HomeMy WebLinkAbout1986-01-28; City Council; 8499; Change to acceptable heavy metal concentration/••
CI1 OF CARLSBAD — AGEND BILL
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MTG. 1/28/86
DEPT. U/M
TITI C-LHANGrj ID ACLhrlABLh HbAVi MblAL
CONCENTRATION IN CITY SEWERS
DEPT. HD. iH^r
CITY ATTY\/A?^
CITY MGR. <^-
RECOMMENDED ACTION:
Introduce Ordinance No. ~Jt>(*1 which modifies approved heavy
metal concentrations to bring the city ordinance into conformity
with the authorized concentrations of the five other JAC
members .
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ITEM EXPLANATION;
The city has adopted ordinances establishing heavy metal limits
for industrial waste discharges. The limits adopted were based
on EPA proposed regulations which were subsequently modified.
Carlsbad had to move quickly at the time of adoption because
of a heavy metal discharge at that time. Carlsbad ordinance
was never modified to reflect the EPA rules, although the other
five JAC agencies when adopting the rules, did adopt the final
regulations. The result is that Carlsbads heavy metals limits
are not consistent with the other five agencies. This
inconsistency results in difficulty for the environmental
engineers which monitor the system and could result in an
enforcement problem for Carlsbad since our limits are different
from but not necessarily more strict than the EPA rules and
the other agencies using Encina. Carlsbad could be obligated
to prove that our regulations are necessary to meet unique
circumstances which could be most difficult in view of the
fact that the other five agencies are using the same facilities,
The industrial waste discharge program is monitored by environ-
mental engineers from Encina and from the County (Buena line
which is owned by Buena Sanitation District). Enforcement is
by Carlsbad through our ordinances.
The EPA standard that is being recommended is a composite grab
sample, which means that the aggregate heavy metals count can
not exceed 5mg/liter for a single grab sample or 2mg/liter over
a 24 hour period. The Carlsbad standard sets specific limits
on 10 elements, which if exceeded is a violation, whereas the
aggregate limit would not have been exceeded. This change will
bring Carlsbad ordinance into consistency with the other JAC
members. The minutes of the November JAC meeting were the
matter was discussed are attached.
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FISCAL IMPACT;
The change in the standard will have no direct cost impacts,
however overall industrial waste sampling and enforcement may
result in cost avoidance or some cost reduction. The indirect
cost impact cannot be determined, although it should result
in cost decreases due to standardization and simplification.
OO
EXHIBITS;
A. JAC minute excerpts and JAG agenda item,
B. Ordinance No.
JOINT ADVISORY COMM .EE MEETING
NOVEMBER 27, 1985
2. The maximum average daily flow from Oceanside will not exceed 1.2 MGD or a
peak wet weather flow of 3.0 MGD (1.2 MGD x 2.5).
3. All flows must originate in the Buena Vista Creek and Agua Hedionda Basins
and Vista's capacity rights in Units B through J will be used to accomodate
the fldw.
4. Vista will be responsible for payment of the additional treatment costs, any
extraordinary costs; and that the sewage meets all requirements of Vista's
sewer use ordinances.
5. Vista will report monthly to Encina the number of Oceanside EDU's
connected.
Mrs. Geiselhart asked if this is a permanent long range agreement. Mr.
Graff replied the agreement is temporary.
Mrs. Rutherford asked if the emergency is for Oceanside's present overflow,
and if new construction would continue to be built. Mr. Graff replied
during this interim period the area would continue to be developed. Mr.
Graff stated that there is an existing (1980) agreement between Oceanside
and' Vista that allows a gallon for gallon exchange. Also a revised per-
manent agreement for full transfer of flow out of this service area is
expected to be brought to JAC by Vista in January, 1986.
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Mrs. McDaniel moved JAC approve the 31st Supplement and recommended its
adoption by the member agencies. Seconded by Mrs. Casler the motion carried
unanimously.
7. ENCINA PRETREATMENT REPORT
Mr. Graff reported that meetings were conducted with the six member agencies
to review the industrial waste program.
Mr. Graff stated to keep uniformity among the member agencies and to avoid
confusion among industrial dischargers, it is recommended that the City of
Carlsbad make some changes in their metal limits. Mr. Graff stated the
issue would be discussed in further detail with Carlsbad's staff.
Mr. Mahr commented that he agreed that there should be uniformity among ail
six member agencies and although this particular issue involves the City of
Carlsbad, in the future it could be one of the other agencies.
Mrs. Casler stated the City approved its original tougher standards to
address existing industrial problems at the time and the recommendation is
a relaxation.
Mr. Graff added that the whole subject of industrial wastes and standards
is dynamic and additional recommended changes are anticipated.
