HomeMy WebLinkAboutAGENDA BACKUP 12-07-1978VI. OB
12/7/78
November 29, 1978
MEMORANDUM TO: THE HONORABLE MEMBERS OF THE BOARD OF DIRECTORS
VIA: Roger J. Dolan, General Manager -Chief Engineer
SUBJECT: SUPPLEMENTAL EMERGENCY FUNDING FOR OUTFALL
ISSUE: The condition of the outfall along the east toe of the Acme Fill dump site is
becoming more precarious with movement of the pipe continuing. Plans and
preparations for temporary repairs, for shutdown, for diversion of flow, for relocation,
and for possible litigation must proceed.
BACKGROUND: During or after the Acme Fill Corporation effort to unload part of
the moving garbage slide which displaced the outfall, further movement of the pipeline
occurred at an accelerated rate. We have been consulting with the Regional Water
Quality Control Board about our options should the outfall fail and be taken out of
service. The minimum cost option which they have approved entails channel work, on
site grading and minor structure changes.
We have over - expended the $10,000 emergency fund previously authorized doing
on -site grading, plugging the first serious leak, studying options and making emergency
plans.
RECOMMENDATION: Authorize an additional $100,000 emergency fund to be
expended only as necessary to deal with conditions resulting from the damage to the
outfall from the garbage slide.
WCD:jf
Rec mends ion pproved:
Ro r J. of n
General anager -Chief Engineer
Respectfully submitted,
W. C. Dalton
Deputy General Manager -Chief Engineer
V/7- '/ ,
December 1, 1978
MEMORANDUM FOR: THE HONORABLE MEMBERS OF THE BOARD OF DIRECTORS
VIA: Roger J. Dolan, General Manager -Chief Engineer
SUBJECT: NEW BUSINESS: AUTHORIZE EXECUTION OF QUIT CLAIM DEEDS
AND THEIR RECORDING
No. Grantee Job No. Parcel No. Area Remarks
1 J. A. Poulos, et ux 3154
2 J. Supran, et ux
JSM:WG:sf
Reviewed b
l
W. C. Dalton
Deputy
General Manager -Chief Engineer
2876
VII. NB
2
12/7/78
Misc Danville Easement was created
on Subdivision map.
Replacement easement
granted; see New
Business, Item 1.
5B Orinda Easement was created
in wrong location.
Replacement easement
granted; see New
Business, Item 1.
Respectfully submitted,
4 A/ J
Y McCo Y
Collection System Engineering
and Services Division Manager
4Apoved:
ianager-Chief lan
General Engineer
0 O UTI. N6
3
12/7/78
November, 1978
MEMORANDUM FOR: THE HONORABLE MEMBERS OF THE BOARD OF DIRECTORS
VIA: Roger J. Dolan, General Manager -Chief Engineer
SUBJECT: CONSENT TO JOINT USE OF COUNTY DRAINAGE EASEMENT WITH
C.C.C.S.D. FOR USE AS A SEWER EASEMENT (JOB NO. 3089 -
PARCELS MISC.) ORINDA AREA ( NO COST TO THE DISTRICT)
ISSUE: Mr. Richard J. Mancinelli, owner of Lot 9, Subdivision 3072 has
requested permission to install an 8" sewer main within the existing
County drainage easement.
BACKGROUND: The County has reviewed the sewer plans and they have
indicated they have no objection to our proposed use. There are no
County facilities within the easement area and the County has no present
plans to install any facilities.
The "Consent to Common Use" requires the County and the District to
protect the facilities of the other party whenever maintenance is
performed or during installation of new facilities.
RECOMMENDATION: Approval. Execute document and forward to County.
