We need answer user's legal procurement protest plan. Need analyze carefully. Need produce final ordered protest plan. Need ensure dates. Let's parse facts and law.

Facts:
- Award notice to Silverline Wednesday Sept 1, 2027. Selected Atlas. 
- Before bids due, solicitation openly required 5 years polar-region experience. Silverline had 3 but submitted without protest. Now argues unnecessarily restrictive. Waived under rule 1.
- Debriefing held Saturday Sept 4. First time disclosed: (1) credited Atlas with sensor-resolution score based on model not identified in proposal; (2) treated Silverline's subcontractor experience as zero despite clause; (3) Atlas evaluated price $1.8M higher but selected based on disputed technical scoring. Written slides same day. Today Tuesday Sept 7. Management proposes first filing agency protest Sept 10 and waiting for agency answer before Board. No written commitment to suspend.
- Atlas transition Sept 13. Silverline spent $620k proposal costs, estimates transition makes corrective competition harder; proposal costs alone do not establish irreparable harm.

Law:
1. Protest based on apparent solicitation defect filed before bid deadline; bidder submits without timely protesting obvious term waives ground.
2. Post-award protest to Procurement Review Board within ten calendar days after protester knew or should have known basis. Day of knowledge excluded.
3. Required debriefing delays knowledge of matters first disclosed there. It does not revive apparent solicitation defect.
4. Award performance automatically stayed only if Board receives protest by later of: (a) ten calendar days after award notice; or (b) five calendar days after required debriefing. Triggering day excluded.
5. Timely merits protest after auto-stay deadline may proceed, but performance continues unless Board/court discretionary relief.
6. Agency-level protest does not trigger Board auto stay and does not toll either Board deadline unless agency issues written suspension before Board deadline expires.
7. Court may injunction based on likely success, irreparable harm, balance, public interest. No automatic stay.
8. Protest must state each ground, supporting facts then known, requested relief, and any request for protected access to procurement records. Later supplementation permitted for facts first learned from agency report.
9. Calendar days include weekends. If deadline falls on day Board closed, next open day. Board open every date relevant here.

Need answer: ordered protest plan addressing bullets:
- waived solicitation ground
- date Silverline knew post-award grounds
- ten-calendar-day Board merits deadline
- two alternative automatic-stay calculations and which date controls
- last filing date that preserves automatic stay
- why proposed agency-first sequence does or does not protect stay
- grounds to include in initial Board protest
- role protected-record access and supplementation
- court relief if automatic stay lost
- exact filing sequence Silverline should use to preserve strongest procedural position.

Need compute dates.

Award notice Sept 1. For auto-stay: (a) ten calendar days after award notice, triggering day excluded. Need count. If excluded Sept 1, ten calendar days after: Sept 2 day1, 3 day2, 4 day3, 5 day4, 6 day5, 7 day6, 8 day7, 9 day8, 10 day9, 11 day10. So by Sunday Sept 11, 2027. Board open, so due Sept 11.
(b) five calendar days after required debriefing. Debriefing Sept 4, triggering day excluded. Sept 5 day1, 6 day2, 7 day3, 8 day4, 9 day5. By Tuesday Sept 9, 2027. Board open.
Later of Sept 11 and Sept 9 is Sept 11. So last filing date preserving automatic stay is Sunday Sept 11, 2027. But wait: If protest must be timely merits within 10 calendar days after knowledge (post-award grounds known Sept 4; excluded) then Sept 5-14? Let's count. Ten calendar days after knowledge: if knowledge Sept 4, excluded; day1 Sept5, day2 6, day3 7, day4 8, day5 9, day6 10, day7 11, day8 12, day9 13, day10 14. So merits deadline Wednesday Sept 14, 2027. Need confirm: The post-award grounds first disclosed at debriefing Sept 4, written same day. Under rule 3 required debriefing delays knowledge of matters first disclosed there. So date knew post-award grounds is Sept 4, 2027. Unless should have known? The first-time disclosure means actual/constructive knowledge then. Yes. So 10-calendar-day Board merits deadline = Sept 14, 2027.

Need maybe automatic stay calculation: There is nuance: auto stay if Board receives protest by later of (a) ten calendar days after award notice; or (b) five calendar days after required debriefing. But is it "by" the later date? Yes. Since later Sept 11. So file by Sept 11. But if file Sept 11 (Sunday) Board open, automatic stay. Could file today Sept 7 to be safe; exact filing sequence? Strongest: file Board protest today or no later than Sept 11, include grounds known then, request automatic stay and protected records. Possibly also file agency protest? Management proposes agency protest Sept 10 and wait. That does not protect stay because no Board filing by Sept 11; agency protest doesn't toll Board deadlines absent written suspension. If agency protest filed Sept 10, Board deadlines still Sept 11 (auto) and Sept 14 (merits). If wait to Board after agency answer, likely after Sept 11/14, lose automatic stay and possibly merits timeliness if after Sept 14. Even if agency protest filed Sept 10 before auto-stay deadline, it does not trigger stay or toll. To preserve stay, must file with Board by Sept 11. Could also file agency protest concurrently if desired, but not wait. But agency protest might be useful? Need exact sequence to preserve strongest procedural position. Since Board protest required by Sept 11 to auto stay and by Sept 14 for merits. It should include all non-waived grounds known: scoring error based on unidentified sensor model; zero subcontractor experience contrary to clause; maybe selection based on disputed technical scoring over price? The price being higher is not itself a ground unless scoring errors make selection unreasonable? Need state facts then known: Atlas evaluated price $1.8M higher, but selected based on disputed technical scoring. Include as context/claim that if technical scoring errors corrected, price advantage and award should be set aside. Also maybe protest improper evaluation of technical scores. Could include apparent solicitation defect? Rule 1 says waived. So don't include as substantive? The assignment says addressing waived solicitation ground: explain waived because required before bid deadline, submitted without protest; rule 3 doesn't revive. Could mention not included in initial Board protest, or include only as background? Better not include as ground. Could note if included it would be rejected; don't waste. Maybe if the debriefing disclosed that requirement applied differently? No, it was apparent. So exclude.

Protected-record access: In initial Board protest request access to procurement records (evaluation reports, score sheets, proposal documents, debriefing materials, etc.). Later supplementation permitted for facts first learned from agency report. So initial protest states known facts and requests protected access; after receiving records, supplement with newly learned facts, perhaps new grounds? Rule says later supplementation permitted for facts first learned from agency report. Could also file supplemental protest. Need ensure Board deadline for supplementation? Rule doesn't specify; but likely before Board decides? We can say file promptly after receipt, within any Board time limit, and identify that facts were first learned from report. The initial filing by Sept 11 preserves procedural posture; supplementation after protected records can add facts, not necessarily new independent grounds? It says facts first learned from agency report. Could support existing grounds or identify additional facts. Need be precise.

