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HomeMy WebLinkAboutC-4336 Exhibit "A" MEMORANDUM OF AGREEMENT BETWEEN THE COUNTY OF LOS ANGELES, THE CITIES OF ARCADIA, BRADBURY, DUARTE, MONROVIA AND SIERRA MADRE REGARDING THE ADMINISTRATION AND COST SHARING FOR THE IMPLEMENTATION AND ADMINISTRATION OF THE WATERSHED MANAGEMENT PROGRAM (WMP) FOR THE RIO HONDO/SAN GABRIEL RIVER WATER QUALITY GROUP This Memorandum of Agreement ("MOA") is made and entered into as of the date of the last signature set forth below ("EFFECTIVE DATE") by and among the COUNTY OF LOS ANGELES ("COUNTY"), a political subdivision of the State of California, and the CITIES OF ARCADIA, BRADBURY, DUARTE, MONROVIA, AND SIERRA MADRE ("CITIES"), municipal corporations. These entities shall be known herein as PARTIES or individually as PARTY. RECITALS WHEREAS, the Regional Water Quality Control Board, Los Angeles Region ("REGIONAL BOARD") adopted National Pollutant Discharge Elimination System Municipal Separate Storm Sewer System Permit Order No. R4-2012-0175 "MS4 PERMIT" OR "PERMIT"; and WHEREAS, the MS4 Permit became effective on December 28, 2012, and requires that the Los Angeles County Flood Control District, COUNTY, and 84 of the 88 Cities (excluding the Cities of Avalon, Long Beach, Palmdale, and Lancaster) within the County of Los Angeles comply with the prescribed elements of the MS4 Permit; and WHEREAS, the MS4 Permit identified the PARTIES as located within the Rio Hondo/ San Gabriel Watershed Management Area; and WHEREAS, the PARTIES entered into a memorandum of understanding on August 29, 2013 to form the Rio Hondo/San Gabriel River Water Quality Group ("GROUP") and collaborate in the development of an Enhanced Watershed Management Program ("EWMP DEVELOPMENT MOU") in an effort to comply with the requirements of the MS4 Permit; and WHEREAS, the PARTIES submitted an Enhanced Watershed Management Program ("EWMP") to the REGIONAL BOARD on June 28, 2015, which was approved on April 21, 2016. The REGIONAL BOARD's approval of the EWMP indicated to begin implementation immediately; and Page 1 WHEREAS, the PARTIES amended the EWMP DEVELOPMENT MOU ("FIRST AMENDED MOU") to collaborate on the initial steps to further investigate project feasibility and finalize the EWMP revision; and WHEREAS, the pursuant to the FIRST AMENDED MOU the PARTIES agreed to work together to revise the EWMP; and WHEREAS, the PARTIES submitted a revised Enhanced Watershed Management Program (the "rEWMP") to the REGIONAL BOARD on March 30, 2018, and WHEREAS, the REGIONAL BOARD ultimately approved the rEWMP on March 14, 2019, but ultimately downgraded the revised program to a Watershed Management Program (the "WMP"), which was conditionally approved on March 14, 2019; and WHEREAS, the REGIONAL BOARD's conditional approval of the WMP dated May 17, 2019 required that the PARTIES begin implementation immediately, and the PARTIES have agreed to a cost sharing formula set forth in Table 2.a of Exhibit A, which is attached and made part of this MOA; and WHEREAS, the PARTIES collaboratively prepared a final Request for Proposal ("REQUEST") to obtain Consultant(s) to develop feasibility studies to ascertain whether the projects discussed in the WMP are feasible from a technical and financial perspective, and whether any other modifications are required by the MS4 Permit. A copy of the REQUEST is attached hereto as Exhibit B, and incorporated into this MOA by reference; and WHEREAS, the PARTIES propose that various Consultants be retained to perform the work required by the REQUEST, at a total cost not to exceed $1,623,041; and WHEREAS, the Consultants shall obtain approval from the Oversight Committee (defined below) for any action taken in accordance with this MOA; and WHEREAS, the PARTIES have agreed that the CITY OF ARCADIA ("ARCADIA") will be the contracting PARTY for any agreements necessary to implement the narrow requirements of this MOA; and WHEREAS, the COUNTY is developing the concept and 30% plans for two green street projects within the watershed's boundaries pursuant to the WMP, and has conducted preliminary investigations on a third green street project (the "GREEN STREETS PROJECTS"); and WHEREAS, PARTIES have agreed to share the cost for COUNTY to develop these green street projects, and to credit the COUNTY for these costs as set forth in Table 2.a of Exhibit B; and NOW, THEREFORE, in consideration of the mutual benefits to be derived by the PARTIES, and of the promises contained in this MOA, the PARTIES agree as follows: Page 2 1. Recitals. The recitals set forth above are incorporated into this MOA. 2. Purpose. The purpose of this MOA is to cooperatively fund work specifically required by the REQUEST. This MOA shall not impact the PARTIES individual obligation to otherwise comply with the requirements of the MS4 PERMIT or WMP. 3. Cooperation. The PARTIES shall cooperate in good faith with one another to implement this MOA. Notwithstanding the foregoing, it shall not be a breach of this MOA for any PARTY to withhold its consent for any decision contemplated by this MOA. 4. Term. The term of this MOA shall become effective as of the date of the last signature set forth below, and shall remain in effect until ARCADIA has provided written notice of completion of the REQUEST described herein and has provided the PARTIES with a final accounting set forth in Section 5 (d). 5. Responsibilities of ARCADIA: (a) Contract Manager. Subject to the limitations and restrictions of this Agreement, ARCADIA shall act as the contract manager on behalf of, and for the benefit of, PARTIES, and as such agrees to invoice the PARTIES for their pro- rata share of the cost of implementing this MOA, as described in Tables 1 thru 3 of Exhibit A. (b) Payments to Third Parties. ARCADIA shall have no obligation to pay vendors or Consultants any funds other than those funds ARCADIA owes for its proportional share, as set forth in Exhibit A, and those funds remitted by each PARTY to ARCADIA following invoice. In the event ARCADIA, in its sole discretion, elects to make a payment on behalf of a Delinquent PARTY, as defined in Section 6(d), the Delinquent PARTY shall reimburse ARCADIA the funds expended. If ARCADIA fails to timely pay vendors or Consultants for its proportional share or to forward funds remitted to ARCADIA from the PARTIES to be paid to said vendors or Consultants, as set forth in Table 3 of Exhibit A, ARCADIA shall be considered a Delinquent PARTY, and the other PARTIES shall have the same rights and remedies against ARCADIA as it (ARCADIA) would have against a Delinquent PARTY, as provided herein and particularly as described in Section 6(d), below. (c) ARCADIA shall solicit proposals for, award, and administer Consultant contract(s) for the work specifically outlined in the REQUEST, which is attached hereto as Exhibit B and in accordance with ARCADIA's procurement requirements. ARCADIA shall not award any contracts to a Consultant contemplated by this MOA without the express written approval of all of the PARTIES pursuant to Section 6(b). The PARTIES agree, that upon execution of an agreement with a Consultant and/or vendor pursuant to this MOA, that the Page 3 Consultant(s)' or vendor activities will be directed by the Oversight Committee as set forth in Paragraph 6 (d) ARCADIA shall utilize the funds deposited by the PARTIES only for payment of the Consultant or vendor for the work performed pursuant to the REQUEST. Funds will also be used to offset and credit the COUNTY's cost- share under this MOA for work done on the two green street projects. ARCADIA will provide the PARTIES with a final accounting of funds expended and remaining at the end of the term of this MOA. (e) ARCADIA shall provide the PARTIES with an electronic copy of any reports (drafts and final) to ultimately be submitted to the REGIONAL BOARD within 5 business days of receipt from the Consultant. (f) ARCADIA will notify the PARTIES if actual expenditures are anticipated to exceed the cost estimates contained in Exhibit A and obtain written approval of such expenditures from all PARTIES. Upon approval of additional expenditures, the PARTIES agree to pay each PARTY'S proportional share of additional expenditures in an amount not to exceed ten (10%) percent of the current estimated cost, as shown in Table 3 of Exhibit A. This 10% contingency will not be invoiced, unless actual expenditures exceed the cost estimates found in Table 3 of Exhibit A. Expenditures that exceed the 10% contingency will require an amendment to this MOA. (g) ARCADIA will submit on behalf of the PARTIES all SUBMITTALS approved pursuant to this MOA. 6. THE PARTIES further agree: (a) Cooperation. The PARTIES shall make a good faith effort to cooperate with one another to achieve the purposes of this MOA by providing information about project opportunities, reviewing deliverables in a timely manner, and informing their respective administrators, agency heads, and/or governing bodies, as necessary. Notwithstanding the foregoing, it shall not be a breach of this MOA for any Party to withhold its consent for any decision contemplated by this MOA. (b) Oversight Committee & Administration. (i) The PARTIES agree that each PARTY shall designate a representative to act on the PARTIES' behalf. These representatives or their designee shall form the "Oversight Committee." Each member of the Oversight Committee, shall have the requisite authority to participate in the day-to-day operations of the GROUP, and shall administer the terms and conditions of this MOA on behalf of their respective PARTY, except as limited by the PARTIES' individual governing regulations, such as municipal codes or county codes. The Oversight Committee shall be Page 4 authorized to and responsible for approving all contracts with any future Contractor entered into pursuant to this Agreement. For example, members of the Oversight Committee shall still remain subject to the spending limits and/or authority limitations imposed on employees of governmental agencies for any expenditures above those set forth in Exhibit A. Any action of the Oversight Committee required or authorized by this Agreement (including direction to any consultant) shall be taken by unanimous approval. However, as a limited exception to this unanimity requirement, the scheduling of meetings and meeting locations shall be determined by a weighted majority vote, with weights assigned to each member of the Oversight Committee in accordance with the percentage of area assigned to that member's PARTY in Table 2a of Exhibit A. (ii) In addition to the day-to-day operations, the Oversight Committee shall be authorized to approve, and be responsible for approving all reports, studies or other submittals and materials created as a result of the Consultant's implementation of the REQUEST to be submitted to the REGIONAL BOARD and/or to other agencies on behalf of the GROUP ("SUBMITTAL"). As such, within thirty (30) business days of receiving a draft SUBMITTAL, members of the Oversight Committee or their designees shall provide any revisions or comments to the Consultant, and the Consultant shall incorporate those revisions into the draft SUBMITTAL, and provide a copy of a revised SUBMITTAL to the Oversight Committee shortly thereafter. In the event the Consultant cannot incorporate a PARTY's revision due to a disagreement amongst the PARTIES and/or the Consultant, the PARTIES shall meet and confer in good faith to resolve the dispute, and the Oversight Committee may then direct the Consultant to modify the SUBMITTAL as agreed upon by the PARTIES. Within 30 business days of receiving a revised SUBMITTAL, members of the Oversight Committee or their designees shall approve in writing, or deny the Consultant's submission of the revised SUBMITTAL to the REGIONAL BOARD. Consultant shall not, and ARCADIA may not authorize Consultant to, submit any SUBMITTAL to the REGIONAL BOARD or any other public agency on behalf of the PARTIES, unless and until it/they have been approved, in writing, for submittal by all PARTIES hereto by the Oversight Committee pursuant to the requirements of this Section 6(b), excepting only a PARTY or PARTIES that has been EXCLUDED or WITHDRAWN from this MOA. Under no circumstances may any SUBMITTAL be attributed to or sent on the behalf of any PARTY or the GROUP in general that has not provided its written approval as required by this Section 6(b). (iii) In order to approve any SUBMITTAL pursuant to this Section 6(b), each member of the Oversight Committee shall provide the following in regards to their related PARTY: Page 5 (A) Written confirmation of the PARTY's approval of the SUBMITTAL; and a (B) Written statement that the appropriate authority has approved of the SUBMITTAL. For example, if the SUBMITTAL requires City Council approval, the member of the Oversight Committee shall confirm that the City Council provided the requisite approval. (iv) The Oversight Committee may meet periodically, on an as- needed basis, and as agreed by the Oversight Committee. (v) The PARTIES recognize and agree that no Oversight Committee member, or its designee may commit, bind, or in any way limit the PARTIES' individual discretion or authority, absent such representatives being granted proper authority pursuant to the PARTIES' own municipal codes and/or regulations. (c) Payment. The PARTIES shall pay ARCADIA, subject to their annual budget authority, for their proportional share of the estimated cost for implementing this MOA, not to exceed the invoice amounts as shown in Table 3 of Exhibit A, within sixty days (60) days of receipt of the invoice from ARCADIA. The cost estimates presented in Exhibit A have been agreed upon by the PARTIES, and may be amended only by written agreement of the PARTIES, except as otherwise provided in this MOA in the event a PARTY WITHDRAWS or is EXCLUDED. (d) Credit to County. The PARTIES agree to share in the cost of the development of the Green Streets Projects by COUNTY as set forth in Table 2.b of Exhibit A. The areas outside of the project boundaries shall be developed by Consultants. Should the credit to COUNTY exceed COUNTY's cost-share, the remaining credit may be used for a future agreement. (e) Delinquent Payment. A PARTY's payment is considered delinquent ninety (90) days after ARCADIA sends an invoice, at which point the PARTY shall be known as a "Delinquent PARTY". Should a PARTY or PARTIES become a Delinquent PARTY or PARTIES, ARCADIA shall submit a letter to the Delinquent PARTY or PARTIES providing written notice of the PARTY's delinquent status. If the Delinquent PARTY or PARTIES remain delinquent ten days after receipt of the delinquency notice, said PARTY or PARTIES shall then be deemed to have terminated participation as a PARTY to this MOA only ("EXCLUDED PARTY") and their name(s) may be removed from any SUBMITTALs created pursuant to this MOA only after that PARTY has been EXCLUDED. Notwithstanding the foregoing, and pursuant to Section 9(I) of this Agreement, whether or not a PARTY is EXCLUDED under this section shall have no bearing on the PARTY's participation and membership within the WMP. Any EXCLUDED PARTY or PARTIES' delinquent amount(s) will be paid consistent Page 6 with the remaining PARTIES' (including ARCADIA's) pro-rata share pursuant to the cost sharing formula in Table 2 of Exhibit A, as adjusted to remove the EXCLUDED PARTY from the allocation. ARCADIA is authorized and responsible for revising Table 3 of Exhibit A to show the recalculated costs for each remaining participating PARTY in accordance with this MOA, without requiring amendment to this MOA; the revised exhibits will be included with the next invoice to the remaining PARTIES. The remaining PARTIES shall retain all contractual, legal, and equitable rights and causes of action to recover any delinquent amounts paid that were owed by an EXCLUDED PARTY or PARTIES that failed to make such payments. (f) Interest Accrual. Any interest accrued on the funds collected per this MOA during the term of this MOA shall be refunded or credited toward any amount owed at the time of the final accounting according to the cost sharing formula set forth in Table 2.a of Exhibit A. ARCADIA shall report to the PARTIES the amount of the interest accrued on the collected funds at the time of the final accounting. (g) Excess Funds. Any collected funds not spent in any fiscal year period shall be refunded or credited toward any amount owed by the applicable PARTY at the time of the final accounting according to the cost sharing formula set forth in Table 2.a of Exhibit A. Subject to agreement by ARCADIA, any funds which are to be reimbursed to a PARTY may be reimbursed through credits towards future invoices and agreements, if requested in writing by