Respectfully submitted,
�Jll�_4
S. McCoy
Collection System Engineering
and Services Division Manger
JSM:WG:af
Reviewed by:
6JCQS4��
W. C. Dalton
Deputy
General Manager -Chief Engineer
Reco nda?an Ap roved:
Roger D
General Manger -Chief Engineer
V11. N13
4
12/7/78
December 1, 1978
MEMORANDUM FOR: THE HONORABLE MEMBERS OF THE BOARD OF DIRECTORS
VIA: Roger J. Dolan, General Manager-Chief Engineer
SUBJECT: EXECUTE AGREEMENT RELATING TO REAL PROPERTY WITH
HAL W. McCLURE, ET UX, JOB 561 LOCATED AT 251 WALNUT AVENUE,
WALNUT CREEK
ISSUE: The McClures, owners of Lot 3, Tract 2650, desire to construct a
patio cover and concrete deck over a portion of the District's existing
10 feet in width sewer easement.
BACKGROUND: The existing sewer main was constructed in 1959. The
above-mentioned improvements encroach into the District's easement a
maximum of 5.0 feet.
Staff has reviewed the situation and has determined that the above improve-
ments do not interfere with the present use of our sewer, however, if they
should become an interference or cause extra maintenance expense, the
property owner is liable for these added costs to the District.
If the District determines the structure to be harmful or detrimental,
the property owner is required to remove the structure or relocate the
sewer at his own expense.
RECOMMENDATION: Approval, execute "Agreement" and authorize its recording.
Respectfully submitted,
ay McCby
Collection System Engineering
and Services Division Manager
JSM:WG:sf
Reviewed b
W. C. Dalton
Deputy
General Manager -Chief Engineer
Reco ndation Approved:
Roge J. olan
General anager -Chief Engineer
December 1, 1978
MEMORANDUM FOR: THE HONORABLE MEMBERS OF THE BOARD OF DIRECTORS
VIA: Roger J. Dolan, General Manager -Chief Engineer
SUBJECT: EXECUTE AGREEMENT RELATING TO REAL PROPERTY WITH RICHARD
T. STEFFENS, ET UX, JOB 1175, LOCATED AT 3790 QUAIL RIDGE
ROAD, LAFAYETTE.
ISSUE: The Steffens, owners of Lot 15, Tract 331+, desire to maintain a
redwood deck and an equipment pad for a hot tub over a portion of the
District's existing 10 feet in width sewer easement.
BACKGROUND: The existing sewer main was constructed in 1965. The above
improvements encroach Into the District's easement a maximum of 2.8 feet.
Staff has reviewed the situation and has determined that the improvements
do not interfere with the present use of our sewer, however, if they should
become an interference or cause extra maintenance expense, the property
owner is liable for these added costs to the District.
If the District determines the structure to be harmful or detrimental, the
property owner is required to remove the structure or relocate the sewer
at his own expense.
RECOMMENDATION: Approval, execute "Agreement" and authorize its recording.
Respectfully submitted,
+IMc/�
Co�
Collection System Engineering
and Services Division Manager
JMWG:sf
Reviewed by:
W. C. Dalton
Deputy
General Manager -Chief Engineer
VII. NB
5
12/7/78
Approved by:
Roge J. Dolan
General Manager-Chief Engineer
VII. NB
7
12/7/78
November 29, 1978
MEMORANDUM FOR: THE HONORABLE MEMBERS OF THE BOARD OF DIRECTORS
VIA: Roger J. Dolan, General Manager -Chief Engineer
SUBJECT: SEMINAR ON CLEAN WATER GRANT ADMINISTRATION
ISSUE: Staff update on administrative requirements of the Clean Water
Construction Grant Program.
BACKGROUND: Attached is a flyer on the seminar program. You will note
this cost is $165 for 5 employees. We have six top management people
involved in various aspects of this program with their assistants. All
would probably benefit but could not be absent simultaneously from work.
RECOMMENDATION: Authorize agency registration ($165) and attendance
of esignate employees at District expense.
