Peninsula Cities MOU Machado Lake Nutrient TMDL (Monitoring Plan) MEMORANDUM OF AGREEMENT
MACHADO LAKE NUTRIENT TMDL
(MONITORING PLAN)
This Memorandum of Agreement ("Agreement") is made and entered into by and
between the public entities (the "Responsible Jurisdictions") whose names are set
forth on Exhibit A, attached hereto and incorporated herein by this reference. The
Responsible Jurisdictions are sometimes referred to herein singularly as "Party" and
collectively as "Parties."
WITNESSETH:
The Parties hereto do agree as follows:
Section 1. Recitals.
This agreement is made and entered into with respect to the following facts:
A. The federal Clean Water Act ("CWA") requires the California Regional Water
Quality Control Board, Los Angeles Region ("Regional Board") to develop water
quality standards which include beneficial use designations and criteria to protect
beneficial uses for each water body found within its region.
B. Section 303(d) of the CWA requires, among other things, that states identify and
prepare a list of water bodies that do not meet water quality standards. Section
303(d) further requires that states establish load and waste load allocations, or a
total maximum daily load ("TMDL"), for each water body that will ensure
attainment of water quality standards and then to incorporate those allocations
into their water quality control plans.
C. Machado Lake was listed on California's 1998 Section 303(d) list, due to
impairments for: Eutrophic conditions, Algae, Ammonia and Odors (collectively
referred to as Nutrients).
D. On May 1, 2008, the Regional Board adopted Resolution No. 2008-006
("Resolution 2008-006") establishing the limit for the Total Maximum Daily Loads
for nutrients for Machado Lake ("Nutrient TMDL"), a true and correct copy of
which is attached as Exhibit D hereto and incorporated herein.
E. The Nutrient TMDL became effective on March 11, 2009.
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F. Resolution 2008-006 does not preclude responsible jurisdictions from working
together as a group to meet the requirements of the Implementation Schedule
set forth in Table 7-29.2 of Attachment A to Resolution No. R08-006.
G. Resolution 2008-006 identifies the cities of Palos Verdes Estates, Rancho Palos
Verdes, Rolling Hills, and Rolling Hills Estates (Parties) as among the 11
Municipal Separate Storm Sewer System (MS4) Permittees that are responsible
for discharges to Machado Lake.
H. The Implementation Schedule set forth in Table 7-29.2 of Attachment A to
resolution No. R08 006 provides for a monitoring and reporting program plan to
be submitted to the regional Board by March 11, 2010 for approval.
I. On March 10, 2010, the Parties jointly submitted the Palos Verdes Peninsula
Coordinated Monitoring Plan in Compliance with the Machado Lake Nutrient
Total Maximum Daily Load (Nutrient Monitoring Plan) for review and approval by
the Regional Board to meet Task 5 of the Implementation Schedule set forth in
Table 7-29.2 of Attachment A to Resolution No. R08-006.
J. On December 14, 2010 the Regional Board issued a letter conditionally
approving the Nutrient Monitoring Plan with specified revisions to be made by
February 1, 2011. A true copy of the revised and approved Nutrient Monitoring
Plan is provided as Exhibit E.
K. The Parties identified herein will enter into this Agreement to collectively initiate
and implement the approved Nutrient Monitoring Plan activities no later than sixty
(60) days after approval of said plan by the Executive Officer of the Regional
Board.
L. To facilitate a coordinated and cost-effective program as required under the
Nutrient TMDL, the Parties have agreed to contribute funds to Rolling Hills
Estates (RHE), who will contract with Consultant(s) and a Contract Laboratory for
the performance of monitoring services to be conducted in accordance with the
approved Nutrient Monitoring Plan. The Parties agree that the formula set forth
in Exhibit "B" will be used to calculate each of the Parties' share of financial
contribution to carry out the Nutrient Monitoring Plan.
M. The Parties further desire to set forth their respective duties and obligations with
respect to carrying out the monitoring plan and to provide RHE with the
necessary authority to conduct sampling at the monitoring site(s) identified in the
Nutrient Monitoring Plan.
NOW, THEREFORE, in consideration of the mutual benefit and promises made herein,
the Parties do hereby agree as follows:
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Section 2. Purpose of MOA.
2.1 Purpose of MOA.
(a) The Parties agree that the purpose of this Agreement is to jointly
implement a monitoring and reporting plan consistent with the provisions of the
approved Nutrient Monitoring Plan.
(b) The Parties also agree that an additional purpose of this Agreement
is to memorialize the Parties' willingness to coordinate the payment and performance of
monitoring services that are consistent with the provisions of the Nutrient Monitoring
Plan and the Nutrient TMDL.
(c) The parties recognize and acknowledge that this Agreement and
the work being accomplished hereunder are being undertaken to comply with the
mandates of the Nutrient TMDL. This Agreement is entered into for the development of
a cost effective and a well-coordinated Nutrient Monitoring Plan consistent with the
provisions of the Nutrient TMDL, to establish the roles of the Parties to conduct
monitoring identified in the Nutrient Monitoring Plan, and to address the cost sharing
among the Parties for the retention of consultant(s) and state certified contract
laboratory by RHE to carry out the Nutrient Monitoring Plan that is consistent with the
goals of the Nutrient TMDL.
2.2 Non-Waiver of Positions.
Nothing in this MOA, nor the Work, nor any activity approved or carried out by the
Parties hereunder, shall be interpreted as a waiver of the position that the efforts to be
undertaken by the Parties are subject to the "Maximum Extent Practicable" standard set
forth in the Clean Water Act (33 U.S.C. Section 1251 et seq.) or any position by any of
the parties that one or more of the TMDL standards or requirements violated the Clean
Water Act provisions or constitute unfunded state mandates.
Section 3. Term.
The Term of this Agreement shall commence upon execution by all parties to this
Agreement and shall continue in full force and effect through September 11, 2018, the
completion of the implementation period for MS4 permittees. Within the Term of this
Agreement, a party may withdraw from this agreement in accordance with the
provisions of Section 7.8 of this Agreement, below.
Section 4. Mutual Obligations.
The Parties hereto acknowledge and agree that, they will undertake the following in
order to implement provisions of the Nutrient TMDL:
A. In accordance with the schedule set forth in Resolution No. 2006-008, the Parties
have elected to jointly carry out and fund a monitoring and reporting plan
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consistent with the requirements of the Nutrient TMDL insofar as it addresses
discharges from the Parties' respective jurisdictions and except for the exclusions
contained in Section 6. The monitoring and reporting cost estimate is set forth in
Exhibit C.
B. In accordance with the Nutrient Monitoring Plan as conditionally approved by the
Executive Officer of the Regional Board, to advise and comment upon RHE's
recommendation to select a qualified and experienced consultant(s) and state
certified laboratory(s) to conduct the monitoring and analytical laboratory work.
C. Prepare and submit annual monitoring reports as are required by the Regional
Board Resolution No. 2006-008.
Section 5. Contracting and Funding
5.1 Sharing of Costs.
(a) The Parties hereby agree to share the cost of performing the work
described in the Nutrient Monitoring Plan in accordance with the following allocation:
(1) Fixed initial and annual costs, such as costs for preparation of
the TMDL's required Health and Safety Plan or a local traffic control
plan, and preparing and submitting annual reports and supporting
laboratory data, will be shared based on the percentage of land
area within the jurisdictional boundaries of each Party that is within
the land area of the Machado Lake Watershed as delineated in the
Nutrient Monitoring Plan and summarized in Exhibit B. The
breakdown of land area by Party and the exact share for each Party
for initial and annual estimated fixed costs is set forth in Exhibit B,
attached hereto and incorporated herein by this reference;
(2) Costs for field observation, monitoring, sampling and
laboratory analysis will be shared based on the percentage of
land area within the jurisdictional boundaries of each Party that is
within the sub-drainage area tributary to a particular
monitoring/observation site as delineated in the Nutrient Monitoring
Plan. These monitoring costs are summarized in Exhibit C with the
exception of costs associated with Source Tracking Monitoring
Investigations which are outside the scope of this Agreement as
discussed further in Section 6. The breakdown of land area by
Party and the exact share for each Party for estimated annual
monitoring costs for each monitoring/observation site is set forth in
Exhibit C and attached hereto and incorporated herein by this
reference.
(b) All Parties agree, except for additional costs that may be incurred
as set forth in Section 6, that the total cost associated with the Agreement, including the
review and summarization of the data contained within the monitoring reports and
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quality assurance management activities to verify conformance to the provisions of the
Nutrient Monitoring Plan, shall not exceed $65,000 per year and no party shall be
required to expend more than its respective percentage share of $65,000, as
determined in accordance with Exhibits B and C, unless express written consent is
obtained from all Parties to amend this Agreement to increase the total authorized
annual cost.
(c) The Parties agree that Rolling Hills Estates (RHE) will contract with
a consultant(s) and state certified contract laboratory to assist in carrying out the
Nutrient Monitoring Plan. RHE will consult with the party representatives in the selection
of a qualified and experienced consultant(s) and state certified laboratory(s) to conduct
the monitoring. RHE's contract with the consultant(s) shall incorporate RHE's
contracting requirements and policies. The contract shall recite, however, that while it is
for the benefit of all of the Parties, the consulting agency shall look solely to RHE for
payment.
(d) RHE shall be responsible for coordinating the activities with the
hired consultant(s) to ensure that the Nutrient Monitoring Plan and related deliverables,
to be specified in a Scope of Work agreed upon by the Parties in the manner provided
herein, are delivered on time and within budget. All work product shall be compiled and
sent to the Parties annually either in written or in an electronic format agreed upon by
the Parties.
(e) Any funding arrangement reached by the Parties shall apply to the
work set forth in Section 4, above, but shall not extend to any source control activities,
as defined in the MS4 Permit or necessary to achieve waste load allocations, which
shall be the responsibility of the individual agency in which the source is located.
5.2 Duties and Obligations of Responsible Agencies.
Each Party hereby agrees:
(a) To provide sufficient funds to cover its share of the costs as seen in
Exhibits B and C to perform the services identified in the Nutrient Monitoring Plan.
(b) Within thirty (30) days of the Effective Date of this Agreement and
annually thereafter, RHE will invoice each Party for its share of the estimated costs for
performing the services identified in the Nutrient Monitoring Plan as approved by the
Regional Board. Each Party shall deposit its funds with RHE within 45 days of receipt
of the written invoice. If the Party's actual share of costs exceeds the amount the Party
deposited with RHE, the Party shall deposit any additional funds necessary to cover its
annual share within forty-five (45) days of receipt of a written invoice from RHE for such
additional funds.
(c) To promptly review and approve draft reports or monitoring data
produced in accordance with the Nutrient Monitoring Plan and any changes or
amendments thereto in accordance with the deadlines established by RHE to comply
with the deadlines set by the Regional Board.
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(d) To meet and confer with RHE and other Parties as necessary to
ensure the orderly implementation of the Nutrient Monitoring Plan.
(e) To provide plans and reports of any source tracking investigations
conducted in accordance with Section 6.1 to be attached as appendices to the annual
reports of the Nutrient Monitoring Plan as required in the Regional Board's conditional
approval of the Nutrient Monitoring Plan.
5.3 Authority of Rolling Hills Estates.
RHE is hereby authorized to take the following actions to implement and carry out this
Agreement:
(a) To act as lead agency by retaining consultants and state certified
laboratories to assist the Parties with implementation of the Nutrient Monitoring Plan.
(b) To submit in a timely manner the annual reports of the Nutrient
Monitoring Plan to the Regional Board.
(c) To coordinate the timely review and approval of the draft monitoring
reports, and provide a reasonable time for review and comment by the appropriate
officials for each Party, and any changes or revisions to the reports thereto. RHE shall
ensure that the Consultant retained to prepare the annual report will circulate a draft of
the proposed annual report to all other Parties at least ten (10) working days before the
due date of the final report. RHE and Consultant shall review and consider comments
submitted by any other Party for incorporation into to the draft annual report.
(d) To provide invoices to each Party within 30 days of the beginning of
each annual monitoring cycle and a request for prompt remittance of its respective
share in accordance with Exhibits B and C of the estimated annual costs for performing
the services identified in the Nutrient Monitoring Plan.
(e) To establish a separate account to be used for the sole purpose of
administering the funds for this Agreement.
(f) To provide an annual accounting of revenue and expenditures to
each Party within thirty (30) days of the close of the annual monitoring cycle. If any
Party's deposit required by subsection 5.2 (b) of this Section exceeds its actual share of
the annual costs of monitoring and reporting, RHE shall credit the difference against the
Party's estimated annual share of the costs for the upcoming yearly monitoring cycle
unless the Party has withdrawn from the Agreement as provided in Section 7 herein, in
which case RHE shall refund the difference to the Party. For the final year of the MOU,
any amount exceeding an agency's actual share of the annual costs of monitoring and
reporting shall be returned to the agency. Rolling Hills Estates will conduct a final
accounting and refund any such amount to the appropriate agency within 120 days of
the conclusion of the term of this MOU.
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(g) To provide to the Los Angeles Regional Water Quality Control
Board an annual report of the prior annual monitoring cycle performance under the
Agreement. Said summary shall, at a minimum, show:
(1) the location and result of water samples including any samples
exceeding the Interim Waste Load Allocations; and
(2) documentation of changes and refinements to the Nutrient
Monitoring Plan based on the results of the monitoring data.
Section 6. Separate Jurisdictional Responsibilities.
Any violations disclosed by the Monitoring Plan shall be handled in accordance with this
Section 6.
6.1 Source Tracking Monitoring Investigation.
If the Parties or Regional Board determine that a tributary area upstream of a Tier 1 or
Tier 2 monitoring location as defined in the Nutrient Monitoring Plan is exceeding interim
waste load allocations, the individual jurisdictions tributary or upgradient to that
monitoring location shall initiate a source tracking monitoring investigation in
accordance with Section 2.3 of the Nutrient Monitoring Plan to specifically identify the
problem. The jurisdiction(s) that is (are) identified through the source tracking
monitoring as being the source of the problem shall be responsible for further
investigative and corrective costs. Any source tracking monitoring investigations and
corrective activities are outside the scope of this Agreement and the tributary
jurisdictions are responsible for independently initiating, planning, conducting, reporting
and paying for those activities.
6.2 Receiving Waters Limitations Compliance.
The responsible jurisdictions shall be individually responsible for complying with the
Receiving Waters Limitation Compliance reporting provisions of the Municipal
Stormwater Permit in whatever manner that jurisdiction determines is appropriate. The
City of Rolling Hills Estates is not responsible for preparing the Receiving Waters
Limitation Compliance report on behalf of any other responsible jurisdiction, whether
party to this Agreement or not.
Section 7. General Provisions
7.1 Notices.
Any notices, bills, invoices, or reports relating to this Agreement, and any request,
demand, statement or other communication required or permitted hereunder shall be in
writing and shall be delivered to the Representatives of the Parties at the addresses set
forth in Exhibit A attached hereto. A notice shall be deemed to have been received on
(a) the day of delivery, if delivered by hand during regular business hours or by
confirmed facsimile during regular business hours; or (b) on the third business day
following deposit in the United States mail, postage prepaid to the addresses set forth in
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Exhibit A attached hereto.
7.2 Relationship of the Parties.
The Parties are, and shall at all times remain as to each other, wholly independent
entities. No Party to this Agreement shall have power to incur any debt, obligation, or
liability on behalf of any other Party or otherwise act as an agent of any other Party
except as expressly provided to the contrary by this Agreement. No Party shall, at any
time, or in any manner, represent that it or any of its officers, agents or employees are
in any manner employees of any other Party to this Agreement.
7.3 Administration.
For the purposes of this Agreement, the Parties hereby designate as their respective
Party Representatives the persons set forth in Exhibit A. The designated Party
Representatives, or their respective designees, shall administer the terms and
conditions of this Agreement on behalf of their respective Party.
7.4 Cooperation; Further Acts.
The Parties shall cooperate fully with one another, and shall take any additional acts or
sign any additional documents as may be necessary, appropriate or convenient to attain
the purposes of this Agreement.
7.5 Amendments.
This Agreement may be amended by all the members of the Parties, provided that the
terms of any proposed amendment shall be transmitted in writing to the representatives
of the parties at least ten (10) business days prior to the date of a scheduled meeting of
the Parties or, if the proposed amendment is to be considered at an emergency meeting
of the Parties, the terms of such amendment shall be transmitted in writing to the
representatives of the parties at least five (5) business days prior to the date of the
emergency meeting of the parties. To be effective, all amendments must be in written
form and executed by all Parties.
(a) In accordance with Section 5 of the Nutrient Monitoring Plan, the
cost sharing provisions and scope of this Agreement shall be reviewed and considered
for amendment by the Parties:
(1) upon the March 11, 2014 interim compliance date, or
(2) when two or more of the monitoring sites are demonstrated to
be in compliance with the final waste load allocations based on
three contiguous years of monitoring data wherein monthly
average concentrations are at or below the final waste load
allocations for Total Nitrogen and Total Phosphorous, whichever
occurs first.
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7.6 Execution in Counterparts.
This Agreement may be executed simultaneously in counterpart, each of which shall be
deemed an original, but together, shall constitute but one and the same instrument.
7.7 Effective Date.
The effective date ("Effective Date") of this Agreement shall be the latest date of
execution by a Party. This Agreement shall be binding upon and shall inure to the
benefit of the respective successors, heirs and assigns of each Party.
7.8 Withdrawal From the Agreement.
A Party may withdraw from this Agreement upon thirty (30) days advanced written
notice to the Parties. The withdrawing Party will be responsible for its respective share,
as determined in accordance with Exhibit B, of the cost associated with the work that
has been completed through and including the date of withdrawal. The remaining cost
shares and additional cost shares resulting from the withdrawal of a Party will be
distributed among the remaining Parties according to their proportional cost share as
set forth in Exhibit B. All Parties understand, acknowledge, and agree that withdrawal
from the Agreement shall terminate any responsibility, liability or obligation resulting
from this Agreement commencing from the date of withdrawal. A Party who withdraws
from the Agreement shall remain liable for any loss, debt, liability otherwise incurred
prior to the effective date of its withdrawal.
7.9 Grant of Mutual Access Rights. •
During the term of this Agreement, each of the Parties hereby grants to the other
Parties the right of access and entry to all municipal storm drains, creeks, canyons,
drainage courses and monitoring stations subject to this Agreement (the "Property") at
all reasonable times for the purpose of discharging the duties and obligations described
in this Agreement. Prior to exercising said right of entry, the entering Party shall provide
reasonable written notice to the Party who owns the Property. For the purposes of this
provision, written notice shall include notice delivered via email. All notices provided
pursuant to this Article shall be delivered to the Party Representative at least 48 hours
in advance of entry onto the Property and must receive confirmation from the Party that
entry may proceed onto the Property. Any entering Party shall indemnify, defend and
hold harmless the Party who owns the entered property, its Special Districts, elected
and appointed officers, employees, and agents from and against any and all liability,
including but not limited to demands, claims, suits, administrative proceedings, actions,
fees, costs, and expenses (including attorney and expert fees), arising from or
connected with the entry onto the Property and Work performed on said Property by the
entering Party or its consultant.
7.10 Indemnification.
Each Party hereby agrees to indemnify, hold harmless, and defend each other Party,
including Special Districts, and their respective elected and appointed officials, officers,
employees, and agents from any and all liability, including but not limited to demands,
claims, suits, administrative proceedings, actions, fees, costs, and expenses (including
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attorney and expert witness fees) as a consequence of, or arising out of, the
performance of this Agreement and attributable to the fault of the indemnifying party. If
the allegations or ultimate facts established in any such claim, suit, administrative
proceeding, or action demonstrate fault by more than one Party to this Agreement, then
the Parties found at fault shall seek a determination of their percentage of fault and/or
liability by either a process agreed to by them or in a proceeding before a court of
competent jurisdiction. After the determination of fault is made, the Party or Parties
liable to the other(s) will indemnify the other Party or Parties to the extent of its or their
respective percentage of liability. If and only if the determination by the court (or other
agreed upon process) results in a decision that each Party is equally at fault, then no
party shall have any further duty to defend or indemnify any other Party. It is expressly
understood and agreed that the foregoing provisions are intended to be as broad and
inclusive as is permitted by the law of the State of California and will survive termination
of this Agreement.
Any consultants (including any contract analytical laboratory) retained by any Party to
discharge any duties under this Agreement shall agree to indemnify and hold harmless
each Party and its agents and representatives from any and all liability or financial loss
to the extent permitted by law. RHE as contracting party on behalf of the Parties shall
require that any consultant has insurance coverage of at least $1 million for automobile
liability, general liability, contractor's pollution legal liability, and if appropriate, errors
and omissions coverage.
7.11 Assignment Prohibited.
No Party shall assign, transfer, or subcontract any interest in this Agreement or any
obligation or right or obligation hereunder. Any attempt by a Party to so assign,
transfer, or subcontract any rights, duties, or obligations arising hereunder shall be null,
void and of no effect.
7.12 Non-Waiver of Terms, Rights and Remedies.
Waiver by any Party of any one or more of the conditions of performance under this
Agreement shall not be construed as a waiver of any subsequent failure to comply with
the same conditions or any other condition of performance under this Agreement.
7.13 Governing Law and Construction.
The validity, interpretation, and performance of this Agreement shall be controlled by
and construed under the laws of the State of California. In the event of any asserted
ambiguity in, or dispute regarding the interpretation of any matter herein, the
interpretation of this Agreement shall not be resolved by any rules of interpretation
providing for interpretation against the party that causes the uncertainty to exist or
against the party who drafted the Agreement or who drafted that portion of the
Agreement.
7.14 Exhibits; Precedence.
All documents referenced as exhibits in this Agreement are hereby incorporated in this
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Agreement and expressly made a part hereof. In the event of any material discrepancy
between the express provisions of this Agreement and the provisions of any document
incorporated herein by reference, the provisions of this Agreement shall prevail.
7.15 Severability.
If any provision of this Agreement shall be determined by any court to be invalid, illegal
or unenforceable to any extent, the remainder of this Agreement shall not be affected
and this Agreement shall be construed as if the invalid, illegal or unenforceable
provision had never been contained in this Agreement.
7.16 Entire Agreement.
This Agreement, and any other documents incorporated herein by specific reference,
represents the entire and integrated agreement between the Parties. This Agreement
supersedes all prior oral or written negotiations, representations or agreements. This
Agreement may not be amended, nor any provision or breach hereof waived, except by
written instrument approved by a majority vote of the legislative body of each Party and
signed by the respective Party Representatives which expressly refers to this
Agreement.
7.17 No Third Party Beneficiaries.
This Agreement is intended solely for the benefit of the Parties to this Agreement, and
no third party shall be deemed to be a beneficiary or to have any rights hereunder
against the Authority or any of the provisions hereof.
7.18 Attorney's Fees.
In the event that any Party to this Agreement shall commence any legal action or
proceeding to enforce or interpret the provisions of this Agreement, the prevailing Party
or Parties in such action or proceeding shall be entitled to recover its (or their) costs of
suit, including reasonable attorneys' fees.
IN WITNESS THEREOF, the Parties to this MOA have caused this MOA to be executed
on their behalf, respectively, as follows:
- Signatures begin on next page —
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CITY OF ROLLING HILLS ESTATES
Attest:
By:
Steven Zuckerman
Mayor
Dougla . Prichard
City C rk
Approve as to Form:
Robert Tys•
City Attor -y
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CITY OF RAN - • PALOS VERDES
Attest:
010
By:
afA Thomas D. Long
Mayor
Carla Morreale
City Clerk
Approved as to Form:
Carol W. Lynch O
City Attorney
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CITY OF PALOS VERDES ESTATES
Attest:
By: i-
Rosemaryhrey
Mayor
udy mith
City Clerk
Approved as to Form:
or AA A.