that PARTY. (h) Consultant's Access. Each PARTY shall allow the Consultant reasonable access and entry, on an as needed basis, during the term of this MOA to the PARTY's storm drains, channels, catch basins, and similar properties ("FACILITIES") to achieve the purposes of this MOA, provided, however, that prior to entering any PARTY's facilities, the Consultant shall secure all necessary permits and provide written notice as required by these permits. (i) Sharing of Information. The PARTIES agree to provide all public records in their possession and available for release to ARCADIA that are deemed necessary by the PARTIES to perform the obligations imposed by this MOA at no cost to ARCADIA. Notwithstanding the foregoing, nothing in this Agreement shall require any PARTY to provide or produce any information and/or documentation that is otherwise privileged, protected or exempt from disclosure under California's Public Records Act. 7. Indemnification. (a) Except as otherwise provided in this paragraph, each PARTY shall indemnify, defend, and hold harmless each other PARTY, including their special districts, elected and appointed officers, employees, agents, attorneys, and designated volunteers from and against any and all liability, including, but not limited to demands, claims, actions, fees, costs, and expenses (including Page 7 reasonable attorney's and expert witness fees), arising from, and in relative proportion to, its own negligence or willful misconduct under this MOA; provided, however, that no PARTY shall indemnify another PARTY for the latter PARTY's own negligence or willful misconduct. (b) The PARTIES agree that any liability borne by or imposed upon any PARTY or PARTIES hereto as a result of the PARTIES' implementation of this MOA and not as a result of the PARTY or PARTIES own negligence or willful misconduct, shall be fully borne by all the PARTIES in accordance with their percentage share of cost ("LIABILITY PERCENTAGE"), as set forth in the Column "Percent of Area" found in Table 2a of this MOA. Notwithstanding the foregoing, this subsection shall not apply where any liability result(s) from the actions of one or more PARTIES contemplated by subsection 7(a). (c) If any PARTY pays in excess of its LIABILITY PERCENTAGE in satisfaction of any liability borne by or imposed upon any PARTY or PARTIES hereto as a result of the PARTIES' implementation of this MOA without negligence or willful misconduct, such PARTY shall be entitled to contribution from each of the other PARTIES; provided, however, that the right of contribution is limited to the amount paid in excess of the PARTY 's LIABILITY PERCENTAGE and provided further that no PARTY may be compelled to make contribution beyond its own LIABILITY PERCENTAGE of the entire liability; and provided that no PARTY shall indemnify another PARTY for that other PARTY's own negligence or willful misconduct. (d) To the maximum extent permitted by law, ARCADIA shall require the Consultants retained pursuant to this MOA to agree to indemnify, defend, and hold harmless each PARTY, their special districts, elected and appointed officers, employees, attorneys, agents, and designated volunteers from and against any and all liability, including, but not limited to demands, claims, actions, fees, costs, and expenses (including attorney and expert fees), arising from or connected with the Consultants' performance under its agreement with ARCADIA which is authorized via this MOA. In addition, ARCADIA shall require the Consultants to carry, maintain, and keep in full force and effect a comprehensive insurance policy or policies, and each PARTY, their elected and appointed officers, employees, attorneys, agents and designated volunteers shall be required to be named as additional insureds on the policy(ies) with respect to liabilities arising out of the Consultants' work. These requirements will also apply to any subcontractors hired by the Consultant. 8. Early Termination or Withdrawal (a) This MOA may be terminated upon the express written agreement of all PARTIES. If this MOA is terminated, any remaining funds not due and payable or otherwise legally committed to a Consultant(s) shall be distributed to Page 8 the remaining PARTIES (not including any EXCLUDED or WITHDRAWN PARTY or PARTIES, as defined below) so that all such remaining PARTIES have paid no more than their pro-rata share (in accordance with the most current allocation set forth in Exhibit A). Completed work shall be owned by all PARTIES at the time of completion of the work who are not EXCLUDED or WITHDRAWN PARTIES. Similarly, rights to uncompleted work by the Consultant still under contract are to be owned by the PARTY or PARTIES who are not EXCLUDED or WITHDRAWN PARTIES at such time. (b) A PARTY may withdraw from this MOA ("WITHDRAWN PARTY") upon 60 days written notice to the other PARTIES, subject to payment of any properly issued invoice received from ARCADIA prior to or during the 60-day notice period for its share of the cost of the phase of work, as defined in Exhibit A, Table 1 , underway as of the date of its notice of withdrawal, calculated in accordance with the cost sharing formula set forth in Table 2.a of Exhibit A. Table 2.b of Exhibit A shall also be adjusted to maintain consistent treatment of the County's cost sharing allocation. The effective withdrawal date shall be the sixtieth (60th) day after ARCADIA receives the withdrawing PARTY's notice to withdraw from this MOA and all required payments have been made. ARCADIA shall refund to the WITHDRAWN PARTY any unused funds paid by the WITHDRAWN PARTY's effective withdrawal date. All PARTIES understand, acknowledge, and agree that withdrawal from this MOA will terminate any responsibility, liability, or obligation of the WITHDRAWN PARTY under this MOA commencing on the effective withdrawal date. (c) In addition to the foregoing, in the event that the numeric effluent limitations ("NELs") or NEL-related terms of the PERMIT are invalidated or otherwise declared unlawful or unenforceable by a final and non-appealable judgment of a court of competent jurisdiction, all PARTIES retain the right to withdraw from this MOA via written notice to ARCADIA, effective immediately. Should a PARTY withdraw pursuant to this Section 8(c), the withdrawing PARTY shall be liable to reimburse ARCADIA for all of its share of costs incurred pursuant to this MOA, as of the date of that withdrawal. Likewise, ARCADIA shall refund to the WITHDRAWN PARTY any unused funds paid by the WITHDRAWN PARTY's effective withdrawal date. (d) If any PARTY withdraws from this MOA, the remaining PARTIES' cost share allocation shall be adjusted consistent with the cost sharing formula in Table 2.a of Exhibit A. Table 2.b of Exhibit A shall also be adjusted to maintain consistent treatment of the County's cost sharing allocation. 9. General Provisions. (a) Notices. Any notices, bills, invoices, or reports relating to this MOA, and any request, demand, statement, or other communication required or permitted hereunder shall be in writing and shall be delivered to the PARTIES at Page 9 the addresses set forth in Exhibit D attached hereto and incorporated herein by reference. The PARTIES shall promptly notify each other of any change of contact information, including personnel changes, provided in Exhibit D, which notice serves to amend Exhibit D without requiring a formal amendment to this MOA. Written notice shall include notice delivered via e-mail or fax. A notice shall be deemed to have been received on (a) the date of delivery, if delivered by hand during regular business hours, or by confirmed facsimile or by e-mail; or (b) on the third (3rd) business day following mailing by registered or certified mail (return receipt requested) to the addresses set forth in Exhibit D. (b) Authority. Each of the persons signing below on behalf of a PARTY represents and warrants that he or she is authorized to sign this MOA on behalf of such PARTY. (c) Relationships of the PARTIES. The PARTIES are, and shall at all times remain as to each other, wholly independent entities. No PARTY to this MOA shall have power to incur any debt, obligation, or liability on behalf of any other PARTY unless expressly provided to the contrary by this MOA. No employee, agent, or officer of a PARTY shall be deemed for any purpose whatsoever to be an agent, employee, or officer of another PARTY. (d) Binding Effect. This MOA shall be binding upon, and shall be to the benefit of the respective successors, heirs, and assigns of each PARTY; provided, however, no PARTY may assign its respective rights or obligations under this MOA without the prior written consent of all of the other PARTIES. (e) Amendment. Except as otherwise provided in this MOA, the terms and provisions of this MOA may not be amended, modified, or waived, except by an instrument in writing signed by all PARTIES that have not withdrawn pursuant to Section 8 or been EXCLUDED by reason of an uncured delinquency of payment. (f) Law to Govern. This MOA is governed by, interpreted under, and construed and enforced in accordance with the laws of the State of California. Venue shall be in Los Angeles County. (g) Severability. If any provision of this MOA shall be determined by any court to be invalid, illegal, or unenforceable to any extent, the remainder of this MOA shall not be affected, and this MOA shall be construed as if the invalid, illegal, or unenforceable provision had never been contained in this MOA. (h) Entire Agreement. This MOA constitutes the entire agreement of the PARTIES with respect to the subject matter hereof. (i) Waiver. Waiver by any PARTY to this MOA of any term, condition, or covenant of this MOA shall not constitute a waiver of any other term, condition, or covenant. Waiver by any PARTY to any breach of the provisions of this MOA Page 10 shall not constitute a waiver of any other provision, nor a waiver of any subsequent breach or violation of any provision of this MOA. (i) Counterparts. This MOA may be signed in multiple counterparts with the same force and effect as if all original signatures appeared on one copy; and in the event this MOA is signed in counterparts, each counterpart shall be deemed an original and all of the counterparts shall be deemed to be one agreement. (k) Drafting. All PARTIES have been represented by counsel in the preparation and negotiation of this MOA. Accordingly, this MOA shall be construed according to its fair language. Any ambiguities shall be resolved in a collaborative manner by the PARTIES and shall be rectified by amending this MOA as described in Section 9(e). (I) Impact on WMP. Nothing in this MOA shall be read or interpreted to authorize any PARTY or group of PARTIES to alter the terms of and/or parties to the WMP, as they are entirely separate documents. Specifically, whether a PARTY is considered EXCLUDED or WITHDRAWN as defined in this MOA, shall have no impact on whether the PARTY is still a party to the WMP. IN WITNESS WHEREOF, the PARTIES hereto have caused this MOA to be executed by their duly authorized representatives and affixed as of the date of signature of the PARTIES: [Signatures on following pages] Page 11 COUNTY OF LOS ANGELES ( t By _ S / Zv 7#14-** kie_ MARK PESTREL A Date Director of Public Works APPROVED AS TO FORM: By ��-�.--�— ,,� �, C. c/ 3c= MARY C. WICKMAN, County Counsel Date Page 12 CITY OF ARCADIA By Dominic Lazzaretto 41, City Manager Date ATTEST jo ByAi T 3 10 2020 City Clerk Date APPROVED AS TO FORM: By l /2020 Stephen P. Deitsch City Attorney Date Page 13 CITY OF BRADBURY Bye 1,4 May 19,2020 NAME, POSITION Date Kevin Kearney, City Manager ATTEST: By C-1�au May 19,2020 NAME, City Clerk - Date Claudia Saldana APPROVED AS TO FORM: MayAd.L4" 19,2020 By NA , City Attorney Date Cary Reisman Page 14 CITY OF DUARTE 5:1212r,By — DANIEL JORDAN, CITY MANAGER Date ATTEST BY / _ 7 C �- -� __ -- 5' MARLA AKANA, City Clerk Date APPROVED AS TO FORM as DAVID COSGROVE, City Attorney Date Pate 15 CITY OF MONROVIA By Dylan Feik, ty Manager Date ATTEST: By 01110 i �� ` _`- ls2 Alice D. Atkins, MMC, City Clerk Date APPROVED AS TO FORM: CPA__ By ek. i_ c 4 g') 20'ac> Craig A. Steele, City Attorney Date Page 16 CITY OF SIERRA MADRE By _ (zZ r z Gabe Engeland, City Manager Date ATTEST: By 7414L/AAVS5;IktAittDate Laura Aguilar, City Clerk APPROVED AS TO FORM: By5/2,q /Za20 Aleks 4osian, Assistant City Attorney Date i/ k Page 17 of 24 EXHIBIT A Rio Hondo/San Gabriel River Water Quality Group Multi-Benefit Stormwater Project Concept Reports Contributions Table 1. Request for Proposal Task Items Task Items Cost Phase 1 Tasks 1-4 $296,774 Phase 2 Tasks 5-13 $549,980 Phase 3 Tasks 14-19 $776,287 Green street projects developed by County' $600,000 10% Contingency $162,304.10 Footnote: 1. Parties agree to cost-share the two green street projects already under development by the County Page 18 Table 2a.Cost Sharing Formula PartyAcresed Percent of Base Fee(1/6th Cost based on (Developed Total Cost Area(2) (t)of 10%) Acres(90%) Land) City of Arcadia 11 34.16% $37,050.68 $683,481.55 $720,532.23 City of Bradbury 1.9 5.90% $37,050.68 $118,055.90 $155,106.59 City of Duarte 3.6 11.18% $37,050.68 $223,684.87 $260,735.55 _City of Monrovia 8 24.84% $37,050.68 $497,077.49 $534,128.17 City of Sierra Madre 2.8 8.70% $37,050.68 $173,977.12 $211,027.81 County of Los Angeles 4.9 15.22% $37,050.68 $304,459.96 $341,510.65 Total 32.2 100% $222,304.100 $2,000,736.90 $2,223,041.00 1. Each City's Base Fee cost share equals 116th of 10% of total contracted costs. 2. Based on percent of developed land in each Party area of the total watershed area (excludes Angeles National Forest land) Page 19 Table 2b.Cost Sharing w/Credit to County Party Total Cost Total Cost Adjusted City of Arcadia $720,532.23 $720,532.23 City of Bradbury $155,106.59 $155,106.59 City of Duarte $260,735.55 $260,735.55 City of Monrovia $534,128.17 $534,128.17 City of Sierra Madre $211,027.81 $211,027.81 County of Los Angeles' $341,510.65 $0 Total $2,223,041.00 $1,881,530.35 1. County's $341,510.65 will be credited with the $600,000 spent on developing 2 green street projects. The balance of$258,489.35 may be credited to the County in a future cost-sharing agreement. Page 20 • Table 3. Annual Cost-Share/Invoice Amount Cost Formula: A. 10% Base=[(Total Consultant costs)X 10%]/6 parties B. 90% Land Use = [(Total Consultant costs X90%] X Percentage of total land area (not including Angeles National Forest) Multi-Benefit Stormwater Multi-Benefit Stormwater Total Project Feasibility Studies Project Feasibility Studies Costs FY 19-20 (Phases 1 &2) FY 20-21 (Phases 3&4) Arcadia $360,266.12 $360,266.11 $720,532.23 Bradbury $77,553.30 $77,553.29 $155,106.59 Duarte $130,367.78 $130,367.77 $260,735.55 Monrovia $267,064.09 $267,064.08 $534,128.17 Sierra Madre $105,513.91 $105,513.90 $211,027.81 County of Los Angeles $0 $0 $341,510.65. Total $940,765.20 $940,765.15 $2,223,041.00 County's$341,510.65 will be credited with the$600,000 spent on developing 2 green street projects.The balance of$258,489.35 may be credited to the County in a future cost-sharing agreement. On or before November 30th of each year, the Oversight Committee shall review the Invoicing Schedule may adjust the percent of Cost Share Allocations due each year as deemed necessary for such reasons including, but not limited to, revision in Contracted Costs, Scope of Work, scheduling of work, and/or costs related to environmental review. However, any such adjustment and/or modification shall require approval by the Oversight Committee. Page 21 EXHIBIT B "REQUEST FOR PROPOSALS" RIO HONDO/SAN GABRIEL RIVER WATER QUALITY GROUP REQUEST FOR PROPOSALS FOR MULTI- BENEFIT STORMWATER PROJECT CONCEPT REPORTS 11111.1111 RIO HONDO SAN GABRIEL RIVER WATER QUALITY GROUP Administered by: City of Arcadia Administered on behalf of: Cities of Arcadia, Bradbury, Duarte, Monrovia, and Sierra Madre, and County of Los Angeles Issuance Date: September 23, 2019 Request for Information/ Clarification Due Date: October 10, 2019 at 5:00 p.m. Proposal Due Date: Tuesday, October 22, 2019 at 11:00 a.m. Interview: Wednesday, October 30, 2019 Submit Proposal to: City of Arcadia Office of the City Clerk Attn: Vanessa Hevener, Environmental Services Officer 240 West Huntington Dr. P.O. BOX 60021 Arcadia, CA 91066-6021 Table of Contents PURPOSE BACKGROUND PROJECT DESCRIPTION 1. Arcadia Arboretum Natural Treatment and Groundwater Recharge Facility 2. Rio Hondo Ecosystem Restoration Project and Arcadia Wash Water Conservation Diversion 3. Encanto Park 4. Basin 3E Enhancements at Santa Fe Spreading Grounds Project 5. Green Streets (Big Dalton Wash and Eaton Wash) SCOPE OF WORK—PHASE 1 1. Geotechnical Evaluation 2. Preliminary Environmental Site Screening (PESS) 3. Seismic