Respectfully submitted,
W. C. Dalton
Deputy
General Manager -Chief Engineer
WCD:jv
Reco endation Ap oved:
L,—
oger . Do n
Gener Manager -Chief Engineer
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VII. NB
11
12/7/78
December 1, 1978
TO: HONORABLE MEMBERS OF THE BOARD OF DIRECTORS
VIA: Roger J. Dolan, General Manager -Chief Engineer
SUBJECT: AUTHORIZE $633,000 FOR THE EVALUATION, ENVIRONMENTAL ANALYSIS,
RIGHTS -OF -WAY ACQUISITION AND DESIGN OF PHASE I FOR TRUNK SEWERS,
WATERSHED 33 NORTH AND SOUTH, WALNUT CREEK TO SAN RAMON
ISSUE: There is a definite need to establish future rights -of -way requirements
and specific locations for watershed trunk sewers from Walnut Creek to San
Ramon. Ultimate service lines may be required in advance of timetables
estimated by previous Brown & Caldwell reports. Areal development and
occupation of convenient and available rights -of -way by other utility agencies
have already effectively reduced alternative -route options of the District.
BACKGROUND: The Brown and Caldwell consultant studies of 1956 and 1966
recognize the need for trunk sewer paralleling for ultimate service. The
Brown & Caldwell timetable for this requirement (1985), has been advanced
due to the accelerated rate of development of the upper San Ramon Valley and
the 1974 Larwin Addition annexation. This annexation added approximately
4,000 acres of tributary area to the District system unaccounted for in the
latest Brown & Caldwell design study.
Since 1974, particular large developments in the San Ramon area have financed
portions of the ultimate service trunk pipeline system. To date, some 22,000
lineal feet of the upper reach of the trunk system has been installed. Approx-
imately 47,000 lineal feet remains to be completed.
Although not developing at the rate of the San Ramon area, the core areas of
Danville, Alamo and Walnut Creek are keeping pace with the growth predictions
of the previous reports and are rapidly becoming totally developed in areas
through which the ultimate parallel trunk sewers must pass.
Existent potential rights -of -way are becoming either highly congested with
other utility facilities -- making future trunk sewer extension installations
most difficult and expensive - -or are being taken out of consideration altogether
because of current and planned developments. The competition for surface and
subsurface rights -of -way among various agencies is evident. The abandonment
of the Southern Pacific Transportation Company's railroad facilities from San
Ramon to Avon has already prompted the City of Walnut Creek and the Flood
Control to propose utilization of the portion of the right -of -way from East
Newell to Rudgear Road, a location we desire for the first section of the trunk
sewer. East Bay MUD is interested in right-of -way for a major water line,
south from Walnut Creek along the abandoned Southern Pacific right -of -way
which is also a potential location for our sewer.
It is not coincidental that the route proposed by the Brown & Caldwell 1956
Report for the ultimate service trunk sewer system parallels the Southern
Pacific right -of -way. It may be the most desirable location for this trunk
system.
Funds are available in the Watershed 33 South account to finance this
proposal for planning, EIR, and Right of Way ($633,000), and the first stage of
construction ($1,078,000 to be subsequently authorized). The actual construc-
tion of the ultimate trunk sewer system from Walnut Creek to San Ramon may be
staged as existing pipeline capacities are exhausted or as funds become avail-
able, but the total ultimate system with respect to environmental impacts and
available and potential rights -of -way and construction costs should be
evaluated and planned for the total watershed. Consideration at this time
should preclude or reduce future disputes over environmental aspects of
several individual and directly related trunk system projects and insure an
established route and rights -of -way for the total system.
The preliminary estimate of each task is as follows:
EIR & CONSULTANTS $85,000
SURVEY & PRELIMINARY DESIGN 20,000
INITIAL STUDY 74,000
RIGHT OF WAY 358,000
DESIGN OF PHASE I 96,000
Total 5633,000
RECOMMENDATION: Authorize $633,000 for the evaluation, the environmental
analysis and required reports, the establishment and acquisition of necessary
rights -of -way from Walnut Creek to San Ramon and the design of trunk sewers
for Phase I from Mt. Diablo Blvd. to Rudgear Rd.
