{"id":11716,"date":"2023-03-23T19:32:15","date_gmt":"2023-03-23T19:32:15","guid":{"rendered":"https:\/\/pacpalicc.org\/?page_id=11716"},"modified":"2025-06-29T21:38:41","modified_gmt":"2025-06-29T21:38:41","slug":"drainage-and-soil-slippage","status":"publish","type":"page","link":"https:\/\/pacpalicc.org\/index.php\/drainage-and-soil-slippage\/","title":{"rendered":"Drainage and Soil Slippage"},"content":{"rendered":"<h3>Potrero Canyon\u00a0 &#8212; Drainage and Soil Slippage Updates<\/h3>\n<h6>LEGEND:<br \/>\nRAP \u2014 RECREATION &amp; PARKS DEPT.<br \/>\nBOE \u2014 BUREAU OF ENGINEERING<br \/>\nCD11 \u2014 OFFICE OF COUNCIL DISTRICT 11\/COUNCILWOMAN TRACI PARK<\/h6>\n<p><a href=\"https:\/\/pacpalicc.org\/index.php\/potrero-canyon\/\">Return to Potrero Canyon<\/a><\/p>\n<p>6\/26\/25: \u00a0See entries for 6\/26\/25 and 1\/7\/25 on the\u00a0<a href=\"https:\/\/pacpalicc.org\/index.php\/landscaping-weeding-brush-clearance-irrigation\/\">Landscaping<\/a> page, for information about\u00a0 closure and reopening of the Park due to the Palisades Fire in 2025.<\/p>\n<p>5\/1\/24:\u00a0 The conditions described below (cracks and fissures in trails; overgrown brush blocking trails) have been remedied.<\/p>\n<p>4\/9\/24:\u00a0 Large cracks and fissures have reappeared during the past few months in the Friends St. trail and other Park trails. Overgrown brush is also blocking trails.\u00a0 These conditions have arisen following storms in the past several months.\u00a0 RAP Maintenance Supervisor Robert Buenrostro advises that he has observed the conditions and has asked staff to work on the ruts and cracks throughout.\u00a0 He has also reached out to Kristin Ly of BOE, who states that she will have the landscaping contractor trim back the overgrown brush.<\/p>\n<p>8\/25\/23:\u00a0 The recent fissures\/cracks in Park trails have been largely remedied; RAP advises that it will address remaining &#8220;ruts&#8221; or depressions in the coming days.<\/p>\n<p>8\/23\/23:\u00a0 We have detected and notified RAP about persistent fissures and cracks that have again developed in decomposed granite (DG) along Park trails (the Friends St. trail and the &#8220;east side&#8221; trail), following tropical storm Hilary.\u00a0 RAP Maintenance Supervisor Robert Buenrostro advises that these will be addressed as soon as possible.<\/p>\n<p>8\/11\/23:\u00a0 See further entries under <a href=\"https:\/\/pacpalicc.org\/index.php\/landscaping-weeding-brush-clearance-irrigation\/\">Landscaping<\/a> (7\/26, 7\/30 , 8\/4 and 8\/11) regarding drainage and water on the main service road.<\/p>\n<p>7\/20\/23:\u00a0 See entries under <a href=\"https:\/\/pacpalicc.org\/index.php\/landscaping-weeding-brush-clearance-irrigation\/\">Landscaping<\/a> (7\/1, 7\/7 and 7\/20) regarding drainage and water on the main service road.<\/p>\n<p>6\/20\/23:\u00a0 The fissures, cracks and holes in the Friends St. trail and other Park trails have now been remedied by the RAP contractor.<\/p>\n<p>5\/30\/23:\u00a0 In response to ongoing questions about slope instability, drainage and the like, BOE&#8217;s Park project manager, Kristin Ly, has advised that geologists have reviewed the slopes and deemed them to be structurally sound, with some slippage occurring, which is currently being repaired by the BOE contractor for Park construction, Ford EC.\u00a0\u00a0We have been asked by BOE to communicate concerns through CD 11 and its field team as interlocutors.<\/p>\n<p>RAP maintenance supervisor Robert Buenrostro has been responsive; he has advised that RAP will address the fissures, holes and cracks in the Park trails this week.<\/p>\n<p>5\/18\/23:\u00a0 BOE advises that the major areas of soil slippage, specifically the slope areas along the main access road below the Friends St. trail, have been remediated.\u00a0 BOE has examined other areas of damage, such as cracks, holes and fissures along the Friends St. trail and other Park trails, and determined that these conditions do not involve structural damage.\u00a0 Going forward, an RAP landscape contractor (soon to be hired) will be responsible for remediation of these conditions along the trails.\u00a0 The PCOC* will continue to monitor.<\/p>\n<p>4\/18\/23:\u00a0 The Park will be closed for public safety during remaining slope repairs, from 4\/18-4\/21 and 4\/24-4\/28, according to RAP notices posted on the entrance gates.