Court relief if automatic stay lost: If Board filing after Sept 11 but by Sept 14, merits proceed but no automatic stay; can seek Board discretionary stay or file court injunction. If after Sept 14, protest untimely? Rule 5: timely merits protest filed after automatic-stay deadline may proceed; performance continues unless discretionary. It doesn't explicitly state what if after merits deadline? Rule 2: must file within 10 days; after maybe barred unless discretionary? Court might still? But likely no merits protest. Need plan: If lose auto stay, immediately seek stay from Board as discretionary and/or court TRO/PI. Court standard: likely success, irreparable harm, balance harms, public interest; no automatic. Need argue irreparable harm: transition work starting Sept 13, if proceeds, may make corrective competition harder? But proposal costs alone not enough. Need be careful: user says estimates transition will make meaningful corrective competition harder, but proposal costs alone do not establish irreparable harm. We need discuss how to plead: potential loss of unique capability? Market disruption? Irreparable if award to Atlas with nonconforming evaluation and transition begins, perhaps because it would entrench noncompliant awardee, undermine integrity, cause competitive injury not compensable by damages? But proposal costs alone not enough. Need note court may deny if only monetary loss; need show specific noncompensable harm, e.g., transition work creates de facto performance or reliance, loss of public funds, ongoing procurement harm, or if Atlas lacks qualifications? But facts not. Need state if automatic stay lost, court relief possible but not guaranteed; file ex parte? Need exact sequence if lost: file Board protest (maybe late for stay) then simultaneously or immediately before transition, seek court TRO/PI with affidavit; request expedited; argue likely success based on scoring errors, irreparable harm from transition/entrenchment, public interest in fair competition. But if no stay and transition begins Sept 13, need act before/at Sept 13.

Exact filing sequence: Today Sept 7, management wants agency first Sept 10. We should advise: Do not delay. File Board protest by Monday Sept 8? Need consider practical: Today Tuesday Sept 7. To preserve strongest position, file Board protest immediately, ideally today Sept 7 (or by Sept 8 to allow processing) and no later than Sunday Sept 11. Include all grounds known as of Sept 7 (which are known since Sept 4), requested relief: set aside award, direct reevaluation/resolicitation? Request automatic stay under rule 4, request protected access to procurement records, request debriefing? Already had debriefing. Need maybe request discretionary stay too. File any agency protest? If management wants, can file agency protest concurrently, but not rely on it. However, could agency protest filed Sept 10 before Board deadline cause issue? If agency protest filed Sept 10 but no Board filing until after answer, lose. Could file both: Board by Sept 11; agency protest optional. Does agency protest toll Board deadline if written suspension? None. If agency later suspends after Board deadline? Rule says does not toll unless agency issues written suspension before Board deadline expires. So if written suspension after Sept 11, no tolling for auto? Maybe if before? Management no written commitment. Could seek agency written suspension before Sept 11. But agency protest Sept 10 may be too late to get written suspension? If agency issues before Sept 11 could toll? But not automatic. Strongest is Board. Should we recommend not filing agency first, but perhaps file agency protest simultaneously or after to exhaust? The question: Management proposes first filing an agency protest on September 10 and waiting for agency's answer before going to the Board. Need explain why does not protect stay. Exact filing sequence: File Board protest no later than Sept 11, preferably today Sept 7; include request for automatic stay and records; if desired, concurrently file agency protest or notify agency, but do not wait; after receiving protected records, file supplement; if no automatic stay (e.g., missed) or agency performs before stay, seek court TRO/PI before transition Sept 13. Also, if Board protest filed by Sept 11, automatic stay applies; no need for court. If Board protest filed Sept 12-14, timely merits but no auto stay; seek Board discretionary stay and court injunction before Sept 13. If after Sept 14, likely merits time-barred; only discretionary/extraordinary relief; court may not grant.

Need ensure date calculations with weekdays. Need maybe mention 2027 calendar: Sept 1 Wednesday, Sept 4 Saturday, Sept 7 Tuesday, Sept 9 Thursday? Wait Sept 2027: If Sept 1 Wednesday, then Sept 4 Saturday, Sept 5 Sunday, Sept 6 Monday, Sept 7 Tuesday, Sept 8 Wednesday, Sept 9 Thursday, Sept 10 Friday, Sept 11 Saturday, Sept 12 Sunday, Sept 13 Monday, Sept 14 Tuesday. Wait earlier I called Sept 9 Tuesday? Mist. Let's verify: If Sept 1 Wed, then Sept 2 Thu, 3 Fri, 4 Sat, 5 Sun, 6 Mon, 7 Tue, 8 Wed, 9 Thu, 10 Fri, 11 Sat, 12 Sun, 13 Mon, 14 Tue. Yes. I earlier mislabeled Sept 9 Tuesday and Sept 11 Sunday. Correct: auto stay deadlines: 10 days after Sept 1 = Sept 11 Saturday. 5 days after Sept 4 = Sept 9 Thursday. Later is Sept 11 Saturday. Board open every date, so last filing date is Saturday Sept 11. But can a board receive filing on Saturday? It says Board open on every date relevant, so yes. If not open, next open. So last date Saturday, September 11, 2027. Merits deadline 10 days after Sept 4 = Sept 14 Tuesday. Good.

Need maybe discuss if filing on Sunday? No, Sept 5 is Sunday but not deadline. The day of knowledge excluded; count calendar days including weekends. Good.

Potential nuance: "post-award protest to the Procurement Review Board must be filed within ten calendar days after the protester knew or should have known the basis." For matters first disclosed in required debriefing, knowledge delayed. But for the award itself? Did Silverline know the basis for award on Sept 1? It knew Atlas selected, but not scoring errors. The post-award grounds (scoring, subcontractor zero, price higher) first disclosed Sept 4. So 10 days after Sept 4 = Sept 14. What about apparent solicitation defect? It was known before bid deadline; waived. Not relevant.

Could there be a ground known at award notice: e.g., award to Atlas despite price higher? It knew price higher? It says Authority first disclosed at debriefing that Atlas's evaluated price was $1.8M higher but selected based on disputed technical scoring. So first disclosed then. If Silverline should have known earlier from proposal? Not relevant. So knowledge date Sept 4.

Auto stay: Rule 4 says automatic stay only if Board receives protest by later of (a) 10 calendar days after award notice; or (b) 5 calendar days after required debriefing. Triggering day excluded. For debriefing trigger: required debriefing held Sept 4. If written slides same day. Five days after = Sept 9. For award notice: Sept 11. Later = Sept 11. So if Board protest received by Sept 11, performance automatically stayed. If not, no automatic. Note if protest filed with Board Sept 11 (Saturday) but maybe not "received" until next business day? Rule says Board open every date relevant, so assume received same day. To be safe file early. If electronic receipt, timestamp. Need mention ensure receipt before deadline.

What if Board merits deadline Sept 14 but auto stay deadline Sept 11; filing Sept 12-14 is timely on merits but no automatic stay. Rule 5: performance continues unless discretionary. Good.

Need address "waived solicitation ground" in plan: It is waived. Under rule 1, apparent solicitation defect must be protested before bid deadline; Silverline submitted without protesting. Under rule 3, required debriefing does not revive apparent solicitation defect. So the five-year polar-region experience requirement is not a viable protest ground. It should not be included as a ground in the Board protest. If management wants, can mention as non-asserted or background? I'd say omit; if mentioned, label not asserted or waive. But question asks address; plan says exclude. If included erroneously, may undermine credibility? Not necessarily. But best to omit.