Analysis 4. Utility Search SCOPE OF WORK—PHASE 2 5. Environmental Evaluation 6. Field Work 7. Topographic and Seismic Survey 8. Hydrology 9. Community and Stakeholder Outreach 10. Develop Stormwater Capture Capacity and Conduct Water Quality Analysis 11. GIS Maps 12. Water Conservation 13. Feasibility Report SCOPE OF WORK- PHASE 3 14. Permits 15. Project Cost and Schedule 16. Safe Clean Water Program Scoring Criteria 17. Operational and Maintenance 18. Monitoring Plan (Optional) 19. Final Deliverable SCOPE OF WORK—PHASE 4(OPTIONAL) 20. Environmental Documentation/Permits PURPOSE The Rio Hondo/San Gabriel River Water Quality Group (Group) on behalf of the Cities of Arcadia, Bradbury, Duarte, Monrovia and Sierra Madre, and County of Los Angeles (County), is seeking proposals from qualified professional consultants to prepare a feasibility study for five structural regional Best Management Practice (BMP) projects and green street projects that have been identified in the Rio Hondo/San Gabriel River Water Quality Group's Watershed Management Program (WMP). BACKGROUND The National Pollutant Discharge Elimination System (NPDES) Municipal Separate Storm Sewer System, Permit Order No. R4-2012-0175 (MS4 Permit) was adopted on November 8, 2012 by the Los Angeles Regional Water Quality Control Board (Regional Board) and became effective December 28, 2012. The MS4 Permit provides Permittees an option to implement stormwater programs through the development of an Enhanced Watershed Management Program (EWMP) to demonstrate water quality standards compliance. The Cities of Arcadia, Azusa, Bradbury, Duarte, Monrovia, Sierra Madre, County and Los Angeles County Flood Control District (LACFCD) formed the Rio Hondo/San Gabriel River Water Quality Group (Group) (Figure 1) and developed their EWMP Plan to submit to the Regional Board. The Final EWMP Plan was submitted on June 28, 2015 and received the Regional Board's Final approval on April 21, 2016. Subsequently, in March 2018, the Group submitted proposed modifications to its EWMP in the form of a Revised Enhanced Watershed Management Program or rEWMP. The Proposed Revised EWMP entails extensive and significant modifications to the Group's existing EWMP, including an updated Reasonable Assurance Analysis, changes to watershed control measures, and changes to compliance schedules (while the City of Azusa was a member of the RH/SGR WQG during development of the 2016 EWMP, they are not included as a member agency participating in the update). The Final WMP Plan is posted on the Regional Board's website and can be access with the following link: https://www.waterboards.ca.gov/losangeles/water issues/programs/stormwater/municipal/v, atershed management/san gabriel/rio hondo/index.html J H , r Rh,SGRWQi, .. iU5 Aix]C'lts County Watrrshrds -LAN YJdt+9sikd 4GR Wat.-surd N It 1 2 Figure 1-Rio Hondo/San Gabriel River Water Quality Group(excluding City of Azusa) The WMP Plan identifies five regional projects that propose infiltration trenches, infiltration basins and subsurface infiltration systems as well as green streets. The five structural regional BMP projects, listed below for this scope of work, include the five regional projects and green street projects from the WMP. BMP Project Watershed Arboretum Natural Treatment and Rio Hondo/Los Angeles River Groundwater Recharge Facility Rio Hondo Ecosystem Restoration Project & Rio Hondo/Los Angeles River Arcadia Wash Water Conservation Diversion Basin 3E Enhancements at Santa Fe San Gabriel River Spreading Grounds Project Encanto Park San Gabriel River Big Dalton Wash Green Streets Big Dalton Wash/San Gabriel River Rio Hondo Green Streets Eaton Wash/Rio Hondo In order to take the next step towards implementing the WMP, the Group is seeking information to identify the feasibility and facilitate the five potential BMP projects and green streets into the design phase which are shown in Figure 2. r ; I i Sierra Madre _ ` .gym .. I ' r Illrrr"' sr Q. • 47 �` Bva radbury + Duarte Arcadia Wash , Encanto Park • Ecosystem Restoration and r't i •) Stormwater Capture Project,] Groundwater Recharge Monrovia (' �tij� Project ../ f----- v Basin 3E pat ... " Arcadia r._+ _.._ j 0 r +'-� Enhancements t` r r_, r r ��; Unincorporated).________ 1 ilil ; `4 . �'4°4 9. Gad''. FIL- ' Unincorporated 4: Rio Hondo 1'1- Ecosystem Restoration Project and • • Arcadia Wash - •l-cic) ` Water Conservation Diversion / Lr"' U Figure 2—Proposed Regional BMP Project Sites and Green Streets PROJECT SITE DESCRIPTIONS 1. ARBORETUM NATURAL TREATMENT AND GROUNDWATER RECHARGE FACILITY The regional BMP system will divert runoff from Arcadia Wash to a sediment forebay for pretreatment, with flows then entering a wetland surrounded by two groundwater recharge ponds.This system will have a controlled outlet with pump station to convey up to 1 cfs of treated water through a meandering stream to Baldwin Lake. The site layout is provided in Figure 3. The LACFCD is managing a Baldwin Lake and Tule Pond Restoration Project, which will require coordination. a? = 1-OITYOFSIERF:AMADF.E,ANDTHECOUNTY OFL_.:-'' __c_ ARCADIA ARBORETUM NATURAL TREATMENT AND GROUNDWATER RECHARGE PROJECT I ,c.5 APIGEtESCUU}dTY +„¢ u , t'R£NM i ,.. G ... �nr r. t. K I at - � C30 ate I {>w '� 1 , , 1 , o I0 •,,. , 10.x';1.. _ ,.,':,*. .•, /0,, - ---- Ia0 00 x''`2,1 .0',5�ry' ' 1. 4_rr:xn """'"'"•_____=,•_ AttC��bYe • *.U:FS?a � h O \ *• I -_ -, / , ,( f :r 0 125 250 500 750 1.000 — — Feet -- a ' PLAN VIEW (See tact Sheet for JiddNional Detatist Figure 3—Arboretum of Los Angeles County Arboretum Design Parameters Design Parameter Assumed Drainage Area (acres) 1,633 Total Footprint (acres) .06 Load Reduction (Ib/yr) 35.7 Volume Addressed (acre-feet) TBD by Consultant 2. RIO HONDO ECOSYSTEM RESTORATION PROJECT AND ARCADIA WASH WATER CONSERVATION DIVERSION The concept for the Rio Hondo Ecosystem Restoration stormwater BMP and Arcadia Wash Water Conservation Diversion is split into two phases. These phases are discussed below. Phase 1—Arcadia Wash Water Conservation Diversion Phase 1 of this Regional BMP System will focus on water conservation efforts for Arcadia Wash to recharge water into the San Gabriel Groundwater Basin.This phase will not only provide water conservation benefits by recharging flow from Arcadia Wash, but will also provide incidental water quality benefits to help meet the 50% milestone for the LA River Metals TMDL. Phase 1 of this project is primarily a water conservation project, and is considered an update to the baseline watershed model rather than a water quality BMP. Runoff from Arcadia Wash will be diverted to a pretreatment device at the intersection of Live Oak Avenue and conveyed approximately 10,000 to the east to Sawpit Wash. The flows will be conveyed via gravity until passing Santa Anita Wash, at which point a pump station will be used to lift the flows for continued gravity flow to Sawpit Wash. CITIES OFARCADIA,M„NR VIA.-NG;IEFF- '-E FIEE LC LNi tLc CCLINTiFLCOECONTP.CL[ISM T "IICTH=COUNTOFL:=-'I3ELES RIO HONDO ECOSYSTEM RESTORATION PROJECT AND ARCADIA WASH WATER CONSERVATION DIVERSION / ,,,,..,t/v. li ___4, - _L ,' �.`i I° 'Mv,"fir-*EY"'' Dissipater& t3 I .r y , r _ l *V — '-dao 0 i o F �e ,.�� Pen Real p u 9.'' t Reed cwnd.se e e 09Q tem.0 m..,'.:' i+. ' 11111 / mom, ,c-44j 0 625 1250 1875 2500 Feet 4. Figure 4—Phase 1 Phase 2—Rio Hondo Ecosystem Restoration Project Phase 2 of this project is where the majority of the regional water quality benefits will be achieved. This phase combines the water conservation benefits from Phase 1 with the additional pollutant load reduction and habitat restoration benefits provided by a constructed wetland.This project will also provide a natural treatment system to the downstream spreading basin at Peck Park. A temporary inundation area adjacent to the wetland will allow for groundwater recharge as well. Phase 2 of this project will divert runoff from Sawpit Wash (and the Phase 1.Arcadia Wash flows) to convey stormwater flows to a sediment basin before entering an 8.3-acre constructed wetlands habitat with adjacent groundwater recharge basins prior to discharge into the Peck Road Water Conservation basins and to the downstream Rio Hondo Channel. See Figure 4 for the Phase 2 site layout. CITIES OF=F.-C1-.LCI IF.=,9=tiJG_I_Fr,-M-GFE LOS ANGELES COUNT,FLOG CONTROL GISTPICT.LN.THE 0.:,UNT,OF L S-1I__Le,- RIO RIO HONDO ECOSYSTEM RESTORATION PROJECT AND ARCADIA WASH WATER CONSERVATION DIVERSION ' 4h I - L__], r • tnz' Peck Roma / 'he p;Gsi -. n ac�.dw ` .- Q` 1 0 625 1.250 1.875 2500 Feel 111111111111111111111; M I FIGURE 4—Phase 2 Rio Hondo Ecosystem Restoration/Conservation Diversion Design Parameters Design Parameter Assumed Drainage Area (acres) 15,777 Total Footprint (acres) 33 Load Reduction (Ib/yr) 818.3 Volume Addressed (acre-feet) TBD by Consultant 3. ENCANTO PARK STORMWATER CAPTURE PROJECT The regional BMP system will divert runoff from the existing 72-inch RCP LACFCD storm drain within a concrete diversion structure, into an 18-inch diameter pipe, from the storm drain to a pretreatment device. Flows from the pretreatment device will enter and underground infiltration gallery via gravity. The site layout is provided in Figure 5. CITY Of GU -RTE ENCANTO PARK STORMWATER CAPTURE PROJECT 0 Ld a grip ENCANTO PARA 0000 •.t 9 410*' / ® /.:N Duarca '" Q4 HistoricalIt Museum P� P` V N• -r ,_ yt .:. ,.- PLAN WIN (See Fact Sheet for Achaitional Details) Figure 5—Encanto Park Encanto Park Design Parameters Design Parameter Assumed Drainage Area (acres) 180 acres Total Footprint (acres) 1.3 Load Reduction (Ib/yr) 64.3 Volume Addressed (acre-feet) 4. BASIN 3E ENHANCEMENTS AT SANTA FE SPREADING GROUNDS PROJECT The regional BMP system will enhance the existing flood control detention basin at the Santa Fe Spreading Grounds (SFSG) by constructing a sediment forebay with an energy dissipating mechanism for pretreatment. Flows from the sediment basin will spill over a concrete weir to a secondary basin where water will be filtered through a sand filter media with a geotextile bottom and perforated underdrains to convey treated flows to the San Gabriel River.There will be a second concrete weir with overflow that will drain into a smaller basin that will provide additional treatment as well as utilize the downstream portion of the basin that is not needed for the water quality sizing. The site layout is provided in Figure 6. -._ CU=OTE=NCIH_ . .-. — BASIN 3E ENHANCEMENTS AT SANTA FE SPREADING GROUNDS PROJECT a_, ems ^- utzpviii vs,..".-1,'--"N!I - . ,..,. ..:,:mvit, ,;,, . ,N-Ar#0,:, ft ,,,..,...,„, ,,,,,, ,,,,,,,,,,..i,-- 1-4' n f Bi3Ml i I J ° - Vic. _ M '3 ' Sr[;7nry*oomiuln- i m / * �i 5 r SQ\ t 0 .,.. 1.0: t s00• - jj ,r.4e`41 3 .".tib '•,.re � illir 11.11111.1111111111.1 Figure 6—Basin 3E BASIN 3E ENHANCEMENTS AT SANTA FE SPREADING GROUNDS Design Parameters Design Parameter Assumed Drainage Area (acres) 2,137 acres Total Footprint (acres) 3. Load Reduction (Ib/yr) 54.7 (3.7% Volume Addressed (acre-feet) 5. GREEN STREETS(BIG DALTON WASH AND EATON WASH) Green streets and distributed stormwater control measures are required to meet the pollutant reduction targets of the WMP in areas not draining to a multi-benefit regional projects (specifically, in the Big Dalton Wash watershed and portions of the WMP area that drain downstream from the Rio Hondo compliance point via Eaton Wash). The WMP assumed bioretention for green streets, but all available BMPs shall be explored, including but not limited to bioretention, biofiltration, modular wetlands, infiltration galleries, dry wells, etc. The WMP green street strategy will be augmented during adaptive management. An illustration of the regional BMP footprint is presented in Figure 7. The required design parameters are in Table 1. Close coordination with the County is required to avoid project overlap with 2 existing green street projects that are already underway (see Tech Memos 3 and 4 of Exhibit_). Unincorporated County Areas Prioritized for Green Streets within the Big Dalton Wash and Eaton Wash Watersheds r !:'''':1'.'`" :117-1- <r'" 1 tr�-A'� z � k 1 � utile Dalton Wa , ' .x tees , tis . rinse kV. Hollyvate ,-1., -: Dwell �"� Linfield c 5 � `. �`Oienlyn $ m �� Foothlt;;21g u c d' _- - Citrus Edge c. Huntington Dr c 5 2 Fondate E Nu.tirgt . m s 5 `.m '1, ;, o r '.3 m. ¢ V f: I Ghent c ' Gladstone W Q < �r.�. Payson 'a-. Newburgh V - - L, �V'Renwick atyarr° p ai r F m ,. cr «r /�t/�j]1y� �W P J \0Oa O 0 0 Tudor w Mashne San Dimas Wash Legend EMP Boundary WLegend Areas Managed by Regional Projects EWMP Boundary e=Potential Green Street Opportunities ` City of Azusa-Not Revising EWMP A • 0 0 2 04 0 6 0.8 I 0 0.25 0.5 0 75 1 1 25 Mites Potential Green Street Opportunities Mies Seance m Credits Source Esn.D.grtalGlobe GeoEye Guenter Geogravhc Service Layer Credits.Source Esri.DignalGete.GeoEye.Eannstar Geographes.CNES,Aubus DS.USDA.USGS. CNESJ- DS.USDA USGS.AeroGRID IGN and ele GIS Use,Commune, AeroGRID IGN.and the GIS User Community-. Figure 7—Green Streets Table 1—Green Streets Design Parameters Design Parameter Big Dalton Wash Eaton Wash Assumed Drainage Area (acres) 674.7 326.6 Total Footprint (acres) 3.8 5.2 Load Reduction (Ib/yr) 54.7 (3.7%) 59.5 (18.4%) Volume Addressed (acre-feet) See Exhibit_for available technical memos, preliminary drainage area boundaries, suggested locations of BMPs, engineering reports, etc. SCOPE OF WORK— PHASE 1 The tasks for this scope of work shall be performed in three phases, with an optional phase 4. Phase 1 shall include Tasks 1 through 4 for all projects,with the exception of 2 green street projects already in progress and managed by the County, and shall be conducted in Fiscal Year 2019-20. The services to be performed in Phase 1 by the Consultant shall include, but not be limited to, the following items of work: 1. Utility Search The Consultant will identify the appropriate right-of-way, conduct a utility search, and propose a design that avoids or resolves utility conflicts. For example, evaluations for dry well must include consideration to distance from power lines and underground utilities. The presence of extensive utility conflicts may affect the feasibility of a proposed project element. Deliverable: Utility Search Report 2. Geotechnical Evaluation The Consultant will conduct a geotechnical evaluation to provide a reasonable understanding of the subsurface conditions and the ability to infiltrate at the proposed location and depth, including, but not limited to, a cone penetration test,a hollow stem test, and/or an infiltration test. The Consultant will utilize Los Angeles County Public Works' guidelines for preparing geotechnical reports and investigating subsurface conditions for constructing stormwater infiltration BMPs. The results of the geotechnical investigation will be utilized to fine tune the project to maximize infiltration. Available Information: Los Angeles County Department of Public Works' guidelines at http://dpw.lacounty.gov/gmed/permits/docs/manual.pdf http://dpw.lacounty.gov/gmed/permits/docs/policies/GS200.1.pdf Deliverables: Geotechnical report. 