8. EXPENDITURE OF CONTINGENCY FUNDS - 48" CONCRETE PLUG
Mr. Graff reported that this was a project identified in the Carollo
Facility Plan. Mr. Graff gave a brief summary of the status of the project.
3
ENCINA WATER POLLUTION CONTROL FACILITY
6200 Avenida Encinas
Carlsbad, CA 92008-0171
Telephones (619) 438-3941
(619) 438-3954
November 19, 1985
Ref: 2B.1268
TO: Joint Advisory Committee (JAC) Members
SUBJECT: Industrial Waste Review
The Encina Industrial Waste Pretreatment Program review was established as a FY
86 Goal for the following reasons:
Prevention of plant upsets resulting in odors, non-compliance with
NPDES Permit
Maintenance of sludge quality to facilitate disposal/reuse options
Protection of receiving water environment
Compliance with EPA/State requirements for an effective program
Preserve Encina 301(h) Waiver and assure extension beyond December,
1989
The review consisted of meetings between Encina staff and individual member
agency staffs. Discussions were also held with the Technical Advisory Committee
(TAC). As a result of the review it is:
RECOMMENDED
The City of Carlsbad amend their sewer use ordinances to change their heavy
metal limits from the individual limits to 2.0 mg/1 and 5.0 mg/1 total heavy
metals for composite and grab samples, respectively.
DISCUSSION
Each of the six agencies has its own sewer use ordinance, which contains provi-
sions for controlling discharges to the local sewer, and ultimately to Encina.
In comparing the different ordinances, the major inconsistency is with heavy
metal limits (see attached table).
Carlsbad is the only agency that does not have limits of 2.0 mg/1 and 5.0 mg/1
total heavy metals (composite and grab sample). These metals include arsenic,
cadmium, copper, lead, mercury, nickel, selenium, silver, chromium, and zinc.
Uniformity is recommended to avoid confusion among the industrial dischargers.
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NOW SERVING THE CITY OF VISTA, CITY OF CARLSBAD, BUENA SANITATION DISTRICT, SAN MARCOS COUNTY WATER DISTRICT,
LEUCADIA COUNTY WATER DISTRICT AND ENCINITAS SANITARY DISTRICT
Joint Advisory Committee
Subject: Industrial Waste Review
November 19, 1985
Page 2
At the individual meetings with the member agencies the need for exchange of
information was stressed. To foster this idea it was agreed to hold a quarterly
meeting at Encina of the Industrial Waste (IW) Representatives from the
agencies.
Other items discussed are shown on the attached agenda sheet.
Also as a result of the review all member agencies agreed to enforce the
Categorical Pretreatment Standards as required by the Federal EPA regulations.
*Each standard is published separately by EPA, and contains limits for pollutants
commonly discharged by the specific industrial category. In most cases our
local limits are more strict, but not in all cases. The standards also contain
reporting requirements.
Very truly yours,
RichardW. Graff
General Manager
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Attachments
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ENCINA WATER POLLUTION CONTROL FACILITY
6200 Avenida Encinas, Carlsbad, CA 92008-0171 (619) 438-3941, (619) 438-3954
Serving North
San Dietto County
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ORDINANCE NO. 7069
AN ORDINANCE OF THE CITY COUNCIL OF THE CITY
OF CARLSBAD, CALIFORNIA, AMENDING TITLE 13,
CHAPTER 13.04 OF THE CARLSBAD MUNICIPAL CODE
BY THE AMENDMENT OF SECTION 13.04.050 (f)(14)
TO ESTABLISH LIMITS FOR DISCHARGE OF HEAVY METAL
TO THE CITY SEWER SYSTEM.
The City Council of the City of Carlsbad, California
does ordain that Title 13, Chapter 13.04 of the Carlsbad
Municipal Code is amended by the amendment of Section
13.04.050 (f)(14) to read as follows:
13.04.050 (f)(14) Water or wastes containing heavy
metals in excess of:
2.0 mg/1 for a 24-hour composite sample, or
5.0 mg/1 maximum for a grab sample.
EFFECTIVE DATE: This Ordinance shall be effective
thirty days after its adoption and the City Clerk shall
certify to the adoption of this ordinance and cause it to be
published at least once in the Carlsbad Journal within
fifteen days after its adoption.
INTRODUCED AND FIRST READ at a regular meeting of the
Carlsbad City Council held on the 28th day of
January 1986> and thereafter.
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PASSED AND ADOPTED at a regular meeting of said City
Council held on the 4th day of February , 1986, by
the following vote, to wit:
AYES: Council Members Lewis, Kulchin, Chick and Pettine
NOES: None
ABSENT: Council Member
MfiRT H. CASIJER, Mayor
CLAUDE A. LEWIS, Mayor Pro Tern
ATTEST:
^fcl^A^U~—tALETHA L. RAUTEJNKKATTz;(Jity uyerk
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(SEAL)
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