178561 178561
Original to City Clerk
CITY OF ST. PAUL F°ENT NO.
OFFICE OF THE CITY CLERK 3, Pilo COE TION—GENERAL FORM B .t �+ 4.
PRESENTED BY + T gi3n
COMMISSIONER DATE -T
RESOLVED, That the Council of the City of Saint Paul,
upon due consideration of the report thereon by the Chief
Engineer of Minneapolis-Saint Paul Sanitary District and
the Resolution of the Board of Trustees of said District
recommending and approving the institution and conduct
of the proposed Program of. Research and Investigation in
behalf of said District, calculated to assist said District
in its determination of future requirements of said District' s
Sewage Works, both submitted to said Council under date of
May 15, 1956, that said proposed Program of Research and
Investigation and the institution and conduct of the same
in behalf of said District be and the same hereby are, in
all things, approved.
JUN 2 8 1956
COUNCILMEN Adopted by the Council 41V401195—
Yeas Nays
DeCourcy 12 8195E
Holland Approved 195_
Marzitelli /`�
Mortinson Tn Favor _
Peterson J Mayor
Rosen Against
Mr.President, Dillon
6M 6-06 01619.2 e - - y Y�
PUBLISHED L!L!Y�/ -
y •
-
May 24, 1956
Honorable Mayor and Members of the City Council
City of St. Paul, Minnesota
Gentlemen:
Under date of May 15, 1956 the Board of Trustees of the Minneapolis-
St. Paul Sanitary District submitted to the City Council a report of
their chief engineer and a resolution adopted by the Board of Trustees
recommending and approving the institution of a program of research and
investigation to assist in the determination of future requirements of
the Sanitary District's sewage works. This report and resolution was
forwarded by the Council to the Technical Committee for study and recom-
mendation.
The Technical Committee has considered this matter; and in view of the
many problems which will be involved in the expansion of the Sanitary
District plant to meet the needs of the metropolitan community, the
committee recommends to the Council its approval of this program of
research and investigation.
Respectfully submitted,
TECHNICAL COMMITTEE CO
o L- M. Shepard ting airman
i Engineer
G°ew
Edwin F. Jone Secretary
Utilities Engineer
EFJ:ew
t
MINNEAPOLIS-SAINT PAUL SANITARY DISTRICT
To the Board of Trustees Presented May 14, 1956
Gentlemen: Program of Research and Investigation
To Assist In The Determination Of
Future Requirements For Sanitary
District Sewage Works.
The present interceptor sewer system in the cities of Minneapolis and Saint
Paul was designed in 1928-1934 for conditions expected in the year 1970, only
fourteen years hence. Already there are indications that certain portions of
this system are approaching the design loadings.
The present Sanitary District sewage treatment plant was designed in 1928-
193 4 for conditions expected in the year 1945, already eleven years past. Since
that time the plant has reached its design loading, but only the sludge disposal
facilities have been enlarged, 33 per cent in 1950-51. The strength of the
plant effluent to the river, in terms of population equivalent, has increased
by 396,000 from 1939 through 1955, or 62. 5%, and is now in excess of a
million people.
The expected population growth in the Metropolitan Area during the decade
19554965 is over 200, 000(1), an undetermined portion of which will be con-
nected to this plant. In twenty-five years the Metropolitan Area population
is expected to almost double, barring a complete reversal of trends(2). At
present the outside area population connected to this plant is only about ten
per cent of the total connected population.
From the above information it becomes apparent that a study of possible future
requirements for Sanitary District sewage works should be undertaken. Nearly
thirty years ago, in 1927, the Metropolitan Drainage Commission began its
studies of the sewage disposal problems for this area. Those studies extended
over a period of six years and cost approximately $250, 000, but they pointed
the way to savings of approximately $5,000, 000 in the construction of the pres-
ent works. Built during the last depression, and with a PWA grant of about
27%, the present works cost approximately $15, 800,000 less the grant, or a
net cost to the cities of approximately $11, 500, 000. This was a real bargain,
compared with an estimated present replacement cost of $53, 500,000(3) for the
same works. With present day high construction costs, careful preliminary
studies become even more advisable, if time is available, before undertaking
the construction of secondary treatment facilities which might cost $10 to $15
million, exclusive of any enlargement of the interceptor sewers.
t
Research and Investigation Program -2- May 14, 1956
It appears that the cities will be faced with the necessity of increasing the
capacity of the present sewage works some 5 to 15 years in the future at a
cost level which may be five or more times the original cost. It is proposed
and recommended that a five-year program of research and investigation be
undertaken by the Sanitary District, beginning this year, and aimed at secur-
ing the most economical and satisfactory solution to the future sewage disposal
problem in the Metropolitan Area.