3. Preliminary Environmental Site Screening(PESS) The Consultant will conduct a preliminary environmental site screening for each project to determine if environmental conditions would prohibit subsurface infiltration of captured stormwater due to potential negative impacts to the environment, and research best available data to analyze the known plumes of pollutants that extend from many sites that could affect ground water if a source of water was introduced. Deliverable: The Consultant will prepare a PESS memo to summarize the results of the screening and provide recommendations on whether infiltration is feasible given the current geologic conditions surrounding each site. 4. Seismic Analysis The Consultant will conduct appropriate seismic analysis for each site to determine if geological conditions would prohibit subsurface infiltration of captured stormwater due to potential negative impacts to the environment. Deliverable:The Consultant will prepare a seismic analysis memo to summarize the results of the analysis and provide recommendations on whether infiltration is feasible given the current geologic conditions surrounding each site. SCOPE OF WORK—PHASE 2 Upon completion of Phase 1, the Rio Hondo/San Gabriel Water Quality Group shall obtain the approval of the Oversight Committee to proceed with Phase 2.The tasks for Phase 2,Tasks 5 thru 13, may or may not be performed for all projects. The Consultant shall not proceed with Phase 2 until they receive a written authorization to proceed. Upon authorization, the services to be performed in Phase 2 may occur in Fiscal Year 2019-20 by the Consultant and shall include, but not be limited to,the following items of work: 5. Environmental Evaluation/Documentation The Consultant will review and evaluate the required environmental clearance processes to satisfy the California Environmental Quality Act (CEQA), National Environmental Policy Act (NEPA), and any other environmental requirements including historical, cultural, etc. processes. Deliverable: Environmental evaluation report and recommendation (Initial Study and/or Environmental Assessment) 6. Field Work The Consultant will perform onsite visual inspection of each proposed BMP project location and its contributing watershed and will verify the tributary drainage areas for each site, as well as the existing storm drain locations and type, catch basins, open channels, etc. and prepare AutoCAD and GIS documentation. The Group will provide previous analysis. Deliverable: AutoCAD and GIS maps and documentation showing tributary drainage areas and existing storm drain structures 7. Topographic and Seismic Survey The Consultant will acquire/prepare topographic mapping, surface, earthquake fault, and utility survey and existing storm drain plans and infrastructure plans from the County and City sources and determine the watersheds that contribute to each regional BMPs including hydrological and hydraulic analyses. Deliverable:A topographic map in AutoCAD format 8. Hydrology The Consultant will conduct a hydrology study for each of the proposed project areas.The Consultant will do a detailed hydrology study and examine existing infrastructure for flow direction to determine precise tributary boundaries. This is to include calculation of: • 85th percentile storm volume for each tributary and project • Stormwater capture potential per year based on the average storm year Deliverable: Hydrology Study 9. Community and Stakeholder Outreach The Consultant will propose community and stakeholder outreach strategy for each of the proposed project areas.With the approval of the WMG Group,the Consultant will conduct as-needed outreach and propose alternatives to the project scope, limits, and elements. It is anticipated that the green streets project for the County Unincorporated Area tributary to Rio Hondo (via Eaton Wash) will require outreach to the local residents. Stakeholders may include, but not limited to: LACFCD, U.S. Army Corp of Engineers, etc. Deliverables: 1. Community and Stakeholder Outreach Strategy 2. Outreach Activities including staffing and developing outreach materials 3. Submittal to LACFCD for scope review (EPIC-LA) 4. Outreach Report, including any changes and alternatives in projects scopes to address issues 10. Develop Stormwater Capture Capacity and Conduct Water Quality Analysis The Consultant will determine the maximum potential drainage area that could be captured by the Project. It should be assumed that prior to analysis;guidance from the Project Manager will be given on available project footprint. The Consultant will develop the following stormwater capture capacity options: Option 1. BMP size that will achieve water quality standards for the Project tributary area should flow through treatment BMP be selected. Option 2. BMP size that is most cost-effective for the Project tributary area. Option 3. BMP size that will capture the 85th percentile, 24-hour storm volume. Option 4. BMP size that will provide the largest amount of stormwater capture to allow for greater flood protection downstream. Option 5. Any other BMP size that the Consultant determines will best achieve multi- benefits, including but not limited to addressing stormwater quality and providing local flood relief. The Consultant will also develop recommendations for the BMP location and type as well as the location,type, and size of pre-treatment systems and diversion structures for each option. The Consultant will obtain and review all necessary data to complete the task. If the available information is incomplete, the Consultant will perform all tasks necessary to develop the design capacity options. The Consultant must follow Los Angeles County Public Works' standards for conducting hydrologic and hydraulic analyses. The 2006 Hydrology Manual can be found at: https://dpw.lacounty.gov/wrd/publication/engineering/2006 Hydrology Manual/2006%20H ydrolog %20Manual-Divided.pdf The Consultant will use the Watershed Management Modeling System (WMMS), and WMMS 2.0 when it is available,to support the design of stormwater capture capacity. The Consultant will evaluate available water quality data most relevant to the Project site and follow the Regional Board's guidelines for conducting water quality modeling for the Project, including model calibration. Model runs to include amounts of pollutant removed per 85th percentile storm and in total during an average storm year. WMMS: http://dpw.lacounty.gov/wmd/wmms/,WMMS input and output files for the project based on the concept developed in the WMP, Regional Board's Guidelines for Conducting Reasonable Assurance Analysis in a Watershed Management Program, Including an Enhanced Watershed Management Program, dated March 25, 2014, and monitoring data from the Rio Hondo/San Gabriel River Water Quality Group. Deliverable: Stormwater Capture Capacity Options Report and WMMS and WMS input and output files 11. GIS Maps The Consultant will prepare a GIS map for each project to identify the proposed regional BMP locations in an exhibit along with jurisdictional boundaries; prepare aerial mapping of where the diversion structures would be located, how and where will the conveyance (storm drain) system for the water quality flows be located and determine the percentage from each jurisdiction that is tributary to the proposed BMP. Deliverable: GIS Maps 12. Water Conservation The Consultant will determine the potential annual groundwater recharge volume. Optional Task:The Consultant will also incorporate a stormwater reuse design if desired by the City or RH/SGR WQG members Deliverable: Water Conservation Analysis 13. Feasibility Report The Consultant will provide a Feasibility Report that includes all the elements of the previous tasks. Deliverable: Feasibility Report for each project SCOPE OF WORK— PHASE 3 Upon completion of Phase 2, the Rio Hondo/San Gabriel Water Quality Group shall obtain the approval of the Oversight Committee to proceed with Phase 3. The tasks for Phase 3, Tasks 14 thru 19, may or may not be performed for all projects.The Consultant shall not proceed with Phase 3 until they receive a written authorization to proceed. Upon authorization,the services to be performed in Phase 3 may occur in Fiscal Year 2020-21 by the Consultant and shall include, but not be limited to, the following items of work: 14. Permits The Consultant will analyze each proposed location with respect to land use, existing uses, wildlife habitat, LA County Flood Control Division and Army Corp of Engineers permits, Right- of-Way ownership, possible joint use with the parks, easement requirements, legal ramifications and joint agreements. Identify all potential permits and/or agreements that will need to be obtained or executed prior to construction of the each of the projects. The Consultant will also clarify the permit process to obtain an encroachment permission and related fees from other agencies such as Railroads, LADPW/LACFCD, Army Core of Engineers, Department of Fish and Wildlife, special districts and Cities prior to commencement of investigation at the site. Deliverable: Required permit(s) report 15. Project Cost&Schedule The Consultant will prepare a conceptual engineer's cost estimate and construction schedule for up to five regional projects and green streets based on the information obtained from the investigations included in this scope of work and prepare a project schedule utilizing MS Project (or equivalent) for each task in the scope of work and take into consideration the phased scope of work and the time needed for agencies to review and provide comments. Deliverable: Project schedule and cost 16. Safe Clean Water Program (SCWP)Scoring Criteria The Consultant will conduct preliminary score for each project based on the Safe Clean Water Program Scoring Criteria. The Consultant is to identify ways that the project can be enhanced to reach the next higher rant and provide a write-up. Deliverable: SCWP Scoring Criteria and identification of methods for higher ranking 17. Operation and Maintenance The Consultant will develop a draft operation and maintenance plan that can be updated upon completion of final design plans. The Operation and Maintenance Plan should include cost estimates and address vector control concerns. Deliverable: Operation and maintenance plan 18. Monitoring Plan (Optional) The Consultant will develop a baseline monitoring plan and a long-term post project monitoring plan to determine water quality improvements and water supply benefits. At the request of Project Manager, the plans may include habitat restoration monitoring. Deliverables: Baseline Monitoring Plan and Long-Term Post Project Monitoring Plan. 19. Final Deliverable Based on the findings from each task in the scope of work, submit a Preliminary Project Concept Report and 30% design plans for each project. The Report will be a compilation of all of the components above to present the overall concept of the project. See Attachment XX Deliverable: Final Deliverable CONSULTANT SELECTION A Project Review Committee will review and evaluate all proposals submitted.The Committee will evaluate all proposals received and may interview top ranked Consultants if it is deemed necessary. The Project Review Committee will make the selection of the Consultant for this work based on a combination of the following criteria: 1. Project Understanding Comprehension of the scope of work included in the project, awareness of the Permittee's needs, identification of the work elements, sequence of operations, project objectives, completeness in answering the Request for Proposal. 2. Project Team Identification of person in charge of the project, including qualifications,technical backgrounds and experience of all key personnel to be assigned to this project. 3. Experience Relevant technical experience and projects completed demonstrating the ability and capacity to perform the work included in this project. Experience with municipal government projects and familiarity with public contract bidding requirements are very desirable. 4. Budget and Schedules Ability to deliver required documents meeting the anticipated schedule for this project. Techniques used for controlling costs and attaining project objectives within time and budget constraints. Record of firm in accomplishing its work on schedule, within a budget and in providing realistic cost estimates. 5. Project Approach Originality and soundness of firm's approach to the project, including unique, innovative or cost saving methods. 6. Capabilities Staff and facilities available, location of offices, current workload, including commitment of staff to the project and technology applications. 7. Local Sensitivity Familiarity with the Permittees, drainage facilities, and the project vicinity. 8. Reputation Past clients, repeat business, stature in the industry, awards earned, etc. 9. Full Service Qualifications, technical backgrounds and experienced of sub-consultants, contractors, etc. used on this project. Discipline coordination, service from project beginning to completion. 10. Selection Criteria The City of Arcadia on behalf of the RH/SGRWQG will conduct a comprehensive,fair, and impartial evaluation of proposals received in response to this RFP. All proposals received will be reviewed and evaluated by a committee of qualified personnel. The name, information, or experience of the individual members will not be made available to any proposer. The Project Review Committee will first review and screen all proposals submitted, except for the cost proposals, according to the minimum qualifications set forth above.The following criteria will be used in reviewing and comparing the proposals and in determining the highest scoring bid: a. Qualifications, background and prior experience of the firm in the Service Area(s) being proposed, experience of the key staff assigned to oversee services provided, evaluation of size and scope of similar work performed and success on that work (40%). b. Responsiveness to the RFP, and quality and responsiveness of the proposal (10%) c. References including past performance of the Proposer (20%). d. Cost and fees to the RH/SGRWQG WMP group for handling matters. Cost is not the sole determining factor but will be taken into consideration. Proposer must offer services at a rate of the Proposer. If rates differ for different types or levels of service, or for different Service Areas,the Proposer should so state (30%). RIGHT TO REJECT ALL PROPOSALS The City of Arcadia reserves the right to accept or reject any or all proposals, negotiate modifications to proposals that it deems acceptable, to request and consider additional information from any proposer, and to waive minor irregularities and technical defects in this proposal process. The City reserves the right to seek new proposals when it determines that it is in the best interest to do so. No representation is made that any contract will be awarded pursuant to the Request for Proposal. The City will provide only the staff assistance and documentation specifically referred to herein and will not be responsible for any other cost or obligation that may be incurred by the respondent. All proposals submitted to the City shall become the property of the City. PROFESSIONAL SERVICES AGREEMENT The City of Arcadia's standard Professional Services Agreement template for Consulting Services is attached as Appendix A and will be used for this contract, which at a minimum will include the terms set forth in the Professional Services Agreement template.The information provided by the selected firm's proposal will serve as the basis for negotiation. Negotiations may then be undertaken with the review committee's second choice or ceased altogether. If an agreement is reached with the Consultant, a contract for the work will be prepared in final form, executed by the Consultant, accompanied by the appropriate certificates of insurance, together with the required endorsements, and returned to the City of Arcadia for approval and execution. PROPOSAL REQUIREMENTS The City of Arcadia reserves the right to award a contract for all or some of the tasks specified in the Scope of Work, and has therefore requested that all proposals include at minimum a breakdown of costs on a task by task basis. 1. Proposal Submittal Proposals are due by Tuesday, October 22, 2019 at 11:00 a.m. Please submit ten (10) copies and one (1) electronic copy of the technical proposal and two (2) copies of the sealed fee to: City of Arcadia Office of the City Clerk Attn: Vanessa Hevener, Environmental Services Officer 240 West Huntington Dr. P.O. BOX 60021 Arcadia, CA 91066-6021 Questions regarding this Request for Proposal or requests for additional background information may be directed by email to Ms. Vanessa Hevener at vhevener@arcadiaca.gov by October 10, 2019 no later than 5:00 p.m. 2. Proposal Format Proposals must include the information requested and comply with the requirements outlined in this Request for Proposal. Proposals should, at minimum, address the Scope of Work and should be formatted to include the following sections: a. Perception and Approach: Demonstrate an understanding of the Project and how the project will be approached including steps to ensure ultimate compliance with objectives of the MS4 NPDES Permit. b. Key Personnel: Qualifications with respect to this project, responsibilities to be assigned, amount of each individual's time to be allocated, locations where the work will be performed. c. Project Management: Provide examples that demonstrate capability in management of projects of this scope. Include a sample monthly report, procedure for monitoring progress, providing cost control,and to maintain the project on schedule. d. Fee Proposal: Submit two (2) copies in separate sealed envelopes, plainly labeled "Fee Proposal", including a not-to-exceed fee for all work to be completed. The fee summary should also include a cost and man-hour breakdown consistent with the requirements of the Scope of Work, and a project schedule that accounts for all tasks. 3. Cover Letter All proposals shall include a cover letter which states, at a minimum that the proposal shall remain valid for a period of not less than ninety(90) days from the date of submittal. 