Grounds to include in initial Board protest:
1. Scoring/rating error: Authority credited Atlas with sensor-resolution score based on a model not identified in proposal. This is unsupported by proposal, improper evaluation, not in accordance with solicitation. Need include facts: debriefing slides Sept 4 first disclosed; model not in proposal; sensor-resolution score impacted selection. Request set aside/reevaluation.
2. Improper treatment of subcontractor experience: Solicitation said relevant subcontractor experience "will be considered," yet Silverline's was worth zero. Ground: evaluation contrary to solicitation, arbitrary/capricious? Need include facts then known: clause language, Silverline's subcontractor experience (maybe specifics? We can state need to attach proposal pages, debriefing slides). Request reevaluation.
3. Selection based on disputed technical scoring despite higher evaluated price: Include as part of reasonableness/overall evaluation ground: After correcting scoring errors, Atlas's technical advantage disappears or is overstated; Atlas evaluated price $1.8M higher, so Silverline should have been lowest/best value or award unsupported. This may be a standalone ground: selection of Atlas is not best value and is based on erroneous technical scores. Need phrase carefully: price difference alone not a ground unless scoring erroneous, but combined. Could include "if technical scoring errors are corrected, the selection of Atlas over a lower-priced offeror is unsupported." Request set aside, direct reevaluation or resolicitation. Maybe also request correction of debriefing? Not necessary.

Could there be a ground of "improper debriefing" because it first disclosed? No, required debriefing delayed knowledge; not ground. Could include request for full debriefing? Already. Could include "protest award is based on erroneous evaluation and not best value".

Need maybe include "protected access to procurement records" request: evaluation report, score sheets, individual rater notes, Atlas proposal and the sensor model at issue (if any), Silverline proposal evaluation, debriefing slides, price evaluation, communications. State request for confidential/proprietary access under protective order? Rule says any request for protected access to procurement records. So ask Board to permit Silverline access to non-public procurement records necessary to prosecute protest, under confidentiality protections. Later supplementation permitted for facts first learned from agency report. So after receiving report, supplement with facts, e.g., identification of model? If model not in proposal, maybe report will confirm. If report reveals new facts, can supplement. Initial protest must state facts then known: e.g., slides said model not identified; we don't know which model? We can state as known. Request records to verify.

Court relief if automatic stay lost:
- If Board receives protest by Sept 11, automatic stay; court not necessary unless Board denies? Actually automatic stay under Board. If Board protest by Sept 11, performance automatically stayed; maybe no court needed. But if Board later lifts stay? Not in facts. If lost (e.g., missed or Board rejects automatic?), file court. Need plan: If by some event no stay, and before Sept 13 transition, file emergency motion for TRO/PI in appropriate court. Standard: (1) likelihood of success on merits (scoring errors, solicitation clause violation, unsupported award); (2) irreparable harm: not just $620k proposal costs; must show transition work will cause noncompensable harm (e.g., entrenchment, integration, loss of chance to compete, public funds wasted, ongoing procurement harm); maybe use affidavits, expert; (3) balance of harms: Silverline harm of losing procurement/integrity vs Atlas minimal if stayed; (4) public interest: fair competition, proper use of public funds. No automatic stay; court must find. Need mention file Board protest and court complaint together or after; preserve jurisdiction? Under rule, court may issue injunction. Need maybe seek expedited hearing. If transition begins Sept 13, file before then. If Board protest filed timely but no stay? Actually auto stay if timely. But if Board decides not to stay? It says performance automatically stayed only if Board receives protest by later date. So if timely, automatic; court only if stay not in effect (e.g., filing late, or court to protect if Board denies? Maybe automatic stay could be dissolved by Board? Not given). We can state if automatic stay is lost or not obtained, seek court relief.

Exact filing sequence:
Option A (recommended): 
1. Immediately (today Tue Sept 7, or no later than Wednesday Sept 8 to account for logistics) prepare and file a Board protest with the Procurement Review Board. Ensure receipt before 11:59 p.m. local? no need. Include:
   - Protester identification and contract.
   - Grounds: (i) sensor-resolution scoring based on unidentified model; (ii) zero subcontractor experience contrary to clause; (iii) award unsupported/best value due to disputed technical scoring and higher price. (Omit waived polar experience requirement.)
   - Facts then known (award notice Sept 1, debriefing Sept 4, slides, clause, price difference, transition date Sept 13, costs). 
   - Requested relief: set aside award; direct reevaluation/resolicitation; automatic stay of performance; stay pending decision; protected access to procurement records; costs? maybe.
   - Request protected access to records under rule 8.
2. Do not file only an agency protest on Sept 10. If management wants agency involvement, file a parallel agency protest on Sept 10 (or concurrently) expressly preserving all grounds and asking the agency to suspend performance in writing before Sept 11, but do not rely on it. However, if agency written suspension issued before Sept 11, could toll? Rule 6: agency-level protest does not trigger Board auto stay and does not toll either Board deadline unless agency issues written suspension before Board deadline expires. Wait "toll either Board deadline" means if agency issues written suspension before Board deadline expires, it tolls Board deadlines? Need parse: Agency-level protest does not trigger Board's automatic stay and does not toll either Board deadline unless the agency issues a written suspension before the Board deadline expires. So if agency issues written suspension before Board deadline expires, it tolls Board deadlines. Does "either Board deadline" mean auto-stay and merits? It says either Board deadline (probably merits and stay? maybe). So if agency written suspension before Sept 11, maybe deadlines tolled. But no written commitment. Could Silverline seek agency written suspension by Sept 11? Management proposes agency protest Sept 10; could ask agency to suspend in writing before Sept 11. If granted, maybe tolls. But not reliable. Strongest: Board by Sept 11. If Board filed by Sept 11, no need for agency. But if also file agency, ensure it doesn't create issue? It might be allowed. But if agency issues written suspension after Board filing, could further toll merits? Not needed if Board filed. However, if Board protest filed Sept 11, merits deadline? Filing within Sept 14 anyway. Auto stay preserved. No need to wait.

Need maybe mention if the Board protest is filed after Sept 11 but before Sept 14, still timely merits but no automatic stay; then if agency written suspension issued before Sept 11? If not filed Board by Sept 11, agency written suspension before Sept 11 might toll auto-stay deadline? Hmm rule 6: agency-level protest does not trigger Board auto stay and does not toll either Board deadline unless agency issues written suspension before Board deadline expires. If no Board filing by Sept 11, but agency issues written suspension on Sept 10, does that toll the automatic-stay deadline so Board filing later can get automatic stay? It says does not toll either Board deadline unless written suspension before Board deadline expires. Could be yes: if agency suspends before Sept 11, the Board auto-stay deadline is tolled? But "automatic stay" triggered only if Board receives protest by later of dates; tolling maybe extends? Not clear. But management's plan: agency protest Sept 10, wait. If agency suspends before Sept 11, might toll Board deadlines; but no written commitment. We should say it could only protect if agency actually issues written suspension before Sept 11 and if tolling applies; but no guarantee and not automatic stay. The safest is Board.

Need consider if filing agency protest on Sept 10 could be considered a "protest" that delays knowledge? No. Rule 6 explicit.

