[{"_1":2,"_99":-5,"_100":-5},"loaderData",{"_3":4,"_26":27},"root",{"_5":6,"_17":10,"_18":19,"_20":21,"_22":10,"_23":-5,"_24":-5,"_25":10},"user",{"_7":8,"_9":10,"_11":10,"_12":-5,"_13":-5,"_14":15,"_16":-5},"roles",[],"isAuthenticated",false,"isPremium","planName","subscriptionStatus","featureFlags",{},"insightsBudget","isDevelopmentHost","userPreferences",{},"recaptchaSiteKey","6LcvOJcUAAAAAHsB-gPGfGktcRlKpH7OTIU_dMTD","isImpersonating","impersonation","affiliateStatus","isFreedomPortal","routes/v2/article/layout",{"_28":29,"_30":31},"notFound",true,"relatedArticles",[32,75,87],{"_33":34,"_35":36,"_37":38,"_39":40,"_41":42,"_43":44,"_45":46,"_47":48,"_49":50,"_51":52,"_53":54,"_55":56,"_57":58,"_59":60,"_61":62,"_63":64,"_65":66,"_67":68,"_69":70,"_71":68,"_72":73,"_74":73},"mediaId",6649246,"mediaKeyId","2521410-fa48cec1c73570772aafd880ca3082f5","parentId",2521410,"title","Consultants recommend anaerobic digestion plus thermal drying as preferred biosolids option for Carlisle plant","audioSeconds",1468,"startMs",136000,"endMs",1604000,"viewUrl","/Search/View?dp=1&key=2521410-fa48cec1c73570772aafd880ca3082f5&start=136&end=1604","thumbnailUrl","https://assets.pipeline.soar.com/2521410-fa48cec1c73570772aafd880ca3082f5/thumbnail_136000.jpg","articleUrl","/articles/6649246/Carlisle/Cumberland-County/Pennsylvania/Consultants-recommend-anaerobic-digestion-plus-thermal-drying-as-preferred-biosolids-option-for-Carlisle-plant","mediaUrl","https://secure.pipeline.soar.com/6649246-543e701c316adb39fe2dbc2406a5009a/orig.mp4?Expires=1771181834&Signature=LWnLa0EJvyFm8JZJu7vhJ4FvVjIl1Xoov4cGY4pzEMtwail8oUSt7V1WbQxlSAH3Es~fJudGRaBvAxpdYXIhLXXOGbG30JSZY~24RjJdBo69yJp79i5foShzzuaVM1j0frjACBwGJZOqeBnhn0-vaLG76JF3MnypHmxB2EAaQKCifOGGsY52oDx95GGVTL0eykiHK6po67X6hX7xocs-JFmW8s-hRrFo1LolDDX2HrsUkxvScBjDRn-ADxZc4EdCq~Rfdpxb7xAKhU85eWiJ~Y5X1mpNAG-51SAAzG2TLjAhSQQdXzC0kPBCoBi840S9sB92-GmJaHZVsnjZR9DFZw__&Key-Pair-Id=KUT5TJCACFTXG","author","Borough of Carlisle, PA","date","2025-03-06T20:38:34.45Z","article","At a March 5, 2025 workshop of the Carlisle Borough Council, consultants from Dannon Plumbing presented a study of options to replace the borough's nearly 40-year-old lime slurry stabilization system at the Carlisle Wastewater Treatment Plant and identified anaerobic digestion with thermal drying as their preferred alternative.

The consultants said the current lime stabilization process has been reliable but creates nuisance odors, recurring equipment failures and a large hauling demand: the process requires more than 7,000,000 gallons of Class B liquid biosolids to be hauled each year—about 1,200 tanker loads. \"The main goal for the study was to develop a plan that is affordable, cost effective, energy efficient and environmentally sound that will last you guys 25 years,\" Ben Briston, senior project manager with Dannon Plumbing, told council members.

The report evaluated four alternatives: continuing the current post-lime treatment; autothermal thermophilic aerobic digestion (ATAD); anaerobic digestion with thermal drying; and thermal drying with pyrolysis. Consultants summarized that ATAD can reduce solids by roughly half compared with current operations but is energy intensive; anaerobic digestion plus thermal drying can achieve large volume reductions (consultants cited up to roughly 90% reduction of the dewatered cake) and offers energy recovery via biogas; and pyrolysis (biochar production) also gives high volume reduction but is an emerging technology in the U.S.

Consultants presented a 20-year net-present-value comparison that placed the existing lime process as the least expensive in capital terms, alternatives two and three close to each other in lifecycle cost, and the pyrolysis option as the costliest. The presenter said prior cost estimates for the pyrolysis option previously shown to council have increased after conversations with equipment vendors.