4. Required Information Proposal must include the minimum information as outlined below: a. Legal name of firm, address, and telephone number b. Firm's Tax Identification Number c. Year firm was established as currently being operated d. Identification of the Project Manager assigned to this project e. Name, address, and telephone number of the person to whom correspondence should be directed f. List of subconsultants, if any, who will be part of the project team including their specific areas of responsibility g. General description of the structure of the organization (i.e., whether an individual, partnership, corporation,joint venture, etc.) h. A minimum of four references that the City of Arcadia may contact concerning the firm's performance on similar projects i. Representative listing of contracts that are of a similar nature to the required work for which the firm has been engaged, paying particular attention to those of the last four years in the Southern California/Los Angeles and Orange County areas for consulting engineering services. COST OF PROPOSAL PREPARATION Any party responding to this RFP shall do so at their own risk and cost. The City of Arcadia shall not, under any circumstances, be liable for any pre-contractual expenses incurred by any Proposer who elects to submit a proposal in response to this RFP or by any Proposer that is selected. Pre-contractual expenses are defined as expenses incurred by Proposers and the selected Proposer, if any, in: • Preparing a Proposal and related information in response to this RFP; • Submitting a Proposal to the City; • Negotiations with the RH/SGRWQG WMP group on any matter related to this RFP; • Costs associated with interviews, meetings, travel or presentations; or • Any and all other expenses incurred by a Proposer prior to the date of award, if any,of an agreement, and formal notice to proceed. GENERAL REQUIREMENTS Minimum Qualifications The firm and any sub-consultants must be legally qualified to practice the work requested in the State of California. Sub-consultants performing more than 5% of the work must be approved by the City of Arcadia. Previous professional work, demonstrated capabilities and experience of the project team, and Project Manager on similar projects, must be documented and will be a heavily weighted factor in the selection process. The Consultant's commitment of staff to the project will also be a heavily weighted factor in the selection process. Only staff who will, in fact, commit a substantial percentage of their time to the work should be set forth in any organization charts, resumes, or interviews. A Project Manager is to be designated by name and may not be changed without prior written approval by the City of Arcadia. Significant deviations from proposed staff may result in a reduction of the Consultant's fee or termination of the contract. Additionally, the City reserves the right to have the Consultant remove and replace the Project Manager or any project staff member or sub- consultant from the project for cause. Quality of Work The Consultant agrees to deliver quality products and services that meet or exceed generally accepted industry standards (or best practices) and those, which have been expressly stated herein as requirements. Products which fail to meet these standards will not be accepted. The Consultant will be wholly responsible for correcting any deficiency at no additional cost to the City. The Consultant's proposal shall include a detailed description of quality assurance procedures that are to be used on the project. Insurance The Consultant shall maintain commercial general liability insurance and professional liability (errors and omissions) insurance in the aggregate limit of$1,000,000 each during the term of the proposed Consultant (see Appendix B). Prior to the start of work, the Consultant shall furnish a Certificate of Insurance in duplicate, naming the Cities of Arcadia, Bradbury, Duarte, Monrovia, Sierra Madre, and County of Los Angeles, its officers, agents and employees as additional insured under the policy. Consultant shall also furnish proof of workers'compensation liability insurance. Business License Requirement The successful firm shall purchase a City of Arcadia Business License prior to commencing work. Non-disclosure of Information Any consultant hired to perform work under this project, shall take reasonable and prudent measures to safeguard all information used in the development of the work products and all draft and final work products including the information in this RFP. The Consultant shall not disclose this information to any party,or use the project data or information on any other project,without the express consent of the City of Arcadia or as required by Federal law. The City shall ensure that the same is required of any sub-consultants working under the Consultant. CITY OF ARCADIA ARCADIA, CALIFORNIA ADDENDUM NUMBER 1 To all prospective proposers for the Feasibility Study for the Multi-Benefit Stormwater Project Concept Reports The following information is provided to all proposers in accordance to the Request for Proposals: 1. The original proposal due date of Tuesday, October 22, 2019 has been extended. The NEW proposal due date is: TUESDAY, NOVEMBER 12, 2019 at 11:00 AM Proposals must be received at the Office of the City Clerk, located at 240 W. Huntington Drive, Arcadia, CA 91007, no later than the above extended date and time. Proposals received after this time will be returned unopened. 2. The NEW deadline to submit questions on proposal requirements is Thursday, October 31, 2019 by 5:00 PM. Date: October 16, 2019 BY ORDER OF THE CITY OF ARCADIA re- 7A' YB Vanessa Hevener Environmental Services Officer CITY OF ARCADIA ARCADIA, CALIFORNIA ADDENDUM NUMBER 2 To all prospective proposers for the Feasibility Study for the Multi-Benefit Stormwater Project Concept Reports The following information is provided to all proposers in accordance to the Request for Proposals that are due on Tuesday, November 12, 2019 at 11:00 AM at the Office of the City Clerk, located at 240 W. Huntington Drive, Arcadia, CA 91007: 1. Green Streets Investigations RHSGR Technical Memo — Location 3 2. Green Streets Investigations RHSGR Technical Memo — Location 4 3. Green Streets Investigations RHSGR Technical Memo — Location 5 Date: October 29, 2019 BY ORDER OF THE CITY OF ARCADIA By: Vanessa Hevener Environmental Services Officer GREEN STREETS INVESTIGATIONS RIO HONDO/SAN GABRIEL RIVER TECHNICAL MEMO — LOCATION 3 PROJECT SCOPE • Location: Unincorporated Community of Azusa (TG pages 599-B2, C2) • Tributary area: Total area = 41.6 acres, Pipe Flow = 0 acres, Surface Flow = 41.6 acres • San Gabriel River Watershed RAA Volume: 4.84 acre-feet • Area Jurisdiction — 97.2% within County & 2.8% within the City of Glendora Stormwater Quality Division requested Design Division (DES) to conduct a green street feasibility study for various locations in the Rio Hondo/San Gabriel River watershed. These locations were submitted to Stormwater Engineering Division (SWED) to prepare tributary area maps showing the drainage area for each location. Based on the tributary area for Location 3 provided by SWED (see Attachment 3), DES conducted a field reconnaissance to identify potential locations for Low Impact Development (LID) features (see Attachment 1 for location maps). The following requests were then submitted to the following support divisions to provide necessary information to assess the feasibility of each location. Division Information Requested Date Requested Attachment Construction Preliminary Utility Search June 22, 2017 N/A* Geotechnical & Preliminary Environmental June 20, 2017 5 Materials Engineering Site Screening (PESS) (GMED) Cone Penetration Test August 1, 2017 4 (CPT) *Preliminary Utility Search responses are on file and available upon request. FEASIBILITY REVIEW Review Categories Category Description Subarea References the subarea number in the hydrology map prepared by SWED (see Attachment 3). Subareas are sorted generally from upstream to downstream storm drain flow. ID Number provided to reference individual LID features within one catchment area. PESS 'X' indicates potential presence of contaminated soils in this location. Confirmation of this contamination will require the depth range of the proposed LID and additional file reviews from GMED. Utility Search 'X' indicates potential conflict with one or more utilities. Due to the margin of error associated with aerial, property line, and utility information, the exact locations of utilities need to be confirmed through potholing. CPT 'X' indicates this location may not be suitable for infiltration due to a soil profile consisting primarily of clayey material or a shallow groundwater table. Further subsurface investigation by GMED is warranted to completely exclude the location from onsite infiltration. Biofiltration may still be possible. Feasibility Tier Provides a ranking of proposed locations based on all review categories. No potential issues were found at Tier 1 locations and should be considered priority for further development. Tier 2 locations may have a combination of potential utility and infiltration issues. Tier 3 locations have potential soil contamination and may have additional issues. These are recommended as a last priority. Review Results The below table summarizes DES's findings for the potential LID locations based on a concept level investigation. Further investigation is required during the Project Design Concept Phase to confirm the impact of the issues on the proposed scope of work. See Attachment 2 for schematic diagrams of the proposed features. Potential Issues Subarea V85th Cumulative ID PESS Utility CPT Feasibility (ac-ft) V85th (ac-ft) Search Tier 3-1 1 3-2 1 3-3 1 1A 0.861 0.861 3-4 1 3-5 1 3-6 1 3-7 1 3-8 1 • 3A 0.755 1.616 3-9 1 3-10 1 Technical Memo Rio Hondo/San Gabriel River Green Streets Investigations—Location 3 ATTACHMENT I LOCATION MAPS Design Division PUBLIC WORKS ns I S1 / �a O G�'p PAYSON S7 J a < O O 1 > ...\ .. . T .l AlV a (WEATHER RD / I — I yl GJ j " o LA%FORD RD < ' i 2 a O m I I i• _ W000CROFT ST _ 3A ❑ ' I i 1 `..1 W I 9Y11 • ^. r: -- -- — ARROW HIGHWAY j LEGEND COUNTY OF[ ANGELES sle.a•eolRotyo.R. [ L "75 -1 1 1- r. l f j 2 SUBAREA RIMER / I ANDEL" .. .r 6.�.,x Nowa I LN flo.DIRECT. GREEN STREET INVESTIGATIONS :::.:t. -EXISTING STORY DRAIN RIO HONDO SAN GABR I EL e IDEATION s LOCATION 3 KEY MAP I.c• IR. Isar maw .•••••• ••..••• t �"❑ In WOODCROFT ST M o a Z1 Q > m J .1 CC AAAA.. 4 RFD--/ 0) i Q RiR-/ W U 1i j a _---_`f ARROW HIGHWav ° , ARROW HIGHWAY P. COUNTY OF L OS"6E1 ES C/TY A�COP/NA LEGEND jcowry o.Los...cuss oc...T.s..or Rum.lc wows PROPOSED LID FEMME -w—FLOW DIRECTIDN RoiwE Q. PROPOSED LID FurCRE ID —EXISTING STORY DRAIN GREEN STREET INVESTIGATIONS RIO HONDO SAN GABRIEL SUBAREA BOUNCART LOCAT ION 3 SUBAREA rLIBER LOCATION MAP j IR I.c. IA. I I.sE.: rmm AAA.. NA.... 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I 'vs• PERFORATED />i 0 0 0• %��i CONCRETE \//% I T I !/�\\ DRY WELL /vyiv!%�y,,I = 0 0 0 � . li�� \\/\\ I y\\ \y/\�/\ 0 0 0 I /� AGGREGATE /vv/ /v`' Iy//v ��/v/ivy/i�w�,I 0 0 0 ;i!/ �/i\//i\//ix 1 0 0 0 = 1� � NATIVE SOIL i2,/��//iv///� I 0 0 0 -� ��w (DRY WELL TO EXTEND ��/wv//��/% I 7 • I �/� TO WHERE SOILS ARE viivviiAviAv;' j 0 0 0 _ I ;�wvv��� PERMEABLE) %\\%\\%\\i \\%\\\i��, /vv/vv .- ( _ vvvvvy SECTION VIEW \/\/\/ /, I ± �...- ,�/ice\\i\; /v/iv/ivv -,w/iviwivviv/iv/yivviviv/ivy!/ DRY WELL SUBTERRANEAN TYPE LID Technical Memo Rio Hondo/San Gabriel River Green Streets Investigations—Location 3 ATTACHMENT I I I HYDROLOGY Design Division 6-17 PUBUC ORKS' os '' 85th-percentile 85th-percentile 11,4%` Total Area Total Q85th Total Volume Subarea Subarea Qs5th Subarea . +"��''+11 rt, " Location (acres) (cfs) (ac-ft) (acres) (cfs) Volume(ac-ft) ,, 1A 20. 0. ... ' -," 3A 41.6030 5.032.69 1.616861 21.320.3 2. 62.69 0.7550.861 Ito. �" moi _, . 1: ti ,a. ,t; yy - t y J ,v �_ • a 1. c.z - Z Q w nryye L -� l - k z �� Q 03 -. le +.-.. ir AA "(t S J :AXEORD.• . j__ por:; n LEGEND k fib ' 3A 1A Subarea114.- ::*41i iL._ Collection Point N IA Subarea Number , , f. _; Technical Memo Rio Hondo/San Gabriel River Green Streets Investigations—Location 3 ATTACHMENT IV CONE PENETRATION TEST RESULTS Design Division PUBLIC WORKS ns Ts'' cL TT?''' _ PAYSON ST Js R NEw•.,.iR'N 1 1 WEATHER RD s a .. a 1 o 1AXFORD RD a fs m Ik m 0 I i A WOODCROFT ST A' } a w L3.1 i z1 A A iLEGEND COUNTY v.m..uus:.encs a INNS IC UP Pru GREEN STREET INVESTIGATI PROPOSED L to RIO HONDO SAN GABRIEL CPT location AREA 3 -LOCATION 3 X I —...1 X'Cross Section KEY MAP CROSS-SECTION A-A'i FRONTAGE ROAD NEAR ARROW HIGHWAY 0 0 FOLD Dln.Eno FOLD N45 F S4S W Nu,n�. A HAND HAND 600 AUGER L,3-2 L3-3 AUGER !{ to s' s' L3�1 600 590 .7'7% -'-- - - r.. -- ?-•' x r.:� _..�� _- 7,7:_ � - ,g L !� -+-590 580 9W Slr' ___. 'P% .1./(1:)'4p,•.;.::::';'....•'•!...:•:::',..•:::-..:::)''' w SL^. ,T,' ''i� :✓i *-• '•i� -+ 580 570 %i�� G :' fi I F% :-> ; 570 �� 560 °/./r _ 1 I 1 l - 560 550 . r JII]OD111P,: L} • y .- 550 540 CU —540 w 530 .'r*—530 540 '�sk,• 10 500 • LEGEND. :Sd� .>1GA .•.—. , .•• 500 New:Hi.ro.le npn orrenawm«m.e nem S•I.mro ' Cone Penetration Teq(CPT) M L I I I I Sit .a.ra zor.r.ren m.9.rowm rMa O eera„gre ....s rM1el nlarorlc M1pn arountlw•1•r MvIs•r• Ground Sudece SM I Silty Sand a••r•.nar zoo'. Potential I'I�I`I Percaptlon Zone `w S F V Igeded or Poodyyraded Send Defied coNact Cont.))urroer�insae.rr COUNTY OF LOS ANGELES DEPARTMENT OF PUBLIC WORKS GEOTECNNGLAIO MATERLLLS ENOB€ERNG dN51t'M CROSS SECTION A-A' Rio Hondo Sod Upper Sen Gabriel Feaeibiiry Aoetysi ootnn 3 Fronlege Rood near Artow Mighway.Covina.CA naM fEniOte 1 aaaa0 er VIe.1 1 8u4 at srexn I OGDRE i I ...I.a I I Glenn/01 a i Azusa ,; ;.. ..!,It,S7= i E 5th.:• Strc.pp^'r rWm;I.«Ab: 4337A 3 rooell .�� raae� • HOh ?zlxa-,t • - ,yf S.rgel t t_v = = isna e.,.IF.1 4.: Mph i -fb:n La.:r,n A:e F ,11. 4288A CItru so 348D ,a„; sk. �� t�.as t::F: •;;C.Let et F,.IieU.Fr St a �� 4,279AD v SChooi a Wwr h�,K�.Part Scheel Le* ® ' D�1,� ,g S' 4319AH 7 ,wy en Was<<' .:..�.. _Vincent....E Arrow Hwy w Arrow —4349B _'��(��QR Hgh C.4.5.. • F.vv Suhod MOWN 4.e 4E• 1 Oar Ar? V vv”' a a' f v 'r '••I /1 u z 110 al s P;•,i W'.. g. -- a n Cypteu En 1.14 Miles _ 1 0 0.57 1.14 Miles 1:36,112 O This map is a user generated stab,output Garr n..I..t.....,,t,r.o,,l,,,.y site and WGS 1984 Web_Mercator_Auxiliary_Sphere is for reference only.Data layers that appear on this map mayor may not be accurate,current,or otherwise reliable. ©Latitude Geographies Group Ltd. THIS MAP IS NOT TO BE USED FOR NAVIGATION Geocortex Essentials LEGEND SGroundwater Monitoring Well LACDPW SWED Database Location 3 Location 4 GEOLOGY AND SOILS LOS ANGELES COUNTY DEPARTMENT OF PUBLIC WORKS co *0 o GEOTECHNICAL AND MATERIALS ENGINEERING DIVISION m O N ; ��� O O i I °z IIII_ ''I I � ,,, c, o bIliI,� III- iP o Groundwater Monitoring Well Locations 2 ) s l r o Locations 3 and 4 r 1 I t Citrus, CA GEOLOGY AND SOILS Date: May 2018 1 Drafted by: VM Scale: As Shown FIGURE 1 Rio Hondo Groundwater Elevation of LACSW Monitoring Wells Monitoring Wells West of Location 3 and 4 700 600 Wen 43I9Ax Elevation 500 Wen 4210SA Elevation Well 4279D Elevation 400 --Well 4319AH 300 . ___ . Well 4288A 200 Well 4279D ✓• 100 Q 0 O 1928 1942 1957 1971 1986 2001 2015 > Year W °' Monitoring Wells East of Location 3 and 4 E- 800 750 Well 434RD Elevation .d .._..._—_...�. Well 4349B Elevation g 700 Well 4337C Elevation 650 600 Well 4337C ...�- , Well 4349B 550 —Well4348D 500 450 400 1928 1942 1957 1971 1986 2001 2015 Year Technical Memo Rio Hondo/San Gabriel River Green Streets Investigations—Location 3 ATTACHMENT V PRELIMINARY ENVIRONMENTAL SITE SCREENING RESULTS Design Division Pu WORKS December 19, 2017 TO: Hector Bordas Design Division Attention Josafat Flores ii FROM: Greg Kelley DAI 1"3k Geotechnical and Materials Engineering Division PRELIMINARY ENVIRONMENTAL SITE SCREENING GREEN STREET INVESTIGATIONS RIO HONDO/SAN GABRIEL RIVERS AREA 3 LOCATION 3, UNINCORPORATED COVINA AREA PROJECT ID DES0002991 (PROJECT NO. F21816I26G) In response to your request dated June 20, 2017, and your September 25, 2017, e-mail, clarifying the project limits, a Preliminary Environmental Site Screening (PESS) was completed for the subject project. It is our understanding that the project scope is for the siting of various Low Impact Development features, including bioswales and drywells. Our PESS included a site reconnaissance, review of aerial photographs and topographic maps, and searches of publicly available regulatory databases. Based on available information, the site conditions observed, and the proposed scope of work, the results of our screening did not identify environmental conditions affecting the subject project. At this time, no further assessment is warranted. Note that our preliminary screening of the site conditions does not preclude that contamination may exist in subsurface soils at the site in areas that have not been identified as environmental concerns because: (1 ) contamination releases may not have been reported to the authorities, (2) contamination releases were not known to have occurred, or (3) data gaps exist in the referenced databases, historical photographs, or maps. There is also the possibility that site contamination may occur subsequent to our review. Additionally, if impacted soils are encountered during construction, the project contractor should implement proper health and safety measures and appropriate contaminated material handling and disposal procedures. This PESS is generally considered applicable for a period of 180 days from the date of this memorandum and is recommended to be updated thereafter as needed. If you have any questions regarding this matter, please contact Phuong Schmit-Kallas or Gregory Sena at Extension 4923. To provide feedback on our services please access http://dpw.Iacounty.gov/qo/gmedsurvey to complete a Customer Service Survey. 