Respectfully submitted,
Lq_��
W. C. Dalton
Deputy
General Manager-Chief Engineer
WCD: sf
cW.1an
ro d:
Ro Gen r -Chief Engineer
CENTRAL CONTRA COSTA SANITARY DISTRICT
VERY PRELIMINARY COST ESTIMATE
JOB NO. WS 33 N S S - SAN RAMON CREEK TO C I TY U
WALNUT CREEK TRUNKLINE
ITEM NO.
QUANTITY
DESCRIPTION
UNIT PRICE
TOTAL
1
7,900 L.F.
4$" Sewer
130
1,027,000
2
31,600 L. F.
36" Sewer
110
3,476,000
3
7,900 L. F.
30" Sewer
85
671,500
SEE ATTACHMENT
OR BREAKDOWN
ACREAGE
BUILDING SITES
UNITS OF ASSESSMENT
REBATE UNITS
JOB WS 33 N S S
SUBTOTAL s5,174,500
CONSTRUCTION CONTINGENCY 5 % 258,500
INCIDENTALS 12 % 621 .000
SEAL COAT
RAW 350,000
EIR 70,000
By R I L
CHKD. BY DATE
SEWERING COST sE,474,ana -..
DATE 11 -14 -78
SHEET NO. 1 OF 1 -
2101 -10.78
WS 33 N 11 -22 -78
THE PRELIMINARY ESTIMATE OF EACH TASK IS AS FOLLOWS:
A. EIR & CONSULTANTS $ 85,000
SURVEY s PRELIM. DESIGN 20,000
INITIAL STUDY 74,000
RIGHT OF WAY 358,000
SUBTOTAL $537,000
B. DESIGN ( TO PROJECT COMPLETION)
PHASE 1 96,000
PHASE 11 131,000
PHASE 111 111,000
PHASE IV 86,000
PHASE V 80,000
SUBTOTAL 504,000
TOTAL INCIDENTALS COST $1,041,000
C. CONSTRUCTION COST
PHASE 1 - 7900 L.F. 48" LINE, MT. DIABLO BLVD TO RUDGER ROAD $1,078,000
PHASE 11 - 12,500 L.F. 36" LINE, RUDGEAR RD TO LUNADA LANE 1,444,000
PHASE III - 10,700 L.F. 36" LINE, LUNADA LN TO DEL AMIGO RD 1,236,000
PHASE IV - 8,400 L.F. 36" LINE, DEL AMIGO RD TO SYCAMORE
VALLEY RD 970,000
PHASE V - 7,900 L.F. 30" LINE, SYCAMORE VALLEY TO SAN
RAMON CREEK 705,000
TOTAL CONSTRUCTION COST $5,433,000
GRAND TOTAL COST OF PROJECT $6,474,000
VII. NB
10
12/7/78
November 30, 1978
MEMORANDUM TO: THE HONORABLE MEMBERS OF THE BOARD OF DIRECTORS
VIA: Roger J. Dolan, General Manager -Chief Engineer
SUBJECT: AUTHORIZE $40,000 FOR THE PREPARATION OF AN ENVIRONMENTAL
ANALYSIS, DESIGN, PLANS AND SPECIFICATIONS FOR 2,500
LINEAL FEET OF PARALLEL TRUNK SEWER LINE IN MORAGA ROAD,
MORAGA, WS 10 WEST
ISSUE: This line is necessary to relieve the currently overloaded
existing 12 -inch trunk sewer and to assure adequate capacity for future
tributary developments within this watershed area.
BACKGROUND- The existing 12 -inch trunk line was installed in 1950 as
part of Main Trunk Section VII. Subsequently, as the watershed area
developed, an 18 -inch trunkline was installed upstream of the now
deficient 12 -inch trunk line.
The preliminary cost estimate is $173,500.
RECOMMENDATION: Approve authorization of 540,000 for the proposed
project.