Need maybe discuss "Board is open on every date relevant". So deadlines fall on weekend? Merits deadline Sept 14 Tuesday, auto-stay Sept 11 Saturday (open), debriefing 5-day Sept 9 Thursday. No extension.

Need maybe address "Today is Tuesday, September 7." So we need plan with dates relative to today:
- Today Sept 7: file Board protest immediately to secure stay and timely merits. Deadline for auto stay not yet until Sept 11, but early filing ensures receipt and allows supplement. 
- Sept 8-11: if not filed, can still file by Sept 11. But if agency protest on Sept 10, do not wait. 
- Sept 11: last date for auto stay. 
- Sept 13: transition begins; if no stay, seek court before then.
- Sept 14: last date for merits. If missed, likely time-barred; maybe only discretionary.

Need maybe mention "date Silverline knew the post-award grounds": Could argue actual knowledge on Sept 4 at debriefing; written slides same day. The required debriefing delays knowledge of matters first disclosed there; thus knowledge date is Sept 4, not Sept 1 or earlier. The "should have known" does not pull back because not disclosed until debriefing. So 10-day merits period runs Sept 5 through Sept 14. Good.

Need maybe mention "the post-award grounds" includes price being higher? The debriefing disclosed price difference. If Silverline should have known price from its own proposal? It says first time Authority disclosed that Atlas's evaluated price was $1.8 million higher. It may have known its own price but not Atlas's evaluated price? But facts say first disclosed. So Sept 4.

Need maybe mention "apparent solicitation defect" known before bids; Silverline submitted; waived. The fact that debriefing did not discuss it doesn't revive. So no.

Need maybe include "protest must state each ground, supporting facts then known, requested relief, and any request for protected access". So initial Board protest must include all three grounds known as of Sept 7, not wait for records. Facts then known: from debriefing slides. Include copies of debriefing slides, solicitation clause, proposal excerpts, award notice. If some facts unknown (exact model, score details), request records and supplement later.

Need maybe discuss "supplementation" for facts first learned from agency report. If the Board's protected record access yields agency report or records, Silverline can supplement initial protest with new facts. Need ensure not to wait to state initial grounds. Rule 8 allows later supplementation, but initial must state each ground. So do not file a bare protest and wait. File full protest with known facts and records request; then supplement after receiving records. If supplementation reveals new ground not known before? Rule says permitted for facts first learned from agency report. Could be new facts supporting a ground or perhaps new ground if first learned? We can phrase: "Supplement promptly, identify the record and date first learned, and tie it to a ground; do not use supplementation as the first notice of a ground that was known earlier." That is a strong procedural position.

Need maybe mention "protected record access" could be a precondition? The protest must request it. If Board denies? Could seek review? Not in rules. We can say request at filing; if necessary, file separate motion. Use confidentiality/protective order for Atlas proprietary info.

Need maybe mention "court relief if automatic stay lost" includes filing in court does not create automatic stay, so if no Board stay, performance may continue unless injunction issued. Need emphasize urgency before Sept 13 transition. Court can issue TRO/PI; need meet standard. Proposal costs alone not enough; need affidavits showing transition will make corrective competition harder in nonmonetary way. But user says estimates transition will make meaningful corrective competition harder, but proposal costs alone do not establish irreparable harm. We need be careful not to overstate. We can say plead irreparable harm as loss of a fair procurement opportunity and ongoing performance of an improperly awarded contract, especially transition work beginning Sept 13; support with evidence that transition will create reliance, entrench Atlas, and make any successful protest less than meaningful. But acknowledge $620k is compensable and not sufficient. If court finds only compensable costs, may deny. Need maybe mention public interest and balance. If likely success strong, court may be more willing.

Need maybe discuss if automatic stay lost but Board merits protest timely (Sept 12-14), can ask Board discretionary relief. Rule 5 says performance continues unless Board or court grants discretionary relief. So first seek Board stay (perhaps with motion) and court simultaneously. Board may have discretion. Need mention if protest filed after Sept 14, not timely; court may still consider equitable tolling? Not in facts. But plan to avoid.

Need maybe mention "last filing date that preserves automatic stay" = Saturday, Sept 11, 2027. Need maybe say "received" not just mailed; if electronic, timestamp; if mail, account for receipt. Board open every date relevant. If filing on Sept 11 after hours? Need ensure before close. Could say no later than Board's cutoff on Sept 11. But rule doesn't specify time. Use "by end of day".

Need maybe mention "two alternative automatic-stay calculations and which date controls":
- Award-notice based: 10 days after Wed Sept 1, exclude Sept 1: Thu 2 (1), Fri 3 (2), Sat 4 (3), Sun 5 (4), Mon 6 (5), Tue 7 (6), Wed 8 (7), Thu 9 (8), Fri 10 (9), Sat 11 (10). Deadline Sat Sept 11.
- Debriefing-based: 5 days after Sat Sept 4, exclude Sept 4: Sun 5 (1), Mon 6 (2), Tue 7 (3), Wed 8 (4), Thu 9 (5). Deadline Thu Sept 9.
- Later controls: Sept 11. (Because later of two). Thus last date to preserve automatic stay is Sept 11. If filed Sept 12, no automatic stay even though merits deadline Sept 14.

Need maybe mention "ten-calendar-day Board merits deadline": 10 days after knowledge Sept 4: Sun 5 (1), Mon 6 (2), Tue 7 (3), Wed 8 (4), Thu 9 (5), Fri 10 (6), Sat 11 (7), Sun 12 (8), Mon 13 (9), Tue 14 (10). Deadline Tue Sept 14. If filed by Sept 14, merits timely. If filed Sept 11, both auto stay and merits preserved.

Need maybe consider if "day of knowledge excluded" means if knowledge occurred at a particular time, the following day is day 1? We use standard. Good.

Need maybe consider "required debriefing delays knowledge of matters first disclosed there". If debriefing held Saturday Sept 4, maybe written slides same day. Knowledge date Sept 4. But if the debriefing itself is required, perhaps the five-calendar-day auto-stay calculation uses debriefing date not knowledge. Yes.

Need maybe consider "Award notice on Wednesday, September 1, 2027". Is award notice the date known? Yes. 10 days after award notice. If notice given to Silverline Sept 1. Good.

Need maybe consider "Board open on every date relevant here". So no weekend extension. But if deadline falls on Saturday and Board open, no extension. Good.

Need maybe mention "calendar days include weekends". We should show count including weekends.

Need maybe discuss "The Protest That Keeps the Stay" maybe expects concise but thorough. Need final ordered plan. Could structure with headings matching bullets. Maybe use numbered ordered plan. Need maybe include a table of dates. Need ensure final answer is not too terse. Desired oververbosity 9. So thorough.

Need maybe include a "recommended action today" at top. Then detailed analysis.

Potential issue: "A post-award protest to the Procurement Review Board must be filed within ten calendar days after the protester knew or should have known the basis." The "basis" could mean each basis. For the scoring ground, knowledge Sept 4. For the solicitation ground, knew before bid deadline, waived. For price difference, first disclosed Sept 4. So merits deadline for all post-award grounds is Sept 14. Good.