4./ ,,SK:GS:kw p tgrnepub,secretarial'geoinv!pess,201 Thondo-gabriel area 3 location 3.docx cc: Construction (Enriquez) Design Division (Davis, Fur", Wu) GREEN STREETS INVESTIGATIONS RIO HONDO/SAN GABRIEL RIVER TECHNICAL MEMO — LOCATION 4 PROJECT SCOPE • Location: Unincorporated Community of Azusa (TG pages 569-A7, B7 599-A1, A2, B1) • Tributary area: Total area = 169 acres, Pipe Flow = 169 acres, Surface Flow = 0 acres • San Gabriel River Watershed RAA Volume: 4.84 acre-feet • Area Jurisdiction — 98.5% within County & 1.5% within the City of Azusa Stormwater Quality Division requested Design Division (DES) to conduct a green street feasibility study for various locations in the Rio Hondo/San Gabriel River watershed. These locations were submitted to Stormwater Engineering Division (SWED) to prepare tributary area maps showing the drainage area for each location. Based on the tributary area for Location 4 provided by SWED (see Attachment 3), DES conducted a field reconnaissance to identify potential locations for Low Impact Development (LID) features (see Attachment 1 for location maps). The following requests were then submitted to the following support divisions to provide necessary information to assess the feasibility of each location. Division Information Requested Date Requested Attachment Construction Preliminary Utility Search June 17, 2017 N/A* Geotechnical & Preliminary Environmental June 20, 2017 5 Materials Engineering Site Screening (PESS) (GMED) Cone Penetration Test August 1, 2017 4 (CPT) *Preliminary Utility Search responses are on file and available upon request. FEASIBILITY REVIEW Review Categories Category Description Subarea References the subarea number in the hydrology map prepared by SWED (see Attachment 3). Subareas are sorted generally from upstream to downstream storm drain flow. ID Number provided to reference individual LID features within one catchment area. PESS 'X' indicates potential presence of contaminated soils in this location. Confirmation of this contamination will require the depth range of the proposed LID and additional file reviews from GMED. Utility Search 'X' indicates potential conflict with one or more utilities. Due to the margin of error associated with aerial, property line, and utility information, the exact locations of utilities need to be confirmed through potholing. CPT 'X' indicates this location may not be suitable for infiltration due to a soil profile consisting primarily of clayey material or a shallow CPT groundwater table. Further subsurface investigation by GMED is warranted to completely exclude the location from onsite infiltration. Biofiltration may still be possible. Feasibility Tier Provides a ranking of proposed locations based on all review categories. No potential issues were found at Tier 1 locations and should be considered priority for further development. Tier 2 locations may have a combination of potential utility and infiltration issues. Tier 3 locations have potential soil contamination and may have additional issues. These are recommended as a last priority. Review Results The below table summarizes DES's findings for the potential LID locations based on a concept level investigation. Further investigation is required during the Project Design Concept Phase to confirm the impact of the issues on the proposed scope of work. See Attachment 2 for schematic diagrams of the proposed features. Potential Issues Subarea V85th Cumulative ID PESS Utility CPT Feasibility (ac-ft) V85th (ac-ft) Search Tier 1A 0.857 0.857 4-13 x 2 3A 1.01 1.867 4-11 1 5A 1.144 3.011 4-7 1 6B 0.416 0.416 4-15 x 2 8B 0.167 0.583 4-14 x 2 10A 0.506 4.1 4-6 1 4-1 1 4-2 1 4-3 1 4-4 1 12A 1 .264 5.364 4-5 x 2 4-8 1 4-9 1 4-10 1 4-12 1 Technical Memo Rio Hondo/San Gabriel River Green Streets Investigations—Location 4 ATTACHMENT I LOCATION MAPS Design Division PUBuC WORKS' \iin"L'vji 'IQ D ❑ f GALATEA ST �\. / I� 1 I. ; CITRUS EDGE ST I 0 ARMSTEAI IT m I — in FONDALE ST ¢ yRI w w L = I � � I vJ • BELLEFONT DR Ile fa V,Q VI' 1 �'� 1 -�� NEARFIE D ST z a SA I > L2\q ' o \ SIV i I p GA ILLARD ST L. i 0 1 I 1 u i ^I GHENT SYJ? .'--.11_. SYT5 /5 V i rr�� 1 6E1 CEO •¢EN DR• 1oX� I GL ADS TONE ST yh L y i MI in : 1 i 14 CENTER MIDDLE SCHOOL 1 I I iLEGEND —'----1 PROPOSED L10 )I Ilt SUBAREA BOUNDARY I ,. .�..«i. WOMEN,OF : IR SUBAREA NAMED ❑ GREEN STREETINVESTIGATION--P.O.DIRECTION D I RIO HDNDO SAN GABRIEL EXISTING STORM DRAIN LLOCATION 4 LOCATION 4 KEY MAP 1 IPc. IRm ION", , s a.. ....... I SP P/11—i IMO—, GAILLARD ST ta N a 0 H W La W = = V) 0 La LJ N LLJ -- GHENT ST — - — — iiJ = AAAA O U I- Q iE a ❑ w iI h w GLADSTONE ST _ RnJ _ ___ .______ _ ___. yQ ,. : , > Iej GLADSTONE ST j — VV LEGEND PROPOSED LID FEAT WE + FUN DIRECT. Runrr a LM MOMS OfPMT,100 n MAL IC alas - E O PROPOSED LID FEATURE ID —EXISTING STORY DRAIN GREEN STREET INVESTIGATIONS R10 HONDO SAN GABRIEL SUBAREA BOMDART LOCATION 4 IA SUBAREA KY. LOCATION MAP IFA IDs IX.ur X D.a Technical Memo Rio Hondo/San Gabriel River Green Streets Investigations—Location 4 ATTACHMENT II LID FEATURE TYPICAL SECTIONS Design Division //+ likis /tel Ail »\''. SWALE WI KEYED HEADER OPTIONAL DRY STREAM BED TYP CURB ADJACENT �� I / PRO '7 r/r% 4,14W/4074444i2 rtMil SC0� �� �Kik `�, >� ROAD \ \, , ._._______ _ _,,..„,_#�► • .se 4•4100,4/\\/�\! INLET \ O�OI \/\ \\\\/\\ .//' I I ,‹ -\\,..• :\��/\\.��,\, \ \�/. 9'-10" MIN SECTION VIEW- AREAS WITHOUT SIDEWALKS AND NO PARKING SIDEWALK SWALE WI OPTIONAL DRY STREAM BED TYP CURB ADJACENT ���`!�/ �' 1 G : PROPERTY \ \ \ . � �( &AL.l t'_I, ROAD ��\\�\ice\iii\i� .014` ,4: , 1/4���i��II�1, /�/i\/i\/i\//\/ I I I*ipsoI I I I Ijp I I I 1404' I�0.747474����\� INLET 13' MIN / SECTION VIEW - AREAS WITH SIDEWALKS BUT NO PARKING SWALE WI SIDEWALK OPTIONAL DRY STREAM BED STEP OUT ADJACENT \� j -�� ' J �j \ �j STRIP PROPERTY i• /\�I// ',S ) " . . \ \ \ \ \ • terI IIIIIQII 21616 � rr / /.0 0�0%�0�0*�'0� ,I.. ; r��►�►IO�d'OeOI IpI�►I�►I�►I ori i. INLET �rrirrirri\rri'�ir �iri�irir�ir/irr / r /irii !r r\!i!\\ri 14'-6" MIN / SECTION VIEW- AREAS WITH SIDEWALKS AND PARKING SLOPED BIO-SWALE (RAIN GARDEN ) SURFACE TYPE LID 4" HIGH CURB REQUIRED FOR ADA, W/ CURB CUTS SWALE TO ALLOW RUNOFF INTO SWALE SIDEWALK '•: \Y/, :•.- . ). k, c/ , ",.:..' 1 . A�4 , TYP 8" CURB ADJACENT 4vvr 00a ; riti PROPERTY I `/\` \ \t .: 1 / / / //- ./,\/ ;0i, 4m. ,.: ROAD �, ' �••••••••••0 0,4�����./�//\ INLET . I Mt/SKI\ \ \\\j�// /,� 7'-6" MIN / SECTION VIEW— AREAS WITH NO PARKING 4" HIGH CURB REQUIRED FOR ADA, W/ CURB CUTS SWALE TO ALLOW RUNOFF INTO SWALE SIDEWALK --\ STEP OUT \\// I STRIP ADJACENT A',.,, '\k/: + .PROPERTY . : '` � � ROAD \��A/AA�VA/�� .----/— , , > i 7711 ' \ \ v'' AAA _ �� itap I II , .. �� ; ,. '�10�I�.I*�I��. 7 ' ///,/ INLET 9'-6" MIN SECTION VIEW— AREAS WITH PARKING PLANTER BOX BIO-SWALE (RAIN GARDEN ) SURFACE TYPE LID CONCRETE EDGE PAVERS RESTRAINT TYP CURB BEDDING SAND t\4 ROAD Via na WS BM,-‘.-tre.,plieg4 vi*via v\ \/\ z. '...,;,11114 /�\\\//� ,[411 ���j�/\\/jamj�� /j//i. \/\ RESERVOIR OPTIONAL AGGREGATES 4' MIN SIDEWALK DRAIN PIPE SECTION VIEW- PERMEABLE PAVERS - SIDEWALK PCC EDGE RESTRAINT CONCRETE PAVERS TYP CURB DRIVING BEDDING -\ SAND LANE • rs �f'£wi` `>`-li .a'�s ����»J jy` i i�.+rR"�'i I I v r I III I HI , .-�- ..�• ::��=�.��. -III--III -1 I I 11 :=111---=111-t1 I- 11= I I=III III =1 III , III i11i11III�11ii;111I 1II1 1-IiI I-7111=11171 RESERVOIR OPTIONAL AGGREGATES DRAIN PIPE 8' MIN PARKING LANE / SECTION VIEW- PERMEABLE PAVERS - ROADWAY PARKING LANE PERMEABLE PAVERS (PAVING) SURFACE TYPE LID PERMEABLE CONCRETE TYP CURB ROAD r� {1././„.�r.rr'A A'''' i‘e/1<e �j/j/j��\/i y-y ! ! Vii! CURB INLET - STRUCTURE ` _ W/ SCREENED / CURB CUT STEP OUT STRIP, *. D.G. OR OTHER INLET PIPE PERMEABLE PAVING / W/ SCREEN 4c\, • #######.1••••• ••••••••••••••••• **I ,/,„/;/;/- i, ,<„,„i//i��i��i�/i\�i�i��i�A/v— \ \\j\\j\j\\j\\j\\j\\j\\j\\j\\j\ \\j\\j\\j\\j\\j�\ //\\ LONGITUDINAL SECTION VIEW PREFABRICATED RIGID, OPEN GRID, STORAGE MODULES WRAPPED IN PERMEABLE GEOTEXTILE FABRIC STEP OUT STRIP, 7- D.G. OR OTHER PERMEABLE PAVING TYP CURB ROAD CROSS SECTION VIEW PREFABRICATED RIGID, OPEN GRID, STORAGE MODULES WRAPPED IN PERMEABLE GEOTEXTILE FABRIC CURBSIDE INFILTRATION UNITS SURFACE TYPE LID GRATED INLET EI�. SKIMMER BOX M EN=�MMENE=MEQ=\ MIIIINIMMI=M1=MMS=MIIMII=MIN\ CONCRETE BORDER /4 ==•=1•1======■.Mm =MM= R- I==SIM=SIM=MINIIIM==IIMMIl====1: INIIIIM=MIIM======SMI==11EMMIN=M1 MIIIIIIIMMIMIM=1====1111M=MMS===MIR 111M11111=111M=MIIMIN====1111E=M11111111•11===111 II P E RM EAB L E PAVE R SIM=MMEli=======MOMMEN==ENNIM=M1 OVER INFILTRATION '1���==MEQ===OM1===i 1•==1. STORAGE GALLERY =======SOMME========•it" M===moi m•=�1•�==1-7��==/ ____L_1_______El�����.,. \1=11111==M111111111=====l1111=11i==M1111=: ==���====�WAr===r/ TY P CURB mm���������������r. AND GUTTER" ���������������6�:`.. =SON====== ==r- =MI��======MO! OBSERVATION 71=MIIMMI���!: MANHOLE FINISH MANHOLE --\ COVER GRADE COVER jj/ jj• � >/�jj j \j\�j\�j\�j\�i/// /� /�/ > / = \\jj\\ \/i � � �\i\\ii \ �i � �i \ \ i %mo% ir ii _ : < r // //r \ ice / /.. / /r o ,vv \ 1PI[ i\ iOore .vvvi / ./ irN LET - FROM /\\ i\\i\ /\ \\ •STORM DRAIN �\; \`�\\ �\ \\%,i1 ./\vOR OTHERrr\\// , . , 0 r\r/\r\. �\ \ \ \ \ \ \ I%�i\/� SOURCE \/ r'" � ii //\\i/i/iri .tet. :\ii\/i\ri: \/\\/\\/\\/\\/\\/\/ \ \\\\\ \\ I \\\\\ \\ \ \/ // r//r r//� //// r / 0 0 0 -<'. /// r/r i PRE-TREATMENT AND \%\��\il 4 U \\\ice\\O00SEDIMENT SETTLING CONNECTOR \\ri/�WELL PIPEo 0 or��/%\\i/\//i : : tg AA/AA/ ' PERFORATED v/\ \ \i CONCRETE i / < / DRY WELL \sir ' � r, \ \ • \\ \\\ 0 0 O j/\ AGGREGATE y//�////%:-: /r/< ri 0 0 O j\1/ /\ \r � . O 0 0 ,% \� �` \�� NATIVE SOIL /\r/\/r\//\r/\/ 0 0 O //\� //i//i//i//iriri_ 1 /rig (DRY WELL TO EXTEND \/\ \ \ \��, �� \� TO WHERE SOILS ARE \��\\fir\\i\\��\\�j - 0 0 0 %\\���, PERMEABLE) wiw�wv%vv%� ywv%�, SECTION VIEW ��\\�\\�\\�\\ ._� �\\r\\r\\/\\/ Vis) 1/i�i�r\� fi\\r/\\/r\\//\\'"' iy.% . •i \/\/ " '��/i\\//i\/,i\�i\i�,/<i\ri�i\i,i\ri�r��li DRY WELL \, \,, K\\\\/.\i;�\/�\;,\\..... • r SUBTERRANEAN TYPE LID Technical Memo Rio Hondo/San Gabriel River Green Streets Investigations—Location 4 ATTACHMENT I I I HYDROLOGY Design Division PUBLIC WORKS ♦I. - _.`" 85th-percentile 85th-percentile 1 Il� �: 4, R .A,P:-iii••>;.. i 4 A , Total Area Total Qssn Total Volume Subarea Subarea Qesm Subarea Volume -- - +q 1• _1•,;�,� t•` •� •14 ' Location (acres) (ds) (ac-ft) (acres) (As) (ac-rt) ., i ' IA 24.5 2.68 0.857 24.5 2.68 0.857 rt'{r �•. ,# -` 3A 53.4 5.83 1.867 28.9 3.16 1.010 .-.11"•C ,,, 1 i ' +! SA 86.0 9.18 3.011 32.6 3.58 1.144 " wF I- 68 11.5 1.30 0.416 11.5 1.30 ' 0.416 ' .�' 1 ° 88 16.3 2.0 0.583 4.8 0.53 0.167 ;, , IN ;; ‘6,..„ ..„.; VS ` e!" 6.,. «>41-+• OA., - •.. 100 115.9 12.48 4.100 13.6 1.58 ' 0.506 - ' 12A 151.0 16.26 5.364 35.1 3.95 1.264 ' 14A 1689 18.99 6.371 17.9 3.15 1.007 _ f '-` r 4 yl c••hi, ,-,„Re -7,.."...:, �+r- " s r'y ,1::: i iiN id ,4 ' .it �e 4 � e i�+ 030 lir i. J `E# ', m !♦ ,-.,..144%.,..a f4 r " „ 4 7,r ..a+ «a r'y _ r } `�.riw*. �+t , l a4a"�..y, l ' 3 41a 1.84**Nw4.�1. `' 'Y, i '0410041v,. tt t !+1 �t 4,...V...,+ 2 in. * LE. r, i.s�r., .4 ":t!'4 Y Ar'Y rN4 1+.: !' yr y3 ,,LL, t t #+ �-,•_•- - ,,,et. i} tt __ t 1 1•"'•.yl. ** - _ r,r T' :4,"-.. .• R .: ' 1_', . .. . , ` tr `. .6 " ` et ' x+ t y 4 + 41-_. t,.• _'7 r♦rei-YI: �. Y ,. 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RF-1.j,.a 1�•ii,t _ ate" . -.../i--4‘:..._ .a _4..--.-; �-.- ..,......0: •• ...- 1.....,„,„„__ • - ....4 -: - -a+,._+... _ ,r -71---4: :--4 -,,k -- +la.:..`. y c E 4`' Ik,44; '..-'a.....li^ k YY,. .�._._� �...•-./�a-. -...ter 's' • ,. + '4'.,,F"' `y4',i4g ',.._ �;.,,.�1 7L-aw_ t `aa> e"w.✓ r.- !* r, ; " Location 4 ,7.."` ►� �� - _ ,' _''S:7 -S - ,� �_,,�.�•'' ^•�, �.. .. f , Total Area 169 acres '�^ji _1t i .. ,' + tosi ' Total 85th-percentile Q:20cfs �, +-0*- - 1 ," ^r LEGEND r„_ Total 85th-percentile Volume:6.4 ac ft m�' `-*./4 -a-r • ,. P , - -" it'ar _,✓.: • Y-1, .- 4:,,, "' ,-f%•' 8 .:T"- _f %%" Q Project Outlet s`e�' � ,, .Ai . jar, ,, ' ",i ', •+" Subarea Boundary �t � .fl1000-. 1A Subarea Number .• ' 4' IWO. . - ' * - • Collection Point s ,;- Existing Drain _ PREPARED BY LOS ANGELES COUNTY , W.T. DEPARTMENT OF PUBLIC WORKS 1` DATE i-^i .. t i." _ a` •r`" •�"r`, 1 ,• I.r .. ,:• RHSGR GREEN STREETS } dam.o4 • e :,-_ 7117117 LOCATION4 • Y'- ' a' I ra9Ma+.''t:. C 200 400 800 Feet °.r SCALE '"` t __ • L' 1"=400' 85th-PERCENTILE DESIGN STORM Technical Memo Rio Hondo/San Gabriel River Green Streets Investigations—Location 4 ATTACHMENT IV CONE PENETRATION TEST RESULTS Design Division PUBLIC WORKS Vin. 4tat,V$' nutPx= to x ana, testi, tRia .ua..,, 4337A 'F4*;1 z - 1,1 Ertl rM119,MtAi'j ' ,f>f,.,1,,.�. 4348® 4288A_ Citrus ® ,,fi i • f 427 AD MP1.it, I ,Falv t ® , 4 ' 4319AH r t, . ; Vtptrni r .:.aw,,,, n _, ...-,,..,,.,,�..yr.r., , '�rf.}VA 43498 M •e t 5»t S:01.0' # V est r E 0 tLat: h t Z 1.14 Miles 0 0.57 1.14 Miles I ' 1: 36,112 0 This map is a user generated static ent,,ut fn„a eh,blest,,,,t1,,,,-site and WGS_1984_Web_Mercator Auxiliary_Sphere is for reference only.Data layers that appear on this map may or may not be ©Latitude Geographies Group Ltd. accurate,current,or otherwise reliable. THIS MAP IS NOT TO BE USED FOR NAVIGATION Geocortex "..Essentials LEGEND Groundwater Monitoring Well LACDPW SWED Database Location 3 Location 4 GEOLOGY AND SOILS LOS ANGELES COUNTY DEPARTMENT OF PUBLIC WORKS co �' M GEOTECHNICAL AND MATERIALS ENGINEERING DIVISION >) ' I II' I I1 O Z Fill, I I I I ,,,,i �� 8 R�•`a�l�llw Ill �iii1\ o Groundwater Monitoring Well Locations %��' _„ ii (A Locations 3 and 4 o o �r..