Christi Hogin
City Attorney
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CITY OF ROLLING HILLS
Attest: :/rj-e----
c cklfr:',41 ri
or
/
.✓ I�
Ant. 'e.'etc
City Clerk
Approved as to ' rm:
Ilk
'W "- Jenkins II
City Attorney
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Memorandum of Agreement
EXHIBIT A
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Responsible Agencies (Parties)
Primary Jurisdiction:
1. City of Rolling Hills Estates
4045 Palos Verdes Drive North
Rolling Hills, California 90274
Fax: (310) 377-4468
Party Representative: Assistant City Manager
Additional Parties:
2. City of Palos Verdes Estates
340 Palos Verdes Drive West
Palos Verdes Estates, California 90274
Fax: (310) 378-7820
Party Representative: Director of Public Works & Planning
3. City of Rancho Palos Verdes
30940 Hawthorne Boulevard
Rancho Palos Verdes, California 90274
Fax: (310) 544-5252
Party Representative: Director of Public Works
4. City of Rolling Hills
2 Portuguese Bend Road
Rolling Hills, California 90274
Fax: (310) 377-7288
Party Representative: City Manager
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EXHIBIT B
Responsible Jurisdictions' Share of Annual
Fixed Monitoring and Reporting Costs
Based on Area in Machado Lake Watershed
as a Percentage of Area to be Monitored
PERCENTAGE
ACRES IN OF AREA
WATERSHED WITH RESPECT
JURISDICTION (excluding Chandler TO TOTAL AREA
subdrainage which IN WATERSHED
has no effective
discharge)
Palos Verdes Estates 250 8%
Rancho Palos Verdes 701 23%
Rolling Hills 637 21%
Rolling Hills Estates 1402 47%
2990 100%
TOTAL
Note: As set forth in 5.3(f), if the total annual cost share is not spent in a particular year,
the excess amount will be carried over to the next year. Then, the agencies will only be
invoiced for their percentage, subtracted by the excess amount.
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EXHIBIT C
Estimated Responsible Jurisdictions' Share of Monitoring Costs
by Sub-drainage Area Based on
Percentage of Area Draining To Individual Monitoring Sites
Monitoring/ Annual Wet Palos Rancho Rolling Rolling TOTAL
Observation Site Weather Lab Verdes Palos Hills Hills
Analysis& Estates Verdes Estates
Field Labor
percentage distribution by agency
Solano $ 1,125.00 100% 0% 0% 0% 100%
Valmonte $ 1,125.00 18% 27% 0% 55% 100%
RHECityHall $ 1,125.00 0% 33% 4% 63% 100%
Ranchview/Chadwick $ -- 0% 64% 0% 36% 100%
Lariat $ 1,125.00 0% 0% 94% 6% 100%
TOTAL $ 4,500.00 $1,328.59 $ 671.62 $ 1,102.99 $ 1,396.80
Monitoring/ Annual Dry Palos Rancho Rolling Rolling TOTAL
Observation Site Weather Lab Verdes Palos Hills Hills
Analysis Cost Estates Verdes Estates
(1/3 lab)
percentage distribution by agency
Solano $ 2,760.00 100% 0% 0% 0% 100%
Valmonte $ 2,760.00 0% 0% 0% 100% 100%
RHECityHall $ 2,760.00 0% 25% 5% 70% 100%
Ranchview/Chadwick $ - 0%
Lariat $ - 0%
TOTAL $ 8,280.00 $2,760.00 $ 689.06 $ 134.72 $4,696.22
Monitoring/ Annual Dry Palos Rancho Rolling Rolling
Observation Site Weather Verdes Palos Hills Hills
Labor Cost Estates Verdes Estates
(1/5 labor)
percentage distribution by agency
Solano $ 3,456.00 100% 0% 0% 0% 100%
Valmonte $ 3,456.00 18% 27% 0% 55% 100%
RHECityHall $ 3,456.00 0% 25% 5% 70% 100%
Ranchview/Chadwick $ 3,456.00 0% 64% 0% 36% 100%
Lariat $ 3,456.00 0% 0% 94% 6% 100%
TOTAL 1$ 17,280.0014,081.44 $ 4,001.17 $3,422.21 $ 5,775.17
Machado Lake Nutrient TMDL
Memorandum of Agreement
C-1
Annual Area%of Annual One-Time Total First Total First
Monitoring watershed Report and Costs Year Cost Year Cost
Cost O.A Mgmt. including
Field/Lab (fixed cost) 20%
,contingency
Palos Verdes Estates $ 8,170.03 8% $ 1,003.00 $ 961.20 $10,134.24 $ 12,161.08
Rancho Palos Verdes $ 5,361.86 23% $2,813.71 $2,696.47 $10,872.04 $ 13,046.45
Rolling Hills $ 4,659.92 21% $ 2,554.83 $ 2,448.37 $ 9,663.12 $ 11,595.74
Rolling Hills Estates $ 11,868.19 47% $ 5,628.47 $ 5,393.95 $22,890.60 $ 27,468.72
TOTAL $ 30,060.001 100% 12,000.00 11,500.00 153,560.00 1$ 64,272.00
Machado Lake Nutrient TMDL
Memorandum of Agreement
C-2
EXHIBIT D
LARWQCB Resolution 2008-006
Amendment to the Water Quality Control Plan
for the Los Angeles Region to Incorporate a Total Maximum Daily Load
for Eutrophic, Algae, Ammonia, and Odors (Nutrient)
for Machado Lake
Including:
Attachment A to Resolution No. 2008-006
SWRCB Resolution 2008-089
USEPA Approval Letter
Office of Adminstrative Law Approval
Machado Lake Nutrient TMDL
Memorandum of Agreement
C-3
a
•
State of California
California Regional Water Quality Control Board, Los Angeles Region ••
RESOLUTION NO. R08-006
May 1, 2008
Amendment to the Water Quality Control Plan for the Los Angeles Region
to Incorporate a Total Maximum Daily Load for Eutrophic, Algae, Ammonia,
• and Odors (Nutrient) for Machado Lake
•
WHEREAS, the California Regional Water Quality Control Board, Los Angeles
Region, finds that:
1. The Federal Clean Water Act (CWA) requires the California Regional Water
Quality Control Board, Los Angles Region (Regional Board) to establish water
quality standards for each water body within its region. Water quality standards
include-beneficial uses, water quality objectives that are established at levels
sufficient to protect those beneficial uses, and an antidegradation policy to •
prevent degrading waters. Water bodies that do not meet•water quality
standards are considered impaired.
2. CWA section 303(d)(1) requires each state to identify the waters within its
boundaries that do not meet water quality standards. Those waters are placed
on the state's "303(d) List" or "Impaired Waters List". For each listed water, the
state is required to establish the Total Maximum Daily Load (TMDL) of each:
pollutant impairing the water quality standards in .that waterbody. Both the
identification of impaired waters and TMDLs established for those water must be
submitted to the United States Environmental Protection Agency (U.S. EPA) for
approval pursuant to CWA section 303(d)(2). For all waters that are not
identified as impaired, the states are nevertheless required to create TMDLs
pursuant to CWA section 303(d)(3).
•
3. A consent decree between U.S. EPA, Heal the Bay, Inc. and BayKeeper, Inc.
was approved on March 22, 1999, which resolved litigation between those
parties relating to the pace of TMDL development. The court order directs the
U.S. EPA to ensure that TMDLs for all 1998-listed impaired waters be
established within 13 years of the consent decree. The consent decree
combined water body pollutant combinations in the Los Angeles Region into 92
• " TMDL analytical units. In accordance with the consent decree, the Machado•
• Lake Eutrophic, Alage, Ammonia, and Odors (Nutrient) TMDL addresses the
waterbody with eutrophic, algae, ammonia, and odor listings in analytical unit 76.
Based on the consent decree schedule, TMDLs must be approved or established
by U.S.EPA by March 2012.
4. The elements of a TMDL are described in 40 CFR 130.2 and 130.7 and section
303(d)(1)(C) and (D) of the CWA, as well as in U.S. EPA guidance documents
(Report No. EPA/440/4-91/001). A TMDL is defined as the sum of the individual
waste load allocations for point sources, load allocations for nonpoint sources •
and natural background (40 CFR 130.2).. TMDLs must be set at levels necessary
to attain and maintain the applicable narrative and numeric water quality
Resolution No.R08-006
• • Page 2
standards with seasonal variations and a margin of safety that takes into account
any lack of knowledge concerning the relationship between effluent limitations
and water quality (40 CFR 130.7(c)(1)). 40 CFR 130.7 also dictates that TMDLs
shall take into account critical conditions for stream flow, loading and water
quality parameters. TMDLs typically include one or more numeric "targets", i.e.,
numerical translations of the existing water quality standards, which represent
attainment of those standards, contemplating the TMDL elements described
above. Since a TMDL must represent the "total" load, TMDLs must account for
all sources of the relevant pollutants, irrespective of whether the pollutant is
discharged to impaired or unimpaired upstream reaches. i
5. . Neither TMDLs nor their targets or other components are water quality
objectives, and thus their establishment does not implicate California Water Code
section 13241. Rather, under California Law, TMDLs are programs to implement
• existing standards (including objectives), and are thus established pursuant to
Water Code section 13242. Moreover, they do not create new bases for direct
enforcement against dischargers apart from the existing water quality standards
they translate. The targets merely establish the bases through which load
• allocations (LAs) and waste load allocations (WLAs) are calculated. WLAs are
only enforced for a discharger's own discharges, and then only in the context of
the discharger's National Pollutant Discharge Elimination System (NPDES)
permit (or other permit, waiver, or prohibition), which must contain effluent limits
consistent with the assumptions and requirements of the WLAs (40 C.F.R.
122.44(d)(vii)(B)). The Regional Board will develop permit requirements through
subsequent permit actions that will allow all interested persons, including but not
limited to municipal storm water dischargers, to provide comments on how the
WLAs should be translated into permit requirements.
6. As envisioned by Water Code section 13242, the TMDL contains a "description
of surveillance to be undertaken to determine compliance with objectives." The
Compliance Monitoring and Special Studies elements of the TMDL recognize
that monitoring will be necessary to assess the on-going condition of Machado 0 i
Lake and to assess the on-going effectiveness of efforts by dischargers to reduce
nutrient loading to Machado Lake. Special studies may also be appropriate to
provide further information about new data, new or alternative sources, and
revised scientific assumptions. The TMDL does not establish the requirements
for these monitoring programs or reports, although it does recognize the type of
information that will be necessary to secure. The Regional Board's Executive
Officer will issue orders to appropriate entities to develop and to submit
monitoring programs and technical reports. The Executive Officer will determine
the scope of these programs and reports, taking into account any legal
requirements, and issue the orders to the appropriate entities.
7. Upon establishment.of TMDLs by the State or U.S. EPA, the State is required to •
incorporate the TMDLs into the State Water Quality Management Plan (40 CFR
130.6(c)(1), 130.7). This Water Quality Control Plan for the Los Angeles Region
(Basin Plan) and applicable statewide plans serve as the State Water Quality
Management Plans governing the watersheds under the jurisdiction of the
Regional Board. Attachment A to this resolution contains the Basin Planning
language for this TMDL. -
Resolution No.R08-006
Page 3
•
8. . Machado Lake is located in the Ken Malloy Harbor Regional Park (KMHRP),
which is a 231 acre Los Angeles City Park serving the Wilmington and Harbor
City areas. The Park is located west of the Harbor freeway (110) and east of
Vermont Street between the Tosco Refinery on the south and the Pacific Coast
Highway on the North. The Machado Lake area is approximately 103.5 acres in
total size. The upper portion, which includes the open water area, is
approximately 40 acres and the lower wetland portion is about 63.5 acres. This •
TMDL will address the 40 acre open water lake. Machado Lake is located within
the Machado Lake Sub-watershed which is approximately 20 square miles and
positioned within the larger 110 square mile Dominguez Channel Watershed.
The dominant land use in the Machado Lake Watershed is high density single
family residential accounting for approximately 45 % of the land use. Industrial,
vacant, retail/commercial, multi-family residential, transportation, and educational
institutions each account for 5-7 % of the land use while "all other"accounts for
the remaining 23 %. Machado Lake is a receiving body of urban and stormwater
runoff from a network of storm drains throughout the watershed. Machado Lake
is identified on the 1998, 2002, and 2006 Clean Water Act 303(d) list of impaired
water bodies as impaired due.to eutrophic conditions, algae, ammonia, and
odors. The proposed TMDL addresses impairments of water quality caused by
these'constituents and the Implementation Plan is developed to achieve water
quality objectives for biostimulatory substances in Machado Lake.
.
• . l
9. Eutrophication is increased nutrient loading to a waterbody and the resulting
increased growth of biota, phytoplankton and other aquatic plants. Phosphorus.
and nitrogen are key nutrients for phytoplankton growth in lakes and are often
responsible for the eutrophication of surface'waters. The increased nutrient
loading is generally from two sources, external loading (discharges into the lake)
and internal loading (recycling of nutrients within the lake). There are many
• biological responses to nutrients (nitrogen and phosphorus) in lakes. The
biologically available nutrients and light will stimulate phytoplankton and or
macrophyte growth. As these plants grow they provide food and habitat for other
organisms such as zooplankton and fish. When the aquatic plants diethey will
release nutrients (ammonia and phosphorus) back into the water through
decomposition. The decomposing of plant material consumes oxygen from the
water column; in addition the recycled nutrients are available to stimulate
additional plant growth. Physical properties such as light, temperature and wind
mixing also play integral roles throughout the pathways described.
10. Excessive nutrient loading, from.either external or internal process, will lead to
excessive phytoplankton and macrophyte growth, which are often considered the
primary problems associated with increased nutrient concentrations in lakes.
This excessive plant biomass may cause increased turbidity, altered planktonic
food chains, algal blooms, reduced dissolved oxygen concentrations, and '
increased nutrient recycling. These changes can lead to a cascade of biological
responses culminating in impaired beneficial uses. Plant growth can lead to
increased pH in the lake due to rapid consumption of carbon dioxide. The.
elevated pH creates a harmful environment for organisms and can increase the
concentration of ammonia potentially leading to direct toxicity of fish and other
organisms. As these large phytoplankton populations and macrophytes die or
break apart the decomposition process will consume oxygen and reduce the
Resolution No.R08-006
Page 4
oxygen levels found in the lake. Low dissolved oxygen levels can be stressful for
fish and other organisms and may in fact lead to fish kills.
11. Numeric targets for the TMDL are based on the specific narrative and numeric
water quality objectives (WQOs) provided in the Basin Plan.
12. The Regional Board's goal in establishing the TMDL for eutrophic, algae,
ammonia, and odors in Machado Lake is to protect the REC 1, REC 2, aquatic
life (WARM, WILD, RARE, WET) and water supply (MUN) beneficial uses of
Machado Lake and to achieve the numeric and narrative water quality objectives
set to protect those uses.
13. Regional Board Staff have prepared .a detailed technical document that analyzes
and describes the specific necessity and rationale for the development of this
TMDL. The technical document entitled "Machado Lake Eutrophic, Algae,
Ammonia, and Odors (Nutrient) TMDL" is an integral part of this Regional Board
action and was reviewed, considered, and accepted by the Regional Board
before acting. Further, the technical document provides the detailed factual
basis and analysis supporting . the problem statement, numeric targets
(interpretation of the narrative and numeric water quality objectives, used to
calculate the load allocations), source analysis, linkage analysis, waste load
allocations (for point.sources), load allocations (for nonpoint sources), margin of
safety, and seasonal variations and critical conditions of this TMDL.
14. On November 2, 2004, City of Los Angeles voters'approved Proposition 0,. a •
ballot initiative to implement water quality improvement projects within the City of
Los Angeles. As part of Proposition 0, concept reports have been developed for
the Machado Lake Ecosystem Rehabilitation Project and the Wilmington. Drain
Multi-use project. Many of the proposed actions under these Proposition 0
• projects, such as sediment removal and storm drain inlet upgrades, will improve
water quality in Machado Lake. Therefore, the Implementation Plan for the
Machado Lake TMDL was designed to coordinate with these Proposition 0
projects in order to realize the best use of public funds. However, the Proposition
O projects, currently in the concept stage, may need to be augmented to achieve
• TMDL numeric targets and eliminate negative eutrophic conditions in Machado
Lake. In recognition of the potential need to expand on Proposition 0 projects,
the TMDL Implementation Schedule provides adequate time for design and
implementation of projects so that they attain TMDL requirements and achieve
. water quality standards.
15. On May 1, 2008, prior to the Board's action on this resolution, public hearings
were conducted on the Machado Lake Eutrophic, Algae, Ammonia, and Odors
(Nutirent) TMDL. Notice of the hearing for the Machado Lake Nutrient TMDL
was, published in accordance with the requirements of Water Code Section
13244. This notice was published in the Los Angeles Times on February 7,
2008.
16. The public has had a reasonable opportunity to participate in the review of the
amendment to the Basin Plan. Public Stakeholder meetings were held on March
14, 2006, February 21, 2007, July 16, 2007, September 12, 2007, and November
26, 2007. A draft of the TMDL was released for public comment on February 7,
.
Resolution No. R08-006
Page 5
2008; a Notice of Hearing and Notice of Filing were published and circulated 45
days preceding Board action; Regional Board staff responded to oral and written
comments received from the public; and the Regional Board held a public
hearing on May 1, 2008 to consider adoption of the TMDL.
17. In amending the Basin Plan to establish this TMDL, the Regional Board
considered the requirements set forth in Sections 13240 and 13242 of the
California Water Code.
• 18. Because the TMDL implements existing narrative and numeric water quality
objectives (i.e., numeric water quality objectives in the Basin Plan), the Regional
Board (along with the State Water Resources Control Board) have determined
that adopting a TMDL does not require the water boards to consider the factors
of Water Code section 13241. The consideration of the.Water Code section
13241 factors, by section 13241's express terms, only applies "in establishing
water quality objectives." Here the Regional Board is not establishing water
quality objectives, but as required by section 303(d)(1)(C) of the Clean Water Act
is adopting a TMDL that will implement the previously established objectives that
have not been achieved. In making this determination, the Regional Board has
considered and relied upon a legal memorandum from the Office of.Chief •
Counsel to the State Water Board's basin planning staff detailing why TMDLs
cannot be considered water quality objectives. (See Memorandum from the Staff
Counsel Michael J. Levy, Office of Chief Counsel,to Ken Harris and Paul Lillebo,
Division of Water Quality: The Distinction Between A TMDL's Numeric Targets •
and Water Quality Standards, dated June 12, 2002.)
19, While the Regional Board is not required to consider the factors of-Water Code
section 13241, it nonetheless has developed and received significant information
pertaining to the Water Code section 13241 factors and has considered that
information in developing and adopting this TMDL. The past, present, and
probable future beneficial uses of water have been considered in that Machado
Lakeis designated for a multitude ,of beneficial uses in the Basin Plan. The
beneficial uses for Machado Lake include aquatic life habitat uses, water contact
and non-contact water recreation, and water supply. The environmental
characteristics of Machado Lake are spelled out at length in the Basin Plan and
in the technical documents supporting this Basin Plan amendment, and have
been considered in developing this TMDL. Water quality conditions that
reasonably could be achieved through the coordinated control of all factors which
affect water quality in the area have been considered. This TMDL provides
several compliance options, including lake management strategies/lake
treatment options that could be implemented directly at the lake and watershed �
strategies for stormwater'runoff throughout the watershed to treat and reduce
nutrient loading to the lake. These options provide flexibility for responsible
jurisdictions to reduce internal and external nutrient loading to Machado Lake.
Establishing a plan that will ensure Machado Lake attains and continues to
maintain water quality standards is a reasonable water quality condition.
• However, to the extentthat there would be any conflict between the
consideration of the factor in Water Code section 13241, subdivision (c), if the
consideration were required, and the Clean Water Act, the Clean Water Act
would prevail. Economic considerations were considered throughout the
development of the TMDL. Some of these economic considerations arise in the
Resolution No.R08-006
•
Page 6
context of Public Resources Code section 21159 and are equally applicable
here. The implementation program for this TMDL recognizes, the economic
limitations on achieving immediate compliance and allows a flexible
implementation schedule of 8.5 years. The need for housing within the region
has been considered, but this TMDL is unlikely to affect housing needs.
Whatever housing impacts could materialize are ameliorated by the flexible
nature of this TMDL and the 8.5 year implementation schedule.
20. The amendment is consistent with the State Antidegradation Policy.(State Board
Resolution No. 68-16); in that the changes to water quality objectives (i) consider
maximum benefits to the people of the state, (ii) will not unreasonably affect
present and anticipatedbeneficial use of waters, and (iii) will not result in water
quality less than that prescribed in policies. Likewise, the amendment is
consistent with the federal Antidegradation Policy (40 CFR 131.12).
21. Pursuant to Public Resources Code section 21080.5, the Resources Agency has
approved the Regional Water Boards' basin planning process as a "certified
regulatory program" that adequately satisfies the California Environmental
Quality Act (CEQA) (Public Resources Code, § 21000 et seq.) requirements for
preparing environmental documents (14 Cal. Code Regs. § 15251(g); 23 Cal.
Code Regs. § 37.82.) The Regional Water Board staff has prepared "substitute
environmental documents" for this project that contains the required
environmental documentation under the State Water Board's CEQA regulations.
(23 Cal. Code Regs. § 3777.) The substitute environmental documents include
the TMDL staff report entitled "Machado Lake Eutrophic Algae, Ammonia, and
Odors (Nutrient) TMDL", the environmental checklist, the comments and
responses to comments, the basin plan amendment language, and this
resolution. The project itself is the establishment of a TMDL for eutrophic, algae,
ammonia, and odors in Machado Lake. While the Regional Board has no
discretion to not establish a TMDL (the TMDL is required by federal law), the
Board doesexercise discretion in assigning waste load allocations and load
• allocations, determining the program of implementation, and setting various
milestones in achieving the water quality standards. The CEQA checklist and .
• other portions of the substitute environmental documents contain significant
analysis and numerous findings related to impacts and mitigation measures.
22. A CEQA Scoping hearing was conducted on,September 12, 2007 at the Regional
Board's office—320 West 4th Street, Suite 200, Los Angeles, California. A notice
of the CEQA Scoping hearing was sent to interested parties including cities
and/or counties with jurisdiction 'in or bordering the watershed. The notice of
CEQA Scoping hearing was also published in the Los Angeles Daily News on
August 1, 2007. '
•
23. In preparing the substitute environmental documents, the Regional Board has
considered the requirements. of Public Resources Code section 21159 and
California Code of Regulations, title 14, section 15187, and intends those
documents to serve as a tier 1 environmental review. This analysis is not
intended to be an exhaustive analysis of every conceivable impact, but an
analysis of the reasonably,foreseeable consequences of the adoption of this
regulation, from a programmatic perspective. Many compliance obligations will
be undertaken directly by public agencies that will have their own obligations
•
Resolution No.R08-006
Page 7
under CEQA. In addition, public agencies including but not limited to County of
Los Angeles, Los Angeles County Flood Control District, Cities of Carson,
Lomita, Los Angeles, Palos Verdes Estates, Rancho Palos Verdes, Redondo
Beach, Rolling Hills, Rolling Hills Estates, and Torrance are foreseeably
expected to facilitate compliance obligations. The"Lead" agencies for such tier 2
projects, will assure compliance with project-level CEQA analysis of this
programmatic project. Project level impacts will need to be considered in any
subsequent environmental analysis performed by other public agencies, pursuant
to Public Resources Code section 21159.2.