Respectfully submitted,
W. C. Dalton
Deputy
General Manager -Chief Engineer
WCD:RL:sf
Rec men ation A r ed:
e of
General anag r -Chief Engineer
December 6, 1978
MEMDORANDUM FOR: THE HONORABLE MEMBERS OF THE BOARD OF DIRECTORS
VIA: Roger J. Dolan, General Manager -Chief Engineer
SUBJECT: REQUEST AUTHORIZATION TO ACCEPT LOW BID FROM PARKER -ROBB
CHEVROLET FOR THE PURCHASE OF 1 -1/2 TON TRUCK CAB AND
CHASSIS - $11,875.81
ISSUE: Bids have been received for the purchase of a 1 -1/2 ton cab
and chassis.
BACKGROUND: The original bid for this unit was disallowed because of
errors in the original submittals. We advertised and received new
bids. Parker -Robb Chevrolet was the low bidder at $11,875.81.
RECOMMENDATION: Accept and award bid of $11,875.81 to Parker -Robb
Chevrolet for the purchase of a 1 -1/2 ton truck cab and chassis.
Respectfully submitted,
Robert H. Hinkson
Manager, Collection System Operations
RHH:yb
Recommendation Approved:
Roger . D /ager-&Chie4�f
General Ma Engineer
December 5, 1978
MEMORANDUM FOR: THE HONORABLE MEMBERS OF THE BOARD OF DIRECTORS
VIA: Roger J. Dolan, General Manager -Chief Engineer
SUBJECT: AUTHORIZE $5,716.87 TO REPLACE CAR #39
ISSUE: Car #39, a 1970 Impala has been damaged to the extent that it
will cost $879.99 to repair it. In undamaged, good condition, it has
a value of $400.00. It's worth $100.00 now; it can be replaced for
$5,716.87.
BACKGROUND: This unit was delivered to the District corpor on yard
Tuesday morning (November 20). It had apparently been in a/ lion
with truck #58 resulting in severe damage to the right front fender,
lights, grill, bumper and hood. Low repair estimate using some second
hand parts is $879.99. Since July, 1978, we have made $732.69 worth
of repairs and improvements to #39. If we repair it, we will have
invested $1,612.68 in this vehicle in 6 months. I might add that #39
was up for replacement this fiscal year but held over until 1979 -1980.
The question is to repair it or replace it. A new 4 door compact
will cost $5,716.87 and seems the better investment at this time. We
would be lucky to get $100.00 out of this car in another year even if
it is in good shape. With the heavy use it's getting (7,084 miles
since July, a total 81,684 miles overall), we can anticipate additional
medium to heavy repair costs.
RECOMMENDATION: Authorize $5,716.87 to replace car #39.
Re pectfully submitted,
Robert H. Hinkson
Manager, Collection System Operations
RHH:yb
Reco endati AU roved.
Roger J. D an
Gene 1 Manager -Chief Engineer
VII. NB
8
12/7/78
December 5, 1976
MEMORANDUM TO: HONORABLE MEMBERS OF THE BOARD OF DIRECTORS
VIA: Roger J. Dolan, General Manager -Chief Engineer
SUBJECT: AUTHORIZATION OF $2,200 FROM THE FIELD MODIFICATION
APPROVAL OF NOVEMBER 22, 1977 FOR THE PURCHASE AND
INSTALLATION OF A COMMUNICATIONS RECORDING SYSTEM
Issue: A permanent record is required of operations communications.
Background: The computer control system of the treatment plant requires
extensive use and reliance on the treatment plant's radio communication
system. All real -time operational changes and instructions are communi-
cated from the computer room and back through the radio system. In the
event of emergency operations or life support conditions, the radio is
the first line of communication.
During the Contractor's operation and testing of the furnace system,
he will also be utilizing the radio system to communicate operational
changes to the computer room.
In order to provide a permanent record of the radio communications
between Operations and Contractor to Operations, a radio communications
logging unit has been installed utilizing the authorized construction fund.
Recommendation: Authorization of $2,200 from the field modification approval
of November 22, 1977 for the purchase and installation of one communications
logging system and reimbursement to the fund.