■ y Citrus, CA GEOLOGY AND SOILS Date: May 2018 Drafted by: VM Scale: As Shown FIGURE 1 Rio Hondo Groundwater Elevation of LACSW Monitoring Wells Monitoring Wells West of Location 3 and 4 700 600 via 4319AH Ekvauon 500 We04288A Elevation Well 4279D Elevation 400 -Well 4319AH �" 300 ---Well 4288A a 200 -Well 4279D d 100 0 a 4 0 0 1928 1942 1957 1971 1986 2001 2015 Year Monitoring Wells East of Location 3 and 4 o 800 iy 750 Well 4348D Elevation 30 -- --Wel 4349B Elevation g 700 Wel 4337C Elevation 650 Well 4337C 600 Well 4349B 550 -Well 4348D 500 450 400 1928 1942 1957 1971 1986 2001 2015 Year Technical Memo Rio Hondo/San Gabriel River Green Streets Investigations—Location 4 ATTACHMENT V PRELIMINARY ENVIRONMENTAL SITE SCREENING RESULTS Design Division .i1�'� L _WORKS' \44";:i December 19, 2017 TO: Hector J. Bordas Design Division Attention Josafat Flores Ei FROM: Greg Kelley GAPI (u I Geotechnical and Materials Engineering Division PRELIMINARY ENVIRONMENTAL SITE SCREENING GREEN STREET INVESTIGATIONS RIO HONDO/SAN GABRIEL RIVERS AREA 3 LOCATION 4, UNINCORPORATED AZUSA AREA PROJECT ID DES0002991 (PROJECT NO. F21816I26G) In response to your request dated June 20, 2017, and your September 25, 2017, e-mail, clarifying the project limits, a Preliminary Environmental Site Screening (PESS) was completed for the subject project. It is our understanding that the project scope is for the siting of various Low Impact Development features, including bioswales and drywells. Our PESS included a site reconnaissance, review of aerial photographs and topographic maps, and searches of publicly available regulatory databases. Based on available information, the site conditions observed, and the proposed scope of work, the results of our screening did not identify environmental conditions affecting the subject project. At this time, no further assessment is warranted. Note that our preliminary screening of the site conditions does not preclude that contamination may exist in subsurface soils at the site in areas that have not been identified as environmental concerns because: (1) contamination releases may not have been reported to the authorities, (2) contamination releases were not known to have occurred, or (3) data gaps exist in the referenced databases, historical photographs, or maps. There is also the possibility that site contamination may occur subsequent to our review. Additionally, if impacted soils are encountered during construction, the project contractor should implement proper health and safety measures and appropriate contaminated material handling and disposal procedures. This PESS is generally considered applicable for a period of 180 days from the date of this memorandum and is recommended to be updated thereafter as needed. If you have any questions regarding this matter, please contact Phuong Schmit-Kallas or Gregory Sena at Extension 4923. To provide feedback on our services please access http://dpw,Iacounty.gov/qo/gmedsurvey to complete a Customer Service Survey. c4 PSK:GS:kw ,,-*I' mepub'secretar aI.geo nv',,pess`•2O17',.hondo-gabnel area 3 location 4 docx cc: Construction (Enriquez) Design (Davis, Fivipg, Wu) GREEN STREETS INVESTIGATIONS RIO HONDO/SAN GABRIEL RIVER TECHNICAL MEMO — LOCATION 5 PROJECT SCOPE • Location: Unincorporated Community of East Pasadena (TG pages 566-H5, H6) • Tributary area: Total area = 68.3 acres, Pipe Flow = 61 acres, Surface Flow = 0 acres • Rio Hondo Watershed RAA Volume: 4.79 acre-feet • Area Jurisdiction — 100% within County Stormwater Quality Division requested Design Division (DES) to conduct a green street feasibility study for various locations in the Rio Hondo/San Gabriel River watershed. These locations were submitted to Stormwater Engineering Division (SWED) to prepare tributary area maps showing the drainage area for each location. Based on the tributary area for Location 5 provided by SWED (see Attachment 3), DES conducted a field reconnaissance to identify potential locations for Low Impact Development (LID) features (see Attachment 1 for location maps). The following requests were then submitted to the following support divisions to provide necessary information to assess the feasibility of each location. Division Information Requested Date Requested Attachment Construction Preliminary Utility Search May 23, 2017 N/A* Geotechnical & Preliminary Environmental June 20, 2017 5 Materials Engineering Site Screening (PESS) (GMED) Cone Penetration Test August 1, 2017 4 (CPT) *Preliminary Utility Search responses are on file and available upon request. FEASIBILITY REVIEW Review Categories Category Description Subarea References the subarea number in the hydrology map prepared by SWED (see Attachment 3). Subareas are sorted generally from upstream to downstream storm drain flow. ID Number provided to reference individual LID features within one catchment area. PESS 'X' indicates potential presence of contaminated soils in this location. Confirmation of this contamination will require the depth range of the proposed LID and additional file reviews from GMED. Utility Search 'X' indicates potential conflict with one or more utilities. Due to the margin of error associated with aerial, property line, and utility information, the exact locations of utilities need to be confirmed through potholing. CPT `X' indicates this location may not be suitable for infiltration due to a soil profile consisting primarily of clayey material or a shallow groundwater table. Further subsurface investigation by GMED is CPT warranted to completely exclude the location from onsite infiltration. Biofiltration may still be possible. Feasibility Tier Provides a ranking of proposed locations based on all review categories. No potential issues were found at Tier 1 locations and should be considered priority for further development. Tier 2 locations may have a combination of potential utility and infiltration issues. Tier 3 locations have potential soil contamination and may have additional issues. These are recommended as a last priority. Review Results The below table summarizes DES's findings for the potential LID locations based on a concept level investigation. Further investigation is required during the Project Design Concept Phase to confirm the impact of the issues on the proposed scope of work. See Attachment 2 for schematic diagrams of the proposed features. Potential Issues Subarea V85th Cumulative ID PESS Utility CPT Feasibility (ac-ft) V85th (ac-ft) Search Tier 5-1 X 2 5-2 1 5-3 1 5-4 X 2 5-5 1 1A 1.240 1.240 5-6 1 5-7 X 2 5-12 1 5-13 1 5-14 1 5-15 X 2 5-8 X 2 5-9 1 5-10 X 2 5-11 1 5-16 1 5-17 1 5-18 X 2 5-19 1 2A 0.839 2.079 5-20 X 2 5-21 1 5-22 1 5-23 1 5-24 X 2 5-25 X 2 5-26 1 5-27 1 5-28 1 Potential Issues Subarea V85th Cumulative ID PESS Utility CPT Feasibility (ac-ft) V85th (ac-ft) Search Tier 5-29 1 5-30 1 2A 0.839 2.079 5-31 X 2 5-32 1 5-33 1 Technical Memo Rio Hondo/San Gabriel River Green Streets Investigations—Location 5 ATTACHMENT 1 LOCATION MAPS Design Division f: I I OAKDALE AVE V V SHT 4 I - v , r . o J LAURITA AVE m o SH7 3 ! o al L la a L- ( a o a �IIz m 1A u LII J m i I ANITA AVE I LJ N L III iG • Slit 2 • • r r CALIFORNIA BLVD "� _ ! L -m IV LEGEND s G III PROPOSED LID FEATURE ; SUBAREA BOUNDARY u o YIA LISPED NUMBER Cowry Of AOS ADCELES MPAPT<xT M PIAL IC NMI fl./1. -y ALM DIRECT. GREEN STREET INVESTIGATIONS MO SOYA —EGi1nID STORY DRAIN RID HONDO SAN GABR I EL o LOCATIONS LOCATION 5 KEY MAP 3 PPCA 10.G I1.E.T I n MATCH LINE SEE SHEET 3 IIx; E " A _ 11i Q \.V O Z P o-� I ro I E CALIFORNIA BLVD 'P'r L E]. � .� ;z: ,. 1 wr—f Por—, a LEGEND GnR.i.Of LOS ANGELES OCP•Ar.ENi Of Pull..l PROPOSED LID EE+IORE - FLOP DIRECi1M E O PROPOSED LID F4iMK ID .-EXISTING STORM DR+IN GRERIO HONDOEET INVESTIGATIONS SAN GABRIEL sue+PEA eaxmwar LOCATION 5 3 IP SIB+REA MUNREP LOCATION MAP .A.N IrcX ID.G ILKEf E ram ....r ...SRE I I MATCH LINE SEE SHEET 4 W U /—R.• o v i O 5y LAUR ITA AVE m 2 a cca V 4 o 3 / i RAY—/ Ckl: �T� R Z El O I m U I 3 I ei • LEGEND MATCH LINE SEE SHEET 2 � mur.or ca wcucs a...r.YNr s Au. PROPOSED 110 FEALURE iEO.XII% p. PROPOSED AID FEATURE ID —EXISTING STORM DRAIN GREEN STREET INVESTIGATIONS RIO HONDO SAN GABRIEL SUBAREA BOUNDARY LOCATION S IR SUBAREA RAWER LOCATION MAP NT. Io.R Iwar X Ya... .as n..... I r - : I OAKDALE AVE h Q Q , O Q Pir V o' o Q _ m 1 ¢ v'A 4 V o y O IZ i Y O J S O U 3! I c: 1 LEGEND MATCH LINE SEE SHEET 3 m,.,..R.L . AAAA x,RE.H.LI�.aH,E e vxorasEo uo rErtuRE — nm mRECTI°N GREEN STREET�INVESTIGATIONS .o XUE ®PPOPOBEB LIB EEAtURE IB Ex ISl IxG BLpliu OPAIx R10 HONDD SAN GABRIEL BUBARE•BfINDARY LOCATION 5 S IA SUBAREA HUBER LOCATION MAP 1.t. I� Technical Memo Rio Hondo/San Gabriel River Green Streets Investigations—Location 5 ATTACHMENT II LID FEATURE TYPICAL SECTIONS Design Division �►h PUBLIC WORKS SWALE WI KEYED HEADER OPTIONAL DRY STREAM BED TYP CURB ADJACENT ��‘ t, 4i 44/ PRO BIT ,/v �` '� � � ,.- `iv_=iabA ROAD /� � � tttel�O��I`IpI�I�I�IpIpIpIO�`����`�•4 ;\\�\� INLET 9'-10" MIN SECTION VIEW- AREAS WITHOUT SIDEWALKS AND NO PARKING SIDEWALK SWALE WI OPTIONAL DRY \� STREAM BED TYP CURB ADJACENT �` � ���/ PROPERTY r� ', 4 R OAD \/\/ . $ a / � I4�14470;47�" *I•tII� l / INLET ET \ � IIvo� p / 13' MIN SECTION VIEW- AREAS WITH SIDEWALKS BUT NO PARKING SWALE WI SIDEWALK OPTIONAL DRY STREAM BED STEP OUT \,,�y STRIP P ADJACENT `i �4 \'/ \4j 4 / SPROPERTY •_ • ice� 700071417/* ``WIIII` INLET LET IIIIIIIIIIIIIIIIIIIII I I I AAz\/ / i . AAAA AA 14'-6" MIN SECTION VIEW- AREAS WITH SIDEWALKS AND PARKING SLOPED BIO-SWALE (RAIN GARDEN ) SURFACE TYPE LID 4" HIGH CURB REQUIRED FOR ADA, W/ CURB CUTS SWALE TO ALLOW RUNOFF INTO SWALE SIDEWALK -\ 1) TYP8" CURB ADJACENT \ Ii,. PROPERTY I _. - --:--,..::',--:-*--•.: .�� ,�. ��liA,;:. ._ ��,Cj\y\y � : :\ ROAD •„ ,, 0�'000000�'0 / INLET 0440,44000044%\ \ \\i\�,,/>� / 7'-6" MIN SECTION VIEW- AREAS WITH NO PARKING 4" HIGH CURB REQUIRED FOR ADA, W/ CURB CUTS SWALE TO ALLOW RUNOFF INTO SWALE SIDEWALK STEP OUT 7 STRIP ' ADJACENT \ j . , .k4PROPERTY . ` ` ,ii ` . ROAD \' \/\\%\‘ �� y� �� - = . \\ \\ \\ \\ ,..: �'��'�tlit �fetetti :_' % CONCRETE EDGE PAVERS RESTRAINT TYP CURB BEDDING SAND1",�' ,.\ ROAD liMIL iA \\/\ III-1 -‘/�///j//�//\ / /\ RESERVOIR OPTIONAL AGGREGATES4' MIN SIDEWALK DRAIN PIPE SECTION VIEW- PERMEABLE PAVERS - SIDEWALK PCC EDGE RESTRAINT CONCRETE PAVERS z TYP CURB DRIVING BEDDING SAND LANE �I I _II �I I �I .�Nt,�yR'�y�'�3!,-�-�`��.`!'��y!H.:f3�`a��i'9�-•irk »yE!`�`�t�� i I I-. 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I 1 L-111_1 i=iii-11 1- RESERVOIR ��-111-111-111- " AGGREGATES 8' MIN PARKING LANE SECTION VIEW- PERMEABLE CONCRETE OR ASPHALT - ROADWAY PARKING LANE PERMEABLE CONCRETE / ASPHALT PAVING SURFACE TYPE LID CURB INLET STRUCTURE W/ SCREENED CURB CUT STEP OUT STRIP, ki i D.G. OR OTHER INLET PIPE PERMEABLE PAVING W/ SCREEN \/\ ; AAAAAAAAAAAA. 40........., . : ,:\<\ , iiiiiiiiiiii8 4110#4.04 1 '\y's \\i \!\\fir\\/\\fir\\r\,\\/,,,r\\r\\r�\/�\/�\/�\ \/\i\/\ii�;/;/ \\\'r\r�\i�\i\\,/ ,/�i\i \/\rj\\/\�\\�/��\j� � \��\rr\\r\\\\�/��/r� %%rte\�\`i�\\j\\/\�\\�\\�\��� r\ LONGITUDINAL SECTION VIEW PREFABRICATED RIGID, OPEN GRID, STORAGE MODULES WRAPPED IN PERMEABLE GEOTEXTILE FABRIC STEP OUT STRIP, i D.G. OR OTHER PERMEABLE PAVING 1 TYP CURB ROAD CROSS SECTION VIEW PREFABRICATED RIGID, OPEN GRID, STORAGE MODULES WRAPPED IN PERMEABLE GEOTEXTILE FABRIC CURBSIDE INFILTRATION UNITS SURFACE TYPE LID GRATED INLET •: ,, :'t : M SKIMMER BOX =111•11111NM=MIS===1111111.1===IIINI•I K: x AMIIIIIP1111111111111111111111111111111 . s' . ====tM.l•mmiummmms. I I I I I 11 ', CONCRETE BORDER 1 1 1 1 1 1 1 1 1 1 1 1 11 1 1 1 1 1 1 I I I I I I I I 1 1 I 1 I 1 I1 I I 1 1 1 I 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 I I I I I I I I 1 1 I I I I I I I II 1 I I I 1 I I I 1 I I I 1 1 I 111111111111111111111111111111i ° Il 1.--1' I I I I I I I I IIIIII 1 1 1 I =1Q PERMEABLE PAVERS : 11 I 1 I 1 I 1 I I 1 I 1 I 1 I 1 1 1 I 1 I I 1 1 1 1 1 I 1 11111111 OVER INFILTRATION .. 1 1 I 1 I 1 1 1 1 1 1 1 I 1 II I 1 1 1 1 1 1 1 1 1 1 1 1 1 1 l I l t l 1 1 'M t STORAGE GALLERY '` I I I I I 111111 I I I I I I I 111111111111 I I I TYP CURB hl 1 I I I I I I 1 1 I I I I I 1 I I 1 I 1 I 1 I 1 1 1 1 1 1.i'` .::;...-, . AND GUTTER ',mmosommimmismosimmmummli. mmomommommEmmommir- OBSERVATION ,:.,,.... ==IIIIIIIIIIMIIM PORT PLAN VIEW SHOWN AT TYPICAL CUL-DE-SAC CONCRETE AGGREGATE PERMEABLE SKIMMER BORDER BASE PAVERS BOX - .1!* ROAD "-s-'I` Ss s"✓ ,.,.,` ,gym:°-,,, iii= STRUCTURAL =%13 I 1_11 i BACKFILL EI% 1�' 1,' — - I111 11111111- III- " STORMWATER SECTION VIEW PERMEABLE NON-WOVEN STORAGE GEOTEXTILE FABRIC MODULES INFILTRATION STORAGE GALLERY SUBTERRANEAN TYPE LID MANHOLE FINISHMANHOLE -\ COVER GRADE COVER \ \`//\\\/\\/\".• \/////////////// //// /\/\//-, /,//\,, ✓ /v///\/!::)." 9 0 0 ipw\„. �/ /\//\//\ /\//\//\//\/�\////\ .ti ,�1/\/ INLET - FROM /ice �C.,i / / \ ' A< STORM DRAIN ,/\\, j \i\\i\\i /\\/\\/\ ,i: �.� \i\\i\\i OR OTHER 2\ . . i;"*• 1 \�j\�/ /,\�j\�/\�/\�jI• a o 0 T \ SOURCE \/ //\/\/\/\/\/\�\/\ ///\ \. \/ /\ /'gore1 1.,..('' / \�\// \ .l 1 0 y0 0 ` r/i\\//\\/�\\//\ • dri x \ iii �\ ` � • %\ / \ i •J O D 0 /\j\ %\ /2jj\j \PRE-TREATMENT AND �/ /% � ;i4 SEDIMENT SETTLING CONNECTOR ��\\\ \\/%7 .'' WELL PIPE \\/// o0 o ">/ r / /\/i\/i\/ice A. if o/ i�\ \, PERFORATED \/ //„/\ s t \ „›,/ \\. Q 0 A�ii CONCRETE / `�, o \ 4 DRY WELL , / \ 0 0 0 .P0* \\ / /\t i;ri.► i///� i//i\/i 0 0 0 /\\j\� AGGREGATE \/\\/ /\\/\\\ \\/� >//\/// A/�\A/ : u 0 0 0 _ , // /moi\�/�;; �\ \ /�; \\j/\\\/\/\/\/.� 0 0 0 \\\/< i\/i////i//i! , \/< NATIVE SOIL r\\//\\//\\//\ \' 0 0 0 — /\//\/ (DRY WELL TO EXTEND �\\/\\�\\\/\\\/\\\/=". j\\/\\� TO WHERE SOILS ARE �\\�\�\\\��\\��\\�4 o 0 0 -, \�� PERMEABLE) �i�\i\\i\\i\\\i " SECTION VIEW . / ///\//\//\/ \/Vc/\%\/\/\%\/\/\/ DRY WELL \%, %, /%,%',,,. SUBTERRANEAN TYPE LID Technical Memo Rio Hondo/San Gabriel River Green Streets Investigations—Location 4 ATTACHMENT I I I HYDROLOGY Design Division WORKS \11,14".- P ' - 7,,:-'''' -----i' '. ,_; - 85th-percentile 85th-percentile ' _ f Total Area Total Q85th Total Volume Subarea Subarea Q85th Subarea " ' '' v _ t •_ Location (acres) (cfs) (ac-ft) (acres) (cfs) Volume(ac-ft) '� y 1A 34.40 3.88 1.240 34.4 3.88 1.240 ° 1 # .. N 2A 57.30 6.5 2.079 22.9 2.62 0.839 a , , ' _ +' 4A 68.30 7.84 2.510 11.0 1.35 0.431 Zr OAKt�AL AV i / ilti.....1 a . 1 ^� .�,^ � _ All; �:„?-,,,,,: - �� u 3 k 44, t161V1 T '''' - 40.44. AFRI ... _olio., [ unit, ,...,... i 1 o. 440. . „ iii, ;i.. /IP :.1144 , 1.Ai i , '+' nir rpr *.--14P:, ,.. 2A .,., . ..*, 111114' 63. MY- - rip, ' -, J :it' - ",'*!'-** - - 05 ' l'Ckg‘itklj' • • T-'. .-4- ' .. . 111;441111:?0'. ' 4°1-: , *.,.. ,1-'-- ' 1)\" 5 4A ____ .• -,....) ,----. 7-'4.3 [.... .4*II-1‘' - Locations *' ic `) r Total Area: 68.3 acres i l -.,- Total 85th-percentile Q: 7.84 cfs LEGEND � " Total 85th-percentile Volume: 2.510 ac-ft .� Subarea Boundary ►" :` p f Project Outlet *� �� ` Collection Point SAubarea 1A Subarea Number '1111 y , ' Existing Drain Ilt_olv. ,: - I' *: _ PREPARED BY LOS ANGELES COUNTY •,-. Y 'r - r 4 +, 1 SM DEPARTMENT OF PUBLIC WORKS ' • 0 1.444 fps, R it,. 4,-- ," - DATE JI,_, ':-TOPS D __ `- — 07/18/2017 RI-ISGR GREEN STREETS OR _ - SCALE LOCATION 5 0 200 400 800 Feet 1"- 400' 85th-PERCENTILE DESIGN STORM - t , Technical Memo Rio Hondo/San Gabriel River Green Streets Investigations—Location 4 ATTACHMENT IV CONE PENETRATION TEST RESULTS Design Division JI 1 PUBLIC WORKS B (.A6(1AL t . AV -- rimy 5H 1 Fif. _ ¢ i '; LAL iG � '. 2 2 i' - ';;,",!'''Z''.?:'":::,'.,'-1`..2� �s m N 06 TA A4 mss 4If..€. ..! LS-! 1 L:,:.IF ,!;Nd .-..—�-. -.may ,.. Ar y i s i { i LEGEND ry ;L r ^. ..n>o.rr,u GREEN STREET INVESTIGATIONS RIO HONDO SAN GABRIEL S CPT Location — ♦an' AREA 1 -LOCATION 5 • y1 .1X� X' Cross Section Location ... + a NEY MAP .i.nra.s swrmx... ... i.c. low lire, . m CROSS-SECTION A-A'I MICHIGAN BLVD. N S C A 610— —610 NAND AUGER 600—�— to 6' L6-1 —600 _ L6-2 590--1'� f :4?r}?rld.9. ' fat NAND .....-590 `�"�. _ u; TJir3 L6-3 AUGER 7;'.7:-.7.7.77,7;7,.Z",,7. _ to 6' c580—•'••. .1 .—_— :-..,. ..3,77,-.7.77,!:.........17.77 580 n 570--r ;• / 9 ... ▪ .• 5 e..: • 560 sv sP • - `% e—560 —550 1� ✓ • �_540 w i = t1�• 7G47 U1T4;t -------- — • 1. • • .77 .7'.. ..'7'''..7.::....:;.::.1'7,'.7.7:7::.* ▪ .• :.7'.540 r J 9 530x. . l .0` � •r•°..'.. ' . • .•;+--.5552310570— . .... ..... 500510-4s• %':'.:'........')....'::.......:....'' ' .... ..... ▪... . . .... .. , 00 LEGEND ' Cone Penetration Tea(CPT) ML I'I' SlR poNwe q.a-at.rue.yr•..H�wnrso.a w.n �- Greund Surface p.r maw SM 'lig SAY Sand 00�an` Perecoaaon Zone -'^/SP wFgladed or PoorlygWeA Send / Defined contact F... >" Contact uncertain eo.�. neraw COUNTY OF LOB ANGELES DEPARTMENT OF PUBUG WORKS !y( GEOTECMJCALAIO IMTERULS ENGREERNG OM50N CROSS ECTION A-A' L : :b,,eFesUppr naibility AnarosooMlchlganBd..Pam0000ll sadena.CA GW FEB)OIS I Geibenc:NW I &Me nne,o I FIGURE I CROSS-SECTION B-B'I WOODWARD BLVD. 11. p a B L' F OLD 610-- N 'W t 0-S15 W - 610 HAND AUGER L5-4 L5-5 600--••— to 6' -�600 L5-6 L6-7 L54 —590 L5-9 HAND 580—.. AUGER —580 to 6' r - .F _ —570 560 .. >+• t, ��: %` '.'...7.'.7...:.----560 n� 550 r % -� SW 5P ;• 7 540 !! % A' 540 530—..a_. 510 - (/// ._._520 .::: 510--e ^.°,.. .. 510 :;Fig 500=..:. _ _ _ .,.. _ .,.. .. _ . .. .. . e •.. 500 LEGEND prory Mea bn SloremmabraE gYr:r n ssr�na"Wen y g Glvlalen's I Cone Penetralon Tat(CPT) ML MI SII Gamboa.inai..rw m.were.Yvel No be deeper m.. 100 a Ground Surface SM =I SINy Sand M P rfacol bon Zone `Al SP = Wel waded or Poorly-graded Sand Defined contact n a.o.F ..>"' contact �a ..ss COUNTY OF LOS ANGELES DEPARTMENT OF PUBLIC WORKS GEOTECMCAL AND MATERIALS ENGINEERING GIWISION CROSS SECTION B-8' Rio Rondo and Upper San Gabriel Feasibility Analysis Lowlion 5 Woodward BNtl.,Pesatlena.CA flu.F®.18 1 Dae.abe pea 1 Sulo.as AN..n I RGl1RE I i I 1 I, 4136K 4136A 11 Ila: , I L, .. • 41361 Y.I.iI I NOV di East San Gabriel Ilu:p, I; I .,nit to* i. I I i' in .. Ik. i i Ii .I.i1 1 f',VE 1: 9,028 ,,, 0.28 Miles Q 0.28 This map is a user generated static output from an Internet mapping site and is for reference only.Data layers that appear on this map may or may not be accurate,current,or otherwise reliable. THIS MAP IS NOT TO BE USED FOR NAVIGATION WGS_1984_Web_Mercator_Auxiliary_S phe re ©Latitude Geographics Group Ltd. Geocortex LEGEND ".Essentials Groundwater Monitoring Well LACDPW SWED Database Location 5 GEOLOGY AND SOILS LOS ANGELES COUNTY DEPARTMENT OF PUBLIC WORKS J GEOTECHNICAL AND MATERIALS ENGINEERING DIVISION /aill� IYIII ,yll� ' Groundwater Monitoring Well Locations ;� ° Location 5 ° Pasadena, CA GEOLOGY AND SOILS Date: May 2018 Drafted by: VM Scale: As Shown FIGURE 1 Rio Hondo Groundwater Elevation LACSW Monitoring Wells Location 5 1( 600 Well 4136K Ekvatkn Well 41361 Elevation -- Well 4I36A Eleven. .__.._.,.�...