Authority for conducting such an investigation is contained in Section 445. 11
of the Sanitary District law, paragraph 1, which reads as follows:
"Before undertaking the construction or operation of any system
of sewage disposal for the district including intercepting sewers,
pumping stations, treatment works, and appurtenances, it shall be
the duty of the board of trustees of such sanitary district to adopt
a comprehensive plan and program of procedure and work, for
the collection, treatment, and disposal of sewage and waste mater-
ials of the sanitary district, and the same may be modified from
time to time with necessary maps, plats, surveys, and estimates
of probable cost of such system for the entire district based upon
the probable needs and requirements of the district and of any
adjacent territory likely to be annexed to such district, down to
such time in the future as to the trustees shall seem most efficient
and economical as well as proper and reasonable. "
While the connected population to this plant from the outside areas is now only
about 10% of the total connected population, it is obvious that the outside areas
are growing much faster than the Cities and that this percentage will increase
considerably if the Cities continue to allow more outside areas to connect to
their sewer systems. Other increases in this percentage will result as new
industries locate therein or if industries now located in the Cities move or
expand to the outside areas. The questions arise as to whether it is to the
best interest of the Cities to continue the practice of permitting sewer connec-
tions from outside areas, and if so, how can the costs be distributed fairly
between the Cities and the outside areas. The proposed study should include
a discussion of the engineering and economic factors pertinent to these ques-
tions and an engineering analysis of the reasonable tributary areas to the Twin
City Plant considering natural drainage and the availability and desirability
of other locations for suburban effluent discharge. This would assist the
Cities in reaching a decision whenever an outside area applies for connection
and enable the District to intelligently plan plant expansions from time to time
in accordance with a long-range plan.
An outline of the proposed program is attached to this communication. It is
a three-way program, i. e. , part of the work would be done by the Sanitary
District staff, part by the University of Minnesota sanitary engineering depart-
ment under Professor Geo. J. Schroepfer through research grants from the
Research and Investigation Program -3- May 14, 1956
Sanitary District, and part by a firm of consulting engineers. The program
is spread over five years to facilitate financing and to allow time for the collec-
tion and analysis of engineering, laboratory and pilot plant data.
The estimated cost of the research grants to the University for the five-year
program would average $21, 000 per year. For the Sanitary District's part, it
may prove advisable to add another engineer and another chemist to the staff.
The consulting engineer work should probably be done on a cost-plus basis in
a manner similar to that done for the Metropolitan Airports Commission. For
the consulting engineer work, I would recommend either Greeley & Hansen of
Chicago, Black & Veatch of Kansas City, or Toltz, King, Duvall, Anderson and
Associates, Inc. of Saint Paul. The latter organization is the only local firm
that I would recommend for this particular work. I believe they are competent
to do this work and possess the added advantage of being thoroughly familiar
with local conditions. Two of their principal engineers, A. J. Duvall and A. M.
Steffes, were on the staff of the Metropolitan Drainage Commission or the Sani-
tary District throughout the design and construction of the present sewage works.
When it is considered that Professor Schroepfer, under whose direction the
University's portion of the proposed work would be done, was Assistant Chief
Engineer throughout the work of the Metropolitan Drainage Commission, and
during the design and construction period for the Sanitary District, as well as
being Chief Engineer during the first seven years of plant operation, the District
would be indeed fortunate in again securing the services of so many of the same
men who made such an outstanding record in the design and construction of the
present works.
Recommendation of this long-range program of research and investigation should
not be interpreted as precluding the possibility that certain units of the plant
such as the sludge disposal facilities may require expansion before the remainder
of a long-range expansion is effected.