24. The foreseeable methods of compliance for this TMDL entail construction and
operation of stormwater management practices such as filter systems, alum
injection system, swales, and bioretention areas. Foreseeable methods of
compliance"also include lake management practices, such as hydraulic dredging,
aeration systems, alum treatment, and fisheries management.
25. Consistent with. the Regional Board's substantive obligations under CEQA,. the
substitute environmental documents do not engage in speculation or conjecture,
and only consider the reasonably foreseeable environmental impacts, including
those relating to the methods of compliance, reasonably foreseeable feasible
mitigation measures to reduce those impacts, and the reasonably foreseeable
alternative. means of compliance, which would avoid or reduce the identified
impacts.
26. The proposed amendment could have a potentially significant adverse effect on
the environment. However, there are feasible alternatives, feasible mitigation
measures, or both, that if employed, would substantially lessen the potentially
significant adverse impacts identified in the substitute environmental documents;
however such alternatives or mitigation measures are within the responsibility
and jurisdiction of other public agencies, and not the Regional Board. Water
• Code section 13360 precludes the Regional Board from dictating the manner in
which responsible agencies comply.with any of the Regional Board's regulations
. or orders. When the agencies responsible for implementing this TMDL
determine how they will proceed, the agencies responsible for those parts of the
project can and should incorporate such alternatives and mitigation into any
subsequent projects or project approvals. These feasible alternatives and
mitigation measures are described in more detail in'the substitute environmental
documents. (14 Cal. Code Regs. § 15091(a)(2).)
27. From a program-level perspective, incorporation of the alternatives and mitigation
measures outlined in the substitute environmental documents may not forseeably
reduce impacts to less than significant levels.
28. The 'substitute documents for this TMDL, and in particular the Environmental
Checklist and staffs responses to comments, identify broad mitigation
approaches that should be considered at the project level. •
•
29. ' - To the extent significant adverse environmental effects could occur, the Regional
Board has balanced the economic, legal, social, technological,,and other benefits '
of the TMDL against the unavoidable environmental risks and finds that specific
economic, legal, social, technological, and other benefits of the TMDL outweigh
• Resolution No.R08-006
Page 8
•
the unavoidable adverse environmental effects, such that those effects are
considered acceptable. The basis for this findingis more fully set forth in the
substitute environmental documents. (14 Cal. Code Regs. § 15093.)
• 30. Health and Safety Code section 57004 requires external scientific peer review for
certain water quality control policies. Prior to public notice of the draft TMDL, the
Regional Board submitted the scientific basis and scientific portions of the
Machado•Lake Nutrient TMDL to Dr..Rakesh Gelda and Dr. Paul McGinley for
external scientific peer review. The peer review comment reports were received
by the Regional Board on January 7, 2008 and January 15, 2008. The peer
review found that the•proposed TMDL data, modeling analyses, and pollutant •
allocations were presented in a scientifically credible manner. Minor
modifications ,were made to the scientific portions of the TMDL to address
comments identified during the peer review process. i
31. The regulatory action meets the "Necessity" standard of the Administrative
Procedures Act, Government Code, section 11353, subdivision (b). As-specified
above, Federal law and regulations require that TMDLs be incorporated into the.
water quality management plan. The Regional Board's Basin Plan is the
Regional Board's component of the water quality management plan, and the
• Basin Plan is how the Regional Board takes quasi-legislative, planning actions.
Moreover, the TMDL is a program of implementation for existing water quality
objectives, and is, therefore, appropriately a component of the Basin Plan under
Water Code section 13242. The necessity of developing a TMDL is established
in the TMDL staff report, the section 303(d) list, and the data contained in the
administrative record documenting the eutrophic, algae, ammonia, and odors
impairments of Machado Lake.
32. The Basin Plan amendment incorporating a TMDL for eutrophic, algae,
ammonia, and odors for Machado Lake must be submitted for review and
approval by the State Water Resources Control Board (State Board), the State
Office of Administrative Law (OAL), and the U.S. EPA. The Basin Plan
amendment will become effective upon approval by OAL and U.S. EPA. A
Notice of Decision will be filed with the Resources Agency. .
33. If during the State Board's approval process Regional Board staff, the SWRCB or
• State Board staff, or OAL determines that minor, non-substantive modifications to
the language of the amendment are needed for clarity or consistency, the
Executive Officer should make. such changes consistent with the Regional
• Board's intent in adopting this TMDL, and should inform the Board of any such
changes.
34. Considering the record as a whole, this Basin Plan amendment will result in no
effect, either individually or cumulatively, on wildlife resources.
•
Resolution No.R08-006 !I
Page 9
THEREFORE, be it resolved that pursuant to sections 13240 and 13242 of the •
Water Code, the Regional Board hereby amends the Basin Plan as•follows:
•1. The Regional Board hereby approves and adopts the CEQA substitute
environmental documentation, which was prepared in accordance with Public
Resources_Code section 21159 and California Code of.Regulations, title 14, section
• 15187, and directs the Executive Officer to sign the environmental checklist.
2. Pursuant to Sections 13240 and 13242 of the California Water Code, the Regional
Board, after considering the entire record, including oral testimony at the hearing,
hereby adopts the amendments to Chapter 7 of the Water Quality Control Plan for
the Los Angeles Region, as set forth in Attachment A hereto, to incorporate the
elements of the Machado Lake Eutrophic, Algae, Ammonia, and Odors (Nutrient) •
TMDL.
3. The Executive Officer is directed to forward copies of the Basin Plan amendment to
the State Board in accordance with the requirements of section 13245 of the
California Water Code. •
4. The Regional Board requests that the State Board approve the Basin Plan
amendment in accordance with the requirements of sections 13245 and 13246 of the
California Water Code and forward it to OAL and the U.S. EPA. • •
5. If during the State•Board's approval process, Regional Board staff, the State Board
• or OAL determines that minor, non-substantive modifications to the language of the
amendment are needed for clarity or consistency, the Executive Officer may make.
such changes, and shall inform the Board of any such changes. •
•
6. The Executive Officer is authorized to request a "No Effect Determination" from the • . •
Department of Fish and Game, or transmit payment of the applicable fee as may be
required to the Department of Fish and.Game.
I,Tracy J. Egoscue, Executive Officer, do hereby certify that the foregoing is a full, true,
and correct copy of a resolution adopted by the.California Regional Water Quality
Control Board, Los Angeles Region, on May 1, 2008.
•
5- 9
. • _
oscue Date
Executiv:& icer
' •i
1i
Attachment A to Resolution No. R08-006
Amendment to the Water Quality Control Plan—Los Angeles Region
to Incorporate the
Total Maximum Daily Load for Eutrophic, Algae, Ammonia, and Odors
(Nutrient) in Machado Lake
Adopted by the California Regional Water Quality Control Board, Los Angeles Region on
May 1, 2008
Amendments
Table of Contents
Add:
Chapter 7. Total Maximum Daily Loads (TMDLs)
7-29 Machado Lake Nutrient TMDL
• List of Figures, Tables, and Inserts
Add: ,
Chapter 7. Total Maximum Daily Loads (TMDLs)
• Tables
7-29 Machado Lake Eutrophic, Algae, Ammonia, and Odors (Nutrient)TMDL
7-29.1. Machado Lake Eutrophic, Algae, Ammonia, and Odors (Nutrient)
TMDL Elements
7-29.2. Machado Lake Eutrophic, Algae, Ammonia, and Odors (Nutrient)
TMDL- Implementation Schedule
Chapter 7. Total Maximum Daily Loads (TMDLs) 0
Machado Lake Eutrophic,Algae,Ammonia, and Odors (Nutrient) TMDL
This TMDL was adopted by:
The Regional Water Quality Control Board on May 1, 2008.
This TMDL was approved by:
The State Water Resources Control Board on [Insert date].
The Office of Administrative Law on [Insert date].
The U.S. Environmental Protection Agency on [Insert date].
This TMDL is effective on [Insert Date] 0
The elements of the TMDL are presented in Table 7-29.1 and the Implementation Plan
in Table 7-29.2 •
•
-1 -
Attachment A to Resolution No. R08-006
Table 7-29.1. Machado Lake Eutrophic, Algae, Ammonia, and Odors (Nutrient)
TMDL: Elements
TMDL Element:. .,Regulatory Provisions
Problem Excessive loadings of nutrients, in particular nitrogen (including ammonia) and
Statement . phosphorus, cause eutrophic effects, including algae and odors, which impair the
beneficial uses of Machado Lake. The nutrient enrichment results in high algal
productivity; algal blooms have been observed in the lake during summer
months. In addition, high nutrient concentrations contribute to excessive and
nuisance macrophyte growth. Algae respiration and decay depletes oxygen from •
the water column creating an adverse aquatic environment. Machado Lake was
placed on the Clean Water Act 303(d) list of impaired waterbodies in 1998, 2002,
and 2006 for ammonia, algae, odors, and eutrophic.
Applicable Water Quality Objectives for this TMDL are narrative objectives for
Biostimulatory Substances and Taste and Odor; and numeric objectives for
Dissolved Oxygen and Ammonia.
The beneficial uses of Machado Lake include beneficial uses associated with
recreation (REC 1 and REC 2), aquatic life (WARM, WILD, RARE, and WET)and
water supply (MUN).
This TMDL addresses the eutrophic, algae, ammonia, and odor listings which
impair these uses.
Numeric The total phosphorus target for Machado Lake is 0.1 mg/L as a monthly average
Targets concentration in the water column, which is based upon US EPA Nutrient Criteria
Technical Guidance Manual for Lakes and Reservoirs. A ratio of total nitrogen to
total phosphorus of 10 is the basis for the total nitrogen (TKN + NO3-N + NO2—N)
numeric target of 1.0 mg/L as a monthly average concentration in the water
column. The total nitrogen target incorporates all forms of nitrogen including
TKN, which is the sum of organic nitrogen and ammonia nitrogen, nitrate nitrogen
(NO3-N), and nitrite nitrogen (NO2-N). The total nitrogen target expressed as a
monthly average is protective of chronic aquatic life exposure for ammonia.
There is a separate numeric target for ammonia of 5.95 mg/L as an hourly
average to be protective of acute aquatic life exposure. The chlorophyll a target is
20 ug/L based on EPA guidance and the Carlson Trophic Status Index. The
dissolved oxygen target is a single sample concentration of no less than 5 mg/L
measured at 0.3 meter above the sediments based on the Basin Plan objective.
The following table provides the numeric targets for the Machado Lake TMDL.
•
-2-
Attachment A to Resolution No. R08-006
•
TMDL Element Regulatory Provisions
Indicator';' .,Numeric,Tar et
Total Phosphorus 0.1 mg/L monthly
average
Total Nitrogen 1.0 mg/L monthly
(TKN + NO3-N + NO2
—N) average
Ammonia - N 5.95 mg/L one-hour
average
Ammonia-N 2.15 mg/L 30 day
average
5 mg/L single sample
Dissolved Oxygen minimum measured
0.3 meter above the
sediments.
20 pg/L monthly
Chlorophyll a average
Source The point sources of nutrients into Machado Lake are stormwater discharges
Analysis from the municipal separate storm sewer system (MS4), California Department of
Transportation (Caltrans), and general construction and industrial discharges.
Stormwater discharges to Machado Lake occur through the following
subdrainage systems: Drain 553, Wilmington Drain, Project 77/510, and Walteria
Lake. Discharges from Walteria Lake and Drain 553 are tributary to the
Wilmington Drain, which then directly discharges in the northern portion of.
Machado Lake. Approximately, 88 % of the discharge into the lake enters
through the Wilmington Drain.
The major nonpoint source of nutrients to Machado Lake is internal nutrient
loading (nutrient flux from sediments). Atmospheric deposition is also a nonpoint
source of total nitrogen. Nutrient loads from wind resuspension, bioturbation,
birds, and general surface runoff are minor sources. Special studies may be
conducted to further evaluate sources.
Linkage The linkage analysis focuses on the relationship between the nutrient loading to
Analysis the lake and the numeric targets established to measure attainment of beneficial
uses. The Nutrient Numeric Endpoints BATHTUB Spreadsheet Model, which
was developed by Tetra Tech for US EPA, was used to establish the linkage
between nutrient loading to Machado Lake and the predicted water quality
response. The model performs waterand nutrient balance calculations under
steady-state conditions. Eutrophication related water quality conditions are
expressed in terms of total phosphorus, ortho-phosphourus, total nitrogen,
inorganic nitrogen, chlorophyll a, transparency (Secchi depth), and hypolimnetic
oxygen depletion rates. The linkage analysis demonstrates that assigning waste
load and load allocations for total nitrogen and total phosphorus will address
eutrophication related water quality conditions.
Waste Load Waste load allocations are assigned to urban stormwater dischargers (MS4,
Allocations Caltrans, general construction and general industrial) in both wet and dry
weather. The final waste load allocations are assigned as concentration based
allocations of 0.1 mg/L and 1.0 mg/L as monthly averages for total phosphorus
and total nitrogen (TKN + NO3-N + NO2-N), respectively.
-3-
Attachment A to Resolution No. R08-006
•
TMDI_ Element Regulatory Provisions
Interim WLAs are based on current in-lake concentrations. The effective date
interim total nitrogen and total phosphorus waste load allocations are set as the
95th percentile of current concentrations in the lake. The 5 year interim total
nitrogen WLAs are established as a 30 percent reduction from current in-lake
• concentrations. Concentration-based interim and final WLAs will be included in
stormwater permits in accordance with NPDES guidance and requirements. The
tables below present the interim and final waste load allocations for the
stormwater discharges.
•
i 7 i gk.i o o- ar;r c�� d� r H sF Total r FTotal Nitrogen t
• Waste Load Allocations?h M '� mak .ia" i x gPii s •
", Phosphorus x(TKN+°NO3 N+�NO2 N)`
Final WLA, , Final WLA r
MS4 Permittees' Caltrans, General
Construction and Industrial 0.1 1.0
•
stormwater permits
1. Municipal Separate Storm Sewer System (MS4) Permittees that are responsible for discharges
to Machado Lake include: Los Angeles County, Los Angeles County Flood Control District, and the
Cities of Carson, Lomita, Los Angeles, Palos Verdes Estates, Rancho Palos Verdes, Redondo
Beach,Rolling Hills,Rolling Hills Estates,and Torrance.
•
Pit. ,fft ... 1M-14� �° to "'n '�o"8'sw�, '�cj i' as
1 Irtenm Total ,....
��� a After , ��" r nterirnTotal �E 5`� 5 �
Waste Loada�� xr x � s 4!cr i ac E�° ' �au g W ;N
'it u � �k r " 1- itrogen4
" � Effectwe�� likaQi•-remits4,70411-41EstiatigkagmANA Phosphorus�� � � --� -�:� ��
�Allocations�{rr� 0 F,fir a M402-N)-
,.� ��,a .�� y r a, ,(�FM�,Dnate " �$� 1 ��?frifi? �E..t,tp s-€r.��,�' 9�' �.? ,a ;"vp�r,�," l �� '.,��.�1 S ig4"r 4.1i e+„moi cE!W L ASibig4)im
At Effective
1.25 3.50
MS4 Permittees, Date
Caltrans, General 52 1.25 2.45
Construction and
Industrial Stormwater
9.5
permits (Final WLAs3) •
0.10 1.00
•
1 The compliance point for all effective date interim WLAs is measured in the lake.
2 The compliance point for all year 5 interim WLAs is measured as specified in Implementation Plan
Section II of Table 7-29.1
3 The compliance point for all final WLAs is measured as specified in Implementation Plan Section II of
Table 7-29-.1
•
• -4-
• Attachment A to Resolution No. R08-006
TMDL Element , • Regulatory Provisions
Load Load allocations are assigned for nonpoint source discharges to the lake,
Allocations primarily internal loading from the lake. The final load allocations for internal
loading are concentration based allocations of 0.1 mg/L and 1.0 mg/L as monthly
averages for total phosphorus and total nitrogen (TKN + NO3-N + NO2 —N),
respectively. Concentration based load allocations are appropriate and can be
evaluated by monitoring the nutrient concentrations in the water column.
Interim LAs are based on current in-lake concentrations. The effective date .
interim total nitrogen and phosphorus load allocations are set at the 95th
percentile of current concentrations in the lake. The 5 year interim total nitrogen
LAs are established as a 30 percent reduction from current in-lake
concentrations. The tables below present the final and interim load allocations
for the nonpoint sources.
Total Total Nitrogen `''
Load Allocations
sphorus (T sN
Nq0
FgaingLititgAlge:tfiggginitfiffalgAttn5P,14.40ttati4IMISPahlg
Internal Nutrient Load (City of Los
Angeles Department of Recreation 0.1 1.0
and Parks)
•
wf aslgr a* as t�1 iia�IritenmAlb• 1°
res a^€iG �� , Afker• . J9# Interim Total t
r�: ��� �r �� �aYears a � �� �p ° �- Nitro e
�CiMlocatlons;;, ttil 1` Phos hor�uAT01,
14i 4 4tIE 4K as i Eff,94,1 DO.te�c cx sa c 98 fin e �rKPf cNO3 N NO2—N
�s o?��ri���,rS—a�>x�,���'a �r ° �,,x C�,,{ �s�, (mg/L) ,r�� w+`
'Yc 3, �'. h.,ar mnrBS4��.. .J .,..c'�.a..�rs� �°..�'�.v''..i�u..y`'. . �� k
9:-r �tl. n .: ,.r... +r ee4,:u,?.„aM,.F .axnPa.0+,
Internal Nutrient At Effective 1.25 3.50
Load (City of Los Date •
Angeles 5 1.25 2.45
Department of
Recreation and 9.5(Final LAs) 0.10 1.00
Parks)
.
• i
•
•
Margin of The uncertainties associated with this TMDL are due to limited data from the
Safety stormdrains entering the lake and the inherent seasonal and annual variability in
delivery of phosphorus and nitrogen for external sources and nutrient cycling
within the lake. To address these uncertainties,_ conservative numeric targets
were selected by establishing the targets under a critical lake volume. Likewise,
the waste load and load allocations are based on a constant value for internal
. loading. Moreover, the lake conditions under which the load capacity was
developed were based on dry weather critical conditions when the lake level is
-5-
Attachment A to Resolution No. R08-006
TMDL Element Regulatory Provisions
reduced and therefore loading capacity is reduced. These conservative
approaches provide an implicit margin of safety.
Seasonal The external nutrient loading to Machado Lake generally occurs during winter
Variations and and spring months, in conjunction with storm events. During the dry season the
Critical lake receives minimal external loading. In the summer there is the release of
Conditions nutrients from the sediments. At the same time there is very little water inflow
and a decreased lake level due to evaporation. These seasonal variations cause
increased nutrient concentrations. Moreover, the reduced lake volume during the
summer months provides less assimilative capacity. The critical condition for the
attainment of beneficial uses at Machado Lake occurs during the summer
months. Also, the critical conditions for dissolved oxygen impairments related to
algae growth are during the warm dry summer months when algal respiration is
highest. The Machado Lake nutrient TMDL accounts for seasonal and critical
conditions of the summer months by assigning a load allocation to the lake
sediments and requiring a reduction in this source of nutrients to the lake, and by
assigning WLAs to urban stormwater dischargers year-round.
Special Studies Special Studies
and Monitoring
Plan Additional monitoring and special studies may be undertaken by dischargers and
responsible agencies to evaluate the uncertainties and assumptions made in the
development of this TMDL. (The results of special studies may be used to
reevaluate waste load allocations and load allocations when the Machado Lake
Nutrient TMDL is reconsidered.)
Optional Study #1: Core flux study to estimate the nutrient flux from
sediments under equilibrium conditions. Results from this study would be
beneficial to gauge the success of implementation measures such as
aeration.
Optional Study #2: A study, to understand factors such as nitrogen and
phosphorus sedimentation rates (particulate settling velocities), the overall
lake sedimentation rate, and sediment resuspension rate. These factors
would be important for a Machado Lake nutrient budget and gauging the
potential need for periodic hydraulic dredging.
Optional Study #3: A work plan for permittees to assess compliance with
TMDL WLAs on a mass basis for total nitrogen and total phosphorous. The
work plan should detail testing methodologies, BMPs, and treatments to be
implemented to attain and demonstrate a reduction of total nitrogen and
phosphorous loading on a mass basis. A final report including the results
shall be submitted to the Regional Board for Executive Officer approval.
Additional special studies proposed by stakeholders are optional and will be
considered at the 7.5 year TMDL reconsideration. All proposed special study
work plans and documents shall be submitted to the Regional Board for
Executive Officer approval prior to special studies being initiated.
-6 -
Attachment A to Resolution No. R08-006
TMDL Element Regulatory Provisions
Monitoring Plan
A Monitoring and Reporting Program (MRP) plan to assess compliance with LAs
and WLAs measured in lake must be submitted to the Executive Officer for
approval within one year of the effective date. Monitoring will begin 60 days after
the Executive Officer has approved the monitoring plan.
This MRP plan will be required as part of the Lake Water Quality Management
Plan as discussed in the Implementation Section.
The MRP plan will be designed to monitor and implement this TMDL. The
monitoring plan is required to measure the progress of pollutant load reductions
and improvements in water quality. The monitoring plan shall
•
• Determine attainment of total phosphorus, total nitrogen, ammonia, dissolved
oxygen, and chlorophyll a numeric targets.
• Determine compliance with the waste load and load allocations for total
phosphorus, and total nitrogen.
• Monitor the effect of implementation actions on lake water-quality
Responsible jurisdictions shall be required to begin monitoring sixty days'after the
Executive Officer approves the MRP. Field samples and water samples shall be
collected bi-weekly on a year-round basis. The lake sampling sites will be
located in the open water portion of the lake with one in the northern portion and
one in the southern portion of the lake. In situ measurements of water quality
shall be made.
The water quality probes will be calibrated immediately prior to departure to the
field against known pH, EC, and DO solutions. Secchi depth, a measurement of
transparency, will also be measured with a standard Secchi disk or other
approved method. Additionally, a staff gauge shall be placed in an appropriate
location at the lake to measure changes in lake elevation.
The monitoring plan shall consider stratification for the collection of water
samples. Water samples shall be analyzed for constituents including but not
limited to the following.
• i
• Total nitrogen
• Total phosphorus
• Nitrate (NO3-N)
• Total ammonia(NH3-N) i
• Ortho-phosphorus (PO4) f
• Total Dissolved Solids
• Total Suspended Solids
• Chlorophyll a
• Turbidity
•
-7-
it
Attachment A to Resolution No. R08-006
li
TMDL Eleet ''���Rec�l�atory Pro�is�ons
mn•
Detection limits shall be less than the numeric targets in this TMDL. A monitoring
report shall be prepared and submitted to the Regional Board annually within six
months after the completion of the final sampling event of the year.
If an alternative WLA compliance option is selected, an appropriate separate
TMDL compliance MRP Plan and TMDL Implementation Plan must be submitted
for Executive Officer approval. Annual monitoring reports demonstrating
compliance or non-compliance with WLAs shall be submitted for Executive
Officer approval.
All compliance monitoring must be conducted in conjunction with a Regional
Board approved Quality Assurance Project Plan (QAPP). The QAPP shall
include protocols for sample collection, standard analytical procedures, and
laboratory certification.
• •
-8-
Attachment A to Resolution No. R08-006
TMDL Element Regulatory Provisions
Implementation Compliance with the TMDL is based on the assigned WLAs and LAs.