Potential nuance: If a required debriefing delays knowledge of matters first disclosed there, does it delay knowledge for all purposes, including the 10-day merits deadline? Yes. So if matter first disclosed at debriefing Sept 4, knowledge date is Sept 4. If it was also apparent? The solicitation defect not revived. Good.

Potential nuance: The automatic stay deadline (b) five calendar days after required debriefing. Does "required debriefing" date mean the date of the debriefing or date of written debriefing? It says held on Saturday Sept 4, written slides same day. Use Sept 4. If written later, maybe date written? Not here.

Potential nuance: "later of: (a) ten calendar days after award notice; or (b) five calendar days after required debriefing." The later date is Sept 11. But what if debriefing occurred after award notice; the five days after debriefing is earlier than 10 days after award. Why include later? Because if debriefing after 10 days, b could be later. Here a controls. Good.

Potential nuance: "A timely merits protest filed after the automatic-stay deadline may proceed, but performance continues unless the Board or a court grants discretionary relief." So if file Sept 12, 13, or 14, it's timely merits but no automatic stay. Since transition starts Sept 13, if no stay, need court. But if file Sept 11, automatic stay prevents transition. Good.

Potential nuance: "Agency-level protest does not trigger the Board's automatic stay and does not toll either Board deadline unless the agency issues a written suspension before the Board deadline expires." Management's plan: file agency Sept 10, wait. If agency answer after Sept 11/14, no. If agency issues written suspension before Sept 11, maybe tolls. But no written commitment. Even if agency suspends, it doesn't trigger automatic stay; it may toll Board deadlines, but if no Board filing? Need maybe explain: The only reliable way to preserve the automatic stay is Board receipt by Sept 11. An agency protest on Sept 10 can be a supplement, but not substitute. If the agency issues a written suspension before Sept 11, it may toll Board deadlines (per rule 6) but it is still not an automatic Board stay and depends on agency action. Because no written commitment, do not build plan on it. If a written suspension is obtained before Sept 11, file Board immediately and state suspension; but still file Board. If not, file Board by Sept 11.

Need maybe mention if agency protest filed after Board? It might be duplicative; can include to preserve agency-level objections or facilitate debriefing? But not needed. Exact sequence: Board first. If management insists on agency protest, file it concurrently with Board or after Board, not before. But if filing agency on Sept 10 and Board on Sept 11, okay. But if waiting for agency answer before Board, bad.

Need maybe mention "request protected access" in initial Board protest; if agency protest also, request records? But Board is the forum.

Need maybe discuss "supporting facts then known". At filing today Sept 7, Silverline knows debriefing slides. Should attach them. Should state that the model is not identified in Atlas proposal as represented in debriefing; request records to confirm and to review scoring. Should state the subcontractor clause and zero score. Should state evaluated price difference. Need not know exact scores? It knows from slides. If slides are summary, still facts then known. Include "to the extent shown by debriefing materials".

Need maybe discuss "requested relief": 
- Set aside award to Atlas.
- Direct the Authority to reevaluate proposals (or resolicit) consistent with solicitation.
- Grant/stay performance pending protest (automatic if timely; also request discretionary stay if automatic not applicable).
- Grant protected access to procurement records.
- Award costs? Maybe not required, but can request reasonable protest costs if rules allow? Not in given law. Could include but not necessary. We can say request any available relief including costs.

Need maybe discuss "public interest" in court: fairness, public funds, competition. Need mention "likely success" based on clear scoring errors and clause violation. "Irreparable harm" need support; proposal costs alone insufficient. Need maybe mention "if transition begins before ruling, court can order vacatur/ stay of transition; but need evidence of hard to undo."

Need maybe produce a final ordered plan with steps and deadlines. Could include a "do not do" list.

Let's draft final answer.

Potential structure:

**Short answer / recommended sequence:**
1. File Board protest today (Tue Sept 7) and no later than Sat Sept 11. Include three post-award grounds, omit waived polar-experience ground. Request automatic stay, protected records, set-aside.
2. Do not wait for agency protest. If agency protest is desired, file it concurrently or after Board, and only seek written suspension; it is not a stay.
3. After receiving records, supplement promptly.
4. If no automatic stay is in place (missed or denied), before transition begins on Mon Sept 13, seek Board discretionary stay and file court TRO/PI.

Then detailed sections:

**1. Waived solicitation ground**:
- The 5-year polar-region experience was apparent; must protest before bid deadline; Silverline submitted without protest; waived; debriefing does not revive; omit from Board protest.

**2. Knowledge of post-award grounds and merits deadline**:
- First disclosed at required debriefing Sat Sept 4; written slides same day; knowledge date Sept 4. Exclude Sept 4; count 10 calendar days: Sept 5-14. Deadline Tue Sept 14. All three grounds known then; include now.

**3. Automatic stay calculations**:
- Award notice: Wed Sept 1, exclude; 10 days = Sat Sept 11.
- Debriefing: Sat Sept 4, exclude; 5 days = Thu Sept 9.
- Later controls: Sat Sept 11. Board open; last filing date to preserve automatic stay = receipt by Sat Sept 11, 2027. If received Sept 12, no automatic stay.

Could include table:
Event, trigger, count, deadline.

**4. Agency-first plan**:
- Filing agency protest on Sept 10 and waiting does not preserve automatic stay. Rule 6: agency protest doesn't trigger Board stay, no tolling absent written suspension before Board deadline. No written commitment. Even if agency suspends before Sept 11, it is not automatic and uncertain; Board filing by Sept 11 is required. Waiting risks losing auto stay and possibly merits if after Sept 14. If agency protest is filed, do so concurrently and do not condition Board filing on agency response.

**5. Grounds in initial Board protest**:
- (a) Unsupported/erroneous technical score for sensor resolution: credited based on model not identified in proposal. Facts: debriefing slides; proposal did not identify model; evaluation not supported.
- (b) Improper zero credit for subcontractor experience: solicitation clause "will be considered"; Silverline had relevant subcontractor experience; zero credit contrary.
- (c) Selection not best value/unsupported due to disputed technical scoring: Atlas evaluated price $1.8M higher; selected based on disputed scores; if corrected, award to Atlas lacks support. Request reevaluation/set aside.
- Omit polar-region experience ground.
- Include facts then known, documents, relief.

Need maybe be careful: "Atlas's evaluated price was $1.8 million higher, but the Authority selected it based on the disputed technical scoring." If we include as ground, should phrase "the award is not a best-value selection because the technical score differential was based on improper evaluations; the price evaluation shows Silverline was $1.8M lower." Good.

**6. Protected records and supplementation**:
- Request in initial protest access to evaluation report, score sheets, rater notes, Atlas proposal (including sensor model if any), Silverline evaluation, price evaluation, debriefing materials, related correspondence. Seek confidential treatment.
- Initial protest must state known facts; don't wait. After receiving agency report/records, file supplement with new facts first learned; identify source/date; supplement existing grounds or support. This preserves ability to develop case without forfeiting initial timeliness.