The study team highlighted operational trade-offs. The anaerobic-digestion-plus-drying approach was recommended because it is a proven technology at other regional plants, can produce Class A biosolids, minimizes odor potential by enclosing digestion tanks and offers redundancy: \"If a piece of equipment such as that dryer is out of service, a Class B product could still be produced,\" Briston said. The consultants also noted they would plan site connections and space so a future technology such as pyrolysis could be added later if it becomes proven and cost-effective.

Council members asked about specific concerns. One member asked whether tanks and new buildings would be vulnerable to flooding; the consultant said equipment would be housed in buildings outside the mapped floodway and at slightly higher elevations. Several members asked about staffing and operations; the consultants said they expect existing plant staff could be retrained but that the borough will need a refined estimate of manpower and maintenance needs during design. Members also asked about the facility's ability to accept food-processing residuals and the potential for cogeneration from biogas; consultants said some industrial and food wastes can be co-digested and that biogas can provide energy recovery, potentially offsetting plant operations.

Several council members raised concerns about per- and polyfluoroalkyl substances (PFAS). The consultants said current evidence does not show a technology that reliably eliminates PFAS in all end uses and that pyrolysis biochar studies are evolving; they cautioned the borough would not want to be an early adopter until the technology is better proven and regulated.

No formal council vote on a construction contract or funding occurred at the workshop; the presentation concluded with the consultant's recommendation and a request that staff refine design, staffing and cost estimates and return to council with project-level recommendations. The report delivered to the borough includes technical memoranda on regulatory context, market outlets and a regional market survey.

The consultants named several peer facilities visited during the study, including Hanover Wastewater Treatment Plant and Lancaster-area authorities that use anaerobic digestion and drying technologies. The presentation noted local ATAD installations at the Lower Allen and Middletown wastewater treatment plants as examples.","mediaType","Video","parentTitle","March Borough Council Workshop Meeting","oneSentenceSummary","At a March 5, 2025 workshop of the Carlisle Borough Council, consultants from Dannon Plumbing presented a study of options to replace the borough's nearly 40-year-old lime slurry stabilization system at the Carlisle Wastewater Treatment Plant and identified anaerobic digestion with thermal drying as their preferred alternative.","taxTitle","Carlisle, Cumberland County, Pennsylvania","taxId",57379,"location","headline","","shortSummary",{"_33":76,"_35":36,"_37":38,"_39":77,"_41":78,"_43":79,"_45":80,"_47":81,"_49":82,"_51":83,"_53":84,"_55":56,"_57":58,"_59":85,"_61":62,"_63":64,"_65":86,"_67":68,"_69":70,"_71":68,"_72":73,"_74":73},6649236,"Council approves Feb. 5, 2025 workshop meeting minutes",22,109000,131000,"/Search/View?dp=1&key=2521410-fa48cec1c73570772aafd880ca3082f5&start=109&end=131","https://assets.pipeline.soar.com/2521410-fa48cec1c73570772aafd880ca3082f5/thumbnail_109000.jpg","/articles/6649236/Carlisle/Cumberland-County/Pennsylvania/Council-approves-Feb-5-2025-workshop-meeting-minutes","https://secure.pipeline.soar.com/6649236-c80fe6b58a14816fc29e9de1a4c9bc6b/orig.mp4?Expires=1771181834&Signature=E9Ms~34jChbafTpsK0w5KOWkvZS0p6JJfeprr829NTGRRI5X9gL5H~jaFkEQkzGi-kkjLKtFbnlITOkIChTCCmHtZO77emChiXoUM0ie7nHN7i9IHIYNEEtdNxqbebEWFQN96XWlNsp5EL8mxDkFgauC5eUs0LOjpQy-QTMrjgugmiqUvPJ7Mgf8BMWgLPcduzMWCkuPhS6iS4ShfxC2peQWs6LoBmHm4ofKUiYYdobaivCWCcy5MCZr8cUwi39v05LJWgMykNjgMrG5j6erqay8H-pwRfywzbrxeH2s~Zx87GfCRx6RAkbehjF~ygu6vf0nblM9DuDASPqRlXoWYw__&Key-Pair-Id=KUT5TJCACFTXG","At the March 5, 2025 Carlisle Borough Council workshop, the council reviewed and approved the Feb. 5, 2025 workshop meeting minutes.

The deputy mayor moved to approve the minutes; Councillor Stuve seconded. The council voted by voice; the chair called for those in favor to signify by saying \"Aye,\" and then called the motion carried.