Plan Compliance with this TMDL will require the implementation of NPDES
stormwater permit limits and lake management activities to reduce nutrient
loading to the lake, reduce nutrient concentrations in the lake, prevent excessive
algal biomass growth, and maintain an adequate dissolved oxygen
concentration. Table 7-29.2 contains a schedule for responsible jurisdictions to
implement BMPs and a Lake Water Quality Management Plan to comply with the
TMDL.
I. Implementation and Determination of Compliance with LAs
Compliance with the LAs will be measured in the lake and will be achieved
through a combination of implementation of lake management projects and
BMPs to reduce external and internal nutrient loading to the lake and to reduce
and manage internal nutrient sources.
Load allocations will be implemented through the following:
(1) Memorandum of Agreement(MOA), or
(2) Clean Up and Abatement Order or Other Regulatory Order
The responsible jurisdictions for the load allocations shall be allowed one year
from the effective date of this TMDL to enter into a Memorandum of Agreement
(MOA) with the Executive Officer, detailing the voluntary efforts that will be
undertaken to attain the load allocations. The MOA shall comply with the Water
Quality Control Policy for Addressing Impaired Waters: Regulatory Structure and
Options ("Policy"), including part II, section 2 c ii and related provisions, and shall
be consistent the requirements of this TMDL. If the MOA is timely adopted, and
so long as it is implemented, the program described in the MOA shall be deemed
"certified", pursuant to the Policy, subject to the conditions of Policy section 2 e.
The MOA shall include development of a Lake Water Quality Management Plan
(LWQMP), must be approved by the Executive Officer, and may be amended with
Executive Officer approval, as necessary. If a MOA is not established with
responsible jurisdictions within one year or if responsible jurisdictions do not
comply with the terms of the MOA, a cleanup and abatement order pursuant to
Water Code section 13304, or another appropriate regulatory order, shall be
issued to implement the load allocations. .
Furthermore, the implementation of the MOA must result in attainment of the
TMDL load allocations. If the MOA and LWQMP are not implemented or
otherwise do not result in attainment of load allocations, the certification shall be
revoked, the MOA rescinded, and the load allocations shall be implemented
through a cleanup and abatement order, or other order, as described above.
Implementation of the MOA shall be reviewed annually by the Executive Officer
as part of the Monitoring and Reporting Program (MRP) annual reports.
•
To the satisfaction of the Executive Officer the LWQMP shall meet the following
criteria:
-9-
Attachment A to Resolution No. R08-006
TMDL Element Regulatory Provisions
• One and one half years from the effective date of the TMDL responsible
jurisdictions shall submit a LWQMP, MRP Plan and QAPP for approval by •
the Executive Officer.
■ The LWQMP shall include a list of cooperating parties.
• • The LWQMP shall address appropriate water quality monitoring and a
timeline for the implementation of management practices to reduce and
manage nutrient loading to the lake. The timeline shall ensure that the
implementation actions are underway prior to Regional . Board
reconsideration of the TMDL. The LWQMP shall present a
comprehensive management plan and strategy for achieving the LAs at
Machado Lake and attaining numeric targets and beneficial uses. The
LWQMP shall include a schedule for implementation actions.
• The LWQMP shall achieve compliance with the load allocations through
the implementation of lake management strategies to reduce and manage
internal nutrient sources. The lake management implementation actions
may include, but are not limited tothe following:
■ Wetland restoration
• Aeration system
• Hydraulic Lake dredging
• Hydroponic Islands
• Alum treatment
• Fisheries Management
• Macrophyte Management and Harvesting
■ Maintain Lake Level-Supplemental Water
■ The LWQMP shall include a MRP Plan. The MRP shall include a
requirement that the responsible jurisdictions report compliance and non-
compliance with load allocations as part of annual reports submitted to the
Regional Board. Compliance with the load allocations shall be measured
in the lake at two locations, one in the north portion and one in the south.
The average of these two sampling locations shall determine compliance
with the load allocations. MRP protocols may be based on Surface Water
• Ambient Monitoring Program (SWAMP) protocols for water quality
monitoring or alternative protocols proposed by dischargers and approved
by.the Executive Officer.
• A QAPP shall also be submitted to the Regional Board for approval by the
Executive Officer to ensure data quality. The QAPP shall include
protocols for sample collection, standard analytical procedures, and
laboratory certification. The QAPP may be based on SWAMP protocols
for water quality monitoring and quality assurance or alternative protocols
proposed by dischargers and approved by the Executive Officer.
-10-
Attachment A to Resolution No. R08-006
•
TMDL Element Regulatory Provisions •
• The MOA and LWQMP program shall include assurances that it will be
implemented by the responsible jurisdiction.
• Implementation of the LWQMP program should include a Health and
Safety Plan to protect personnel.
The Executive Officer may require a revised assessment under the MOA and
LWQMP:
(a) To prevent nutrients from accumulating or recycling in the lake in
deleterious amounts that impair water quality, contribute to negative
eutrophic conditions or adversely affect beneficial uses;
(b) To reflect the results of nutrient assessment or special studies
Cleanup and Abatement Order or Other Regulatory Order:
Alternatively, responsible jurisdictions may propose, or the Regional Board may
impose, an alternative program which would be implemented through a cleanup
and abatement order, or any other appropriate order or orders, provided the
program is consistent with the allocations, reductions, and schedule described in
Table 7-29.2.
•:• Determination of Compliance with Interim LAs
Responsible parties shall comply with numeric interim LAs or may be deemed
in compliance with the interim LAs through implementation of lake sediment
removal and/or lake management implementation actions in accordance with
the LWQMP schedule as approved by the Regional Board Executive Officer.
II. Implementation and Determination of Compliance with WLAs
WLAs will be incorporated into NPDES stormwater permits.
Stormwater permittees may be deemed in compliance with waste load allocations
by actively participating in a LWQMP and attaining the waste load allocations for
Machado Lake. Stormwater permittees and the responsible party for the lake
may work together to implement the LWQMP and reduce external nutrient
loading to attain the TMDL waste load allocations measured in the lake. .
Alternatively, MS4 Permittees may be deemed in compliance with waste load
allocations by demonstrating reduction of total nitrogen and total phosphorous on
an annual mass basis measured at the stormdrain outfall of the permittee's
drainage area. The annual mass based allocation shall be equal to a monthly
average concentration of 0.1 mg/L TP and 1.0 mg/L TN based on approved flow
conditions. Permittees must demonstrate total nitrogen and total phosphorous
load reductions to be achieved in accordance with a special study workplan
approved by the Executive Officer.
Compliance may also be demonstrated as concentration based monthly averages
- 11 -
Attachment A to Resolution No. R08-006
TMDL Element Regulatory Provisions
for TP and TN measured at the stormdrain outfall of the permittee's drainage
area.
MS4 Permittees shall be required to develop and implement a MRP plan and
TMDL Implementation Plan. The MRP plan shall include a requirement that the
responsible jurisdictions report compliance and non-compliance with waste load
allocations as part of annual reports submitted to the Regional Board.
❖ Determination of Compliance with Interim WLAs
Responsible parties may comply with the numeric interim WLAs or may be
deemed in compliance with the interim WLAs through implementation of external
nutrient source reduction projects in accordance with the TMDL Implementation
Plan schedule as approved by the Regional Board Executive Officer.
The Regional Board may revise these WLAs and the compliance point based on
the collection of additional information developed through special studies or
monitoring conducted as part of this TMDL.
The Regional Board will reconsider the TMDL at 7.5 years from the effective date
based on waterquality monitoring and special studies.
•
-12-
Attachment A to Resolution No. R08-006
TMDL Element , <-- Regulatory Provisions
III. APPLICATION OF ALLOCATIONS TO RESPONSIBLE JURISDICTIONS
Responsible jurisdictions to attain WLAs for this TMDL include but are not limited
to:
• Caltrans
• General Stormwater Permit Enrollees
• MS4 Permittees including:
> Los Angeles County
> Los Angeles County Flood Control District
> Cities of Carson,
> City of Lomita,
> City of Los Angeles,
> City of Palos Verdes Estates,
> City of Rancho Palos Verdes,
> City of Redondo Beach,
> City of Rolling Hills,
> City of Rolling Hills Estates,
> City of Torrance.
The City of Los Angeles, Department of Recreation and Parks is responsible
jurisdiction to implement the assigned Load Allocations for this TMDL.
•
-13-
•
Attachment A to Resolution No. R08-006
•
Table 7-29.2 Machado Lake Eutrophic, Algae, Ammonia, and Odors (Nutrient) 1
TMDL: Implementation Schedule
•
ie gilig N . �° 3 RV gra , i . rigiVtiFfigibrelPINSFM.,44—,4ot r cc ' "Tctd (+
,,Number, ,. *..s., _.,. k A. .....•.. ; .1�i6,.:,'"�*. akn.. ,1J,urisdictionM1 .._di .tends. i.ail
1 Effective date interim waste load (WLA) California Department Effective Date
• and load allocations (LA)for total of Transportation of TMDL
nitrogen and total phosphorus apply. (Caltrans), Municipal
Separate Storm Sewer
System Permittees4
(MS4 Permittees), City
of Los Angeles— • •
• Department of
• Recreation and Parks
2 Responsible jurisdictions shall enter into City of Los Angeles— 1 year from
a Memorandum of Agreement(MOA) Department of effective date of
• with the Regional Board to implement- , Recreation and Parks TMDL
the load allocations.
3 Regional Board staff shall begin Regional Board Staff 1 year from
development of a Clean Up and effective date of •
Abatement Order or other regulatory TMDL
order to implement the load allocations
if an MOA is not established with -
• responsible jurisdictions.
4 Clean Up and Abatement Order or other Regional Board Staff 1.5 years from •
regulatory order adopted by the effective date of
Regional Board if an MOA is not TMDL
• established with responsible •
jurisdictions. The Clean Up and
• Abatement Order or other regulatory •
order shall reflect the TMDL
Implementation Schedule.
5 Responsible jurisdictions whose Caltrans, MS4 One year from
compliance is determined as Permittees effective date of
concentration based WLAs measured at TMDL
end of pipe shall submit a Monitoring
and Reporting Program (MRP) Plan to
the Executive Officer for approval. •
• 6 Responsible jurisdictions shall submit a City of Los Angeles— 1.5 years from
Lake Water Quality Management Plan, Department of effective date of
MRP Plan and Quality Assurance Recreation and Parks TMDL •
Project Plan for approval by the
• Executive Officer to comply with MOA. •
7 Responsible jurisdictions shall submit a Caltrans, MS4 One year from
work plan for optional special study#3 Permittees effective date of
(if responsible jurisdictions choose to TMDL
conduct this special study)for approval
by the Executive Officer.
•
4 Municipal Separate Storm Sewer System (MS4) Permittees that are responsible for discharges
to Machado Lake include: Los Angeles County, Los Angeles County Flood Control District, and
the Cities of Carson, Lomita, Los Angeles, Palos Verdes Estates, Rancho Palos Verdes,
• Redondo Beach, Rolling Hills, Rolling Hills Estates, and Torrance. •
-14 •
-
•
•
Attachment A to Resolution No. R08-006 •
y� •
•
•
7A c 2t .t 7 ,!£.. 3 A a� r 4��w x a .tc.-.'4 z ;'6 s x.x ,�:.) Kt •
,Task Task, _��{ ;` i chili , R P.A4OV AOSIO c yr` alien Date`tt
?Nu_mb_er�. r. :. .�. ,... 11gi .Q._Cu.4,:..[ '..ay�s?._< .; na RMESM a �SIPOs LAttoni ,eAMN,:«n�.x"IV-i�'hht",=.47.642:
8 Responsible jurisdictions shall submit • -Caltrans, MS4 1.5 years from
work plans for optional special studies Permittees, City of Los effective date of
#1 and #2 (if-responsible jurisdictions Angeles—Department TMDL
choose to conduct special studies)for of Recreation and
approval by the Executive Officer. _ Parks
9 Responsible jurisdictions shall begin Caltrans, MS4 Sixty days from
monitoring as outlined in the approved Permittees, City of Los date of MRP •
MRP plan. Angeles— Department Plan approval
• of Recreation and
•
- Parks
10 Responsible jurisdictions shall begin City of Los Angeles— Sixty days from
implementation of Lake Water Quality • Department of date of Lake
Management Plan. Recreation and Parks Water Quality
Management
Plan approval
11 Responsible jurisdictions whose Caltrans, Two years from
compliance is determined as MS4 Permittees effective date of
concentration based WLAs measured at TMDL
end of pipe shall submit a TMDL
Implementation Plan including BMPs to •
address discharges from storm drains.
12 Responsible jurisdictions whose Caltrans, Sixty days from
• . ' • compliance is determined as MS4 Permittees date of
concentration based WLAs measured at Implementation
end of pipe shall begin implementation Plan approval
of BMPs to address discharges from
stormdrains
13 Responsible jurisdictions shall submit City of Los Angeles— Annually—from
annual monitoring reports. The Department of date of Lake
monitoring reports shall include a Recreation and Parks Water Quality
requirement that the responsible Management
•
jurisdictions demonstrate compliance Plan approval
with the MOA. If the MOA and Lake
• Water Quality Management Plan are
not implemented or otherwise do not
•
result in attainment of load •
•
allocations, the Regional Board shall
revoke the MOA and the load . •
•
allocations shall be implemented •
through a Clean Up and Abatement •
Order or other regulatory order.
14 Responsible jurisdictions whose Caltrans, Annually—from
• compliance is determined as MS4 Permittees date of MPR
concentration based WLAs measured at Plan approval.
end of pipe shall submit annual
monitoring reports.
15 Optional Special Study#3 completed Caltrans, MS4 Within 2.5 •
and final report submitted for Executive Permittees • years of
Officer approval. • effective date of
TMDL
• - 15-
•
Attachment A to Resolution No. R08-006 •
•
•
Task'''
` ' FI 4 r ts41, ' Ta, kxoc;!tap' z zr�1 RepppntsibleuG 4 fix°ice ,�
atNURbey . , e f.ttNM .:iatdre n
z : p {
16 Responsible jurisdictions shall submit a Caltrans, MS4 Within 2.5
MRP Plan and TMDL Implementation Permittees years of
Plan for the alternative mass based effective date of
WLA compliance option (if selected),to TMDL
the Executive Officer for approval.
17 Responsible jurisdictions shall begin• Caltrans, MS4 Sixty days from
monitoring and implementing Permittees date of MRP/ •
projects/programs as outlined in the Implementation
•
approved MRP and TMDL Plan approval
•
Implementation Plan for the alternative
mass based WLA compliance option.
18 Responsible jurisdictions whose Caltrans, MS4 Annually—from •
• compliance is determined as mass Permittees date of MPR/
based WLAs measured at end of pipe Implementation
shall submit annual monitoring reports. Plan approval
19 Optional Special Studies completed and Caltrans, MS4 Within 6 years
Special Study final reports submitted for Permittees, City of Los of effective date
Executive Officer approval. • Angeles—Department of TMDL
of Recreation and
Parks
20 Regional Board staff and responsible Regional Board staff 4 years from
jurisdictions will present an Information and responsible effective date of
• Item to the Regional Board on the, jurisdictions TMDL
progress of TMDL implementation
efforts and compliance with
• implementation schedules.
21 5 Year interim total nitrogen WLA and Caltrans, MS4 Within 5 years
LA apply. permittees, City of Los of effective date
Angeles—Department of TMDL
Recreation and Parks
22 Regional Board will reconsider the Regional Board 7.5 years from
• TMDL to include results of optional effective date of
special studies and water quality • TMDL
monitoring data completed by the
responsible jurisdictions and revise •
numeric targets,WLAs, LAs, and the •
implementation schedule as needed.
• 23 Responsible jurisdictions shall achieve Caltrans, MS4 Within 9.5
Final WLAs and LAs for total nitrogen Permittees, City of Los years of
(including ammonia)and total: Angeles—Department effective date of
phosphorus and demonstrate of Recreation and TMDL
• attainment of numeric targets for total •Parks
nitrogen, ammonia, total phosphorus,
dissolved oxygen, and chlorophyll a.
Responsible parties shall demonstrate •
attainment of water quality standards for
total nitrogen, ammonia, total
• phosphorus, dissolved oxygen, and
biostimulatory substances in
accordance with federal regulations and •
state policy on water quality control. ••
. - 16-
STATE WATER RESOURCES CONTROL BOARD
RESOLUTION NO. 2008-0089
APPROVING AN AMENDMENT TO THE WATER QUALITY CONTROL PLAN
FOR THE LOS ANGELES REGION (BASIN PLAN) TO INCORPORATE A
TOTAL MAXIMUM DAILY LOAD FOR EUTROPHIC, ALGAE, AMMONIA, AND
ODORS (NUTRIENTS) IN MACHADO LAKE
WHEREAS:
1. On May 1, 2008, the Los Angeles Regional Water Quality Control Board (Los Angeles
Water Board) adopted Resolution No. R08-006 amending the Basin Plan to incorporate a
total maximum daily load (TMDL) for eutrophic, algae, ammonia, and odors (collectively
referred to as "nutrients") in Machado Lake.
2. The TMDL for nutrients in Machado Lake is designed to protect the municipal water supply,
aquatic life habitat, water contact recreation, and non-contact water recreation beneficial
uses of Machado Lake and to achieve the numeric and narrative water quality objectives set
to protect those uses.
3. The Los Angeles Water Board found that the analysis contained in the Final Project Report,
the California Environmental Quality Act(CEQA) "Substitute Document"for the proposed
Basin Plan amendment, including the CEQA Checklist, the staff report, and the responses to
comments prepared by Los Angeles Water Board staff and Resolution R08-006 adopted by
the Los Angeles Water Board complies with the requirements of the State Water Resources
Control Board's (State Water Board's) certified regulatory CEQA process, as set forth in the
California Code of Regulations, Title 23, section 3775 et seq.
4. The State Water Board finds that in amending the Basin Plan to establish this TMDL, the
Los Angeles Water Board complied with the requirements set forth in sections 13240 and
13242 of the California Water Code. The State Water Board also finds that the TMDL is
consistent with the requirements of federal Clean Water Act section 303(d).
5. The Los Angeles Water Board found that adoption of this amendment would result in no
adverse effect on wildlife, and the amendment would be consistent with the State
Antidegradation Policy(State Water Board Resolution No. 68-16) and federal
antidegradation requirements.
6. The Los Angeles Water Board established a loading capacity, based on the numeric and
narrative water quality objectives provided in the Basin Plan. Compliance with this load will
be based on a 9.5 year implementation schedule.
7. A Basin Plan amendment does not become effective until approved by the State Water
Board and until the regulatory provisions are approved by the Office of Administrative Law
(OAL). The TMDL must also be approved by the U.S. Environmental Protection Agency
(U.S. EPA).
THEREFORE BE IT RESOLVED THAT:
The State Water Board:
1. Approves the amendment to the Basin Plan adopted under Los Angeles Water Board
Resolution No. R08-006.
2. Authorizes the Executive Director or designee to submit the amendment adopted under
Los Angeles Water Board Resolution No. R08-006 to OAL for approval of the regulatory
provisions and to U.S. EPA for approval of the TMDL.
CERTIFICATION
The undersigned Clerk to the Board does hereby certify that the foregoing is a full, true, and
correct copy of a resolution duly and regularly adopted at a meeting of the State Water
Resources Control Board held on December 2, 2008.
AYE: Chair Tam M. Doduc
Vice Chair Gary Wolff, P.E., Ph.D
Arthur G. Baggett, Jr.
Charles R. Hoppin
Frances Spivy-Weber
NAY: None
ABSENT: None
ABSTAIN: None
r
n(ruc
Jeanine Townsend
Clerk to the Board
2
,iE1)sTgr�s
W
.z
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
4<ak,ltc REGION IX
75 Hawthorne Street
San Francisco, CA 94185-3901
Ms. Dorothy Rice
(Executive Director
State Water Resources Control Board
P.O. Box 100
Sacramento, CA 95812-0100
Dear Ms. Rice:
Thank you for submitting the Basin Plan amendment containing total maximum daily
loads (TMDI..,$)to address nutrients in Machado Lake in Los Angeles. The TMDL submittal was
dated December 23, 2008 and supplemental information was provided on March 3, 2009. The
State adopted total nitrogen and total phosphorus TMDLs to address ammonia, algae, odors, and
eutrophic conditions identified on California's 2006 Clean Water Act Section 303(d) list.
Based on EPA's review of the TMDL submittals under Clean Water Act Section
303(d)(2), I have concluded the TMDLs adequately address the pollutants of concern and, upon
implementation, will result in attainment of applicable water quality standards. These TMULs
include wasteload and load allocations as needed, take into consideration seasonal variations and
critical conditions, and provide an adequate margin of safety. The State provided sufficient
opportunities for public review and comment on the TM.DLs and demonstrated how public
comments were considered in the final TMDLs. All required elements are adequately addressed;
therefore, the TMDLs are hereby approved pursuant to Clean Water Act Section 303(d)(2).
The State's submittal also contains a detailed plan for implementing these TMDLs.
Current federal regulations do not define TMI.)Ls as containing implementation plans; therefore,
EPA is not taking action on the implementation plan provided with the TMDLs. However, EPA
generally concurs with the State's proposed implementation approaches.
The enclosed review discusses the basis for this decision in greater detail. I appreciate
the State and Regional Boards' work to adopt these TMDLs and look forward to our continuing
partnership in TMDL development. If you have questions concerning this approval, please call
me at (415) 972-3572 or Peter Kozelka at (415) 972-3448.
Sincerely yours.
/l AtetA-c-A vc
Alexis Strauss
Director, Water Division
Enclosure
cc: T. Egoscue, Los Angeles RWQCB
Printed as Recycled Paper
TMDL Review Checklist
State: California
Waterbodies: Machado Lake
Pollutant(s): Total Phosphorus, Total Nitrogen (including ammonia)
Date of Initial Submittal: December 23,2008
Date Received By EPA: December 29,2008
Dates of Supplemental Submittal(s) and Receipt by EPA: March 3, 2009
EPA Reviewer: Valentina Cabrera-Stagno
1. Submittal Letter:State submittal letter indicates final TMDL(s)for specific water(s)/pollutant(s) were
adopted by state and submitted to EPA for approval under 303(d).
Submittal letter from Elizabeth Haven to Alexis Strauss,dated December 23,2008. State submittal was
completed March 3,2009. The Los Angeles Regional Water Quality Control Board (RWQCB)adopted
the TMDLs to address ammonia, algae, odors and eutrophic [conditions] impairments at Machado Lake
on May 1,2008 (RWQCB Resolution# R4-2008-006). The submittal addresses ammonia, algae,odors,
and eutrophic [conditions] impairments identified on the State's 1998,2002 and 2006 Clean Water Act
Section 303(d) lists. The State Water Resources Control Board(SWRCB)approved these TMDLs on
December 2, 2008 (SWRCB Resolution #2008-0089). The State Office of Administrative Law(OAL)
approved these TMDLs on February 19,2009(OAL File#2009-0106-01 S). The submittal package
contained the final Regional Board adopted Resolution,final State Board adopted Resolution, OAL,
approval, final Technical Staff Report and Responses to comments.
2.TMDLs Included: The submittal clearly identifies the water segments and pollutants or stressors for
which 7MDLs were developed. The submittal should include the water segment identifier(e.g., MID
code)for each segment addressed. The submittal should clearly identify the TMDLs adoptedfor
currently 303(ci) listed waterbody pollutant combinations. It should also clarify if TMDLs were adopted
for new impairment findings (by waterbody-pollutant combinations) that do not exist on the current 303(d
list. If appropriate. the submittal should describe any assessment decisions that may have resulted in
non-impairment status fir water%pollutant combinations that exist on State's most current 303(d) list.