The University's share of the proposed work for the balance of this year is
estimated at $8, 800.00. I recommend that the District establish a research
grant at the University for that amount for the year 1956, with the further
understanding that the District will sponsor as a minimum that portion of the
Univsrsity's share of the Research Program designated as Sections A-1, A-2,
A-3, and A-5 of the attached Research Program, in a total amount of $17, 050.00
extending to September 15, 1957. 1 further recommend that the District enter
into a cost-plus contract with Toltz, King, Duvall, Anderson and Associates,
Inc. for the balance of the year 1956, and that I be authorized to inaugurate the
attached program of research and investigation on behalf of the Sanitary District,
the total expenditure on which for the balance of the year 1956 would not exceed
$25, 000.00; and that I be further authorized to include the sum of $35, 000.00
in the budget for the year 1957 for the second year of the proposed five-year
program.
Respectfully submitted,
K resin L. Mick
Chief Engineer & Superintendent
Research and Investigation Program -4- May 14, 1956
(1)City of Saint Paul Planning Board Publication No. 101, July 1955.
(2) " II " " Newsletter No. 3, Vol. XI, March 5, 1956.
(3)$15, 800, 000 x 3. 38 = $53, 500, 000. The factor 3. 38 is derived from the
construction cost index as published by Engineering News-Record. This
index was 676 in January 1956 and averaged only 200 during the construction
period 1934 through 1937, a ratio of 676/200 or 3. 38. ( Engineering News-
Record, September 29, 1955 and January 5, 1956. )
•
• MINNEAPOLIS-SAINT PAUL SANITARY DISTRICT
Program of Research and Investigation
To Assist in the Determination of Future Requirements
For Sanitary District Sewage Works
I. THE RESEARCH PROGRAM
A. The Mississippi River - The Mississippi River in the Twin City area is
unique in that there is a practically uninterrupted record of river condi-
tions for the 30-year period since 1926 covering a stretch of the river
almost 100 miles in length.. This information should be invaluable in any
calculations concerning future requirements for sewage treatment and
studies of the usability of downstream river water for various purposes.
Among the studies suggested are the following:
1. Determination of the deoxygenation and reaeration char-
*(U) acteristics of the river at various points both before and
after the operation of the present plant.
2. The frequency of occurrence of critical dissolved oxygen
(U) values from actual records since the Minneapolis-Saint
Paul Sanitary District and the South St. Paul plants were
placed in operation. This study should be related to the
various factors which influence stream pollution and re-
covery so that an accurate appraisal of river conditions
can be available.
3. A statistical study based on the above and a consideration
(U) of the effect of river discharge frequency on the degree of
treatment requirements for various rates of metropolitan
area growth under differing influencing conditions.
4. A study of hourly variations in dissolved oxygen content of
*(D) the Mississippi River at selected stations. This can be
done by hand sampling but preferably by automatic and con-
tinuous recording devices.
5. A statistical study of the bacteriological quality of the river
(U) at the various sampling points above and below the Twin
Cities plant.
6. A study of the nutrients in the plant effluent of both the Minne-
apolis-Saint Paul and South St. Paul plants as well as in the
Mississippi River related to the effect on algal conditions
downstream.
Research and Investigation Program - page 2
a. This would include the collection and analysis of data
(0) on nitrogen and phosphorus composition of the river
and various plant effluents over a period of time.
b. The computation of a nitrogen and phosphorus balance
(U) for the present plant.
c. Recording of data on river algal conditions above and
(U) below Minneapolis-Saint Paul and on the St. Croix River.
This can be done in a preliminary way by the present
samplers, but the study should include an investiga-
tion by a competent biologist.
B. Treatment Plant Investigations.
1. Pilot plant investigation of the activated sludge process and
(U) its modifications to assist in determining:
(D)
(C) a. The economics of various modifications.
b. The removal of nutrients by the various modifications.
c. The possible effect of the nutrients on nuisance and
dissolved oxygen conditions caused by algal growth
and decay downstream.