**7. Court relief if automatic stay lost**:
- If Board protest not received by Sept 11, no automatic stay. If merits timely (by Sept 14) performance continues unless Board/court discretionary stay.
- Seek Board discretionary stay and, before Mon Sept 13, file court TRO/PI.
- Court standard: likely success, irreparable harm, balance of harms, public interest; no automatic.
- Proposal costs $620k alone not enough; must show noncompensable harm: transition beginning Sept 13 would entrench Atlas, make corrective competition harder, waste public funds, undermine procurement integrity; affidavits/evidence. If court finds only monetary loss, may deny. Public interest in fair competition and proper use of funds. Need file expedited.

**8. Exact filing sequence**:
- Today Tue Sept 7: prepare and submit Board protest with receipt confirmation. Include all grounds, facts, relief, records request, automatic stay request. Attach award notice, debriefing slides, solicitation clause, proposal excerpts.
- Do not file agency protest as a delaying step. If desired, on Sept 10 (or concurrently) file agency protest, but only after Board protest is filed; request written suspension before Sept 11; do not wait for answer.
- By Sat Sept 11: ensure Board receipt; if not already, file last day.
- Between Sept 7 and Board decision: monitor; if agency issues written suspension, notify Board; continue.
- After records: promptly supplement.
- If no stay or if Board delays and performance begins: before/at Sept 13, file court emergency injunction and Board motion for stay.
- If somehow Board protest not filed by Sept 11, file by Sept 14 if possible to preserve merits and seek discretionary relief/court; but this is inferior.
- If after Sept 14: likely time-barred; only extraordinary relief.

Need maybe mention "strongest procedural position" includes preserving automatic stay and merits, and creating record for judicial review. Early filing by Sept 7 gives time for Board to rule before transition Sept 13. If filed Sept 11, Board may not rule before Sept 13; but automatic stay keeps performance from starting. Good point: filing early maximizes chance of Board ruling before transition. We can say file immediately, not last minute, because transition starts Sept 13 and Board may need time.

Need maybe include exact date "September 11, 2027" as last filing date. Need maybe include "by" and "received".

Potential question: "The date Silverline knew the post-award grounds." Could there be a distinction between "actual knowledge" and "should have known"? For first-time disclosure, actual knowledge Sept 4. For the price difference, if Atlas's evaluated price was $1.8M higher, maybe Silverline should have known from its own price? No, evaluated price of Atlas not known. We'll state Sept 4.

Potential nuance: "A required debriefing delays knowledge of matters first disclosed there." Does that mean knowledge date is the date of debriefing, or the date the written debriefing was received? It says held Saturday, written slides same day. Use Sept 4. If written later, maybe date of written? Not here.

Potential nuance: "If a deadline falls on a day the Board is closed, filing is due the next open day. The Board is open on every date relevant here." So no extension for Sat Sept 11. We can explicitly say even though Sept 11 is Saturday, Board is open, so no shift to Monday Sept 13. This is important. If Board were closed, next open day might be Monday Sept 13, but it is open, so deadline remains Sat Sept 11. Good.

Potential nuance: "Today is Tuesday, September 7." If file today, it's within both deadlines. If management proposes agency protest on Sept 10, maybe Board by Sept 11. But strongest is today. Need maybe state "If filing today is not possible, file by end of day Sept 11; but do not wait for agency." Good.

Potential nuance: "The protest must state each ground, the supporting facts then known, requested relief, and any request for protected access to procurement records." We should maybe provide a checklist for initial protest.

Need maybe include "waived solicitation ground" maybe if it's included as a ground, it is waived; but if the debriefing first disclosed how it was applied? It didn't. It was apparent. So no.

Need maybe mention "subcontractor experience ground" is not an apparent solicitation defect? The clause was known but the way it was applied (zero) was first disclosed. So post-award ground. Good.

Need maybe mention "sensor-resolution score ground" first disclosed. Good.

Need maybe mention "price/selection ground" first disclosed. Good.

Could there be a "protest based on apparent solicitation defect" for the five-year requirement: if Silverline submitted without protest, waived. But could it argue the requirement was unnecessary restrictive only now? No.

Need maybe mention "automatic stay of performance" not "stay of award"? Performance automatically stayed if Board receives protest by deadline. It likely stays performance of contract, not necessarily other steps. Need use performance.

Need maybe mention "if Board receives protest by later of dates" - if received on Sept 11, automatic stay. If filed electronically and Board acknowledges later? Need ensure receipt. We can say use Board's designated electronic filing and obtain time-stamped receipt; if paper, use trackable delivery that will arrive by deadline.

Need maybe mention "court jurisdiction" not specified. We can say in the appropriate court with jurisdiction over procurement disputes. Not necessary.

Need maybe include "No automatic stay in court" so if no Board stay, performance can continue while court motion pending unless injunction issued. Need emphasize.

Potential final answer style: Use headings and bullet points. Could include a date table.

Let's draft final with enough detail.

Need ensure no contradictions: In exact sequence, I might say file Board protest today; if agency protest on Sept 10, file concurrently. But if Board protest filed today, why file agency? Management wants; optional. We can say if management wants agency-level protest, file it after or with Board, not instead. It may be useful to preserve agency record but not needed. It does not toll unless written suspension. We can say do not allow agency filing to delay Board filing.

Need maybe mention "If the agency issues a written suspension before September 11, preserve it in the Board filing and request the Board to continue the stay and toll deadlines as required; but still file the Board protest by September 11." Good.

Need maybe include "What if Board protest is received September 12?" It is timely merits if by Sept 14 but no automatic stay; performance continues. Since transition Sept 13, if filed Sept 12, need immediate court/Board stay. If filed Sept 13, still timely merits? Yes by Sept 14, but transition starts same day; need court. If filed Sept 14, last merits; transition has begun; court. If after Sept 14, untimely merits.

Need maybe mention "the last filing date that preserves automatic stay" is not the merits deadline. Some might think Sept 14; but auto stay is Sept 11. Good.

Let's ensure date count again:
Award notice Wednesday Sept 1. Day excluded. Day 1 Thursday Sept 2, 2 Friday 3, 3 Saturday 4, 4 Sunday 5, 5 Monday 6, 6 Tuesday 7, 7 Wednesday 8, 8 Thursday 9, 9 Friday 10, 10 Saturday 11. Yes.
Debriefing Saturday Sept 4. Day excluded. Day 1 Sunday 5, 2 Monday 6, 3 Tuesday 7, 4 Wednesday 8, 5 Thursday 9. Yes.
Knowledge Sept 4. Day excluded. Day 1 Sunday 5, 2 Monday 6, 3 Tuesday 7, 4 Wednesday 8, 5 Thursday 9, 6 Friday 10, 7 Saturday 11, 8 Sunday 12, 9 Monday 13, 10 Tuesday 14. Yes.

Need maybe mention "calendar days include weekends". Good.

Potential issue: "A post-award protest to the Procurement Review Board must be filed within ten calendar days after the protester knew or should have known the basis." If knowledge date is Sept 4, and the day of knowledge excluded, is the 10th day Sept 14? Yes. Some might count Sept 4 as day 0; 10 days later is Sept 14. Good.

Potential issue: "Award performance is automatically stayed only if the Board receives the protest by the later of: (a) ten calendar days after award notice; or (b) five calendar days after required debriefing. The triggering day is excluded." If the protest is based on grounds known after debriefing, does the automatic stay period still use award notice/debriefing dates? Yes. So even if knowledge Sept 4, auto stay deadline is Sept 11 (10 days after award). Good.