These Machado Lake TMDLs were adopted to address the following impairments identified on the state's
1998,2002 and 2006 303d lists:
• Ammonia
• Algae
• Odors
• Eutrophic [conditions]
These TMDLs address all the water body-pollutant combinations identified in Analytical Unit# 76 of the
Heal the Bay consent decree.
I
I3. Water Quality Standards Attainment: TMDL and associated allocations are set at levels adequate
Ito result in attainment of applicable water quality standards.
(See Staff Report, dated May 1, 2008, pp.24-27)
The Staff Report identified designated beneficial uses for recreation(RECI and REC2), aquatic life
(WARM, WILD, RARE, and WET)and water supply(MUN)for Machado Lake. The TMDLs are
designed to protect these beneficial uses and implement the existing narrative water quality objectives for
biostimulatory substances and taste and odor as well as the numeric water quality objectives for dissolved
oxygen and ammonia. Machado Lake is identified as impaired by ammonia, algae,odors and eutrophic
[conditions) on the state's 1998,2002 and 2006 303d lists.
The State reasonably concluded that the specified load and wasteload allocations will lead to attainment
of the applicable water quality objectives.
4.Numeric Target(s):Submittal describes applicable water quality standards, including beneficial uses,
applicable numeric and/or,narrative criteria. Numeric water quality targets)for TMDL identified and
adequate basis for target(s)as interpretation of water quality standards is provided.
(See Staff Report,pp. 32-36 and Basin Plan Amendment Attachment A Table 7-29.1 pp.2-3)
The table below shows the numeric targets in these TMDLs.The total phosphorus target is based on upon
US EPA Nutrient Criteria Technical Guidance Manual for Lakes and Reservoirs.The total nitrogen target
is based on a ratio of total nitrogen to total phosphorus of 10.The chlorophyll a target is based on EPA
guidance and the Carlson Trophic Status Index. The numeric targets for ammonia and dissolved oxygen
are based on existing State numeric water quality objectives.
Indicator Numeric Target
Total Phosphorus 0.1 mg/L monthly average
Total Nitrogen 1.0 mg/L monthly average
Ammonia—N 5.95 mg/L one-hour average
Ammonia—N 2.15 mg/L 30 day average
Dissolved Oxygen 5 ing/L single sample minimum measured 0.3m
above the sediments
Chlorophyll a 20 ug l.,monthly average
The State's approach is a reasonable and environmentally protective approach to account for uncertainty
in the relationship between pollutant loading levels and attainment of water quality standards,as required
by CWA Section 303(d)(1)(C).
5. Source Analysis: Point, non-point, and background sources of pollutants of concern are described,
including the magnitude and location of sources. Submittal demonstrates all significant sources have
been considered.
(See Staff Report, pp. 37-47 and Basin Plan Amendment Attachment A Table 7-29.1 pp.3)
The TMDL analysis examined all existing and relevant information concerning the sources of nutrients
impairing Machado Lake, including monitoring data and a sediment nutrient flux study.
The major nonpoint source of nutrients to Machado Lake is internal nutrient loading(nutrient flux from
2
sediments). Atmospheric deposition is also a nonpoint source of total nitrogen. Nutrient loads from wind
resuspension, bioturbation,birds and general surface runoff are minor sources.
The point sources of nutrients into Machado Lake are stormwater discharges from the municipal separate
storm sewer system(MS4),California Department of Transportation (Caltrans),and general construction
and industrial stormwater discharges.
The TMDLs adequately considered all significant sources by examining data from all relevant sources.
The TMDLs sufficiently described all sources of impairments.
6. Loading Capacity Linkage Analysis:Submittal describes relationship between numeric target(s)and
identified pollutant sources. Submittal clearly identifies loading capacity. For each pollutant, describes
analytical basis,for conclusion that sum of allocations and margin of safety does not exceed the loading
capacity of the receiving water(s).
(See Staff Report, pp.47-56 and Basin Plan Amendment Attachment A Table 7-29.1 pp.3)
The Regional Board used the Numeric Nutrient Endpoint BATHTUB Spreadsheet Model,developed by
Tetra Tech for US EPA,to establish the linkage between nutrient loading to Machado Lake and the
desired water quality conditions.The eutrophication related water quality conditions arc expressed in
terms of total phosphorus,ortho-phosphorus,total nitrogen, inorganic nitrogen,chlorophyll a,
transparency(Secchi depth)and hypolimnetic oxygen depletion rates. The linkage analysis demonstrates
that assigning allocations for total nitrogen and total phosphorus will address the following impairments:
excessive algae,odors,and eutrophic conditions. The total nitrogen allocation includes ammonia, since
this parameter is measured within total kejldahl nitrogen(TKN).
The State's analysis sufficiently describes the link between the numeric targets and the pollutant sources.
7.TMDL and Allocations:
T19DL-.- S'ubmiita/identifies the total allowable load, which is set equal to or less than the loading
capacity. TMDL is expressed in terms of mass-bused, concentration-based or other equivalent
approaches that are consistent with federal requirements. If TMDL has seasonal features then please
describe.
Allocations—Submittal identifies appropriate wasteload allocations for all point sources and load
allocations for till non-point sources. If point sources are present, submittal identifies existing NPDES
permits by name and number. if no point sources are present. wasteload allocations are zero. if no non-
point sources are present. then load allocations are zero. Allocations are expressed in terms of mass-
based. concentration-based or other equivalent approaches and the submittal explains why it is
reasonable and appropriate to express the TMDL in those terms.
TMDLs and allocations should he expressed in terms of daily time steps. If the TMDL and/or allocations
are also expressed in terms other than mass loads per clay, the submittal explains why it is reasonable
and appropriate to express the 7MDL in those terms.
(See Staff Report, pp.56-60 and Basin Plan Amendment Attachment A Table 7-29.1 pp.3-5)
The TMDLs include wasteload allocations for point sources and load allocations for non point sources.
Wasteload and load allocations are concentration based allocations of 0.1 mg/L and 1.0 mg/L as monthly
averages for total phosphorus and total nitrogen(TKN+NO3-N +NO2-N), respectively. TMDLs,
wasteload and load allocations are not specified for chlorophyll a,dissolved oxygen or ammonia because
the total phosphorus and total nitrogen allocations should achieve these targets as well.
Wasteload Allocations
Point source discharges of nutrients to Machado Lake include MS4 permittees, Caltrans, General
Construction and Industrial stormwater permits. l..,os Angeles County MS4 permittees that are responsible
for discharges to Machado Lake include: Los Angeles County, Los Angeles County Flood Control
District,and the Cities of Carson, Lomita, Los Angeles, Palos Verdes Estates, Rancho Palos Verdes,
Redondo Beach, Rolling Hills, Rolling Hills Estates, and Torrance(Los Angeles County NPDES No.
CAS 004001). Caltrans(NPDES Permit No.CAS 000003),General Industrial Stormwater Permit
Enrollees (NPDES Permit No. CAS000001)and General Construction Stormwater Permit Enrollees
(NPDES No. CAS000002)also received wasteload allocations. All wasteload allocations are
concentration based allocations of 0.1 mg/L and 1.0 mg/L as monthly averages for total phosphorus and •
total nitrogen(TKN +NO3-N +NO2-N), respectively. An estimated 73% reduction to total phosphorus in
stormwater loadings is needed to achieve these allocations.
Load Allocations
Load allocations are concentration based allocations of 0.1 mg/L and 1.0 mg/L as monthly averages for
total phosphorus and total nitrogen (TKN +NO3-N+NO2-N), respectively. A load allocation is assigned
to internal nutrient loading from sediments(City of Los Angeles Department of Recreation and Parks).
An estimated 90%reduction in total phosphorus and 63%reduction in total nitrogen loadings is needed to
achieve this allocation.
Interim limits for wasteload allocations and load allocations are included to allow sufficient time for
dischargers to set up implementation measures necessary to achieve the final load allocations.
Based on the information in the Staff Report and the Basin Plan Amendment, EPA concludes that the
TMDLs include appropriate wasteload and load allocations that are consistent with federal requirements.
8. Margin of Safety: Submittal describes explicit and/or implicit margin of safe/v for each pollutant.
(See Staff Report, pp.61 and Basin Plan Amendment Attachment A Table 7-29.1 pp.5-6)
These TMDLs include an implicit margin of safety through conservative assumptions.Conservative
numeric targets were selected by establishing the targets under a critical lake volume. Likewise, the
wasteload and load allocations are based on a constant value for internal loading. Moreover, the lake
i conditions under which the loading capacity was developed were based on dry weather critical conditions
when the lake level is reduced and therefore loading capacity is reduced.
EPA considers this a permissible and appropriate way of dealing with uncertainty concerning the
relationships between wasteload allocations, load allocations and water quality.
9.Seasonal Variations and Critical Conditions:Submittal describes method for accounting,for
seasonal variations and critical conditions in the TMDLA)
(See Staff Report, pp.61-62 and Basin Plan Amendment Attachment A Table 7-29.1 pp.6)
External loads to Machado Lake generally occur during winter and spring months in conjunction with
storm events. The critical condition for the attainment of beneficial uses at Machado Lake occurs during
the summer months when sediments release nutrients, lake level decreases and algal respiration is highest.
I The TMDLs account for seasonal and critical conditions during the summer months by assigning a load
4
allocation to the lake sediments and requiring a reduction in this source of nutrients to the lake,and by
assigning wasteload allocations to urban stormwater dischargers year-round.
The TMDLs adequately account for the seasonal variations and critical conditions by establishing loading
capacity and allocations that attain water quality objectives during the critical summer months.
10.Public Participation:Submittal documents provision of public notice and public comment
opportunity:and explains how public comments were considered in the final TMDL(s).
(See Regional Board's Public Meetings February 5, 2007,June 6,2007 and October 25,2007;Regional
Board's CEQA Scoping Meeting on September 12,2007; Regional Board's Notice of Public Hearing on
May 1,2007; State Water Board's Notice of Opportunity for Public Comment, State Water Board's
December 2,2008 Meeting Agenda,and Regional and State Board Response to Comments documents)
The Regional and State Boards provided public notice and opportunities to comment on the draft and final
TMDLs through newspaper notices, mailings and via formal hearings.The State Board also held several
public meetings between February 5,2007 and October 25.2007 for these TMD[.,s. Public comments
were received in writing and in oral testimony.
The State demonstrated that it provided sufficient opportunities for public comments and considered
public comments in its final decision by providing reasonably detailed responsiveness summaries.
11.Technical Analysis:Submittal provides appropriate level of'technical analysis supporting TMDL
elements.
The TMDL analysis provides a thorough review and summary of available information concerning
ammonia,algae,odors and eutrophication impairments in Machado Lake. We conclude the Regional
Board was reasonably diligent in its technical analysis of nutrient related impairments in Machado Lake.
12. Reasonable Assurances: If wasteload allocations are made less stringent based on inclusion of load
allocations that reflect nonpoint source reductions, submittal describes how there are reasonable
assurances that necessary nonpoint source reductions will occur.
Not Applicable
13. Other: Table for clari fjiing submittal,for TMDL waterbodv-combinations for 303(d)listed water.
new impairment findings or non-impairment,findings.
Not applicable.
5
State of California
Office of Administrative Law
In re: NOTICE OF APPROVAL OF REGULATORY
State Water Resources Control Board ACTION
Regulatory Action: Government Code Section 11353
Title 23, California Code of Regulations OAL File No. 2009-0106-01 S
Adopt sections: 3939.35
Amend sections:
Repeal sections:
This action is the State Water Resources Control Board's approval of the Los Angeles
Regional Water Quality Control Board's adoption of Resolution R08-006 on May 1,
2008, which revised the Los Angeles Region Basin Plan by establishing a Total
Maximum Daily Load (TMDL)for Eutrophic, Algae, Ammonia, and Odors (Nutrient) in
Machado Lake.
OAL approves this regulatory action pursuant to section 11353 of the Government
Code.
Date: 2/19/2009 ;/
Gordon ' ou g
Senior S -ff C•unsel
For: SUSAN LAPSLEY
Director
Original: Dorothy Rice
Copy: Nick Martorano
EXHIBIT E
Palos Verdes Peninsula Coordinated Monitoring Plan
in Compliance with the Machado Lake Nutrient Total Maximum Daily Load
Palos
Verdes
Peninsula
Coordinated
Monitoring
Plan
In Compliance with the
Machado Lake
Nutrient Total
Maximum Daily Load
February 1, 2011
Prepared by the Cities of Rolling Hills Estates, Rolling Hills, Rancho Palos Verdes,
and Palos Verdes Estates
Machado Lake Nutrient TMDL Palos Verdes Peninsula Coordinated Monitoring Plan
1. Introduction 6
1.1. Background 6
1.2. Geographic Description of Palos Verdes Peninsula 7
1.3. Waste Load Allocation Compliance 9
2. Monitoring Program Design 11
2.1. Criteria and Methodology for Monitoring Site Selection 11 •
2.1.1. Solano Subdrainage Area 15
2.1.2. Valmonte/Ferncreek Subdrainage Area 15
2.1.3. Ranchview/Chadwick Canyon Subdrainage Areas 18
2.1.4. RDD 275 Subdrainage Area—RHE City Hall Monitoring Site 20
2.1.5. Agua Magna/Sepulveda/Blackwater Canyon Subdrainage Area—Lariat 21
Monitoring Site
2.1.6. Project 77 Storm Drain Subwatershed within Palos Verdes Peninsula 22
2.2. Monitoring Schedule and Frequency 23
2.2.1. No Flow/Low Flow Observation Sites 23
2.2.2. Dry Weather Sampling 23
2.2.3. Wet Weather Sampling and Flow Observations 23
2.3. Interim Waste Load Allocation Source Tracking Monitoring Investigation 24
3. Field Monitoring Methods and Procedures 26
3.1. Water Quality Sampling Parameters 26
3.2. Sampling and Flow Measurement Methods 26
3.3. Monitoring Site Procedures 26
3.3.1. Sampling Preparations 26
3.3.2. Arrival at Monitoring Site 28
3.3.3. Field Conditions Sheet 28
Page I 1 February 1,2011
Machado Lake Nutrient TMDL Palos Verdes Peninsula Coordinated Monitoring Plan
3.4. Sampling in Open Channels or Creeks/Streams Procedures 28
3.5. Sampling in Subsurface Storm Drains Procedures 29
3.6. No Sample Taken Procedures 30
3.6.1. Low Flow Conditions 30
3.6.2. Site Inaccessibility Due to Storm Event 30
3.6.3. Site Inaccessibility Due to Temporary or Physical Obstruction or Condition 30 .
3.6.4. Site Inaccessibility Due to Ownership Change 31
3.7. Corrective Action for Field Measurements 31
3.8. Sample Management 31
3.8.1. Container Type,Container Volume,Sample Preservation,and Holding lime 31
3.8.2. Sample Naming Methodology 32
3.8.3. Chain of Custody Procedures 33
3.9. Health and Safety Concerns 33
3.9.1. Traffic Hazards and Traffic Control 33
3.9.2. Inclement Weather 34
4. Quality Assurance and Quality Control(QA/QC) 35
4.1. Field Sampling QA/QC Procedures 35
4.1.1. Trip Blank 35
4.1.2. Equipment Blank 35
4.1.3. Duplicate Samples 36
4.1.4. Collection of Sample for Laboratory Spike and Duplicate Analyses 36
4.1.5. Training Sessions and QA/QC Review 36
4.2. Laboratory QA/QC 36
4.2.1. Laboratory Performance Measurements 37
4.2.2. Reporting of Results 38
Page 12 February 1,2011
Machado Lake Nutrient TMDL Palos Verdes Peninsula Coordinated Monitoring Plan
4.3. Quality Assurance Manager 38
5. Data Analysis and Reporting 39
5.1. Annual Monitoring Reports 39
5.2. Receiving Waters limitation Compliance Reports 40
Appendix A Field Data Sheet 41
Appendix B Example Chain of Custody Form 44 .
Appendix C Monitoring Site Summary 46
Page 13 February 1,2011
Machado Lake Nutrient TMDL Palos Verdes Peninsula Coordinated Monitoring Plan
List of Figures
Figure 1.1 Major Land Uses Characterizing the Palos Verdes Peninsula 8
Figure 2.1 Water Quality Monitoring Sites and Associated Sub-Drainage Areas 13
Figure 2.2 Palos Verdes Peninsula Land Use by Subdrainage Areas 14
Figure 2.3 Solano Monitoring Site 15
Figure 2.4 Looking West from Ernie Howlett Park at Ferncreek Converging from Left and Valmonte 16 .
Canyon from Right
Figure 2.5 Valmonte Monitoring Site 17
Figure 2.6 Valmonte Canyon Tier 2 Monitoring Site 17
Figure 2.7 Upper Ranchview Canyon 18
Figure 2.8 Ranchview Canyon Tier 2 Site 19
Figure 2.9 Chadwick Canyon Tier 2 Site Entering Subsurface Storm Drain 19
Figure 2.10 Looking South/Upstream RDD 275 Along Crenshaw Boulevard 20
Figure 2.11 RHE City Hall Monitoring Site at Manhole Behind Rolling Hills Estates City Hall 21
Figure 2.12 Lariat Monitoring Site at Drainage Structure Collecting Flow From Agua 22
Magna/Sepulveda/Blackwater Canyons
Figure 2.13 No/Low Flow Site Classification Decision Process 24
Page 14 February 1,2011
Machado Lake Nutrient TMDL Palos Verdes Peninsula Coordinated Monitoring Plan
List of Tables
Table 1.1 Potential and Existing Beneficial Uses of Machado Lake as Outlined in the Basin Plan 7
Table 1.2 Interim and Final Waste Load Allocations as Specified in the Machado Lake Nutrient 9
TMDL
Table 1.3 Compliance Schedule for Option 2:End-of-Pipe Concentration-Based Waste Load 10
Allocations
Table 2.1 Interim and Final Waste Load Allocations for Storm Drain Discharges 25
Table 2.2 Preliminary List of Tier 2 Monitoring Sites 25
Table 3.1 Water Quality Constituents To Be Sampled 26
Table 3.2 Sampling Equipment Inventory 27
Table 3.3 Water Quality Sampling Method,Bottle Types,Preservatives,and Holding Time 32
Table 3.4 Sample Nomenclature 32
Table 4.1 Field QA/QC Sample Collection Requirements 36
Table 4.2 Analytical Methods and Limits 37
Page 1 5 February 1, 2011
Machado Lake Nutrient TMDL Palos Verdes Peninsula Coordinated Monitoring Plan
February 1,2011
1. Introduction
The Palos Verdes Peninsula Coordinated Monitoring Plan(Plan)was developed in compliance with the
Machado Lake Eutrophic,Algae,Ammonia,and Odors(Nutrient)Total Maximum Daily Load (TMDL)1.
The Nutrient TMDL lists eleven responsible parties tributary to Machado Lake. Among the responsible
parties listed are the cities of Rancho Palos Verdes, Palos Verdes Estates,Rolling Hills,and Rolling Hills
Estates,which together constitute the Palos Verdes Peninsula(Peninsula Cities). The unique
characteristics and isolated geographic setting of the Palos Verdes Peninsula(Peninsula)encouraged a
collaborative approach from these Peninsula Cities. This document is the result of that collaboration.
Not participating in this plan are the cities of Carson,Lomita,Los Angeles,Redondo Beach,and
Torrance,Caltrans,and the unincorporated areas of the County of Los Angeles(County). These agencies
have indicated that they will be submitting separate Monitoring and Reporting Plans.
The purpose of this document is to establish a plan to monitor and assess the water quality of
discharges exiting the Peninsula. The Plan describes several representative monitoring sites for the
Palos Verdes Peninsula drainage system which are situated at the furthest accessible downstream
locations of this system before it exits the Peninsula. These sites will be monitored for TMDL
compliance as described herein. Results from this monitoring will be beneficial in determining the
scope of work needed for the implementation of Best Management Practices(BMPs)to be used in order
to achieve compliance with the water quality objectives set forth in the Machado Lake Nutrient TMDL.
1.1. Background
Machado Lake is located in the City of Los Angeles'Ken Malloy Harbor Regional Park. The park is
situated to the west of the Harbor(110) Freeway and east of Vermont Avenue. The park is bounded by
the Tosco refinery to the south and Pacific Coast Highway to the north. Machado Lake is approximately
40 acres in size and averages approximately 3 feet in depth. It supports a diverse range of wildlife
including several threatened and endangered species. The Machado Lake Subwatershed is located
within the harbor portion of the larger Dominguez Channel Watershed. Machado Lake receives urban
and stormwater runoff from a subwatershed area of approximately 20 square miles consisting of nine
incorporated cities,Caltrans highways and roads,and areas of unincorporated County land. Water from
Machado Lake overflows a dam located at its southern end before entering the ocean through the
Harbor Outflow.
Machado Lake is listed on the 1998,2002,and 2006 Clean Water Act 303(d)lists of impaired water
bodies due to eutrophic conditions,algae and odors. The listed impairments are caused by the
overloading of nutrients,such as nitrogen and phosphorus, resulting in excessive algal growth which
leads to increased turbidity, decreased levels of oxygen,and odor problems. These occurrences affect
the recreational,aesthetic,and ecological functioning of Machado Lake. The Water Quality Control Plan
for the Los Angeles Region(Basin Plan)identifies seven existing(E)or potential(P) beneficial uses for
Machado Lake.
1 State Water Resources Control Board, Los Angeles Region Resolution No.R08-006,Amendment to the Water
Quality Control Plan—Los Angeles Region to incorporate the Total Maximum Daily Load for Eutrophic,Algae,
Ammonia,and Odors(Nutrient)in Machado Lake
Page 1 6
Machado Lake Nutrient TMDL Palos Verdes Peninsula Coordinated Monitoring Plan
February 1, 2011
Table 1.1. Potential and Existing Beneficial Uses of Machado Lake as Outlined in the Basin Plan
Waterbody MUN REC1 REC2 WARM WILD RARE WET
(Municipal (Water (Non- (Warm (Rare, (Endangered (Wetland
Water Contact Contact Freshwater Threatened, Species) Habitat)
Supply) Recreation) Water Habitat) or
Recreation) Endangered
Species)
Machado P E E E E E E
Lake
The Clean Water Act section 303(d) requires the prioritization and development of TMDLs to address
impairments and outline plans to restore the beneficial uses of listed water bodies. TMDLs require the
reduction of pollutant loading by assigning waste load allocations, load allocations, and numeric targets
to responsible parties which must be met at set interim and final compliance dates. The TMDL
addressing the nutrient impairment of Machado Lake was adopted by the State Water Resources
Control Board, Los Angeles Region (Regional Board) on May 1, 2008. It was subsequently approved by
the United States Environmental Protection Agency and became effective on March 11, 2009. This
TMDL sets forth stringent numerical limits for nitrogen and phosphorus, as well as numerical targets for
ammonia, dissolved oxygen and chlorophyll a which will help assess the overall water quality in the lake.
1.2. Geographic Description of Palos Verdes Peninsula
The Peninsula is situated in the southwestern portion of the Machado Lake Subwatershed atop the
Palos Verdes Hills which are bounded to the north by Torrance,to the east by City of Los Angeles, and to
the south and west by the Pacific Ocean. The Peninsula consists of the four incorporated cities of
Rancho Palos Verdes, Palos Verdes Estates, Rolling Hills, and Rolling Hills Estates along with areas of
unincorporated County land. The Peninsula Cities are all very similar in topography and land usage. The
major land use designation on the Peninsula is residential. There are also significant portions of open
space and soft bottom canyons. There is one commercial district and several areas of institutional land.