2. Large scale pilot plant demonstration of the effectiveness
(U) of a stabilization pond in the removal of BOD, suspended
(D) solids and nutrients when treating a settled and chemically
(C) treated effluent. After tests in a pilot plant, a larger scale
unit should be constructed. A pond of an acre or more in
extent in the Pigs Eye Lake area is envisioned. The data
collected on this study could then be employed in an econ-
omic comparison of this method along with the more con-
ventional methods of sewage treatment.
II. THE INVESTIGATION PROGRAM
A number of avenues of investigation are suggested as being necessary and
desirable when consideration is given to the fact that a construction program in
the next 5 to 15 years costing over ten million dollars is a possibility.
Research and Investigation Program - page 3
A. A Broad Plan for the Extension of the Intercepting Sewer System
To Handle Outside Areas as it Affects the Sewer Systems of Minneapolis
and Saint Paul and the Intercepting Sewer System of the Sanitary District.
1. A study of various methods of resolving the suburban growth
problem including consideration of the following possibilities:
a. Considering the existing intercepting system as suffi-
*(C) cient to handle the Minneapolis-Saint Paul problem in
the future with the suburban areas being supplied by a
new system.
b. Use of the present procedure wherein outside areas
(C) are utilizing a portion of the capacity of the system
provided for the Twin Cities.
c. A study of various methods which embody the utilization
(C) of both of the above procedures. This would appear to
be the principal avenue of investigation.
2. An engineering analysis of the reasonable tributary area to the
(C) Twin City plant considering natural drainage, availability and
desirability of other alternatives for suburban effluent dis-
charge.
3. A consideration of the advantages and disadvantages of a
(D) Metropolitan District in solving the many problems associated
with suburban growth especially as industries move to these
areas.
B. A Broad Plan for the Enlargement of the Present Sewage Treatment
Facilities.
1. Based on the present treatment methods which include
(C) sedimentation plus periodic chlorination, and chemical
coagulation when necessary. This would involve an enlarge-
ment of the existing works.
2. Based on secondary treatment by a number of methods.
(C) These would include:
a. Activated sludge and modifications thereof.
1. Standard activated sludge process.
2. High rate and modified processes.
3. Other new developments.
b. The high rate trickling filter process in either single
or double stage.
Duplicate to P lmtcr '%
CITY OF ST. PAUL COUNCIL NCIL NO
OFFICE OF THE CITY CLERK
COUNCIL RESOLUTION—GENERAL FORM
PRESENTED BY
COMMISSIONER DATF
RESOLVED, That the Council of the City of Saint Paul,
upon due consideration of the report thereon by the Chief
Engineer of Minneapolis-Saint Paul Sanitary District and
the Resolution of the Board of Trustees of said District
recommending and approving the institution and conduct
of the proposed Program of Research and Investigation in
behalf of said District, calculated to assist said District
in its determination of future requirements of said District's
Sewage Works, both submitted to said Council under date of
May 15, 1956, that said proposed Program of Research and
Investigation and the institution and conduct of the same
in behalf of said District be and the same hereby are, in
all things, approved.