No substantive discussion or changes to the minutes were recorded during the workshop.","At the March 5, 2025 Carlisle Borough Council workshop, the council approved the minutes of the Feb. 5, 2025 workshop meeting by voice vote after a motion by the deputy mayor and a second from Councillor Stuve.",{"_33":88,"_35":36,"_37":38,"_39":89,"_41":90,"_43":91,"_45":92,"_47":93,"_49":94,"_51":95,"_53":96,"_55":56,"_57":58,"_59":97,"_61":62,"_63":64,"_65":98,"_67":68,"_69":70,"_71":68,"_72":73,"_74":73},6649241,"Public works recommends striping pilot for Bedford-East traffic calming; SS4A grant could cover majority of cost",1539,2584000,4123000,"/Search/View?dp=1&key=2521410-fa48cec1c73570772aafd880ca3082f5&start=2584&end=4123","https://assets.pipeline.soar.com/2521410-fa48cec1c73570772aafd880ca3082f5/thumbnail_2584000.jpg","/articles/6649241/Carlisle/Cumberland-County/Pennsylvania/Public-works-recommends-striping-pilot-for-Bedford-East-traffic-calming-SS4A-grant-could-cover-majority-of-cost","https://secure.pipeline.soar.com/6649241-0192892029795dfa37c20c3e65f84c5f/orig.mp4?Expires=1771181834&Signature=XLoDL-emDUpIXAJEF543jczqUHbnnd8IUfAI2iIST3iBJSxZ8nuEEzjP39fOQyjqrF-rCxCpoq8RtGImGPi9RBWUX8NnjvUmDjop-nKvYnUwS71~DYJeTXBZVWCfUeK3RopHVwRlgDOv2ZtJTR8B6osZQWYYjsi~QqChmTw9~i7qhiJ1Yo5PUoSEKrbwfA79dOImPftV0Ua4JZ5oLbT129qAY9JIu6F2pUQ-pDWOnTvx8vC2aFOdtXywmxqx1ZO9qKAtxKz~8fo7FsDW-o-IuIbEN7zddSiRn9zhbJsAcIBuu~ibWWvR3fIdoyy8Qc6DY3kZ7vZs1u1fHVxaKCzOfA__&Key-Pair-Id=KUT5TJCACFTXG","At a March 5, 2025 Carlisle Borough Council workshop, public works staff presented a menu of traffic-calming options for the Bedford and East corridors and recommended moving forward with a striping-only pilot to test parking-protected bike lanes and lane reductions.

Jeff (public works) told council the department developed three implementation options after outreach to neighbors and engineering review: a striping-only approach, a quick-build option using temporary physical elements (flexible delineators, bolt-down curb extensions), and a full permanent reconstruction. \"Our recommendation is that we go move forward with option 1,\" Jeff said, citing the striping option as the lowest financial commitment and the best way to pilot several configurations before investing in permanent changes.

Staff said the borough's application to a multi-municipal SS4A (Safe Streets and Roads for All) grant—spearheaded by Lower Paxton Township—would only cover striping-only or quick-build work, not the full permanent reconstruction. The staff presentation included estimated costs: striping-only at roughly $295,000–$300,000 total with the borough's 20% match around $60,000; a quick-design (temporary physical elements) estimate of about $380,000. Jeff noted those construction estimates exclude ongoing operational costs such as additional street sweeping, snow removal or procurement of different maintenance equipment.

Council members asked whether a hybrid approach could be used—starting with striping and adding flexible delineators at critical points. Jeff and staff said the striping-only approach could be supplemented with bolt-down flexible delineators at targeted locations but that the borough would need to address maintenance and winter removal to protect plows and avoid damage to the pavement. Staff also noted temporary rubber speed bumps and bolt-down elements can be moved and reused in different pilot locations.

Several council members expressed support for starting with paint while strategically deploying quick-build elements at high-conflict intersections. Staff said design would proceed if council approves an option; staff estimated design documents could be ready in about a year, with construction timed to avoid overlap with unrelated roadwork (staff said the primary road project would not complete before December of the year cited). The SS4A grant structure is 80/20; staff said striping would be eligible and the borough's share would be the smaller portion under that match.

No formal council action to allocate funds or authorize construction was taken at the workshop; staff will present a formal recommendation and a project resolution at a future council meeting if council directs staff to proceed with design and grant agreements.","Carlisle public works presented three traffic-calming approaches for the Bedford and East corridors and recommended a striping-only pilot (option 1) because it is the lowest-cost pilot and eligible for SS4A grant funds; council members discussed hybrid quick-build elements and operational impacts such as street sweeping and snow removal.","actionData","errors"]

Article not found

Consultants recommend anaerobic digestion plus thermal drying as preferred biosolids option for Carlisle plant

Council approves Feb. 5, 2025 workshop meeting minutes

Public works recommends striping pilot for Bedford-East traffic calming; SS4A grant could cover majority of cost