There are also notable areas where horse uses exist. Figure 1.1 depicts the major land uses that
characterize the Peninsula. There is a large drainage divide which dissects the Peninsula from the
northeast to the southwest with the westerly portion draining into the Santa Monica Bay. The portion
of the Peninsula which drains to Machado Lake consists of approximately 5.63 square miles, which is
about 25% of the Machado Lake Subwatershed drainage area. This drainage flows in an easterly or
northeasterly direction, contributing flow to three of the four major drainage systems entering Machado
Lake (i.e. Wilmington Drain, Project 77 and Project 510). Drainage from the Peninsula Cities is conveyed
via the natural soft bottom canyon systems in conjunction with structured storm drain systems. These
systems are intertwined and cross-connected warranting a Peninsula-wide coordinated approach to
end-of-pipe monitoring.
Page 17
Machado Lake Nutrient TMDL Palos Verdes Peninsula Coordinated Monitoring Plan February 1, 2011
Yry w� "'TT 4 * r .�ir .,�;- f' 7 ,,• i,i T�YIir I!�J• �.-�r a l'e!., ^ir• op
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Legend Palos Verdes Peninsula ' .1.1 �" '
Lone u.• 1. ICC,ee••.tv,
m...... ...,.-, Coordinated Monitoring Plan ,,, r
t..r.,, ;r.flea,A.,eVmN _ sse
'Comm., eninsula Cities Land Use within 1 ti
,
,„in.,p.il fc•N., Machado Lake Sub-Watershed P.
limb
P„pain Faeilm.c
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,.,•,pis Data Sauces LACDPW Mapping and Property Management Dmslon
USDA FSA•Aerial Photography Field Orrice,USGS DOO.
,,meal X0,-I''•'a'" Southern Cahlornia Association of Governments Land Use.'2005
Figurel.1 Major Land Uses Characterizing the Palos Verdes Peninsula
•
Page 18
Machado Lake Nutrient TMDL Palos Verdes Peninsula Coordinated Monitoring Plan
February 1,2011
1.3. Waste Load Allocation Compliance
The Nutrient TMDL for Machado Lake outlines three options for compliance. It assigns waste load
allocations,or limitations on pollutant discharges contained in storm drain discharges,to responsible
parties which drain to Machado Lake. Interim and final waste load allocations [Table 1.2] can be
demonstrated through one of the following methodologies:
• Concentration-based waste load allocations with in-lake monitoring
• Concentration-based waste load allocations with monitoring at the end of the ,
responsible party's drainage system (end-of-pipe)
• Mass-based waste load allocations with end-of-pipe monitoring
Table 1.2. Interim and Final Waste Load Allocations as Specified in the Machado Lake Nutrient TMDL
Compliance Date Total Phosphorus Total Nitrogen
March 11, 2009 1.25 mg/L 3.5 mg/L
March 11,2014 1.25 mg/L 2.45 mg/L
September 11, 2018 0.1 mg/L 1 mg/L
The Peninsula Cities met and determined that the best option for compliance was Option 2,
concentration based waste load allocations with end-of-pipe monitoring. However,the systems which
convey drainage from the Peninsula Cities are intertwined and cross-connected. Drainage from one city
generally flows through at least one of the other three cities before exiting the Peninsula. It would be
difficult and redundant for each city to monitor its own drainage independent of the other Peninsula
Cities. For this reason, it was appropriate for the Peninsula Cities to coordinate efforts in order to
comply with the Nutrient TMDL. The Peninsula Cities decided to determine compliance with
concentration-based waste load allocations by choosing monitoring sites at the termini of the shared
Peninsula drainage system. This Plan satisfies the first deliverable requirement outlined in the
compliance schedule for the selected approach [Table 1.3]. Monitoring in accordance with this Plan will
continue until the Peninsula Cities have established compliance with final waste load allocations. Once
compliance with final waste load allocations is established,the results of this monitoring plan and other
available information may be used to revise the amount of monitoring required to demonstrate
continued TMDL compliance under a revised monitoring plan or other Regional Board order.
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Machado Lake Nutrient TMDL Palos Verdes Peninsula Coordinated Monitoring Plan
February 1, 2011
Table 1.3. Compliance Schedule for Option 2: End-of-Pipe Concentration-Based Waste Load Allocations
Compliance Date TMDL Requirement
March 11, 2009 Meet 15' interim waste load allocations (shown in Table 2)
March 11, 2010 Submit Monitoring and Reporting Plan (MRP)to the Regional
Board for approval
60 days from date of MRP approval Begin monitoring as outlined in MRP
Annually from date of MRP approval Submit annual monitoring reports
March 11, 2011 Submit Implementation Plan (IP) to Regional Board for approval
60 days from date of IP approval Begin implementation as outlined in IP
March 11, 2014 Meet 2nd interim waste load allocations (shown in Tablet)
September 11, 2016 TMDL re-opener period
September 11, 2018 Meet final waste load allocations and numeric targets (shown in
Table 2)
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Machado Lake Nutrient TMDL Palos Verdes Peninsula Coordinated Monitoring Plan
February 1, 2011
2. Monitoring Program Design
Drainage on the Peninsula is conveyed via a network of natural soft-bottom canyons augmented by
improved storm drain structures in the more developed areas.A drainage divide running northwest to
southeast along the crest of the Peninsula separates the Machado Lake watershed from the Santa
Monica Bay watershed.Within the Machado Lake watershed the canyons convey stormwater flow in an
easterly or northeasterly direction.Stormwater runoff from the four incorporated cities on the
Peninsula is closely intertwined and is therefore conducive to the implementation of a coordinated
monitoring plan.
2.1. Criteria and Methodology for Monitoring Site Selection
The Peninsula Cities have selected monitoring sites that are representative of the drainage from each of
the Cities' land uses on the Peninsula tributary to Machado Lake.These monitoring sites have been
selected to ensure that:
• Each city has drainage tributary to at least one sampling location
• Each city has each of its major land use/zoning types represented in the tributary area to at least
one location
• Taken together the sampling locations are representative of major Peninsula land uses and
development intensity,e.g.,commercial, residential with curb-and-gutter, residential with soft
bottom canyons,equestrian use,schools/ball fields,open space, parks,etc.
• Monitoring could be conducted in a safe manner considering traffic and stormwater access
conditions
In order to establish appropriate and representative monitoring locations,subdrainage areas were
delineated based on desktop examination of County GIS-based drainage maps,topographic drainage
maps and aerial photographs. Several potential monitoring locations near the foot of each of the major
subdrainage areas on the Peninsula were identified based on this desktop analysis. Final monitoring
sites were selected based on field reconnaissance to identify representative locations that could be
safely accessed for monitoring.
The Machado Lake subdrainage areas and monitoring locations are discussed in the following
subsections in order progressing from northwest to southeast across the Peninsula.Taken together,the
subdrainage areas and monitoring locations proposed in this plan directly monitor 2,108 acres within
the total 3,608 acres of the Peninsula Cities'tributary area to Machado Lake. These subdrainage areas
and monitoring locations together will provide direct monitoring of all the significant land uses tributary
to Machado Lake in the four incorporated cities on the Peninsula.Currently,of the 1,500 acres not
directly monitored,707 acres is tributary to a local infiltration basin,the Chandler Quarry pit, which
does not discharge to Machado Lake unless an unusually large storm such as a 50-year storm occurs,
effectively isolating that subdrainage area from Machado Lake. The remaining 800 acres of Machado
Lake tributary area which are not directly monitored by one of the proposed monitoring sites will be
indirectly monitored by a surrogate monitoring location with similar land use and development
intensity. Figure 2.1 Water Quality Monitoring Sites and Associated Sub-Drainage Areas depicts the
Page 111
Machado Lake Nutrient TMDL Palos Verdes Peninsula Coordinated Monitoring Plan
February 1,2011
subdrainage areas and monitoring sites. These same subdrainage areas are shown overlaid onto the
land use map in Figure 2.2 for ease of reference in the subsequent discussions of each monitoring site.
This figure shows which land uses are captured within each subdrainage area.
Page 112
Machado Lake Nutrient TMDL Palos Verdes Peninsula Coordinated Monitoring Plan February 1, 2011
y, "�, 7C�::'1,11,. . - t,.' .�.�,L• y' �v t � itilitr
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hlonitorin Sites I:: • 1I ,
9 Machado Lake Sub-Watorshcd Coordinated Monitoring Plan 'I L
. Salon Solana Sub-Drainage Area C II
1-
l7) Valmonte Valmonte Sub-Drainage Aran Water Qualty Monitoring Sites and "1 I I r-
_ i t-- ' J
I'i Ranchvlew RanchviewfChadvAck Sub-Drainage Aron Associated Sub-Drainage Areas ri --•c1'•)-, C
IJ Chncwlck RHE City Hall Sub-Drainage Area I i ' -,I h
. RITE City Hall Lariat Sub-Dramago Area
'J Lanni ChandlerSub•DroinagoArea HI •r nr�fl�•i,ul- ''
Observation Point I �I City Boundary Data Sauces�LACDPW Mapping and Property Management Divisionr�-�-••
USDA/ESA-Aerial Photography Field Otsur USGS DOG.
IJ Chnrdlar U S Department of Agriculture.Natural Resources Conservation Service
national Cartography&Geospatlal Center .
Figure 2.1 Water Quality Monitoring Sites and Associated Sub-Drainage Areas
•
Page 113
Machado Lake Nutrient TMDL Palos Verdes Peninsula Coordinated Monitoring Plan February 1, 2011
i •;•t yhpy..=5•,4 i-taw-�.hr a- - Lrr 7 wl(' i.•. ,y ,+4tJ-e I1t (Ati p i,;. " .,.4. .~ --.b
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Palos Verdes Peninsula
1,•Ilk,L}•i",.A.r.M 14.1•wa1
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o"^�.�..... • e'� Coordinated Monitoring Plan , r
u.•aer..•%Nlo•r.••1,as.e.lsr l• an..n.,.. Land Use by
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pan Y••011 • PUS at,1111 Subdrainage Areas �
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{.t.,Ih,.,*,dm I}'CTna••
In.nrnann« Data Sauces'.LAC DPW Mapping and Property Management Division.
U
1..,re.a. c„Mm SDA,FSA•Aerial Photography Field Office,USGS 0OO.
Southern Caldmnta Association of Governments Land Use.2005 __ _ ._. _... ._. ._.__;
Figure 2.2 Palos Verdes Peninsula Land Use by Subdrainage Areas
Page 114
Machado Lake Nutrient TMDL Palos Verdes Peninsula Coordinated Monitoring Plan
February 1, 2011
2.1.1. Solano Subdrainage Area
A portion of the Peninsula drains to the Walteria Lake storm water detention basin located in Torrance
via the City of Torrance Project No. 8102 storm drain. This subdrainage area is approximately 144 acres
located entirely within Palos Verdes Estates and situated east of Palos Verdes Drive North,south and
west of the City of Palos Verdes Estates' border with the City of Torrance, and north of Via Valmonte
[Figure 2.3]. The primary land use in this subdrainage area is residential with curb-and-gutter. There is
one elementary school located in the subdrainage area. The curb-and-gutter system (storm drain
system) in the subdrainage area collects storm water runoff as well as dry-weather runoff and
discharges flow through the subsurface Miscellaneous Transfer Drain (MTD) 1495-2 near Via Verderol
into the City of Torrance. Monitoring will occur in this storm drain as the flow here is representative of•
runoff from the entire subdrainage area. Figure 2.3 shows the manhole atop of the MTD 1495-2 at the
Solano monitoring site to where the flow discharges from the Peninsula into the City of Torrance.
-� fi •s . 1 , � :moi �-4 �" .
•
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Figure 2.3 Solano Monitoring Site
2.1.2. Valmonte/Ferncreek Subdrainage Area
Valmonte Canyon and Ferncreek have a combined drainage area of 415 acres and are both soft-bottom
natural drainage courses which converge at the base of Ernie Howlett Park. At the convergence of these
canyons [Figure 2.4] the stormwater flow is directed into a subsurface storm drain which runs under
Ernie Howlett Park and connects to a Los Angeles County Flood Control District (LACFCD) storm drain
MTD 227 below Hawthorne Boulevard at which point the drainage exits the City of Rolling Hills Estates
and the Peninsula and enters the City of Torrance.
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Machado Lake Nutrient TMDL Palos Verdes Peninsula Coordinated Monitoring Plan
February 1, 2011
The Valmonte Canyon Subdrainage Area is the larger of the two and collects stormwater runoff from
residential areas of Palos Verdes Estates, Rancho Palos Verdes and Rolling Hills Estates. Ferncreek
collects runoff only from Rolling Hills Estates.
The Valmonte/Ferncreek subdrainage area is predominantly residential and includes some residential
properties in the lower reaches of the drainage area in the equestrian overlay where horses are kept. A
municipal stable also lies within this drainage area. This monitoring site receives runoff from three of
the four Peninsula Cities(Rolling Hills Estates, Rancho Palos Verdes and Palos Verdes Estates).
L.7
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Figure 2.4 Looking West From Ernie Howlett Park at Ferncreek Converging from Left and
Valmonte Canyon from Right
The safest, most accessible downstream location for monitoring of this subdrainage area is at the
convergence of the two drainage courses (Valmonte Canyon and Ferncreek[Figure 2.51)where the flow
enters a subsurface storm drain under Ernie Howlett Park. A baseline dry weather flow enters the
subsurface storm drain under Ernie Howlett Park, either from groundwater seeping from below Ernie
Howlett park (see weep holes visible in Figure 2.5)or from Ferncreek or both. A routine dry weather
and wet weather monitoring site named"Valmonte"will be established at this location.
Valmonte Canyon does not appear to have discharge during dry weather so in the event that a source
tracking monitoring investigation is needed for this subdrainage area,a dry weather monitoring site will
be established at the storm drain pipe conveying runoff from Valmonte Canyon to the subsurface storm
drain below Ernie Howlett Park to document the presence/absence of dry weather discharge from
Valmonte Canyon. [Figure 2.61 This location will thus serve as a Tier 2 source tracking monitoring site in
the event that samples collected from flow entering the subsurface storm drain under Ernie Howlett
Park at the Valmonte monitoring site trigger a source tracking investigation.
Page 116
Machado Lake Nutrient TMDL Palos Verdes Peninsula Coordinated Monitoring Plan
February 1, 2011
---- .44,1,44-37- - •L. Y _- c• T ---":`.:j -
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Figure 2.5 Valmonte Monitoring Site; Pipe Conveying Drainage from Valmonte Canyon is in
the Foreground and Flow From Ferncreek Enters From the Right
,-,.....40,44.--i i 1111 ',/./ ,.
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Figure 2.6 Valmonte Canyon Tier 2 Monitoring Site
Page 117
Machado Lake Nutrient TMDL Palos Verdes Peninsula Coordinated Monitoring Plan
February 1, 2011
2.1.3. Ranchview/Chadwick Canyon Subdrainage Areas
Ranchview Canyon and Chadwick Canyon are both soft-bottom natural drainage courses [Figure 2.7]
with a combined drainage area of 385 acres. These two canyons converge and enter a subsurface storm
drain which then crosses under Palos Verdes Drive North and connects with LACFCD subsurface storm
drain RDD 275 behind Rolling Hills Estates City Hall.
The upper reach of Ranchview Canyon collects runoff from residential areas of Rancho Palos Verdes,
from the playing fields and classroom buildings of Palos Verdes Peninsula High School, as well as a
section of a major arterial roadway, Hawthorne Blvd.The lower reach of Ranchview Canyon collects
runoff from residential areas in Rolling Hills Estates within the equestrian overlay, however only a few of
those property owners currently keep horses [based on Community Emergency Response Team (CERT)
map).
Chadwick Canyon collects runoff from residential areas of Rancho Palos Verdes, including an elementary
school, as well as residential areas within County unincorporated areas. No equestrian areas lie within
the Chadwick Canyon drainage area [confirmed by CERT map].
Neither Ranchview Canyon nor Chadwick Canyon subdrainage areas appear to have discharge to RDD
275 during dry weather [Figure 2.7].These locations will serve as Tier 2 source tracking monitoring sites
in the event that samples collected from the RHE City Hall monitoring site trigger a source tracking
monitoring investigation. Flow observations made at the storm drain entry structures for each of these
canyons will document the presence/absence of dry weather discharge from these two subdrainage
areas.
Ott: pr ' t '
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Figure 2.7 Upper Ranchview Canyon
Page 118
Machado Lake Nutrient TMDL Palos Verdes Peninsula Coordinated Monitoring Plan
February 1, 2011
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Figure 2.8 Ranchview Canyon Tier 2 Site
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r . ;... . . _
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. k. `i.41•• .
Figure 2.9 Chadwick Canyon Tier 2 Site Entering Subsurface Storm Drain
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Machado Lake Nutrient TMDL Palos Verdes Peninsula Coordinated Monitoring Plan
February 1, 2011
2.1.4. RDD 275 Subdrainage Area—RHE City Hall Monitoring Site
Unlike most of the drainage courses on the Peninsula,the RDD 275 subdrainage area, comprised of 860
acres excluding Ranchview and Chadwick Canyons, consists primarily of hardened conveyances;a
combination of curb-and-gutter,subsurface storm drains,and a section of large open channel
(trapezoidal ditch). This is the most diverse subdrainage area from a land use perspective as it includes
the downtown commercial area of the Peninsula located mainly within Rolling Hills Estates, residential
areas in Rancho Palos Verdes and Rolling Hills, a County unincorporated residential area with some
equestrian properties and a private K-12 academy, as well as arterial roadways (Silver Spur Road and
Crenshaw Blvd.)The City of Palos Verdes Estates is the only one of the Peninsula cities without land area
in this subdrainage area. This subdrainage area is to be directly monitored and will also serve as a
surrogate monitoring site for areas on the Peninsula not being directly monitored.
Baseline dry weather flow from this subdrainage area is evident where it daylights in a trapezoidal ditch
along Crenshaw Boulevard [Figure 2.10].The safest, most accessible downstream location for monthly
monitoring of this subdrainage area is at the manhole behind Rolling Hills Estates City Hall [Figure 2.111
where RDD 275 joins drainage from Ranchview and Chadwick Canyons.
The trapezoidal ditch location adjacent to Crenshaw Blvd.will be utilized as a Tier 2 source tracking
monitoring site along with Ranchview and Chadwick Canyons in the event that wet weather samples
collected from the "RHE City Hall" monitoring site behind Rolling Hills Estates City Hall trigger a source
tracking investigation.
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Machado Lake Nutrient TMDL Palos Verdes Peninsula Coordinated Monitoring Plan
February 1, 2011
" •'�f '1
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Figure 2.11 RHE City Hall Monitoring Site at Manhole behind Rolling Hills Estates City Hall
2.1.5. Agua Magna/Sepulveda/Blackwater Canyon Subdrainage Area—
Lariat Monitoring Site
Three canyon drainage ways within Rolling Hills (Agua Magna,Sepulveda,and Blackwater Canyons)
cross under Palos Verdes Drive North, pass for a short distance through Rolling Hills Estates, cross under
Lariat Lane and converge into a drainage structure just inside the boundary of the South Coast Botanic
Garden which lies within County unincorporated land [Figure 2-12].The predominant land use within
this 650 acre,three canyon subdrainage area is low density residential development with some horse
keeping.
Based on preliminary field reconnaissance, it appears that this subdrainage area may not have discharge
to Machado Lake during dry weather. A monitoring site, "Lariat",will be established for this
subdrainage area at the drainage structure just inside the South Coast Botanic Garden.
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. - I1- m
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Figure 2.12 Lariat Monitoring Site at Drainage Structure Collecting Flow from Agua
Magna/Sepulveda/Blackwater Canyons
2.1.6. Project 77 Storm Drain Subwatershed within Palos Verdes Peninsula
As currently developed, only a minor area within the Peninsula currently contributes discharge to
Machado Lake via the Project 77 Storm Drain. This is because of a unique geologic/hydrologic condition
associated with the former Chandler Quarry, now an inert landfill. The Chandler quarry pit collects flows
from the majority of the areas west of Palos Verdes Drive East within the Project 77 Subwatershed,
including the Rolling Hills Country Club golf course. The Chandler Quarry/Landfill is currently proposed
for redevelopment and, according to the Chandler Ranch/Rolling Hills Country Club Project EIR
hydrology study, the tributary area of the Chandler quarry pit is 707 acres and has the capacity to retain
and infiltrate up to the 50-year storm without discharging to the Project 77 storm drain''. So as currently
developed,the tributary area to the Chandler Quarry does not result in discharge to Machado Lake
except under very rare, large storms. The City of Rolling Hills Estates intends to place conditions of
approval on the Chandler Ranch/Rolling Hills Country Club Project to achieve compliance with the
Machado Lake Nutrient TMDL targets. At the time of redevelopment, depending on the final hydrologic
analysis of the project, consideration will be given to placing an additional monitoring site at the
discharge point from the Chandler Ranch/Rolling Hills Country Club project to Project 77 Storm drain.
There is currently no safely accessible, representative monitoring location for the areas east of Project
77 storm drain not tributary to the Chandler quarry pit because those flows are conveyed via a
2 The EIR can be found on the City of Rolling Hills Estates website at htto://www.ci.rolline-hills-
estates.ca.us/index.asox?oaee=209&recordid=37
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Machado Lake Nutrient TMDL Palos Verdes Peninsula Coordinated Monitoring Plan
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subsurface County storm drain in the right-of-way for Palos Verdes Drive East which manholes cannot be
safely accessed for monitoring. Consequently, we are not proposing to monitor this subdrainage area.
Those areas within Project 77 storm drain subwatershed on the Peninsula not tributary to the Chandler
quarry pit will be assumed to be represented by the surrogate monitoring site, RHE City Hall.
2.2. Monitoring Schedule and Frequency
During the first twelve (12) months of the monitoring program,the four(4) monitoring sites (Solano,
Valmonte, RHE City Hall, and Lariat) will be visited by a monitoring crew on a monthly basis during dry
weather. Dry weather is defined as a day when there has been no rainfall of 1/10"' inch or greater on
that day or on the 72 hours preceding. If flow is observed, a Field Conditions Data Sheet will be
completed, a sample collected and flow measurements recorded. If no flow or insufficient flow for
sampling is present, a No Flow or Low Flow Conditions Data Sheet will be completed. Based on the
results of the first year of monitoring, each monitoring site will be classified as either a routine dry
weather/wet weather sampling location, or as a wet weather-only sampling location. Monitoring sites
which had sufficient flow for sampling on three (3) or more out of the twelve (12) routine monthly site
visits during the first year of the monitoring program will be classified as a dry weather/wet weather
monitoring site.
Monitoring Sites Subdrainage Description
Solano PVP subdrainage to Walteria Lake
Valmonte Valmonte and Ferncreek subdrainage
RHE City Hall RDD 275, Ranchview and Chadwick Canyons, also
surrogate for areas not directly monitored
Lariat Agua Magna, Sepulveda and Blackwater Canyons
2.2.1. No/Low Flow Observation Sites
Following the first year of monitoring, sites which are identified as being wet weather-only sampling
locations due to no or insufficient flow for sampling on eight or more out of twelve dry weather
observations, will be visited on a quarterly basis and a No Flow or Low Flow Conditions Data Sheet will
be completed to confirm that the status has not changed. After a year of quarterly confirmation, sites
which have no or insufficient flow for sampling on at least three (3)of the four (4) quarterly
confirmatory site visits will be removed from the routine dry weather monitoring program and no
further monitoring visits will be made for these sites during dry weather. See No/Low Flow Site
Classification Decision Process [Figure 2.13 No/Low Flow Site Classification Decision Process].