JUN 2 8 1956
COUNCILMEN Adopted by the Council 195_
Yeas Nays
DeCourcy G r w 2 8 1956
Holland Approved 195_
Marzitelli
Mortinson In Favor
Peterson Mayor
Rosen Against
Mr. President, Dillon
5M 6.56 2
RESOLUTION NO. 817
MINNEAPOLIS-SAINT PAUL
SANITARY DISTRICT
PRESENTED BY Peterson DATE May 14, 1956
RESOLD
WHEREAS, The growth in population and industrial expansion of Minneapolis
and Saint Paul and their outlying communities has resulted in a steady but ever-
increasing demand upon the facilities of this Sanitary District's sewage treatment
plant, and
WHEREAS, Certain portions of the present sewage works have already reached
or are approaching design loadings, it is apparent that sometime within the next five
to fifteen years it will be necessary for the areas served to provide funds for plant
expansion, and
WHEREAS, In anticipation of the necessity of future plant expansion, this Board
of Trustees has recently acquired certain lands to be devoted to that use, and
WHEREAS, The Board has this day received a communication (Board File
No. 5104) proposing a Program of Research and Investigation to Assist in the Deter-
mination of Future Requirements of this Sanitary District's Sewage Works (Board
File No. 5105), said program to be undertaken over a five-year period, beginning
this year, and aimed at securing the most economical and satisfactory solution to
the future sewage disposal problem in this metropolitan area, and
WHEREAS, The general purpose and object of this Sanitary District is to pro-
mote the public health and welfare by providing an adequate and efficient system and
means of collecting, conveying, pumping, treatment and disposal of all domestic sewage,
t- commercial and industrial wastes and their products within its own territory, and
WHEREAS, Chapter 341. 11, Minnesota Session Laws of 1933, provides that
before undertaking the construction or operation of any system of sewage disposal for
the District including intercepting sewers, pumping stations, treatment works, and
appurtenances, it shall be the duty of the Board of Trustees of such Sanitary District
to adopt a comprehensive plan and program of procedure and work, for the collection,
treatment, and disposal of sewage and waste materials of said Sanitary District, and
the same may be modified from time to time, with necessary maps, plats, surveys,
and estimates of probable cost of such system for the entire District based upon the
probable needs and requirements of the District and of any adjacent territory likely
TRUSTEES
Yeas Nayes Adopted by the Board '
BASTIS
DILLON
HOYER In favor
Chairman.
NELSON
PETERSON Against
RYLANDER
CHAIRMAN OLSON Corporate Secretary.
P. - RESOLUTION NO.
817 Cont.
MINNEAPOLIS-SAINT PAUL
SANITARY DISTRICT
PRESENTED BY
TRUSTEF DATF
50 /-
to be annexed to such District, down to such time in the future as to the Trustees
shall seem most efficient and economical as well as proper and reasonable, NOW,
THEREFORE, BE IT
RESOLVED, That the Board concur in the recommendations contained in its
Chief Engineer and Superintendent's communication (Board File No. 5104 ) and author-
ize the inauguration of said Program of Research and Investigation (Board. File No 105)
at a cost for the balance of the year 1956 not to exceed Twenty-five Thousand Dollars
($25,000), the cost for the year 1957 not to exceed Thirty-five Thousand Dollars
($35,000) which is to be included in the budget for that year, with costs for succeeding
years to be determined annually and, subject to formal approval by this Board, in-
cluded in the budgets for those subsequent years, and
BE IT RESOLVED FURTHER, Inasmuch as this Program of Research and
Investigation will eventually lead to, and become part of, a capital expansion of this
District's sewage works, the cost of the study will become part of the resultant capital
cost and shall be apportioned between the Cities and the outside areas now and/or
hereafter connected to the sewer systems of the Cities in such fair and equitable manner
as may be determined by the Sanitary District and the Cities, and
BE IT RESOLVED FURTHER, That copies of this Resolution and Board File
Nos. 5104 and 5105 be transmitted to the governing bodies of the Cities and their
respective interested officials,
TRUSTEES
Yeas Nayes Adopted by the Board May 14, 16
x BASTIS
x DILLON
x HOYER 6 In favor R. A. Olson
Absent- NELSON Chairman.
x PETERSON 0 Against
x RYLANDER
x Lawrence Rylander
CHAIRMAN OLSON Corporate Secretary.
Research and Investigation Program - page 4
All of the above would include a consideration of the relative economy
of treating all of the sewage to a limited extent to provide the necess-
ary degree of treatment as compared to treating a portion completely
to the extent of 90 or 95%.
3. Based on present treatment methods followed by subsequent
(C) treatment in stabilization ponds for the removal of BOD,
suspended solids and nutrients. This study should also
include a consideration of nutrient removal in stabilization
ponds following secondary treatment by conventional processes
should algal problems be indicated.
4. A consideration of the effect of stream flow regulation
(C) by present or possible future upriver reservoirs during
critical periods on the degree of treatment requirements.
Augmentation of stream flows for relatively short periods
of time could materially reduce the requirements for
sewage treatment.
5. The investigation of sludge disposal facilities applicable
(C) to the above treatment methods.
C. The Problem of Sewage Service Charges for the Twin Cities
and Metropolitan Area.