___s..d:„..,..._ 550 ` 1$ , m a 500 a i f 1 , g N o I 14 lilt r ' '---- Well 4136A 450 `I @ � Well 4136K [i � 3 1 \ Well 41361 N I Ef I:1 400 lli3O a 7 0 C7 350 300 1924 1939 1954 1969 1984 1999 2013 Year Technical Memo Rio Hondo/San Gabriel River Green Streets Investigations—Location 5 ATTACHMENT V PRELIMINARY ENVIRONMENTAL SITE SCREENING RESULTS Design Division :All' ' / December 19, 2017 TO: Hector J. Bordas Design Division Attention Josafat Flores 4 i;,H, FROM: Greg Kelley (::°1 �� Geotechnical and Materials Engineering Division PRELIMINARY ENVIRONMENTAL SITE SCREENING GREEN STREET INVESTIGATIONS RIO HONDO/SAN GABRIEL RIVERS AREA 1 LOCATION 5, UNINCORPORATED CHAPMAN WOODS COMMUNITY PROJECT ID DES0002991 (PROJECT NO. F21816126G) In response to your request dated June 20, 2017, and your September 25, 2017, e-mail clarification, a Preliminary Environmental Site Screening (PESS) was completed for the subject project. It is our understanding that the project scope is for the siting of various Low Impact Development (LID) features, including bioswales and drywells. Our PESS included a site reconnaissance, review of aerial photographs and topographic maps, and searches of publicly available regulatory databases. Based on available information, the site conditions observed, and the proposed scope of work, the results of our screening did not identify environmental conditions affecting the subject project. At this time, no further assessment is warranted. Note that our preliminary screening of the site conditions does not preclude that contamination may exist in subsurface soils at the site in areas that have not been identified as environmental concerns because: (1) contamination releases may not have been reported to the authorities, (2) contamination releases were not known to have occurred, or (3) data gaps exist in the referenced databases, historical photographs, or maps. There is also the possibility that site contamination may occur subsequent to our review. Additionally, if impacted soils are encountered during construction, the project contractor should implement proper health and safety measures and appropriate contaminated material handling and disposal procedures. This PESS is generally considered applicable for a period of 180 days from the date of this memorandum and is recommended to be updated thereafter as needed. If you have any questions regarding this matter, please contact Phuong Schmit-Kallas or Gregory Sena at Extension 4923. To provide feedback on our services please access http://dpw.Iacountv.gov/qo/gmedsurvev to complete a Customer Service Survey. K:GS:kw c.gmepub'secretanaI geo,nvlpess1201 T\hondo-gabnet area 1 Iecat:on 5 docx cc: Construction (Enriquez) Design (Davis, Fung, Wu) o lir :- 14 t 4 A N r.ITe:Av12.7_ 4. .44. K ' . ...„... ...... . ,_,, „. , , „, r , . , ,„ , , , ..__ ___ ' ' '''"1:1^114'4:. t4[6. p at 1 n 2-- 4triati4- t I ;1 • 200 0 -... a- •.„ t. • oozy ik e. ., i { o ; 0 0 0 ,. lit, L CAI i ORNIA BLVD 0 \� po0 /7 J ca . <AN l'4111Fir " -C*44 v1 i n- ,,,� i.f yo-" I 11, { - # � itit- ;. .tet ,t.410r A , iiv , Ge rt.. �' , !itit, 1i +1 '. ' . r Ot DR 1.,„i. (—raw- 1, 41 , ' Ilt, * .-f.,*:, , . ..:,,6•,„", ' :i/#4'•' iir—r-4,A.; — 4 ' - , ' .i. -,i,„ y . V q .,-r----- m-- ypt a °a �,x Pt' .� - t k a . 4� 4. !y, t spa ii4 * - - ''' ' - '114(41AAt" "- „ 914: . .. .,, tab,a woo,* N tib. t MICHItINDA PARK . t 1 e i x 41.80 ACRES $4' . csifillow*""t' - --•-- HUNTINGTON DF ------------ H:ids;T!t 1GT0,,N:2:1-< _, A --_ ----1 .IVII!alte Writ- r .A ,... :,.., ,, ., * s a 1 I . sitt CO r_2; ' t — t 1 I 1 04. 't i j 1 .r, . , .. .. {}._, < "-- _,,,it! 4. - ' 414 'Oki P i.---,e. ........IF r-4 ' €�� 4, . �. ° SOUTHVIE _ 1 - tt'-;"-: - itr a& &1 I" ; ,c • 14 1 r,k_,,.�� ;i".1 I aunty !t Ar X 10' EXHIBIT C RIO HONDO/SAN GABRIEL RIVER WATERSHED QUALITY GROUP WMP RESPONSIBLE AGENCIES REPRESENTATIVES City of Arcadia City of Bradbury 11800 Goldring Rd. 600 Winston Ave. Arcadia, CA 91066 Bradbury, CA 91008 Representative: Vanessa Hevener Representative: Kevin Kearney E-mail: vhevener@ArcadiaCA.gov E-mail: KKearney@cityofbradbury.org Phone: (626) 254-2712 Phone: (626) 358-3218 City of Duarte City of Monrovia 1600 Huntington Drive 600 S. Mountain Ave. Duarte, CA 91010 Monrovia, CA 91016 Representative: Amanda Hamilton Representative: Alex Tachiki E-mail: AHamilton@accessduarte.com E-mail: ATachikit@ci.monrovia.ca.us Phone: (626) 357-7931 Phone: (626) 932-5553 City of Sierra Madre County of Los Angeles 232 W. Sierra Madre Blvd Los Angeles County Public Works Sierra Madre, CA 91024 Stormwater Quality Division, 11th Floor Representative: James Carlson 900 South Fremont Avenue E-mail: Alhambra, CA 91803-1331 JCarlson@cityofsierramadre.com Representative: Mark Lombos Phone: (626) 355-7135 ext. 803 E-mail: mlombos@dpw.lacounty.gov Phone: (626) 458-7143 -2- FIRST AMENDMENT TO THE MEMORANDUM OF UNDERSTANDING BETWEEN THE LOS ANGELES COUNTY FLOOD CONTROL DISTRICT, THE COUNTY OF LOS ANGELES, AND THE CITIES OF ARCADIA, BRADBURY, DUARTE, MONROVIA, AND SIERRA MADRE REGARDING THE ADMINISTRATION AND COST SHARING FOR THE IMPLEMENTATION AND ADMINISTRATION OF THE ENHANCED WATERSHED MANAGEMENT PROGRAM (EWMP) FOR THE RIO HONDO/SAN GABRIEL RIVER WATER QUALITY GROUP'S WATERSHED This First Amendment to the Memorandum of Understanding Between the LOS ANGELES COUNTY FLOOD CONTROL DISTRICT, the COUNTY OF LOS ANGELES, and the CITIES OF ARCADIA, BRADBURY, DUARTE, MONROVIA, AND SIERRA MADRE (collectively these entities shall be known herein as "PARTIES" or individually as a "PARTY") dated August 29, 2013 ("EWMP MOU") is hereby made and entered into as of the date of the last signature set forth below by and among the PARTIES. WITNESSETH WHEREAS, the PARTIES wish to amend the EWMP MOU to extend the administrative collaboration on the compliance of certain elements of the MS4 Permit and have agreed to a cost sharing formula set forth in Exhibit A for fiscal year 2016/2017; and WHEREAS, the PARTIES submitted an Enhanced Watershed Management Plan (the "EWMP") to the Regional Board on June 28, 2015, and it was approved on April 21, 2016. The Regional Board's approval of the EWMP directed that implementation of the EWMP begin immediately; and WHEREAS, the PARTIES have agreed to collaborate on the initial steps to further investigate the feasibility of various regional multi-benefit projects and comply with certain elements of the MS4 Permit and have agreed to a cost sharing formula set forth in Table 2 of Exhibit A, which is attached and made part of this MOU; and WHEREAS, the PARTIES require the existing EWMP Consultant, CWE, to perform additional work to assist the PARTIES in the initial steps by investigating the feasibility of various regional multi-benefit projects and comply with certain elements of the MS4 Permit; and WHEREAS, the PARTIES propose for the Consultant to perform soils investigations and a feasibility analysis of various regional project sites and also to comply with certain elements of the MS4 Permit, at a total cost not to exceed $541,682.50; and HOA.101310655.1 Page 1 of 12 WHEREAS, the PARTIES have determined that directing the Consultant to further investigate regional projects and implement certain elements of the MS4 Permit will be beneficial to the PARTIES at a total cost not to exceed $541,682.50. The PARTIES shall provide funding in accordance with the cost allocation in Table 2 of Exhibit A. NOW, THEREFORE, THE PARTIES AGREE AS FOLLOWS: (1) Purpose: The purpose of this First Amendment is to cooperatively fund various EWMP implementation activities such as performing soils investigations, preparation of documents for adaptive management as required, preparation of revisions or updates to the EWMP as required, implementation of educational outreach efforts. This First Amendment shall allow the PARTIES to obtain the services described above until such time as a formal body (JPA, Special District, etc.) can be created to oversee these types of EWMP implementation activities. (2) Exhibits A and B of the EWMP MOU dated August 29, 2013, is hereby replaced with Exhibits A and B of this First Amendment. All other terms and provisions contained within the EWMP MOU shall remain in full force and effect except as modified by this First Amendment. (3) Section (4) of the EWMP MOU is hereby amended to read as follows: Terms: This MOU shall become effective the last date of execution by all PARTIES hereto ("Effective Date"), and shall remain in effect until all PARTIES agree to terminate the MOU and adopt a formal body (JPA, Special District, etc.), the CITY OF ARCADIA has provided written notice of completion of the Scope of Work described herein, and payment by all Parties of their allocated pro-rata share hereunder. IN WITNESS WHEREOF, the PARTIES hereto have caused this First Amendment to the EWMP MOU to be executed by their duly authorized representatives and affixed as of the date of signature of the PARTIES: HOA.101310655.1 Page 2 of 12 COUNTY OF LOS ANGELES By � c ` rt-�- - �_ f�-/7' MARK PESTRELLA, Director of Public Works Date APPROVED AS TO FORM: MARY C. WICKHAM County Counsel By � C(( 7 Deputy Date HOA.101310655.1 Page 3 of 12 LOS ANGELES COUNTY FLOOD CONTROL DISTRICT By /16-e.4ES f; 'Ate iZ --/7 "4_ MARK TRELLA, Chief Engineer Date APPROVED AS TO FORM: MARY C. WICKHAM County Counsel By 6( 17 Deputy Date HOA.101310655.1 Page 4 of 12 CITY OF ARCADIA By � v (81?All Dominic Cazzaretto, Ci `Itianager Date ATT rST. 0/444,17e By A , ity C erk I ate APPROVED AS TO FORM: By P, 17) M 7 StepheS/tArk. , . Deitsch Date City Attorney HOA.101310655.1 Page 5 of 12 CITY OF BRADBURY By NAME, POSITION Date ATTEST: By NAME, City Clerk Date APPROVED AS TO FORM: By NAME, City Attorney Date HOA.101310655.1 Page 6 of 12 CITY OF DUARTE By / "1g-17 NAME, Pe-SiT49f4' alo a9ee Date ATTEST: j y` f r B �� lNAME, Clerk ate APPROVED AS TO FORM: By 6, Cure / 10.17 NAME, City Attorney Date HOA.101310655.1 Page 7 of 12 CITY OF MONROVIA By (3 Manager \2- 7 -- /2 0 U.lo '-`L-, iver Chi, City Date ATT • By \2' `e-1 ' 1 Alice D. Atkins, City Clerk Date APPROVED AS TO FORM: By Co�c�-- \'-' `y) ' 2 1 Craig A. Ste e, City Attorne Date HOA.101310655.1 Page 8 of 12 CITY OF SIERRA MADRE By /f it.(_ MO El - 'guitar, ty anager Date ATTEST: Byc\A s(?a /7 Melinda Carrillo, City Clerk Date APPROVED AS TO FORM: By t / /fo/)7 eresa ighs it , City Attorney Date HOA.101310655.1 Page 9 of 12 EXHIBIT A Rio Hondo/San Gabriel River Water Quality Group EWMP Implementation Funding Contributions Table 1. Scope of Work Scope of Work Cost Tasks (a) Final EWMP Revision and Checklist $22,000.00 (b) Geotechnical Investigations and Seismic Analysis $100,000.00 (c) Feasibility Study of Regional Projects Downstream Sites(includes a $399,682.50 15% contingency) (d) Education and Outreach $20,000.00 Total Cost= $541,682.50 Table 2. Cost Allocation Formula For FY 16-17 Party Base Fee Acres Percent of Cost based Total Cost (10%) (Develop Area(2) on Acres ed Land) (90%) City of Arcadia $8,158.57 11 34.16% $150,502.83 $158,661.40 City of Bradbury $8,158.57 1.9 5.9% $25,995.94 $34,154.51 City of Duarte $8,158.57 3.6 11.18% $49,255.47 $57,414.04 City of Monrovia $8,158.57 8 24.84% $109,456.60 $117,615.17 City of Sierra Madre $8,158.57 2.8 8.7% $38,309.81 $46,468.38 County of Los Angeles $8,158.57 4.9 15.22% $67,042.17 $75,200.74 Los Angeles County Flood Control District(1) $52,168.25 - - - $52,168.25 Total $101,119.68 32.2 100% $440,562.83 $541,682.50 (1) Los Angeles County Flood Control District's cost share equals 10% of total contracted costs except for Task (d) Education and Outreach; the remaining costs are then divided by the 10% base fee and land area (90%). (2) Based on percent of developed land in each Party area of the total watershed area (excludes Angeles National Forest land) HOA.101310655.1 Page 10 of 12 Table 3. Invoicing Schedule For FY 16-17 Invoice No. Invoice Date Percent of Cost Share Allocation 1 January 1, 2017 10% Base + 90% based on Land Area Allocation If necessary, the Oversight Committee may revise the Invoicing Schedule and adjust the percent of Cost Share Allocations as deemed necessary for such reasons including, but not limited to, revision in Contracted Costs, Scope of Work, scheduling of work, and/or costs related to environmental review. HOA.101310655.1 Page 11 of 12 EXHIBIT B Rio Hondo/San Gabriel River Water Quality Group EWMP Responsible Agencies Representatives City of Arcadia City of Monrovia 240 W. Huntington Dr. 415 S. Ivy Ave. Arcadia, CA 91006 Monrovia, CA 91016 Representative: Vanessa Hevener Representative: Alex Tachiki E-mail: vhevener@arcadiaca.gov E-mail: atachiki@ci.monrovia.ca.us Phone: (626) 305-5327 Phone: (626) 932-555 City of Bradbury City of Sierra Madre 600 Winston Ave. 232 W. Sierra Madre Blvd Bradbury, CA 91008 Sierra Madre, CA 91024 Representative: Bruce Inman Representative: James Carlson E-mail: binman@CityofBradbury.org E-mail: jcarlson@cityofsierramadre.com Phone: (626) 358-3218 ext. 300 Phone: (626) 355-7135 ext. 803 City of Duarte County of Los Angeles 1600 Huntington Drive Department of Public Works Duarte, CA 91010 Watershed Management Division, 11th Representative: Rafael Casillas Floor E-mail: rcasillas@accessduarte.com 900 South Fremont Avenue Phone: (626)386-6833 Alhambra, CA 91803-1331 Representative: Angela George E-mail: ageorge@dpw.lacounty.gov Phone: (626) 458-4300 Los Angeles County Flood Control District Department of Public Works Watershed Management Division, 11th Floor 900 South Fremont Avenue Alhambra, CA 91803-1331 Representative: Angela George E-mail: ageorge@dpw.Iacounty.gov Phone: (626) 458-4300 HOA.101310655.1 Page 12 of 12 Rachelle Arellano From: Rachelle Arellano Sent: Thursday, February 16, 2017 11:27 AM To: Vanessa Hevener Cc: Lisa Mussenden Subject: Signature Page - Exhibit A - First Amendment MOU Attachments: SKM BT_55217021611190.pdf Hi Vanessa, Please find the attached signed MOU. We are currently waiting for the fully executed copy. On January 25th we forwarded to Los Angeles County Flood Control District Department of Public Works for signature and to continue the circulation. Have a great day! Thank you, Rachel Arellano Records/Legal Technician City of Arcadia I City Clerk's Office A. 1 240 W. Huntington Drive, Arcadia, CA 91007 Direct dial: (626) 574-5453 Fax: (626)447-7524 rarellano@ArcadiaCA.gov This email and any files or attachments transmitted with it may contain privileged or otherwise confidential information. If you are not the intended recipient,or believe that you may have received this communication in error,please advise the sender via reply email and immediately delete the email you received. From: Vanessa Hevener Sent: Wednesday, February 15, 2017 8:40 AM To: Linda Rodriguez Subject: Signature Page Hi Linda, I was wondering if you could have Dominic/Steve Dietsch/Lisa sign 7 copies of the signature page of the First Amendment of the MOU (see page 5)which was approved by City Council on December 20, 2016. Please let me know if you have any questions. Thanks! V Aan.2/Ae i' eAr C9' Environmental Services Officer City of Arcadia - Public Works Services Department 11800 Goldring Rd Arcadia, CA 91066 P: 626-305-5327 I F: 626-359-7028 email:vhevener@arcadiaca.gov 1 Rachelle Arellano From: Stephen Deitsch <Stephen.Deitsch@bbklaw.com> Sent: Wednesday, June 3, 2020 10:44 AM To: Rachelle Arellano; 'Irodruguez@arcadiaca.gov' Cc: Vanessa Hevener; 'jmercado@ci.arcadia.ca.us' Subject: RE: Files for Steve's Review -June 2, 2020 Rachelle and Linda, et al.,the MOA regarding water projects presented to me yesterday to approve as to form is the version that does not have the corrected recital I earlier discussed with Vanessa—the Recital beginning not with "Whereas," but instead "Regional Board." ..0Cf Aed--kjgi Z Once that correction is made, I approve the MOA as to form, and you may affix my stamped signature. Thanks. Steve Stephen Deitsch Partner stephen.deitsch@bbklaw.com T:(909)483-6642 C:(951)662-9343 www.BBKlaw.com pp- S,Fay t home and public health orders issued in multiple counties across the U.S. require our offices to be physically closed, effective March 17, 2020. Because all staff are working remotely, all documents (including correspondence, pleadings, and discovery) will be served via e-mail until further notice. Because we may not receive regular mail or other deliveries during this period of time, please e-mail copies of anything you send by regular mail or delivery. Send all e-served documents in your case to the e-mail addresses for any Best Best& Krieger LLP attorney who has appeared in your case, or who has communicated with you by e-mail on your matter. From: Rachelle Arellano [mailto:rarellano@arcadiaca.gov] Sent: Tuesday, June 02, 2020 10:10 AM To: Stephen Deitsch Cc: City Attorney Subject: Files for Steve's Review - June 2, 2020 CAUTION - EXTERNAL SENDER. Hi Steve, Attached is a folder with documents for your review: 1. Covenant — 1104 S. 1st Avenue — REVIEW ONLY 2. Resolution No. 7318 - Review and Approval 3. Covenant— 300 E. Haven — Review and recommendations to create 1