2.2.2. Dry Weather Sampling
Monitoring sites which have sufficient flow for sampling on three (3) or more out of the twelve(12)
routine monthly site visits during the first year of the monitoring program will be classified as dry
weather/wet weather monitoring sites. These sites will be monitored on a monthly basis for the
duration of the monitoring program unless implementation measures result in decreased flows which
would trigger reclassification of these sites as No/Low Flow Observation Sites in accordance with the
No/Low Flow Site Classification Decision Process.
2.2.3. Wet Weather Sampling and Flow Measurement
In addition to routine dry weather sampling, at least two qualifying wet weather sampling and flow
measurement events per year will be conducted at the four(4) monitoring sites (Solano, Valmonte, RHE
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City Hall, and Lariat). Wet weather sampling events will be scheduled by monitoring weather forecasts
for the 90274 and 90275 zip code areas on weather.com. Qualifying wet weather sampling events are
those work days (non-holiday week days) with a forecast of an 80% chance of at least 0.25 inch of
rainfall. Wet weather sampling events will begin as early in the day as possible to ensure that samples
are transported to the laboratory within required holding times.
8+ no flow/low flow observations
out of 12 monthly observations
3+ no flow/low flow observations
out of 4 quarterly observations
remove as dry weather
monitoring site, site becomes
wet weather •nito ing site only
Figure 2.13 No/Low Flow Site Classification Decision Process
2.3. Interim Waste Load Allocation Source Tracking Monitoring
Investigation
Based on the first year of baseline dry weather monitoring data collected from the Peninsula monitoring
sites as outlined in Section 2.2 above, an evaluation will be made to assess compliance with the monthly
average criteria in the Machado Lake Nutrient TMDL shown in Table 2.1. An Interim Waste Load
Allocation Source Tracking Monitoring investigation will be conducted for any monitoring sites where
monthly averages are exceeding the Year 0 waste load allocation. The Peninsula Cities will meet to
establish a flow tracking and sampling scheme to identify branch(s) of drainage system contributing to
interim waste load allocation exceedance. The source tracking will be conducted in an iterative, adaptive
manner to identify potential sources contributing to the waste load allocation exceedance and will be
informed by the results of low flow/no flow observation data.
After two years of combined wet weather and dry weather monitoring data are collected and reviewed,
an updated evaluation will be made to assess compliance with the monthly average criteria in the
Machado Lake Nutrient TMDL. An Interim Waste Load Allocation Source Tracking Monitoring
investigation will be conducted for sites with monthly averages exceeding the Year 0 or Year 5 waste
load allocation. The Peninsula Cities will meet to establish a source tracking sampling scheme to identify
monitoring sites in the various branch(s) of the drainage system and to determine the particular land
uses and defined areas of the drainage system that are contributing to interim waste load allocation
exceedance. Findings of source tracking investigations will inform appropriate action under the Palos
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Machado Lake Nutrient TMDL Palos Verdes Peninsula Coordinated Monitoring Plan
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Verdes Peninsula Implementation Plan for Machado Lake Nutrient TMDL (to be submitted by March 11,
2011).
Table 2.1. Interim and Final Waste Load Allocations for Storm Drain Discharges
MS4 Permittees Years After Date of Total Phosphorus Total Nitrogen
Effective Date Compliance (mg/L) (mg/L)
(03/11/2009)
Caltrans, General 0 03/11/2009 1.25 3.5
Construction and
Industrial Stormwater 5.0 03/11/2014 1.25 2.45
Permits 9.5 09/11/2018 0.10 1.00
A source tracking monitoring scheme would include the monitoring of upstream locations (Tier 2
monitoring sites) tributary to a Tier 1 monitoring site which has exceeded interim waste load allocations.
A preliminary list of several Tier 2 monitoring sites already identified for a few of the Tier 1 monitoring
sites are provided in Table 2.2. Tier 3 sites will be established by the Peninsula Cities at the time a
source tracking investigation is initiated or as needed in an iterative process. A description of the
technical design and rationale for source tracking investigations planned for the coming year will be
included as an attachment or appendix to the annual monitoring report. Results of any source tracking
investigations performed during the reporting year will be included as an appendix to the annual
monitoring report.
Table 2.2. Preliminary List of Tier 2 Monitoring Sites
Tier 1 Monitoring Site Tier 2 Monitoring Sites
Solano
Valmonte Valmonte Canyon storm drain pipe
Ferncreek stream bed
RHE City Hall Ranchview Canyon at inlet structure
also surrogate monitoring site Chadwick Canyon at inlet structure
RDD 275 trapezoidal open channel @ Crenshaw
Blvd.
Lariat Agua Magna Canyon @ PV Drive North
Sepulveda Canyon @ PV Drive North
Blackwater Canyon @ PV Drive North
3. Field Monitoring Methods and Procedures
This Chapter provides the methods and procedures to be used in the field when conducting water
quality monitoring.
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Machado Lake Nutrient TMDL Palos Verdes Peninsula Coordinated Monitoring Plan
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3.1. Water Quality Sampling Parameters
Compliance with the Nutrient TMDL will be shown through concentration-based monitoring. The water
quality constituents to be analyzed and the analytical methods are shown in Table 3.1. A State Certified
Laboratory will provide the analytical services for this Plan.
Table 3.1. Water Quality Constituents To Be Sampled
Analyte Method
Nitrate-Nitrite EPA method 300.0; 353.2
Total Kjeldahl Nitrogen (TKN) EPA 351.2
Total Phosphorus SM 4500-P E; EPA 365.3
3.2. Sampling and Flow Measurement Methods
All samples will be collected using manual grab sampling methods as this is the most relevant technique
for the conditions found on the Peninsula. Sampling Teams comprised of two (2)to three (3) members
will be responsible for obtaining the water quality samples from each of the identified monitoring sites.
Each Sampling Team will carry all necessary equipment to be able to sample in various environmental
and physical conditions (i.e. high or low flow, natural or manmade conveyances, etc). A list of necessary
equipment is presented in the following section. The Sampling Team will fill out a Field Conditions Data
Sheet at each monitoring site for each day of sampling. An example Field Conditions Data Sheet is
located in Appendix A.
A protocol for making instantaneous flow measurements will be established by the field team and
approved in advance by the Peninsula Cities' representatives for each permanent monitoring location.
Flow measurements will entail the use of a velocity meter plus measurement of the depth and width of
cross-sectional flow area or the use of an area-velocity flow meter calibrated for the particular
conveyance structure at each location. A minimum of three velocity readings will be made immediately
following each sample collection.
3.3. Monitoring Site Procedures
The following are the specific procedures that will be followed by the Sampling Teams at each
monitoring site regardless of whether it is an open manmade channel, an open natural area, or a
subterranean storm drain and regardless of the flow type (high or low). The locations and descriptions
of each identified monitoring site are provided in Chapter 2.
3.3.1. Sampling Preparations
Each Sampling Team should be certain that they have all of the necessary equipment to conduct the
sampling as shown in Table 3.2.3
-Adapted from Minnesota Pollution Control Agency, Biological Monitoring Program. 2001. Water Chemistry
Assessment Protocol for Depressional Wetland Monitoring Sites.
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Machado Lake Nutrient TMDL Palos Verdes Peninsula Coordinated Monitoring Plan
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Table 3.2. Sampling Equipment Inventory
Equipment Purpose Operation Check
Sample Bottles: Sufficient quantity for sampling
Poly Ethylene/ High Density Sample bottle all sites
Poly Ethylene—250 mL Clean labels attached
Sufficient quantity for sampling
all sites
Amber glass bottles—250 mL Sample bottle Clean labels attached
Sulfuric Acid (H2SO4) Preservative Sufficient volume for sampling all
sites
Other Equipment Purpose Operation Check
Cooler with ice Short term sample preservation Properly working cooler and
adequate amount of ice
Color wheel Measure water color in field Deionized water for reference
Instruction manual
Cell phone Communication Phone charger/batteries present
Field Sampling Plan Site location information Correct maps for each site
Measurement of volumetric Calibration per manufacturer's
Portable Flow Meter flow rate
instructions
Camera Document sampling Associated charger, batteries,
instruction manual, etc
Data sheets and clipboard Record field observations Correct data sheets for each site
Pencils/pens Recording data Sharp pencil point/working pen
Fine point permanent marker Label sample bottles Working marker
Chain of Custody Forms from
Sate Certified Laboratory Request analyses for samples Adequate number for sampling
all sites
Rain gear Keep Sampling Team dry Working rain gear
Safety vests/cones Ensure Sampling Team safety Enough for Sampling Team(s)
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Machado Lake Nutrient TMDL Palos Verdes Peninsula Coordinated Monitoring Plan
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3.3.2. Arrival at Monitoring Site
Upon arrival at the monitoring site,the Sampling Teams will inspect the location for general safety. It is
important to be aware of the surroundings when working in a street or other right-of-way and is
imperative to place safety cones so that traffic is aware of the situation.
3.3.3. Field Conditions Sheet
Site conditions are general observations that will be recorded when the Sampling Team first arrives at
the monitoring site.The following general observations should be recorded on the Site Conditions Field
Sheet:
• Date and time of arrival;
• The weather conditions;
• The air temperature;
• The general flow conditions of the water;
• The appearance and odor of the water;and
• If there is trash or debris at the monitoring site.
3.4. Sampling in Open Channels or Creeks/Streams Procedures
The following are the procedures that will be employed for sampling open manmade channels or
creek/stream sites. Water Quality samples will be collected prior to making flow measurements in order
to minimize disturbance of deposited sediment prior to sampling to ensure that samples collected are as
representative as possible of the discharged storm water.
A designated sampling apparatus must always be used to fill a sample bottle containing preservative. It
is important that the sample bottles do not overflow. If a sample bottle overflows, it must be discarded
and a new sample must be taken using a new sample bottle. Listed below are the steps to be taken
during open channels or creeks/streams sampling:4
• An ice chest with sufficient ice to properly store any samples will be utilized;
• Only the sample bottles with the correct site number will be used at each monitoring site;
• The sampling apparatus for each site will be acclimated by rinsing it out with water from the
waterbody three(3)times;
• Grab samples will be taken from the section of the manmade channel or creek/stream with the
deepest flow(if it is safe to do so);
• The Sample Team will always walk upstream to ensure that they do not disturb the sediments
which could taint the sample;
• Samples will be taken by facing the sampling apparatus upstream to reduce the possibility of
contamination;
• The Sampling Team will avoid touching the inside of the sampling apparatus to further prevent
contamination;
• The water in the sampling apparatus will be transferred to the sample bottle;
Procedures adapted from:US EPA,Office of Water.1992.NPDES Storm Water Sampling Guidance Document.EPA
833-92-001.
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Machado Lake Nutrient TMDL Palos Verdes Peninsula Coordinated Monitoring Plan
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• The sample bottles labeled with the appropriate site number will be placed in the cooler
standing straight up surrounded and supported by ice;
• The number of each sample from the sample bottle,the time the samples were collected,and
the time the samples were put on ice will be recorded on the Chain of Custody Form;
• All Sampling Team members that had custody of any samples will sign the Chain of Custody
Form;
• The courier used to transport the samples to the lab will be listed as receiving the samples for
transport. However,they will not sign the Chain of Custody Form;
• The Chain of Custody Form will be placed into a large watertight resealable bag and placed
inside the cooler with its corresponding samples;
• The cooler will be secured with packing tape and transported to the State Certified Laboratory
within the designated method holding times;and
• Upon the laboratory receiving custody of the samples,the State Certified Laboratory's
representative will sign the Chain of Custody Form.
3.5. Sampling in Subsurface Storm Drains Procedures
Subsurface storm drain sampling involving manholes can be more involved than open channel sampling
and may be inherently more dangerous. These types of areas may be considered confined entry spaces
requiring compliance with OSHA regulations. Therefore,any sites that require entry into a manhole will
be handled by city crews with the proper equipment and experience. However, most of the sampling
sites will not require entry into a manhole.
Water Quality samples will be collected prior to making flow measurements in order to minimize
disturbance of deposited sediment prior to sampling to ensure that samples collected are as
representative as possible of the discharged storm water.A designated sampling apparatus must always
be used to fill a sample bottle containing preservative. It is important that the sample bottles do not
overflow. If a sample bottle containing preservative overflows, it must be discarded and a new sample
must be taken using a new sample bottle. Listed below are the steps to be taken during subsurface
storm drain sampling:5
• An ice chest with sufficient ice to properly store any samples will be utilized;
• The required Occupational Safety and Health Administration safety checks and preparations for
the removal of a manhole cover and entry into a manhole safely will be completed;
• The designated sampling apparatus labeled with the appropriate site number will be used;
• The sampling apparatus for each site will be acclimated by rinsing it out with water from flow in
the drain three(3)times;
• The grab sample will be taken from the horizontal and vertical center of the storm drain(if it is
safe to do so);
• The bottom sediments(if there are any) in the drain will not be disturbed so as to avoid
contaminating the sample;
• The sampling apparatus will be held so the opening faces upstream (with the Sampling Team
member also facing upstream);
• The inside of the sampling apparatus will not be touched in order to prevent contamination;
5 id.
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Machado Lake Nutrient TMDL Palos Verdes Peninsula Coordinated Monitoring Plan
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• The sample water from the sampling apparatus will be transferred into the proper sample
bottles without overflowing them;
• The sample bottles labeled with the appropriate site number will be placed in the cooler
standing straight up surrounded and supported by ice;
• All Sampling Team members that had custody of any samples will sign the Chain of Custody
Form;
• The courier used to transport the samples to the lab will be listed as receiving the samples for
transport. However,they will not sign the Chain of Custody Form;
• The Chain of Custody Form will be placed into a large watertight Ziploc bag and placed inside the
cooler with its corresponding samples;
• The cooler will be secured with packing tape and transported to the State Certified Laboratory
within the designated method holding times;and
• Upon the laboratory receiving custody of the samples,the State Certified Laboratory's
representative will sign the Chain of Custody Form.
3.6. No Sample Taken Procedures
There may be circumstances that would cause a particular monitoring site to not be sampled.These
circumstances may involve:
• Lack of flow or insufficient flow
• Site inaccessibility.
3.6.1. Low Flow Conditions
Sampling will be attempted even in extreme low flow conditions. If a sample cannot be taken due to
insufficient or a lack of flow,a separate data sheet will be completed to explain why no sample was
taken.
3.6.2. Site Inaccessibility Due to Storm Event
If a monitoring site becomes inaccessible due to a storm event in which it would be dangerous to
approach the manmade channel,stream/creek,storm drain inlet or manhole;the Sampling Team will
delay sampling for 24 hours to 48 hours after the storm event. However, if an alternative monitoring site
is in close proximity and provides a sample which is representative of the original monitoring site,then
sampling will occur on schedule at the alternative monitoring site.
3.6.3. Site Inaccessibility Due to Temporary Physical Obstruction or
Condition
If a monitoring site is temporarily or permanently blocked by a physical obstruction,such as downed
trees or evidence of a landslide or rockslide,the Sampling Team will attempt to move 25-50 feet(ft)
upstream or downstream from the monitoring site and conduct sampling there. If there still is no
suitable access,the Sampling Team will determine the possibility of sampling further away(up to 100 ft)
from the original monitoring site.
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3.6.4. Site Inaccessibility Due to Ownership Change
This condition is unexpected,but if the monitoring site comes under new ownership,such that
previously granted access is now denied,permission will be requested from the new owner. If this is
denied, a permanent new monitoring site will be selected in close proximity to the original monitoring
site provided the proposed new monitoring site is as representative as the previous monitoring site.
3.7. Corrective Action for Field Measurements
The Sampling Team will have the primary responsibility for responding to equipment failures during
sampling. Deviations from defined protocols will be documented in the comment section of the Field
Conditions Data Sheet. If any equipment fails,Sampling Team personnel will report the problem in the•
comment section of the Field Conditions Data Sheet and will not record the data values for the water
quality constituents in question. Actions will be taken to replace or repair broken equipment prior to
the next field use. Data that are known to be collected with faulty equipment will be entered into the
project database,but will not be used for determining compliance. It is the combined responsibility of
all members of the Sampling Team to determine if the performance requirements of the specific
sampling method have been met,and to collect an additional sample if required.
3.8. Sample Management
In order for the samples to be considered valid,each sample must be taken to the State Certified
Laboratory for chemical analyses:
• In the proper container as provided by the State Certified Laboratory;
• With a sufficient volume of sample as prescribed by the State Certified Laboratory;
• Having a sufficient amount of preservative as pre-supplied in the appropriate sampling bottles
by the State Certified Laboratory;and
• In less time that the method holding time for that type of sample(i.e.water quality constituent
type).
3.8.1. Container Type, Container Volume, Sample Preservation, and Holding
Time
Each Sampling Team will use a designated filling container that will be rinsed with deionized water(no
soap)three times prior to use. The State Certified Laboratory will supply a sufficient number of
sampling bottles to the Sampling Teams who will label the sampling bottles with the correct monitoring
site information. After collection of the samples,the Sampling Team will write the following information
on the label:
• Analyses to be performed on the sample:For this project,the State Certified Laboratory will be
notified in advance that each label will state"PVP Nutrient TMDL". The PVP Nutrient TMDL
label will signify to the State Certified Laboratory what parameters to analyze for;
• Date and Time sample collected;
• Sample number:identifies sample location,date,and aliquot(see sample assignment numbers
shown in Table 5);and
• Full names of individuals who collected the samples.
Total Phosphorous requires a 250 milliliter(mL)amber glass bottle or a 250 mL Poly Ethylene bottle for
sampling under EPA method 635.3 and a 250 mL amber glass bottle for sampling undere SM 4500-P E.
Total Kjeldahl Nitrogen(TKN) requires a 250 mL Poly Ethylene bottle for sampling under EPA method
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Machado Lake Nutrient TMDL Palos Verdes Peninsula Coordinated Monitoring Plan
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351.2. Nitrate(NO3) and Nitrite (NO2) require a 250 mL Poly Ethylene bottle for sampling under EPA
method 353.2 and require a 125 mL High Density Poly Ethylene (HDPE) bottle for sampling under EPA
method 300.0.
TKN,Total Phosphorus, and Nitrate-Nitrite (under EPA method 353.2) require sulfuric acid (H2SO4) as a
preservative. Nitrate-Nitrite, under EPA method 300.0, do not require H2SO4 as a preservative during
sampling. Each sample bottle will be prepared with the correct amount of H2SO4. All samples must be
kept under 4° Celsius (C) regardless of the constituent and the method.
The amount of time that a representative valid sample can be held from the time the sample is taken
until the time the sample is analyzed is the method holding time. The allowed holding time assumes that
the sample has been properly preserved and kept on ice (<4° C)from sampling until custody of the
sample is relinquished to the State Certified Laboratory. Table 3.3 lists the analytical method used, the
bottle type and volume, the preservative, and the method holding time required for each water quality
constituent.
Table 3.3. Water Quality Sampling Method, Bottle Types, Preservatives, and Holding Time.
Analyte Method Bottle/Volume Preservative Holding Time
Total Phosphorous EPA 365.3 250 mL Poly Ethylene <4°C, H2SO4 28 days
Total Phosphorous SM 4500-P E 250 mL Amber glass <4°C, H2SO4 28 days
TKN EPA 351.2 250 mL Poly Ethylene <4°C, H2SO4 28 days
NO2+ NO3-N ( EPA 353.2 250 mL Poly Ethylene <4°C, H2SO4 28 days
NO,+ NO3-N EPA 300.0 125 mL HDPE I <4°C I 48 hours
3.8.2. Sample Naming Methodology
Because several cities are coordinating together for this Plan, the identification and use of a specific
water quality sample naming protocol is very important. Each sample will have the name of the specific
monitoring site written first, the date in mmddyyyy format second, and a letter denoting the sample
order(for multiple samples at one location on one day) last. Table 3.4 lists the sample naming protocol
for each monitoring site.
Table 3.4. Sample Nomenclature
Monitoring Site Name Location Sample Numbering
Solano Palos Verdes Estates Solano—mmddyyyy—A, B, C,
D, E, ...
Valmonte Rolling Hills Estates Valmonte— mmddyyyy—A, B,
C, D, E, ...
RHE City Hall Rolling Hills Estates RHE City Hall—mmddyyyy—A,
B, C, D, E, ...
Ranchview Rolling Hills Estates Ranchview—mmddyyyy—A,
B, C, D, E, ...
Chadwick Rolling Hills Estates Chadwick—mmddyyyy—A, B,
C, D, E, ...
Lariat Rolling Hills Estates Lariat—mmddyyyy—A, B, C,
D, E, ...
Page I 32
Machado Lake Nutrient TMDL Palos Verdes Peninsula Coordinated Monitoring Plan
February 1, 2011
3.8.3. Chain of Custody Procedures
The State Certified Laboratory will supply the Chain of Custody Forms that will be utilized by each of the
Sampling Teams. An example of a Chain of Custody Form can be found in Appendix B. Chain of custody
procedures will be used for all samples throughout the collection,transport,and analytical process to
ensure the most accurate results. Samples will be considered to be in custody if they are(1) in the
custodian's possession or view, (2) retained in a secured place(under lock)with restricted access,or(3)
placed in a container and secured with an official seal such that the sample could not be reached
without breaking the seal.The principal documents used to identify samples and to document
possession will be the Field Conditions Data Sheet and the Chain of Custody Form.
The chain of custody procedures will be initiated during sample collection.A Chain of Custody Form will
be provided with each sample or group of samples.Each Sampling Team Member having custody of the
samples will sign the Chain of Custody Form and ensure that the samples were not left unattended
unless properly secured.Documentation of sample handling and custody will include the following:
• Sample identification;
• Type of sample;
• Sample collection date and time;
• Any special notations on sample characteristics or analysis;
• Analyses to be performed;
• The initials of the Sampling Team member that collected the sample;
• The date the sample was delivered to/sent to the State Certified Laboratory;and
• The shipping company and waybill information if shipped.
Once samples have been collected,each Sampling Team will deliver the samples for chemical analyses
with the respective chain of Chain of Custody Form to the State Certified Laboratory or coordinate with
a reliable courier for sample drop off to the State Certified Laboratory. The completed Chain of Custody
Form will be placed into a plastic envelope and kept inside the sampling cooler. Upon delivery to the
State Certified Laboratory,the Chain of Custody Form will be signed by the person receiving the samples
and by the person delivering the samples.Chain of custody records will be included in the final reports
prepared by the analytical laboratories and will be considered an integral part of the report.
3.9. Health and Safety Concerns
There is the potential for the Sampling Teams to be out in adverse conditions. Therefore,the safety of
the Sampling Teams is of the upmost concern. The Sampling Team coordinator will prepare a health and
safety plan and will train the Sampling Team on that plan. The following sections detail the methods
that will be undertaken to ensure the safety of the Sampling Teams.
3.9.1. Traffic Hazards and Traffic Control
Due to the fact that water quality monitoring often occurs in severe weather,there is potential for the
Sampling Teams to be driving in poor conditions. It is important that all traffic rules and regulations as
well as all traffic control signs and devices be obeyed in order to ensure Sampling Team safety.