1. The possible application of the Joint Committee method to
(C) this problem. This involves charges based on use as well
as on area, front footage, or valuation.
2. Investigation of the effect of the inclusion of strength
(C) of waste in addition to the charges on volume now being
made.
3. An analysis of the problem of the outside areas following
(C) the study of various methods of providing sewerage service
to these areas in the future. The outside areas are utiliz-
ing capacity in the existing sewage work of the District,
the present reproduction cost of which is several times
the original cost of the works. Thus, the reproduction
cost of the existing District works would be approximately
53 million dollars at the cost level of January 1, 1956,
whereas Twin City tax payers and users had to finance
only an original cost of about$11, 500, 000 ($15, 800, 000
less PWA Grant). This will mean that the Twin Cities
will thereby be required to increase the capacity of its
Research and Investigation Program - page 5
works some 5 to 15 years in the future at a cost level which
may be 5 or more times the original cost. Because the
potential for growth from a pollution standpoint is greater
in the outside areas it would appear that the investigation
should include a study of the effect of area charges as well
as volume and strength charges to measure and assess this
capacity for growth. Otherwise, undeveloped property pays
little or nothing toward the cost of providing for the extra
capacity required for its later use. Present users and
particularly those in the Twin Cities would pay an unfair
portion of the total cost of providing service.
D. Miscellaneous Studies.
1. An analysis of population and industrial growth trends in the
(C) Metropolitan area. This investigation would be necessary
(D) in any consideration of expansion of either the intercepting
sewer or the sewage treatment works.
2. The present and potential uses of the Mississippi River in
(C) the Twin Cities and in a stretch of river downstream which
(D) could be considered as affected by the effluent of any type
of sewage treatment plant.
3. .A study of the factors involved in the increasing industrial
(C) load in the metropolitan area and at downstream points, in-
(D) cluding allocation of the pollution-assimilating power of the
river to the various pollution loads entering it at different
points downstream in this area.
May 14, 19 56.
*(U) indicates work to be done by the University of Minnesota.
(D) It ' " " " " " Sanitary District.
(C) 11 " " " " " " Consulting Engineers.
Note: In some phases of the investigation, however, all three
organizations will work cooperatively.
KERWIN L. M ICK. PHONE: VA. 8845 DONALD D. WOZN I AK
Cri lEr ENGINEER AND SUPERINTENDENT ATTORNEY
MINNEAPOLIS - SAINT PAUL SANITARY DISTRICT / .7 -
ic ,r6
P. 0. BOX 3598 CHILDS ROAD .
SAINT PAUL 1 :: MINNESOTA
BOARD OF TRUSTEES
ROBERT A. OLSON. CHAIRMAN. DULUTH LOU IS J. BARTSCHER.
MAYOR ERIC G. HOYER. VICE-CHAIRMAN. MINNEAPOLIS EXECUTIVE SECRETARY
LAWRENCE RYLANDER. CORPORATE SECRETARY. ST. PAUL ADDRESS ALL COMMUNICATIONS
COMMISSIONER ROBERT F. PETERSON. Sr PAUL TO THE SECRETARY UNLESS
MAYOR JOSEPH E. DI LLON, ST. PAUL OTHEROISE REQUESTED
ALDERMAN BYRON F. NELSON, MINNEAPOLIS May 15, 056
ALBERT G. BASTIS, MINNEAPOLIS
The ':;:lty .Coun,:ii
City t..it ....;..-4int 1.?4al
..,;ity Hall and Courtttou-e
:.,:a.int t'Aaal .,..'., .Kirinc4.tota
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Gentlemen.
a .4.110.,: tiri,6 u.i. the oart ot. Irtlateea of thib anitary Oisteict Monday,
iv..ay <.ominkinication (Board iile. 3104) wa.: preLerited by ita Chief
:,:avineer Ti ad :::.-uperintendent, is...el-v.4n i... MiLit., propoein g a t''..co!4,raici; of
• . ear,,,,ii arid Investigation to at di the determination of tature requii.-e •
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• wai,..il are atta‘lieJ ir,t:reto.
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46RO°8