DGN:mg
Recom ends inn Approved:
og r J. Dolan
General Manager -Chief Engineer
Respectfully submitted,
D. G. Niles
Manager, Plant Operations
Total field modification
expenditures to date $57,550
VII. NB
0 6
12/7/78
December 5,
1978
MEMORANDUM FOR:
THE HONORABLE MEMBERS OF THE BOARD OF DIRECTORS
VIA:
Roger J. Dolan, General Manager -Chief Engineer
SUBJECT:
AUTHORIZATION FOR PARCELS
78 -58 DANVILLE AREA, P.A. 78 -59
LAFAYETTE AREA, P.A. 78 -60
WALNUT CREEK AREA, P.A. 78 -61
DANVILLE AREA, AND P.A. 78
-62 MARTINEZ AREA to be included
in pending annexation to the
District.
\ot-
Board Action
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78 -58 Danv.
Ye .77
RONALD S. NUNES
One single family house to
688 DANVILLE BLVD
be constructed on this par
el.
DANVILLE, CA
Negative declaration to
200 - 100 -03
be prepared by Count
78-59 Laf.
Yes 5.16
ROBERT AVALON, ET UX
No present plans to develo
.
966 Bollinger Canyon Rd.
Parcel has a possible 5
oraga, CA
building sites.
167- 080 -05
2.02
R. M. AVALON E DENAE AVALON
Owners plan to build two
66 Bollinger Canyon Rd.
houses on this parcel.
oraga, CA
167 - 080 -03
78 -60 W.C.
Yes 1.13
JOHN W. COPELAND
Existing house on a failing
419 Valley Vista Rd.
septic tank. Owner wants
Walnut Creek, CA
to connect to sewer.
135-050 -013
78-61 Danv. Yes 4.102
MARJORY L. GALVIN
21 Property owners of the
3511 Blackhawk Rd.
Blackhawk Road Homeowners
Danville, CA
Association have petitioned
203 - 160 -01
for annexation.
It " i'*'I.8
JOHN R. WARD
Reasons for annexation according to
3555 Blackhawk Rd
the Association are:
Danville, CA
203 - 160 -02
1. Sewer main is being installed
1.8
JOHN W_ KURY, ET UX
within Blackhawk Road, if they
3575 Blackhawk Rd
have problems with their existing
Danville, CA
septic tanks they would be forced
203-160 -03
to connect to CCCSD system.
1.07
WILLIAM H. CLEMENS, ET UX
2. If they ever divide their properties
,3761 Blackhawk Rd
they will have to connect to CCCSD
Danville, CA
system.
203 - 171 -01 & 04
3. Annexation now will freeze rate at
1.3
FREDERICK G. BREAK
$800.00 per acre.
'
3645 Blackhawk Rd.
Danville, CA
1
203- 171 -03
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0 � adt at
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78 -61 Danv Yes 2.0
11 11 2.0
11 1.25
5.0
6.50
0
2.0
2.5
2.69
ROBERT BOZEK
3637 Blackhawk Rd.
Danville, CA
203- 171 -09
ROBERT W. HOLLOWAY
3611 Blackhawk Rd
Danville, CA
203 - 171 -11
CYNTHIA L. OVERMIRE
3650 Blackhawk Rd.
Danville, CA
203- 172 -06
DENNIS FARNDEN
3745 Blackhawk Rd.
Danville, CA
203 - 180 -03
DAVID L. BATTAGLINI,
3755 Blackhawk Rd
Danville, CA
203 - 180 -05
MALCOLM A. GOMPERTZ
3742 Blackhawk Rd
Danville, CA
203 - 180 -07
RICHARD C. VOLBERG
101 Blackhawk Lane
Danville, CA
203 - 190 -01
Wayne L. Bianco
141 Blackhawk Rd
Danville, CA
203 - 190-02
0. A. ESTENSON, ET U
180 Blackhawk Lane
Danville, CA
203 - 190 -04
UX
Board Action
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Board Action
e5y e, `I-y titi0 �
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O��Paa<Qa�G Qe < Tl \ Je \o t\�a
-61
Danv.
