Draft Report from the Corps of Engineers 27

8. Findings Meeting (2 work days) Committee presents Final Report to District and other parties with appropriate presentation by committee members. 29

9. Chairperson submits to the Corps of Engineers committee responses for comments from all parties 32

10. Chairperson submits the Final Finding Report 35

*The 4-week lead time is needed for sending invitation letters to all parties of interest.

Attachment 2

ATTACHMENT 2