Vehicle traffic is also a major concern in water quality monitoring. Vehicle traffic can present a hazard
to Sampling Teams when they are working close to roadways because there is a potential for a Sampling
Team member to be hit by oncoming traffic. While working in areas with traffic,the Sampling Team will:
Page 133
Machado Lake Nutrient TMDL Palos Verdes Peninsula Coordinated Monitoring Plan
February 1,2011
• Park as far off the road as feasible to avoid interfering with traffic flow;
• Utilize the vehicle's flashing yellow warning lights and hazard lights;
• Use safety cones to mark off the work area and wear a reflective safety vest;
• Place a yellow barricade around open manholes to clearly mark the area;and
• Wear bright rain gear during storms to be more visible.
3.9.2. Inclement Weather
Extreme heat,cold, humidity,and rain can adversely affect monitoring instrument response and
reliability. Rain and wet conditions also increase slipping and tripping hazards, braking distances of
vehicles,and the potential for slippage or handling difficulties of field equipment. Winter storms will
bring in colder than normal temperatures to the area.Sampling Teams should be prepared to work long
hours in wet and cold conditions and should wear extra layers of clothing under rain gear since there
may be a variety of temperature changes.
Page 134
Machado Lake Nutrient TMDL Palos Verdes Peninsula Coordinated Monitoring Plan
February 1,2011
4. Quality Assurance and Quality Control (QA/QC)
This section discusses the quality assurance and quality control measures that will be implemented for
both field and laboratory activities to verify that data quality objectives are being met under this Plan.
4.1. Field Sampling QA/QC Procedures
The following quality assurance and quality control procedures will be implemented as part of the field
sampling procedures that have been described in detail in Section 3.
4.1.1. Trip Blank
Sample blanks containing deionized water are provided by the State Certified Laboratory with each
batch of sample bottles. The field Sampling Teams should ensure that trip blanks are kept on ice with
the sample bottles as a check on proper temperature of preservation.Upon receipt of samples from the
courier or field Sampling Team,the laboratory staff will check the temperature of the trip blank to
confirm that samples have been properly held on ice at a temperature of 4°C or lower.Trip blanks will
be included at a frequency of one per cooler.
4.1.2. Equipment Blank
Although it is preferable to collect water samples directly into the sample bottle in order to minimize
cross-contamination,this may not be feasible due to field conditions and/or to avoid flushing
preservative from the sample bottles. When intermediate sampling apparatuses are necessary,they
must be made of appropriate materials for the project target analytes,and must be decontaminated at
the start of sampling and between monitoring sites if the device is to be re-used. Any intermediate
apparatuses that are used for collecting samples and dispensing them into sample bottles such as hand-
held sampling devices, bailers and/or tubing will be tested with equipment blanks to evaluate the
potential for cross-contamination associated with decontamination procedures.
The sampling equipment should be thoroughly pre-cleaned and placed in a sealed bag or wrapped in
protective covering prior to transport to the field. Pre-cleaning will utilize either manual or ultrasonic
techniques aided by Liquinox®(or other acceptable non-phosphate detergent),followed by a tap water
rinse,and a final rinse with deionized water. It is preferable to dedicate a pre-cleaned sampling
apparatus for each monitoring site in order to avoid the need for field decontamination, however
depending on the type of equipment,this may be cost-prohibitive in which case field decontamination
between monitoring sites will be necessary. Field decontamination of intermediate sampling
apparatuses between monitoring sites will utilize manual scrubbing and three rinses with deionized
water(no detergent).
Effectiveness of pre-cleaning and/or field decontamination procedures will be evaluated by collecting an
equipment blank for laboratory analysis. The equipment blank will be collected by pouring laboratory
grade deionized water into the sampling device which has been decontaminated using the specified
method and then transferring the water to a sample bottle. The equipment samples will be given a
fictitious sample I.D., handled in the manner used for surface water/stormwater samples, and submitted
to the laboratory as"blind"samples.An equipment blank will be collected at a minimum frequency of
once per sampling event for the first three sampling events and then the frequency reduced to one for
every 20 samples(5%)or for every change in field personnel,decontamination methodology, or change
in intermediate sampling device,whichever is more frequent.
Page 135
Machado Lake Nutrient TMDL Palos Verdes Peninsula Coordinated Monitoring Plan
February 1, 2011
4.1.3. Duplicate Samples
Duplicate samples are two samples collected at the same time and place in sequential order. Analysis of
duplicate samples evaluates field sampling precision and sample homogeneity. A duplicate sample is to
be collected as soon as possible after the initial surface water sample has been collected and will be
subjected to identical handling and analysis. Duplicate samples will be given a fictitious sample I.D. and
will be submitted to the laboratory as "blind" samples. Duplicate samples will be collected a minimum
of once per sampling day. The location of the duplicate sample collection will be rotated among
monitoring sites from one event to the next.
Table 4.1. Field QA/QC Sample Collection Requirements
QA/QC Samples Initial Frequency Ongoing Frequency
(1St three months)
Trip blanks 1 per cooler 1 per cooler
Field equipment method blanks 1 per decontamination method 1 per decontamination method
per event per every 20 samples or at
change in field crew,
decontamination methodology,
or sampling device whichever is
more frequent
Field duplicate samples 1 per event, rotating location 1 per event, rotating location
4.1.4. Collection of Sample for Laboratory Spike and Duplicate Analyses
The State Certified Laboratory performs laboratory duplicate and spike analyses on environmental
samples to evaluate accuracy, precision and potential matrix interference. Matrix spike and sample
duplicate analyses should be performed by the laboratory by using project samples whenever possible.
This requires that adequate sample volume is provided, consequently bottles will be filled leaving only a
small head space. If an additional sample bottle is needed by the laboratory in order to perform Matrix
Spike/Matrix Spike Duplicate analyses, field personnel will specify on the chain-of-custody form the
sample to be used for the Matrix Spike/Matrix Spike Duplicate analyses.
4.1.5. Training Sessions and QA/QC Review
Sampling Team personnel will receive training so that they are familiar with the field sampling plan and
are aware of analysis holding times. Quality control and training sessions will be held prior to the start
of sampling to verify the proper working order of field equipment, refresh monitoring staff in monitoring
techniques and familiarize them with the field sampling plan. At least twice per year the Sampling
Teams will consult with the QA manager to determine whether the data quality objectives are being
met, and decide if any changes in field sampling methods are necessary.
4.2. Laboratory QA/QC
A laboratory certified by the State of California in the analytical methods specified in this Plan will
conduct the laboratory analysis of samples. Analytical methods to be used for laboratory analyses are
listed in Table Table 4.2 Analytical Methods and Limits. The certified laboratory will maintain custody
logs sufficient to track each sample submitted and to analyze or preserve each sample within specified
holding times.
Page 136
Machado Lake Nutrient TMDL Palos Verdes Peninsula Coordinated Monitoring Plan
February 1, 2011
Table 4.2 Analytical Methods and Limits
Parameter Method Units Target Reporting Method
Limit Detection Limit
Total Phosphorus SM 4500 P-E mg/L 0.05 0.01
or
EPA 365.3
Nitrate/Nitrite EPA 300.0 or EPA mg/L 0.1 0.03
353.2
Total Kjeldahl Nitrogen EPA 351.2 mg/L 0.1 0.07
(TKN)
Method Detection Limit (MDL)—The MDL is the lowest concentration at which an analyte can be
detected in a sample that does not cause matrix interferences (typically determined using spiked
reagent water). In this context, "detected" means that a sample that contains the analyte detected at
the MDL can be distinguished from a blank with 99%certainty. Detection limits are established by the
laboratory during MDL studies using clean, undiluted matrix. If, during analysis, it is determined that a
sample needs to be diluted prior to analysis, the detection limit will be modified based on the dilution
and the detection limit adjusted by "best professional judgment".
Reporting Limit (RL)6—The RL is the lowest concentration at which an analyte can be detected in a
sample and its concentration can be reported with a reasonable degree of accuracy and precision. A
criterion of± 20% accuracy and 20% relative standard deviation (RSD) for replicate determinations is
often used to define "reasonable".The acceptable ranges depend somewhat on the analytical
methodology used. For samples that do not pose a particular matrix problem, the RL is typically about
three to five times higher than the MDL. Similar to the MDL, the RL is a laboratory-specific number,
which may change with time. When a sample has to be diluted before analysis, either because of matrix
problems or to get the instrument response within the linear dynamic range, the RL is raised by a factor
corresponding to the dilution factor. This number may change with time.
4.2.1. Laboratory Performance Measurements
The certified laboratory routinely includes performance measurements in the analysis stream as part of
its internal QA/QC and certification requirements to assess whether data quality criteria are met. These
results are reported along with results of project sample analysis. These types of laboratory
performance QA/QC checks are briefly described below.
1. Method Blanks (also called extraction blanks or preparation blanks):These account for
contaminants present in the preservative and analytical solutions and equipment used during
the preparation and quantification of the parameter.
2. Injection Internal Standards and/or Surrogates: These account for error introduced by the
analytical instrument or extraction process.
3. Matrix Spike Samples:These are field samples to which a known amount of contaminant is
added and used to measure potential analytical interferences present in the field sample.
6 California Department of Public Health
Page I 37
Machado Lake Nutrient TMDL Palos Verdes Peninsula Coordinated Monitoring Plan
February 1,2011
4. Replicate Samples:These are replicates of extracted material that measure the instrumental
precision.
a. Laboratory Replicate Samples:These are replicates of the raw material that are
extracted and analyzed to measure laboratory precision.
b. Matrix Spike Replicate Samples:These are used to assess both laboratory precision and
accuracy. They are particularly useful when the field samples analyzed do not contain
many of the target compounds(measuring non-detects in replicate does allow the data
reviewer to measure the precision or the accuracy of the data in an analytical batch).
5. Certified Reference Materials(CRMs):Analysis of CRMs is another way of determining accuracy
of the analysis by comparing a certified value of material with similar concentrations as those
expected in the samples to be analyzed.
4.2.2. Reporting of Results
Analytical results will be reported to the Quality Assurance Manager(QA Manager)within ten (10)
business days(ten-day turnaround time). The certified laboratory will provide analytical data reports to
the QA manager in electronic format along with summaries of QA/QC analyses and copies of the chain-
of-custody forms. The certified laboratory quality assurance manager will review analytical data reports
and ensure that data has been internally validated in accordance with the laboratory's published
Standard Operating Procedures(SOPs)for each analytical method and that non-conformances are
flagged and that the project QA Manager is promptly notified.
Flagging of data:
• Analytical results below the Method Detection Limit are to be reported as less than ("<")
followed by the actual MDL value,and flagged with an"ND"or not detected.
• Results reported by a laboratory at levels between the Reporting Limit and the Method
Detection Limit are flagged with a"j"to indicate that the analyte is present but not within the
range that can be reliably quantified.
• Other QA qualification codes will be used if QC criteria are not met or qualification is deemed
appropriate by the contract laboratory QA manager.
4.3. Quality Assurance Manager
A QA Manager,independent of the field sampling contractor and laboratory,will be designated to verify
that quality assurance and quality control procedures are being carried out in accordance with the Plan.
The QA Manager will review laboratory data reports and field data sheets as well as chain-of-custody
forms for conformance with procedures and data quality objectives specified in this Plan.The QA
Manager will also perform periodic observations of field sampling procedures to confirm that the field
methodology specified in this Plan is being followed.At least twice per year the QA Manager will consult
with the field Sampling Team to discuss whether data quality objectives are being met and whether any
modifications to the Plan or field sampling procedures are necessary or advisable. The QA Manager will
also consult with the Peninsula Gties at least twice per year following the assessment of conformance
with data quality objectives to advise them of any necessary or advisable modifications to the
monitoring plan or field sampling procedures. Plan revisions will be submitted to Regional Board staff
for review and approval.
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Machado Lake Nutrient TMDL Palos Verdes Peninsula Coordinated Monitoring Plan
February 1, 2011
5. Data Analysis and Reporting
Monitoring in accordance with this Plan will continue until the Peninsula Cities have established
compliance with final waste load allocations. Compliance will be based on three contiguous years of
monitoring data wherein monthly average concentrations are at or below the final waste load
allocations for Total Nitrogen and Total Phosphorous.Once compliance with final waste load allocations
is established,the results of this monitoring plan and other available information may be used to revise
the amount of monitoring required to demonstrate continued TMDL compliance under a revised
monitoring plan or other Regional Board order. If final waste load allocations are established at one or
more Tier 1 monitoring sites, but not at others,then reduced monitoring may be proposed at the
compliant locations after three contiguous years of compliant monthly average data are achieved.
5.1. Annual Monitoring Reports
The data collected as described in this Plan shall be compiled and reported to the Regional Board
annually beginning one year from the date of approval of the Plan. The report will include the results
from the preceding year and will be submitted to the Regional Board within 45 days of the end of each
reporting year. Compliance' will be based upon the monthly samples,or in the case of multiple
samples being collected during one month,the monthly average.
Data transmitted shall include:
• A discussion of the Peninsula Cities'compliance with interim and final waste load allocations
and targets set for nutrients in Machado Lake.
• A tabular database in Excel or Access format including:Sample Dates,Sample Locations,
Laboratory Results,and Detection Limits.
• Copies of field observation/sampling comment logs in PDF or equivalent format.
• A discussion of any requested changes or modifications to this Plan along with supporting
documentation.
• Results of source tracking investigations included in an appendix
A description of the technical design and rationale for source tracking investigations planned for the
coming year will be included as an attachment or appendix to the annual monitoring report.
The Annual Report shall be signed by the Executive Officer or authorized designee of the Peninsula City
acting as current Chair in accordance with an MOA to be established among the Peninsula Cities,and
transmitted electronically to the Regional Board. The certification shall read:
I certify under penalty of law that this document and all attachments were prepared under my direction
or supervision in accordance with a system designed to assure that qualified personnel properly gather
and evaluate the information submitted.
Based on my inquiry of the person or persons who manage the system,or those persons directly
responsible for gathering the information, the information submitted is, to the best of my knowledge and
belief, true,accurate,and complete.lam aware that there are significant penalties for submitting false
information,including the possibility,of a fine and imprisonment for knowing violations.
Executed on the day of ,20
'Basin Plan Amendment,page 11,Implementation Plan Element
Page 139
Printed Name: Title:
City of
5.2. Receiving Waters Limitation Compliance Reports
In the event that any of the monitoring sites described herein are deemed out-of-compliance with
interim or final waste load allocations,the annual monitoring reports prepared as part of this Plan may
be used by the Peninsula Cities tributary to those monitoring sites to prepare individual Receiving
Waters Limitation Compliance Reports(if required by the Regional Board).
Page 140
Appendix A
Page 141
Palos Verdes Peninsula
Machado Lake Nutrient TMDL Coordinated Monitoring Plan
Field Data Sheet-Page 1.
Date:
Site Name:
Station ID No.: - 20=_ (Example:Site Name-MMDDYEAR-A)
Time arrived on site: (24-hr clock)
TIME OF SAMPLE COLLECTION
Time (24-hr clock): Date: / /Number of containers:
FLOW MEASUREMENTS
Depth of water: (in, ft) Width of flow: (in,ft)
Flow rate: (gal/min or linear vel.) Time (24-hr clock):
Depth of water: (in, ft) Width of flow: (in,ft)
Flow rate: (gal/min or linear vel.) Time (24-hr clock):
Depth of water: (in,ft) Width of flow: (in,ft)
Flow rate: (gal/min or linear vel.) Time (24-hr clock):
Page 142
Field Data Sheet-Page 2
OBSERVATIONS:
Water Conditions: (Circle the Appropriate Identifier)
Odor: None,Musty,Sewage,Rotten egg,Sour milk, Fishy,Other:
Color: None,Yellow,Brown,Grey,Green, Red,Other:
Clarity: Clear,Cloudy,Opaque,Suspended Solids,Other.
Floatables: None,Oil sheen,Foam,Animal waste,Green Waste(Leaves), Food, Paper,Plastic,
Grease, Hydrophytes,Trash,Other:
Settleables: None,Salt,Clay,Oil, Rust,Microbes,Other:
Weeds:None, Normal, Excessive,Note:
Biology:None,Algae bloom, Larvae, Crawfish, Frogs, Fish,Waterfowl, Hydrophytes, Blue-green algae,
Other
Sky: Stormy,Overcast, Partial clouds, Haze, Fog,Clear
Wind: Calm, Light breeze,Strong breeze,Windy,Gusty
Flow Characterization: Storm/Flood, Rapid,Tranquil, Laminar,Standing, Dry
Low Flow/No Flow Conditions
Station ID No.: - 20=_ (Example: Site Name-MMDDYEAR-A)
Time (24-hr clock):
Was there Flow? (Circle answer)YES NO
If there was flow but no sample was taken,why was no sample taken? Explain:
Time left site: (24-hr clock)
Page 143
Appendix B
Page 144
Example Chain of Custody Form
10411.1! Weck Laboratories, Inc. CHAIN OF CUSTODY RECORD
14859 East Clark Avenue.: Industry : CA 91745 STANDARD
Tel 523.3:5-2139 • Fax 826-336-3534 • VA•,w.wecklabs.com Page 1 Of I
WENT-NAME: PkvJEL,T ANALYJEb REUUEsTED SPECIAL HANDLING
Sm.,Dr:Pu:h 151'.
CJ Hour Pr,,h 1C0':
ADORE SS PHOT IE: .18-72 1-bin Rrh 76'.
FAX: J-5 Dm,Pu:h 3CA.
EMAIL: Posh E•n s,rim:
10-1i NMI,t:
PROJECT t.t\HAGER SAMPLER ,./e. DamPnri:+q-
'_hnrn?s w}I npTly Is w?elend>hohd;ys
I Cte DATE TIME _1.IFL SAMPLE IC6tnIFICATI':f N71TE U.'CATI<H -C" Melhoi of shipment
iF
or lib Ua CM11 SAMPLED L'AMPLED TYPE ::m iwhll.4EF1 IS
RELINQUISHED BY DATE TIME 1-E.:LIVED BY SAMPLE CONDITION: SAMPLLTTPE LODL
:,xaq,-r.r:
Anunl T-np-rnlure, PIA.11nn Aq.eron
L=51.11,1
RELINQUISHED BY DATE!TIME RECEIVED BY p«n.d';•nler Y!fi D'/i=Drink int)''e.r«
Y!li LY.y='W..'.Vn-,
E,i.I.nr.54,1:Pr.-.nt Y!H RYl=Rain WM..,
�nrnVn«Anrrel-d Y!N W=.runA W&,
RELINQUISHED BY DATE i TIME RECEIVED BY F1nK:«IntLitt, y,tJ u:.=W
SW L.Mil wn:h.
Ct.=CO
_ nT=gent Merl.
PRE SCHEPAH)RUSH ANALYSES N1LL TAKE PRIORITY rE JAL kEu(11FE}dEHTS r BILLIFb_INFJF}.IATI!r1I
OVER 1_iilSCI-IEDVLED RUSH REOUEST5
Cllenl n1:-'to Terme 8 Condibcne oL y/wvi,wnrillntr
Page 145
Appendix C
Page 146
Monitoring Site Summary
Site ID:Solano Land Uses: residential, elementary school,
Type:Tier 1 dry and wet weather Tributary Area: 144 acres
Tributary Agencies:
Palos Verdes Estates
•
II Jo-L
•.•;5 9•r` . ` SB = - - JJ,
Site ID:Valmonte Land Uses: residential, residential with horse
keeping,schools, municipal stable, religious, parks,
open space
Type:Tier 1 dry and wet weather Tributary Area:415 acres (Valmonte Canyon and
Ferncreek)
Tributary Agencies:
•
Rolling Hills Estates
Rancho Palos Verdes
Palos Verdes Estates
11
Page 147
Site ID: RHE City Hall Land Uses: Commercial, residential, low-density single family
residential, K-12 schools, municipal facilities, religious facilities,
arterial roadways
Type:Tier 1 dry and wet weather Tributary Area: 1245 acres (860 acres from RDD 275 and 385
acres from Ranchview and Chadwick Canyons). Note: this
includes 334 acres of County unincorporated which is not
counted in PVP incorporated cities area.
Tributary Agencies: ( " et. ;' > 1 . ;
Rolling Hills Estates --kle, ` },�it , ' ,�4.'
,r 'g, • ( 1• A* : , .\ .
Rancho Palos Verdes i 4cc h `- '' . '
Rolling Hills �' r"' t�'1 " 'tv: � •
County unincorporated .?:,7-...47,"
r .
,.-;, Y :••,';`•-V0---'7;`'''",
J C•' V
i4 t'1 �f. i 6:-..i,.,-,....- t •
r� ! i
Site ID: Lariat Land Uses: low density residential, residential, some residential
horse keeping
Type:Tier 1 dry weather observation Tributary Area:602 acres (Agus Magna, Sepulveda and
and wet weather sampling Blackwater Canyons)
Tributary Agencies: ,
g
Rolling Hills s• .. - " I
Rolling Hills Estates
0
i1`
!IIIA -. -" "
a 1181111 ;. „"�
Page I 48
Site ID:Valmont Cyn Land Uses: residential, residential with horse keeping,schools,
municipal stable, religious,parks,open space
Type:Tier 2 subdrainage of Tributary Area:TBD
Valmonte
Tributary Agencies: tF .= —,��� �
"
„
Palos Verdes Estates ;, ,.
Rolling Hills Estates • t . ,,,"'may: . rr
x ` :
r ,
14 Y
•
Site ID: Ferncreek Land Uses: residential, residential with horse keeping, open
space
Type:Tier 2 subdrainage of Tributary Area:TBD
Valmonte
Tributary Agencies: .
�` , ," _ '
Rolling Hills Estates • A i• •
.•'•-1 • 4-..
Page 149
Site ID: Ranchview Land Uses: : Residential, K-12 schools, arterial roadways
Type:Tier 2 subdrainage of RHE City Tributary Area:TBD
Hall
Tributary Agencies: . ., '' -
_I J y ''-
Rancho Palos Verdesiiiii41
,. f • 4
I
Rolling Hills Estates �?
6 1 il I >4°.' i.. , '
r F
��L '�iiiirk ~ � S � 1. : '
itto
Site ID:Chadwick Land Uses: : Residential, K-12 schools, arterial roadways
Type:Tier 2 subdrainage of RHE City Tributary Area:TBD
Hall
Tributary Agencies: .i ' ,,= 1 x► `- --
P:. ;. . \- • ?- - "se
lilt-
�_
Rancho Palos Verdes _
County unincorporated ~,
Page 150
Site ID:RDD 275Trap Land Uses: : Commercial, residential, low-density single family
residential, municipal facilities, religious facilities, arterial
roadways
Type:Tier 2 subdrainage of RHE City Tributary Area:TBD
Hall
Tributary Agencies: ""
I .:4 r -..
Rolling Hills Estates :/„.„(7 +q ;,, k ;,;
}r r1+i is ! ,„ • „p,.. v *ia
Rancho Palos Verdes t, �°,�r ' -� „t -
Rolling Hills
County unincorporated 4-,,4 ,.
' ' .4: wi.,.4 .,r
, i
II., ,,,,
r.. +,
Site ID:Blackwater Land Uses: : Low-density single family residential
Type:Tier 2 subdrainage of Lariat Tributary Area:TBD
Tributary Agencies:
` ;:► t, f.yam'. a`:.J
•.• } .„;. ..,,,i-:-: : ,C Y,1Y,.+J1 af4_ ii `'
Rolling Hills t .a t;' ,1 j , ��: ,c' 1,
3 , . p:✓ *
it r1
r -j . am, y?,=ra' ' i' '
, i ;7 ' 4di ,
Page I51