Yes
2.10
RICHARD M. VAUGHAN
170 Blackhawk Lane
Danville, CA
203 - 190 -05
2.0
ALBERT G. NEISLER
100 Blackhawk Lane
Danville, CA
203- 190 -o6
1.26
DALE L. HOLM, ET UX
3307 CAMINO Tassajara
Danville, CA
203 - 200-01
1.25
ROBERT J. ALDRICH
3325 Camino Tassajara
Danville, CA
203 - 200 -03
1.3
DONALD L. BRUNNER, ET UX
3301 Tassajara Rd.
Danville, CA
203 - 200 -04
12.4
DONALD D. JOURIS, ET UX
3871 Blackhawk Rd
Danville, CA
203 - 200 -05
-62
Mtz
Yes
1
JAMES E. DAVIS
Owner wants to construct
2129 Scenic Avenue
one house on property. This
Martinez, CA
parcel was just annexed to
375 - 090 -13
the City of Martinez.
RECOMMENDATION: Authorization for Parcels 78 -58 through 78 -62 to be included
in pending annexation to the District.
WCD:WG:sf
A Roqer ndat' p o. D an
Respectfully submitted,
W. C. Dalton
Deputy
General Manager -Chief Engineer
VII. NB
9
12/7/78
December 1, 1978
MEMORANDUM FOR: HONORABLE MEMBERS OF THE BOARD OF DIRECTORS
VIA: Roger J. Dolan, General Manager -Chief Engineer
SUBJECT: AUTHORIZATION OF $12,000 FOR THE PURCHASE OF THREE
AUTOMATIC LIQUID SAMPLERS PACED UPON PROPORTIONAL
FLOW
Issue: NPDES requirements dictate that automatic sampling must take place
paced to proportional flow for the raw sewage and final effluent of the
treatment plant.
Background: In order to meet the NPDES requirements, the District had
planned to place these automatic liquid samplers in service under contract
58, Phase I. Due to the delay in this contract, it will be necessary to
purchase these units early and place them into immediate service. One
unit will be placed before prechlorination as the raw influent enters the
plant. Another unit will be placed after all treatment has been given to
the final effluent, probably at the northern boundary of the treatment
plant property. The third unit is needed for proper process control at
locations as later needs may require. The third unit may also be used in
the event that the final effluent has to be discharged into other locations
than the present outfall line.
Recommendation: Authorization of $12,000 for the purchase of three auto-
matic liquid effluent samplers paced on proportional flow.
DGN:mg
Recommendation Approved:
Age . D an &&"'
General Manager -Chief Engineer
Respectfully submitted,
�. Niles
Manager, Plant Operations
0 0
Decmkber 4, 1978
MEMIDRANDUM TO: D. G. Niles, Manager, Plant Operations
FROM: Bhupinder Dhaliwal, Laboratory Superintendent
SUBJECT: CCNTINUC3TJS A OIATIC SAMPLING DEVICES
The District NPDES permit 0037648, order rnuTber 74 -95, part A,
column C, defines a composite sample ".....sample composed of individual
grab samples mixed in proportions varying not more than plus or
minus 5% from the instantaneous rate of flow corresponding to each
grab sample collected at regular intervals not greater than one hour
or collected by the use of continuous automatic sampling devices.... ".
The District does not have, except one sampler, automatic
sampling devices. In order to meet the above definition, the District's
operations staff follows a manual, tedious and expensive way of sampling.
The operators grab the samples from the influent and effluent channels
every hour and canposit�! according to the flaw at the sampling time.
This operation costs the District approximately 2900 man hours per
year. Based upon the operator's average daily wage rate, the total
expenses that the District incurs through this manual sampling
procedure codes out to be approximately $25,000 per year.
Taking into account this heavy expense, it is recommended that
the District should purchase at least three flow proportional ccmposite
samplers at an approximately $120000 cost, and thus save significantly
in the long run. The available literature on caaposite samplers
is attached.
BD :db Aupder Dhaliwal
Laboratory Superintendent
cc: Jim Johnson