Potential issue: "A timely merits protest filed after the automatic-stay deadline may proceed". If protest is filed by Sept 11, it's both timely and auto stay. If filed Sept 12-14, timely merits but no auto stay. If filed after Sept 14, not timely merits. Good.

Need maybe include "protected record access" could be necessary to prove sensor model not identified. If initial protest states "based on a model Atlas did not identify" from debriefing, that is enough. But records will confirm. Need maybe mention if the debriefing slides are written and received same day, they are in possession. Attach.

Need maybe discuss "court relief if automatic stay lost" with sequence: If no automatic stay but Board protest timely, first file a motion with Board for stay (because Board may grant discretionary) and simultaneously file court TRO/PI. Which first? If transition imminent, court may be needed. But Board motion is less burdensome. Since no automatic, Board has discretion; but court can act quickly. We can say file both simultaneously or court first if performance is about to begin. The question asks "Court relief if automatic stay is lost." So describe. Exact sequence: If automatic stay lost, file Board protest (if not already) by Sept 14, immediately request Board stay, and before Sept 13 file court TRO/PI. If Board protest already filed late, then court. Need maybe state court filing does not create automatic stay; if no injunction, transition can proceed.

Need maybe mention "irreparable harm" could be "the government's payment of $1.8M excess price if award stands" but that's monetary, compensable? Public funds might be irreparable? Courts sometimes find waste of public funds irreparable. But we should be cautious. We can say argue it, but proposal costs alone not enough. Need maybe say "the best showing is that performance/transition of an award resting on unsupported scoring will cause noncompensable procurement injury and entrench a noncompliant awardee; support with evidence of transition steps that cannot be undone." Good.

Need maybe mention "balance of harms": If stay, Atlas loses opportunity and maybe incurs costs; but those are compensable; if no stay, Silverline and public suffer harm. Good.

Need maybe mention "public interest": fair and full competition, proper use of public funds, integrity of procurement. Good.

Need maybe include "The strongest procedural position" includes: (1) Board protest before auto-stay deadline; (2) all known grounds asserted; (3) records requested; (4) no waiver by agency-first delay; (5) supplementation preserved; (6) court option if stay lost. Good.

Let's think if there are any traps:
- The solicitation defect is waived, but could it be used to argue the entire protest is frivolous? No.
- The debriefing on Saturday may delay knowledge, but the 5-day auto-stay calculation from debriefing is earlier than 10 days from award. The later is award date. Some may mistakenly use Sept 9. Need emphasize controls.
- Management's agency protest on Sept 10: If filed one day before auto-stay deadline, but no Board filing, could it toll? Rule 6 says no unless written suspension before Board deadline expires. If agency issues written suspension on Sept 10, maybe tolls. But no written commitment. Even if written suspension, it does not trigger Board auto stay; maybe tolls Board deadlines. But the question asks "why the proposed agency-first sequence does or does not protect the stay." We should say it does not, except in the narrow case of agency written suspension before Sept 11, which is not present and not reliable. It does not preserve the automatic stay; only Board receipt by Sept 11 does. If the agency issues written suspension before Sept 11, it may toll Board deadlines, but Silverline still should file with Board. If no Board filing, performance might be suspended by agency, but not "automatic stay" under rule 4? The question specifically preserves automatic stay. So no.
- "does or does not toll either Board deadline unless the agency issues a written suspension before the Board deadline expires." If agency protest filed Sept 10 and agency issues written suspension on Sept 10, does that toll the Board auto-stay deadline? It says either Board deadline. The "Board deadline" could mean the Board merits deadline and automatic stay deadline. If written suspension before Sept 11, yes toll. But automatic stay is still only if Board receives protest by later of dates? If tolled, maybe extended. But not automatic. We can state: The agency-first plan could only affect deadlines if the agency actually issues a written suspension before Sept 11; that would not be an automatic Board stay and is speculative. The automatic-stay protection is lost unless a Board protest is received by Sept 11 (or possibly if tolled by written suspension, but still need Board filing). Because no written commitment, do not rely.
- "The Board is open on every date relevant here." If deadline Saturday Sept 11, open. If we file today, no issue.
- "Today is Tuesday Sept 7" management proposes agency protest Sept 10. We should say do not wait until Sept 10; file Board now. Even if file Board Sept 11, auto stay, but early is stronger because transition Sept 13 and Board may need time.
- "Silverline spent $620,000 preparing its proposal and estimates that transition will make meaningful corrective competition harder, but proposal costs alone do not establish irreparable harm." Need maybe not propose using $620k as irreparable. Use only as background/damages. Need maybe say in court complaint, do not rest irreparable harm on proposal costs; include additional evidence. Good.

Need maybe include "protected access to procurement records" in initial protest: If Silverline does not request, may waive? Rule says must request any request. So include.

Need maybe include "later supplementation permitted for facts first learned from the agency report." The phrase "agency report" maybe refers to the agency's protest decision/report. If Silverline requests protected access, the agency report may include new facts. Supplement after receiving. Need maybe say if facts are first learned from the agency report, supplement; do not use it to add a ground that was actually known earlier. Good.

Potential final answer should be self-contained. Let's formulate.

Maybe begin:

**Recommended bottom line:** File the Procurement Review Board protest immediately—today, September 7, 2027, and no later than Saturday, September 11, 2027. Do not file an agency protest first and wait. The last date to preserve the automatic stay is September 11. The merits deadline is September 14. The polar-region experience ground is waived.

Then sections.

Need maybe include exact "ordered protest plan" as requested. We can label:

1. Threshold: abandon/waive solicitation ground.
2. Determine knowledge and deadlines.
3. File Board protest immediately.
4. Handle agency protest.
5. Records/supplementation.
6. Contingent court relief.
7. Final sequence.

Let's produce with tables.

Need ensure legal advice style but fictional. Use "should". Good.

Let's draft in final.

Double-check if there is any need to mention "protest based on apparent solicitation defect must be filed before bid deadline". The bid deadline date not given. But Silverline submitted without protest. So waived. Good.

Could include "If the five-year requirement was not actually apparent?" Facts say openly required; apparent. Good.

Could include "The subcontractor clause 'will be considered' might be ambiguous; but protest ground is evaluation treated as zero, contrary to clause." Good.

Could include "The sensor model not identified in proposal: if the debriefing said a model not identified, but maybe the model was in proposal? Silverline's fact is that it did not identify. We can state as asserted and verify through records." Good.

Could include "The $1.8M price difference: If technical scores are corrected, Atlas's higher price means Silverline should have been selected or at least award is not best value." Good.

Need maybe mention "requested relief" in Board protest: "set aside the award; direct the Authority to correct the evaluation and re-evaluate or resolicit; grant a stay; provide protected access; award costs." Good.

Need maybe mention "If the Board protest is filed on September 11, automatic stay is preserved even though the debriefing five-day date was September 9, because the later date controls." Good.

Need maybe mention "If filed September 12, the automatic stay is lost even if merits timely, because the later of the two automatic-stay dates is September 11." Good.

Need maybe mention "Board open on weekends; no extension to Monday Sept 13 for Saturday deadline." Good.