\u00a0 The Park will be open for public use on the weekend.<\/p>\n<p><span class=\"x_ContentPasted0\">4\/14\/23:\u00a0 &#8220;Advisory notice&#8221; signs have been posted at Park entrances, explaining that a portion of the main access road, from the Friends St. path to the PCH overlook, will be closed until May 10 for repairs to the slope in progress.\u00a0 The Friends St. and east side paths will remain open.\u00a0 Park visitors are asked to yield right-of-way to construction personnel and equipment.<\/span><span class=\"x_ContentPasted0\">\u00a0\u00a0<\/span><\/p>\n<p>4\/11\/23:\u00a0 \u00a0The contractor is continuing to work on areas of slippage and erosion, including the slope at the Frontera entrance and the large &#8220;slide&#8221; below the main access road near the bottom of the Friends St. path (covered in plastic sheeting for several weeks).\u00a0 Part of the road is blocked temporarily while work is ongoing, but the east side path is open all the way to the PCH overlook at the bottom of the canyon.<\/p>\n<p>4\/4\/23:\u00a0 RAP advises that a large sinkhole in the baseball field path is scheduled for repair and that the fencing blocking the pathway will be removed by Friday (4\/07\/23).\u00a0 Other repairs are planned and we are told contractors are waiting for the ground to dry in order to address other soil slippage. Damage at the Frontera entrance and along canyon slopes and trails remains a concern.<\/p>\n<p>3\/27\/23:\u00a0 RAP advises that the Maintenance contractor will be clearing the Park&#8217;s rain channels\/v-ditches (concrete channels) that run throughout the park to make sure they are clear of obstructions.\u00a0 Regarding the washout above the riparian area that is currently covered by plastic, BOE has advised RAP that they are waiting for the area to dry up enough to allow them to make the repair work.\u00a0 It is possible that they may start this work in about two weeks.\u00a0 The PCOC* will monitor.<\/p>\n<p>3\/23\/23:\u00a0 In January-March, relevant City agencies (RAP, BOE and\/or CD 11) were notified of damages from recent rains to the baseball field at the Recreation Center (sinkhole) and to trails in Potrero Canyon (soil slippage at Frontera entrance and other areas, resulting damage to trails, other sinkholes, slides, cracks and fissures).\u00a0 RAP advises that when the rains have stopped, damage assessment and geologic study will be undertaken by RAP Maintenance (baseball field sinkhole) and by BOE and\/or its landscape contractor (Potrero Canyon slippage and trail damage).\u00a0 The PCOC* will monitor.<\/p>\n<p><strong>*Note:<\/strong> <em>the prior PPCC Potrero Canyon Oversight Committee (PCOC) is no longer active as of July 2024; matters involving Potrero Canyon are regularly monitored by PPCC members.<\/em><\/p>\n<p><a href=\"https:\/\/pacpalicc.org\/index.php\/potrero-canyon\/\">Return to Potrero Canyon<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Potrero Canyon\u00a0 &#8212; Drainage and Soil Slippage Updates LEGEND: RAP \u2014 RECREATION &amp; PARKS DEPT. BOE \u2014 BUREAU OF ENGINEERING CD11 \u2014 OFFICE OF COUNCIL DISTRICT 11\/COUNCILWOMAN TRACI PARK Return to Potrero Canyon 6\/26\/25: \u00a0See entries for 6\/26\/25 and 1\/7\/25 on the\u00a0Landscaping page, for information about\u00a0 closure and reopening of the Park due to the [&hellip;]<\/p>\n","protected":false},"author":13,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-11716","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/pacpalicc.org\/index.php\/wp-json\/wp\/v2\/pages\/11716","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pacpalicc.org\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/pacpalicc.org\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/pacpalicc.org\/index.php\/wp-json\/wp\/v2\/users\/13"}],"replies":[{"embeddable":true,"href":"https:\/\/pacpalicc.org\/index.php\/wp-json\/wp\/v2\/comments?post=11716"}],"version-history":[{"count":0,"href":"https:\/\/pacpalicc.org\/index.php\/wp-json\/wp\/v2\/pages\/11716\/revisions"}],"wp:attachment":[{"href":"https:\/\/pacpalicc.org\/index.php\/wp-json\/wp\/v2\/media?parent=11716"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}