Need maybe mention "If filing on September 11, ensure 'receipt' not just 'submission' if paper. Electronic timestamp." Good.

Need maybe mention "If management wants to preserve agency-level protest, file it as a parallel letter after Board filing, with a statement that it does not delay or waive Board protest." Good.

Need maybe mention "If agency issues written suspension before Sept 11, attach it and ask Board to treat deadlines as tolled; but still file Board by Sept 11 to preserve automatic stay under rule 4? If tolled, maybe not necessary? But safe." Good.

Need maybe mention "Court relief: If no stay, file before September 13; if transition has begun, seek expedited TRO; court may still enjoin ongoing transition if irreparable." Good.

Let's write final answer with high detail but organized.

Potential final:

```
Bottom line: File Board protest now (Sept 7) and ensure receipt by Sept 11. The agency-first plan is a trap.
```

Then date table:

| Deadline | Trigger | Excluded trigger day | Counting | Deadline |
... etc.

Need be careful: For auto-stay award-notice calculation, "ten calendar days after award notice" could be interpreted as Sept 11. For debriefing, "five calendar days after required debriefing" Sept 9. Later is Sept 11. For merits, "ten calendar days after knowledge" Sept 14. Good.

Let's include a "do not" bullet: Do not include polar-region ground; do not wait for agency; do not rely on $620k as irreparable harm.

Need maybe mention "The initial Board protest should be complete as to known facts; supplementation only for facts first learned from agency report." Good.

Let's consider if there is any need to discuss "protected records" before court? If automatic stay lost, court may also require discovery? Not necessary. But can mention court may need declarations based on records; if no access, seek expedited discovery? Maybe too much. But can say request Board records before court to support injunction; if court relief needed, use available records and request expedited discovery if necessary.

Potential nuance: "The protest must state each ground, the supporting facts then known, requested relief, and any request for protected access to procurement records." If we omit the waived ground, is that okay? Yes. It must state each ground being asserted. We can note the waived ground is not a ground. Good.

Potential nuance: "Later supplementation is permitted for facts first learned from the agency report." If the agency report reveals the sensor model was actually in proposal, that undermines ground. But supplementation allows adding facts. Need maybe mention if new facts are adverse, still must disclose? Not in rules. But ethical? Not necessary. Could say supplementation is for facts first learned; include all material facts then known. Good.

Need maybe include "The date Silverline knew the post-award grounds" could be "September 4, 2027, the day of the required debriefing and receipt of written slides." Good.

Need maybe include "The Board merits deadline is Tuesday, September 14, 2027." Good.

Let's ensure final doesn't accidentally say Sept 9 is last filing date. It is one of calculations, but later controls. Good.

Need maybe include "If the Board protest is filed on September 11 (Saturday), the automatic stay is preserved because Board is open. If the Board were closed, next open day, but it is not." Good.

Need maybe include "If filing on September 11 is not possible, filing September 12-14 preserves merits but not automatic stay; then court/Board discretionary." Good.

Need maybe include "If filing after September 14, the Board protest is untimely on the merits; only discretionary/extraordinary relief." Good.

Let's think if there is any alternative interpretation: Could the 10-calendar-day Board merits deadline run from the later of knowledge or debriefing? It runs from knowledge. Knowledge delayed to Sept 4. So Sept 14. Could there be a shorter "automatic stay" deadline of 5 days after debriefing (Sept 9) that controls if protest based on debriefing grounds? Rule says later of award 10 or debriefing 5. Since 10 after award is later, Sept 11. Good.

Could the "required debriefing" date for auto stay be the date of the written debriefing slides? Same day. Good.

Could the "day of knowledge is excluded" for merits mean if knowledge Sept 4, the first full day is Sept 5; yes. Good.

Potential issue: If award notice was Sept 1, 10 days after is Sept 11. But if the protest is based on grounds first known Sept 4, does the auto-stay period maybe start from knowledge? Rule 4 does not say; it says award notice or debriefing. So no.

Potential issue: "A required debriefing delays knowledge of matters first disclosed there. It does not revive an apparent solicitation defect." This might also affect the 10-day merits deadline for the subcontractor zero score? The solicitation clause was apparent, but the fact that it was treated as zero was first disclosed. That's a post-award evaluation ground, not apparent solicitation defect. So not waived. Good.

Potential issue: "The solicitation openly required five years of polar-region experience. Silverline had only three years but submitted without protest. It now argues that the requirement was unnecessarily restrictive." This is a solicitation defect. If Silverline submitted, it may be considered to have waived. Yes.

Potential issue: "It now argues that the requirement was unnecessarily restrictive." Could be a ground that the requirement was not reasonably necessary, but apparent and not protested before bid. Waived. Good.

Need maybe mention "do not use the waived ground to reset knowledge or extend deadlines." Good.

Potential final answer:

```
### 1. Waived ground
...
### 2. Knowledge and deadlines
Table...
### 3. Automatic stay
...
### 4. Agency protest
...
### 5. Initial Board protest contents
...
### 6. Records and supplementation
...
### 7. Court relief
...
### 8. Exact sequence
1. Today Sept 7: File Board protest ...
2. Do not wait ...
...
```

Need maybe make "ordered protest plan" explicitly ordered. We can number steps.

Let's write final with precise language.

Need maybe include "Management proposes first filing an agency protest on September 10 and waiting for the agency's answer before going to the Board." We should directly say: That sequence would lose the automatic stay unless a Board protest is received by Sept 11. If the agency answer comes after Sept 11, automatic stay gone. If after Sept 14, merits gone. Even if agency protest is filed Sept 10, it does not toll absent written suspension. Since no written commitment, it is not protective. If a written suspension were obtained before Sept 11, it might toll Board deadlines, but it would not itself create the Board automatic stay; still file Board. Good.

Need maybe include "The agency protest can be filed on Sept 10 if management wants, but only after Board protest has been filed and receipt confirmed." Good.

Need maybe include "If the agency protest is filed before the Board protest, ensure the Board protest still says it is timely and not delayed." Not necessary.

Need maybe include "The strongest procedural position is to make the Board protest the controlling filing, not the agency protest." Good.

Potential final nuance: "Court relief if automatic stay is lost" - if the Board protest is timely but no automatic stay, the protest may proceed. But if transition starts Sept 13, and court injunction filed Sept 12, court can issue TRO before transition. Need mention "ex parte" maybe? Court may consider ex parte TRO if urgent. But not necessary.

Need maybe include "The $620,000 proposal cost can be pled as damages or to show injury, but not as irreparable harm." Good.

Need maybe include "If the court denies, performance may proceed; Board merits decision may still require set-aside, but transition may already have occurred." Good.

Let's produce final now. Ensure no analysis in final. Use clear date labels.

One more check: 2027 September calendar: Is Sept 1 actually Wednesday? The prompt says Wednesday, Sept 1, 2027. We use that. Good.

Need maybe include "September 11, 2027 is a Saturday". Yes.

Need maybe include "September 14, 2027 is a Tuesday". Yes.

Need maybe include "September 13, 2027 is a Monday" transition. Yes.

Need maybe include "September 10, 2027 is Friday". Yes.

Let's final.
